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GS-STP(1)			     2001			     GS-STP(1)

NAME
       stp - Ghostscript device driver for ESC/P, ESC/P2, RTL/PCL

OPTIONS
       Options	for the stp driver are given in normal Ghostscript manner. The
       resolution of the image calculated by Ghostscript is not bound  to  the
       resolution of the printer output. It is for example possible to specify
       -r360 to gs and print the output in 1440x720 dpi (see below for	driver
       parameter). The result is a somewhat faster operation of the driver.

       The device name is "stp" (-sDEVICE=stp)

       The driver will not permit use of invalid settings.

       The  options  for  this driver are very complex.	 We strongly recommend
       use of a printer management system such as Foomatic rather than config‐
       uring  a	 spooler  manually  with  this driver. The driver name used by
       Foomatic is "gimp-print".

   Overview for the IJS Driver:
       Most options for the ijsgimpprint driver are similar to those  for  the
       stp  driver.   The major difference is that most of the Gimp-Print spe‐
       cific options are bundled together into a single option that is	passed
       in  as  a  special -sIjsParams parameter, and the normal Ghostscript -s
       and -d flags, indicating whether an option is a string or a number, are
       not used in this special parameter.

       The  device name is "ijs" (-sDEVICE=ijs).  In addition, the location of
       the  driver  program  must  be  specified.   This  will	typically   be
       /usr/bin/ijsgimpprint;	  the	 parameter    in    this    case    is
       -sIjsServer=/usr/bin/ijsgimpprint .

       Also, -dIjsUseOutputFD should be specified whenever output from	Ghost‐
       script  will  go	 to stdout or into a pipe.  It may be specified in all
       other cases, with only a slight performance degradation.

       The  -sIjsParams	 parameter  contains  a	 single	 string	 containing  a
       comma-separated list of sub-options:

       -sIjsParams=Option1=Value1,Option2=Value2

       and so forth.

       The options for this driver are very complex. We strongly recommend use
       of a printer management system such as Foomatic rather than configuring
       a  spooler  manually with this driver. The driver name used by Foomatic
       is "gimp-print-ijs".

   Printer Model Selection (Option STP: -sModel=name ,	IJS:  -sDeviceManufac‐
       turer=vendor -sDeviceModel=name):
       This  option  must  be supplied.	 There is no default.	The IJS driver
       requires the vendor (it's part of the protocol), but  the  ijsgimpprint
       driver	ignores	  it.	 It   should  be  CANON,  EPSON,  LEXMARK,  or
       HEWLETT-PACKARD.	 The value of the -sDeviceModel parameter is the  same
       as the value of the -sModel parameter in the stp driver.

       model name	printer
       ───────────────────────────────────────────────────────────
       bjc-30		CANON BJC 30
       bjc-50		CANON BJC 50
       bjc-55		CANON BJC 55

       bjc-80		CANON BJC 80
       bjc-85		CANON BJC 85
       bjc-210		CANON BJC 210
       bjc-240		CANON BJC 240
       bjc-250		CANON BJC 250
       bjc-1000		CANON BJC 1000
       bjc-2000		CANON BJC 2000
       bjc-3000		CANON BJC 3000
       bjc-4300		CANON BJC 4300
       bjc-4400		CANON BJC 4400 photo
       bjc-6000		CANON BJC 6000
       bjc-6100		CANON BJC 6100
       bjc-6200		CANON BJC 6200
       bjc-6500		CANON BJC 6500
       bjc-7000		CANON BJC 7000
       bjc-7100		CANON BJC 7100
       bjc-8200		CANON BJC 8200
       bjc-s200		CANON S200
       bjc-s400		CANON S400
       bjc-s450		CANON S450
       bjc-s800		CANON S800
       bjc-s4500	CANON S4500
       escp2-c20sx	EPSON Stylus C20SX
       escp2-c20ux	EPSON Stylus C20UX
       escp2-c40sx	EPSON Stylus C40SX
       escp2-c40ux	EPSON Stylus C40UX
       escp2-c41sx	EPSON Stylus C41SX
       escp2-c41ux	EPSON Stylus C41UX
       escp2-c42sx	EPSON Stylus C42SX
       escp2-c42ux	EPSON Stylus C42UX
       escp2-c43sx	EPSON Stylus C43SX
       escp2-c43ux	EPSON Stylus C43UX
       escp2-c44sx	EPSON Stylus C44SX
       escp2-c44ux	EPSON Stylus C44UX
       escp2-c50	EPSON Stylus C50
       escp2-c60	EPSON Stylus C60
       escp2-c61	EPSON Stylus C61
       escp2-c62	EPSON Stylus C62
       escp2-c70	EPSON Stylus C70
       escp2-c80	EPSON Stylus C80
       escp2-c82	EPSON Stylus C82
       escp2-c83	EPSON Stylus C83
       escp2-c84	EPSON Stylus C84
       escp2		EPSON Stylus Color
       escp2-pro	EPSON Stylus Color Pro
       escp2-pro-xl	EPSON Stylus Color Pro XL
       escp2-400	EPSON Stylus Color 400
       escp2-440	EPSON Stylus Color 440
       escp2-460	EPSON Stylus Color 460
       escp2-480	EPSON Stylus Color 480
       escp2-500	EPSON Stylus Color 500
       escp2-580	EPSON Stylus Color 580
       escp2-600	EPSON Stylus Color 600
       escp2-640	EPSON Stylus Color 640
       escp2-660	EPSON Stylus Color 660
       escp2-670	EPSON Stylus Color 670
       escp2-680	EPSON Stylus Color 680
       escp2-740	EPSON Stylus Color 740
       escp2-760	EPSON Stylus Color 760
       escp2-777	EPSON Stylus Color 777
       escp2-800	EPSON Stylus Color 800
       escp2-850	EPSON Stylus Color 850
       escp2-860	EPSON Stylus Color 860
       escp2-880	EPSON Stylus Color 880
       escp2-83		EPSON Stylus Color 83

