Liquid discharge head, liquid discharge device, liquid discharge apparatus, and method for manufacturing liquid discharge head
US11981135B2 · kind B2 · utility
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Key dates
| Filing date | Jul 19, 2022 |
| Grant date | May 14, 2024 |
| Priority date | — |
| Expiry date | Nov 23, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/14419
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A liquid discharge head includes: a nozzle plate having a nozzle from which a liquid is to be discharged in a discharge direction, the nozzle having a cylindrical hole having periodical convex portions and concave portions on a sidewall of the nozzle in the discharge direction, a diameter of an outermost portion of the nozzle in the discharge direction being smaller than an average diameter of minimum values and maximum values of diameters of the cylindrical shape. The average diameter is obtained by: Average diameter=(Sum of minimum values+Sum of maximum values)/(Count of minimum values+Count of maximum values).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.