Lov level scanner driver is required, gt68xx ie. > 1. the optical package of each scanner cannot be placed end-to-end and > get a complete scan, because there is some dead space for packaging or > mechanism on the ends. so now you have to stagger them, and then have > a staggered calibration strip. correcting skew and adjusting height > will be excercises in very precise machining. Scan heads packagins can ovelap themselves, there will be no dead space, with constant y offset, it will be easy to produce image. ---------=====- (head1) -----=====----- (head2) -=====--------- (head3)
> 3. you will have to have a much larger motor, or convince the series > of motors to move at EXACTLY the same rate, or some of them will be > dead weight (very difficult to do if they have independent > controllers) There is easy way: connect one controler to all motors (split signal) (each head will have own motor) in one cycle all scanning all heads go 1 step, then colect data from all scanning heads, then make next step.... with dualcore or quadcore CPU collect all data will not be a problem, (conect heads to all usb ports avaible, not to one potr or hub) USB1.1 max transfer is 12 Mbit/s (1.5 MB/s) so i.e. 10 heads can make max transfer about 120Mbit (15MB/s) this is no problem download it and save to disk(s) Regs, LLG -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.alioth.debian.org/pipermail/sane-devel/attachments/20080723/7a79eeba/attachment.htm
