#******************************************************************************
# File:     @(#)$Id: reports.txt,v 2.16+ 2003/05/07 15:24:17 Martin Exp $
# Contents: Hardware compatibility reports for pcl3
# Author:   Martin Lottermoser, Greifswaldstrasse 28, 38124 Braunschweig,
#           Germany. Electronically: Martin.Lottermoser at t-online.de.
#
#******************************************************************************
#									      *
#	Copyright (C) 2000, 2001, 2002, 2003 by Martin Lottermoser	      *
#	All rights reserved						      *
#									      *
#******************************************************************************
#
# For a description of the format and the meaning of the entries in this file,
# see how-to-report.txt in the pcl3 distribution.
#
# The reports are sorted by the following criteria:
# - company and printer name (basically alphabetically ascending)
# - pcl3 version (descending)
# - ghostscript version (descending)
# - date (descending)
#
# The success and failure items within a report are preferably sorted as
# follows:
# - colour model: Gray, RGB, CMY, CMY+K, CMYK
# - resolution (ascending)
# - intensity levels (ascending)
#
# Note that the classification as success or failure is the responsibility of
# the person who provided the report. In the case of failure, you should read
# the accompanying comment in order to find out what went wrong. There are
# cases where the failure is not due to pcl3.
#
#******************************************************************************

# Hewlett-Packard 2000C/2000CN Professional Series Color Printers
# (includes 2000Cse, 2000Cxi, and 2000CN)

Name: Torsten Ian Smith
Date: 2001-04-18
Printer: HP 2000C Version 9.5.1.R
Ghostscript version: 6.50
pcl3 version: 3.2
Success: -sDEVICE=pcl3 -sColorModel=CMYK -dCompressionMethod=9
  -sPageCountFile=/var/spool/pagecount -sIntensityRendering=Floyd-Steinberg
  -sSubdevice=unspec -sMedium=plain -sPrintQuality=1

Name: Torsten Ian Smith
Date: 2001-04-08
Printer: HP 2000C Version 9.5.1.R
Ghostscript version: 6.01
pcl3 version: 3.0.2
Remarks: Settings derived from MS-windows printfile using pcl3opts.
Success: gs -sDEVICE=pcl3 -sSubdevice=unspec -dSendNULs -sPJLLanguage=PCL3GUI
  -dOnlyCRD -r300 -sColourModel=CMYK -dBlackLevels=4 -dCMYLevels=4
  -sPrintQuality=presentation -sMedium=plain -dCompressionMethod=9

#******************************************************************************

# Hewlett-Packard 2500CM Professional Series Color Printer (model C2685A)

Name: Ian Leonard
Date: 2001-07-17
Printer: HP Deskjet 2500CM C2685A FW-8.3.6
Ghostscript version: 6.50
pcl3 version: 3.2
Remarks: Printer display remained "Processing Job" after job completed printing.
         Tests were done on a Windows 2000 platform using AFPL Ghostscript
         6.50 compiled with pcl3.  This distribution is available at 
         http://www.denver.com.au/downloads/gs-pcl.
Success: -sDEVICE=pcl3 -sColorModel=CMYK -sSubdevice=unspec
         -dCompressionMethod=9 -r600 
Success: -sDEVICE=pcl3 -sColorModel=CMYK -sSubdevice=unspec
         -dCompressionMethod=9.
  The above produces 300dpi.
Success: -sDEVICE=pcl3 -sSubdevice=unspec -dSendNULs=600
         -sPJLLanguage=PCL3GUI -dOnlyCRD -r300 -sColourModel=CMYK
         -dBlackLevels=4 -dCMYLevels=4 -sPrintQuality=presentation
         -sMedium=transparency -dCompressionMethod=9.
  The above worked only if the command
   << /PCLInit1 <1B2A6F375708090000070101> >> setpagedevice
  was included before the document to be printed.

