[sane-devel] support scanner

[Bertrik Sikken]

Eduardo Gargiulo wrote:
> i've an HP DeskJet 3400c scanner, and i want to know if it is possible
> to use it under linux/sane. It's not in the list of supported scanners,
> but may be someone in this list knows more about it.

The HP ScanJet 3400 is very similar to the HP ScanJet 3300, which I
am working on, see
http://sourceforge.net/projects/hp3300backend/
and
http://home.zonnet.nl/bertrik/hp3300c/hp3300c.htm

They both contain a controller chip with 'niash000xx' printed on it.
Unfortunately, they are not completely compatible. There is partial
support for the hp3400 in the hp3300 backend, however resolution of
the scan is fixed at 300 dpi, the vertical scanning position can
not be changed and color calibration does not work reliably.

The current level of hp3400 support was done by examining hp3400
USB logs, then making some changes to the code and have someone
with a hp3400 try it out. This is a very tedious process.
A developer with a HP4300 (which is almost identical to the
hp3400) has just joined the project, so this should speed up
HP3400 development considerably.

HP has not released any specifications for the niash chip yet,
although I know they have some plans to open-source their drivers.

Kind regards,
Bertrik Sikken