Illumination device for a copying machine
US4483609A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 9, 1982 |
| Grant date | Nov 20, 1984 |
| Priority date | — |
| Expiry date | Feb 9, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B27/542
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The device for illuminating an original document in a copying machine in which the original document is properly illuminated both when it is in contact with a platen and when it floats above the platen. A main reflector is disposed around a light source to produce an arc of illumination directed toward the platen. A primary reflector disposed within the periphery of the arc reflects a first beam toward the platen while a floating-original reflector, also disposed within the periphery of the arc, reflects a second beam of light toward the platen in a direction so as to illuminate the original document within a predetermined range of distance from the platen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.