Results 1 to 9 of 9
  1. #1
    Master Of The Obvious 10,000+ Posts
    C1060 interesting artifact

    blackcat4866's Avatar
    Join Date
    Jul 2007
    Location
    Lapeer, Michigan
    Posts
    22,442
    Rep Power
    462

    C1060 interesting artifact

    The enduser shows me an artifact, let's call it a "smudge", towards the trail edge ONLY when printing onto 271gsm media. The images are nearly 350% fill (almost solid black edge to edge). The artifact is 6.5mm wide and 32mm long measured from the trailing edge. It's hard to see on the 350%fill prints, but I lucked out getting a perfect example on the Fiery start up pages. Yes it's got the correct media type set, but there is pretty significant curl even on simplex images.

    Artifact.JPG

    So I found two things:
    First I removed the rubber seal on the registration guide. It had a wave that stuck up at the center.
    Second I adjusted the paper curl to +1.5, which flattened it right out.

    What I think was happening was when the heavy media gets fused it's curling the paper and the trail edge flips. I think that rubber seal was skimming toner off of the primary transfer belt, and depositing it on the trail edge when it flipped.

    Primary Transfer Belt Seal.jpg

    I thought it was worth posting about. =^..^=
    If you'd like a serious answer to your request:
    1) demonstrate that you've read the manual
    2) demonstrate that you made some attempt to fix it.
    3) if you're going to ask about jams include the jam code.
    4) if you're going to ask about an error code include the error code.
    5) You are the person onsite. Only you can make observations.

    blackcat: Master Of The Obvious =^..^=

  2. #2
    Senior Tech 100+ Posts
    Join Date
    Dec 2015
    Location
    Erie,PA
    Posts
    186
    Rep Power
    21

    Re: C1060 interesting artifact

    Yes I have seen this, C6500 and up. That is one of the first things that I take off. I know that it serve a purpose for something, make smudges I guess.

    Thanks
    KEN

  3. #3
    Technician OverKnight's Avatar
    Join Date
    Sep 2019
    Location
    Powell, TN
    Posts
    40
    Rep Power
    10

    Re: C1060 interesting artifact

    I'm adding to this thread because I have something similar coming from this area.

    When running sheet with an image of flooded black and gradients (see sample image), there is a ripple forming down the sheet. This doesn't seem to repeat itself on jobs with major CMY color.

    IMG_2972_Circled_Opt.jpgIMG_2973_Full_Opt.jpgIMG_2974_Buckled_Image.jpg

    As you can see in the sample image, the weakness starts on the side but will intensify and skip into the center and then become very pronounced. This will occur only if the run is long enough to allow for the timing of the issue, run for 5-6 sheets with the issue and then return back to normal. Again, if the run is long enough, the cycle will then repeat itself.

    In both sample images, the images are pure black not a build and the Pro Lightning is the worse case scenario.

    My concern is a diagonal stress from the stock entering into the transfer area causing a ripple to form and then going into the fuser. This is a label stock and set at 217-256 g/m2which is close to max for this C1060.

    My guess is the registration roller is pulling the stock diagonally and at the image transfer point buckling a bit causing the image weakness in black.

    Appreciate any ideas. Thanks!
    Last edited by OverKnight; 02-08-2021 at 06:07 PM.

  4. #4
    Senior Tech 250+ Posts
    C1060 interesting artifact

    wjurls's Avatar
    Join Date
    Feb 2017
    Location
    Riverside, CA
    Posts
    400
    Rep Power
    29

    Re: C1060 interesting artifact

    There was just a recent posting about this on the Konica Tech Training "Jam" forum. Seems that black mylar wreaks all kinds of havoc.

  5. #5
    Technician OverKnight's Avatar
    Join Date
    Sep 2019
    Location
    Powell, TN
    Posts
    40
    Rep Power
    10

    Re: C1060 interesting artifact

    wjuris,

    I just added a third image which I will repeat here to clarify my description:
    IMG_2974_Buckled_Image.jpg

    Do you have a link to that thread you mentioned and what do you mean "black mylar"?

    Thanks!

  6. #6
    RTFM!! 5,000+ Posts allan's Avatar
    Join Date
    Apr 2010
    Location
    Centurion
    Posts
    5,387
    Rep Power
    152

    Re: C1060 interesting artifact

    Quote Originally Posted by OverKnight View Post
    wjuris,

    I just added a third image which I will repeat here to clarify my description:
    IMG_2974_Buckled_Image.jpg

    Do you have a link to that thread you mentioned and what do you mean "black mylar"?

    Thanks!
    That looks like voids on the mag roller. Could be contamination in the tank or low developer level.
    Whatever

  7. #7
    Technician OverKnight's Avatar
    Join Date
    Sep 2019
    Location
    Powell, TN
    Posts
    40
    Rep Power
    10

    Re: C1060 interesting artifact

    Quote Originally Posted by allan View Post
    That looks like voids on the mag roller. Could be contamination in the tank or low developer level.
    I would agree with you, but the developer is at 58% and the problem is not a constant. I would expect a problem with a roller or developer to be constant while this issue starts and stops in intervals.

    The one consumable that is past it's life is the coronas. I have a corona set coming in and I know that this issue will disappear, however I want to ensure that it doesn't signify something else more pressing.

    Thanks!

  8. #8
    Master Of The Obvious 10,000+ Posts
    C1060 interesting artifact

    blackcat4866's Avatar
    Join Date
    Jul 2007
    Location
    Lapeer, Michigan
    Posts
    22,442
    Rep Power
    462

    Re: C1060 interesting artifact

    Quote Originally Posted by allan View Post
    That looks like voids on the mag roller. Could be contamination in the tank or low developer level.
    +1. allan is right. And we've had plenty of cases where the developer craps out as early as 30% of life. I haven't been able to pin it down to a specific developing unit, because changing that black developer will last 100% to 120% in the same old developing unit. I believe it's just a bad batch of developer.
    =^..^=
    If you'd like a serious answer to your request:
    1) demonstrate that you've read the manual
    2) demonstrate that you made some attempt to fix it.
    3) if you're going to ask about jams include the jam code.
    4) if you're going to ask about an error code include the error code.
    5) You are the person onsite. Only you can make observations.

    blackcat: Master Of The Obvious =^..^=

  9. #9
    Senior Tech 250+ Posts
    C1060 interesting artifact

    wjurls's Avatar
    Join Date
    Feb 2017
    Location
    Riverside, CA
    Posts
    400
    Rep Power
    29

    Re: C1060 interesting artifact

    Quote Originally Posted by OverKnight View Post
    wjuris,

    I just added a third image which I will repeat here to clarify my description:
    IMG_2974_Buckled_Image.jpg

    Do you have a link to that thread you mentioned and what do you mean "black mylar"?

    Thanks!
    The black mylar is the one on the second transfer unit guide just before the roller.

    "Jam" is an private forum from KM technical training so it can't be linked to.

    What you show here is what Konica refers to as "developer screw marks" Your black developer is depleted and you are seeing the effect from the stirring auger in the developing unit.

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Get the Android App
click or scan for the Copytechnet Mobile App

-= -= -= -= -=


IDrive Remote Backup

Lunarpages Internet Solutions

Advertise on Copytechnet

Your Link Here