Potential toner cartridge issues

Banding

When printing with a laser printer, the toner is applied across the page in horizontal strips. The page is moved through the printer and toner is continually applied. When printing text or black image pages, a large amount of toner is deposited on the page. As the amount of toner deposited on the page decreases, slight speed variations become more apparent. As the resolution (dots per inch) and the speed (pages per minute) increase, a variation in pattern intensity might appear on the page as lines or bands.

The bands are more visible in certain grayscale patterns. High-speed printers that are capable of printing high-resolution, grayscale patterns are more likely to display the pattern variations. Changing the grayscale pattern or reducing the resolution might significantly reduce the amount of banding that occurs.

Character voids

Small gaps or voids might appear in some of the characters when printing on media other than standard photocopier paper. These “character voids” occur because some print media does not accept the transfer of toner as well as others.

To minimize the occurrence of character voids, avoid using media with a rough finish. Use media that is within the Hewlett-Packard paper specifications listed in the user guide or the HP LaserJet Printer Family Print Media Guide. If the finish is too rough, the surface will have large inconsistencies. If the finish is too smooth, toner will not adhere well. Adjusting the print density might affect the severity of character voids.

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