DR 7550 image scanner blurry

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  • COPYDOCAZ
    Trusted Tech

    100+ Posts
    • Mar 2015
    • 110
    #1

    DR 7550 image scanner blurry

    I have several of these HI speed Image scanners that have the same problem, they are stretching the image about one inch down from the lead edge. This is an intermittent problem that seems to get worse with use. Can anyone out there provide support for this issue, any help would be appreciated.


    Mark
    Tags: image, intermittent, mark
    • 20 year tech
      Senior Tech

      500+ Posts
      • May 2014
      • 577
      #2
      Re: DR 7550 image scanner blurry

      worth a shot

      Product :
      DR Scanner 6050C / 6080 / 7550C / 7580 / 9050C / 9080C
      Title :
      Stretched lead edge image on simplex and duplex
      Problem :

      Stretched lead edge image on simplex and duplex.

      Solution :

      In several cases the stretched image at the lead edge was caused by worn registration and reading rollers in the lower unit. Replacing these rollers resolved the issue.

      *9050C / 7550C / 6050C
      Lower Reading Roller MF1-4597-000
      Lower Registration Roller MF1-4596-000

      *6080 / 7580 / 9080C
      Lower Reading Roller MF1-4261-000
      Lower Registration Roller MF1-4241-000

        Comment

        • Phil B.
          Field Supervisor

          10,000+ Posts
          • Jul 2016
          • 22798
          #3
          Re: DR 7550 image scanner blurry

          Originally posted by 20 year tech
          worth a shot

          Product :
          DR Scanner 6050C / 6080 / 7550C / 7580 / 9050C / 9080C
          Title :
          Stretched lead edge image on simplex and duplex
          Problem :

          Stretched lead edge image on simplex and duplex.

          Solution :

          In several cases the stretched image at the lead edge was caused by worn registration and reading rollers in the lower unit. Replacing these rollers resolved the issue.

          *9050C / 7550C / 6050C
          Lower Reading Roller MF1-4597-000
          Lower Registration Roller MF1-4596-000

          *6080 / 7580 / 9080C
          Lower Reading Roller MF1-4261-000
          Lower Registration Roller MF1-4241-000
          yup most time scanner stretching is due to rollers being smooth

            Comment

            • Canuck
              Tech Specialist

              1,000+ Posts
              • Nov 2007
              • 1713
              #4
              Re: DR 7550 image scanner blurry

              Push down on the upper half while scanning and see if it helps. The diameter of the rolls gets too small and they slip or the speed is too slow. If just slipping, I lower the latch pins on the lower base about 2 mm so when it closes it latches more firm. How many scans on unit? Usually starts to happen around 2 million...

                Comment

                • KenB
                  Geek Extraordinaire

                  2,500+ Posts
                  • Dec 2007
                  • 3945
                  #5
                  Re: DR 7550 image scanner blurry

                  I’ve never worked on scanners.

                  I have, however (in my past life), serviced about a million fax machines, as that was all I did for about 7 years straight. All Canon back in those days. The technology is very similar in this area between the two.

                  Seeing this exact issue was litterally a daily event, with the pages being elongated in the feed direction.

                  Sometimes it was barely noticeable. If the wear was severe enough it would cause a letter size to become legal. If it was really bad, a second letter size page would be generated.
                  “I think you should treat good friends like a fine wine. That’s why I keep mine locked up in the basement.” - Tim Hawkins

                    Comment

                    • roho
                      Senior Tech

                      500+ Posts
                      • Mar 2009
                      • 844
                      #6
                      Re: DR 7550 image scanner blurry

                      Originally posted by Canuck
                      Push down on the upper half while scanning and see if it helps. The diameter of the rolls gets too small and they slip or the speed is too slow. If just slipping, I lower the latch pins on the lower base about 2 mm so when it closes it latches more firm. How many scans on unit? Usually starts to happen around 2 million...
                      I have also tried this mod with sucess, it eliminated stretching and also made the unit quieter.

                        Comment

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