Thermal inkjet pen having a backpressure sensor
US6398329B1 · kind B1 · utility
30Cited by
5References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2000 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Nov 15, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/14153
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A backpressure sensor is integrated into a printhead die, or alternatively to a pen body. The backpressure sensor is susceptible to ink pressure from ink within a printhead ink slot, ink channel or nozzle chamber, and to ambient pressure. For the alternative embodiment, the backpressure sensor is susceptible to ink pressure from ink within an ink slot, ink channel or ink cavity away from a printhead die, and to ambient pressure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.