#******************************************************************************

# Hewlett-Packard DesignJet 500 42" (non-PS) (Wide-format printer)

Name: Sergey Zaikov
Date: 21.04.2003
Printer: HP DesignJet 500 42", Engine F/W:A.02.01
Ghostscript version: AFPL, revision 704
pcl3 version: 3.3
Remarks: 1. Really needs gamma-correction.
         2. I didn't try to print with 300dpi.
Success: gs -sDEVICE=pcl3 -sSubdevice=unspec -sPJLLanguage=PCL3GUI -dOnlyCRD \
            -r600 -sColourModel=CMYK -dCMYLevels=4 -sPrintQuality=presentation\
            -sMedium=plain -sIntensityRendering=Floyd-Steinberg \
            -sOutputFile=levels-test.prn levels-test.ps
Remarks: -sIntensityRendering other then Floyd-Steinberg gives blank fields
            from 0 to 17 at test with 43 levels.
	-sIntensityRendering=halftone doesn't need gamma-correction,
            but black fields from 0 to 27 are blank.
        -dCMYLevels=2 leads to the insertion of broad white horizontal stripes
        (height 13+/-0.5 mm) between parts of the page.

#******************************************************************************

# Hewlett-Packard DeskJet 670C

Name: Francesco Potort
Date: 2003-02-20
Printer: hp deskjet 670c
Ghostscript version: Debian gs 6.53-3 (GPL)
pcl3 version: 3.3
Success:  -sDEVICE=pcl3 -sModel=unspec
	  -r300 -sColourMode=mono -sPrintQuality=draft.
Success:  -sDEVICE=pcl3 -sModel=unspec
	  -r600 -sColourMode=mono -sPrintQuality=draft.
Success:  -sDEVICE=pcl3 -sModel=unspec
	  -r600 -sColourMode=mono -sPrintQuality=presentation.
Success:  -sDEVICE=pcl3 -sModel=unspec
	  -r600 -sColourMode=CMYK -sPrintQuality=presentation.

#******************************************************************************

# Hewlett-Packard DeskJet 697C

Name: Oliver Schurr
Date: 2001-02-02
Printer: Hewlett-Packard DeskJet 697C
Ghostscript version: AFPL GS 6.50
pcl3 version: 3.0.2
Success: -sDEVICE=hpdj690c
Success: -sDEVICE=hpdj690c -r600x300
Success: -sDEVICE=hpdj690c -r600
Success: -sDEVICE=hpdj690c -ColorModel=CMYK
Success: -sDEVICE=hpdj690c -r600x300 -ColorModel=CMYK
Remarks: in each case I used 'lpr -Praw test.pcl' to send the file to the
  printer

