Process of producing a printing plate for a stamp
US5611279A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 1995 |
| Grant date | Mar 18, 1997 |
| Priority date | — |
| Expiry date | Jun 2, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41C1/055
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A stamp and a process of producing a stamp includes a stamp that is made from a sponge having open cells to allow repeated impressing operations without supplying stamp ink for a long time. The process includes fitting a heat-fusing ink sheet or a heat-generating plate, which contains a heat-generating material, over the surface of a stamp-piece that has open cells therein. A liquid substance soaks a manuscript having characters, patterns, etc., which are represented by non-applied areas of recording material. The manuscript is placed over the top in such a manner that an image may appear to be a mirror image. The manuscript is irradiated from above with light to cause light to pass through the non-applied areas of recording material to increase the temperature of the heat-generating material at sites corresponding to the non-applied areas of recording material. The generated heat of the heat-generating material corresponding to the non-applied portion of recording material fuses that part of the surface of the stamp-piece, thereby forming non-oozing areas of stamp ink while the stamp surface portion corresponding to the applied areas of recording material is not fused, thus formin…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.