Ink jet cartridge with membrane valve
US6010211A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 6, 1996 |
| Grant date | Jan 4, 2000 |
| Priority date | — |
| Expiry date | Dec 6, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/17596
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink cartridge for an ink jet printer has a housing containing an ink storage space. An upper portion of the ink storage space is closed off by a cup-shaped membrane. A pressure reduction valve is built into a housing bottom. The storage space communicates via the pressure reduction valve with a chamber which has an opening sealed by a rubber plug. During installation of the cartridge in the print head, the rubber plug is pierced by a hollow needle so that ink may pass from the chamber to the print head. The reduction valve ensures a predetermined underpressure in chamber. This facilitates reliable operation of the print head, even with fluctuating ambient temperature, and provides efficient space utilization within the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.