Method of detecting the end of life of a pen
US6565179B1 · kind B1 · utility
14Cited by
8References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1999 |
| Grant date | May 20, 2003 |
| Priority date | — |
| Expiry date | Feb 19, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/16579
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
There is provided a method for determining the end of life of a pen having a printhead with a plurality of nozzles. The method includes performing a drop detection on the printhead to check if any nozzle of the printhead is malfunctioning and storing the result of the drop detection together with the results of previous drop detections to keep a history of the health status of each nozzle. The method also includes evaluating the history of the health status of each nozzle of the printhead, and deciding whether or not to mark the pen as an end of life pen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.