C900 + 272gsm coated Copy quality problem

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • Hemlock
    Trusted Tech

    250+ Posts
    • Dec 2009
    • 432
    #1

    C900 + 272gsm coated Copy quality problem

    So, my printshop ordered 12 point (coated on both sides) for a job (272gsm); MeadWestVaCo's Tango Advantage C2S Cover. I'm getting areas at the lead and trail edge of the image where the toner is either not transferring from the transfer belt *or* it's not being fused (regardless of paper orientation). Only noticable if doing pictures or a page with color across the whole sheet. Most of the center of the image is fine.

    I'm leaning toward transfer, as incomplete fusing isn't likely to isolate itself at the lead & trail edge. According to the Goose list (or whatever it's called) there's a service mode adjustment that impacts transfer charge at lead and trail.

    The wrinkle - I'm not trained yet, so I can't just go in and start making changes to the machine. I mean, I could, but then anything that goes awry will be blamed on me (jams in the finisher would likely be blamed on a change to teh transfer charge). One pre-req left before I can get scheduled for class. Background: 15 years on office & production equipment, Oce', KM, Toshiba, Kyocera, Sharp; both color & connectivity as well. Not exactly new to the rodeo, just to Ricoh.

    I guess what I'm asking for is any experience you have with running stock close to the 300gsm top end of the acceptable stock list and any issues with coated you've seen (and how you've resolved them). Thoughts?
    “Anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that 'my ignorance is just as good as your knowledge.'” (Isaac Asimov)
    Tags: altering, c900, coated, fuser, fusing unit, image quality, kyocera, lead edge, lef, oce, pcq, ricoh, sharp, thick, toshiba
    • soandso
      #2
      Hemlock,

      Before you try altering any advanced settings, just try setting the paper tray as Thick 3 and trying some of the options for paper type - Coated 1 to 3 or special 1 to 3 etc. These options increase or decrease the speed of the fusing unit compared to the image transfer section as well as increasing fusing temp. What you may find is that the poor image quality at the lead edge/trailing edge can be caused by the fuser pulling the document through the transfer section, rather than the transfer section feeding the stock to the fuser.

      Hope its of use!

        Comment

        • kingpd@businessprints.net
          Senior Tech

          500+ Posts
          • Feb 2008
          • 919
          #3
          I've had some success on some Xerox's by changing the settings like that on really thick stock.

            Comment

            • TonerMunkeh
              Professional Moron

              2,500+ Posts
              • Apr 2008
              • 3865
              #4
              Don't forget you have to tell the machine what stock it is feeding so it can set itself up accordingly.
              It's 106 miles to Chicago. We've got a full tank of gas, half a pack of cigarettes, it's dark and we're wearing sunglasses.

              Hit it.

                Comment

                • Hemlock
                  Trusted Tech

                  250+ Posts
                  • Dec 2009
                  • 432
                  #5
                  Thanks, guys. I found that the Tango 12 pt was noticeably stiffer than the 12 point on Ricoh's approved stock list. Switched to their stuff and the image came out correct.
                  “Anti-intellectualism has been a constant thread winding its way through our political and cultural life, nurtured by the false notion that democracy means that 'my ignorance is just as good as your knowledge.'” (Isaac Asimov)

                    Comment

                    • colortek
                      #6
                      The issue that's happening is called lead/trail edge whip, that is common to the C900 with thick paper. Basiclly, as the stock goes through the machine, the lead or trail edge isn't positioned correctly because of its thickness, causing the lack of image transfer. That's why when you used different paper off the approved paper list, it actually worked. Those setting changes that you mentioned will/could correct the issue if you preform them correctly.

                        Comment

                        Previous template Next
                        Working...