Thermal ink jet printhead with symmetric bubble formation
US6672710B1 · kind B1 · utility
45Cited by
1References
47Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2002 |
| Grant date | Jan 6, 2004 |
| Priority date | — |
| Expiry date | Nov 23, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/20
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
There is disclosed an ink jet printhead which comprises a plurality of nozzles and one or more heater elements corresponding to each nozzle. Each heater element is configured to heat a bubble forming liquid in the printhead to a temperature above its boiling point to form a gas bubble therein. The generation of the bubble causes the ejection of a drop of an ejectable liquid (such as ink) through the respective corresponding nozzle, to effect printing. Each heater element has two opposite sides and is configured such that the gas bubble formed by that heater element is formed at both of these sides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.