Streaking All of a sudden I'm getting lines (never the same spot) across the printed pages. I have less than 10K copies printed. What could it be? (it happens intermittently, however, I have a paper to submit today and can't submit it with streaking lines across the pages!!) Please help me!!!!! I appreciate any help Thanks so much!

try to stop the sheet just before it enters the fuser and see if the marks are on the paper already. if not then it has to be the fuser if they are them you have another issue.

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Most likely a page was scanned with 'white out' (Liquid Paper), still wet on the page. As the page feeds over the scanner, (a narrow strip of glass that runs across the width of the page along the feed path) the wet liquid paper comes off on the glass as a thin line and dries. Thereafter, when copying, the scanner light does not go through the liquid paper streak and the result when printed is a thin vertical line that runs the full length of the page.

If this is your problem: follow the path that the paper travels when sending a fax or making a copy, until you find the scanner (narrow glass strip). Take a clean, soft cloth and a small amount of methylated spirit (or white spirit) and remove the now dried Liquid Paper from the glass. Clean the whole strip ensuring that the glass is left clean and dry.

The drum roller is damaged. You must be careful and spin the cylinder. do not touch the roller. You probably have a line in the roller that causes this issue. Each time i have seen this problem, this was the cause.

Hello sir;The streak line from printing also should be from copy, because the line come from imaging unit, check the meter count if close to or over 50,000 then replace drum and drum blade, it will take care the problem.
The brother printer you need to replace imaging unit( drum unit).

1. Make a copy by using the platen mode and ADF.
2. Send a print from your PC or print out the Counter list from User tools/counter button.
3. Try printing one colour at a time - Black, Cyan, Yellow or Magenta.

If when printing, there is no line across the pages, so you need to clean the optics mirrors and exposure glass.
If the line appears in both 1 and 2 mentioned above, you have the fuser roller or drum damaged.
If the line appears in all colour prints, check the fuser or transfer belt.
If it happens only with one particular colour, check that drum unit.

Good luck and please rate me, thanks.

It dose not have a print head. But it dose have a drum. Are the streaks thin lines? Also, is only part of the copies fixed into the paper ( can you rub part of the copies OFF)? If you can rub off part of the copies - your problem is in the fixing unit. If the lines are fixed and can not be rubbed OFF you most likly need a new drum unit. Good Luck... Either way you will need a service rep. out to fix your problem

Toner issue getting to drum - use gen toner cart.

or Drum blade stuffed (lines are down page fro top to bottom- replace drum assy

Drum has been exposed to light faint or blank across copies repeated 4 times down page - replace drum assy

or upper fuser roller stuffed, down page, smudgy print -  replace fuser

LSU(laser) or boards rarely cause issues

You need to check your glass first to make sure it has no scratches. Then you can run a copy and open door to stop paper in the center of the machine, b4 it goes through fuser. If line is on copy, you have a bad drum. If not your upper fuser roller is bad.

Hey Chuck, Any chance you can post a scan of one of the faulty pages ? This will make it easier to assess the fault. Print off about 10 pages of a page that is affected by the lines. Look at each page and see if you can detect a recurring pattern over any of the pages. If there is a pattern, chances are it is probably the PCU that is marked.