Photocopying – Including fiber optics
Patent
1985-12-12
1987-05-19
Prescott, A. C.
Photocopying
Including fiber optics
355 11, 355 44, 355 45, G03G 1500
Patent
active
046662847
ABSTRACT:
A microfilm copying apparatus magnifies and copies images on microfilms. The microfilm copying apparatus can be constructed as a microfilm reader-printer. The microfilm copying apparatus has an illuminating optical system for illuminating a microfilm having an image to be copied and a slit exposure optical system having a projection lens. The illuminating optical system and the projection lens are movable in optically coaxial relation in a direction normal to a common optical axis thereof in synchronism with movement of the surface of the photosensitive body. Where the microfilm copying apparatus is constructed as a microfilm reader-printer, it has a screen housing unit disposed above a base apparatus portion and angularly movable into and out of contact therewith, and a light shielding plate is mounted on a first exposure mirror having a reflecting surface which is positioned in a focused light beam from the microfilm image when the microfilm image is copied. When the microfilm image is copied, external light from a screen is prevented by the light shielding plate from falling on the first exposure mirror.
REFERENCES:
patent: 4341463 (1982-07-01), Kashiwagi et al.
patent: 4367033 (1983-01-01), Watanabe
patent: 4494859 (1985-01-01), Frias et al.
patent: 4593996 (1986-06-01), Kubono et al.
Prescott A. C.
Ricoh & Company, Ltd.
LandOfFree
Microfilm copying apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Microfilm copying apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microfilm copying apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1560862