Pressure controlled ink jet printhead assembly
US6817707B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 2003 |
| Grant date | Nov 16, 2004 |
| Priority date | — |
| Expiry date | Jun 18, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/17553
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink jet printhead assembly for a pressure controlled ink jet printhead. The assembly includes an ink reservoir made of a first material having a first melting point and having an open top cavity defined by sidewalls, a bottom wall and a peripheral edge. A pressure control structure made of a polymeric material having a second melting point lower than the first melting point is included. The pressure control structure has a first surface, a second surface opposite the first surface, a side surface, and an aperture therein. A sealing structure for forming a liquid tight seal is provided between the sidewalls of the ink reservoir and the side surface of the pressure control structure. A pressure regulating film is attached over the aperture to the first surface of the pressure control structure. A cover is attached to the ink reservoir.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.