Toshiba 2820c vertical banding

[Alastair38]

I was getting speckling near the edges on solid black prints, I took out the drum and found tiny spots of toner stuck to it, so I cleaned it, and that fixed that problem, but it is now printing with large vertical bands down the prints, perpendicular to the feed, which is worse than the speckling. The bands show almost blue, they're quite wide, about 2 inches wide, I'd almost say they were repeating, but they're hard to see clearly. And solid blocks of cyan and black print clear. Black and white prints are the worst. I've attached a photo of a couple of prints, the yellowish one has almost dirtyish bands of cyan running down it, any ideas? I've cleaned the slit glass. thanks

band in black and white photo.jpgbluish vertical bands.jpg

[clint@clintsimonsen.com]

Re: Toshiba 2820c vertical banding

Could be light affected, may just need to be left overnight, could be main charge dirty, check the dev blade. Also you might have to pull the laser out and clean inside.


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[bruce 49dcs]

Re: Toshiba 2820c vertical banding

I would try to figure out the copy count on all 4 drums since the black drum was crusted with toner means they have been in there a long time
after 75k copies they get real bad

[Alastair38]

Re: Toshiba 2820c vertical banding

I would try to figure out the copy count on all 4 drums since the black drum was crusted with toner means they have been in there a long time
after 75k copies they get real bad

the black drum is over, at 132000 counts, and the other 3 are at 90,000, so I guess they could all use replacing.

[bruce 49dcs]

Re: Toshiba 2820c vertical banding

for sure they are way over you can tell the customer they did well and got more for the buck but now its time to replace them they cost about 25 bucks for the drum and blade and I charge 160 for the kit X 4 is 640 and to make them feel better I give them free labor the parts have a great profit and the free labor makes you a hero its a win win

[clint@clintsimonsen.com]

Re: Toshiba 2820c vertical banding

If you haven't got a relationship with a dealer You can get drums and blades from KATUN RTS imaging I'm sure Fleming will ship to NZ drums are about $45 AUD blades around $14. If replacing parts I'd do the black dev kit and black drum the dev will door more copies but at 120k might as well do a proper job going by samples best do it right.

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[Alastair38]

Re: Toshiba 2820c vertical banding

If you haven't got a relationship with a dealer You can get drums and blades from KATUN RTS imaging I'm sure Fleming will ship to NZ drums are about $45 AUD blades around $14. If replacing parts I'd do the black dev kit and black drum the dev will door more copies but at 120k might as well do a proper job going by samples best do it right.

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thanks for that.

[blackcat4866]

Re: Toshiba 2820c vertical banding

Try this test pattern. It will tell me more:

[Alastair38]

Re: Toshiba 2820c vertical banding

Try this test pattern. It will tell me more:

the banding has settled down a bit this morning, it's still there slightly, but there's not much in it, instead I'm getting streaks of cyan right from the edge of the paper across the prints, and I think a faint tinge of cyan background across the whole sheet, making it look slightly dirty. It's noticable on solid yellow which prints dirty. The scanner had problems picking up the 10% printouts, so I photo-ed those ones.

[Alastair38]

Re: Toshiba 2820c vertical banding

I will replace the drums, but I could use a quick fix. Toshiba in NZ don't sell them anymore so I will have to get from Australia. I printed about 30 pages this afternoon and they were clear, the images looked crisp and fine. Then the blue streaks of toner started again. I've attached an image just of the toner streaks. I've cleaned the transfer belt blade, and the drum and the developer blade. blue streaks.jpg

[clint@clintsimonsen.com]

Re: Toshiba 2820c vertical banding

You can use the ODFC25 Drums in this model (drums for 40 series)
A lot of Aussie techs use those so they only have to carry one version.

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[Alastair38]

Re: Toshiba 2820c vertical banding

You can use the ODFC25 Drums in this model (drums for 40 series)
A lot of Aussie techs use those so they only have to carry one version.

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thanks, that's helpful. I'm pretty sure I've worked out the problem, which I shouldn't have overlooked, the foam pads have disintegrated on the cyan and k drum casings, I'll try and get more of those now and fix them.

[blackcat4866]

Re: Toshiba 2820c vertical banding

I can't really tell if it's cyan drum not cleaning or the primary transfer belt not cleaning. The photos do help. You should be able to see this not-cleaning issue without much difficulty on the belt or drum.

Developing is not perfect, but not horrible either. =^..^=

Something just occurred to me. If you're not that familiar with the Masherbrum series you might not know that it isn't easy to align the transfer belt cleaner onto the rear post. The trick is to remove the yellow imaging unit, then shine a flashlight in through the opening. Then you can align the cleaning unit onto the rear post amd front "C" shaped receiver. That can account for a recent transfer belt not cleaning issue.

[Alastair38]

Re: Toshiba 2820c vertical banding

I can't really tell if it's cyan drum not cleaning or the primary transfer belt not cleaning. The photos do help. You should be able to see this not-cleaning issue without much difficulty on the belt or drum.

Developing is not perfect, but not horrible either. =^..^=

Something just occurred to me. If you're not that familiar with the Masherbrum series you might not know that it isn't easy to align the transfer belt cleaner onto the rear post. The trick is to remove the yellow imaging unit, then shine a flashlight in through the opening. Then you can align the cleaning unit onto the rear post amd front "C" shaped receiver. That can account for a recent transfer belt not cleaning issue.

thanks for that, yes, I spent some considerable time aligning that cleaning unit onto the rear post, shining a torch up there, I got it in the end. I'm pretty sure those foam pads will be the problem, the cyan drum was a bit messy too, I'll update everything in the near future, although the developer has only done 43000 so should have some life left.

I'll report back when I get those foam pads to say if they fixed it.

[SalesServiceGuy]

Re: Toshiba 2820c vertical banding

Toshiba Tec Japan officially discontinued all technical support, part supply and toner production for this copier on March 02 2019.

Time to put a bullet in the copier and move on.