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« on: August 13, 2025, 10:24:12 PM » |
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https://www.ddisoftware.com/qimage-u2026.102 Aug 13, 2025 Priority: High v2026.102 fixes a 2026 edition bug related to some black and white (grayscale) images not printing properly. Mike
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StephenG
Newbie
Posts: 24
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« Reply #1 on: August 18, 2025, 07:08:15 AM » |
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Hi Mike, I've noticed a processing issue with the latest versions. Pretty sure it started with the first 2026 version, and it goes away when I revert to 2025.105.
Pure white image, 255,255,255, is being processed to a very light green tone. Only just visible in print preview and on print, but it's there.
See attached screengrabs from my Print Preview, one of them I boosted with a levels layer to show the issue more clearly.
There's a pure white border from image to corner marks, which does not have the green tone.
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admin
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« Reply #2 on: August 18, 2025, 11:32:34 AM » |
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Could you put the image on google drive and post a link? I'd also need to know what printer, media type, and printer profile you are using in Qimage. This looks like a profile issue but I'd have to have those things to check it out.
Regards,
Mike
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StephenG
Newbie
Posts: 24
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« Reply #3 on: August 18, 2025, 12:49:08 PM » |
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I can't share the image(s) I'm printing. Just test with any image with a white background. Most of my print output files are in ProPhotoRGB
Epson P9000 and P9500 - the issue presents on both machines
I'm using a range of papers, with custom profiles that have given me no issues for years.
The issue is not present in 2025.105 and earlier, but shows up in 2026 versions without any changes to settings, media and profiles. I can print from 2025.105 without problems, then save the job. Then I install any 2026 version and recall the job. I print and the issue shows up in the print preview.
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StephenG
Newbie
Posts: 24
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« Reply #4 on: August 18, 2025, 01:02:08 PM » |
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after a few tests, some additional info:
changing printer output profile has no effect, issue remains
changing image colour profile has no effect, issue remains
printing to file, output to sRGB: issue remains
turning sharpening on and off has no effect, issue remains
changing interpolation method has no effect, issue remains
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admin
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« Reply #5 on: August 18, 2025, 03:03:10 PM » |
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I really only need to know the image profile was Prophoto. I do see something that might need a slight tweak to force LCMS to do higher precision color conversions (full precision vs high precision). White seems to end up at 254,255,254 in some cases when using the faster "high precision" method. That might be what is causing a tiny color cast in white. Surprised you can even see a 1 RGB change near white but I suppose depending on the printer profile it could cause the printer to put a tiny amount of ink on the paper. I'll release a 2026.103 and we'll see if that fixes it.
Regards,
Mike
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admin
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« Reply #6 on: August 18, 2025, 08:47:12 PM » |
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OK. Fixed in 2026.103.
Regards,
Mike
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StephenG
Newbie
Posts: 24
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« Reply #7 on: August 22, 2025, 11:43:04 AM » |
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Thank you Mike. sorry for not coming back and saying it sooner
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