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Thread ID: 102994 2009-09-08 22:22:00 Cleaning a laser printer somebody (208) Press F1
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808091 2009-09-08 22:22:00 I have a Canon LBP-5100 colour laser printer, and if I set it to print in auto duplexing mode, one side of the page will have some residue of toner on it (makes the paper look slightly marbled).

I suspect it's just due to some toner building up or leaking somewhere, and it just needs a bit of a clean. What do I use to clean it, and what should I be looking for? Is there an "excess toner" tray or something that might need to be emptied?
somebody (208)
808092 2009-09-09 02:01:00 Have a look through the online FAQ (support-nz.canon.co.nz) ESP # 31 wainuitech (129)
808093 2009-09-09 02:07:00 Cheers - I'll give it a go but I don't think it's the fixing roller that's at fault.

If I print single-sided, it's fine - it's only if I print in duplex mode that the residue comes out.
somebody (208)
808094 2009-09-09 05:24:00 Very best of luck! Colour lasers have SO many places toner can leak from/to! linw (53)
808095 2009-09-09 09:08:00 Had to do this once with an office Laser Printer at where I worked.

Took out the cartridges (?). Put on a pair of thin rubber gloves & wiped everthing down with toilet paper. At the end I put on clean gloves & did a once over incase I mixed last traces of colour.

Ran a few sheets thro & was ok. Earned me a bottle of wine that did.

Just a bit of useless info!! PJ
Poppa John (284)
808096 2009-09-09 09:11:00 Had to do this once with an office Laser Printer at where I worked.

Took out the cartridges (?). Put on a pair of thin rubber gloves & wiped everthing down with toilet paper. At the end I put on clean gloves & did a once over incase I mixed last traces of colour.

Ran a few sheets thro & was ok. Earned me a bottle of wine that did.

Just a bit of useless info!! PJ

Is there anything in particular I shouldn't touch? Did you use any liquids, or was it just dry toilet paper?
somebody (208)
808097 2009-09-10 06:04:00 Is there anything in particular I shouldn't touch? Did you use any liquids, or was it just dry toilet paper?

I wouldn't use toilet paper, it releases too much fluffy dust . I'd use good quality tissues which are dust free (for sensitive types) .

Don't use the tissues impregnated with some kind of skin cream stuff either (lanolin?), they will probably leave streaky marks in the printing, they don't clean glasses very well either, leaving smears everywhere .

Cheers

Billy 8-{)
Billy T (70)
808098 2009-09-10 06:07:00 I wouldn't use toilet paper, it releases too much fluffy dust . I'd use good quality tissues which are dust free (for sensitive types) .

Don't use the tissues impregnated with some kind of skin cream stuff either (lanolin?), they will probably leave streaky marks in the printing, they don't clean glasses very well either, leaving smears everywhere .

Cheers

Billy 8-{)

Thanks - I'll give it a go .
somebody (208)
808099 2009-09-10 08:28:00 I wouldn't use toilet paper, it releases too much fluffy dust . I'd use good quality tissues which are dust free (for sensitive types) .

Don't use the tissues impregnated with some kind of skin cream stuff either (lanolin?), they will probably leave streaky marks in the printing, they don't clean glasses very well either, leaving smears everywhere .

Cheers

Billy 8-{)

He is right but . . . there were only two women working in the building & I doubt they would have parted with any tissues they had in their handbags !!! PJ
Poppa John (284)
808100 2009-09-11 02:56:00 Are the marks caused by toner? And if so, is it baked onto the page or can you smudge it?

Are you using a recycled or genuine cartridge? I can't quite picture a 'marbled' effect - does it look like very small sprinkles of toner? Often toner 'sprinkle' is associated with a deteriorating cartridge. Are you able to fit a replacement and test it? In my experience replacing the toner cartridge fixes about 90% of print quality problems.

You mentioned it only happens when duplexing - I'm not familiar with that model but you may want to check the area in which the page gets turned over - this is usually in the rear of the printer. If toner has accumulated there then that will also appear on one side of the page when duplexing.

Underneath where the cartridge sits is a long thin black roller which has a spongy texture - this is the transfer charge roller (it may go by a different name on the Canon models). You definitely do not want to get that wet nor touch it with your fingertips (ie grease & moisture), otherwise you are up for a new one.

For cleaning, there is nothing wrong with using Isopropyl alcohol as a cleaner inside printers, so long as you use it sparingly. I also recommend using a Chux cloth rather than tissues or toilet paper. Use a clean paint brush to brush away any excess dust and/or toner before you use any liquids. And of course, unplug the printer before you start working on it.

Andrew
andrew93 (249)
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