Hi Armin,

„AutoCAD's calibration feature I think uses the calibration data to generate an incorrect memory drawing to compensate the printer drivers malfunction”

I think same. But even if it is a malfunction of the driver and not of LibreCAD, the feature is good to have!

I do not know if you now the complete way how Autocad does the “repair”. If you want I can give you print-screens

Thanks for answer and for your help in this issue.

My printer is a Brother HL-5250DN.

Harry

Von: LordOfBikes [via LibreCAD] [mailto:[hidden email]]
Gesendet: Dienstag, 18. Juni 2013 22:25
An: umbauwfb
Betreff: Re: AW: How can I calibrate a printer in LibreCAD

Hi Harry,

you have contacted the developers already, they are present here in the forum.

To your problem, this is certainly caused by the printer driver. I've tested your issue with two HP Laser printer and both results was OK.

When AutoCAD has this calibration feature, there must be some printer and plotter out there which have the same problem.

LibreCAD uses Qt's printing capabilities, so it is platform independent. When printing LibreCAD or more precisely the Qt library requests the printer driver for information about its physical resolution. With this resolution the drawing is generated in memory and shifted to the printer driver. In your case the information from the printer driver seems to be wrong.

AutoCAD's calibration feature I think uses the calibration data to generate an incorrect memory drawing to compensate the printer drivers malfunction. This could be done for LibreCAD too, but I could not say when.

I will create a feature request for your issue, that a developer who is familiar with printing can do this.

Armin