Original illuminating apparatus
US5697696A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1996 |
| Grant date | Dec 16, 1997 |
| Priority date | — |
| Expiry date | Jun 19, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/70
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An original illuminating apparatus for use in a copying apparatus, an image reader, or a facsimile is provided with a fluorescent lamp having a long tube wall to illuminate an original; a heat radiating member provided at a position opposite to the original illuminating side of the fluorescent lamp; and a thermal coupling member which is close to the tube wall of the fluorescent lamp and the heat radiating member and is thermally coupled thereto. The thermal coupling member is provided within an effective light emission length in the longitudinal direction of the fluorescent lamp at a position different from the original illuminating side of the fluorescent lamp or on the side that is almost opposite to the original illuminating side of the fluorescent lamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.