Illuminating device for a color copier
US4866478A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 29, 1988 |
| Grant date | Sep 12, 1989 |
| Priority date | — |
| Expiry date | Feb 29, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B27/542
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A slit exposure type illuminating device mainly applicable to a color electrophotographic copier and using a plurality of lamps includes a single reflector which is provided with a plurality of openings for inserting the lamps. The lamps are arranged in an array along the length of the reflector. One of the lamps is positioned on an optical axis which extends through the center of the reflector with respect to the lengthwise direction of the reflector. The lamps are divided into a first and a second lamp groups in each of which they are arranged symmetrically with respect to the optical axis and individually spaced by predetermined distances from the optical axis. Current is fed either independently or simultaneously to the two different lamp groups. The openings of the reflector are each so adjustable in position and dimension as to prevent the bulb of each lamp from intercepting light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.