Question about HP LaserJet 2420 Printer

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Print quality problem

My printer will print about 20 pages with no problems and then it starts printing black lines and a dark gray background. The cartridge is new, I ran a cleaning cycle 3 times and reinstalled the drivers. Every time I run a cleaning cycle the problem clears up and then comes back after about 20 pages.

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  • CAMPAIGNMGR Feb 15, 2008

    I did a large printing job and now everything I print has a line about 1 1/2 inch from the left edge of the paper...How do you do the cleaning cycle? I have changed my cartridge and wiped out the inside....my computer tech said he was surprised my printer was so clean.....I just can't find the spot where the line is coming from and I don't know where the mirror is....can someone help me please?

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This print quality problem may be a paper problem more than an ink or toner problem.
1. Check that your paper is not damp. (inkjet and laser printers)
2. Is your paper loaded correctly into the paper tray? Most papers are designed to be printed on one side which usually means the shinier side of the paper. (inkjet and laser printers)
3. Is the paper setting correct for the quality of your paper? As an example, high gloss paper printer settings should not be mixed with plain paper. (inkjet and laser printers).

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Posted on Dec 18, 2014

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Hi there sound to me like the toner cartridge is either faulty or leaking. Is it or has it been refilled if so remove cartridge vacuum out the insides of loose toner install brand new toner cartridge then test again. It cannot be the fuser unit as it will have quality problems all the time so try above and I hope it works for you.

Thanks J

Posted on Jan 14, 2008

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Canon irc4580i print dark problem


In the process used printer, will be inevitable printed page by your printer have the bad quality prints. For example: Toner specks, Light image, Vertical line, Dropouts, background, Toner smear, Vertical black line and band, Vertical white line, Background scatter, Black pages, Loose toner, Horizontal stripes, Ghost, Uneven Density, poor fusing ...
The common print quality problem Canon IRC-4580 printer
Currently, The Canon IRC-4580 is the laser printer have high speed, easy to use, friendly for user and printing clear text.
However, we can not avoid the damage of some components of the printer when used.
In this article, I will introduce some basic errors with printing quality problems of Canon IRC-4580 printer and "How to fix it".
After viewed artical, you know:
- How to fix (repair/solve) Vertical line (black or white) in Canon IRC-4580 printer
- How to fix (repair/solve) Poor fusing (loose toner) in Canon IRC-4580 printer
- How to fix (repair/solve) Uneven Density in Canon IRC-4580 printer
- How to fix (repair/solve) Light image in Canon IRC-4580 printer
- How to fix (repair/solve) Ghost in Canon IRC-4580 printer
1. Fix print quality problem "Vertical line" for Canon IRC-4580 printer How to fix print quality problem Vertical line
This plobrem "Vertical line" is usally error of Canon IRC-4580 printer. For this "Vertical line" error, technicians divided into two smaller error are: Vertical black line and band and Vertical white line.
Description:
- Vertical line and band: On the printed image appear some straight thin black vertical.
- Vertical white line: On the printed image appear some white vertical voids.
Error location:
- Surface of the charge roller
- OPC drum
- Cleaning blade
- LSU unit
- Developing roller

Cause of error "Vertical line" on the printed page:

- May be surface of charge roller scratched or dirty by toner powder.
- May be have some grooves on the OPC drum.
- May be cleaning blade is damaged.
- May be LSU window or LSU lense has dirty.
- May be surface of developing roller has scratched.

How to fix(repair) "Vertical black Line and Band" for {{SPkey1}} machine:

- Replace the charge roller of toner cartridge.
- Replace the OCP drum.
- Replace the cleaning blade
If printed page are not improved
- Clean the LSU unit by soft cotton cloth and try to print. If Vertical line is not clear on the printed page you should replace LSU unit.
- Replace new axis developer and try to print
2. Solve print quality problem "Poor fusing (loose toner)" for Canon IRC-4580 printer. How to fix print quality problem loose toner
Description loose toner: Toner is not properly fixed on paper, use to hand rubbing lightly on the printed image toner powder may be stick in hand
Error location: toner cartridge or fuser unit

Cause of error "Dark Image or black" on the printed page:

When toner cartridge is empty. You toner refilled by toner powder ware not compatible. This is makes toner cartridge components demaged and temperature of fuser unit is not enough melt to toner powder

How to fix(repair)"Poor fusing (loose toner)" on the printed page for Canon IRC-4580 printer:

With this error, you should replace toner cartridge or fuser unit to fix it.
3. How to fix print quality problem "Uneven Density" for Canon IRC-4580 printe How to fix print quality problem Uneven Density
Description: The printed page has one half light and one half clear.
Error location: Toner cartridge, transfer roller, springs, doctor blade

Cause of error "Uneven Density":

- The pressure force on the left and right springs of the transfer roller is not even.
- May be toner low also causes this error
- Doctor blade has bent
How to repair error "Uneven Density" on the printed page for Canon IRC-4580 printer:
- Replace springs and transfer roller.
- Toner refill toner cartridge Canon IRC-4580 and reset toner cartridge chip (replace new chip) or replace new genuine toner cartridge.
- Replace doctor blade.
4. How to solve print quality problem "Light image" for Canon IRC-4580 printer How to fix print quality problem light image
Description: The printed image is all light and no Ghost.
Error location: Toner cartridge, Developer, HVPS board

