Inkjet printer nozzle arrangement having thermal actuator with inner and outer portion of inverse profile
US7901058B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 3, 2009 |
| Grant date | Mar 8, 2011 |
| Priority date | — |
| Expiry date | Jun 6, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/14475
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A nozzle arrangement for an inkjet printhead. The nozzle arrangement comprising a wafer substrate assembly defining an ink inlet channel; a static ink ejection structure extending from the substrate assembly and bounding the ink inlet channel; a pair of thermal bend actuators extending from the wafer substrate assembly on opposite sides of the static ink ejection structure, each actuator having an outer passive portion and an inner active portion, the inner active portion having a profile inverse of the outer passive portion; an active ink ejection structure comprising a roof defining an ink ejection port, and at least one sidewall which depends from the roof and surrounds the static ink ejection structure; and a pair of coupling structures coupling respective thermal bend actuators to the active ink ejection structure, the thermal bend actuators adapted to bend to move the active ink ejection structure relative to the static ink ejection structure, whereby ink contained within the ink ejection structure is ejected through the ink ejection port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.