Image forming apparatus having developer amount detecting means and cartridge detachably mountable on the apparatus having a memory for storing information on the amount of developer detected by detecting means
US6347198B1 · kind B1 · utility
22Cited by
4References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 1, 2000 |
| Grant date | Feb 12, 2002 |
| Priority date | — |
| Expiry date | Sep 1, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/183
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus has a developer container for containing a developer, a developer amount detecting device for detecting the amount of the developer contained in the developer container, a consumed amount calculating device for calculating the consumed amount of the developer, and a remaining amount calculating device for calculating the remaining amount of the developer from an output of the detecting device and an output of the consumed amount calculating device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.