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  1. #1
    Service Manager 100+ Posts
    iR 5070 dog's ears via fuser


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    iR 5070 dog's ears via fuser

    It only does it on heavy paper - and not always. I got to test it, copies were fine. A few min later, it started curling the lead edge corners down (front and rear, sometimes front only) - dog's ears effect.
    TEmp/pressure from the fuser and paper is likely hitting something just past the fuser rollers, or before exiting (via finisher). It's hard to stall this to catch the fault, because it sometimes doesn't do it.
    Adjustments? There are two screws with springs to the left of the fuser unit - what are they for?

    Last edited by Dexor; 10-27-2010 at 02:07 AM. Reason: typo

  2. #2
    East Coast Imaging 2,500+ Posts
    iR 5070 dog's ears via fuser

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    If its intermit what makes you suspect its happening when passing thru the fuser?

    Those two screw with the two springs are where nip adjustments are made.
    These springs apply pressure between the fixing and pressure roller.
    Do not adjust these springs!

    Canon Copier Repair Service. Sales, Parts & Toner. NYC/NJ area. Contact:East Coast Imaging Solutions,LLC

  3. #3
    Tech Specialist 1,000+ Posts Canuck's Avatar
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    Face up or face down delivery?


  4. #4
    Service Manager 100+ Posts
    iR 5070 dog's ears via fuser


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    Face up or face down delivery?
    Good question, I was wondering about it myself - dog's ears are happening when copy comes out face down. Why are they sometimes come face up (no dog's ears on those occasions); but then I also had face down coming out, and - no problems. Not consistent...


  5. #5
    Service Manager 100+ Posts
    iR 5070 dog's ears via fuser


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    Quote Originally Posted by SCREWTAPE View Post
    If its intermit what makes you suspect its happening when passing thru the fuser?
    If it was happening before the fuser the ears would have been flattened down good - as it is, they seem to be hitting something past the fuser, as the corners are just bent, not flattened out.


  6. #6
    East Coast Imaging 2,500+ Posts
    iR 5070 dog's ears via fuser

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    Quote Originally Posted by Dexor View Post
    If it was happening before the fuser the ears would have been flattened down good - as it is, they seem to be hitting something past the fuser, as the corners are just bent, not flattened out.
    Good point.

    Canon Copier Repair Service. Sales, Parts & Toner. NYC/NJ area. Contact:East Coast Imaging Solutions,LLC

  7. #7
    Service Manager 100+ Posts
    iR 5070 dog's ears via fuser


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    Quote Originally Posted by SCREWTAPE View Post

    Those two screw with the two springs are where nip adjustments are made.
    These springs apply pressure between the fixing and pressure roller.
    Do not adjust these springs!
    I did adjust them down a bit - and it seemingly fixed my problem. Quick sand territory here


  8. #8
    East Coast Imaging 2,500+ Posts
    iR 5070 dog's ears via fuser

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    Check around the fuser and delivery area good...

    Check the claw separating. Check the duplex unit area under the fixing unit.

    Check the flapper and its solenoid on the duplex unit.

    Look for jammed paper. Something is causing it.

    Canon Copier Repair Service. Sales, Parts & Toner. NYC/NJ area. Contact:East Coast Imaging Solutions,LLC

  9. #9
    East Coast Imaging 2,500+ Posts
    iR 5070 dog's ears via fuser

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    Quote Originally Posted by Dexor View Post
    I did adjust them down a bit - and it seemingly fixed my problem. Quick sand territory here
    Well what ya know, humm.

    I hope it sovled your problem.

    Were they tampered with before???

    Canon Copier Repair Service. Sales, Parts & Toner. NYC/NJ area. Contact:East Coast Imaging Solutions,LLC

  10. #10
    Service Manager 100+ Posts
    iR 5070 dog's ears via fuser


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    Quote Originally Posted by SCREWTAPE View Post

    Were they tampered with before???
    Not sure - it's a wild catch from the local 'scoop and fix' company. Will update later - if issues come up.
    BTW - like your avatar - the death of death


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