Dual layer self-contained paper incorporating hollow spherical plastic pigment
US6514909B1 · kind B1 · utility
4Cited by
10References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2000 |
| Grant date | Feb 4, 2003 |
| Priority date | — |
| Expiry date | Dec 15, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/002
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A self-contained sheet for forming an image comprising a support, a first layer of microcapsules containing a color precursor of the electron donating type in a carrier liquid on the surface of the support, a layer of microspheres overlying the microcapsule layer, and a developer material present in at least one of the microcapsule layer or microsphere layer, wherein the developer material can react with the color precursor to form a visible image when the color precursor is released from the microcapsules.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.