[sane-devel] Re: Need recomendation linux/sane compat scanner w/fast 2bit/greyscale ADF

m. allan noah anoah@pfeiffer.edu
Thu, 21 Apr 2005 13:43:37 -0400 (EDT)

the scanner speed on the 4120C was limited by the speed of the bus. to be 
honest, i only go up to 200dpi, so i have not tested the speed of the 
4120C2 at higher resolutions. i really dont have time this week. i will 
add it to my long list of things to do, perhaps early next week?


On Wed, 20 Apr 2005, Jeff Kowalczyk wrote:

> m. allan noah wrote:
>> i only know fujitsu models, so i am sure there are others, but the
>> fi-4120C2 is pretty fast, and the sane support is ok for binary and
>> grayscale.
> Thanks for the reply. The fujitsu models were my leading candidates.
> Thanks for your work on the SANE support for these.
> The fi-4120c2 is particularly attractive due to the USB 2.0 interface.
> I'll be using this unit with my laptop from time to time, and prefer to
> connect it to both the server and laptop with USB 2.0
> Question: Does the fi-4120c2 take advantage of its 600dpi optical
> resolution to scan 300dpi (and perhaps even 600dpi) at the full 25ppm
> speed? The data sheets only list comparison specs of 150dpi and 200dpi at
> 25ppm, there's no mention of the higher resolutions' effective speed.
>> the usb issues seem more linux kernel dependent than sane. 2.4 with
>> libusb has worked better than the early 2.6 kernels, but the recent
>> 2.6.10+ seems to be fine (finally, some 'stable' series this is :)
> I currently run Gentoo Linux with a kernel of 2.6.11, libusb-0.1.10a,
> udev-056 and HAL. So I should be alright to use the USB greyscale/1bit ADF
> combination?
> Thanks.

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