Public bug reported:
Running Ubuntu 14.04 running stock hplip 3.14.3
Printer HP Officejet Pro X476dw MFP
hp-check -t output is attached
Problem:
Initially I noticed that printing documents with Hebrew fonts results in
low quality with fuzzy lines. After some debugging I was able to trace
this down to the fact that by default CUPS converts the print job to a
300dpi PS before giving it to the hp driver:
D [24/Oct/2014:07:22:01 +0200] [Job 261] Printer make and model: HP HP
Officejet Pro X576dw MFP
D [24/Oct/2014:07:22:01 +0200] [Job 261] Running command line for pstops:
pstops 261 schlomo hebrew-test.pdf 1 'finishings=3 media=iso_a4_210x297mm
output-bin=face-down print-color-mode=color print-quality=4 sides=one-sided
job-uuid=urn:uuid:c1da9224-d10b-3c2f-6a99-487121b8864c
job-originating-host-name=localhost time-at-creation=1414128121
time-at-processing=1414128121 Duplex=None PageSize=A4'
D [24/Oct/2014:07:22:01 +0200] [Job 261] No resolution information found in the
PPD file.
D [24/Oct/2014:07:22:01 +0200] [Job 261] Using image rendering resolution 300
dpi
D [24/Oct/2014:07:22:01 +0200] [Job 261] Running command line for gs: gs -q
-dNOPAUSE -dBATCH -dSAFER -sDEVICE=ps2write -sOUTPUTFILE=%stdout
-dLanguageLevel=3 -r300 -dCompressFonts=false -dNoT3CCITT -dNOINTERPOLATE -c
'save pop' -f /var/spool/cups/tmp/066575456f596
I was able to fix the problem by adding this resolution setting to the
PPD:
*DefaultResolution: 600x600dpi
As a result the print job is converted at 600dpi instead of 300dpi which
leads to the expected good result:
D [24/Oct/2014:07:22:33 +0200] [Job 262] Printer make and model: HP HP
Officejet Pro X576dw MFP
D [24/Oct/2014:07:22:33 +0200] [Job 262] Running command line for pstops:
pstops 262 schlomo hebrew-test.pdf 1 'Duplex=None finishings=3
media=iso_a4_210x297mm output-bin=face-down print-color-mode=color
print-quality=4 sides=two-sided-long-edge
job-uuid=urn:uuid:83e69459-c350-37e5-417d-9ca00f8c6bd9
job-originating-host-name=localhost time-at-creation=1414128153
time-at-processing=1414128153 PageSize=A4'
D [24/Oct/2014:07:22:33 +0200] [Job 262] Using image rendering resolution 600
dpi
D [24/Oct/2014:07:22:33 +0200] [Job 262] Running command line for gs: gs -q
-dNOPAUSE -dBATCH -dSAFER -sDEVICE=ps2write -sOUTPUTFILE=%stdout
-dLanguageLevel=3 -r600 -dCompressFonts=false -dNoT3CCITT -dNOINTERPOLATE -c
'save pop' -f /var/spool/cups/tmp/0666d544aec68
I think that the PPD is broken because it does not specify a resolution.
It would be nice if the PPD could be fixed.
** Affects: hplip
Importance: Undecided
Status: New
** Affects: hplip (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "Output of hp-check -t"
https://bugs.launchpad.net/bugs/1385055/+attachment/4243098/+files/hp-check.txt
** Also affects: hplip (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1385055
Title:
HP Officejet Pro X476dw MFP prints in 300dpi
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