RE: Need Xerox Tektronix Phaser 7700 ICC Profile - Transparency
RE: Need Xerox Tektronix Phaser 7700 ICC Profile - Transparency
- Subject: RE: Need Xerox Tektronix Phaser 7700 ICC Profile - Transparency
- From: "Adams, Charles A" <email@hidden>
- Date: Fri, 14 Jun 2002 16:45:02 -0700
We here at Office Printing Business Unit within Xerox have looked into the
technical issues surrounding ICC Profiles for OHP. We have technical
personal that have done work in the area of characterization of OHP and
measuring OHP. So far no one that we know of has found a way to reduce the
errors in this process significantly enough that would allow us to produce
ICC profiles for OHP with any confidence that they would meet users
expectations.
The problems that we see in this process are:
* a transmission spectrophotometer does not really represent the color
when projected
* the color of projector bulbs vary greatly! If you use a standard
projector and a high quality screen (to reduce luminance fall-off from
center to edges), then they should measure color patches with a
spectroradiometer (i.e. as projected on a screen)
* The proposal to measure the transmission is a reasonable
simplification yet everyone should realize that there are inherent errors
with this method, i.e. color shift upon projection. If reasonable accuracy
is expected it may be you would need several profiles based on the
projectors being used.
So we are not sure that spectral measurements are really needed and ICC
profiles are accurate enough to be used in a real production environment. We
would love to hear if some one has information on how the ICC profiles
should be generated or if they are ever used in the field and if so how they
are used.
Chuck Adams
Common Software Team
Office Printing Business
Xerox Corporation
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-----Original Message-----
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Date: Tue, 11 Jun 2002 12:00:00 -0400
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From: "Kelly, Kristen E" <email@hidden>
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Subject: Need Xerox Tektronix Phaser 7700 ICC Profile - Transparency
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To: "'email@hidden'"
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<email@hidden>
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Hi All,
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I am in need of a generic profile for the Xerox Tektronix Phaser 7700
color
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laser printer for transparency media. I do not have a transmission
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spectrophotometer so can not create the profile myself and one is not
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available through Xerox.
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I would also be interested in information on a good transmission
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spectrophotometer. I am currently using the ICColor and Eye One Monitor
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hardware from GretagMacbeth.
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Can anyone help?
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-Kris Kelly
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