Re: X-Rite PhaserMatch Calibrations
Re: X-Rite PhaserMatch Calibrations
- Subject: Re: X-Rite PhaserMatch Calibrations
- From: Karsten Krüger <email@hidden>
- Date: Thu, 26 Nov 2009 03:19:20 +0100
Joseph,
All those 140 patches are doing is a linearization...
PhaserMatch 4.0 does:
- linearize your Phaser
- create device link profiles for your Phaser
- download device link profiles your Phaser
- edit & optimize your device link profiles
PhaserMatch 4.0 does not create regular ICC profiles
Here is how to profile your Phaser 77xx:
- linearize your Phaser 77xx with your measurement device in PhaserMatch
- create an ICC profile of your printer on your paper using any
profiling software you like (basICColor, PM, Monaco etc.)
- select your simulation profile (ISOcoated, SWAP, GRAcol etc)
- create a device link profile using your printer and simulation
profile using PhaserMatch
- download this device link profile to your Phaser using PhaserMatch
- optimize this device link profile using PhaserMatch if necessary
You need to create a device link profile for each simulation / paper
combination
Hope this helps,
Karsten
Am 26.11.2009 um 02:28 schrieb Joseph Yates:
I have a couple queries for the list that I need assistance with...
First –
We have a couple of Xerox Phaser 7760 laser printers that we
calibrate with
PhaserMatch 4.0 (from X-Rite).
PhaserMatch has one measure a 140 Patch target with a spectro (we
use a
EyeOne revD) and then sends the measured calibration data to the
printer.
PhaserMatch also allows one to “Export” the measurement data (as
CIElab
values) – as well as “Average” several measurements before sending
this
calibration data to the printer.
I’m trying to determine how well this calibration “works” - by
measuring a
2nd target after a calibration is sent to the printer – and
comparing the
CIElab values against the reference values...
So therein lies my problem – trying to determine what these expected
CIElab
values are.
PhaserMatch – during the measurement process actually displays on
screen the
actual Lab values – but only a picture representation of the expect
value.
Both Xerox and X-Rite have been not been of any assistance in
helping me
find these reference values for the 140 patch target.
I’ve search through the application support folder and could only
find the
TIF CMYK target – which as a last resort I suppose I could extract
the Lab
values from – but as Photoshop only indicates whole numbers of Lab
values as
opposed to the 4 decimal points of the exported PhaserMatch Lab
values – I
was searching for something more exact.
Can anyone suggest how I might find these reference CIElab values
for this
140 Patch CMYK target?
Second-
Once I have these reference values – and the exported PhaserMatch
values –
I’d like to compare the DeltaE differences between the two sets of
values.
I’ve searched around and found some sites that show what the formula
is –
but this is way beyond me – and so am asking if some generous member
of the
list had a pre-existing Excel sheet that I could plug these 2 sets
of CIElab
values into. Please contact me off list.
Regards,
Joseph Yates | Pacifica Island Art | Maui, Hawaii
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