Question about Xerox Phaser 8550/DP Thermal Printer

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Blurry images Print quality has been getting worse and I'm told it may be an oil seal leak at the drum.  Is this a common problem?  I've only printed about 38,000 copies total and have replaced maintenance kit twice.  In about ten copies I may get 1 or 2 that are readable, and can no longer print pictures.

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Rick Kasper

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Yeah , that is most likely the problem. If ou remove the right side cover , there is an encoder on the end of the drum motor shaft, It becomes contaminated with the silicon from the maintenance kit.
Fixing it requires you to pop the encoder off and flush it well with alcohol. It is unlikely is has failed, but when dirty is causes the drum to turn at the wrong speed.

Posted on Mar 28, 2009

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Phaser 8560 printing fuzzy. Machine menu screen illuminated but no display can not access onboard help due to screen failure


The cause of the blurry prints is that oil, from the maintenance kit, has leaked onto the drum encoder assembly. The drum encoder is responisble for position the Y-Axis or vertical direction of the print. The oil on the encoder is making the printer incorrectly position the drum as the pinthead is spray ink onto it, thus you get a blurry print. If you look closely, letters probably have a downward jag to them.
There are two ways to fix this. The cheapest and easiest method is to remove the right side cover, then the fan on the right. Behind that fan is the drum encoder wheel. Using a lint free cloth and isopropyl alchol (preferably 99%), clean all the oil off of the sensor disc. This method might work for a while, but the problem will ussually come back.

The second method would be to just replace the drum assembly. The drum assembly comes with a new encoder disc.

The display (menu screen) can easily be fixed by replacing the control panel (part# 848K06552). It's pretty simple to replace w/ no tools required. Here is video to show you how.


Aug 24, 2011 | Xerox Phaser 8560MFP Laser Printer

1 Answer

My laserjet printer started making load noises and no longer prints-the last thing printed only printed the top 3inches and then was all black, it then stopped working altogether


Use the following checklist to ensure that the print cartridge is still operable:
  • Ensure that the print cartridge is seated properly.
  • Inspect the print cartridge for remaining toner.
  • Check the expiration date stamped on the print cartridge box.
  • Check the print cartridge to see if it has been disassembled or refilled.
  • Inspect the print cartridge to see if toner is leaking through worn seals.
  • Check the surface of the photosensitive drum in the print cartridge to see if it has been damaged or scratched. Touching the drum contaminates the photosensitive surface and can cause spotting and image defects.
  • Blurred areas on printed pages indicate that the photosensitive drum in the print cartridge has been overexposed to light. Because overexposure to light causes permanent damage to the photosensitive drum, the cartridge should be replaced.

The HP LaserJet 1100 series printer cannot print to the edge of the paper, to get the image to fit into this printable area, slightly reduce the size of the image.

try this and let me know, also check the status of the toner.

mail me- [email protected]

Jan 12, 2011 | HP LaserJet 1200 Printer

1 Answer

PRINT IS BLURRY


The printed output is fuzzy, blurry, or grainy, or the edges of objects in the images are jagged. Solution Follow these steps until the issue is resolved. Step one: Check your paper
  • Many papers have printing and non-printing sides. Load the paper with the printing side down.
  • Use the correct paper type for the project. For everyday documents, plain paper works well. For documents with dense printing, such as high-contrast graphics or photographs, use HP Advanced paper for the best results.
  • If these steps do not help, try a different paper. Ink might not bleed as easily on heavier paper. Paper that does not accept ink well is also prone to bleeding and smearing. HP designs its inks and papers to work together.
Step two: Check the settings
  1. In the program being used for printing, click File , and then click Print . The Print window opens.
  2. Make sure the appropriate product is selected, and then click Preferences or Properties . The Preferences/Properties window opens.
  3. Click the Printing Shortcuts tab. Consider modifying some or all of the options in the Printing Shortcuts menu to increase print quality.
    • Print quality : If the quality of the printouts is not acceptable, try increasing the print quality. To print more quickly, try decreasing the print quality.
    • Paper type : If one of the options matches the paper type exactly, select it instead of Automatic .
    • Paper size : Make sure that this option matches the paper loaded in the product.
    To see additional options, click the Advanced tab, and then click Advanced Features . The Advanced Features window opens. Consider changing the following option: Ink volume : Adjust the amount of ink that prints on a page. For lighter images (less ink), drag the slider to the left. For darker images (more ink), drag the slider to the right. The lighter the ink volume, the more quickly the printout dries.
Step three: Check image resolution Make sure that the image file has enough resolution for the size of the printed picture. Although many photo applications can enlarge an image or part of an image to any size, eventually the individual pixels become visible and the whole image looks blurry. Here are some general guidelines for image file resolutions:
  • 94 pixels per cm (240 pixels per inch) for images to print on smaller format photo paper, such as 10 x 15 cm (4 x 6 inch)
  • 117 pixels per cm (300 pixels per inch) or higher for larger format photo papers
  • Lower resolutions might produce acceptable images when printed on rough-textured paper
Step four: Align the cartridges If the previous steps have not improved the appearance of the printout, align the cartridges. See the user guide for alignment instructions. PSC 1600 User guide: http://h10032.www1.hp.com/ctg/Manual/c00276605.pdf Click on this link or copy and paste the complete link into your browser.
If I could be of further assistance, let me know. If this helps or solves the issue, please rate it.
Thanks, Joe

