Light Problems C284e

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  • Bix
    Service Manager

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

    Light Problems C284e

    Hello,


    today I have a particular problem. The customer has a bizhub C284e and reports that the printer does not define the color well.
    Initially I thought of the black drum because it is the only one at the end of its life but in the office I have done several tests on different printers with new consumables but I get the same result.


    The printer is a bizhub C284e with 600k prints. All consumables are almost new except the black drum which I will soon be replacing. But I don't think I'll solve my problem because I tried to print the PDF on my C364e and C3351 in the office with the same results.


    Maybe there is some setting in the driver. I have tried both PCL and PS. I thought that with PS the problem got better but in reality it got worse!
    What do you think?

    original pdf cad

    org.jpg
    print result:
    https://i29.servimg.com/u/f29/16/84/89/65/img20210.jpg


    The colors all look the same and little different
    Tags: c284e, office, pdf, print
    • tsbservice
      Field tech

      Site Contributor
      5,000+ Posts
      • May 2007
      • 7635
      #2
      Re: Light Problems C284e

      Bix I'm sure you run Stabilization and gradations as well with cleaning IDC sensors and laser slits.
      Does the machine print other files OK? Can you open this file with another program and print? Also make sure the program they print from isn't taking settings over print driver.

      Good luck
      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
          #3
          Re: Light Problems C284e

          Hi, I proceeded with the calibration. I use Adobe Acrobat and it is a PDF.
          I have tried to indicate that it is a CAD, 1200DPI, print as image, removed quality compression and set maximum quality.
          Besides, I have no idea.

            Comment

            • femaster
              Service Manager

              1,000+ Posts
              • May 2011
              • 1417
              #4
              Re: Light Problems C284e

              That's quite the difference. I don't have an actual solution for you, but as a temporary fix you could go into service mode, then Image Process Adjustment/Max Image Density/Print and increase the maximum image density for each of the colors (not black) up a notch or 2 or 3 or 4. You will need to run image stabilization after changing the setting, but this should darken up the color shades, to make them easier to distinguish from each other, until you can come up with a better solution.

              Of course, this will have an affect on everything printed, so might be best to test with some other things as well to make sure it isn't over saturating something else they might print.
              Last edited by femaster; 09-05-2020, 01:42 AM.
              A Ricoh Service Tech for 7 year. A Konica Minolta Service Tech for 7 years. Now, KM service manager for 4 years.
              My Ricoh knowledge is slowly dwindling away at this point. Many things have been lost to time...

                Comment

                • blackcat4866
                  Master Of The Obvious

                  Site Contributor
                  10,000+ Posts
                  • Jul 2007
                  • 22703
                  #5
                  Re: Light Problems C284e

                  The light green shading reads as C:5, M:0, Y:8, K:7
                  The light blue shading reads as C:11, M:5, Y:0, K:0

                  Unless you've got a Fiery, fills below 7% do not tend to reproduce well, especially on older technology.
                  If you've got your consumables current, and stabilization & gradation done, that's about as good as it will get.

                  Just this week I had this conversation with a customer trying to reproduce neon green business cards on a bizhub C754e with Fiery. I presented the following color gamut graph:

                  Color Gamut.jpg

                  I explained that:
                  The full circle is all the visible colors
                  The yellow outline is the colors that your monitor can produce
                  The red outline is Pantone defined ink colors
                  The blue outline is what your MFP can produce.
                  There are a lot more colors that you can see, and that your monitor can produce, and that can be printed in ink ... than you can do on a copier.

                  Her first comment was: "Most of those greens aren't in the blue outline. Maybe we should select a color that we can print."

                  If only I could have a few more customers like this one. =^..^=
                  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

                    • Phil B.
                      Field Supervisor

                      10,000+ Posts
                      • Jul 2016
                      • 22808
                      #6
                      Re: Light Problems C284e

                      Originally posted by Bix
                      Hi, I proceeded with the calibration. I use Adobe Acrobat and it is a PDF.
                      I have tried to indicate that it is a CAD, 1200DPI, print as image, removed quality compression and set maximum quality.
                      Besides, I have no idea.
                      what printer *if any* printed a hard copy they could be comparing your print to?

                      can the acrobat vers you are running reproduce @1200dpi? what can it reproduce to .dpi level?

                      if the .pdf is of lessor quality can they expect the same of the original file.

                      Are they comparing a monitor **Display settings vs print ability**

                      are the graphic designers par chance?

                        Comment

                        • copyman
                          Owner / Technician

                          Site Contributor
                          2,500+ Posts
                          • Sep 2005
                          • 4217
                          #7
                          Re: Light Problems C284e

                          If you tried all new supplies and still can't get colors right keep in mind that machine will only do "business class" color prints. If all else fails you could add an EFI Fiery print controller. These are being sold for around $200 on Ebay (this was a $4k option). You will get true colors and defined lines for sure.

                            Comment

                            • Bix
                              Service Manager

                              1,000+ Posts
                              • Apr 2018
                              • 1421
                              #8
                              Re: Light Problems C284e

                              the bizarre thing is that the situation has gradually worsened by changing the drivers. Initially I have the universal ones. The lines were visible enough but could be improved. I switched to original C364 PCL6 and then PostScript. With Postascript the light colors are completely gone. Being Adobe Acrobat, I was thinking in an improvement!

                              I considering testing more of my office printers, I believe more on the Blackcat idea. Some colors we see on monitors cannot be reproduced with these printers. I believe that for that kind of quality you need an inkjet printer (?)

                                Comment

                                • tsbservice
                                  Field tech

                                  Site Contributor
                                  5,000+ Posts
                                  • May 2007
                                  • 7635
                                  #9
                                  Re: Light Problems C284e

                                  Try it with another PDF viewer like Foxit reader.
                                  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

                                    • copier tech
                                      Field Supervisor

                                      5,000+ Posts
                                      • Jan 2014
                                      • 7934
                                      #10
                                      Re: Light Problems C284e

                                      Originally posted by Bix
                                      Hello,


                                      today I have a particular problem. The customer has a bizhub C284e and reports that the printer does not define the color well.
                                      Initially I thought of the black drum because it is the only one at the end of its life but in the office I have done several tests on different printers with new consumables but I get the same result.


                                      The printer is a bizhub C284e with 600k prints. All consumables are almost new except the black drum which I will soon be replacing. But I don't think I'll solve my problem because I tried to print the PDF on my C364e and C3351 in the office with the same results.


                                      Maybe there is some setting in the driver. I have tried both PCL and PS. I thought that with PS the problem got better but in reality it got worse!
                                      What do you think?

                                      original pdf cad

                                      [ATTACH=CONFIG]46706[/ATTACH]
                                      print result:
                                      https://i29.servimg.com/u/f29/16/84/89/65/img20210.jpg


                                      The colors all look the same and little different
                                      You say printing this same pdf on 2 other printers give the same result?

                                      This suggests to me the issue is with the document not the printers.
                                      Let us eat, drink, and be merry, because tomorrow we may die!

                                      For all your firmware & service manual needs please visit us at:

                                      www.copierfirmware.co.uk - www.printerfirmware.co.uk
                                      ​

                                        Comment

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