Colour Problems


V

vic

Using PSP7 Monitor gamma ok. colour range on screen ok.
Printer checks ok. But printout has an overall red bias.
To compensate I have to distort the colour Gamma on the monitor to match the
print output then readjust the screen colours for the print. Not a good
print .
Have been getting some really good print off this setup.
This is a recent change. Cartridge test seems ok.
Any ideas folks.
Printer Epson 680
 
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E

Ed Ruf

Using PSP7 Monitor gamma ok. colour range on screen ok.
Printer checks ok. But printout has an overall red bias.
To compensate I have to distort the colour Gamma on the monitor to match the
print output then readjust the screen colours for the print. Not a good
print .
Have been getting some really good print off this setup.
This is a recent change. Cartridge test seems ok.
Any ideas folks.
Printer Epson 680

What type of paper? tHat can effect the output. For real color matching
you'll need to calibrate the monitor with something like the Colorvision
Spyder and associated software, then run that monitor profile. In PSP
you'll then need to turn on color management and choose the monitor
profile. Finally, you need the profiles for the individual paper. Then you
can turn proofing on in PSP color management and have the screen image
reflect what the printed one will look like.
________________________________________________________
Ed Ruf Lifetime AMA# 344007 ([email protected])
http://EdwardGRuf.com
 
B

bmoag

A strong pink cast, barring printer failure, is usually a sign that color
management is being applied twice in the printing chain. Having had to work
my way out of this in Photoshop I could help you.I am not familiar with PSP
but you need to look into the appropriate printer settings. Fortunately for
you Epson has the most intuitive settings for color management compared to
Canon or HP printers in their drivers.
 
V

vic

Thank you Ed & bmoag,

Up to this point my prints had been very good. Paper, ink, monitor, gamma
etc.. well matched. Then this struggle starts for no apparent reason. The
colour gamma curves in PSP have to be bent like a bow string to get even a
poor print.
I have not heard of the colour management being applied twice, will look
into that area.
Will keep trying. Thanks Vic

Using PSP7 Monitor gamma ok. colour range on screen ok.
Printer checks ok. But printout has an overall red bias.
To compensate I have to distort the colour Gamma on the monitor to match
the print output then readjust the screen colours for the print. Not a good
print .
Have been getting some really good print off this setup.
This is a recent change. Cartridge test seems ok.
Any ideas folks.
Printer Epson 680
 
E

Ed Ruf

Thank you Ed & bmoag,

Up to this point my prints had been very good. Paper, ink, monitor, gamma
etc.. well matched. Then this struggle starts for no apparent reason. The
colour gamma curves in PSP have to be bent like a bow string to get even a
poor print.
I have not heard of the colour management being applied twice, will look
into that area.
Will keep trying. Thanks Vic

Not sure if the 680 driver even supports color management. On my 1270 you
get to the setting by setting the Mode ( Automatic, PhotoEnhance, Custom)
to Custom, which then brings up an Advanced button. Choosing Advanced then
brings up the dialog containing the color management options, one of which
is ICM.

In PSP, File => Preferences => Color Management check Enable Color
Management. There are then settings for Monitor, Printer and Emulated
Device. If you choose proofing then choose the paper ICM for Emulated
Device Profile and Proofing as the Rendering intent, what you see in PSP
should be what the printed output will be. This does assume you have a
calibrated monitor.

What you don't want to do is enable color management in both PSP and the
driver. That would apply the corrections twice to the print.
________________________________________________________
Ed Ruf Lifetime AMA# 344007 ([email protected])
http://EdwardGRuf.com
 
A

Arthur Entlich

Is this a recent or just occurring problem?

If it happened fairly suddenly, you may have a clogged cyan head, check
with a nozzle test.

If the problem has been recurrent for some time, you may need to make
some changes in your color management. Check which paper and image type
profile you are using in the printer driver. Also, which color space
are you printing in, etc?

Art
 
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A

Arthur Entlich

Now that you mention this is a sudden change, and I'm assuming you have
not changed any driver software for the printer, I suspect one of the
heads is clogged, most likely the cyan. As I recall this is a four
color printer, so the loss of the cyan head should be quite obvious,
although a partial clog may be less so.

Other causes could include a corrupted printer driver, a defective
cartridge, an incorrectly filled cartridge, or change of printer ink
manufacturer, using incorrect paper profile, using wrong color space in
image software, etc.

Art
 
V

vic

Thank you folks.

I always do a nozzle test before printing and I have replaced carts and
re-tested. Always got good pics until recently. Have not gone into the
double correction syndrome yet!!
There is a colour management option but this does not take effect. Will
have another session later and let you know.
Thanks All. Vic
 
E

Ed Ruf

Thank you folks.

I always do a nozzle test before printing and I have replaced carts and
re-tested. Always got good pics until recently. Have not gone into the
double correction syndrome yet!!
There is a colour management option but this does not take effect. Will
have another session later and let you know.

OK. I don't think this is an issue now, since your don't appear to be using
ICM. So step back to basics. The nozzle test only prints each cartridge
color separately to looked for clogs or misalignment of jets. What you need
to check is basic color composition. I have an image composed of RGBWY,
CYMK and K graduated steps I use to check my own printers. If you'd like a
copy contact me by e-mail and I will send it to you. It's am 1800x1200x16M
6+MB tif, but zipped it's ~30KB.

I want to say this may be a symptom of the formatter board in the printer
going bad, but my memory isn't that good. You could try searching google.
Also, I'd recommend completely uninstalling the driver including removing
all the associated files manually following the uninstall, then
reinstalling the driver. I assume there is nothing like an XP upgrade you
haven't mentioned to us?
________________________________________________________
Ed Ruf Lifetime AMA# 344007 ([email protected])
http://EdwardGRuf.com
 
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V

vic

Thanks Ed and others.

Still the same so I am going to reinstall the driver. Will report back
:)

Vic
 

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