Patent · US Expired

Image forming apparatus having a mode in which a process unit may be replaced

US6647213B2 · kind B2 · utility

3Cited by
2References
38Claims
0Family size

Assignees

Inventor

Key dates

Filing dateNov 30, 2001
Grant dateNov 11, 2003
Priority date
Expiry dateNov 30, 2021

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG03G2221/1838
  • WIPO fieldOptics
  • WIPO sectorInstruments

Abstract

In an image forming apparatus, a replaceable process unit which holds a photosensitive body and a device to form at least one image can be held in a holding section. The image forming apparatus counts an amount of use of the process unit and stores a count value in a storage section. When the image forming apparatus performs a printing operation, the apparatus determines whether a mode selectively set by a mode setting section is a first mode in which a printing operation stops when the count value reaches a given value or a second mode in which the printing operation does not stop when the count value reaches the given value.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.