Curved Thick Paper on Bizhub C250i/300i etc... series

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  • Pupo_Tore
    Junior Member
    • Aug 2022
    • 2
    #1

    Curved Thick Paper on Bizhub C250i/300i etc... series

    Hi guys!

    Hope someone could give me some advice...
    We have a few customers who prints their Menu's on thick paper (between 100g-150g). We noticed that those prints on thick paper comes out with one big curve. With duplex print its obviously better, but still "bend" on two edges.
    Fusing Temp/Speed changes slightly the situation, but absolutly not acceptable. With different Paper-Manfucatures the problem remains the same. Maybe someone out there with the same issue?
    The problem is the same on 25/pages machines and also on 45/pages, no difference. To be correct, we provide Olivetti as Brand, so the issue is on the "MF259 etc", that are the same as the C250i and so on

    Thanks in advance for your support!
    Last edited by Pupo_Tore; 03-07-2023, 06:24 PM.
    Tags: paper, paper-manfucatures, prints, thick
    • elmaligno
      Expert technician KM

      250+ Posts
      • Oct 2009
      • 296
      #2
      Re: Curved Thick Paper on Bizhub C250i/300i etc... series

      Originally posted by Pupo_Tore
      Hi guys!

      Hope someone could give me some advice...
      We have a few customers who prints their Menu's on thick paper (between 100g-150g). We noticed that those prints on thick paper comes out with one big curve. With duplex print its obviously better, but still "bend" on two edges.
      Fusing Temp/Speed changes slightly the situation, but absolutly not acceptable. With different Paper-Manfucatures the problem remains the same. Maybe someone out there with the same issue?
      The problem is the same on 25/pages machines and also on 45/pages, no difference. To be correct, we provide Olivetti as Brand, so the issue is on the "MF259 etc", that are the same as the C250i and so on

      Thanks in advance for your support!
      I hope this helps you
      Attached Files
      Field technician since 1994

        Comment

        • Pupo_Tore
          Junior Member
          • Aug 2022
          • 2
          #3
          Re: Curved Thick Paper on Bizhub C250i/300i etc... series

          Originally posted by elmaligno
          I hope this helps you
          Thanks for the fast response!
          Its strange that there is no real purpose for the change in the document. Do you think the 2nd transfer could really "curve" the paper?
          We will absolutly give a try at this!
          In attachment to this post some pictures of the paper to have in idea... 2 pictures are tests in our shop. The 3rd is made by our customer. Obviously everything worked fine with the "old" machine that they had before(a MF454, equals to a C458)IMG_20230216_164933_resized_20230216_045445523.jpg
          Attached Files

            Comment

            • Gift
              Service Manager

              1,000+ Posts
              • Mar 2011
              • 2444
              #4
              Re: Curved Thick Paper on Bizhub C250i/300i etc... series

              I think "it is what it is" and another transfer roller won't change that since this occures as a side effect during the fusing process. The manufacturers are cutting costs on all ends - Ricoh also "lightened" up the complecity of the exit unit for some models so there is less effect in reducing of curling/curving tendency. You will also notice that different sorts of papers do show this more or less depending of the quality and if the paper is optimized for LEF/SEF operation. Humidityand low temperature room enviroment can also increase thie phenomenon. C458 might also had a fuser with larger diameters so it's nip band (the area where both roller are pressed together) is less curvy by design leading to less curvy print results.

              Usually the effect reverses a lot once the print stack has cooled down and sit for a while.

                Comment

                • and
                  Technician

                  50+ Posts
                  • Oct 2011
                  • 93
                  #5
                  Re: Curved Thick Paper on Bizhub C250i/300i etc... series

                  Originally posted by elmaligno
                  I hope this helps you
                  For me, the only difference between the two "2nd image transfer roller" is the gear that couples the transfert belt.
                  The new transfer roller as the gear as the series 4e and 8.

                    Comment

                    • elmaligno
                      Expert technician KM

                      250+ Posts
                      • Oct 2009
                      • 296
                      #6
                      Re: Curved Thick Paper on Bizhub C250i/300i etc... series

                      Originally posted by Pupo_Tore
                      Thanks for the fast response!
                      Its strange that there is no real purpose for the change in the document. Do you think the 2nd transfer could really "curve" the paper?
                      We will absolutly give a try at this!
                      In attachment to this post some pictures of the paper to have in idea... 2 pictures are tests in our shop. The 3rd is made by our customer. Obviously everything worked fine with the "old" machine that they had before(a MF454, equals to a C458)[ATTACH=CONFIG]57178[/ATTACH]
                      OK, so take a look at these bulletins I have prepared for you, and I'm sure they will help you.
                      Attached Files
                      Field technician since 1994

                        Comment

                        • tsbservice
                          Field tech

                          Site Contributor
                          5,000+ Posts
                          • May 2007
                          • 7911
                          #7
                          Re: Curved Thick Paper on Bizhub C250i/300i etc... series

                          Originally posted by elmaligno
                          OK, so take a look at these bulletins I have prepared for you, and I'm sure they will help you.
                          Good eye elmaligno.
                          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

                            • blackcat4866
                              Master Of The Obvious

                              Site Contributor
                              10,000+ Posts
                              • Jul 2007
                              • 22932
                              #8
                              Re: Curved Thick Paper on Bizhub C250i/300i etc... series

                              I like the look of this one better. This series does not have much in the way of de-curling. It's too bad it is not a production machine with real de-curling functionality. =^..^=
                              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

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