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Print page only in half width with dot matrix (ex: EPSON LX-310 or EPSON LX-300+ II)

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I have this problem since update to 46.0.1 When I print to dot matrix printer (EPSON LX310 or EPSON LX300+ II), web page only print in half width but when I print using inkjet or laser printer, there is no problem Same problem happen when I change the computer but also using Firefox 46.0.1 Never happen in previous version

Print Preview show full page like usual but when I print, it only print in half any idea?

I have this problem since update to 46.0.1 When I print to dot matrix printer (EPSON LX310 or EPSON LX300+ II), web page only print in half width but when I print using inkjet or laser printer, there is no problem Same problem happen when I change the computer but also using Firefox 46.0.1 Never happen in previous version Print Preview show full page like usual but when I print, it only print in half any idea?

Alla svar (6)

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Tried before Not working It happens only on dot matrix printer inkjet or laser no problem

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So, deleting all the preference settings for those specific printers in the the Firefox prefs.js file didn't work?

Was Firefox closed when you deleted those preferences?

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Closed Tried to delete and prefs.js and application data / mozilla Reinstall Firefox still same

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Reinstall with 45.0 worked Are there any changes with print section? Never happen with previous version until 46.0.1

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No changes to 'printing' specifically that I am aware of. Sorry, that's all I have towards trying to fix that issue.