Self-contained type pressure sensitive record sheet
US4486762A · kind A · utility
8Cited by
1References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 4, 1982 |
| Grant date | Dec 4, 1984 |
| Priority date | — |
| Expiry date | Nov 4, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/253
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A self-contained type pressure sensitive record sheet prepared by coating a substrate with a mixture of a color acceptor and microcapsules containing a color former in the form of a single layer and drying the resulting coating, the mixture containing 40 to 200 parts by weight, per 100 parts by weight of the microcapsules calculated as solids, of a pulp powder having a weight average fiber length of 20 to 80.mu., has well-balanced improved properties in respect of color forming ability, prevention of color smudging and printability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.