Cause of error "Light image" on the printed page

- Enabled toner save.
- Toner cartridge is low
- OPC drum may be faulty by strong light intensity
- Temperature in room is below than 10*C
- Bad contact caused by the toner dirty between the high voltage terminal in the HVPS and the one in the set
- Abnormalities output from the HVPS

How to fix(repair) error "Light image" on the printed page for Canon IRC-4580 printer:

- Disable toner save by change in printer driver.
- Toner refill toner cartridge Canon IRC-4580 and reset toner cartridge chip (replace new chip) or replace new genuine toner cartridge.
- Replace the OPC drum.
- Replace developer.
- After printer is power on, wait 30 minutes then start printing
- Clean up the contact between the high voltage terminal in the HVPS and the one in the se- Replace the new HVPS if the problems are not solved by 4 away above.
5. How to fix print quality problem "Ghost" for Canon IRC-4580 printer How to fix print quality problem Ghost
Description: Ghost occurs intervals of the OPC drum or transfer roller.
Error location: Toner cartridge, Developer, HVPS board

Cause of error "Light image" on the printed page

- OPC drum has fauty.
- The life of the transfer roller has been expired
- The high voltage terminal is contaminated by toner powder or

How to fix(repair) error "Light image" on the printed page for Canon IRC-4580 printer:

- Replace OPC drum
- Replace transfer roller
- If performed 2 away and the error does not clear, you should replace ganuine toner cartridge .
- Replacce HVPS board.

Oct 29, 2016 | Canon Office Equipment & Supplies

1 Answer

P50 dose not print black color


You might have to run the head clean more than once - if no black at all is printing.. Alternatively, set out a page of all black (background) and print few pages on high print quality setting.

good luck!

Feb 17, 2015 | Epson P50 Inkjet Printer

1 Answer

I have one problem with hp laserjet P4014n printing all paper black. the background is black all but word are showing can someone help me in this


If your background is "Black" it's going to print it all black, change your background color to "Gray" and your machine will then print a gray background instead of black. Also note that when you print a black background your toner life expectancy will be no where your expected yield ratio is. Average yield is 5% for X (X meaning size of cartridge) amount of printed pages. If your printing a black background your utilizing 100% yield coverage. Not sure if this is the answer your looking for. However basic black and white printing with a black background will print the page completely black.

Mar 01, 2011 | Office Equipment & Supplies

1 Answer

Printer full of ink, but will pring pages either blank of with smeared ink.


Follow these steps to check the print settings for your print job.
  1. In the software program you are trying to print from, click File and then click Print . The Print dialog box opens.
  2. Select your product, and then click Properties . The printer Properties dialog box opens.
  3. Click the Printing shortcuts tab.
  4. Under Printing shortcuts , click the type of job you are trying to print.
  5. Review the following options, and then make any necessary changes.
    • Paper size : Make sure that the selected option matches your paper size.
    • Paper type : If one of the options matches your paper type exactly, select that option.
    • Print quality : If you are not satisfied with your printed page quality, or want more densely printed prints, increase the print quality. To print more quickly, or for lighter prints, decrease the print quality.
  6. Click the Features tab.
  7. Check the Print in Grayscale setting
    • If you are trying to print in color, select Color Options , and then make sure that Print in Grayscale is not selected.
    • If you are printing a black and white image, select Print in Grayscale to fix streaking in black areas.
  8. Click OK , and then click OK again to start the print job.
Make sure the printer is loaded with unused white paper.
Open HP Solution Center , then click Settings , then Printer Toolbox .
Select the Services tab.
Click Print PQ (print quality) Diagnostic Page .

Make sure the printer is loaded with unused white paper.
Open HP Solution Center , then click Settings , then Printer Toolbox .
Select the Services tab, then click A- Click Align Printheads or
B- Click Clean Printheads .
C- Click Calibrate Linefeed .

If, after repeated printhead cleaning, the Print Quality Diagnostic page shows white lines across the color blocks in Test Pattern 2 (but no white lines in the gray blocks in Test Pattern 3), one or both of the printheads will have to be replaced. The Print Quality Diagnostic page shows which printhead should be replaced.









Try using the HP Scan Diagnostic Utility in Windows - HP Customer Care (United States - English)

Nov 16, 2010 | HP Officejet Pro L7780 All-In-One InkJet...

1 Answer

I am curious if there is an easy way to print and change positive to negative. What I mean is I want to print a recipe out of a magazine that has a ligt printing on a dark background. Rather than use a ton...


Yes you can but it's called setting the print color to "black and white" only. This way the solid black page will be just a very light gray and uses less ink.

To change the print color to "black and white", go to your printer icon in Control panel and right click on your primary printer (the one that is on default). Next click the button "printing preferences" or click on the tab that says the same. Click on the tab that says paper / quality and choose the "PRINT BLACK OR WHITE" option.

That should help you save your black printing problems.

Let me know if this worked for you ok?

Aug 09, 2010 | Office Equipment & Supplies

2 Answers

Gray background only on odd number pages


your cartridge is defective.. just replaced a new one.

May 17, 2009 | HP LaserJet 1020 Printer

1 Answer

99% of printed page has light grey water mark-as if water-washed


Are you saying it is this problem?

Gray Background Print Quality Defect

Here's another error that might fit the bill:

Vertical Lines Print Quality Defect

If these documents don't quite describe the issue, please post back with more details. Thanks.

Oct 14, 2008 | HP LaserJet 1020 Printer

1 Answer

Test page quality bad


When I scan a document it prints out small. How do I change the size?

Feb 21, 2008 | HP Photosmart C4280 Aio Printer

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