Authenticating a replaceable printer component
US9141816B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 29, 2008 |
| Grant date | Sep 22, 2015 |
| Priority date | — |
| Expiry date | Apr 10, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2221/1823
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A replaceable printer component includes a first memory device and a communication link. The first memory device is configured to store a first secret. The communication link is configured to communicatively link the first memory device to a printer controller when the replaceable printer component is installed in a printing system. The printing system comprises a second memory device storing a second secret. The second memory device is communicatively linked to the printer controller. The printer controller is configured to determine an authenticity of the replaceable printer component based on the first secret and the second secret.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.