Ink jet recording apparatus for ejecting droplets of ink through promotion of capillary action
US5148185A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1991 |
| Grant date | Sep 15, 1992 |
| Priority date | — |
| Expiry date | Mar 28, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/14387
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A thermal ink jet recording apparatus includes a plurality of heating elements which serve as pressure generating members spaced apart from a plurality of nozzles. A reservoir, which stores ink prior to ejection through the nozzles, is formed between a nozzle plate and the pressure generating members and has a first cross-sectional area. A gap formed between a pair of substrates upon which the pressure generating members are disposed has a second cross-sectional area. An additional reservoir for storing ink is in fluid communication with the gap and has a third cross-sectional area. The first cross-sectional area is smaller than the second cross-sectional area and the second cross-sectional area is smaller than the third cross-sectional area for promoting capillary action in ejecting droplets of ink through the plurality of nozzles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.