Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Changeable process cartridge used in an image forming apparatus having a useable life determining means

Changeable process cartridge used in an image forming apparatus having a useable life determining means

US Patent 5155527 · Granted Oct 13, 1992

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Cleaning device for cleaning copy machine component2000
Exposure control device for use in electrophotographic printing apparatus1994
Image forming apparatus for superposing a plurality of images on one transfer me1993
Image forming apparatus with toner density control based on the medium supplied1992
Image forming apparatus having simultaneous cleaning and developing means1992
Thermal print head1991
Apparatus for manufacturing thermal print head1990
Printer having specially arrayed ink holes1989
Image formation device1989
Reverse developing image forming apparatus with disturbing means1989
Printing apparatus1989
Recording apparatus having an accessible housing1989