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How to clean corona wire (transfer wire

Copy quality has streaks running through it

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BE VERY CARE FULL use pencil eraser CORONA wire is above the drum transfer and separation wires are on the bottom of the drum.

Posted on Jul 17, 2014

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Posted on Jan 02, 2017

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We have installed in our office a Canon MF8330Cdn printer. Every page that is printed now have a vertical line down the entire length of the page about 1" from the left hand edge of the page. Can you...


Her are somethings to try.
  1. Paper jam
  2. Bad toner cartridge or bad toner.
  3. Clean the corona wire (see the manual)
  4. Drum is wearing out and needs to be replaced.
Sometime a small piece of paper can get jammed in the toner cartridge roller and cause this type of problem.
Also, often this seen with after market toner cartridges or refilled cartridges. Poor quality or old toner will clump inside the cartridge roller wiper blade. Just like dirt under the wiper blade on an auto, it will leave streak on the toner roller that are transfered to the print drum.
Take a look at the toner cartridge first and inspect the long black roller. If the streaks are there then you need a new cartridge.
If no on the roller streaks try to clean the corona wires.
Also inspect the drum to see if has streak. Try wiping drum with soft tissue paper to see if it come off or is etched into drum.
j

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LtCmdr Spock said: "An ancestor of mine maintained, that if you eliminate the impossible, whatever remains, however improbable, must be the truth."

Mar 10, 2011 | Canon Office Equipment & Supplies

3 Answers

When printing, there is a black stripe on the right side of the page. What is causeing this?


If the problem appears when printing a page from the computer, it is most likely a bad drum unit in the machine. The only way to fix this is to replace the drum unit itself. On your model, I believe the drum is part of the toner cartridge.
If the problem appears when you make a copy by placing your original in the feeder but not when printing from the computer, then the problem is dirty optics. The next step in troubleshooting the problem is to make a copy off the glass, bypassing the feeder. If the line is still there, you will have to open up the optics and clean it from the inside. If the problem goes away, there may be something on the "**** glass" of the machine.
The "**** glass" is a small strip of glass to the side of the main piece of glass that you lay your copies on. It will be a strip that is separated from the rest of the glass, and is about 9 inches long by about an inch wide. This should be cleaned really well to insure good copies. Do NOT spray glass cleaner directly onto the glass, as it will run under the glass and cause more problems. Use a high quality lint free towel and spray the cleaner onto the towel. Believe it or not, an old T-Shirt is excellent for this.
I would suggest cleaning all of the glass on the printer on a fairly regular basis, depending on your usage levels. For most home office users, this would be about once a month, for professional usage in a normal office environment, I would clean it about once a week.

Feb 28, 2011 | Brother MFC-7340 All-In-One Laser Printer

1 Answer

Dark, streaked copies


I would first start by cleaning the optic's & cleaning the primary & transfer corona wires and do a general cleaning and that may solve your problem? Good Luck

Sep 10, 2010 | Panasonic FP-7735 Black and White Copier

1 Answer

My canon ir 5570 print quality not set print quality is very light


Hi,
lets try first with technical side!

When was, last time, preventive maintenance service?

You need on regular base:
- clean optics ( beneath copy glass too )
- replace charge corona
- replace transfer corona
- clean/replace paper pick-up, feed and separation rollers.

In most cases the problem will be solved with new transfer corona assy.

Jul 06, 2010 | Canon imageRUNNER 5570 Copier

2 Answers

Canon ir5000 copies have horizonal bands of light copy quality. How do I get even, good quality down the entire page?


The machine probably needs a service paying attention to the development and the cleaning areas. Also, clean or replace the corona wires and check that there is no flat spots on the fuser roller.

Jun 18, 2010 | Canon Office Equipment & Supplies

1 Answer

Looking for a service/repair manual


At minimum, the drum and cleaning blade need replacing - possibly developer as well. I'm sure the optics are dirty, as well as the charge and transfer corona.

Apr 29, 2009 | Office Equipment & Supplies

1 Answer

Black streaks appearing on copies


Well there is not to many things thst would cause that problem,try cleaning the corona wires ,all the mirrors,and check the upper fuser roller.

Dec 04, 2008 | Toshiba 1360 Black and White Copier

1 Answer

Dirty copies.


Does this streaking problem occur when printing (not copying)? If it does then you are probably looking at a consumable issue. Alot of times black streaking is caused by a defective or spent drum. Is your drum new? There is also a blue piece on the drum unit used to clean the corona wire that cleans the drum. Have you tried moving it back and forth several times?

If the problem only happens when copying and the streaks are as bad as you make them out to be then you problem have a bad CIS unit (scans your originals for faxing or copying)

Inkworks
866-381-0541

Nov 21, 2008 | Brother IntelliFAX 4100 Laser Fax

1 Answer

Light copies when duplexing copies


You can try to replace the transfer and sepperation corona wires and the post corona wires. Also, make sure the corona hieghts are set to the door spec's. If that is not good enough try to replace the transfer unit.. Imay need more info.. for any more ideas..

Jun 06, 2008 | Canon NP 6050 Copier

2 Answers

Dirty Edges


I'm sorry to tell you, this is likely a drum issue.

You probably need to have a certified engineer examine the machine.

Have you tried speaking with the local service center to see if they have experienced similar issues? It might be free information.

Erik.

May 13, 2008 | Xerox WorkCentre XD120F Laser Printer

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