       escp2-900	EPSON Stylus Color 900
       escp2-980	EPSON Stylus Color 980
       escp2-1160	EPSON Stylus Color 1160
       escp2-1500	EPSON Stylus Color 1500
       escp2-1520	EPSON Stylus Color 1520
       escp2-3000	EPSON Stylus Color 3000
       escp2-photo	EPSON Stylus Photo
       escp2-700	EPSON Stylus Photo 700
       escp2-ex		EPSON Stylus Photo EX
       escp2-ex3	EPSON Stylus Photo EX3
       escp2-720	EPSON Stylus Photo 720
       escp2-750	EPSON Stylus Photo 750
       escp2-780	EPSON Stylus Photo 780
       escp2-785	EPSON Stylus Photo 785EPX
       escp2-790	EPSON Stylus Photo 790
       escp2-810	EPSON Stylus Photo 810
       escp2-820	EPSON Stylus Photo 820
       escp2-825	EPSON Stylus Photo 825
       escp2-830	EPSON Stylus Photo 830
       escp2-870	EPSON Stylus Photo 870
       escp2-875	EPSON Stylus Photo 875
       escp2-890	EPSON Stylus Photo 890
       escp2-895	EPSON Stylus Photo 895
       escp2-ph900	EPSON Stylus Photo 900
       escp2-915	EPSON Stylus Photo 915
       escp2-925	EPSON Stylus Photo 925
       escp2-950	EPSON Stylus Photo 950
       escp2-960	EPSON Stylus Photo 960
       escp2-1200	EPSON Stylus Photo 1200
       escp2-1270	EPSON Stylus Photo 1270
       escp2-1280	EPSON Stylus Photo 1280
       escp2-1290	EPSON Stylus Photo 1290
       escp2-2000	EPSON Stylus Photo 2000P
       escp2-2100	EPSON Stylus Photo 2100
       escp2-2200	EPSON Stylus Photo 2200
       escp2-5000	EPSON Stylus Pro 5000
       escp2-5500	EPSON Stylus Pro 5500
       escp2-7000	EPSON Stylus Pro 7000
       escp2-7500	EPSON Stylus Pro 7500
       escp2-7600	EPSON Stylus Pro 7600
       escp2-9000	EPSON Stylus Pro 9000
       escp2-9500	EPSON Stylus Pro 9500
       escp2-9600	EPSON Stylus Pro 9600
       escp2-10000	EPSON Stylus Pro 10000
       escp2-scan2000	EPSON Stylus Scan 2000
       escp2-scan2500	EPSON Stylus Scan 2500
       escp2-cx3200	EPSON Stylus CX-3200
       escp2-cx5200	EPSON Stylus CX-5200
       escp2-cl700	EPSON CL-700
       escp2-cl750	EPSON CL-750
       escp2-em900c	EPSON EM-900C
       escp2-em930c	EPSON EM-930C
       escp2-mc10000	EPSON MC-10000
       escp2-mc2000	EPSON MC-2000
       escp2-mc5000	EPSON MC-5000
       escp2-mc7000	EPSON MC-7000
       escp2-mc9000	EPSON MC-9000
       escp2-mj930c	EPSON MJ-930C
       escp2-mj5100c	EPSON MJ-5100C
       escp2-mj6000c	EPSON MJ-6000C
       escp2-mj8000c	EPSON MJ-8000C
       escp2-pm10000	EPSON PM-10000
       escp2-pm2000c	EPSON PM-2000C
       escp2-pm2200c	EPSON PM-2200C
       escp2-pm3000c	EPSON PM-3000C

       escp2-pm3300c	EPSON PM-3300C
       escp2-pm3500c	EPSON PM-3500C
       escp2-pm4000px	EPSON PM-4000PX
       escp2-pm5000c	EPSON PM-5000C
       escp2-pm7000c	EPSON PM-7000C
       escp2-pm700c	EPSON PM-700C
       escp2-pm730c	EPSON PM-730C
       escp2-pm750c	EPSON PM-750C
       escp2-pm760c	EPSON PM-760C
       escp2-pm770c	EPSON PM-770C
       escp2-pm780c	EPSON PM-780C
       escp2-pm790pt	EPSON PM-790PT
       escp2-pm800c	EPSON PM-800C
       escp2-pm850pt	EPSON PM-850PT
       escp2-pm880c	EPSON PM-880C
       escp2-pm9000c	EPSON PM-9000C
       escp2-pm950c	EPSON PM-950C
       escp2-pm970c	EPSON PM-970C
       escp2-px7000	EPSON PX-7000
       escp2-px9000	EPSON PX-9000
       pcl-desnj-230	HP DesignJet 230
       pcl-desnj-250	HP DesignJet 250
       pcl-desnj-430	HP DesignJet 430
       pcl-desnj-450	HP DesignJet 450
       pcl-desnj-455	HP DesignJet 455
       pcl-desnj-488	HP DesignJet 488
       pcl-desnj-700	HP DesignJet 700
       pcl-750		HP DesignJet 750C
       pcl-desnj-2500	HP DesignJet 2500
       pcl-desnj-3500	HP DesignJet 3500
       pcl-340		HP DeskJet 340
       pcl-400		HP DeskJet 400
       pcl-500		HP DeskJet 500
       pcl-501		HP DeskJet 500C
       pcl-520		HP DeskJet 520
       pcl-540		HP DeskJet 540C
       pcl-550		HP DeskJet 550C
       pcl-560		HP DeskJet 560C
       pcl-600		HP DeskJet 600/600C (Single Cartridge)
       pcl-601		HP DeskJet 600 series (2 Cartridge)
       pcl-690		HP DeskJet 690 series (Photo-Ink capable)
       pcl-810		HP DeskJet 810C
       pcl-812		HP DeskJet 812C
       pcl-840		HP DeskJet 840C
       pcl-842		HP DeskJet 842C
       pcl-845		HP DeskJet 845C
       pcl-850		HP DeskJet 850C
       pcl-855		HP DeskJet 855C
       pcl-870		HP DeskJet 870C
       pcl-890		HP DeskJet 890C
       pcl-895		HP DeskJet 895C
       pcl-900		HP DeskJet 900 series
       pcl-P1000	HP PhotoSmart P1000
       pcl-1100		HP DeskJet 1100C
       pcl-P1100	HP PhotoSmart P1100
       pcl-1120		HP DeskJet 1120C
       pcl-1200		HP DeskJet 1200C
       pcl-1220		HP DeskJet 1220C
       pcl-1600		HP DeskJet 1600C
       pcl-2000		HP DeskJet 2000 series
       pcl-2500		HP DeskJet 2500 series
       pcl-2		HP LaserJet II series
       pcl-3		HP LaserJet III series
       pcl-4		HP LaserJet 4 series
       pcl-4l		HP LaserJet 4L

       pcl-4v		HP LaserJet 4V, 4Si
       pcl-5		HP LaserJet 5 series
       pcl-5si		HP LaserJet 5Si
       pcl-6		HP LaserJet 6 series
       lexmark-4076	Lexmark 4076 (PCL printer)
       lexmark-z42	Lexmark Z42
       lexmark-z43	Lexmark Z43
       lexmark-z52	Lexmark Z52
       lexmark-z53	Lexmark Z53
       ───────────────────────────────────────────────────────────

       Most  or	 all  of  the Epson Stylus printers are fully functional.  The
       others vary.  In particular, all	 of  the  listed  Epson	 Stylus	 Photo
       printers	 print	in full 6-color photo mode; most of the others do not.
       The color output has also been better tuned for Epson  Stylus  printers
       than for others.

   Print Resolution Selection (Option STP: -sQuality= , IJS: -sIjsParams=Qual‐
       ity=):
       The meaning of this is model-specific.  Two names are listed  for  each
       resolution;  the first (short) name is the value that must be passed to
       -sQuality, and the second (long) name is descriptive.  Each printer has
       its  own	 default value; for most printers, this is a reasonable 300 or
       360 DPI resolution.

       For Epson Stylus printers:

       Within each specified resolution, the quality is generally listed  from
       worst  to  best	(and generally higher quality means lower speed).  For
       example, 360 DPI Unidirectional is usually better than 360 DPI.	 Char‐
       acteristics  of	specific models and individual printers may affect the
       orderings to some degree; on many printers, with certain papers, unidi‐
       rectional  printing  will improve quality substantially more than using
       an otherwise better quality printing mode.

       The difference between different quality settings lies in the number of
       passes  made over each line.  High and Highest quality settings perform
       more passes, printing fewer dots with each pass over the same line  and
       using  different	 nozzles for each pass.	 This reduces banding effects,
       but requires more time.

       Interleave modes use algorithms within  the  printer  to	 generate  the
       sequence of rows printed.  These algorithms generally only work well at
       low printing resolutions.  Many printers do not support	this  kind  of
       printing at resolutions of 720 DPI and above, and some printers that do
       actually print just one row (using just one  nozzle  per	 color)	 at  a
       time.   While  this  particular use will produce extremely high quality
       (no banding whatsoever, normally), it is extremely slow and may eventu‐
       ally  damage  the  print head due to ink pooling.  All printers that we
       are aware of have no such trouble at 360 DPI.

