General print quality issues

General print quality issues


The following examples depict Letter-size paper that has passed through the product short-edge first. These examples illustrate problems that would affect all of the pages that you print, whether you print in color or in black only. The topics that follow list the typical cause and solution for each of these examples.


Problem
Cause
Solution
Print is light or faded.
HP Color Laserjet CP2020 4 vfade General print quality issues
The media might not meet HP specifications.
Use media that meets HP specifications.
One or more print cartridges might be defective.
Print the Supplies status page to check the remaining life. See Information pages.
Replace any low print cartridges. See Replace print cartridges.
The product is set to override the Replace <color> cartridge message and to continue printing.
Replace any low print cartridges. See Replace print cartridges.
The print density settings may have been changed.
Set the print density setting to 0.
The product may need to be calibrated.
Run a calibration. See Calibrate the product.
Toner specks appear.
HP Color Laserjet CP2020 4 specs General print quality issues
The media might not meet HP specifications.
Use media that meets HP specifications.
The paper path might need cleaning.
Clean the paper path. See Clean the product.
One or more of the cartridges may be leaking.
Try to verify the color of the toner specks and check the cartridge for leaks.
The cartridge waste tank may be overfilled.
Check for error code 10.98.XX in the event log. See Event log. The XX portion of the code identifies the cartridge (00 is black, 01 is cyan, 02 is magenta, 03 is yellow). If the error was logged, replace the affected cartridge.
Dropouts appear.
HP Color Laserjet CP2020 4 drpout General print quality issues
A single sheet of print media might be defective.
Try reprinting the job.
The moisture content of the paper is uneven or the paper has moist spots on its surface.
Try different paper, such as high-quality paper that is intended for color laser printers.
The paper lot is flawed. The manufacturing processes can cause some areas to reject toner.
Try different paper, such as high-quality paper that is intended for color laser printers.
Vertical streaks or bands appear on the page.
HP Color Laserjet CP2020 4 vlines General print quality issues
One or more print cartridges might be defective.
Print the Supplies status page to check the remaining life. See Information pages.
Use HP ToolboxFX to troubleshoot the problem.
Replace any low print cartridges. See Replace print cartridges.
The product is set to override the Replace <color> cartridge message and to continue printing.
Replace any low print cartridges. See Replace print cartridges.
The amount of background toner shading becomes unacceptable.
HP Color Laserjet CP2020 4 gray General print quality issues
Very dry (low humidity) conditions can increase the amount of background shading.
Check the device environment.
One or more print cartridges might be defective.
Replace any low print cartridges. See Replace print cartridges.
The product is set to override the Replace <color> cartridge message and to continue printing.
Replace any low print cartridges. See Replace print cartridges.
Smooth media shows more background than plain media
Consider using rougher media.
Toner smears appear on the media.
HP Color Laserjet CP2020 4 smear General print quality issues
The media might not meet HP specifications.
Use media that meets HP specifications.
If toner smears appear on the leading edge of the paper, the media guides are dirty, or debris has accumulated in the print path.
Clean the media guides.
Clean the paper path. See Clean the product.
The toner smears easily when touched.
HP Color Laserjet CP2020 4 loose General print quality issues
The device is not set to print on the type of media on which you want to print.
In the printer driver, select the Paper tab and set Type is to match the type of media on which you are printing. Print speed might be slower if you are using heavy paper.
The media might not meet HP specifications.
Use media that meets HP specifications.
The paper path might need cleaning.
Clean the paper path. See Clean the product.
Marks repeatedly appear at even intervals on the printed side of the page.
HP Color Laserjet CP2020 4 reps General print quality issues
The device is not set to print on the type of media on which you want to print.
In the printer driver, select the Paper tab and set Type is to match the type of paper on which you are printing. Print speed might be slower if you are using heavy paper.
Internal parts might have toner on them.
The problem typically corrects itself after a few more pages.
