Bzzhub c452 baclk IU or Transfer belt?

[konica7022]

most of the time get this smudge stain on top right corner black prints only and mostly on First Print or copy?

is it K IU or transferbelt? the colors come out fine


79141F14.jpg

[JSC]

Re: Bzzhub c452 baclk IU or Transfer belt?

most of the time get this smudge stain on top right corner black prints only and mostly on First Print or copy?

is it K IU or transferbelt? the colors come out fine


[ATTACH=CONFIG]29734[/ATTACH]

Sounds like iU. Try and post an image of the issue, can't see on the one you have posted.

[konica7022]

Re: Bzzhub c452 baclk IU or Transfer belt?

Image enhanced and contrast increased for better view

defect is on the upper right side of the paperCopy of 79141F14.jpg

[femaster]

Re: Bzzhub c452 baclk IU or Transfer belt?

Still a little hard to see on my screen, but with the enhanced image, it looks like it goes across the entire top of the paper. Based on that observation, it doesn't look like the streaking defect goes from the edge of the paper to the other edge of paper, it looks like it cuts off within the "image" area of the page, and if that is the case, I'd look at the image unit first. If it were from edge to edge, then I might start with removing and cleaning the transfer belt cleaning unit.

[allan]

Re: Bzzhub c452 baclk IU or Transfer belt?

Still a little hard to see on my screen, but with the enhanced image, it looks like it goes across the entire top of the paper. Based on that observation, it doesn't look like the streaking defect goes from the edge of the paper to the other edge of paper, it looks like it cuts off within the "image" area of the page, and if that is the case, I'd look at the image unit first. If it were from edge to edge, then I might start with removing and cleaning the transfer belt cleaning unit.

How does that work?

[allan]

Re: Bzzhub c452 baclk IU or Transfer belt?

most of the time get this smudge stain on top right corner black prints only and mostly on First Print or copy?

is it K IU or transferbelt? the colors come out fine

Its faint but looks like cleaning blade failure.
Print half-tones and have a look if the black appears on the CMY prints if it does its the black drum.
A C452 does not use an IU for K, its a DR and a DV unit

[femaster]

Re: Bzzhub c452 baclk IU or Transfer belt?

Its faint but looks like cleaning blade failure.
Print half-tones and have a look if the black appears on the CMY prints if it does its the black drum.
A C452 does not use an IU for K, its a DR and a DV unit

Even though I'm guessing you are referencing the original posters words, I too made the same mistake. You are correct; I'm still trying to get a handle on all these models myself, and convert my terminology from Ricoh to KM... I'm getting there... lol

[hotfuser]

Re: Bzzhub c452 baclk IU or Transfer belt?

Image enhanced and contrast increased for better view

defect is on the upper right side of the paper[ATTACH=CONFIG]29735[/ATTACH]

usually it is the ITB ecspecially if it is only on the first copies.

it is the mylar below the cleaning blade assy that gets damaged.

[HoonBoy]

Re: Bzzhub c452 baclk IU or Transfer belt?

Try adjusting the Transfer Belt-Cleaning Bias first. positive +5

[EarthKmTech]

Re: Bzzhub c452 baclk IU or Transfer belt?

I just install a new transfer belt when I see that. Its the belt cleaning section.

[femaster]

Re: Bzzhub c452 baclk IU or Transfer belt?

How does that work?

How does what work?

[konica7022]

Re: Bzzhub c452 baclk IU or Transfer belt?

Guys sorry for the late reply




"Try adjusting the Transfer Belt-Cleaning Bias first. positive +5"


where in service mode is it ? how to get there ?






"I just install a new transfer belt when I see that. Its the belt cleaning section."


i was thinking the same so i removed the TB opened it it was filled with toner, cleaned it , closed it and installed back in




It is much much better now but i those spots are still there




there is a ring around the Black Drum(see attached picIMG_20150706_001626.jpg) either the black drum has issue or Drum Cleaning balde/developer




my question should i change the drum alone or change the Entire unit along with developer?

[allan]

Re: Bzzhub c452 baclk IU or Transfer belt?

I would just change the drum if there is nothing visibly wrong with dev tank.

[Desert Rat]

Re: Bzzhub c452 baclk IU or Transfer belt?

Check the black Developer unit for excessive dusting. Stop the page before it gets to the transfer and check the paper and transfer belt.
I'm thinking that something is getting dusted with toner.

DR

[EarthKmTech]

Re: Bzzhub c452 baclk IU or Transfer belt?

i don't remember the last time i was able to reuse a dv-612 on a 652 series, they are always visibly worn in the centre by the the time the first drum life is up. I always change the drum and dev a pair now. Some techs/companys may just ignore the poor print quality most noticeable on solid blacks and reuse it but I cannot.

On the other hand the dv-711 on the big 4 series does actually consistantly last life, I dont know what they changed but it made a difference.