Tip & How-To about Office Equipment & Supplies

Presentation of a laser printer

The laser printer reproduced using the image of points it receives from the PC. With the laser dots are smaller and the definition is better.
1: Drum Ionizer 2: Toner 3: Oscillating mirror 4: Laser 5: Drum 6: Ionizer

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poor print quality


The "ghost" image is "burned" onto the drum.

A laser printer is supposed to charge specific "dots" on the drum, and the toner-ink is supposed to stick only to those "dots", the paper is pressed against the drum, and then the "fuser" uses heat to "melt" the toner-ink onto the paper, to produce the printed page.

You need to replace the drum.

Apr 07, 2010 | Konica Minolta magicolor 2430 DL Laser...

1 Answer

MFC-7420 GHOST IMAGES


sounds like a bad drumbur also can be caused by a defective fuser.

Jan 16, 2009 | HP LaserJet 1020 Printer

2 Answers

black spots on my documents Brother HL-1440


Stray dots (on a vertical imaginary line on the page) may not require an expensive drum replacement. In my situation, I simply followed these steps:
(1) Open up the printer, remove the toner-cartridge/drum assembly, and remove the toner cartridge from the drum.
(2) For purposes of reference, place (and center) a sample page of the "offending" output in the bottom of the drum housing, lining up the dots so that the page is turned the way it would have fed through the printer, placing the page generally in front of the shiny green roller surface. Loo, for where any matching black dot or other thing might be sitting on that surface.
(3) Gently roll the green surface's roller with its outside end pegs (without touching the green surface) if and until such a matching dot (or dots) can be found. (Multiple dots might appear along other imaginary verticals on the page, which is to say, additional vertical striping is occurring because there are more instances of "items/dots/garbage" arrayed across the roller on the horizontal, to produce repeat images down the page as the page feeds through the printer.)
(4) Take a Q-tip and very, very, very gently "polish" away the dot(s) you found on the green roller. (I ended up just dabbing the dot I found--which had consistently left a trail of three dots down my pages, in different locations because of the distance the roller traveled relative to the page size--using the absolute least amount moisture to remove it.)
(5) Clean the drum's corona wire by moving the blue plastic slider back and forth, and leave the slider at the far left point.
(6) Reassemble the toner cartridge and the drum and place the assembly back in the printer.

(7) Test.
Worked great for me. Done in around five minutes. No cost, except for the negligible cost of a Q-tip. No time waiting for a new drum to show up, etc.

Oct 17, 2007 | Brother HL 1440 Laser Printer

5 Answers

Printing CMYK dots twice on every print


Hi, As it's printing two little strips (like a 1/4inch) of CMYK dots (one of each color all you need to check the toner cartridge drum, try to wipe the toner drum with a damp cloth on each color cartridge. Secondly check the fuser assembly drum if it has any mark on the drum, try to use a mild isopropyle alchohol to wipe the dirt mark them try printing. this will resolve the issue. if still issue persists then change the color cartridge one by one. This will definitely resolve the issue.

Oct 05, 2007 | Dell 3100cn Laser Printer

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