Continuous variable magnification-type copying machine capable of enlarging and contracting an image
US4498759A · kind A · utility
15Cited by
2References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1982 |
| Grant date | Feb 12, 1985 |
| Priority date | — |
| Expiry date | Sep 23, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/041
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A continuous, variable magnification-type copying machine which is capable of enlarging and contracting an image includes a full-speed mirror, a half-speed mirror system and a single lens. A scanning starting position of the full-speed mirror, the half-speed mirror system, and the lens is controlled by a stepping motor to achieve desired enlarging and contracting magnifications of the image, as well as a life-size magnification of the image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.