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I just tried to scan under Linux Mint 20.3 with my HP Color LaserJet Pro MFP M479fdw using xsane and GIMP (I also tried some other combinations), but it seems that I cannot get uncompressed high quality data from my scanner, only always some compression on top. After a discussion on launchpad (https://answers.launchpad.net/hplip/+question/702688) I now found the attached log file and have seen, that the scanner indeed provides more options, but that they are not really available/used (another one would be line art or black and white). I think what would be needed is "pwg:DocumentFormatapplication/octet-stream</pwg:DocumentFormat>" instead of jpeg or pdf, then I think it would also be uncompressed ...(?)
If that's not how it would/should work, is there any other way to get uncompressed high quality data from my scanner under Linux. I just double checked on a Windows computer with the Fax and Scan tool, which did the job without a problem, so at least it's not a Hardware issue.
Hiii I'm also experiencing compression artifacts with my Brother MFC-J5330DW and there seems to be no way of disabling it. With the official driver, the image is perfect, with sane-airscan, loads of jpeg glitches :(
Hi,
I just tried to scan under Linux Mint 20.3 with my HP Color LaserJet Pro MFP M479fdw using xsane and GIMP (I also tried some other combinations), but it seems that I cannot get uncompressed high quality data from my scanner, only always some compression on top. After a discussion on launchpad (https://answers.launchpad.net/hplip/+question/702688) I now found the attached log file and have seen, that the scanner indeed provides more options, but that they are not really available/used (another one would be line art or black and white). I think what would be needed is "pwg:DocumentFormatapplication/octet-stream</pwg:DocumentFormat>" instead of jpeg or pdf, then I think it would also be uncompressed ...(?)
If that's not how it would/should work, is there any other way to get uncompressed high quality data from my scanner under Linux. I just double checked on a Windows computer with the Fax and Scan tool, which did the job without a problem, so at least it's not a Hardware issue.
Thx
Björn
xsane-HP-Color-LaserJet-Pro-M478f-9f-[835929].log
xsane-HP-Color-LaserJet-Pro-M478f-9f-[835929].zip
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