[sane-devel] [sane-pixma] Canon MF4150 v. PIXMA_CAP_LINEART
adam at certifound.com
Tue Aug 20 13:36:18 UTC 2013
I know experientially that the Canon imageCLASS MF4150 is possessed of
a 1-bpp lineart mode. Pages fly through the automatic feeder, and text
is accorded an OCR-friendly crispiness lacking in the greyscale mode.
The Canon-provided Windows-only software provides two modes it
respectively terms "Black and White" (not too good) and "Black and White
Text" (much better). I do not currently have a Windows machine
available, and I need to make some scans *yesterday*.
sane-pixma permits only --mode Color or --mode Gray with the MF4150,
and `scanimage -A` shows only these options.
What would happen if I simply ORed in PIXMA_CAP_LINEART at the
appropriate line in pixma_imageclass.c?
- DEV ("Canon imageCLASS MF4150", "MF4100", MF4100_PID, 600, 640,
+ DEV ("Canon imageCLASS MF4150", "MF4100", MF4100_PID, 600, 640,
877, PIXMA_CAP_ADF | PIXMA_CAP_LINEART),
I expect this would lead to Bad Things, what with all the moving parts
I skimmed past. But is any other way to make it work right quickly?
Sorry to return ENOTIME on the project to actually familiarize myself
with sane-pixma code, beyond a simple grep. And thanks to the folks who
reverse-engineered the Canon protocols, so I can use scanner at all.
 The idiot-friendly software has a checkbox captioned "Show Scanner
Driver". Check it, and options galore do arise.
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