Liquid droplet ejecting head and liquid droplet ejecting apparatus
US8123335B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 2009 |
| Grant date | Feb 28, 2012 |
| Priority date | — |
| Expiry date | Jun 4, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/12
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A liquid droplet ejecting head of an aspect of the invention includes: a nozzle ejecting a liquid-droplet; a liquid flow path member in which a liquid is supplied toward the nozzle; a back-pressure generating unit applying back-pressure to the liquid in a liquid-flow-path toward the nozzle; a beam member joined together with or including the liquid flow path member, deforming to become concave in a liquid-droplet ejection direction, thereafter undergoing buckling reverse deformation to become convex in the ejection direction, and applying inertia to the liquid near the nozzle in the ejection direction, to cause the liquid near the nozzle to be ejected; an opening disposed on an opposite side of the liquid flow path member in the ejection direction and communicated with the atmosphere; a suction path whose suction opening is directed toward near the nozzle; and a negative-pressure generating unit generating negative-pressure in the suction path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.