[sane-standard] HP scanjet IIcx /t resolution

[George Georgalis]

Thanks to some help on irc I've got my HP scanjet IIcx /t working.

It's spec says 600 dpi but somewhere between 300 and 400 dpi it starts
to do double passes (exactly when it starts depends on the image). I
think I understand what's happening, though I don't know the
vocabulary to explain it (software gets a higher resolution than the
optical quality requiring multiple passes).

Anyway what I was wondering is:
1) why it would do this double take at anything less than the rated
optical resolution? -- which is 600 dpi
2) why would the image affect at which dpi the double take starts?

I came across this determining the highest dpi I could use to do a
scan quickly, ie no double takes.

// George

-- 
George Georgalis, systems architect, administrator Linux BSD IXOYE
http://galis.org/george/ cell:646-331-2027 mailto:george@galis.org