Universal printer chip
US7286774B1 · kind B1 · utility
23Cited by
12References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2005 |
| Grant date | Oct 23, 2007 |
| Priority date | — |
| Expiry date | Dec 21, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/0697
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A toner cartridge having a microcontroller configured to store data necessary to create a message authentication code required by the printer. The microcontroller contains data values capable of generating acceptable MACs for a plurality of printers. The microcontroller recognizes a variety of unique parameters displayed by the printer's processor to identify the printer being used. Once the printer is identified, the microcontroller loads the data values associated with the printer and generates an acceptable MAC to enable printer operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.