       We generally recommend the following resolutions for the following pur‐
       poses:

       360x90

       360x120
	      Fast  economy  draft  output on plain paper (output will be very
	      banded and not very dark).

       180    Economy draft output on plain paper (output  will	 not  be  very
	      dark).

       360x180

       360x240
	      Draft  output on plain paper (output will not be solidly black);
	      economy draft output on good quality inkjet paper.

       360    Standard quality output on plain paper (output will  be  solidly
	      black); draft output on good quality inkjet paper.

       720x360
	      High  quality  output  on	 plain	paper; standard output on good
	      quality inkjet paper.

       720    Maximum quality on plain paper;  high  quality  on  good	inkjet
	      paper;  proofs  on photo-quality paper.  On many printers, there
	      will be little difference between	 this  and  720x360  on	 plain
	      paper.

       1440x720
	      High  quality  on	 photo	paper; use 1440x720 Highest Quality to
	      reduce microbanding if needed.  While this will  work  on	 plain
	      paper, it usually offers little improvement over 720 DPI.

       2880x720
	      Highest  quality	on photo paper.	 While this may yield slightly
	      improved quality, it will generally not be markedly superior  to
	      1440x720	Highest	 Quality,  except  on the Stylus Color 980 and
	      Stylus C70 and C80, where it may yield a noticeable improvement.
	      It takes as long to print as 1440x720 highest quality, but twice
	      as long to generate the output.

       1440x1440
	      An unsupported mode that offers higher quality than 2880x720 for
	      certain types of images on very high quality paper.  It does not
	      appear to offer any advantage on smooth tones, but  fine	detail
	      (particularly  vertical, and to a lesser extent near-horizontal)
	      it shows noticeable improvement.	It takes as long to  print  as
	      2880x720.	  1440x1440  highest  quality  takes  twice as long to
	      print.

       2880x1440
	      An unsupported mode that may offer higher quality than  2880x720
	      for certain types of images on very high quality paper.  Experi‐
	      ments conducted thus far demonstrate little if  any  improvement
	      over  1440x1440.	It takes twice as long to print as 2880x720 or
	      1440x1440, and as long to print as 1440x1440 highest quality.

       The following resolutions are supported on printers other than the Sty‐
       lus Pro (5000, 5500, 7000, 7500, 9000, 9500, and 10000) printers.  Res‐
       olutions for those printers are listed in a later section.  Please  see
       the notes at the end of this section.

       ──────────────────────────────────────────────────────────────────────
       360x90dpi       360 x 90 DPI Fast Economy Draft		  (1)
       180dpi	       180 DPI Economy Draft			  (2)
       360x180dpi      360 x 180 DPI Draft			  (2)
       360x180sw       360 x 180 DPI Draft			  (3)
       360x120dpi      360 x 120 DPI Economy Draft		  (4)
       360x120sw       360 x 120 DPI Economy Draft		  (5)
       360x240dpi      360 x 240 DPI Draft			  (4)
       360x240sw       360 x 240 DPI Draft			  (5)
       360dpi	       360 DPI					  (6)
       360uni	       360 DPI Unidirectional			  (6)
       360mw	       360 DPI Interleave			  (6, *)
       360mwuni	       360 DPI Interleave Unidirectional	  (6)
       360sw	       360 DPI					  (7, 17, *)
       360swuni	       360 DPI Unidirectional			  (7, 17)
       360hq	       360 DPI High Quality			  (7, 8, 17)
       360hquni	       360 DPI High Quality Unidirectional	  (7, 8, 17)
       720x360sw       720 x 360 DPI				  (9, 10)
       720x360swuni    720 x 360 DPI Unidirectional		  (9, 10)

       720mw	       720 DPI Interleave			  (11)
       720mwuni	       720 DPI Interleave Unidirectional	  (11)
       720sw	       720 DPI					  (9)
       720swuni	       720 DPI Unidirectional			  (9)
       720hq	       720 DPI High Quality			  (9)
       720hquni	       720 DPI High Quality Unidirectional	  (9)
       720hq2	       720 DPI Highest Quality			  (9)
       1440x720mw      1440 x 720 DPI Interleave		  (12)
       1440x720mwuni   1440 x 720 DPI Interleave Unidirectional	  (12)
       1440x720sw      1440 x 720 DPI				  (13)
       1440x720swuni   1440 x 720 DPI Unidirectional		  (13, 14)
       1440x720hq      1440 x 720 DPI Highest Quality		  (13)
       2880x720sw      2880 x 720 DPI				  (15)
       2880x720swuni   2880 x 720 DPI Unidirectional		  (15)
       1440x1440sw     1440 x 1440 DPI				  (16)
       1440x1440hq2    1440 x 1440 DPI Highest Quality		  (16)
       2880x1440sw     2880 x 1440 DPI				  (16)
       ──────────────────────────────────────────────────────────────────────

       (*)    This  resolution	is the default on all printers supporting this
	      setting.

       (1)    Works on printers that have a basic vertical spacing  of	1/90".
	      This includes the Stylus Color, Stylus Color 440, 460, 600, 640,
	      660, 670, and 1500, and Stylus Photo, Stylus Photo 700, 720, and
	      EX.

       (2)    Works  on	 most  printers	 that have a basic vertical spacing of
	      1/90, 1/180, or 1/360 inch.  This includes Stylus Color,	Stylus
	      Color  440,  460,	 600, 640, 660, 670, 800, 850, 900, 980, 1500,
	      1520, 3000, and Stylus Photo, Stylus Photo 700, 720 and EX.

       (3)    Works on Stylus C70, C80, and C82; and Stylus  Photo  950,  960,
	      2100, and 2200.

       (4)    Works  on	 older	printers with dot spacing of 1/120 inch.  This
	      includes the Stylus Color Pro, Pro XL, 400, and 500.

       (5)    Works on newer printers with dot spacing of  1/120  inch.	  This
	      includes	the  Stylus C20, C40, C41, C42, C60, C61, and C62; the
	      Stylus Color 480, 580, 680, 740, 760, 777,  860,	880,  83,  and
	      1160,  and  the  Stylus Photo 750, 780, 785, 790, 810, 820, 830,
	      870, 875, 890, 895, 915, 925, 1270, 1280, 1290, and  2000P,  and
	      the Stylus Scan 2000 and 2500.

       (6)    Works  on	 all printers that do not support variable drop sizes.
	      This includes the Stylus Color, Stylus Color 400, 440, 460, 500,
	      600, 640, 660, 800, 850, 1500, 1520, and 3000, Stylus Color Pro,
	      Stylus Color Pro XL, and Stylus Photo, Stylus Photo 700, and EX.

       (7)    Works on all printers that do support variable drop sizes.  This
	      includes	all  supported	Epson Stylus printers except for those
	      listed in note (6).

       (8)    Recommended only on processors slower than 200 MHz,  the	system
	      is  heavily  loaded  with a faster processor, or if problems are
	      experienced at 720x360.

       (9)    Works on all supported printers except for Stylus Color,	Stylus
	      Color  Pro,  Stylus  Color  Pro XL, Stylus Color 1500, 1520, and
	      3000.

