Device for ink refill of a reservoir in a print cartridge
US5510820A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1992 |
| Grant date | Apr 23, 1996 |
| Priority date | — |
| Expiry date | Apr 22, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/17506
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink refill device includes a body having a chamber with ink therein. The chamber has one wall formed of a frangible material. The body has a needle communicating the chamber with a reservoir, which has a foam of a controlled porosity therein, in a print cartridge when the needle is inserted in a vent of the reservoir to fill the reservoir. Breaking of the frangible wall of the chamber with the needle extending downwardly enables ink to flow from the chamber at a controlled flow rate to the reservoir in the cartridge. In the preferred embodiment, the needle has one or more notched openings adjacent its distal end to increase its surface area through which ink flows to increase flow of ink to the reservoir.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.