1734117 - italic chinese glyphs are weirdly rotated (instead of slanted) when printed using FF with some printers/drivers

Status: NEW

(Core :: Printing: Output, defect)

Description

[tiuser4567]

Attachment: test_print.html

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.61 Safari/537.36

Steps to reproduce:

1. Open a page with italic chinese text (attached test_print.html) with Firefox
2. Print the page with a physical printer

• note that using Lexmark Universal v2 XL printer
• note that the browser may use Microsoft Yahei
  (or MingLiU if Chinese Traditional, Hong Kong S.A.R language support was installed)

Actual results:

The italic chinese characters are weirdly rotated/slanted when printed.
see https://drive.google.com/file/d/1tWZksb6AFuyGNCRo5YKrjTnfUUwkshMm/view?usp=sharing

which is different from what is seen on the print preview.

Expected results:

The italic chinese characters should follow the simulated italic as viewed in FF.
e.g. viewed in FF
https://drive.google.com/file/d/1hfCp9YE1GM2i-w82z5pQt0PXu5MVHamY/view?usp=sharing

• The issue doesn't happen with Chrome on the same printer
• The issue doesn't happen with same FF on another printer (HP LaserJet M605 PCL 6) see https://drive.google.com/file/d/1tWZksb6AFuyGNCRo5YKrjTnfUUwkshMm/view?usp=sharing
• The issue doesn't happen in Microsoft Print to PDF
• The issue is present in older FF version (89), did not test further in other versions as issue is not replicable with Chrome
• The issue is present even when using different chinese font (i.e. using MingLiU if Chinese (Traditional, Hong Kong S.A.R) language support was installed and MingLiU is present)

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The Bugbug bot thinks this bug should belong to the 'Core::Printing: Output' component, and is moving the bug to that component. Please revert this change in case you think the bot is wrong.

Comment 2

[Hiroyuki Ikezoe (:hiro)]

Setting S3 for now since it's not losing any contents.

Comment 3

[Jonathan Kew [:jfkthame]]

This reproduces for me when printing to my HP LaserJet CP1525n using the (automatically-installed) driver "HP LaserJet Professional CP1520 Series PCL 6".

However, using the same printer with the driver "HP Universal Printing PS" (downloaded from the HP support website) the issue doesn't occur; the glyphs are slanted as expected (rather than rotated).

Comment 4

[tiuser4567]

(In reply to tiuser4567 from comment #0)

• The issue doesn't happen with same FF on another printer (HP LaserJet M605 PCL 6) see https://drive.google.com/file/d/1tWZksb6AFuyGNCRo5YKrjTnfUUwkshMm/view?usp=sharing

Sorry, just noticed I used the wrong link for above, should be
https://drive.google.com/file/d/1XZ3on2FVaomz1FTCYSE5CW7DEwn9ngcT/view?usp=sharing