Re: Grainy Laser Profiles
Re: Grainy Laser Profiles
- Subject: Re: Grainy Laser Profiles
- From: Karsten Krüger <email@hidden>
- Date: Tue, 27 Jun 2006 14:53:44 +0200
Am 27.06.2006 um 14:21 schrieb Graeme Gill:
It may well be that such technology is sometimes better, but I've
got to say that none of the transfer belt technology engines has
impressed me that much in terms of printing quality. When in good
shape, the very best prints I've seen have been out of direct
transfer engines, ie. the Canon 1180 and Xerox 1250, which we used
extensively for proofing.
The 1250 uses a transfer belt.
And I've never been impressed with the numbers game race to
"higher" resolution.
400 DPI "photo" contone gave excellent, low noise prints. The
replacement 600 DPI
machines all had noticeable screening artefacts, and seemed more
subject
to noise artefacts, while consuming 2.25 times the memory and
bandwidth.
I'm not going to race for dpi, and 600dpi is well below anything
usable for dot screening.
Your 1250 uses 600dpi, your 1180 400x800dpi. Both look good with line
screening.
Compared to their predecessors (CLC700/800/900 and Xerox 57xx) there
is a huge advance in print quality.
If you use a Splash server on your 1250, did you try dot screening
(hidden feature in G620 & 630, open feature in G640) ?
Memory and bandwidth issues are between rip and printer and should be
transparent to everybody.
With line raster less CMY and more K usually gives better
results. With dot raster at least the printers I know (high end
Xerox) behave allmost like an offset press - any real world
(=offset) GCR/UCR settings will work fine.
When it's in good condition, yes. But run a few thousand prints, and
you're black channel won't be looking so clean.
120.000 prints on a DC250 without service. Linearisation about every
3 days and no problems with black chanel or color so far.
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