Re: Profilable Xerox color photocopier
Re: Profilable Xerox color photocopier
- Subject: Re: Profilable Xerox color photocopier
- From: Klaus Karcher <email@hidden>
- Date: Sun, 27 Jan 2008 18:39:38 +0100
Scott Martin wrote:
The DC12 is, of course, an ancient machine. As for variations across
the sheet I like to print solid C, M, Y, K and combined CMYK 11x17
pages to check for consistency and these machines has always
outperformed the others I've tested. Naturally the consistency across
the page doesn't approach inkjet. It is all relative. But if one
must have laser Xerox has a far better track record for such things.
Sorry to hear of your problems with the DC240 but they do sound
isolated and counter to the norm.
I have a test page with critical gray- skin- blue- and pastel colors. I
used to raise an alarm whenever the DE00 across the sheet exceeded 3 for
one of these colors on the DC12. We changed the contemplable parts and
when it was no use we called a technician.
With the DC240 the DE00 is > 3 most of the time. I measured DEs above 7
immediately after the technician did whatever he could do.
Karsten Krüger wrote:
It is, like allways, a matter of wisdom to judge a print under D50
light.
beyond question for proofs -- but I can't require the customer to view
his leaflets, invitation cards or brochures only under D50 ;-)
Karsten Krüger wrote:
Changing a drum on a DC240 in normal ilumination might produce
banding due to light exposure of all drums. Changing drums in a
dimmed light condition solves most of the color variation on a sheet.
This may be an important advice as the room has no blackout curtains or
shutters. I'll keep an eye on it.
Graeme Gill wrote:
If things are much as they were when I was last involved, the
variation across the sheet depends greatly on how the copier is
adjusted. A specially trained copier tech. will know how to adjust
the printing engine to minimize this issue.
I think in the meantime I know /every/ Xerox technician in North Germany
;-) It should not be expected that /none/ of them is trained well enough.
Thanks to all for your advices,
Klaus
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