#******************************************************************************

# Hewlett-Packard DeskJet 850C (model C2145A)

Name: Martin Lottermoser
Date: 2000-10-21
Printer: Hewlett-Packard DeskJet 850C, model C2145A, revision: 9.20 01/14/95
Ghostscript version: Aladdin ghostscript 6.01
pcl3 version: pre-3.0
Remarks: All tests were made with levels-test.ps. I have made no remarks on
  recognizable halftoning problems except where the result was seriously wrong.
  This applies also to the classification as success or failure.
Success: -sDEVICE=hpdj850c -r75.
  This resolution is too small to be useful.
Failure: -sDEVICE=hpdj850c -r150.
  In the 43-levels test for black, fields 4 and 5 became white again (non-
  monotonic behaviour). The same gaps appear with the other bands.
  This is apparently a ghostscript problem, see the following test.
  The behaviour is the same in GNU ghostscript 5.50.
Success: -sDEVICE=hpdj850c -r150 -dNoHalftoning
Success: -sDEVICE=hpdj850c -r300
Failure: -sDEVICE=hpdj850c -r300 -dBlackLevels=4.
  In the black band of the 43-levels test, fields 1, 3, 5, 7, 9, 11, 22, 24,
  26, 28, and 30 have white gaps on the right. Similar gaps appear in the
  other bands. This is a problem with gs 6.01 which does not appear with
  GNU ghostscript 5.50. See also the following test.
Success: -sDEVICE=hpdj850c -r300 -dBlackLevels=4 -dNoHalftoning
Success: -sDEVICE=hpdj850c -r600
Success: -sDEVICE=hpdj850c -r75 -sColourModel=CMY.
  This resolution is too small to be useful.
  Composite black is mapped to true black by the printer.
Failure: -sDEVICE=hpdj850c -r150 -sColourModel=CMY.
  Composite black is mapped to true black by the printer.
  In the 43-levels test for black, fields 4 and 5 became white again (non-
  monotonic behaviour).
  This is apparently a ghostscript problem, see the following test.
Success: -sDEVICE=hpdj850c -r150 -sColourModel=CMY -dNoHalftoning.
  Composite black is mapped to true black by the printer.
Success: -sDEVICE=hpdj850c -r300 -sColourModel=CMY.
  Composite black is mapped to true black by the printer.
Success: -sDEVICE=hpdj850c -r75 -sColourModel=CMYK.
  This resolution is too small to be useful.
Failure: -sDEVICE=hpdj850c -r150 -sColourModel=CMYK.
  In the 43-levels test for black, fields 4 and 5 became white again (non-
  monotonic behaviour). The three CMY bands show a diminished intensity in the
  same fields, though not quite as obvious.
  This is apparently a ghostscript problem, see the following test.
Success: -sDEVICE=hpdj850c -r150 -sColourModel=CMYK -dNoHalftoning
Success: -sDEVICE=hpdj850c -r300 -sColourModel=CMYK
Success: -sDEVICE=hpdj850c -r300 -sColourModel=CMYK -dBlackLevels=4
  -dCMYLevels=3.
  The CMY colorants are far too saturated (I didn't override the transfer
  functions).
Success: -sDEVICE=hpdj850c -r300 -sColourModel=CMYK -dBlackLevels=4
  -dCMYLevels=4.
  The CMY colorants are far too saturated (again, no transfer functions).

#******************************************************************************

# Hewlett-Packard DeskJet 940C

Name: Francesco Potort
Date: 2003-02-20
Printer: hp deskjet 940c
Ghostscript version: Debian gs 6.53-3 (GPL)
pcl3 version: 3.3
Success:  -sDEVICE=pcl3 -sModel=unspec
	  -r300 -sColourMode=mono -sPrintQuality=draft.
Success:  -sDEVICE=pcl3 -sModel=unspec
	  -r600 -sColourMode=mono -sPrintQuality=draft.
Success:  -sDEVICE=pcl3 -sModel=unspec
	  -r600 -sColourMode=mono -sPrintQuality=presentation.
Success:  -sDEVICE=pcl3 -sModel=unspec
	  -r600 -sColourMode=CMYK -sPrintQuality=presentation.

#******************************************************************************

# Hewlett-Packard DeskJet 970C (model C6429A)

Name: Patrick Brison
Date: 2001/01/29
Printer: DeskJet970Cxi (model C6429A)
         Serial Number: ES989130ZPJQ
         Service ID: 09345
         FW Revision: BF410063
         PCL Default Symbol Set: 341
Ghostscript version: 6.50
pcl3 version: 3.0.2
Media configuration file: none used
Remarks: Three series of test were made:
   - monochrome support
   - colours support
   - duplex support
   In summary:
     Different X and Y resolutions (600x300, 2400x1200) do not
     seem to work.
     The combination color/normal/600 dpi does not seem to work.
     Some options must be avoided for some modes to work correctly
     Duplex settings seem to work fine in all modes

##################
# Monochrome tests
##################

# Draft 300 dpi
Success: -sDEVICE=pcl3
   -dSendNULs -sPJLLanguage=PCL3GUI -dOnlyCRD
   -sColourModel=Gray -sPrintQuality=draft -r300

# Draft 600x300 dpi
Failure: -sDEVICE=pcl3
   -dSendNULs -sPJLLanguage=PCL3GUI -dOnlyCRD
   -sColourModel=Gray -sPrintQuality=draft -r600x300.
   No output, printer loads page, power led blinks but nothing happens.

