435807 - Half-inch margins added to printouts.

Status: NEW

(Core :: Printing: Output, defect)

Description

[fantasai]

Mozilla seems to have a hard-coded minimum page margin. I can't print "full-bleed" PDFs.

Steps to Reproduce:

1. In Page Setup create a custom paper size with zero margins and select it.
2. Open Print Preview or print a web page using the Print to File option.

Expected Results:

Zero margins, i.e. the initial containing block should be the entire paper size.

Actual Results:

Mozilla puts ~1/2 inch margins between the paper edge and the content.

Tested on Gecko/2008052221 Minefield/3.0pre in Linux.

Comment 1

[fantasai]

Actually, the margin is *in addition* to the specified margins, and it is exactly half an inch.

Comment 2

[Daniel Holbert [:dholbert]]

Yup, this is known behavior -- the half-inch comes from the about:config pref:
   print.[printer_name].print_margin_XXX
where XXX = top,right,bottom, left.

This pref describes the offset from edge of printable area to edge of content.

This is as distinct from the "unwriteable margin", which is what gets set by the Page-Setup dialog (*.print_unwriteable_margin_XXX).  The unwriteable margin defines the offset from edge of paper to edge of printable area.

(To complicate things further, there's one more pref -- print_edge_XXX -- which defines offset from edge of printable area to header / footer position)

Sadly, we don't have a field in the Linux print-configuration dialogs for the print_margin_XXX or the print_edge_XXX prefs.

I believe we have the same basic behavior on OS X (with the OS X print dialogs) so this isn't a linux-only issue.

(Windows uses our old print-configuration dialogs, though, which give access to the print_margin and print_edge prefs.  So, should not be a problem on Windows)

Easy workaround = tweak the print_margin prefs by hand.  :)

Comment 4

[David Baron :dbaron: (⌚️UTC-4, no longer working on Mozilla)]

Maybe duplicate of bug 221706?