[Misc] KM C454e Light spots on blue prints

[andrecopfac]

I have ventured on Konica minolta C280, 454 for at least 7 years, I caught a problem recently.


Some stains in blue color, the blue developer of the developer is uncovered from the developer, even if full, it replaces the developer unit and in the same place it becomes clear, without developer cover.


I notice a significant improvement by changing values in "transfer output fine" to a negative value.


Any suggestion ?


I discarded the imaging unit because I already made an exchange


I changed the revamping unit already. And nothing solves.

[Phil B.]

Re: KM C454e Light spots on blue prints

I have ventured on Konica minolta C280, 454 for at least 7 years, I caught a problem recently.


Some stains in blue color, the blue developer of the developer is uncovered from the developer, even if full, it replaces the developer unit and in the same place it becomes clear, without developer cover.


I notice a significant improvement by changing values in "transfer output fine" to a negative value.


Any suggestion ?


I discarded the imaging unit because I already made an exchange


I changed the revamping unit already. And nothing solves.

are they using crap rd party toner?

whats the life on service parts?

is machine clean?

what is a 'revamping unit'?

[andrecopfac]

[Phil B.]

Re: KM C454e Light spots on blue prints

Are those supplies meant for your box?
Not all dev and toners are compatible between models.
If you are refilling with non compatible even within the brand that could be the problem.

Sent from my SM-G960U using Tapatalk

[BillyCarpenter]

Re: KM C454e Light spots on blue prints


Sounds mighty risky to me. Just saying.....

[tech51]

[tulintron]

[allan]

Re: KM C454e Light spots on blue prints

Clean your mag roller. Got some kind of contaminant on it like oil.

[tulintron]

Re: KM C454e Light spots on blue prints

On your C280 I advise supplies for the C8000 because we have already tested it in our laboratory and I can say.
On your C454 I wouldn't do it again

TSB knows a little about the crazy things we do in the laboratory. Hahaha.

[allan]

Re: KM C454e Light spots on blue prints

On your C280 I advise supplies for the C8000 because we have already tested it in our laboratory and I can say.
On your C454 I wouldn't do it again

TSB knows a little about the crazy things we do in the laboratory. Hahaha.

Wanted to try that. Can get a bunch of DV613K that is stuck in a suppliers stock, that means cost price or less.
What was the ill effect you had on the C454?

End of side track...

[andrecopfac]

[andrecopfac]

Re: KM C454e Light spots on blue prints

Here everything is generic (Image cylinder, charger grid, transfer belt).


I always had a problem with flat and lighter colors.


Yesterday I cleaned the transfer belt rollers, and apparently the problem improved a lot. I noticed that it was very dirty and with 2 a4 sheets on top, before the cleaning blade.


Was that the problem?

[andrecopfac]

[andrecopfac]

[tulintron]

Re: KM C454e Light spots on blue prints

Here everything is generic (Image cylinder, charger grid, transfer belt).


I always had a problem with flat and lighter colors.


Yesterday I cleaned the transfer belt rollers, and apparently the problem improved a lot. I noticed that it was very dirty and with 2 a4 sheets on top, before the cleaning blade.


Was that the problem?