- HP All-in-One Printer Manual

306 Troubleshooting Q2431-90912
Image-formation troubleshooting
The image formation system is the central hub of the printer. During image formation, an image
of toner is formed and then fused onto the paper. The image formation system consists of the
following physical components:
● laser/scanner
● print cartridge
● fuser
● transfer roller
● Supporting circuitry (power supply and DC controller PCA)
Before beginning image formation troubleshooting, check that the media meets the
specifications listed in chapter 1 and/or the HP LaserJet Printer Family Print Media Guide. See
“Supported sizes and weights of media” on page 10 and “Supported types of media” on page 14.
Print quality problems associated with media
Some print quality problems arise from use of inappropriate media.
● Use paper that meets HP paper specifications. See the specifications listed in the
HP LaserJet Printer Family Print Media Guide.
● The surface of the media is too smooth. Use media that meets HP paper
specifications. See the specifications listed in the
HP LaserJet Printer Family Print Media Guide.
● The driver/printer is set incorrectly. Change the paper type setting.
● The media you are using is too heavy for the printer, and the toner is not fusing to
the media.
● The transparencies you are using are not designed for proper toner adhesion or high
fusing temperatures. Use only transparencies designed for monochrome
HP LaserJet printers.
● The moisture content of the paper is uneven, too high, or too low. Use paper from a
different source or from an unopened ream of paper.
● Some areas of the paper reject toner. Use paper from a different source or from an
unopened ream of paper. Make sure the paper has not been previously used.
● The letterhead you are using is printed on rough paper. Use a smoother, photocopy
paper. If this solves your problem, consult with the printer of your letterhead to verify
that the paper used meets the specifications for this printer.
● The paper is excessively rough. Use a smoother, photocopy paper.
● The paper has a coating that is not compatible with the electrophotographic process
used by this printer.
● The letterhead or other pre-printed media was printed with inks or other materials
that can contaminate the fuser which can cause offset or repeated images.
● The use of some carbonless papers can cause printer contamination and can cause
printer damage if used repeatedly.