Ql-800 Label Sizes

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Joke Grinman

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Aug 3, 2024, 12:35:40 PM8/3/24

to kowstherreara

I just bought a Brother QL-800 label printer with a 62mm wide continuous tape roll installed. Trying to make use of the continuous tape, I wanted to add an individual paper size (a custom length, in that case). Alas, all paper lengths fail except those provided in the default PPD (which are 29mm and 100m), with a red flashing light on the printer.

I am aware of What's the easiest way to add custom page sizes to a .ppd? on Stack Overflow and also of the brpapertoollpr_ql800 tool from Brother. I wrote myself a script to manipulate the PPD file. If I start with a blank file and add 62mmx29mm and 62mmx100mm, they print fine. All other sizes fail.

The problem can somewhat be solved by using the brother-ql package from pypi. Yet I cannot print from print dialogues, but I managed to write a script to print e.g. multi page pdf by using the convert tool.The big plus: It works with endless settings AND the readme claims to print black and red on special rolls. Both features are not available via CUPS.

I am using a Brother QL-800 label printer to print labels of size 90 x 29 mm. Paper size looks correct on the print dialog but on some computers (not all) the printer displays an error that says that the paper size is incorrect. Apparently FR is setting the wrong paper size in some cases. What can I do to better pinpoint the problem? Are there any diagnostic steps I can take?

Hello. All computers are apparently the same. All have the correct drivers and configuration. The application loads the same .fr3 file in all cases and the page size is set correctly inside that file. Here is the relevant snippet:

I have found strange behaviour around page sizes in the past. FR seems to search the list of papers for the current printer by dimension, even when you say "A6", and if it doesn't find an exact match, it defaults to A4.

Across a number of printer brands and models I own, the paper dimensions for A5 and A6 varied by fractions of a mm and so FR didn't think some printers supported that size. Note that the 148mm side of A5 and A6 is officially truncated and NOT 148.5 (half of the 297 of an A4), although some printers have the half mm.

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