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Printing Quality Issue

Post by Admin on Wed Nov 13, 2013 11:03 pm




The following tables provide basic troubleshooting steps for common print quality issues.
Blank pages

Cause Solution
The printer is not plugged in or power switch is off. Make sure that the printer is plugged into a live wall outlet or power strip and that the printer is turned on.
The computer cable is loose. Check that the cable between the printer and the computer is securely connected.
The tape was not removed from the print cartridge. Remove the print cartridge, remove the tape, and return the print cartridge.
The print cartridge is out of toner. Replace the print cartridge.
The media does not meet HP's specifications Make sure that media meets the specifications detailed in the HP LaserJet Printer Family Media Guide.
The print cartridge is damaged. Replace the cartridge.
The contacts on the print cartridge or the ECU are dirty. Clean the contacts.
The contacts on the print cartridge or the ECU are damaged. Replace the print cartridge.
Light print or faded


Cause Solution
The toner supply is low. Gently shake the print cartridge back and forth to redistribute the toner in the print cartridge. Replace the print cartridge if necessary.
The media might not meet Hewlett-Packard's media specifications (for example, the media is too moist or too rough). Make sure that media meets the specifications detailed in the HP LaserJet Printer Family Media Guide.
If the whole page is light, the print density adjustment is too light or EconoMode might be turned on. Adjust the print density, and disable EconoMode in the printer Properties.










Toner specks


Cause Solution
The media might not meet Hewlett-Packard's media specifications (for example, the media is too moist or too rough). Make sure that media meets the specifications detailed in the HP LaserJet Printer Family Media Guide.
The printer might need to be cleaned. Clean the paper path. See the Use Guide for assistance.
Dropouts


Cause Solution
A single sheet of media might be defective. Try reprinting the job.
The media's moisture content is uneven or the media has moist spots on its surface. Try printing with new media.
The media lot is bad. The manufacturing processes can cause some areas to reject toner. Try a different type or brand of media.
The print cartridge might be defective. Replace the print cartridge.
The print density needs to be adjusted. Adjust the print density from the device configuration utility.
EconoMode is selected in the software. Try the normal or best setting.
The print cartridge is defective. Replace the print cartridge.
The print cartridge is depleted or damaged. Replace the print cartridge.




Vertical lines


Cause Solution
The photosensitive drum inside the print cartridge has probably been scratched. Install a new HP print cartridge.
The fuser is defective. Replace the fuser.













Gray background


Cause Solution
The single-sheet priority input slot may not be in place. Make sure that the single-sheet priority input slot (Tray 1) is in place.
The print density setting may be too high. Decrease the print density setting through HP Toolbox or the embedded Web server. This decreases the amount of background shading.
The media basis weight may be too heavy. Change the media to a lighter basis weight.
The humidity level is too low. Very dry (low humidity) conditions can increase the amount of background shading. Check the printer's environment. Move the printer to a different location, or decrease the background shading through the HP toolbox or EWS.
The print cartridge may be worn or damaged. Install a new HP print cartridge.




Toner smear


Cause Solution
If toner smears appear on the leading edge of the media, the media guides might be dirty. Wipe the media guides with a dry, lint-free cloth.
The media you are using does not meet HP's specifications (for example, it is too moist or too rough). Make sure that media meets the specifications detailed in the HP LaserJet Printer Family Media Guide.
The print cartridge may be damaged. Try installing a new HP print cartridge.
The fuser temperature might be too low. Select Type is:in the Paper/Qualitytab of the printer driver. Make sure that it is set for the appropriate media. If the problem persists, replace the fuser.
The pressure roller in the fuser is damaged. Replace the fuser.













Loose toner


Cause Solution
The inside of the printer is dirty. Clean the inside of the printer.
The media you are using does not meet HP's specifications. (For example, it is too moist or too rough.) Make sure that media meets the specifications detailed in the HP LaserJet Printer Family Media Guide.
The print cartridge needs to be replaced. Replace the print cartridge.
The print driver is not set for the correct media. Select the correct media through either the device configuration utility or under Type is:in the Paper/Qualitytab of the printer driver.
The printer may be plugged into a power strip or UPS. Plug the printer directly into an AC outlet instead of into a power strip.
The pressure roller in the fuser is damaged. Replace the fuser.
The fuser temperature is too low. Select Type is:in the Paper/Qualitytab of the printer driver. Make sure that it is set for the appropriate media. If the problem persists, replace the fuser.




Loose toner


Cause Solution
The inside of the printer is dirty. Clean the inside of the printer.
The media you are using does not meet HP's specifications. (For example, it is too moist or too rough.) Make sure that media meets the specifications detailed in the HP LaserJet Printer Family Media Guide.
The print cartridge needs to be replaced. Replace the print cartridge.
The print driver is not set for the correct media. Select the correct media through either the device configuration utility or under Type is:in the Paper/Qualitytab of the printer driver.
The printer may be plugged into a power strip or UPS. Plug the printer directly into an AC outlet instead of into a power strip.
The pressure roller in the fuser is damaged. Replace the fuser.
The fuser temperature is too low. Select Type is:in the Paper/Qualitytab of the printer driver. Make sure that it is set for the appropriate media. If the problem persists, replace the fuser.
Vertical repetitive defects


Cause Solution
The print cartridge might be damaged. If a repetitive mark occurs at the same spot on the page, install a new HP print cartridge.
The internal parts might have toner on them. If the defects occur on the back of the page, the problem will probably correct itself after a few more printed pages; otherwise, clean the printer.
The print driver is not set for the correct media. Select the correct media through either the device configuration utility or under Type is:in the Paper/Qualitytab of the printer driver.













