Multi-sheet assembly using autogenous coating
US4425386A · kind A · utility
42Cited by
5References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 7, 1982 |
| Grant date | Jan 10, 1984 |
| Priority date | — |
| Expiry date | Jul 7, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S101/29
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A multi-ply business form comprising a plurality of sheets in superposed relationship wherein the top sheet comprises a support bearing a localized coating comprising both microscopic pressure rupturable capsules containing a chromogenic material, and an electron acceptor material. At least one underlying sheet can comprise a support bearing a second localized autogenous coating comprising chromogen-containing microscopic pressure rupturable capsules and an electron acceptor material on its upper surface wherein the localized autogenous coatings are non-coextensive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.