Hello, I have problem with print quality.In sumatra is printed text made by many little dots instead of continuous black surface.The PDF file is very clear, but the printed sample has quality defects. May I ask what caused it?
The printers currently in use are ZDesigner GK888t, DASCOM TL-200, DASCOM DL-210Z, these three will have quality defects. Path of my PDF source file:tmppdfFile/test.pdf at main callmePicacho/tmppdfFile GitHub,
The way to avoid windows degrading a source PNG is to pass that through a Driver that holds the edges as aliased (or anti-aliased GREYSCALE) and does not use coloured jpeg or other PHOTO-graphic approximations to replace the crisp Graphics.
Having said that many SumatraPDF users get a passable output (QRcode can be degraded by 30% and still work) on a range of thermal printers by using Bartender or similar drivers that try to correct the colour to mono aberrations.
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