Thermal ink jet printhead with suspended beam heater
US6755509B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 2002 |
| Grant date | Jun 29, 2004 |
| Priority date | — |
| Expiry date | Nov 28, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/21
- 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 respective corresponding nozzle, to effect printing. Each heater element is in the form of a beam suspended over at least a portion of the bubble forming liquid (which liquid can be the ink) so as to be in thermal contact therewith. This configuration of printhead provides for a relatively high efficiency of operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.