Ink jet printer of the ink-on-demand type
US4589000A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 12, 1985 |
| Grant date | May 13, 1986 |
| Priority date | — |
| Expiry date | Aug 12, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/17596
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink-on-demand type ink jet printer includes an ink jet head assembly having a printer head and an ink container integrally joined to the printer head. The printer head includes a pressure chamber and ink supply and ejection flow passages communicating respectively therewith. The ink container includes therein a narrow air-bubble blocking tube opening directly into a lower portion of the interior of the ink container and which connects the ink supply flow passage to the ink container. A vent hole is defined in an upper portion of the ink container. The ink container includes a wall surface with the wall surface not trapping air bubbles, with a surface of the vent hole being coated with a defoaming agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.