Misformed characters


Cause Solution
If characters are improperly formed, producing hollow images, the media stock might be too slick. Try a different media.

Make sure that media meets the specifications detailed in the HP LaserJet Printer Family Media Guide.
The printer driver is not set for the correct media. Select the correct media through either the HP LaserJet Toolbox or under Type is:in the Paper/Qualitytab of the printer driver.
If characters are improperly formed, producing a wavy effect, the printer might need service. Print a configuration page. If the characters are improperly formed, contact an HP-authorized dealer or service representative.




Misformed characters


Cause Solution
If characters are improperly formed, producing hollow images, the media stock might be too slick. Try a different media.

Make sure that media meets the specifications detailed in the HP LaserJet Printer Family Media Guide.
The printer driver is not set for the correct media. Select the correct media through either the HP LaserJet Toolbox or under Type is:in the Paper/Qualitytab of the printer driver.
If characters are improperly formed, producing a wavy effect, the printer might need service. Print a configuration page. If the characters are improperly formed, contact an HP-authorized dealer or service representative.
Page skew


Cause Solution
The media may not be loaded correctly. Reload the media, and make sure that the media guides are not too tight or too loose against the media stack.
The input bin might be too full. Remove some of the sheets. The main input tray can hold up to 250 sheets of 20-lb. (75 g/m2) bond weight paper (or fewer pages of heavier media, a stack no higher than 25 mm).
The print driver is not set for the correct media. Select the correct media through either the HP LaserJet Toolbox or under Type is:in the Paper/Qualitytab of the printer driver.
The media you are using does not meet HP's specifications (for example, it is too moist or too rough). Make sure that the media meets specifications detailed in the HP LaserJet Printer Family Media Guide.














Curl or wave


Cause Solution
The printer is operating in humidity or temperature conditions that are not within the recommended ranges. Move the printer to a different location.
The media is not the correct type or quality. Both high temperature and humidity cause media to curl. Make sure that media meets the specifications detailed in the HP LaserJet Printer Family Media Guide.
The media was in the input tray too long. Turn over the stack of media in the tray. Also, try rotating the media 180° in the input tray.
The standard paper path is not working correctly. Open the straight-through output door and try printing straight through.
The fuser temperature might be too high. Select the correct media through either the HP LaserJet Toolbox or under Type is:in the Paper/Qualitytab of the printer driver.
Wrinkles or creases


Cause Solution
Media is not loaded properly. Make sure that media is loaded properly.
The print driver is not set for the correct media. Select the correct media through either the HP LaserJet Toolbox or under Type is:in the Paper/Qualitytab of the printer driver.
Paper is not feeding correctly through the printer. Open the straight-through output door and try printing straight through.
Turn over the stack of media in the tray. Also, try rotating the media 180° in the input tray.
For envelopes, this can be caused by air pockets inside the envelope. Remove the envelope, flatten the envelope, and try printing again.















media is not with specification for LaserJet printers. Make sure that media meets the specifications detailed in the HP LaserJet Printer Family Media Guide.
Pages not printing around the edge


Cause Solution
The printer cannot print all the way to the edge of the paper. The printer has minimum margins on each edge of approximately 4.23 mm (0.167 inches). To get the image to fit into the printable area, slightly reduce the size of the image.
The reduction setting is incorrect. Check the reduction setting in the "Print"or "Setup"window from within the program that you are using.




Water drops on trailing edge of paper


Cause Solution
Moisture in the printer is condensing on the fuser assembly and dropping onto the media. In excessively hot and humid areas, media retains moisture. Try a different media.

Store media in airtight containers to minimize absorption of moisture.

Water droplets do not damage the printer.
Toner scatter outline
CauseSolutionIf large amounts of toner have scattered around the characters, the media might be resisting the toner. (A small amount of toner scatter is normal for laser printing.) Try a different media type.

Select the correct media through either the HP LaserJet Toolbox or under Type is:in the Paper/Qualitytab of the printer driver.The media is not with specification for LaserJet printers.Make sure that media meets the specifications detailed in the HP LaserJet Printer Family Media Guide.





















Check the print cartridge
Image formation defects are frequently the result of problems in the print cartridge. If there is any doubt, always replace the print cartridge before troubleshooting image defects.
Use the following checklist to make sure that the print cartridge is still operable.
Make sure that the shipping tape was removed and the print cartridge is properly installed.
Inspect the print cartridge for toner level.
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 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 cartridge has been overexposed to light. Because overexposure to light causes permanent damage to the photosensitive drum, the cartridge should be replaced.
Redistribute toner in the print cartridge
Before installing a new print cartridge or when toner begins to run low, redistribute the toner by rotating the cartridge back and forth five or six times.



Check the print cartridge
Image formation defects are frequently the result of problems in the print cartridge. If there is any doubt, always replace the print cartridge before troubleshooting image defects.
Use the following checklist to make sure that the print cartridge is still operable.
Make sure that the shipping tape was removed and the print cartridge is properly installed.
Inspect the print cartridge for toner level.
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 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 cartridge has been overexposed to light. Because overexposure to light causes permanent damage to the photosensitive drum, the cartridge should be replaced.
Redistribute toner in the print cartridge
Before installing a new print cartridge or when toner begins to run low, redistribute the toner by rotating the cartridge back and forth five or six times.


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