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  1. #1
    Senior Tech 100+ Posts COPYDOCAZ's Avatar
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    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


  2. #2
    Senior Tech 100+ Posts 20 year tech's Avatar
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    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



  3. #3
    Service Manager 2,500+ Posts
    DR 7550 image scanner blurry

    Phil B.'s Avatar
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    Re: DR 7550 image scanner blurry

    Quote Originally Posted by 20 year tech View Post
    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


  4. #4
    Tech Specialist 1,000+ Posts Canuck's Avatar
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    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...


  5. #5
    Geek Extraordinaire 2,500+ Posts KenB's Avatar
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    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.

    Some days you’re the dog, some days you’re the fire hydrant.

  6. #6
    Field Supervisor 500+ Posts roho's Avatar
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    Re: DR 7550 image scanner blurry

    Quote Originally Posted by Canuck View Post
    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.


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