       (10)   On printers that do not support variable	drop  size  (see  note
	      (4)),  this  will	 print as fast as 360 DPI, and faster than 360
	      DPI High Quality.	 It will take twice as long to	generate  out‐
	      put, which may be important on a heavily loaded system or a pro‐
	      cessor slower than 200 MHz.

       (11)   Works on some older printers, including the Stylus Color, Stylus
	      Color  400,  500,	 600,  800,  850, 1500, 1520, and 3000, Stylus
	      Color Pro, and Stylus Color Pro XL.  Not recommended except  for
	      the Stylus Color, Stylus Color 1500, 1520, and 3000.

       (12)   Works on Stylus Color 600, 800, 850, 1520, and 3000.  Not recom‐
	      mended unless other 1440x720 modes do not work.

       (13)   Works on all printers that support 1440x720 DPI.	This  includes
	      all supported printers except for the Stylus Color, Stylus Color
	      Pro, Pro XL, 400, 440, 460,  480,	 500,  and  1500,  and	Stylus
	      Photo.  In addition, this may not work correctly on Stylus Color
	      1520 and Stylus Color 3000.

       (14)   This is identical to 1440 x 720 Highest Quality (1440x720hq)  on
	      the Stylus Color 900.

       (15)   Works  on all printers that support 2880x720 DPI.	 This includes
	      the Stylus C60, C61, C62, C70, C80, and C82,  the	 Stylus	 Color
	      680, 777, 880, 83, and 980, and Stylus Photo 780, 790, 810, 820,
	      830, 890, 915, 925, 950, 960, 1280, and 1290.   This  resolution
	      is  offered  on the Stylus Photo 2100 and 2200, but may not work
	      correctly.

       (16)   Works on Epson Stylus Photo 830, 925, 950, 960, 2100, 2200; Sty‐
	      lus  C61,	 C62,  C70, C80, C82 ; Stylus Pro 7600 and 9600.  This
	      resolution is not supported by Epson on the C70 and C80, but  it
	      works correctly on at least some such printers.

       (17)   These  resolutions print at particularly high speed on the Epson
	      Stylus Photo 950, 960, 2100, and	2200  when  printing  in  Four
	      Color  Standard or Three Color Composite modes, or when printing
	      in monochrome or grayscale with any  ink	type  other  than  Two
	      Level Grayscale, Seven Color Photo, or Quadtone.

       The Stylus Pro printers (Stylus Pro 5000, 5500, 7000, 7500, 7600, 9000,
       9500, 9600, and 10000) support additional  interleave  modes  known  as
       Full  Overlap  (FOL),  Four Pass, and FOL2.  The Stylus Pro 5500, 7500,
       7600, 9500, 9600, and 10000 additionally have a mode called MW2.	 These
       modes  can  only	 be  used at certain resolutions.  Stylus Pro printers
       support the following resolutions:

       ────────────────────────────────────────────────────────────
       180dpi		  180 DPI
       360dpi		  360 DPI
       360uni		  360 DPI Unidirectional
       360mw		  360 DPI Interleave
       360mwuni		  360 DPI Interleave Unidirectional
       360fol		  360 DPI Full Overlap
       360foluni	  360 DPI Full Overlap Unidirectional
       360fol2		  360 DPI FOL2
       360fol2uni	  360 DPI FOL2 Unidirectional
       360mw2		  360 DPI MW2
       360mw2uni	  360 DPI MW2 Unidirectional
       720x360dpi	  720 x 360 DPI
       720x360uni	  720 x 360 DPI Unidirectional
       720x360fol	  720 x 360 DPI FOL
       720x360foluni	  720 x 360 DPI FOL Unidirectional
       720x360fol2	  720 x 360 DPI FOL2
       720x360fol2uni	  720 x 360 DPI FOL2 Unidirectional
       720x360mw2	  720 x 360 DPI MW2
       720x360mw2uni	  720 x 360 DPI MW2 Unidirectional
       720dpi		  720 DPI
       720uni		  720 DPI Unidirectional
       720mw		  720 DPI Interleave
       720mwuni		  720 DPI Interleave Unidirectional

       720fol		  720 DPI Full Overlap
       720foluni	  720 DPI Full Overlap Unidirectional
       720fourp		  720 DPI Four Pass
       720fourpuni	  720 DPI Four Pass Unidirectional
       1440x720dpi	  1440 x 720 DPI
       1440x720uni	  1440 x 720 DPI Unidirectional
       1440x720mw	  1440 x 720 DPI Interleave
       1440x720mwuni	  1440 x 720 DPI Interleave Unidirectional
       1440x720fol	  1440 x 720 DPI FOL
       1440x720foluni	  1440 x 720 DPI FOL Unidirectional
       1440x720fourp	  1440 x 720 DPI Four Pass
       1440x720fourpuni	  1440 x 720 DPI Four Pass Unidirectional
       ────────────────────────────────────────────────────────────

       In addition, the Stylus Pro 7600 and 9600 printers support the  follow‐
       ing resolutions:

       ──────────────────────────────────────────────────────────────
       2880x720dpi	   2880 x 720 DPI
       2880x720uni	   2880 x 720 DPI Unidirectional
       2880x720mw	   2880 x 720 DPI Interleave
       2880x720mwuni	   2880 x 720 DPI Interleave Unidirectional
       2880x720fol	   2880 x 720 DPI FOL
       2880x720foluni	   2880 x 720 DPI FOL Unidirectional
       2880x720fourp	   2880 x 720 DPI Four Pass
       2880x720fourpuni	   2880 x 720 DPI Four Pass Unidirectional
       1440x1440dpi	   1440 x 1440 DPI
       1440x1440uni	   1440 x 1440 DPI Unidirectional
       1440x1440mw	   1440 x 1440 DPI Interleave
       1440x1440mwuni	   1440 x 1440 DPI Interleave Unidirectional
       1440x1440fol	   1440 x 1440 DPI FOL
       1440x1440foluni	   1440 x 1440 DPI FOL Unidirectional
       1440x1440fourp	   1440 x 1440 DPI Four Pass
       1440x1440fourpuni   1440 x 1440 DPI Four Pass Unidirectional
       2880x1440dpi	   2880 x 1440 DPI
       2880x1440uni	   2880 x 1440 DPI Unidirectional
       2880x1440mw	   2880 x 1440 DPI Interleave
       2880x1440mwuni	   2880 x 1440 DPI Interleave Unidirectional
       2880x1440fol	   2880 x 1440 DPI FOL
       2880x1440foluni	   2880 x 1440 DPI FOL Unidirectional
       2880x1440fourp	   2880 x 1440 DPI Four Pass
       2880x1440fourpuni   2880 x 1440 DPI Four Pass Unidirectional
       ──────────────────────────────────────────────────────────────

       For PCL printers (including Hewlett-Packard and Lexmark 4076):

       ─────────────────────────────────────────────────────────────────────────────
       150dpi	    150x150 DPI		     (should work on all printers)
       300dpi	    300x300 DPI		     (should work on all printers, C-RET on
					     DJ 850/855/870/890)
       600x300dpi   600x300 DPI		     (DJ 6xx/810/812/840/842/895)
       600mono	    600x600 DPI monochrome
					     (DJ 6xx (except 69x) /8xx/1100/1120)
       600dpi	    600x600 DPI		     (DJ 69x/840/9xx/1220/2000/2500,
					     PhotoSmart P1000/P1100, LJ5/5Si/6)
       ─────────────────────────────────────────────────────────────────────────────

       Note:  the  higher  resolutions of newer PCL printers using "Photo-Ret"
       are not yet supported.

