Ink jet head and method of manufacturing same
US6280642A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 1998 |
| Grant date | Aug 28, 2001 |
| Priority date | — |
| Expiry date | Apr 7, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/1645
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink jet print head suitable for high-density printing. The ink jet print head comprises a plurality of nozzles for ejecting an ink, ink chambers, for passage and pressurization of the ink, communicating with the nozzles, and pressurizing means for creating a change in volume of the ink in the ink chamber to eject the ink through the nozzles. The ink chamber comprises a base plate member comprised of a transparent substrate having a predetermined form and dimension, a base wall member made of a material impermeable to light, the base wall member being provided above the base plate member in a pattern form according to the form of the ink chamber, and a partitioning member provided, above the base plate member, in areas not occupied by the base wall member. The partitioning member is formed from a partitioning member-forming, photosensitive material by photolithography using the base wall member pattern as a mask. A process of producing the above ink jet head is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.