It applies to the HP3200C scanjet, since it is only a rebadged Umax scanner. It also operates Astra 2000P and 1600P. First tests on 610P show that this scanner doesn't use the same communication layer.
Work is in progress to check if the protocol layer is the same.
Only the probing function has been updated. Its origin is an experimental test program that has turned into a scanning program, and then was wrapped into a SANE backend. But it is only usefull on plateforms where you have a parallel port and direct access to it. Work left is code cleaning, and bug fixing. This backend detects 610P, 1220P, 1600P and 2000P models.