I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_8b8c2cd6ce148309

Jun 11, 2009 | HP PSC 1600 InkJet Printer

1 Answer

Bad photo quality after changing drum


your laser printer
1) print color quality is now distorted that means print skew (technician called)
2) print tint means the print color not enough density,
3) print mottle means print dirty
you may try
1) print distorted--- find out the skew adjustment from your printer manu, it is adjust the image before transfer to the drum.
2) print skew could be happened when the drum replace install not very accurate, so install it more carefully.
3) print tint---you may increase print density from the manu, not fix,
4) print tint---the toner caridge near life cycle or using the less compatible toner. so you have change the quality toner or cartridge (if near life cycle) to improve quality photo print
5)print mottle---toner quality ? or cartridge near life cycle also cause print dirty paper,

Feb 08, 2009 | Konica Minolta magicolor 2300DL 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

1 Answer

Copy quality is poor. Replace toner, drum and transformer?


when you say the quality of the text is poor I am assuming that your are describing the line print

FIX

IF FUZZY remove corona wire and clean with q tip diped in alcohol

If IMAGE OFFSET check fuser rollers emove pad and ad fuser oil

IF copies lite remove print cartridge and shake back and forth to get toner distributed
also examine photoreceptor sounds the shutter is not closing and causing image distortment




Jan 05, 2009 | Sharp AL 1631 Copier

1 Answer

Phaser 8560 magenta ink not transfering to paper


Hi jbasset285: Your printhead may be bad do to third party ink.
Try these steps first.
Diagnosing Print-Quality Problems
The Troubleshooting Print-Quality Page provides a good overview of the most
common print quality problems. To print the Troubleshooting Print-Quality Page,
follow these steps:
1. From the Control Panel, scroll to Troubleshooting, then press OK.
2. Scroll to Print Quality Problems, then press OK.
3. Scroll to Troubleshooting Print Quality Page, then press OK.
The Troubleshooting Print Quality Page includes instructions for printing the
Eliminate Light Stripes test print. These instructions are also provided on the next
page of this manual. The Eliminate Light Stripes test print indicates individual weak
or missing jets or an obstruction in the imaging path that affects a vertical band down
the entire page. Also, you may see color variation from jet to jet on the Eliminate
Light Stripes test print. Some variation is normal, occasionally occurs, and usually
self-corrects within a few printed pages. If a print-quality problem is not resolved
with the information provided in the Diagnosing Print-Quality

Nov 26, 2008 | Xerox Phaser 8560DN Laser Printer

1 Answer

Fuzzy page continious.


Yeah I just read a tip. There seems to be a problem with the wave amp board, I will send you the engineering note. Sometimes though that encoder needs replaced and cleaning is not the total fix. The encoder may need replaced, but I found this also.

I just received this, this morning.



Failed Wave Amp
Solution: thumbsup.gif Fixed! thumbsdn.gif Did not fix. Historically blurry print was caused by oil on the drum encoder wheel. This can be caused by the wave amp board. A cracked capacitor on the board causes the wave amp to produce a malformed amplified wave signal to the printhead. This in turn causes the printhead to eject ink at the wrong times, so the prints look blurry.

You can generally distinguish a wave amp problem from an oily drum encoder. The wave amp problem will usually be an infant failure. The printer will start producing blurry prints soon after it is installed and running. With a failed wave amp all prints will be blurry with no improvement. The drum encoder, on the other hand, may produce good prints and then bad prints and then good prints. Blurriness changes depending on how the oil is interfering with the encoder.

May 05, 2008 | Xerox Phaser 8500/DN Printer

1 Answer

OKI c5400


Assuming that you are using the same paper and have not changed any of the consumables you should do the following:

1. Clean LED head with lens cleaner or soft tissue.
  1. Remove the toner cartridge and give it a few shakes then reinstall it.
  2. The Toner Could be low so Change toner cartridge.
4. Make sure that the paper is not damp as this will cause fading and poor quality printing and images.
  1. The image drum may have been light contaminated so remove it from the printer and store it in a totally dark place for several hours then reinstall it.
  2. If the image drum is dirty then wipe it very gently with soft tissues, being careful not to scratch it.
  3. Open the top cover and check to be sure that each toner cartridge is fully seated and that each toner cartridge lock lever is pushed all the way back.
  4. Press the top cover release latch and open, then close, the cover.
  5. Check MEDIA MENUTRAY1 MEDIA TYPE and set as required. Do the same for TRAY2 and MPT.
  6. Check MEDIA MENUTRAY1 MEDIA WEIGHT and set as required. Do the same for TRAY2 and MPT.
  7. Possibly set the value of media weight in the menu to the next heaviest one.
  8. Check PRINT MENURESOLUTION setting and set to 600 x 1200DPI
  9. Check PRINT MENUTONER SAVE MODE and make sure this is OFF
  10. Check PRINT MENU – MONO PRINT SPEED and make sure this is set to MIXED SPEED
  11. Check the COLOUR MENU – DENSITY CONTROL and set this to AUTO
  12. Check the COLOUR MENU – AUTO DENSITY and set this to EXECUTE
  13. Check the COLOUR MENUCMY 100% DENSITY is set to ENABLE if you want a glossier black finish.

Feb 17, 2008 | OKI C5400 Laser Printer

1 Answer

Incoming fax quality


Are you using genuine Brother supplies? Generic supplies are the main reason for print quality issues. Have you ever changed thr drum unit ? Expensive! You can buy a new machine and get a new drum and toner for a little bit more.

I’m happy to help further over the phone at https://www.6ya.com/expert/jayw_0e86fb055a7b73de

Oct 22, 2006 | Brother IntelliFAX 2800 Laser Fax

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