Hello Juergen, I don't have a solution. But I can tell what's going on. The scan speed of the scanner can not be reduced any more. The speed mode "slow" gives the same speed as "auto" and "normal". Above about 200 dpi the scanner generates more data than USB can transfer to the computer. Thus the scanner must stop, move the carriage back and restart scanning. Thus per move only a small strip can be scanned.
I would like to know what other scanners (Epson, Miicrotek,...) are doing when scanning over USB ? Can they reduce their scan speed to avoid stopping the carriage ? BTW: I don't have problems with preview scan in xsane 0.81. It scans continuously from top to bottom. --Peter Juergen Sauer wrote: > > Am Freitag, 23. November 2001 00:19 schrieben Sie: > > option enable-image-buffering > > Somewhat thing was what I'm looking for. > > It is not nessessary to have the same Device-Bandwith to the ram as with > SCSI. Scanning time is not important. My topic is more to save the > scanner's mechanical lifietime. > > But this did not helped here. > During preview scan xsane .81+ sane 1.06 I recognize a ugly misbehavior: > the scanner moves forward-stop-little backward-stop- etc. instead of > moving counitnuesly until buffer full - stop transfer - go on. > > This behavior sounds like a cruel mechanical torture - HP's hardware > quality is not the same as for a few years, this way the scanner will > probably break soon. > > Any idea what's going on there - any idea ? > > mfG > Jojo > > -- > Jürgen Sauer - AutomatiX GmbH, +49-4209-4699, [email protected] ** > ** Das Linux Systemhaus - Service - Support - Server - Lösungen ** > http://www.automatix.de to Mail me: remove: -not-for-spawm- ** -- Peter Kirchgessner http://www.kirchgessner.net mailto:[email protected] (alternate e-mail: [email protected])
