Bizhub C454 colored stripe

[cristachecri]

IMG_8716.jpgIMG_8716.jpgIMG_8716.jpg
I have a Bizhub c454 that has a problem. It removes a colored stripe that is visible on the belt and which the belt cleaning blade cannot clean. I replaced the transfer belt with a new one and the defect persists. I mention that he uses only original toners.

[tsbservice]

Re: Bizhub C454 colored stripe

Print or copy?

[cristachecri]

Re: Bizhub C454 colored stripe

both ... both copying and printing

[tsbservice]

Re: Bizhub C454 colored stripe

Did you replaced whole ITB unit or only belt?

[Synthohol]

Re: Bizhub C454 colored stripe

yeah, the cleaning blade is not doing its job from the strip of self calibration patches.
could be the whole cleaning unit clogged or a gear busted.
either way, time for a complete unit and clean the chute between the xfer belt waste exit and the WTB on the left.

[blackcat4866]

Re: Bizhub C454 colored stripe

yeah, the cleaning blade is not doing its job from the strip of self calibration patches.
could be the whole cleaning unit clogged or a gear busted.
either way, time for a complete unit and clean the chute between the xfer belt waste exit and the WTB on the left.

+1 on that. Often the spout will clog up solid & break the drive. The new belt unit will work only until it fills back up with waste toner again. =^..^=

[copyman]

Re: Bizhub C454 colored stripe

What's puzzling me is how a bad belt, blade or broken gears in the TB cleaning unit is going to put a perfectly straight band in same place every time. Just don't make sense. No other marks or toner on the page. There is always a first but I've had bad belts, blades and clogged up TB cleaning units and I've never seen anything like the samples in OP. I've had the calibration pattern not clean off belt but not perfectly straight like that!

[Synthohol]

Re: Bizhub C454 colored stripe

maybe a label chunk under the blade

[copyman]

Re: Bizhub C454 colored stripe

maybe a label chunk under the blade

Yes I've seen that as well and never perfectly straight edges. Plus the OP said he replaced trans belt with new one and still has the band. I will be very surprised if it turns out to be belt, especially since new belt was installed.

[cristachecri]

Re: Bizhub C454 colored stripe

Thank you all for the answers and I'll come back with some clarifications:
1. the itb unit is new and original
2. and with other itb units taken from other equipment, do the same
3. these perfect stripes are sometimes on both sides of the paper and if you remove itb they can also be seen perfectly on the transfer belt
The only problem that I don't understand at all is that if I rotate the transfer belt manually to erase these stripes, IT DOESN'T ERASE THEM! as if the belt cleaning blade is defective, but it's NOT BECAUSE IT'S NEW...
5 . if I still wipe these stripes with a cloth, the equipment works perfectly approx. 500 copies after which these stripes appear again, as if during the copying process it also makes those calibration patches by itself

[copier tech]

Re: Bizhub C454 colored stripe

Thank you all for the answers and I'll come back with some clarifications:
1. the itb unit is new and original
2. and with other itb units taken from other equipment, do the same
3. these perfect stripes are sometimes on both sides of the paper and if you remove itb they can also be seen perfectly on the transfer belt
The only problem that I don't understand at all is that if I rotate the transfer belt manually to erase these stripes, IT DOESN'T ERASE THEM! as if the belt cleaning blade is defective, but it's NOT BECAUSE IT'S NEW...
5 . if I still wipe these stripes with a cloth, the equipment works perfectly approx. 500 copies after which these stripes appear again, as if during the copying process it also makes those calibration patches by itself

The fact that if you rotate the bely by hand & it doesn't clean the line off the belt is odd.

Are you using genuine Konica Minolta toner ?

[copyman]

Re: Bizhub C454 colored stripe

Thank you all for the answers and I'll come back with some clarifications:
1. the itb unit is new and original
2. and with other itb units taken from other equipment, do the same
3. these perfect stripes are sometimes on both sides of the paper and if you remove itb they can also be seen perfectly on the transfer belt
The only problem that I don't understand at all is that if I rotate the transfer belt manually to erase these stripes, IT DOESN'T ERASE THEM! as if the belt cleaning blade is defective, but it's NOT BECAUSE IT'S NEW...
5 . if I still wipe these stripes with a cloth, the equipment works perfectly approx. 500 copies after which these stripes appear again, as if during the copying process it also makes those calibration patches by itself

Thanks for update and your clarifications makes it more of a mystery... Especially
#5 makes it even more strange.

I would start with upgrading the firmware to make it an "E" machine (follow procedure in bulletin). After that would look at a board being bad?

If anything else comes to mind will post later.

[cristachecri]

Re: Bizhub C454 colored stripe

IMG_8718.jpgIMG_8719.jpg

[blackcat4866]

Re: Bizhub C454 colored stripe

What's puzzling me is how a bad belt, blade or broken gears in the TB cleaning unit is going to put a perfectly straight band in same place every time. Just don't make sense. No other marks or toner on the page. There is always a first but I've had bad belts, blades and clogged up TB cleaning units and I've never seen anything like the samples in OP. I've had the calibration pattern not clean off belt but not perfectly straight like that!

It's not that cleaning problem that "creates" that line, it's the patches the laser is writing to calibrate. It's not cleaning the rest of the belt either, it's just a lot more noticeable when there is 300% fill, than when there is < 1% fill. =^..^=

[tulintron]

Re: Bizhub C454 colored stripe

[ATTACH=CONFIG]55809[/ATTACH][ATTACH=CONFIG]55810[/ATTACH]

You need to observe if the system that takes the toner to the Waste Toner Box is working.
If for some reason it is not, the transfer belt will accumulate toner in this part of the cleaning due to the number of patches made while using the printer.


As the ITB has been completely replaced with a new one, I would keep an eye on that part of the system.