Nozzle plate maintenance for fluid ejection devices
US8870341B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2012 |
| Grant date | Oct 28, 2014 |
| Priority date | — |
| Expiry date | Oct 22, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/12
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink jet printhead includes: a nozzle plate having an underside and including one or more nozzles in the underside configured to dispense drops of fluid in a dispensing direction; and a multi-level maintenance structure coupled to the nozzle plate such that a gap exists between a portion of the maintenance structure and the underside of the nozzle plate. The maintenance structure includes: a first portion having a first upper surface suspended at a first distance from the underside of the nozzle plate; and a second portion that is coupled to the first portion, the second portion having a second upper surface suspended at a second distance from the underside of the nozzle plate, which is greater than the first distance, the second upper surface laterally displaced relative to the first upper surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.