Efficient fluid filtering device and an ink jet printhead including the same
US6199980A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1999 |
| Grant date | Mar 13, 2001 |
| Priority date | — |
| Expiry date | Nov 1, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/14403
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An efficient fluid filtering device is provided for filtering unwanted contaminants from flowing fluid, such as ink flowing into an ink jet printhead. The efficient fluid filtering device includes a generally flat member having a first side and a second side, and a series of fluid flow holes formed through the flat member from the first side to the second side. Importantly, the efficient fluid filtering device also has a series of pillar members, including pillar members defining a trough portion around each fluid flow hole. The pillar members and the trough portions are arranged around each hole so as to efficiently prevent bubbles and contaminants in flowing fluid from impeding fluid flow from the first side through to the second side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.