Method of authenticating a consumable
US7240995B2 · kind B2 · utility
11Cited by
19References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 2003 |
| Grant date | Jul 10, 2007 |
| Priority date | — |
| Expiry date | Mar 25, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/04
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of authenticating a consumable used in an imaging device includes the steps of providing the consumable with a memory; monitoring usage of the consumable; determining whether the consumable has reached a usage threshold; and, if the consumable has reached the usage threshold, then performing the further steps of: renewing the consumable; generating an authentication code signifying the renewing of the consumable; and storing the authentication code in the memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.