Image forming apparatus using a process unit

Details Image forming apparatus using a process unit Image forming apparatus using a process unit

1995-06-07

1996-08-20

Smith, Matthew S.

Photocopying

Contact printing

Light boxes

355206, 355208, 355210, 355246, G03G 2100, G03G 1500

Patent

active

055483747

ABSTRACT:
In a recording apparatus for performing electro-static recording using toner, an image forming apparatus has a process unit including, as one unit, at least a photosensitive member and a spent toner holding section, a first counter for counting a total amount of use of the photosensitive member and a second counter for counting a total amount of toner that has been consumed. A determining section using the process unit determines the necessity for the process unit to be replaced with a new process unit by comparing a total amount of use of the photosensitive member counted by the first counter with a first predetermined reference value and the total amount of consumed toner with a second predetermined reference reference value according to whether the total amount of use of the photosensitive member exceeds the first reference value or the total amount of toner counted exceeds the second reference value.

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