C450 BOLD BLACK TEXT is FUZZY

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  • PCSControls
    Junior Member
    • Sep 2010
    • 9
    #1

    C450 BOLD BLACK TEXT is FUZZY

    BOLD black is fuzzy when I print something. This seems to be only when printing just black not other colors. This started after I replaced all of the IU's. I did the gradation setup after replacement and the colors all look fine. Any ideas on what else to look at or adjust? Thanks
    Tags: None
    • Albonline
      Service Manager

      1,000+ Posts
      • Sep 2008
      • 1135
      #2
      Re: C450 BOLD BLACK TEXT is FUZZY

      Try cleaning the led array with alcohol.

        Comment

        • MFPTech
          Trusted Tech

          250+ Posts
          • Nov 2010
          • 486
          #3
          Re: C450 BOLD BLACK TEXT is FUZZY

          Originally posted by PCSControls
          BOLD black is fuzzy when I print something. This seems to be only when printing just black not other colors. This started after I replaced all of the IU's. I did the gradation setup after replacement and the colors all look fine. Any ideas on what else to look at or adjust? Thanks

          Does it do the same when copying?

            Comment

            • darry1322
              Senior Tech

              Site Contributor
              500+ Posts
              • Oct 2010
              • 817
              #4
              Re: C450 BOLD BLACK TEXT is FUZZY

              I've removed all image units, waste toner box and belt to clean led write heads with a damp cloth from the waste box end of the copier. Sometimes they just need a better cleaning than the wand can give.

                Comment

                • Dickie
                  Trusted Tech

                  100+ Posts
                  • Nov 2011
                  • 190
                  #5
                  Re: C450 BOLD BLACK TEXT is FUZZY

                  I've seen this a few times on individual colours.
                  The print heads are lifted up and down on springs when the lever is opened to allow the I/U to be removed.
                  Sometimes the springs just do not seem to push the head back to the correct position when the lever is closed back up.
                  Just remove the I/U and push the head side to side and down a few times, then refit the I/U. I found this cures it every time I've had this problem

                    Comment

                    • PCSControls
                      Junior Member
                      • Sep 2010
                      • 9
                      #6
                      Re: C450 BOLD BLACK TEXT is FUZZY

                      Originally posted by Dickie
                      I've seen this a few times on individual colours.
                      The print heads are lifted up and down on springs when the lever is opened to allow the I/U to be removed.
                      Sometimes the springs just do not seem to push the head back to the correct position when the lever is closed back up.
                      Just remove the I/U and push the head side to side and down a few times, then refit the I/U. I found this cures it every time I've had this problem
                      Dickie, thanks for the tip, that seems to have fixed up this problem.

                        Comment

                        • Dickie
                          Trusted Tech

                          100+ Posts
                          • Nov 2011
                          • 190
                          #7
                          Re: C450 BOLD BLACK TEXT is FUZZY

                          No problem, glad to help

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