# Normal 300 dpi
Success: -sDEVICE=pcl3
  -dSendNULs -dOnlyCRD
  -sColourModel=Gray -sPrintQuality=normal -r300 -sMedium=plain.
  Removing / adding any of "-dSendNULs", "-dOnlyCRD" has no effect,
  Using "-sPJLLanguage=PCL3GUI" causes this mode to FAIL

# Normal 600x300 dpi
Failure: -sDEVICE=pcl3
   -dSendNULs -sPJLLanguage=PCL3GUI -dOnlyCRD
   -sColourModel=Gray -sPrintQuality=normal -r600x300.
   Right half of page missing

# Normal 600 dpi
Success: -sDEVICE=pcl3
   -dSendNULs -sPJLLanguage=PCL3GUI -dOnlyCRD
   -sColourModel=Gray -sPrintQuality=normal -r600

# Best 600 dpi
Success: -sDEVICE=pcl3
   -dSendNULs -sPJLLanguage=PCL3GUI -dOnlyCRD
   -sColourModel=Gray -sPrintQuality=presentation -r600

##############
# Colour tests
##############

# Draft 300 dpi
Success: -sDEVICE=pcl3
   -dSendNULs -sPJLLanguage=PCL3GUI -dOnlyCRD -dCMYLevels=4
   -sColourModel=CMYK -sPrintQuality=draft -r300

# Normal 300 dpi
Success: -sDEVICE=pcl3
   -sColourModel=CMYK -sPrintQuality=normal -r300 -sMedium=plain.
   Adding "-dCMYLevels=4" causes this mode to FAIL

# Normal 600 dpi
Failure: -sDEVICE=pcl3
   -dSendNULs -sPJLLanguage=PCL3GUI -dOnlyCRD -dCMYLevels=4
   -sColourModel=CMYK -sPrintQuality=normal -r600.
   No output, printer loads page, power led blinks but nothing happens.
Failure: -sDEVICE=pcl3
   -dSendNULs -sPJLLanguage=PCL3GUI -dOnlyCRD -dCMYLevels=4
   -sColourModel=CMYK -sPrintQuality=normal -r600 -sMedium=plain.
   No output. Printer loads a page and is "locked" with blinking power LED
Failure: -sDEVICE=pcl3
   -dSendNULs -dOnlyCRD -dCMYLevels=4
   -sColourModel=CMYK -sPrintQuality=normal -r600 -sMedium=plain.
  This NEARLY works! Output is sharp but colours are shifted to the
  right of the page (the page printed was "levels-test.ps")
Failure: -sDEVICE=pcl3
   -sColourModel=CMYK -sPrintQuality=normal -r600 -sMedium=plain.
  The output was just a plain nice black vertical bar, and the printer
  stayed "locked" with blinking power LED without ejecting the page.

# Best 600 dpi
Success: -sDEVICE=pcl3
   -dSendNULs -sPJLLanguage=PCL3GUI -dOnlyCRD -dCMYLevels=4
   -sColourModel=CMYK -sPrintQuality=presentation -r600

# Best 1200 dpi
Success: -sDEVICE=pcl3 -sSubdevice=unspec
   -dSendNULs -sPJLLanguage=PCL3GUI -dOnlyCRD
   -r1200 -sColourModel=CMY -sPrintQuality=presentation
   -sMedium=glossy -dCompressionMethod=2.
   Adding "-dCMYLevels=4" causes this mode to FAIL
   This mode only works with "-sColourModel=CMY"

##############
# Duplex tests
##############

# Book binding
Success: -sDEVICE=pcl3
   -dSendNULs -sPJLLanguage=PCL3GUI -dOnlyCRD
   -sDuplexCapability=oppositeLeadingEdge -dCompressionMethod=2
   -dDuplex=true -dTumble=false
   -sColourModel=mono -sPrintQuality=normal -r600

# Tablet binding
Success: -sDEVICE=pcl3
   -dSendNULs -sPJLLanguage=PCL3GUI -dOnlyCRD
   -sDuplexCapability=oppositeLeadingEdge -dCompressionMethod=2
   -dDuplex=true -dTumble=true
   -sColourModel=mono -sPrintQuality=normal -r600

#******************************************************************************

# Hewlett-Packard DeskJet 1100C

Name: Klaus Reimann
Date: 2000-12-08
Printer: HP DJ 1100C
Ghostscript version: 6.30
pcl3 version: 3.0.2
Success: -sPJLLanguage=PCL3GUI -dOnlyCRD -sDEVICE=pcl3 -sSubdevice=unspec
   -r300 -sColourModel=Gray -dBlackLevels=2.
  Specifying -dOnlyCRD is necessary.


