Printhead with porous catcher
US7938522B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 2009 |
| Grant date | May 10, 2011 |
| Priority date | — |
| Expiry date | Aug 25, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/185
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A printhead includes a catcher and a negative pressure source. The catcher includes a liquid drop contact structure. The liquid drop contact structure includes a plurality of pores, each of the plurality of pores having a substantially uniform size when compared to each other. The plurality of pores have a critical pressure point above which air can displace liquid from the plurality of pores. The negative pressure source is in fluid communication with the plurality of pores of the liquid contact structure. The negative pressure source includes a pressure regulator to control the negative pressure such that the negative pressure remains below the critical pressure point of the plurality of pores of the liquid drop contact structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.