Konica C220 print quality problem

[ferro10]

Hello everybody A customer reports quality problems printing on black. He says that wavy print (see file)
In My opinion The Problem is the BK Development Group.

Do you have other ideas?SKMBT_C22021071912031.pdfSKMBT_C22021071912030.pdf

[Synthohol]

Re: Konica C220 print quality problem

needs a new black DV unit.

[tsbservice]

Re: Konica C220 print quality problem

K developer unit almost developer empty.

[mandongo]

Re: Konica C220 print quality problem

Black developing unit 100%.
I had the same issue. After replacing it everything was ok.

[femaster]

Re: Konica C220 print quality problem

Just to add yet another +1 for the K dev unit. Make sure K drum isn't over life as well, replace if it is.

[ferro10]

Re: Konica C220 print quality problem

thank you all

ok then I replace K dev unit

[avecosat]

Re: Konica C220 print quality problem

Also check the clutch of the dev unit K A0EDM20000

[ferro10]

Re: Konica C220 print quality problem

replaced Dev BK now everything works regularly

thank you all

[copyman]

Re: Konica C220 print quality problem

replaced Dev BK now everything works regularly

thank you all

Like other poster mentioned replace black drum as well or you will be back there when the developer dumps again from over life drum shorting out.

A lot of posts on this forum about "4 series dumping developer

[ferro10]

Re: Konica C220 print quality problem

Like other poster mentioned replace black drum as well or you will be back there when the developer dumps again from over life drum shorting out.

A lot of posts on this forum about "4 series dumping developer

For 4-5 days the printer worked regularly.
now the same problem has been presented

Now I try to change only the drum bk? or I have to change the dev bk again together with the drum?

PS: Can it be a toner hopper problem that does not download toner inside the dev bk?

[femaster]

Re: Konica C220 print quality problem

You will need to do both, including K dev unit. Replacing just the K drum won't get your developer back, which is now sitting in your waste toner box, along with the developer from the last dev unit.

[avecosat]

Re: Konica C220 print quality problem

Is the clutch ,I have had the same problem a couple of times

[ferro10]

Re: Konica C220 print quality problem

Is the clutch ,I have had the same problem a couple of times

What clutch are you talking about?

[Zesti]

Re: Konica C220 print quality problem

Which toner are you using? sometimes bad toner also causes developer going in waste. How did you change dv only unit comes as whole... with drum.

[ferro10]

Re: Konica C220 print quality problem

Which toner are you using? sometimes bad toner also causes developer going in waste. How did you change dv only unit comes as whole... with drum.

The black toner is original