C360 horizontal magenta line on the edge

[madu132]

Hi Guys

I have issue with c360, there is horizontal magenta line on the bottom when printing color as in attachment, but when print b/w there is no line.

check and try to swap the drum to other color but still same. Any idea what could causing this?


WhatsApp Image 2020-08-14 at 11.47.35.jpg

[robinsonad86]

Re: C360 horizontal magenta line on the edge

Potentially magenta dev unit, more than likely transfer belt

[Albonline]

Re: C360 horizontal magenta line on the edge

Hi Guys

I have issue with c360, there is horizontal magenta line on the bottom when printing color as in attachment, but when print b/w there is no line.

check and try to swap the drum to other color but still same. Any idea what could causing this?





[ATTACH=CONFIG]46468[/ATTACH]

print head, if image is printed in non image area. can't really tell from the scans

[Synthohol]

Re: C360 horizontal magenta line on the edge

from what i can see on the tiny tiny sample is the T\belt isnt cleaning on the edge.
its either the belt or the gears that drive the belt cleaning unit.

[Rugggero]

Re: C360 horizontal magenta line on the edge

I would try to control the laser, first with the rod supplied, then disassembling it.

[femaster]

Re: C360 horizontal magenta line on the edge

How does the magenta drum look? I've had something similar with a bad drum. Swap magenta drum with cyan and see if you get cyan on the bottom instead of magenta.

EDIT: Never mind, somehow missed the part that stated the drum swap had already been tried.

Next step would be verify the transfer belt and belt cleaning unit. Probably wouldn't hurt to make sure that there isn't a build-up of toner/developer on that end of the development unit for some reason also.

[tsbservice]

Re: C360 horizontal magenta line on the edge

...
check and try to swap the drum to other color but still same. Any idea what could causing this?


[ATTACH=CONFIG]46468[/ATTACH]

How does the magenta drum look? I've had something similar with a bad drum. Swap magenta drum with cyan and see if you get cyan on the bottom instead of magenta.

Looks to me like OP already swapped drums

[femaster]

Re: C360 horizontal magenta line on the edge

Looks to me like OP already swapped drums

Thanks for that. Not sure how I missed that!

[Phil B.]

Re: C360 horizontal magenta line on the edge

I would try to control the laser, first with the rod supplied, then disassembling it.

control or CLEAN?

[fornerm]

Re: C360 horizontal magenta line on the edge

Hello,
Look my early Post, i had an Cyan Line on the edge......
Is this the same failure ?
I cant see your exemble pictures, its to small.

https://www.copytechnet.com/forums/konica-minolta/107724-c284e-grinding-track-itb-drums.html?highlight=#post509415

mfg

[Rugggero]

Re: C360 horizontal magenta line on the edge

control or CLEAN?

Clean and check the difference between before and after.

[fatduke]

Re: C360 horizontal magenta line on the edge

Potentially magenta dev unit, more than likely transfer belt

I agree, also transfer roller.

[Phil B.]

Re: C360 horizontal magenta line on the edge

Clean and check the difference between before and after.

so you just confused CONTROL with clean?

[Synaux]

Re: C360 horizontal magenta line on the edge

from what i can see on the tiny tiny sample is the T\belt isnt cleaning on the edge.
its either the belt or the gears that drive the belt cleaning unit.

Yup, looks like the M roller inside the belt is lopsided--note the lightness on the top...

Either that or a lack of voltage to the M unit itself?

I agree, also transfer roller.

No offense, but that does not make sense. How could a transfer roller make an impression of only one color in what looks like high saturation in one spot--and--outside the print area? I guarantee you that the tranf roller will have magenta build up on the edge, but I fail to understand how that can possibly be the the cause. That said, the K print would probably clean up with a new (or cleaned) transfer roller.

I would like to see some scanned images of some 12x18" stock (or anything 12"). Gradation, halftone, and halftone at 50% out of bypass with the guides fully extended and the stock pushed to the user-side of the machine at its limit (might run slightly skewed, but who cares).