Image forming apparatus, replacement assembly for image forming apparatus and integrated circuit chip therefor
US6690896B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2001 |
| Grant date | Feb 10, 2004 |
| Priority date | — |
| Expiry date | Jan 3, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/183
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides an electro photographic image forming apparatus comprising a replacement assembly having a toner container attachable to the image forming apparatus, a feeding unit to feed toner from the toner container to a development unit, and a read/write non-volatile memory, wherein, the image forming apparatus comprising an estimation unit which generates information in such way that first, the estimation unit obtains an amount of a toner feed period for the feeding unit during forming images, next, accumulates the amount of a toner feed period into an accumulated sum of the amount of a toner feed periods, then, generates the information on the amount of toner in the replacement assembly and stores the information in the read/write non-volatile memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.