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HP laser jet 2840: faint lines across page, top to bottom every inch, when printing color or Black only. all cartridges and drum show same life left - 74%

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Black stripe when printing from hp laserjet 2840


Cartridge faulty...
Two ways you can find out the faulty cartridge.
1. Remove each cartridge, just flip the drum shutter & chk for any toner bands appears on drum surface.. if found replace that cartridge..
2. Go to the paint. create four colored page as shown, print & verify which colored print mixed with bads.. replace that cartrdige.. ">

Mar 01, 2014 | HP LaserJet 2840 All-In-One Printer

2 Answers

MY HP LaserJet 2840 has a brand new Toner cartridge. Now it won't print at all and we are getting a "OPC at end of life" prompt. What does this mean?


Imaging drum reach 20,000 (black only) or 5,000 (color), replace the image drum.

Supplies life
The life of the imaging drum depends on the number of black-only or color pages that print jobs
require. Imaging-drum life is also affected each time the device calibrates because calibrating causes the imaging drum to rotate. Imaging-drum life is measured in terms of number of rotations rather than number of pages printed.
The type and length of print jobs also affects drum life. A series of short print jobs uses more drum
life than an equivalent number of pages printed in a single large job. To extend drum life, print
multiple copies of a print job at one time rather than sending the same job to the device multiple times.
The life of a print cartridge depends on the amount of toner that print jobs require. When printing text at 5% coverage, black print cartridges last an average of 5,000 pages and cyan, magenta, and
yellow print cartridges last an average of 2,000 pages. High-capacity cyan, magenta, and yellow print cartridges last an average of 4,000 pages. (A typical business letter has 5% coverage.)

Aug 18, 2011 | HP LaserJet 2840 Printer

2 Answers

HP Laserjet 2840 asked for drum replacment afther only 5300 pages but should make 20000. Prits where still perfect but now it refuses to print. Any solutions how to keep using the drum?


Check online for refill instructions and where to buy the chip to replace on the drum, most of the drums today have little chips to replace that tell the printer when they are used up, even when there's still life in them.

Dec 24, 2009 | HP LaserJet 2840 Printer

1 Answer

Printing with a black horizontal line across bottom of the page


Wipe the cartridge.Use cotton but dont put water on it only cotton.if you have deiones water its good to use.

May 20, 2009 | HP LaserJet 5550DN Printer

2 Answers

Printer is printing black lines across all print jobs


Every print job, copy, and fax have the solid black line across the pages. I have changed the drum and the cartridge and even tried cleaning mode. Please help!!! I have a HP Laser Jet 2840 All in One

Mar 24, 2009 | Office Equipment & Supplies

2 Answers

HP 2600N PRINTS A BLACK LINE VERTICALLY ACROSS THE PAGE (FROM TOP TO BOTTOM) RIGHT IN THE MIDDLE EVERYTIME YOU PRINT SOMETHING . WHAT COULD THIS BE? I HAVE CLEANED EVERY DRUM, THE FILM ETC AND IT KEEPS...


You either have a defective black toner, a bad fuser or transfer belt. From my experence it is usually a bad toner cartridge. After you print a couple of pages, pull the black toner and see if there is anything on the drum. If there is try shaking the toner, sometimes toner does like dirt and clogs up. If you still have problem you will have to try another toner. I know that is not cheep, but I don't know any other way.

Mar 02, 2009 | HP Color LaserJet 2600n Printer

2 Answers

HP 2840 Prints Blank Pages


Black is used on all prints. Did you pull the tape on the new cartridge?

Jan 13, 2009 | HP LaserJet 2840 All-In-One Printer

1 Answer

Won't print in color


All cartridges are new...report shows 0 pages for yellow left yet all others added at the same time show thousands of pages left. Everything printed is in black with no color. BTW: I have 3,000 pages left with black cartridge and the display says I need black.

What should I do?

Nov 20, 2008 | HP LaserJet 2840 All-In-One Printer

1 Answer

I am getting a faint line all down the page


Most likely you have a defective black toner cartridge. Open the front shutter on the black toner and look at the drum. If you see the drum has toner on it corresponding to the line down the page, you found the problem. If you can't see anything on the drum try printing a page and then interrupting the printout while the page is still in the printer. If you see the line on the page before it goes through the fuser, (the last roller thing on the top of the printer) then it still is the toner cartridge. If it occurs only after the fuser then it, the fuser, is at fault.

Jun 29, 2008 | HP Color LaserJet 2600n Printer

1 Answer

Consistent, faded and streaking vertical lines across entire page, from top to bottom.


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

Oct 25, 2007 | Samsung ML 2010 Laser Printer

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