Bubble-jet type ink-jet printhead and manufacturing method thereof
US6533399B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2001 |
| Grant date | Mar 18, 2003 |
| Priority date | — |
| Expiry date | Jul 18, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/1437
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A bubble-jet type ink-jet printhead, and a manufacturing method thereof are provided, wherein, the printhead includes a substrate integrally having an ink supply manifold, an ink chamber, and an ink channel, a nozzle plate having a nozzle, a heater consisting of resistive heating elements, and an electrode for applying current to the heater. In particular, the ink chamber is formed in a substantially hemispherical shape on a surface of the substrate, a manifold is formed from its bottom side toward the ink chamber, and the ink channel linking the manifold and the ink chamber is formed at the bottom of the ink chamber. Thus, this simplifies the manufacturing process and facilitates high integration and high volume production. Furthermore, a doughnut-shaped bubble is formed to eject ink in the printhead, thereby preventing a back flow of ink as well as formation of satellite droplets that may degrade image resolution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.