       For Lexmark printers other than the 4076:

       ───────────────────────────────────────────────────────────
       300x600dpi     300 DPI x 600 DPI

       600dpi	      600 DPI
       600hq	      600 DPI high quality
       600uni	      600 DPI Unidirectional
       1200dpi	      1200 DPI
       1200hq	      1200 DPI high quality
       1200hq2	      1200 DPI highest quality
       1200uni	      1200 DPI	Unidirectional
       2400x1200dpi   2400 DPI x 1200 DPI		    (Z52)
       2400x1200hq    2400 DPI x 1200 DPI high quality	    (Z52)
       2400x1200hq2   2400 DPI x 1200 DPI highest quality   (Z52)
       ───────────────────────────────────────────────────────────

       For Canon printers:

       1200 DPI printers (BJC 7000, BJC 7100, BJC 8500):

       ───────────────────────────────
       300x300dpi     300x300 DPI
       300x300dmt     300x300 DPI DMT
       600x600dpi     600x600 DPI
       600x600dmt     600x600 DPI DMT
       1200x600dpi    1200x600 DPI
       1200x1200dpi   1200x1200 DPI
       ───────────────────────────────

       1440 DPI printers
	      (BJC 30, BJC 50, BJC 55, BJC 80, BJC 85, BJC 210, BJC  240,  BJC
	      250, BJC 1000, BJC 2000, BJC 3000, BJC 4300, BJC 4400, BJC 6000,
	      BJC 6100, BJC 6200,  BJC	6500,  BJC  8200,  S400,  S450,	 S800,
	      S4500):

       ───────────────────────────────
       360x360dpi     360x360 DPI
       360x360dmt     360x360 DPI DMT
       720x360dpi     720x360 DPI
       720x720dpi     720x720 DPI
       1440x720dpi    1440x720 DPI
       1440x1440dpi   1440x1440 DPI
       ───────────────────────────────

   Ink Types
       This  is	 printer  type specific.  The option names are case sensitive.
       The option names are case sensitive.  Two names	are  listed  for  each
       resolution;  the first (short) name is the value that must be passed to
       -sInkType, and the second (long) name  is  descriptive.	 Not  all  ink
       types are supported on all printers.

       Option STP: -sInkType=inktype Option IJS: -sIjsParams=InkType=inktype

       For Epson and Lexmark (other than the 4076) printers:

       Six  color  printers can print using four color inks or all six colors.
       Six color mode is recommended for photographs.  Four color mode may  be
       useful when printing text with embedded graphics to reduce ink consump‐
       tion, or to print higher quality	 with  Ordered,	 Fast,	or  Very  Fast
       dithering (see below).

       The  Composite modes use only color inks (no black) to produce all col‐
       ors and black.  These ink types are rarely useful, but on certain types
       of paper they may produce a smoother image than that produced by mixing
       black ink in.  The Epson Stylus Color 1500 cannot mix  black  ink  with
       colored inks; on this printer, Three Color Composite must be used.

       Photo7	   Seven Color Photo (CcMmYKk, for the Epson Stylus

		   Photo 2100 and 2200, and Stylus Pro 7600 and 9600)
       PhotoCMYK   Six Color Photo
       PhotoCMY	   Five Color Photo Composite
       CMYK	   Four Color Standard
       RGB	   Three Color Composite
       Quadtone	   Quadtone grayscale inks (special third party inksets
		   designed to produce superior results for grayscale
		   images)
       Gray2	   Two Level Grayscale (Kk, for the Epson stylus Photo
		   2100 and 2200, and Stylus Pro 7600 and 9600)

       For Canon printers:

       Gray	   Black
       RGB	   Color
       CMYK	   Black/Color
       PhotoCMY	   Photo/Color
       PhotoCMYK   Photo

       For PCL (Hewlett-Packard and Lexmark 4076) color printers:

       CMYK    Color + Black Cartridges
       Photo   Color + Photo Cartridges (For Deskjet 69x only)

       Black  and  white  PCL  printers (laser printers, in particular) do not
       allow any value to be specified for the ink type.

   Media Types
       This is printer type specific.  The option names	 are  case  sensitive.
       Two names are listed for each resolution; the first (short) name is the
       value that must be passed to -sMediaType, and the second (long) name is
       descriptive.

       Option	STP:   -sMediaType=mediatype   Option  IJS:  -sIjsParams=Medi‐
       aType=mediatype

       For Epson and Lexmark (other than the 4076) inkjet printers:

       Plain	      Plain Paper
       PlainFast      Plain Paper Fast Load
       Postcard	      Postcard
       GlossyFilm     Glossy Film
       Transparency   Transparencies
       Envelope	      Envelopes
       BackFilm	      Back Light Film
       Matte	      Matte Paper
       Inkjet	      Inkjet Paper
       Coated	      Photo Quality Inkjet Paper
       GlossyPhoto    Premium Glossy Photo Paper
       Luster	      Premium Luster Photo Paper
       Photo	      Photo Paper
       Glossy	      Photo Quality Glossy Paper
       Ilford	      Ilford Heavy Paper
       Other	      Other

       We have found that glossy photo papers not  specifically	 designed  for
       Epson  printers	generally  perform  poorly in Epson printers.  The ink
       tends to pool on the paper, causing muddy shadows and possibly  leaving
       ink  on the printer rollers.  Use of the highest quality printing modes
       (1440x720 highest quality and  2880x720	unidirectional)	 produces  the
       best  result  on	 such  papers, probably because printing is slower and
       there is more time for the ink to dry.

       For Canon printers:

       Plain	      Plain Paper
       Transparency   Transparencies
       BackFilm	      Back Print Film
       Fabric	      Fabric Sheets
       Envelope	      Envelope
       Coated	      High Resolution Paper
       TShirt	      T-Shirt Transfers
       GlossyFilm     High Gloss Film
       GlossyPaper    Glossy Photo Paper
       GlossyCards    Glossy Photo Cards
       GlossyPro      Photo Paper Pro

       For PCL (Hewlett-Packard and Lexmark 4076) inkjet printers:

       Plain		Plain
       Bond		Bond
       Premium		Premium
       Glossy		Glossy/Photo
       Transparency	Transparency
       GlossyQD		Quick-dry Photo
       TransparencyQD	Quick-dry Transparency

       PCL laser printers do not allow specification of any media type.

   Media Sources
       This is printer type specific.  The option names are case sensitive.

       Option  STP:  -sInputSlot=mediasource  Option  IJS:  -sIjsParams=Media‐
       Source=mediasource

       Epson  printers	without	 a  roll  feed	mechanism should not have this
       option set.

       For Epson printers with a roll feed mechanism without  a	 paper	cutter
       (Stylus	Photo  785,  825,  870,	 875, 890, 895, 915, 1200, 1270, 1280,
       1290):

       Standard	  Standard
       Roll	  Roll Feed

       For Epson printers with a roll feed mechanism with a paper cutter (Sty‐
       lus Photo 925, 950, 960, 2100, 2200):

       Standard	     Standard
       RollCutPage   Roll feed, cut each page
       RollCutNone   Roll feed, do not cut

       NOTE:  The  -sInputSlot=RollCutPage  does not work with the STP driver,
       only with the IJS driver.

