Method of determining useful life of cartridge for an ink jet printer
US5068806A · kind A · utility
79Cited by
4References
33Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 2, 1988 |
| Grant date | Nov 26, 1991 |
| Priority date | — |
| Expiry date | Dec 2, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/17503
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A computer program in the microcontroller of an ink jet printer-plotter counts the ink dots fired by the cartridge of the printer. The host system keeps the dot count in nonvolatile memory. When the number of dots corresponding to the nominal capacity of the cartridge has been fired, a message is printed by the printer reminding the operator to provide a fresh cartridge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.