Trays picking up doubles sheets 250GSM and up!

Discussion in 'Xerox iGen3, iGen4, & iGen5 Digital Presses' started by sirstiv, May 12, 2016.

  1. sirstiv

    sirstiv Member

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    Location:
    Sydney, Australia
    Hi there,

    I was wondering if anyone could assist me before I place another call on this issue.

    It only happens on large XL sheets (660x364mm).

    Whenever I run 250gsm or higher I get a lot of random jamming.

    I'll always find 2 sheets stuck in Print Areas 1+2.

    Is there anyway to fix this?

    I've tried the following:

    * cleaned all corresponding rollers
    * got the tech to set the correct NVMs for paper size
    * rotated/flipped stock
    * used 4 different brand of stocks
    * disconnected and reconnected the heater fan
    * turned it on and off again (lol)

    Does anyone else get this issue? Is there a fix? I've had a called placed on this like 3 times now over the span of 6 months.... It only bothered me when I have big runs otherwise I just deal with it.

    Generic Error Codes:
    XPE-08-5220
    X2F-08-5103
    X2F-08-1107 - (Stock process length measurement error)
    X2F-08-1113
    X2F-08-1211 - (Paper Width fault at process edge L sensor)
    X2F-08-1105 - (LE late to TAR/Multifeed sensor) - assuming LE = Long Edge

    -Steve
     
    Last edited: May 12, 2016
  2. sirstiv

    sirstiv Member

    Joined:
    Jan 2016
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    Location:
    Sydney, Australia
    Update:

    I detached, unscrewed and cleaned the TAR sensor near the roller knob on the tray. (it's a clear blue U shape sensor) - No difference.

    I then set the stock from 660 to 660.4mm (long edge) as I was getting Long edge errors... so far it's run 1000 sheets without a jam.

    The specs say the maximum length is 660.4 ... honestly if this has fixed it then that's beyond a joke.

    Do you all have the XL size set to 660.4mm?
     
  3. CargoPantsMan

    CargoPantsMan Senior Member

    Joined:
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    Location:
    Chicago
    I can't believe that 0.4mm is triggering a length error. We have a lot of stock cut in house and I can tell you some of the sheets within a stack can vary by more than that. (Registration bounces left and right all over the place sure, but it runs.)

    I've had issues with long sheets that usually get solved by me taking off the front panel and adding shims to help level the stock out versus the trays default angle.

    Also, the second blower in the tray can be moved from one post to the other fairly easy, so if you notice that the sheets aren't fluffing enough (ie, the top sheets is dragging the next sheet with it) you can try moving it to see if that helps.

    Sometimes, especially with thick stocks from certain vendors, I'll have to fight sheet curl as well. My favorite is one where every sheet curls the opposite direction of the next and so on down the stack. Double feeds like mad unless I manually separate them into two separate stacks.
     
  4. peels

    peels tree killer :)

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    southeast iowa, usa
    If it IS fixed by a size "faking out" I wouldnt be shocked. That kinda thing is my M.O. with xerox. "lie" to the machine. IF its what I deal with... EVERY DAY.... my paper is ALWAYS exceptionally curled.


    adjust stack height. Xerox will say you dont need to do this... but thats BS. I CONSTANTLY have to futz with it. the so called smart drawer that changes its angle, isnt smart enough, and throws off the stack height. I use Rolled up or folded pieces of paper... adjusting for any slight curl. (i do this with MANY machines)

    Ive also messed with the air knives jets whatever xerox wants to call them. Wrap the foam with tape around them and out over the end to funnel the air all the way to paper. LOL ive done some weird stuff.


    cheat your vertical door. Grab flashlight, I use my phone... watch drawer come up CLOSELY. if its close to the feedhead you can pull double becuase stack height puts too much pressure against it. AND/OR the air from the jet is too low on the stack, and isnt separating sheets. there needs to be space for the air to blow the paper up......

    Ive spent so much of my life doing this, its not funny.
     
  5. Swifty2

    Swifty2 Senior Member

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    STATIC!!... whats the humidity in the shop??
     
  6. sirstiv

    sirstiv Member

    Joined:
    Jan 2016
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    Location:
    Sydney, Australia
    The shop runs at around 20 degrees celsius and 40-43% humidity all year round.

    We run shrink wrapped boards in the trays for extra 'oomph'.

    So far the extra faking out of 0.4mm yielded better results.

    Instead of jamming every 20-100 sheets i'd get a jam every 1000-1500 sheets.

    Restored some of my sanity not having to run batches of 25 sheets to the top tray.

    The idea of moving the blower fan is a good idea! It's only held by one screw... I may move it to the middle if I get desperate in future.
     
  7. peels

    peels tree killer :)

    Joined:
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    Messages:
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    Location:
    southeast iowa, usa
    I run some stock where 1000-1500 sheets between jams would be considered Monumental.

    In fact, if I get half that on some of them, I feel lucky. :)

    good luck. I'm intrigued on this "moving the blower" idea.
     

  8. Tommy Bee

    Tommy Bee Member

    Joined:
    Jul 2014
    Messages:
    8
    Location:
    Pennsylvania
    Had the same problem with the two to three sheets in print area 1 + 2. I had to put 1/4 - 3/8 of an inch of letter sized chipboard under the lead edge of the stack to get heavy paper to run.
     
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