Inkjet printhead heater with high surface area
US7086719B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 2004 |
| Grant date | Aug 8, 2006 |
| Priority date | — |
| Expiry date | Mar 26, 2025 |
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 respective corresponding nozzle, to effect printing. Each heater element has a surface area to volume ratio greater than 4:1. This configuration ensures that heat is quickly transferred from the elements to the ink for efficient operation and minimal heating of the printhead substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.