Streaks on paper/card stock

[kd0uni]

When I print greeting cards, the printer places a vertical (roller?) streak on the paper about 1/2" wide.  Sometimes it is faint, sometimes smudged in appearance and a little darker, but always black.  We have removed the toner cartridges and have found some stray graphite in several places, but strongly suspect we need to clean the rollers and cannot find a way to access all of them.  This problem just started and we have not made any changes to it.  We used the printer a month or more ago, and it was fine then.

[SHThompson]

The drum in the toner cartridge cleans itself as it rotates so if that's what you're trying to clean it won't do you any good to wipe it down.

If you move the shutter on the black cartridge so you can see the drum and it has a black streak on it then you need to replace it.

Your problem almost has to be the black toner cartridge, to prove it you need to go into the diagnostic menu of the printer and select disable cartridge check.

When you select the disable cartridge check option you can then move the cartridges to different slots and print, so you can swap the black and the scient owners and print a test page.

With the cartridges swapped if you still get a black screen is definitely the black cartridge.

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[bluI_1528]

Are these greeting cards preprinted, or have images/text on them already? A lot of times this ink can't handle the high tempurature of the fuser.

One thing you can try to verify this is a half self test.

1. Place a piece of paper in the manual feed tray and print a test page. As the paper is fed into the printer either turn the printer off or open a tray to stop the printing.

2. Pull the paper out carefully, as the images are not fused onto the paper.

3. Can you see the line on the paper? If so it may be a the toner cartridge or the transfer roller. You can check by looking at the toner cartridge drum, is the line there?

If nothing is seen in either place it is the fuser.

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[kd0uni]

I very much appreciate your time and effort in solving this problem for me.  We had a family emergency and I have not had time to prove out the solution yet, but should be able to do that in a day or two.

Thanks again for your help.

[kd0uni]

Thanks so much for your help.  Please see my response to other technician that answered my post.