Supersonic wave, ink jet recording apparatus including ink circulation means
US6123412A · kind A · utility
8Cited by
9References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1998 |
| Grant date | Sep 26, 2000 |
| Priority date | — |
| Expiry date | Mar 11, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/14008
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink jet recording apparatus uses supersonic waves focused on an ink holding container to inject ink from the ink surface onto a recording medium. A piezoelectric element driven by a first driving signal serves as the supersonic wave generator. The piezoelectric element can also be driven by a second driving signal to effectively circulate the ink in the holding container. The second driving signal results in an acoustic pressure at the ink surface lower than the acoustic pressure necessary for injecting the ink onto a recording medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.