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Author Topic: Color under saturated after Qimage update  (Read 7237 times)
Justan
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« on: November 19, 2010, 02:45:50 PM »



I've used Qimage for about 2 years. I recently updated to the v1010.208 version of Qimage. After the update the color balance has become, in a word, wonky. I've re-calibrated and re-profiled the printer, A Z3100. The test pages come out fine, but at best prints made with Qimage come out under saturated and on average the prints are mostly de saturated. Any suggestions on troubleshooting this?

Thanks,

Justan
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Fred A
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« Reply #1 on: November 19, 2010, 03:41:41 PM »

Quote
in a word, wonky. I've re-calibrated and re-profiled the printer, A Z3100. The test pages come out fine, but at best prints made with Qimage come out under saturated and on average the prints are mostly de saturated. Any suggestions on troubleshooting this?

Justan,
Assuming that the images are not under saturated, (perhaps you printed one using a different application) ,
The suggestion that seems to work for all anomalies using this series of printers is to click HELP in Qimage, and then RESET PRINTER.
After that, manually reset the quality, paper selection and whatever you had set before the undersaturation showed up.

If you are comparing the prints to an over aggressive monitor screen, that may be the problem, and the prints are fine.

You have to make some tests and comparisons.
Also need to verify the update?   The latest is 2010.209..

Do you have any global filters turned on that might reduce saturation on all the prints?
Apparently, you are seeing the undersaturation on *all* the prints.
Look at the main screen and see if there is a check in Global Filter or Print Filter.

A place to start.

Fred
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Justan
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« Reply #2 on: November 20, 2010, 03:05:44 PM »

Hi Fred,

First thank you very much for such a detailed response!

Second, I appear to have been off the mark in my thinking. The timing for the color problems the printer is experiencing appears to have been coincidental with the timing of my recently installed Qimage update.

Based on your suggestion I found that printing from PS produces much the same results. As a further test I tried a different paper and used the HP provided tools to calibrate and profile the paper. This test HP produced far worse results than this test was performed using Hahnemuhle paper, a couple of days ago.

The ďtestĒ images are all .tif files that are only used for printing finished works. I have a print made from the the same image and paper that i made about 6 months ago. The current test print is a wonky example of a once great image.

I guess the next test is to install the HP print driver and Qimage on my notebook computer, and use this same image and paper. Then when it produces the same results Iíll have a clearer idea of the source of the problemÖ.. which I'm now thinking is the printer itself. Gasp! Shocked
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Fred A
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« Reply #3 on: November 20, 2010, 04:06:31 PM »

Quote
which I'm now thinking is the printer itself. Gasp

Justan,
HP drivers have a legacy of weird problems. Please use Qimage, go to HELP, and RESET PRINTER.
Then put the settings back in manually, and try a print.

Fred
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ronzie
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« Reply #4 on: November 22, 2010, 06:29:02 AM »

On updating QImage it is a good idea to reset all options (from the help dropdown) and then reenter all of your preferences again including the default color profiles for your monitor and printer (for your paper and ink type that you created) you wish to use. If you have QImage Pro or better, look at the soft proof on your monitor as well to compare it with the print.

On the lower right of the screen mouse over the Job Properties line and it will display the color profiles that are current for the monitor and printer.

http://www.northlight-images.co.uk/downloadable_1/DL_page.html

has a number of test targets you can download. I suggest the one with the four models in the bottom row and the gray scale on the right. Unzip it into a test folder, edit it just to resize it as you wish (I do 4x6) without any other adjustments and save it. Now you can load it into QImage to test its printing quality. It is also a decent target to check your display quality.

http://www.sns.ias.edu/~jns/files/Canon_ICC_Profile_Guide.pdf is a guide for Win and Mac users on setting up Canon printer drivers but the ideas can apply to other drivers as well.

Make sure you are not double profiling. If you have the ICC profile being used in QImage insure that it is not being used in the printer driver by setting any icm to off and color management to none. All you need to set is page setup and paper type in the driver. Any color sliders should be set to neutral.

« Last Edit: November 22, 2010, 06:37:54 AM by ronzie » Logged
Justan
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« Reply #5 on: November 23, 2010, 05:26:50 PM »

Quote
which I'm now thinking is the printer itself. Gasp

Justan,
HP drivers have a legacy of weird problems. Please use Qimage, go to HELP, and RESET PRINTER.
Then put the settings back in manually, and try a print.

Fred

Thanks one again. I tried that and it made no difference. I ultimately blew off the install of Qimage and installed an older copy. That too, made no difference. I'm not surprised as i already ruled out Qimage as the source of this probelm. I think i noted it above when i did some prints straight from PS.

But what i'm finding is that the printer seems to be slooowly recovering from this malady. Over a period of half a dozen tests the color levels have started to come back to their previous levels. I plan to re-calabrate the monitor in the next few days and see if that helps.



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Justan
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« Reply #6 on: November 23, 2010, 05:45:59 PM »

On updating QImage it is a good idea to reset all options (from the help dropdown) and then reenter all of your preferences again including the default color profiles for your monitor and printer (for your paper and ink type that you created) you wish to use. If you have QImage Pro or better, look at the soft proof on your monitor as well to compare it with the print.

On the lower right of the screen mouse over the Job Properties line and it will display the color profiles that are current for the monitor and printer.

http://www.northlight-images.co.uk/downloadable_1/DL_page.html

has a number of test targets you can download. I suggest the one with the four models in the bottom row and the gray scale on the right. Unzip it into a test folder, edit it just to resize it as you wish (I do 4x6) without any other adjustments and save it. Now you can load it into QImage to test its printing quality. It is also a decent target to check your display quality.

http://www.sns.ias.edu/~jns/files/Canon_ICC_Profile_Guide.pdf is a guide for Win and Mac users on setting up Canon printer drivers but the ideas can apply to other drivers as well.

Make sure you are not double profiling. If you have the ICC profile being used in QImage insure that it is not being used in the printer driver by setting any icm to off and color management to none. All you need to set is page setup and paper type in the driver. Any color sliders should be set to neutral.


Thank you for this excellent guide! To this point I've used Qimage exclusively to size and print and have always gotten great results. I checked and the profiles are appropriate. The monitor profile is consistent with the one used in PS and reflects the most recent calibration. The printer profile is set to let the printer manage colors.

Iíll definitely try some of the test prints.

I'm mystified as how the same tif file printed on the same paper only a few months apart can produce such drastically different results. Anyway the issue appears to be healing itself. If we hadnít gotten a quarter inch of ice and then 4 inches of snow Iíd go to get the colorimeter but the roadways look as if countless people simply abandoned their cars everywhere.
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