Public bug reported:
I use pdftocairo as the default renderer in CUPS to print to my HP
LaserJet printer. It's the tool that better manages PDF documents with
shading and transparency (common in beamer presentations and PDFs
generated by cairo). Everything worked fine until I discovered some
pages in documents were incorrectly printed.
I tried to print a PDF document (produced by pdfTeX) containing the
Helvetica-Narrow fonts, and some lines of the document exhibited wrong
character spacing. I tried to print the same document using Chrome and
the text was printed with correct spacing so the printer wasn't the
responsible.
After changing the default PDF->PS renderer I discovered the fault was
in pdftocairo because any conversion with pdftops and pdf2gs resulted in
correct character spacing on my screen. Changing the PS language level
did not work. Also, this bug doesn't manifest when pdfTeX uses the URW
base 35 fonts instead of the Adobe ones.
I am attaching a PDF document that can be converted with pdftocairo,
pdftops and pdf2ps with pdftocairo being the only one that looks
different at the narrow fonts.
** Affects: cairo (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "PDF test case."
https://bugs.launchpad.net/bugs/1790242/+attachment/5183198/+files/testcase.pdf
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https://bugs.launchpad.net/bugs/1790242
Title:
Converting PDF to PS with pdftocairo results in wrong character
spacing with some Adobe fonts
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