458e image quality black stripe

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  • Bix
    Service Manager

    1,000+ Posts
    • Apr 2018
    • 1421
    #1

    458e image quality black stripe

    hi i have a bizhub 458e with about 300k pages.
    I replaced the drum at around 230k. Now the transfer belt and the 2nd transfer roller because it has reached periodic maintenance.


    All OEM. Unfortunately, I have this black stripe. When I went I forgot to check the fuser roller to see if it was dirty.


    For me the roller inside the fuser is dirty. What do you think? Even after several stabilizations, the problem remains.

    thank you


    Testseite 1.pdf
    Testseite 2.pdf
    Tags: 458e, dirty, fuser, roller, transfer
    • allan
      RTFM!!

      5,000+ Posts
      • Apr 2010
      • 5445
      #2
      Re: 458e image quality black stripe

      Think you are right. Check the fuser roller surface for defects.
      You can try to increase the fuser temp a touch to check if it helps.
      Is it always on the same space on the paper?
      Whatever

        Comment

        • Synthohol
          Certified Konica Expert

          Site Contributor
          5,000+ Posts
          • Mar 2016
          • 5458
          #3
          Re: 458e image quality black stripe

          basic troubleshooting 101 again, print a halftone test pattern in service mode and stop it before it goes in the fuser and inspect. or half fused half unfused.
          you will find the culprit, i have no doubt :
          We know a thing or two because we've seen a thing or two.
          The medication helps though...

            Comment

            • blackcat4866
              Master Of The Obvious

              Site Contributor
              10,000+ Posts
              • Jul 2007
              • 22698
              #4
              Re: 458e image quality black stripe

              It looks a bit like the fuser to me too, The combination of speckling (left over unfused toner), and chipping in the solids. It would help to see an image with more fill. Try this:

              I'm sure that you'll figure it out.
              Attached Files
              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 =^..^=

                Comment

                • Woxner
                  Senior Tech

                  500+ Posts
                  • Jul 2011
                  • 808
                  #5
                  Re: 458e image quality black stripe

                  looks like fuser to me. ive seen these only go 300k

                    Comment

                    • Bix
                      Service Manager

                      1,000+ Posts
                      • Apr 2018
                      • 1421
                      #6
                      Re: 458e image quality black stripe

                      hello, I confirm: it is the fuser. I have installed a new unit. The problem is now solved.


                      The roller looks good but the toner is set. Do you think there is a way to recover it? Perhaps with some isopropyl alcohol.

                        Comment

                        • Bix
                          Service Manager

                          1,000+ Posts
                          • Apr 2018
                          • 1421
                          #7
                          Re: 458e image quality black stripe

                          Also today! A bizhub 308e with 280k has the same problem. I saw the fuser roller and it is ruined in the same spot, like the 458e. This time the roller is even more ruined.

                            Comment

                            • tsbservice
                              Field tech

                              Site Contributor
                              5,000+ Posts
                              • May 2007
                              • 7635
                              #8
                              Re: 458e image quality black stripe

                              Originally posted by Bix

                              The roller looks good but the toner is set. Do you think there is a way to recover it? Perhaps with some isopropyl alcohol.
                              I tried once out of curiosity but failed. You may be more lucky.
                              A tree is known by its fruit, a man by his deeds. A good deed is never lost, he who sows courtesy, reaps friendship, and he who plants kindness gathers love.
                              Blessed are they who can laugh at themselves, for they shall never cease to be amused.

                                Comment

                                • Bix
                                  Service Manager

                                  1,000+ Posts
                                  • Apr 2018
                                  • 1421
                                  #9
                                  Re: 458e image quality black stripe

                                  All bizhub 308e and some 458e at around 200k have the exact same problem in the fuser. It starts to get dirty and there is no way to clean it except by replacing it.


                                  The fuser has a new part number, as well as simply indicating with a sticker that the fuser is hot, I hope something has changed.
                                  The normal 8 series, so far no problem.

                                    Comment

                                    • tsbservice
                                      Field tech

                                      Site Contributor
                                      5,000+ Posts
                                      • May 2007
                                      • 7635
                                      #10
                                      Re: 458e image quality black stripe

                                      Good to know. Even we have only single one B&W bizhub 558e in the field. Now I'm more happy with our fleet of C258 machines.
                                      A tree is known by its fruit, a man by his deeds. A good deed is never lost, he who sows courtesy, reaps friendship, and he who plants kindness gathers love.
                                      Blessed are they who can laugh at themselves, for they shall never cease to be amused.

                                        Comment

                                        • Genotrom
                                          Technician

                                          50+ Posts
                                          • Feb 2020
                                          • 77
                                          #11
                                          Re: 458e image quality black stripe

                                          I also have this problem in several 368e. Has anyone checked if the new fuser has improvements? (On konica minolta they only indicate the addition of a yellow sticker)

                                            Comment

                                            • Bix
                                              Service Manager

                                              1,000+ Posts
                                              • Apr 2018
                                              • 1421
                                              #12
                                              Re: 458e image quality black stripe

                                              I believe that they only added the yellow sticker to the fuser. But I have not yet had the opportunity to check if it also happens with that.

                                                Comment

                                                • Bix
                                                  Service Manager

                                                  1,000+ Posts
                                                  • Apr 2018
                                                  • 1421
                                                  #13
                                                  Re: 458e image quality black stripe

                                                  I recently maintained a bizhub 458e.
                                                  Do you want to guess? I smell a new fuser that will soon fail. This printer has 230k and recently I changed the drum. I did all the calibrations but out of curiosity, I wanted to do a quality test.
                                                  458EFUSER.pdf
                                                  I have seen that it leaves marks on the print where there is a lot of toner. This seems like a new fuser that fails prematurely
                                                  For now, all my bizhub 458e have not exceeded 300k copies with the fuser.

                                                    Comment

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