Image forming apparatus and image forming system that calculate operation amount of components thereof
US7593652B2 · kind B2 · utility
10Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2006 |
| Grant date | Sep 22, 2009 |
| Priority date | — |
| Expiry date | May 10, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/1823
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Process units, a transfer unit, a belt cleaning unit, a secondary transfer unit and a fixing unit each include a storage unit that stores therein information on the operation amount thereof measured by a controller as operation record with respect to each unit. The controller updates the information stored in the storage unit after each time the controller measures the operation amount. The controller calculates remaining lifetime of the units based on the operation amount and a predetermined lifetime index.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.