       For Epson Stylus Pro printers without a roll feed mechanism (Stylus Pro
       5000, 5500):

       CutSheet1      Cut sheet bin 1
       CutSheet2      Cut sheet bin 2
       CutSheetAuto   Cut sheet autoselect
       ManualSelect   Manual selection

       For  Epson  Stylus  Pro printers with a roll feed mechanism (Stylus Pro
       7000, 7500, 7600, 9000, 9500, 9600, 10000, 10600):

       Standard	  Standard
       Roll	  Roll Feed

       For Canon printers:

       Auto	       Auto Sheet Feeder
       Manual	       Manual with Pause
       ManualNP	       Manual without Pause

       For PCL (Hewlett-Packard and Lexmark 4076) printers.  Different	print‐
       ers allow different choices out of this set.

       Standard	       Standard		       (Feed from printer defined source)
       Manual	       Manual
       MultiPurpose    Tray 1
       Upper	       Tray 2
       Lower	       Tray 3
       LargeCapacity   Tray 4
       Portable	       Portable Sheet Feeder
       Desktop	       Desktop Sheet Feeder
       Tray	       Tray
       Tray2	       Tray 2
       Optional	       Optional Source
       Auto	       Autoselect

       For Lexmark printers other than the 4076:

       Auto	  Auto Sheet Feeder
       Manual	  Manual with Pause
       ManualNP	  Manual without Pause

   Media Sizes
       This  is	 printer-specific;  we cannot list the correct values for each
       printer here.  The option names	are  case-sensitive.   Two  names  are
       listed  for  each  resolution; the first (short) name is the value that
       must be passed to -sPAPERSIZE, and the second (long) name  is  descrip‐
       tive.   This  option  does  not	set GhostScript up to use a paper size
       other than the default; it only tells the driver to set up the  printer
       for a different paper size.  The default paper size is

       Option  STP:  -sPAPERSIZE=papersize  Option  IJS: -sPAPERSIZE=papersize
       (for known Ghostscript paper sizes) or

		-dDEVICEWIDTHPOINTS=x -dDEVICEHEIGHTPOINTS=y

       where x and y are the width and height of the  paper  respectively,  in
       points (1/72")

	  * Common English paper sizes

       Letter	      Letter		      8.5in x 11in	x=612, y=792
       Legal	      Legal		      8.5in x 14in	x=612, y=1008
       Tabloid	      Tabloid		      11in x 17in	x=792, y=1224
       Executive      Executive		      7.25in x 10.5in	x=522, y=756
       Postcard	      Postcard		      100mm x 147mm	x=283, y=416
       w216h360	      3x5					x=216, y=360
       w288h432	      4x6					x=288, y=432
       w324h495	      Epson 4x6 Photo Paper			x=324, y=495
       w360h504	      5x7					x=360, y=504
       w360h576	      5x8					x=360, y=576
       8x10	      8x10					x=576, y=720
       Statement      Manual		      5.5in x 8.5in	x=396, y=612
       TabloidExtra   12x18					x=864, y=1296

       SuperB	      13x19					x=936, y=1368

	  * Common photographic paper sizes

       w576h864	    8x12    Sometimes used for 35 mm   x=576, y=864
       w792h1008    11x14			       x=792, y=1008
       w1152h1440   16x20			       x=1152, y=1440
       w1152h1728   16x24   20x24 for 35 mm	       x=1152, y=1728
       w1440h1728   20x24			       x=1440, y=1728
       w1440h2160   20x30   24x30 for 35 mm	       x=1440, y=2160
       w1584h2160   22x30   Common watercolor size     x=1440, y=2160
       w1728h2160   24x30			       x=1728, y=2160
       w1728h2592   24x36   Sometimes used for 35 mm   x=1728, y=2592
       w2160h2880   30x40			       x=2160, y=2880

	  International Paper Sizes (mostly taken from BS4000:1968)

	  * A series: Paper and boards, trimmed sizes
	  *
	  * A sizes are in the ratio 1 : sqrt(2).  A0 has a total area
	  * of 1 square metre.	Everything is rounded to the nearest
	  * millimetre.	 Thus, A0 is 841mm x 1189mm.  Every other A
	  * size is obtained by doubling or halving another A size.

       w4768h6749   4A	  1682mm x 2378mm   x=4768, y=6749
       w3370h4768   2A	  1189mm x 1682mm   x=3370, y=4768
       A0	    A0	  841mm x 1189mm    x=2384, y=3370
       A1	    A1	  594mm x  841mm    x=1684, y=2384
       A2	    A2	  420mm x  594mm    x=1191, y=1684
       A3	    A3	  297mm x  420mm    x=842, y=1191
       A4	    A4	  210mm x  297mm    x=595, y=842
       A5	    A5	  148mm x  210mm    x=420, y=595
       A6	    A6	  105mm x  148mm    x=297, y=420
       A7	    A7	  74mm x  105mm	    x=210, y=297
       A8	    A8	  52mm x   74mm	    x=148, y=210
       A9	    A9	  37mm x   52mm	    x=105, y=148
       A10	    A10	  26mm x   37mm	    x=73, y=105

	  * Stock sizes for normal trims.
	  * Allowance for trim is 3 millimetres.

       w2437h3458   RA0	  860mm x 1220mm   x=2437, y=3458
       w1729h2437   RA1	  610mm x  860mm   x=1729, y=2437
       w1218h1729   RA2	  430mm x  610mm   x=1218, y=1729
       w864h1218    RA3	  305mm x  430mm   x=864, y=1218
       w609h864	    RA4	  215mm x  305mm   x=609, y=864

	  * Stock sizes for bled work or extra trims.

       w2551h3628   SRA0   900mm x 1280mm   x=2551, y=3628
       w1814h2551   SRA1   640mm x  900mm   x=1814, y=2551
       w1275h1814   SRA2   450mm x  640mm   x=1275, y=1814
       w907h1275    SRA3   320mm x  450mm   x=907, y=1275
       w637h907	    SRA4   225mm x  320mm   x=637, y=907

	  * "B" series: Posters, wall charts and similar items.

       w5669h8016   4B ISO    2000mm x 2828mm	x=5669, y=8016
       w4008h5669   2B ISO    1414mm x 2000mm	x=4008, y=5669
       ISOB0	    B0 ISO    1000mm x 1414mm	x=2834, y=4008
       ISOB1	    B1 ISO    707mm x 1000mm	x=2004, y=2834
       ISOB2	    B2 ISO    500mm x  707mm	x=1417, y=2004

       ISOB3	    B3 ISO    353mm x  500mm	x=1000, y=1417
       ISOB4	    B4 ISO    250mm x  353mm	x=708, y=1000
       ISOB5	    B5 ISO    176mm x  250mm	x=498, y=708
       ISOB6	    B6 ISO    125mm x  176mm	x=354, y=498
       ISOB7	    B7 ISO    88mm x  125mm	x=249, y=354
       ISOB8	    B8 ISO    62mm x   88mm	x=175, y=249
       ISOB9	    B9 ISO    44mm x   62mm	x=124, y=175
       ISOB10	    B10 ISO   31mm x   44mm	x=87, y=124
       B0	    B0 JIS			x=2919, y=4127
       B1	    B1 JIS			x=2063, y=2919
       B2	    B2 JIS			x=1459, y=2063
       B3	    B3 JIS			x=1029, y=1459
       B4	    B4 JIS			x=727, y=1029
       B5	    B5 JIS			x=518, y=727
       B6	    B6 JIS			x=362, y=518
       B7	    B7 JIS			x=257, y=362
       B8	    B8 JIS			x=180, y=257
       B9	    B9 JIS			x=127, y=180
       B10	    B10 JIS			x=90, y=127

	  * "C" series: Envelopes or folders suitable for A size stationery.

