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  1. #1
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    Prints-density color problem. C452

    I have a problem with a konica minolta C452.
    As you can see in attached examples, the beginning of prints are lighters.
    I check belt, transfer roller, and laser, but i cant solve the problem.
    Any idea?
    Attached Images Attached Images

  2. #2
    Service Manager 1,000+ Posts
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    Re: Prints-density color problem. C452

    Those prints are ran thru in portrait direction? Did you do a stop test?

  3. #3
    Service Manager 2,500+ Posts
    Prints-density color problem. C452

    Synthohol's Avatar
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    Re: Prints-density color problem. C452

    There is an adjustment for 2nd transfer lead edge I believe.
    Play with those numbers and see what changes.

  4. #4
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    Re: Prints-density color problem. C452

    Quote Originally Posted by mo0651 View Post
    Those prints are ran thru in portrait direction? Did you do a stop test?
    Yes, portrait direction.
    No i didnt stop test. Best way to do stop test?

  5. #5
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    Re: Prints-density color problem. C452

    Quote Originally Posted by Synthohol View Post
    There is an adjustment for 2nd transfer lead edge I believe.
    Play with those numbers and see what changes.
    I play but nothing change...

  6. #6
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    Re: Prints-density color problem. C452

    have you tried cleaning your second transfer roller ?

  7. #7
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    Re: Prints-density color problem. C452

    Quote Originally Posted by tehrancopy.com View Post
    have you tried cleaning your second transfer roller ?
    Yes, i change for 1 new transfer roller...

  8. #8
    Senior Tech 100+ Posts
    Prints-density color problem. C452

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    Re: Prints-density color problem. C452

    Strange,had this on a couple of these and what synthohol suggested rectified the problem.
    Did you adjust it correctly?
    Also did you do a panic stop to see if it happens on 1st or 2nd transfer?
    I don't like the new copier I just bought. It says "put face down" but every time I do it, it blinds my eyes.

  9. #9
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    Re: Prints-density color problem. C452

    Quote Originally Posted by DigiMan View Post
    Strange,had this on a couple of these and what synthohol suggested rectified the problem.
    Did you adjust it correctly?
    Also did you do a panic stop to see if it happens on 1st or 2nd transfer?
    Yes, i do panic stop, and image in transfer belt is perfect, i think the problem is on second transfer, but i change second transfer roller and check second transfer mechanism and all seems fine, electrical problem maybe?

  10. #10
    Service Manager 2,500+ Posts
    Prints-density color problem. C452

    Synthohol's Avatar
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    Re: Prints-density color problem. C452

    sometimes just to see if it is an electrical issue, try setting it to thick 1,2 or 3 to see if the problem changes. if yes then its likely electrical, if no change it might be something mechanical. check the contact point on the copier where the transfer roller gets its juice and the terminal spring that touches it.

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