Zebra EPL no dithering option - Githubissues

apple / cups

Apple CUPS Sources

https://www.cups.org

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Zebra EPL no dithering option #6047

Open petec81 opened 1 year ago

petec81 commented 1 year ago

Im using CUPS with PDF and zebra barcode printers. I have noticed that the printout comes with wiggly lines on the barcode. when i use a windows driver i have the option to turn the output to strict B/W so the issue goes away. I cant find something like that in cups. Any idea how this can be accomplished?

lukepfarrar commented 1 year ago

I had the same problem which was caused by the mandatory anti-aliasing in the pdftoraster cups-filter. See https://github.com/OpenPrinting/cups-filters/pull/129

Setting to false (below) and rebuilding the filter sorted it for me. It needs to be optional. I have yet to explore https://github.com/michaelrsweet/lprint

pr.set_render_hint(poppler::page_renderer::antialiasing, true);
pr.set_render_hint(poppler::page_renderer::text_antialiasing, true);
pr.set_render_hint(poppler::page_renderer::antialiasing, false);
pr.set_render_hint(poppler::page_renderer::text_antialiasing, false);