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Question uneven prints with vertical banding on Roland RF 640

Discussion in 'Digital Printing' started by gansel, Oct 12, 2018.

  1. gansel

    gansel New Member

    7
    0
    1
    Sep 23, 2015
    Germany
    Hi there, i have a difficult job that drives me crazy :). Have to print big gray squares with some white parts, but after printing about 1m, the printer starts to print the gray surface uneven. I made some tests with prints and found out, that a clean CYAN-Square ist printed uneven too. Ist starts ok, then it would be darker - looks like an color gradient. After heavy cleaning it looks better but when start printing the signs it comes back: uneven grays with irregular horizontal banding. Anybody there with some experience in this error?

    P.S. Someone out there with a service manual for the RF 640?
     
  2. mikesign

    mikesign New Member

    Change your profile. Might be printing to fast.
     
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