Ink-jet printhead and manufacturing process
US6345885B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2000 |
| Grant date | Feb 12, 2002 |
| Priority date | — |
| Expiry date | Apr 27, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/03
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink-jet printhead and its manufacturing process therefor. The manufacturing process comprises the steps of: providing a substrate; forming a loop-shaped protection layer of a predetermined size over the central region of the substrate, the loop-shaped protection layer defining a predetermined area surrounded thereby; and forming an ink passage by sand blasting through the substrate on the predetermined area so that the ink within the ink cartridge can flow into the ink-jet printhead through the ink passage.Therefore, during the sand blasting process, cracking of the IC chip can be avoided because of the protection by the loop-shaped protection layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.