Name: Klaus Reimann
Date: 2000-12-08
Printer: HP DJ 1100C
Ghostscript version: 6.30
pcl3 version: 3.0.1
pcl3opts: In colour: -r300 -dBlackLevels=4 -dCMYLevels=4, monochrome: -r600.
  In both cases, -sPJLLanguage=PCL3GUI was also issued.
Remarks: The results can be summarized as follows:

  1. Connection
     Success:
     a) no options
     b) -sPJLLanguage=PCL3GUI -dOnlyCRD
	The "-dOnlyCRD" is needed. Success only with Version >3.0.2.
     c) -dSendNULs
	No effect.
     Failure:
     a) -sPJLLanguage=PCL3GUI
	non-uniformly distributed vertical black lines.

  2. Compression
     Success: all Compression methods work
     a) no options
     b) -dCompressionMethod=2
     c) -dCompressionMethod=9

  3. Media type
     Success: all
     a) no options
     b) -sMedium=plain

  4. Print Quality
     Success: all
     a) no options
     b) -sPrintQuality=presentation

  5. Resolution
     Sucess:
     a) -r300 : all
     b) -r600 : Success with -sColourModel=Gray
     Failure: all other
     a) -r600 -sColourModel=CMYK

  6. Colour Models and Levels
     Success:
     a) -sColourModel=Gray -dBlackLevels=2
     b) -sColourModel=CMYK -dBlackLevels=2 -dCMYLevels=2
     Failure: all other
     a) -r300 -sColourModel=Gray -dBlackLevels=4
       This test gave white gaps in parts of levels-test.ps: in the 43-levels
       test, the gaps were on the right of some of the fields, in the
       401-levels case, there were white vertical lines in 6 groups, the first
       5 consisting of 19 lines each, the last of four. The distance between
       the lines within a group was 2mm. Apart from the gaps, the intensity
       increased monotonically.  
       Some of the corners were missing from the letters.
     b) -r600 -sColourModel=Gray -dBlackLevels=3
	non-monotonic intensity.
     c) -r600 -sColourModel=Gray -dBlackLevels=4
	non-monotonic intensity. Missing corners. Grouped vertical lines.
     d) -r300 -sColourModel=CMYK -dBlackLevels=2 -dCMYLevels=4
	Totally wrong colours.
     e) -dBlackLevels=3 -dCMYLevels=2
	Wrong colours: yellow becomes white, magenta yellow, and cyan magenta.
     f) -dBlackLevels=4 -dCMYLevels=3
	 When gradually passing horizontally from one colour to the next
	 (e.g., red or green to black) in a vertical direction, there are
	 horizontal strips where one colorant is missing from the mix.
     g) -dBlackLevels=4 -dCMYLevels=4
	 Sometimes missing colorant. Some corners are missing from letters.

