Ink cartridge for ink jet recording apparatus, connection unit and ink jet recording apparatus
US6585358B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 16, 2001 |
| Grant date | Jul 1, 2003 |
| Priority date | — |
| Expiry date | Feb 16, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/17596
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink cartridge (1) for supplying the ink in an ink reserving chamber (3) via an ink supply port (4) into a recording head (21) has a differential pressure valve mechanism (5) disposed between an ink flow port (7) and the ink supply port (4) in the ink reserving chamber (3), whereby the ink is supplied an adequate amount to the recording head (21) by opening or closing the differential pressure valve mechanism (5) in accordance with an ink pressure of the recording head (21). As a result, it is possible to supply the ink at a substantially constant pressure to the recording head without regard to the variation in the amount of ink or the movement of the carriage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.