Hi csola48,

csol...@gmail.com writes:

> Why is the lineart option not supported in the sane 1.0.31 backend version?

Probably because of commit a12083c8c44b7296fa98ecb83e8932d0f6bdeb05.

  
https://gitlab.com/sane-project/backends/-/commit/a12083c8c44b7296fa98ecb83e8932d0f6bdeb05

@povilas> The commit message doesn't really explain why though ...

> Typed texts, black and white forms can only be scanned with a gray background!
>
> (Ubuntu 18.04.5 / Canon LIDE 220)
>
> csola48

Hope this helps,
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