Ink jet recording head and method for manufacturing the same
US6361155B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 2000 |
| Grant date | Mar 26, 2002 |
| Priority date | — |
| Expiry date | Jun 23, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/07
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Any air trapped in a connection portion between adjacent ones of flow passage plates of an ink jet recording head in manufacturing the head. The head comprises: a reservoir plate with a reservoir cavity for forming an ink reservoir; a chamber plate with a chamber cavity for forming a pressure generating chamber in which ink is pressurized; and, a first air passage and a second air passage, wherein the first and the second air passage have first groove portions and second groove portions thereof staggered in cross section, respectively, and formed them in opposite surfaces of the reservoir plate and those of the chamber plate, respectively, and disposed them in a peripheral portion of the ink reservoir and that of the pressure generating chamber, respectively, wherein: the reservoir and the chamber form essential parts of an ink flow passage; the groove portions are staggered in arrangement not to have their front ones aligned with their rear ones in cross section, wherein the front ones being communicated with the rear ones through through-holes, respectively; whereby the air trapped in the connection portion may flow in a zigzag course along these groove portions to escape to the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.