Ink cartridge with negative-pressure regulating mechanism
US6761440B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2002 |
| Grant date | Jul 13, 2004 |
| Priority date | — |
| Expiry date | Jun 20, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/17553
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink cartridge with negative-pressure regulating mechanism, comprising a first ink chamber, a second ink chamber and an regulating mechanism; the regulating mechanism is of a interlocking device composed of a damping device and a valve that, installed between the first ink chamber and the second ink chamber, is used for being the valve connecting the first ink chamber and the second ink chamber; when ink in the second ink chamber is being used, the inner pressure of the second ink chamber is to be lowered, thus activating the regulating mechanism, so that ink in the first ink chamber is led into the second ink chamber for stable replenishment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.