27 Nov
2019
27 Nov
'19
12:21 p.m.
On Wed, 27 Nov 2019, Paul Koning wrote:
You both are right, and I had to make the proper settings for getting
clean b/w TIFF files without noise in black parts, but it is possible. And
the bilevel TIFF files generated are G4 compressed.
Christian
On Nov 27,
2019, at 2:56 PM, Jason T via cctalk <cctalk at classiccmp.org> wrote:
On Wed, Nov 27, 2019 at 10:12 AM Christian Corti via cctalk
<cctalk at classiccmp.org> wrote:
Another problem with bilevel scans is that, on some machines at least,
they can be very noisy. That's what I saw on the copier/scanner at the
office. For good scans I use gray scale scanning, with post-processing
if desired to convert to clean bilevel data, without all the noise.
Not only does it make looking at the material more pleasant, but it also
makes the files much smaller -- noise doesn't compress well. My recommendation: use a proper multi-function
copier (the big copiers)
that can also scan to network. I currently use our big Konica-Minolta
bizhub 754. Although it'a b/w copier, it can also scan in color. This
These are great for cranking through big stacks of paper, but watch
out for the presets. Some (like the older Xerox I used to use at
work) would scan to "TIFF"...which was really a JPG-compressed image
in a TIFF wrapper. So even my 600dpi bilevel scans would have
compression artifacts.