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HP 2840 color laser prints color banding on all sheets

I have a HP 2840 color laser, when pages come out of the printer there is a banding of the different color cartridges, never black but more yellow and magenta than cyan. There are lots of lines, the thickness of the lines appear about as thick as a pencil, at the top of the page and as you go down the page the lines start to disappear. From what I can tell this looks like it started about the time a new image drum was placed in the printer. I have looked at the image drum and can not find any toner on that part. I have printed a supplies status page and it shows that the black has 99% left, Cyan has 8% left, magenta has 8% left and yellow has 64% left.This will happen on just pages printed in black or pages printed in color
Thanks

Jack

Posted by Anonymous on

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5 Related Answers

Mix-it-up

Mix-it-up

  • 832 Answers

SOURCE: Brother Printer Cannot Print in Black

This could be because of several probs: 1. The ink cart is not original and wont let the ink flow, because the valve is not open. 2. There might be air bubbles within the capillaries. 3. The ink is not genuine ink and has pigments in it. Solution: see here, too: http://welcome.solutions.brother.com/bsc/public/us/us/en/faq/faq_top.htm?reg=us&c=us&lang=en&prod=dcp110c_us Insert another ink cart. Use, if possible, the genuine ink cart from brother. Do the cleaning cycle twice. This will extract the air bubbles out of the caps after the second time. If you dont have any success the printhead is clogged and cant be cleaned anymore!

Posted on Sep 17, 2007

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Anonymous

  • 1 Answer

SOURCE: Pages full of toner / toner streaking

First off, this is a comment from a random person who may or may not know ALOT about these printers and toner/printer design in general. All toners are not designed to the same specification. Toner is a combination of plastic "pigment" and iron like shavings to make it magentically attracted to the electrical charges within the unit. Different toners conform to different grades and mainly size of the particles within the blend. The manufacturer doesnt only recommend that you use their toner to make them money, yes of course it makes money, but its because when the unit is designed it is designed to use a certain grade of toner, trust me if you put the non-branded toner vs the branded toner under a microscope you would see quite a difference. Often the non-branded toner is much larger in particle size (obviousely because its cheaper to make at this spec). This causes a variety of issues from excess toner not being cleaned off of developer rollers, IDT rollers, or clogging of toner dispenser tubes in the unit and the micro filters contained at the toner dispenser assy and developer assys. Also as for the issue not changing when switching to dell branded toner - the dispenser tubes within this unit contain up to 500-1000 pages worth of toner, making no change in toner you make immediately visible. Also depending on the damage caused by the previous toner, it may not be able to be fixed until all the components in between the toner and final delivery (drum cart) are replaced. In this case more than likely the toner dispenser assy, all developer assy's, and drum cartridge need to be replaced, and than be sure to stick with factory branded toner :)

Posted on Jul 17, 2008

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Anonymous

  • 1 Answer

SOURCE: Epson Stylus T10: Horizontal bands when printing cyan

With I could post a solutions but I have the same problem! Cyan has horizontal gaps, rest of the colors seem to be ok. I've realigned and cleaned the heads many times.

Posted on Oct 29, 2009

Anonymous

  • 787 Answers

SOURCE: printer does not print magenta and cyan. Change

The print head is clogged.Try unclogging manually.Open the cover and first remove the ink cartridges.Then open the holder and remove the print head.Run hot tap water and put the print head with the nozzles up to stream water.Hold that 5 mins then turn the print head around
with the nozzles down.Hold that for every color of 5 mins.Then put the print head in hot water with the nozzles down.Left it water about 15 mins and then you must very nice to dry.When the print head dry put it in printer and start cleaning.If this not help you need to replace the print head.It's part number is QY6-0049.

Posted on Nov 12, 2009

Anonymous

  • 32 Answers

SOURCE: Xerox Phaser 8560 Color not correct

the problem is not with the printer but it is with the ink that might be damaged, this is located inside the printer

Posted on Dec 01, 2009

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check yellow cartridge to see if toner seal tab has been pulled out

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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.. ">

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Hi there , I have a HP 2840 Color Laser Printer that is saying "Replace Supplies " . All cartridges are showing "empty" besides yellow . I only wish to replace the black cartridge and...


There is no option like what you are expecting. But now a days all chips are avil in market simply replace the chip & cut the cost...

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My boss want to replace the black ink cartridge for one that prints color. Can this be done with the HP 12-a cartridges? HP Laser jet 1022


Unfortunately laser printers don't work this way. The laserjet 1022 was designed for black and white prints only. In order to do color printing with a laser printer you will need to purchase one that is designed to print in color. The laser printers work a bit differently than the inkjets - the laser printers have 4 toner cartridges, one each for Cyan, Magenta, Yellow, and Black, that work together to print a full color page. With the old inkjets you could just replace a black cartridge with a color one.

So, short answer: Sorry but no you can't make a laserjet 1022 print in color. :)

I would recommend looking at an entry level color laser printer from hp, such as the CP2025 (http://h10010.www1.hp.com/wwpc/us/en/sm/WF25a/18972-18972-3328060-15077-236268-3673580.html) if you are looking into purchasing a color laserjet.

Hope this helps

Please rate this post, thanks!

Mar 09, 2011 | HP 645A Magenta Toner Cartridge (C9733A)...

1 Answer

Hp color laserjet 2840 - prints one page in color, next in black & white. Yellow ink cartridge light blinking. Says "replace supply, using black only". Yellow wasn't showing as low previously.


Follow each of these steps until the problem is resolved:

Print a printer self-test by holding the power button down with a pencil and opening and closing the top cover four times.
Check the nozzle self-test pattern in the self-test print out. If one or more of the solid rectangular areas are missing, an electrical contact problem may be present.
Remove and then reinsert the print cartridge(s) into the printer.
Print the document.
If the problem persists, follow the steps listed above for cleaning the print cartridges and print cartridge cradle.
Try printing again. If the problem continues, replace the print cartridges.

http://www.fixya.com/support/t5717191-hp_deskjet_6540_printer_yellow_light

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2 Answers

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1 Answer

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Turn the printer off and turn it back on again and see if happens now.

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