Nozzle head of an ink-jet printing apparatus with built-in fluid diodes
US4216477A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 1979 |
| Grant date | Aug 5, 1980 |
| Priority date | — |
| Expiry date | May 2, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/14403
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A nozzle head of an ink-jet printing apparatus according to the present invention comprises an ink reservoir for storing the ink supplied from an ink tank, a pump chamber provided between said ink reservoir and a nozzle for injecting ink particles, and a fluid diode provided between said ink reservoir and said pump chamber, which are all formed in a same substrate, wherein said pump chamber is caused to change its volume responsive to electric signals so that the ink stored therein is injected from said nozzle, and the ink is prevented from reversely flowing from said pump chamber to said ink reservoir when the volume of the pump chamber is changed, thereby to improve the frequency response of ink particles injected from the nozzle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.