       C0	  C0	  917mm x 1297mm   x=2599, y=3676
       C1	  C1	  648mm x  917mm   x=1836, y=2599
       C2	  C2	  458mm x  648mm   x=1298, y=1836
       C3	  C3	  324mm x  458mm   x=918, y=1298
       C4	  C4	  229mm x  324mm   x=649, y=918
       C5	  C5	  162mm x  229mm   x=459, y=649
       w354h918	  B6-C4	  125mm x  324mm   x=354, y=918
       C6	  C6	  114mm x  162mm   x=323, y=459
       DL	  DL	  110mm x  220mm   x=311, y=623
       w229h459	  C7-6	  81mm x  162mm	   x=229, y=459
       C7	  C7	  81mm x  114mm	   x=229, y=323
       C8	  C8	  57mm x   81mm	   x=161, y=229
       C9	  C9	  40mm x   57mm	   x=113, y=161
       C10	  C10	  28mm x   40mm	   x=79, y=113

	  * US CAD standard paper sizes

       ARCHA	     ArchA		9x12in	  x=648, y=864
       ARCHA_trans   ArchA transverse	12x9 in	  x=864, y=648
       ARCHB	     ArchB		12x18in	  x=864, y=1296
       ARCHB_trans   ArchB transverse	18x12in	  x=1296, y=864
       ARCHC	     ArchC		18x24in	  x=1296, y=1728
       ARCHC_trans   ArchC transverse	24x18in	  x=1728, y=1296
       ARCHD	     ArchD		24x36in	  x=1728, y=2592
       ARCHD_trans   ArchD transverse	36x24in	  x=2592, y=1728
       ARCHE	     ArchE		36x48in	  x=2592, y=3456
       ARCHE_trans   ArchE transverse	48x36in	  x=3456, y=2592

	  * Foolscap

       w612h936	  American foolscap	  x=612, y=936
       w648h936	  European foolscap	  x=648, y=936

	  * Sizes for book production
	  * The BPIF and the Publishers Association jointly recommend ten
	  * standard metric sizes for case-bound titles as follows:

       w535h697	  Crown Quarto	       189mm x 246mm   x=535, y=697
       w569h731	  Large Crown Quarto   201mm x 258mm   x=569, y=731
       w620h782	  Demy Quarto	       219mm x 276mm   x=620, y=782
       w671h884	  Royal Quarto	       237mm x 312mm   x=671, y=884

       w348h527	  Crown Octavo	       123mm x 186mm   x=348, y=527
       w365h561	  Large Crown Octavo   129mm x 198mm   x=365, y=561
       w391h612	  Demy Octavo	       138mm x 216mm   x=391, y=612
       w442h663	  Royal Octavo	       156mm x 234mm   x=442, y=663

	  * Paperback sizes in common usage

       w314h504	  Small paperback	    111mm x 178mm   x=314, y=504
       w314h513	  Penguin small paperback   111mm x 181mm   x=314, y=513
       w365h561	  Penguin large paperback   129mm x 198mm   x=365, y=561

	  * Miscellaneous sizes

       w283h420	  Hagaki Card				100 x 148 mm		    x=283, y=420
       w420h567	  Oufuku Card				148 x 200 mm		    x=420, y=567
       w340h666	  Long 3				Japanese long envelope #3   x=340, y=666
       w255h581	  Long 4				Japanese long envelope #4   x=255, y=581
       w680h941	  Kaku					Japanese Kaku envelope #4   x=680, y=941
       COM10	  Commercial 10	 US Commercial 10 env	x=297, y=684
       w315h414	  A2 Invitation	 US A2 invitation	x=315, y=414

   Color Balancing Values: (min,max,default)
       All  of the values below are interpreted as being relative to norms for
       a particular printer established through testing, not  absolute	values
       of any kind.

       The STP parameter is specified.	The IJS parameter is created by remov‐
       ing the -d and beginning the options list with -sIjsParams.  Thus

       -dCyan=xxx

       becomes

       -sIjsParams=Cyan=xxx

       -dCyan=xxx      xxx:   0.0 ... 4.0  (1.0)
       -dMagenta=xxx   xxx:   0.0 ... 4.0  (1.0)
       -dYellow=xxx    xxx:   0.0 ... 4.0  (1.0)

       These three options allow specification of the cyan, magenta, and  yel‐
       low  levels independently, for rebalancing the levels.  Normally, these
       should be adjusted to yield neutral gray, but  they  can	 be  used  for
       other effects.

       -dBrightness=xxx	  xxx:	 0.0 ... 2.0  (1.0)

       Adjust the brightness of the image.  0.0 gives a fully black image; 2.0
       gives a fully white image.  Values greater than 1 will result in	 black
       not  being  solid and highlights turning white; values less than 1 will
       result in white not being perfectly clear and shadows turning black.

       -dContrast=xxx	xxx:   0.0 ... 4.0  (1.0)

       Adjust the contrast of the image.  0.0  gives  a	 solid	gray  for  the
       entire image, the exact gray depending upon the brightness chosen.

       -dGamma=xxx   xxx:   0.1 ... 4.0	 (1.0)

       Adjust the gamma of the image, over and above the printer-specific cor‐
       rection.	 Gamma less than 1.0 will result  in  a	 darker	 image;	 gamma
       greater	than  1.0  will result in a lighter image.  Unlike brightness,
       gamma adjustment does not change the endpoints; it merely  changes  the
       shape of the input->output curve.

       -dDensity=xxx   xxx:   0.1 ... 2.0  (1.0)

       Adjust  the amount of ink deposited on the paper.  If you've chosen the
       correct paper type and you're getting ink bleeding through the paper or
       puddling,  try  reducing	 the density to the lowest value you can while
       still achieving solid black.  If you're not getting solid  black,  even
       with the contrast and brightness at 1.0, try increasing the density.

       All  of	the  printers  supported here actually need less than 100% ink
       density in most cases, so the actual density is	something  other  than
       the  nominal  density setting.  The effective density setting cannot go
       above 100%, so if a value specified will result in an excessively  high
       density level, it will be silently limited to 1.0.

       -dSaturation=xxx	  xxx:	 0.0 ... 9.0  (1.0)

       Adjust  the brilliance of colors.  0.0 results in pure grayscale; using
       this with -dColor=1 is one way of getting grayscale  (see  below	 under
       -dColor for a full discussion).	Saturation of less than 1.0 results in
       more muted colors; saturation of	 greater  than	1.0  results  in  more
       vibrant	colors.	  Very	high  saturation often results in very strange
       effects,	 including  posterization  and	banding	 that  might  not   be
       expected.  For normal purposes, the saturation should generally be less
       than 1.5.

   Dithering Algorithms:
       The option names are case sensitive.  Two names	are  listed  for  each
       resolution;  the first (short) name is the value that must be passed to
       -sDither, and the second (long) name is descriptive.

       Option STP: -sDither=algorithm
       Option IJS: -sIjsParams=Dither=algorithm

       Adaptive	  Adaptive Hybrid
       EvenTone	  EvenTone screening (experimental)
       Ordered	  Ordered
       Fast	  Fast
       VeryFast	  Very Fast
       Floyd	  Hybrid Floyd-Steinberg

       For highest quality, we recommend use  of  Adaptive  Hybrid  dithering.
       For  continuous tone images, Ordered works just as well and is somewhat
       faster.	Ordered dithering yields noticeably inferior results with text
       and intricate line art, particularly at high resolutions.

