Sustained release ink dispenser
US5136968A · kind A · utility
8Cited by
7References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 2, 1990 |
| Grant date | Aug 11, 1992 |
| Priority date | — |
| Expiry date | Jan 2, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249996
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink dispensing device is disclosed wherein the ink releasing member comprises two layers that serve different purposes. The layer which contacts a printing font is made of a porous material that has an open pore size of less than 30 microns and a porosity of 40% to 85%. The second layer is adjacent to the contact layer and is made from an elastic foam with larger pore size, in the range of 80 microns to 1000 microns and a porosity of greater than 70%. The second layer is impregnated with ink and acts as a reservoir for the first layer, the latter serving as a metering member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.