Cartridge discriminating system
US4963939A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 21, 1987 |
| Grant date | Oct 16, 1990 |
| Priority date | — |
| Expiry date | Sep 21, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0695
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to a system for making discriminations between cartridges for housing toners to be equipped on image forming apparatus such as electrostatic copiers, laser beam printers, facsimiles, etc. in which while a cartridge indicating means is provided on a part of a toner housing cartridge, an indication detecting means for detecting the aforementioned cartridge indicating means is provided on the image forming apparatus proper side, so that the suitability of the type or position of the cartridge inserted is detected by detecting the cartridge indicating means by the aforementioned detecting means, when the cartridge has been inserted into the cartridge inserting part of the image forming apparatus proper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.