Liquid ejection head and production method for producing same
US12246535B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2022 |
| Grant date | Mar 11, 2025 |
| Priority date | — |
| Expiry date | Feb 2, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/18
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A liquid ejection head includes an element substrate in which a liquid ejection port is formed, the element substrate having an energy generating element that generates energy for ejecting the liquid from the ejection port, and a plurality of wiring pads lined up in a predetermined direction; a flexible wiring substrate having a plurality of leads lined up in the predetermined direction and overlaid on and connected to the plurality of wiring pads, respectively, and a base film overlaid on the plurality of leads; and a sealant that seals a plurality of connection portions of the plurality of wiring pads and the plurality of leads. The base film has a plurality of covering portions that respectively cover an opposite side of the plurality of leads from the plurality of connection portions, and an opening or slit formed between the plurality of covering portions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.