I'm not sure if this completely solves the issue.
When I send a CUPS Printer test page, like this one
With default settings I get the page about a centimeter displaced down and half centimeter borders without print, thus, the top ruler is missing up to the top 1;4 of the numerals, the side rulers are missing the smaller scale ticks almost entirely and the bottom ruler bleeds outside of the page, with the bottom border of the paper almost at the numerals' baseline.
I couldn't find an obvious way to correct this via CUPS.
I'm using A4 paper, CUPS 1.3.11 and GhostScript 864.
The "Imageable area" reads:
Page size 210,0x297,0mm
A similar problem of displacement and "cutting" happens with CUPS 1.4.5 and ghostscript 8.71, but this time the printable area goes from 4x4mm to 206x293mm