Color Variation

Discussion in 'Komori Printing Presses' started by Richie, Apr 20, 2018.

  1. Richie

    Richie Member

    Joined:
    Feb 2010
    Messages:
    51
    Location:
    south africa
    Hie Guys
    I've been struggling with this job for sometime now. It's a grey job color values as follows. Cyan-60, Magenta-50, Yellow-46 & Black 39. I print it on paper size 701mmx1020mm and the color won't match from grip to tail on the same sheet. See attached where I'm holding the paper and the other part different. Close to my hand its has a more magenta and the other part showing less magenta. How do I get this right?
     

    Attached Files:

  2. mantman

    mantman Senior Member

    Joined:
    Nov 2015
    Messages:
    114
    Location:
    Greece
    Chromatic grey is a strict *****! You need to have perfect register WITHOUT any variations from sheet to sheet, your rollers must be in good shape and striped correctly, blankets and packing correct. You could avoid all this fuss with gray color removal -convert cmy to k with appropriate tint-
     
    hello.vijay78 likes this.
  3. turbotom1052

    turbotom1052 Senior Member

    Joined:
    Oct 2008
    Messages:
    604
    Location:
    Vermont
    I would try to arrive at the grey tint with less of the 3 colors and more of the black.
     
  4. hello.vijay78

    hello.vijay78 Member

    Joined:
    Apr 2011
    Messages:
    18
    Location:
    india
    I think some problem with the grippers. do you seen any kind of doubling in that area?
     
  5. 3rd Shifter

    3rd Shifter Member

    Joined:
    Feb 2013
    Messages:
    17
    Location:
    San Antonio, Texas
    I agree with turbotom. Maybe consider running integrated, or adjusting inker timing. Depending on press of course.
     

  6. jwe

    jwe New Member

    Joined:
    Jul 2018
    Messages:
    4
    Location:
    canada
    I Imagine theres a slight slur of dot on tail edge of sheet.
     
Loading...

Share This Page