Liquid ejection head and printing apparatus
US8287089B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2009 |
| Grant date | Oct 16, 2012 |
| Priority date | — |
| Expiry date | Oct 6, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/155
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A print head is provided in which influence on ink to be ejected from an ejection port by an air flow generated by ink previously ejected from the ejection port is suppressed evenly for respective ejection ports in the print head. A print head has an ejection port for ejecting ink. On an ejection port forming face formed with the ejection port, a projection projecting from the ejection port forming face is formed. The projection is arranged at a position where the distance from a center of the ejection port is within the maximum of a diameter of a vortex core of a vortex that is formed when liquid droplets are ejected in the case without a projection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.