Hi Rainer, The current version of scangearmp2 is 4.10 ( https://canoncanadafr.custhelp.com/app/answers/answer_view/a_id/1034243/~/scangear-mp-v.-4.10-for-linux-%28debian-packagearchive%29). You can install libmfo2-canon (https://github.com/Ordissimo/libmfp2-canon), which will allow you to use your device with xsane. I have not finished, the Flatbed, works, I plan to add the 600dpi. For the ADF, only the first page is taken but I'll fix that after the vacations.
Thierry Le 2 août 2021 11:27:38 GMT+02:00, Dr Rainer Woitok <[email protected]> a écrit : >Ralph and Others, > >On Wednesday, 2021-06-30 12:07:49 +0200, I myself wrote: > >> Ralph, >> >> On Wednesday, 2021-05-19 18:21:57 -0700, you wrote: >> >> > ... >> > On 2021-05-19 8:46 a.m., Dr Rainer Woitok wrote: >> > > ... >> > > - The PNG file from the flatbed clearly showed the original paper hav- >> > > ing been rather thin, since some colours from the reverse side shone >> > > slightly through, and the background colour having been faintly grey >> > > rather than white. In other words, this PNG file was a fairly good >> > > copy of the original. >> > > >> > > - But the PNG file from the ADF did show almost no shine through and a >> > > more or less purely white background. Dark colours appeared slight- >> > > ly darker and light colours slightly lighter than the original. The >> > > effect was somewhat similar to using ImageMagick's "-normalize" opt- >> > > ion. >> > > ... >> > Some of the pixma devices seems to have a completely different engine >> > for generating scans from the ADF compared to the flatbed. >> > For ADF, they return JPEG data to SANE instead of the normal raster data >> > that we get from flatbed. >> > I have no idea why that would be the case but they do use the same sensors. >> >> I have meanwhile opened a support case with Canon complaining about the >> low quality of ADF scans. In their response Canon pointed out that ADF >> (at least normally) is optimized for speed rather than quality and sugg- >> ested testing with "IJ Scan Utility" using the various settings of the >> "Advanced Mode" provided by "ScanGear". So I reanimated my old Windows >> Vista laptop, installed "IJ Scan Utility" from the Canon CD and started >> it. >> >> I selected "Document (ADF Simplex)", "A4", and "Color" in the input and >> "300 dpi" in the output section, and under "Image Settings" I left "Im- >> age Adjustment" at "Document" and set "Unsharp Mask" and "Descreen" to >> "OFF" and "Reduce Dust and Scratches" and "Grain Corretcion" to "None". >> Hitting "Scan" I eventually obtained file "ScanGear-ADF-Doc.png". >> >> In the second run I just changed "Image Adjustment" to "None" (the only >> alternative offered) and scanned to file "ScanGear-ADF-None.png". >> >> Finally, I changed the Source to "Platen" which forced "Paper Size" to >> "Full Platen" and "Image Adjustment" to "None" (greying both out), and >> received file "ScanGear-Flatbed.png". >> >> Here are the file sizes: >> >> $ ls -l ScanGear-* >> -rwx------ 1 rainer rainer 3324661 2021-06-29 15:48 ScanGear-ADF-Doc.png >> -rwx------ 1 rainer rainer 11142577 2021-06-29 15:49 ScanGear-ADF-None.png >> -rwx------ 1 rainer rainer 15357308 2021-06-29 15:49 ScanGear-Flatbed.png >> $ >> >> Files "ScanGear-ADF-Doc.png" and "ScanGear-Flatbed.png" are similar in >> size and quality to the files I originally obtained using "scanimage" on >> Linux, while the quality of file "ScanGear-ADF-None.png" is comparable >> to that of "ScanGear-Flatbed.png". So setting "Image Adjustment" to >> "None" in the "ScanGear" GUI does produce a decent ADF scan on the MB- >> 5150. Now we "just" need to get the same result from the "pixma"back- >> end ... >> >> By the way: On their web site at >> >> >> https://www.canon-europe.com/support/consumer_products/products/fax__multifunctionals/inkjet/maxify_mb_series/maxify_mb5150.html?type=drivers&language=en&os=linux%20(64-bit) >> >> Canon is offering the source code for both, an IJ Printer Driver version >> 5.40 and ScanGear MP version 3.40, of which the former is even available >> as Gentoo package "net-print/cnijfilter2" version 5.90. Would these be >> of any help? >> >> Sincerely, >> Rainer > >However, up to now I never received an answer. Did I just miss it or is >there really nothing to be done to make _scanner access now easy_ for >the Canon Maxify MB5150? > >Sincerely, > Rainer > -- Envoyé de mon appareil Android avec Courriel K-9 Mail. Veuillez excuser ma brièveté.
