Question about Konica Minolta Bizhub C220 Color Copier/Printer/Scanner

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I have a machine that has a white streak down the centre of the page on cyan ...I have replaced drum and dev units ,transfer belt, print head unit ,toner and H.V unit. I still have the white streak down the middle of the page when doing half tones in test mode. can some please help me...

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  • Clement Williams
    Clement Williams Oct 21, 2013

    Please note that this has nothing to do with scanning...I am a engineer from Konica Minolta.

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Need to clean your scanner glass

Posted on Oct 21, 2013

Testimonial: "I have colour change when printing as the printer does not add cyan down the middle of the page...so blues would turn out orange."

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Vertical white skreaks when printing


Check the remaining service life of the drums, also check the condition of your transfer belt. It is most likely your problem is one of those two elements.

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Check your consumables. Press utility then check consumables. If anything is at the end of life, it needs replaced. It sounds like your drums are not cleaning properly and need to be changed. If they are fairly new, then I would suspect the transfer belt. If you know hoe to get into service mode you can go into test mode. Then run your halftones on each color. If it moves around, its your drums. If it stays in one spot, its your transfer belt. Also you could check your drum units. If they have streaks going across the green drum, like its dirty, then its coming from the drums.

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Ricoh Aficio 3800C: How do you clean the Development Unit Hello, I have a Ricoh Aficio 3800C. I noticed that there are faint Cyan streaks when I print. I opened up the printer/copier unit and looked at...


I believe what you are referring to is the drum inside the toner cartridge. The drums are usually very strong colors, blue or green and if it is streaking then the drum cleaning blade has failed on the inside and you need to replace the cartridge.

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What does code: DK means?. How can I fix it?


This code indicates that the Black Drum has reached 100k. It could also be the black developer and primary transfer belt are at 100k.

DC = Drum Cyan
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Even if it is reset you will still need the drum unit or drum/mc kit replaced very soon. These units do not last much longer than specified. After this the print quality deteriorates rapidly. Eventually the drum edges wear away so much that they can force developer out of the dev tank. You can usually get away with not replacing the K dev. If you reset the K dev at the same time as replacing the K drum unit, the machine adjusts itself can function normally. A dev normally lasts 200-300K. The primary belt unit lasts longer than the 100K spec and often beyond 200K out of them before replacement or refurbishment.

Finally, make sure that the Firmware is up to date.

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you can try printing a page in black only, then one page each in the 3 other SINGLE colors: Cyan, Magenta, and Yellow. this will eliminate/ confirm one of these causing problem.

the replacement of Transfer Belt Cleaner or Cleaner Assembly is another to try after the above separate-color thing. see if there's a status page of life remaining on replaceable items, including the Transfer belt assy.

i'll assume you didn't scan the job- - this isn't a multifunction scanner/printer type machine?

ok, next in line is to check the Fuser unit, the part on the upper left side/top of printer. if the same streaks appear on the Main fuser rollers, these fuser units cost about 350 bucks. there is also a Fuser Kit, which costs much less, but its job is to add Fuser Oil to the fuser unit and keep paper and ink from sticking.
a guy could suffer sticker shock from the costs of running one of these, considering you could drop a grand buying all 4 drum units, a fuser unit, and a transfer belt assy. . . .

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