Slit illumination system for copying machine
US3982116A · kind A · utility
26Cited by
7References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 5, 1975 |
| Grant date | Sep 21, 1976 |
| Priority date | — |
| Expiry date | Aug 5, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B27/542
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In an electrostatic copying machine, an original document is scanned by moving an original document over an illuminated slit. The system for illuminating the slit comprises an elongated light source and a first elliptic cylindrical mirror having a focus coincident with the axis of the light source to reflect light from the source into the slit. A second elliptic cylindrical mirror has a focus common with the first mirror and reflects light from the source parallel to the slit. A plane mirror reflects the light reflected from the second mirror into the slit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.