[sane-devel] New release of the alpha version of hp5400 SANE backend

[Bertrik Sikken]

Martijn van Oosterhout wrote:
> On Wed, Mar 05, 2003 at 10:57:33AM +0100, Henning Meier-Geinitz wrote:
>>On Wed, Mar 05, 2003 at 11:43:03AM +1100, Martijn van Oosterhout wrote:

<snip>

>>However, this is a 1200*2400 dpi scanner. Probably 600*2 dpi is
>>cheaper than 1200 dpi CCDs. However 600 dpi CCDs are pretty common so
>>I'm surprised that there are 300*2 CCDs.
> 
> 
> It says on the box it has 2400x2400dpi hardware resolution. Stepping the
> motor increases your y resolution but I'm not sure how to increase the x.
> Examining the data from the scanner reveals it's still sending three scan
> lines (one for R,G and B) but each line consists of (for this scan at least):
> 
> 0x5F0 bytes of normal data
> 0x50 bytes of zeros
> 0x1DC2 bytes of what can only be described as rubbish
> 
> Probably something wrong with the setup. Need to do a scan in windows. Maybe
> later this week.

So you're getting more rubbish than actual image data?

 From the code I see that command 0x1500 always writes 300,
perhaps this needs to be changed to the same DPI value written
with command 0x2505?

Regards,
Bertrik