Apparatus for reducing erosion due to cavitation in ink jet printers
US4528574A · kind A · utility
23Cited by
6References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 28, 1983 |
| Grant date | Jul 9, 1985 |
| Priority date | — |
| Expiry date | Mar 28, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/17
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A novel structure which reduces stress due to cavitation in a thermal ink jet head is disclosed. A jetting resistor is formed on a thin membrane and suspended in contact with an acoustic absorber such as silicon oil on its back surface. The pressure wave created by the collapsing bubble which occurs in the ink on the membranes front surface each time the resistor is fired is thus absorbed by the silicon oil. The failure rate of such a jetting resistor is thus substantially reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.