       EvenTone	 dithering  is a relatively new screening technology developed
       by Raph Levien.	It offers superior smoothness in highlights  and  mid‐
       tones,  and  increased  accuracy in shadows, resulting in significantly
       improved results overall.  The version of EvenTone  dithering  that  we
       are  using  is enhanced with some additional improvements we have made.
       It currently only operates with CMYK (4, 6, or 7 color output) with RGB
       input, and should be considered experimental.  Note that it is patented
       (see US patent 5917614), but it is licensed for use with GPL  software.
       See http://www.levien.com/patents.html for more information.

       Fast  dithering,	 which	is  a simplified version of ordered dither, is
       significantly faster, but color accuracy is worse, particularly on  six
       color  printers	and  printer using variable dot sizes.	On simple four
       color printers, the quality is quite reasonable, although color	print‐
       ing  will  show	more speckling in dark tones than Ordered dither.  For
       single dot size printers, printing  grayscale,  this  algorithm	yields
       almost  identical results to Ordered with some performance improvement.
       On three color printers, the results should be very similar to Ordered.

       Very Fast is even faster than Fast, with even more loss of quality.  It
       shows  even  more  speckling,  and the output is heavily patterned.  On
       laser printers, and possibly on certain kinds of	 text  and  line  art,
       Very Fast dithering may actually yield the best quality.

       Error  diffusion	 algorithms  (Hybrid  Floyd-Steinberg is such an algo‐
       rithm) perform very well at high densities, and are capable of  render‐
       ing  very  fine	detail well, but they tend to exhibit artifacts in the
       form of waves or worms of dots which results in noticeable texturing in
       pale areas.  Furthermore, pale areas immediately adjacent to white take
       a while to build up sufficient error to print at all.   This  is	 some‐
       times called tearing  Its use is not recommended.

   Output Type
       STP:

       -dColor=x   x:	0 ... 2 (1 on color printers, 0 otherwise)

       0   Grayscale
       1   Color (RGB)
       2   Black and white

       IJS:

       Black and white:	  -sProcessColorModel=DeviceGray -dBitsPerSample=1
       Grayscale:	  -sProcessColorModel=DeviceGray
       Color (RGB):	  -sProcessColorModel=DeviceRGB
       Color (CMYK):	  -sProcessColorModel=DeviceCMYK

       Choose  color  vs.  grayscale  output.	Color  output  is the default.
       Choosing -dColor=0 results in only black ink (no color ink) being used,
       which is faster and usually results in the most accurate grayscale, but
       at the expense of smoothness.  If you want  composite  color  (using  a
       mixture	of  color  and	black inks to produce gray), use -dColor=1 and
       -dSaturation=0.0 (see -dSaturation above).

       In addition, using -dColor=0 uses luminance (perceived  brightness)  of
       red,  green,  and blue to choose output levels.	Blue of a given inten‐
       sity is perceived to be much darker than red,  which  in	 turn  appears
       darker  than  green.  -dColor=1 and -dSaturation=0.0 does not use lumi‐
       nance.

       -dColor=2 prints only black  and	 white	(thresholding).	  This	option
       always uses Fast dithering unless you specify Very Fast.

       CMYK  output  may  be  used  with the IJS driver only.  It is useful if
       you're printing a CMYK graphic and want explicit control over the inks.
       Generally it yields inferior quality, as Gimp-Print has good algorithms
       for converting RGB (screen) into CMYK (inks)  that  take	 into  account
       paper  type,  ink type, and other variables.  In CMYK mode, the bright‐
       ness, contrast, and saturation controls do not function.

   Image type (to optimize the dither):
       STP:

       -dImageType=x   x:   0 ...  2 (0)

       IJS:

       -sIjsParams=ImageType=x

       Select the image type most representative of what's being printed.

	0   Line art (color or gray scale)
	1   Primarily solid colors or smooth gradients (color or gray scale)
	2   Continuous-tone photographs (color or gray scale)

       Option 0 is the fastest.	 It generates  strong,	but  not  particularly
       accurate,  colors.  There may be some fairly sharp color transitions in
       this mode.

       Option 1 generates more accurate colors, but is slower.

       Option 2 generates  the	most  accurate	colors,	 but  is  considerably
       slower.

       Note  that  any	of  the modes may be used with either color or black &
       white output.  If black and white output is requested, but a color mode
       used,  composite color will be printed.	This generally offers smoother
       tone, but less purity of gray or black, than pure black ink.   Further‐
       more,  it  is possible to tune the color of the gray (to achieve warmer
       or cooler effects) using the color controls in this fashion.

       Specifying a lower GhostScript resolution (with -r) results  in	faster
       color conversion.  For example, if you print at 1440x720 DPI, but spec‐
       ify a Ghostscript resolution of 360 DPI (with -r360),  output  will  be
       significantly  faster and there will be much less difference in perfor‐
       mance between the three image type options.

   EXAMPLES:
       Note that a lot of these options are used for demonstration;  generally
       adjusting the density is a bad idea!

       Example 1 (print charts to file, using A4 paper, color, 360 dpi):

	   gs -sDEVICE=stp -sModel=escp2-ex -dDensity=1.6 -dGamma=1.5 -dSaturation=0.9 \
	      -dBrightness=.4 -dImageType=1 -sPAPERSIZE=a4 \
	      -sOutputFile=itsyourchoice.prn foo.ps

	   gs -sDEVICE=ijs -sIjsServer=/usr/bin/ijsgimpprint \
	      -sDeviceManufacturer=EPSON -sDeviceModel=escp2-ex -sPAPERSIZE=a4 \
	      -sOutputFile=itsyourchoice.prn \
	      -sIjsParams=Density=1.6,Gamma=1.5,Saturation=0.9,Brightness=0.4,ImageType=1 \
	      foo.ps

       Example 2 (print color photograph to /dev/lp0 at maximum quality):

	   gs -q -dSAFER -dNOPAUSE -sDEVICE=stp -sModel=escp2-870 -dDensity=0.8 \
	      -r1440x720 -sQuality=1440x720hq -sMediaType=GlossyPhoto \
	      -dImageType=2 -sOutputFile=/dev/lp0 foo.ps

	   gs -sDEVICE=ijs -sIjsServer=/usr/bin/ijsgimpprint \
	      -sDeviceManufacturer=EPSON -sDeviceModel=escp2-870 \
	      -sOutputFile=/dev/lp0 \
	      -sIjsParams='Quality=1440x720hq,MediaType=GlossyPhoto,Density=0.8,ImageType=2' \
	      foo.ps

       Example 3 (print pure black text to stdout)

	   gs -q -dSAFER -dNOPAUSE -sDEVICE=stp -sModel=escp2-660 -dDensity=0.8 -r720 \
	      -sQuality=720sw -dColor=2 -sOutputFile=- foo.ps

	   gs -sDEVICE=ijs -sIjsServer=/usr/bin/ijsgimpprint \
	      -sDeviceManufacturer=EPSON -sDeviceModel=escp2-660 -dIjsUseOutputFD \
	      -sProcessColorModel=DeviceGray -dBitsPerSample=1 -sOutputFile=- \
	      -sIjsParams='Quality=720sw,Density=0.8' foo.ps

SEE ALSO
       gs(1), gs-pcl3(1).

3rd Berkeley Distribution	       2			     GS-STP(1)
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