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Patches on media light and dark coming

#1 muiez.khan10125 9 months ago

HP 570 Printer Dark and light patches coming on media, what might be the reason for it. Please let me know. waiting for reply.

#2 muiez.khan10125 9 months ago

what can be the problem if we are getting stripes in printing. can any one let me know the reasons.

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#3 HP Daniela Ciolompea 9 months ago

Hi @muiez.khan10125,

If you are seeing stripes in the prints there could be different reasons:

  • if the stripes are lighter or darker in all colors probably there is an issue with the advance; make sure that the advance is correctly calibrated for the substrate you are using and that the OMAS works fine.

  • if there are lighter stripes in just one color the problem could be with the PH for that color; make sure to follow the proper Color Management workflow:

Color Calibration will ensure color consistency within a printer and media after the first calibration is launched when the color reference targets are set based on current printer conditions (temperature, humidity, PH DW, etc).

Regular Workflow for a single printer:

  1. Do a Color Calibration before beginning the job you want to keep consistency. Note the CLC is media-dependent.

  2. Re-do a Color Calibration whenever you see the color change, the calibration is in “Recommended” or “Obsoleted” status.

Tips and tricks:

  • Verify the calibration target is printed with good IQ (no nozzles out, banding, grain, advance is correct, etc).

  • Launch the CLC when the printer is in the same state (e.g. if the machine has been printing for a while the system is hotter than if not, this may impact CLC).

  • Note that in cloned substrates from generic the first time you launch color calibration that color is “saved” and the next time you launch the color calibration you are calibrating it.

Hope this helps.

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#4 muiez.khan10125 9 months ago

Thanks so much.

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The opinions expressed above are the personal opinions of the authors, not of HP.

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