Liquid discharge head, method for manufacturing liquid discharge head, head cartridge on which liquid discharge head is mounted, and liquid discharge apparatus
US6474792B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2001 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | Jul 30, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/14048
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In a liquid discharge head having a movable member displaced by generation of a bubble, endurance of stepped portions of the movable member and of root portions of movable parts of the movable member is enhanced and flexure deformation of the movable member is prevented to enhance endurance of the member. A pressing member for covering stepped portions of a movable member and root portions of branched movable parts is provided within a flow path. A part of the pressing member is tapered and extends to a downstream side (toward a discharge port) to be spaced apart from the movable member, thereby forming a flexure regulating portion opposed to and spaced apart from an intermediate portion of the movable member. The pressing member and the flexure regulating portion suppress excessive deformation of the movable member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.