Image formation device and cartridge which uses verification data stored in a memory of the cartridge
US7505698B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 15, 2006 |
| Grant date | Mar 17, 2009 |
| Priority date | — |
| Expiry date | Jun 10, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0167
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image formation device is disclosed that is able to detect data errors each time data are read from a memory in a cartridge and able to detect transmission error of the data. The image formation device includes a cartridge memory controller and a verification unit to verify reliability of data read from the memory of the cartridge. The cartridge reads both predetermined data and verification data stored in the memory unit, and sends the predetermined data and verification data to the image formation device; the verification unit compares the read-out verification data to verification data stored in a main body of the image formation device to verify reliability of the data read from the memory unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.