Impact position transducer for ink jet
US4067019A · kind A · utility
33Cited by
6References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1976 |
| Grant date | Jan 3, 1978 |
| Priority date | — |
| Expiry date | Jun 14, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/125
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A sensing arrangement for accurately detecting the position of ink jet or similar drop impact thereon. The drop impact occurs on the surface of a poled piezoelectric between two parallel conductors. The charge generated by drop impact is localized, the degree inversely dependent upon the piezoelectric thickness, so that the signal generated in a conductor is dependent upon the distance of the impact location from the conductor. Thus, using transimpedance amplifiers, the difference of the output signals indicates the impact position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.