  7. Printer Model
     Success:
     a) unspec
     b) hpdj1120c

Success: -sDEVICE=pcl3 -sSubdevice=unspec -r300
   -sColourModel=Gray -dBlackLevels=2
Failure: -sPJLLanguage=PCL3GUI -sDEVICE=pcl3 -sSubdevice=unspec -r300
   -sColourModel=Gray -dBlackLevels=2.
  Black vertical stripes. But see test with pcl3 3.0.2 and using -dOnlyCRD.
Failure: -sDEVICE=pcl3 -sSubdevice=unspec -dCompressionMethod=9
  -r300 -sColourModel=Gray -sMedium=plain -sPrintQuality=presentation
  -dBlackLevels=4.
  This test gave white gaps in parts of levels-test.ps: in the 43-levels test,
  the gaps were on the right of some of the fields, in the 401-levels case,
  there were white vertical lines in 6 groups, the first 5 consisting of
  19 lines each, the last of four. The distance between the lines within a
  group was 2mm. Apart from the gaps, the intensity increased monotonically.
  Some of the corners were missing from the letters.
Success: -sDEVICE=pcl3 -sSubdevice=unspec -dSendNULs -r600 -sColourModel=Gray
  -sMedium=plain -sPrintQuality=presentation -dCompressionMethod=2
Failure: -sDEVICE=pcl3 -sSubdevice=unspec -dSendNULs -r600 -sColourModel=Gray
  -sMedium=plain -sPrintQuality=presentation -dCompressionMethod=2
  -dBlackLevels=3.
  The intensity does not increase monotonically.
Failure: -sDEVICE=pcl3 -sSubdevice=unspec -dSendNULs -r600 -sColourModel=Gray
  -sMedium=plain -sPrintQuality=presentation -dCompressionMethod=2
  -dBlackLevels=4.
  The intensity does not increase monotonically.
Failure: -sDEVICE=pcl3 -sSubdevice=unspec -dSendNULs -r600 -sColourModel=Gray
  -sMedium=plain -sPrintQuality=presentation -dCompressionMethod=2
  -dBlackLevels=4 -sPJLLanguage=PCL3GUI.
  Garbage (black vertical stripes) printed.
Failure: -sDEVICE=pcl3 -sSubdevice=unspec -dSendNULs -r600 -sColourModel=Gray
  -sMedium=plain -sPrintQuality=presentation -dCompressionMethod=2
  -dBlackLevels=4 -sPJLLanguage=PCL3GUI -dOnlyCRD.
  Black vertical stripes and nothing else.
Failure: -sDEVICE=pcl3 -sSubdevice=unspec -dCompressionMethod=9
  -r600 -sColourModel=Gray -sMedium=plain -sPrintQuality=presentation
  -dBlackLevels=4 -sPJLLanguage=PCL3GUI -dOnlyCRD.
  Black vertical stripes and nothing else.
Failure: -sDEVICE=pcl3 -sSubdevice=unspec -dCompressionMethod=9
  -r600 -sColourModel=Gray -sMedium=plain -sPrintQuality=presentation
  -dBlackLevels=4.
  Non-monotonic increase of intensities, many thin vertical lines (2 mm
  distance) in the 401 levels test section of levels-test.ps.
Success: -sDEVICE=pcl3 -sSubdevice=hpdj1120c -sColourModel=CMYK
  -sPrintQuality=presentation
Success: -sDEVICE=pcl3 -sSubdevice=unspec -dSendNULs -r300 -sColourModel=CMYK
  -dBlackLevels=2 -dCMYLevels=2 -sMedium=plain -sPrintQuality=presentation
  -dCompressionMethod=9
Failure: -sDEVICE=pcl3 -sSubdevice=unspec -dSendNULs -r300 -sColourModel=CMYK
  -dBlackLevels=2 -dCMYLevels=4 -sMedium=plain -sPrintQuality=presentation
  -dCompressionMethod=9.
  Totally wrong colours.
Failure: -sDEVICE=pcl3 -sSubdevice=unspec -dSendNULs -r300 -sColourModel=CMYK
  -dBlackLevels=3 -dCMYLevels=2 -sMedium=plain -sPrintQuality=presentation
  -dCompressionMethod=9.
  Wrong colours: yellow becomes white, magenta yellow, and cyan magenta.
Failure: -sDEVICE=pcl3 -sSubdevice=unspec -dSendNULs -r300 -sColourModel=CMYK
  -dBlackLevels=4 -dCMYLevels=3 -sMedium=plain -sPrintQuality=presentation
  -dCompressionMethod=2.
  When gradually passing from one colour to the next (e.g., red or green to
  black) in a vertical direction, there are horizontal strips where one
  colorant is missing from the mix.
Failure: -sDEVICE=pcl3 -sSubdevice=unspec -r300
  -sColourModel=CMYK -dBlackLevels=4 -dCMYLevels=4 -dCompressionMethod=2.
  When printing levels-test.ps, some corners are missing from letters.
  Using -dNoHalftoning does not help.
Failure: -sDEVICE=pcl3 -sSubdevice=unspec -r300
  -sColourModel=CMYK -dBlackLevels=4 -dCMYLevels=4 -dCompressionMethod=2
  -dNoHalftoning
  When printing levels-test.ps, some corners are missing from letters.
Failure: -sDEVICE=pcl3 -sSubdevice=unspec -r300
  -sColourModel=CMYK -dBlackLevels=4 -dCMYLevels=4 -dCompressionMethod=2
  -sPrintQuality=presentation.
  When printing levels-test.ps, some corners are missing from letters,
  and starting from intensity 17/42, levels are difficult to distinguish.
  Sometimes colours are missing.
Failure: -sDEVICE=pcl3 -sSubdevice=unspec -dSendNULs -r300 -sColourModel=CMYK
  -dBlackLevels=4 -dCMYLevels=4 -sMedium=plain -sPrintQuality=presentation
  -dCompressionMethod=2.
  Same result as previous test, i.e., no influence of -dSendNULs.
Failure: -sDEVICE=pcl3 -sSubdevice=unspec -r300
  -sColourModel=CMYK -dBlackLevels=4 -dCMYLevels=4 -dCompressionMethod=2
  -sPrintQuality=presentation -sPJLLanguage=PCL3GUI -dOnlyCRD -dNoHalftoning.
  When printing levels-test.ps, some corners are missing from letters.
Failure: -sDEVICE=pcl3 -sSubdevice=unspec -dSendNULs -r600 -sColourModel=CMYK
  -dBlackLevels=4 -dCMYLevels=4 -sMedium=plain -sPrintQuality=presentation
  -dCompressionMethod=2.
  Wrong colours, twice the size, wrong position.

