Question about HP LaserJet 4 plus Printer

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Snowflake pattern on print jobs

I have an HP Laserjet 4 plus and my print jobs have a snowfalke pattern on them. I looked at the toner cartridge and saw that the drum had the snowflake pattern marks. I replaced the cartridge and all was good. After a month of printing the snowflake patterns are on the drum cylinder again. Do you think that there is something on the fuser or rollers that is making the pattern on the drum? Any ideas on how to resolve this issue? Sam

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I would suggest taking a can of air and spraying the reflective glass that is under the scanner assembly front area. You will need to remove the top cover (three screws: one in front and two in back. Once screws out, open manual feed tray, then take a flat blade screwdriver to release two clips at top front of cover.). You must toggle the toner cartridge lever (metal piece that sits just to the left of the scanner assembly) and then spray up under the scanner front area). Also, I would replace the Transfer Roller. When you remove the toner, you will see a black roller that sits just under where the toner normally positions at the bottom.

Posted on Apr 25, 2007


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Hp1020 printing grey backgroud

The most common reason that laserjet's get grey background print-outs is that the toner cartridge's drum has gone bad. I have seen it many, many times on new and old cartridges and the only way to fix it is to buy a new toner cartridge. Sorry for the bad news.
Good Luck!
Rich Lilja

Oct 27, 2012 | HP LaserJet 4 plus Printer

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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

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Replaced toner cartridge 3 times (HP brand) but still get dark pages and the roller on toner cartridge is totally black with carbon. Is it something other than the 3 toner cartridges??

The cartridges are in a unit called a print drum. When the printer is printing, the drum is scanned with a laser which electrically charges certain parts of it. Then when it spins past the toner, the toner is statically attracted to the drum, and sticks to it only in certain areas. When the (statically charged) paper is run by the drum, the drum is wiped by another laser, removing its static charge, and the toner flies off of it and onto the paper, where it is then baked by a heat lamp.

During normal useage, not all of the toner comes off of the drum, there is a little waste. After a certain amount of time, the drum will need to be replaced. You can contact the same place you purchased the toner to get a new drum, and that will most likely solve your problem.

Jun 15, 2011 | HP LaserJet 4 plus Printer

1 Answer

I have an HP Laserjet 4, quite old, and it has developed a very prominent streak almost straight down the middle of the page. Staples told me to clean the drum, but my manual doesn't even seem to mention...

Put paper in the manual feed tray. That's the pull down door in the front.
Print something. As the page gets fed 3/4 of the way into the printer, open the top cover. Pull out the toner. Look down at the paper. If you see the prominent streak, you probably have a bad toner cartridge. If the streak is not there, check the fuser. One of the rollers is bad.

While you have the toner in your hand, you should see a flap that is the entire length of the cartridge.
Put you thumb on the flap and pull it down. You will now be looking at the drum.
If you see the prominent streak, that's your problem. See if you can clean it with a soft lint free dry cloth. If the streak comes back, the rubber cleaning blade is probably bad. Replace the toner cartridge.

Feb 07, 2011 | HP LaserJet 4 plus Printer

1 Answer

I am getting and old print job overt he top of my new print outs why is the old print job staying in memory

try changing the cartridge
it could be that the image is still on the drum and the drum is in the cartridge

Dec 02, 2009 | HP LaserJet 4 plus Printer

1 Answer



Based on what you described the problem may be with your toner cartridge. The green photosensitve drum has become faulty somehow. I'd suggest trying another toner cartridge, it's the easiest way to determine what the problem is.

Another part that could be at fault is the scanner. It "etches' the image to the drum inside the cartridge, so if the scanner is bad it can make it look as if the toner cartridge is bad.

Jun 29, 2009 | HP LaserJet 4 plus Printer

3 Answers

HP Laserjet 2015 dn

It means that the printer is in READY State.

Control panel
The printer control panel is comprised of six lights and two buttons. The lights produce patterns that
identify the printer status.
1 Jam light: Indicates that there is a jam in the printer.
2 Toner light: When the print cartridge is low, the Toner light illuminates. When the print cartridge is out of the printer,
the Toner light blinks.
3 Paper out light: Indicates that the printer is out of paper.
4 Attention light: Indicates that the print-cartridge door is open or other errors exist.
5 Ready light: Indicates that the printer is ready to print.
6 Go button and light: Initiates action or indicates status.
7 Cancel button: To cancel the print job that is currently printing, press the Cancel button.

Sep 08, 2008 | HP LaserJet P2015dn Printer

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Grey band on left side of printed page.

replace toner drum or replace cartridge

Mar 19, 2008 | HP LaserJet 4 plus Printer

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Printing result pour

Is the cartridge gen HP cause this will most likely be your problem if not slight slight chance it could be fuser but I would recomment replace toner/drum cartridge

Dec 01, 2007 | HP LaserJet 4 plus Printer

1 Answer

Printing pages dark

The cartridge itself needs to be replaced, threre is a blade called the drum cleaning blade which scrapes toner off the Drum(blue roller) it is not cleaning the excess toner.


Oct 16, 2007 | HP LaserJet 4 plus Printer

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