desktop-packages team mailing list archive

[Schlomo Schapiro <1385055@xxxxxxxxxxxxxxxxxx>]

The attached PDF looks very bad when printed in 300dpi and looks good
when printed in 600dpi. Somehow this font makes the problem very
visible, with latin fonts the difference in quality was less profound.

In 300dpi the lines of the letters look ragged and not crisp.

** Attachment added: "test PDF that looks bad in 300dpi"
   https://bugs.launchpad.net/ubuntu/+source/hplip/+bug/1385055/+attachment/4243099/+files/hebrew-test.pdf

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to hplip in Ubuntu.
https://bugs.launchpad.net/bugs/1385055

Title:
  HP Officejet Pro X476dw MFP prints in 300dpi

Status in HP Linux Imaging and Printing:
  New
Status in “hplip” package in Ubuntu:
  New

Bug description:
  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.

To manage notifications about this bug go to:
https://bugs.launchpad.net/hplip/+bug/1385055/+subscriptions