Image forming apparatus having a function of identifying a toner cartridge
US5486899A · kind A · utility
10Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1994 |
| Grant date | Jan 23, 1996 |
| Priority date | — |
| Expiry date | Jul 18, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0685
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A control section 81 of a PPC outputs a request signal having a command that designates an encrypting rule to a cartridge CPU 45f of a toner cartridge. The control section 81 receives a response signal based on the output of the request signal from the cartridge CPU 45f, and collates the response signal with identification data in a ROM 82. The conformability of the toner cartridge is discriminated in accordance with whether or not the response signal received from the cartridge CPU 45f corresponds to the encrypting rule designated by the command of the request signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.