IR8500 Paper wrinkle

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • mezerwi
    Technician

    Site Contributor
    50+ Posts
    • Aug 2010
    • 58

    #1

    IR8500 Paper wrinkle

    Hi everyone,

    After copying about 100 pages, my recently bought IR8500 showing this kind of problem.

    IMG_20101118_155000 (Mobile).jpg

    Ive faced this problem with my laser printer before, which is HP 2200, so i changed it heating element to solve the problem. Is this the same concept with IR85?
  • davidj7
    Service Manager

    Site Contributor
    1,000+ Posts
    • Jan 2009
    • 1107

    #2
    it could be either the bushes on the both ends of the heater roll or the lower roller . Check on those and you will find your problem
    a machine is only as good as your tech : source:screwtape ; the scary one

    Comment

    • charm5496
      Service Manager

      Site Contributor
      1,000+ Posts
      • Apr 2008
      • 2387

      #3
      Is your paper in good shape...moisture free?

      Your 8500 and the HP-2200 are slightly different in the time it takes to rebuild the fuser, which this could easily be a worn out bushing or ground down shaft from a frozen or slipped bearing. You can open unit 1 and turn the green knob on the left. While turning make sure you are watching the fuser rollers to see if they are wobbling during rotation.

      Also verify that the company you bought this unit from did not have spacer screws in the fuser during shipment.
      Accidents don't just happen. They must be carelessly planned.

      Comment

      • Irish
        Trusted Tech

        100+ Posts
        • Nov 2007
        • 110

        #4
        That just looks like damp paper .. Much problem double siding? If so Def damp paper .. Assuming wrinkle is in direction of travel..

        Comment

        • fchu5959
          Field Engineer

          100+ Posts
          • Jun 2010
          • 100

          #5
          hi

          "Recently bought"....is it a new machine or refurbished one??what does the total counter read?

          I think, first of all, that you should eliminate any paper issue by trying another paper quality type.
          otherwise,the problem is definitely in the fixing assy.

          cheers

          Comment

          • Canuck
            Tech Specialist

            1,000+ Posts
            • Nov 2007
            • 1713

            #6
            Sometimes techs re-assemble upper fuser roll assembly incorrectly and the bearing falls out of place,or pressure roll and bearings are worn out. That is a very pronounced crease,something is not right,not just damp paper. My city has the highest humidity in Canada in summer and have never seen creases on a PROPERLY operating 8500 from damp paper

            Comment

            • mezerwi
              Technician

              Site Contributor
              50+ Posts
              • Aug 2010
              • 58

              #7
              Fixed the problem. It is because of the damp paper. Here in Malaysia, we cant leave paper inside the machine for more than 3 days, otherwise it would be too damp to be used. Thanks all. =D

              Comment

              • teckat
                Field Supervisor

                Site Contributor
                10,000+ Posts
                • Jan 2010
                • 16083

                #8
                Originally posted by mezerwi
                Fixed the problem. It is because of the damp paper. Here in Malaysia, we cant leave paper inside the machine for more than 3 days, otherwise it would be too damp to be used. Thanks all. =D

                tech tip>
                shrink wrap it/ with a food plastic wrap when out of package= believe me it works
                **Knowledge is time consuming, exhausting and costly for a trained Tech.**

                Comment

                • parsa

                  #9
                  chek yor up and down pres rppler in heter
                  Pressure between two rolls is too much

                  Comment

                  • mezerwi
                    Technician

                    Site Contributor
                    50+ Posts
                    • Aug 2010
                    • 58

                    #10
                    Same problem appears again. But this time its not about the paper. How to check bushing thingy?

                    Comment

                    • Matoku
                      Trusted Tech

                      100+ Posts
                      • Feb 2008
                      • 173

                      #11
                      is it two sided copy or single sided?
                      some time the paper guide at the paper entrance to the fusing unit also can cause this problem when it
                      dirt or not adjusted propperly.

                      Comment

                      • teckat
                        Field Supervisor

                        Site Contributor
                        10,000+ Posts
                        • Jan 2010
                        • 16083

                        #12
                        Originally posted by mezerwi
                        Same problem appears again. But this time its not about the paper. How to check bushing thingy?

                        Are U a Tech ???? { bushing thingy?} ????????????

                        Fixing assembly,
                        Check Paper guide
                        If the paper guide is soiled with toner or the like-
                        Clean the guide with solvent.
                        Is the height (position) of the paper guide correct-?
                        Adjust the height (position) of the paper guide.

                        Lower roller pressure, Upper/Lower roller pressure

                        Is the lower roller pressure (nip width) as indicated?
                        U need to Adjust the nip width.
                        Replace the upper and lower rollers at the same Time.
                        nip.JPG
                        nip2.JPG
                        **Knowledge is time consuming, exhausting and costly for a trained Tech.**

                        Comment

                        • mezerwi
                          Technician

                          Site Contributor
                          50+ Posts
                          • Aug 2010
                          • 58

                          #13
                          I take out the fixing unit, check the bushing on rear side and find out it been turned to ash...
                          Problem solved.

                          The only problem exist is that, when doing duplex, 1st side margin is ok, 2nd side totally misaligned. I think in Y direction. This one, I really dont have any idea how to solve it. -_-'

                          Comment

                          • mezerwi
                            Technician

                            Site Contributor
                            50+ Posts
                            • Aug 2010
                            • 58

                            #14
                            Anyone know ho to fix this? second side totally misaligned.

                            Comment

                            • mrfixit51
                              Lead Service Technician

                              1,000+ Posts
                              • Oct 2008
                              • 1975

                              #15
                              On the right hand side of the duplex assembly, is a horizontal registration assembly. A motor driven rack with a sensor on it to register the edge of the paper. The gear on the motor develops a crack that screws up the operation. try replacing that motor...
                              "Once a King, always a King, but once a Knight is enough!"

                              Comment

                              Working...