[sane-devel] Linotype X-ray Scanner

[Steven Lembark]

-- Piernicola Oliva <oliva at df.unipi.it>

> Hi,
> another problem arised...
> Now the images are ok, 12bits deep.
> When the scanner is in standby for more than half an hour (I think) the
> lamp  turns off.
> I made some other acquisitions after this (using the same command and the
> same image) and I noticed a different histogram for the same image (say
> the  mean vaule was 4000 instead of 2500).This difference appears only
> for the  first image acquired after the turning off of the lamp.
> So I waited for another turning off of the lamp and started again a set
> of  acquisition... and the computer freezed completely (also the
> caps-lock light  didn't work) and I had to reset the computer.
> I made this only one time, so I don't know if it happens every time the
> lamp  turns off.
>
> Do I have to say  in some way to the scanner to turn on the lamp?

It may be that you have to issue a bogus scan command the
first time, discard the image and then keep going. If there
is not a "lamp" command that can be grafted into the code I
can hack a perl program that kicks the thing once then turns
over scanning to sane.


--
Steven Lembark                               2930 W. Palmer
Workhorse Computing                       Chicago, IL 60647
                                            +1 800 762 1582