Image-forming medium coated with microcapsule layer for forming image
US6746984B2 · kind B2 · utility
4Cited by
7References
40Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2000 |
| Grant date | Jun 8, 2004 |
| Priority date | — |
| Expiry date | Oct 29, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/34
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In an image-forming medium, a sheet of paper is coated with a layer of microcapsules which is composed of a binder material and a plurality of microcapsules filled with dye and uniformly distributed in the binder material. The binder material exhibits a predetermined thermal melting point, and the microcapsules exhibit a pressure-breaking characteristic so as to be squashed and broken under a predetermined pressure when said binder material is thermally softened or melted. When a leuco-pigment-based dye is used, a color developer is substituted for the binder material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.