Bad printing quality

[kovica]

I'm using the latest SumatraPDF from github. I'm trying to print a PDF (https://drive.google.com/file/d/0B-qoYfDTAZ8QWVdVN0t2NndYdGM/view?usp=sharing) This is result from Firefox: This is result from SumatraPDF:

Why this huge printing quality difference?

[sameershingala]

Hi Just following up on issue I have a similar situation in this case using Sumatra PDF to print labels to label printer. When printing using Adobe or FoxIT PDF to a label printer print out comes out with strong lines while printing using Sumatra PDF prints with wavy lines, dithered and similar to print quality as above comment. I unfortunately don't have scans of the 2 print quality to upload but can organise to get it as it was experienced onsite while at a customer.

[GitHubRulesOK]

@kjk Many forum and stack overflow users not just SumatraPDF say similar when using PAI to a 203 dpi Monochrome Thermal Printer. Adobe and partners such as Foxit / BlueBeam etc. have driver settings to optimise for thermal printers rather than use generic windows drivers.

Zebra Drivers have often been replaced by Bartender Seagull Drivers with usually better results.

Other factors include the darkness switches and calibration on such Pixel ON/OFF devices can have a significant effect and in some case inappropriate Ink/Media will give very poor results.

Basically if using PAI printing you need to use a MONOCHROME driver that reallocates stray coloured pixels WELL and not simply threshold them.

[GitHubRulesOK]

Without sample here is an MS PAINT emulation from pixel perfect B&W barcode PNG into colour PDF then sent via colour Image printing to a mono B&W device the correct method should be send B&W image direct to printer memory without double corruption via RG&B, so this is NOT a SumatraPDF issue.

 

Send the image direct to printer without going via SumatraPDF printing which MS PIA uses lossy conversion.