# Re: Mustek 1200SP: Missing Lines

David Mosberger-Tang (David.Mosberger@acm.org)
Sun, 2 Nov 1997 12:03:27 -0800

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>>>>> On Sun, 2 Nov 1997 20:15:42 +0100 (MET), Stefan Luettringhaus-Kappel <stefan@uran.informatik.uni-bonn.de> said:

Stefan> To repeat myself: with 301 dpi or more my
Stefan> scanner is _much_ slower than with 300 dpi and below, making
Stefan> more noise.

This is normal. My scanner does the same thing. I assume they
operate the stepper motor in a different mode to get the additional y
resolution.

Stefan> The carriage also seems to backtrack at scsi transfer
Stefan> boundaries.

That's normal too. Mustek told me at one point it's impossible to
avoid backtracking when the scsi buffer fills up. I'm not sure I
believe that completely anymore since we were able to get rid of the
backtracing in lineart & gray mode. But for color mode, there is
indeed no solution other than using a huge scsi buffer (at least as
far as we know).

--david

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