Self-contained type pressure sensitive record sheet
US4680597A · kind A · utility
0Cited by
2References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 8, 1985 |
| Grant date | Jul 14, 1987 |
| Priority date | — |
| Expiry date | Aug 8, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/1555
- 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 microcapsules containing a color former and an inorganic solid acid as a color acceptor and drying the resulting coating, the mixture containing 10 to 30% by weight of polyvinyl alcohol based on the weight of the inorganic solid acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.