#******************************************************************************

# Xerox DocuPrint M750

Name:  Russ Bohnhoff
Date:  01/17/01
Printer:  Xerox DocuPrint M750
Ghostscript version:  GNU 5.50
pcl3 version:  3.0.2
Remarks: any value other than 600 dpi will be printed at 600 dpi
Success: -sDEVICE=pcl3 -sSubdevice=unspec -r600 -sPrintQuality=normal
	-sMedium=plain -dCompressionMethod=2 -sColorModel=CMYK.
  This option gives me full color with no defects.
  Printing can only be done one page at a time or otherwise
  a page feed error (blinking red) occurs.
  Margins:
        TOP: 7/48"
        BOTTOM: 17/48"
        LEFT: 7/48"
        RIGHT: 17/48"

#******************************************************************************

# Xerox WorkCentre M940

Name: Rafael Escovar
Date: 2002-03-18
Printer: Xerox WorkCentre M940
Ghostscript version: GNU 6.53
pcl3 version: 3.3

Remarks: I have problems when printing multipage documents. 
  This is fixed using -dConfigureEveryPage=true (which I shall omit
  in the Success and Failure lines). 

Success: -sDEVICE=pcl3 -sSubdevice=unspec -r600 -sPrintQuality=normal
        -sMedium=plain -sColorModel=Gray.
  I get perfect output. Grayscaling seems to be correct.
  There was an excess of black ink which was fixed preprocessing a file
  with postscript  command:
  {0.3 exp} settransfer

Success: -sDEVICE=pcl3 -sSubdevice=unspec -r600 -sPrintQuality=normal
        -sMedium=plain -sColorModel=CMY+K.
  I get perfect output. 

Failure: -sDEVICE=pcl3 -sSubdevice=unspec -r600x300 -sPrintQuality=normal
        -sMedium=plain -sColorModel=Gray or CMY+K.
  The output is Ok, but flat. What was printed in one page before gets
  printed in half a page.

Failure: -sDEVICE=pcl3 -sSubdevice=unspec -r300 -sPrintQuality=normal
        -sMedium=plain -sColorModel=Gray or CMY+K.
  The output is partly readable but very overlapped.

Failure: -sDEVICE=pcl3 -sSubdevice=unspec -r600 -sPrintQuality=normal
        -sMedium=plain -sColorModel=CMYK.
  CMYK mode seems not to work with my printer. Although I get perfectly clear
  output the color disposition is not correct (I get blanks where there should
  be color).