Ink cartridge having bellows valve, ink filling method and apparatus used thereof
US6929357B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2003 |
| Grant date | Aug 16, 2005 |
| Priority date | — |
| Expiry date | Apr 19, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/17523
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink cartridge, ink filling method and apparatus are disclosed. A one valve is disposed in the ink chamber of an ink cartridge and includes a foot support portion, a wall support portion projecting at an angle from the interior side of foot support portion, a shoulder support portion bending towards the interior side of wall support portion, and a head support portion projecting from shoulder support portion with a through hole. A valve sealing assembly being maintained selectively in contact with the head support portion through hole by a pressure difference. A sealing assembly integrally formed with a block portion is disposed at ink outlet port. The cartridge is very sensitive to pressure changes, which enhances printing quality. At the same time, the sealing assembly of the cartridge has an enhanced sealing function in non-usage status and usage status as well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.