The paper path might need cleaning.
Clean the paper path. See Clean the product.
The fuser might be damaged or dirty.
To determine if the fuser has a problem, open the HP ToolboxFX and print the print-quality diagnostics page. See Open HP ToolboxFX.
Contact HP Customer Care. See Service and support or the support flyer that came in the box.
A print cartridge may have a problem.
To determine which cartridge has a problem, open the HP ToolboxFX and print the print-quality diagnostics page. See Open HP ToolboxFX.
Marks repeatedly appear at even intervals on the unprinted side of the page.
HP Color Laserjet CP2020 4 rdef bkpg General print quality issues
Internal parts might have toner on them.
The problem typically corrects itself after a few more pages.
The paper path might need cleaning.
Clean the paper path. See Clean the product.
The fuser might be damaged or dirty.
To determine if the fuser has a problem, open the HP ToolboxFX and print the print-quality diagnostics page. See Open HP ToolboxFX.
Contact HP Customer Care. See Service and support or the support flyer that came in the box.
The printed page contains misformed characters.
HP Color Laserjet CP2020 4 wavy General print quality issues
The media might not meet HP specifications.
Use a different paper, such as high-quality paper that is intended for color laser printers.
If characters are incorrectly formed so that they produce a wavy effect, you may need to calibrate the product or the laser scanner might need service.
Verify that the problem also occurs on the Configuration page. If so, contact HP Customer Care. See Service and support or the support flyer that came in the box.
The printed page is curled or wavy.
HP Color Laserjet CP2020 4 curl General print quality issues
The device is not set to print on the type of media on which you want to print.
In the printer driver, select the Paper tab and set Type is to match the type of paper on which you are printing. Print speed might be slower if you are using heavy paper.
The Service menu item Less paper curl is set to Off.
Use the control-panel menus to change the setting. See Control-panel menus.
The media might not meet HP specifications.
Use a different paper, such as high-quality paper that is intended for color laser printers.
Both high temperature and humidity can cause paper curl.
Check the device environment. Adjust curl modes from the control panel or HP ToolboxFX.
Text or graphics are skewed on the printed page.
HP Color Laserjet CP2020 4 skew General print quality issues
The media might be loaded incorrectly.
Make sure that the paper or other print media is loaded correctly and that the media guides are not too tight or too loose against the stack. See Load paper and print media.
The media might not meet HP specifications.
Use a different paper, such as high-quality paper that is intended for color laser printers.
The printed page contains wrinkles or creases.
HP Color Laserjet CP2020 4 crease General print quality issues
The media might be loaded incorrectly.
Verify that the media is loaded correctly and that the media guides are not too tight or too loose against the stack. See Load paper and print media.
Turn over the stack of paper in the input tray, or try rotating the paper 180° in the input tray.
The media might not meet HP specifications.
Use a different paper, such as high-quality paper that is intended for color laser printers.
Toner appears around the printed characters.
HP Color Laserjet CP2020 4 scattr General print quality issues
The media might be loaded incorrectly.
Turn over the stack of paper in the tray.
If large amounts of toner have scattered around the characters, the paper might have high resistivity.
Use a different paper, such as high-quality paper that is intended for color laser printers.
An image that appears at the top of the page (in solid black) repeats farther down the page (in a gray field).
HP Color Laserjet CP2020 4 ghost2 General print quality issues
Software settings might affect image printing.
In your software program, change the tone (darkness) of the field in which the repeated image appears.
In your software program, rotate the whole page 180° to print the lighter image first.
The order of images printed might affect printing.
Change the order in which the images are printed. For example, have the lighter image at the top of the page, and the darker image farther down the page.
A power surge might have affected the device.
If the defect occurs later in a print job, turn the device off for 10 minutes, and then turn on the device to restart the print job.
 
Use non-glossy media to help reduce the severity of the defect
HP Color Laserjet CP2020 General print quality issues