Recording method comprising reacting cellulose fiber with a basic color former
US4070508A · kind A · utility
7Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 23, 1975 |
| Grant date | Jan 24, 1978 |
| Priority date | — |
| Expiry date | Apr 23, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/253
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A recording method and material employing a basic color former component which changes to a colored species by an interaction with a cellulose fiber and has a molecular extinction coefficient of not less than about 100 in an ethyl alcohol solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.