I joined this list find out how to get my ancient, and no longer supported, Nikon Scantouch 110 (AX-110) working with sane. But, I think I've got it figured out. Apparently the umax backend works for the AX-210, and will also work for the AX-110 if you rebuild it after adding entries to some files.
to the umax.conf file: ... scsi HDM LS4H1S scsi Nikon AX-210 scsi Nikon AX-110 <--- scsi KYE ColorPage-HR5 ... to the umax.desc file: ... :mfg "Nikon" :url "http://www.nikon.com/" :model "AX-110" <--- :interface "SCSI" <--- :comment "OK" <--- :model "AX-210" :interface "SCSI" :comment "OK" ... and to the umax-scanner.c file: ... "HDM ", "LS4H1S ", /* Linoscan 1400 */ "Nikon ", "AX-110 ", <--- "Nikon ", "AX-210 ", "KYE ", "ColorPage-HR5 ", "EPSON ", "Perfection600 ", ... (Naturally, don't put in the "<---" arrows as they're just to show what lines I added). After rebuilding, I copied all the new umax libraries to "/usr/lib/sane" and the umax.conf file to the "/etc/sane.d" directory. I'm no expert on sane, and if anyone can see any dangers or flaws in what I did, please let me know. In the meantime, I seem to be getting reasonable quality 300 dpi scans via xsane. FYI, I'm running sane version 1.0.5 and have RedHat 7.2 installed on my computer. The scanner came with a dinky little Adaptec AHA-1505 ISA scsi board that I could never get to work right on Linux, so I'm now using an Adaptec AHA-2940AU pci card, which also handles my internal zip drive and whatever else I decide to hang onto the scsi bus. Tim