Faulty ink ejector detection in an ink jet printer
US6375299B1 · kind B1 · utility
63Cited by
13References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 2, 1998 |
| Grant date | Apr 23, 2002 |
| Priority date | — |
| Expiry date | Nov 2, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/14354
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A system and method for detecting a faulty piezoelectrically actuated ink ejector includes the piezoelectric element with an input signal, and sensing a response of the piezoelectric element to the input signal. Phase relationships and frequency dependent impedances may be analyzed and used to detect faulty ink ejectors. The detection circuit may include processing in the digital domain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.