Projection printer
US4433902A · kind A · utility
0Cited by
14References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 12, 1981 |
| Grant date | Feb 28, 1984 |
| Priority date | — |
| Expiry date | Nov 12, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/4655
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A non-impact printing method wherein pulsed light is transmitted through a mask containing enlarged characters. The characters are optically reduced and are focused on a document in back of a heat-sensitive or thermal magnetic ink ribbon. Heat energy projected by the pulsed light causes ink transfer from the ribbon onto the paper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.