Copying machine capable of continuously varying magnification

Details Copying machine capable of continuously varying magnification Copying machine capable of continuously varying magnification

1982-03-29

1984-08-07

Hayes, Monroe H.

Photocopying

Projection printing and copying cameras

Focus or magnification control

355 60, G03B 2770

Patent

active

044640463

ABSTRACT:
In a copying machine having an optical system for directing an image from a microfilm onto a photosensitive drum either of two fixed focus projecting lenses may be moved into alignment with the microfilm. Each projecting lens is provided with an adjustable drive system for moving the projecting lens along the optical axis thereof to vary the magnification. A plurality of mirrors are provided for reflecting the image received from said projecting lens onto the photosensitive drum. Two of the mirrors are supported at right angles to each other on a support member for reflecting an incident beam of light on one of the mirrors in a direction opposite and parallel to the incident light beam. A drive system is provided for moving the support member parallel to the incident light beam for varying the length of the optical path.

REFERENCES:
patent: 2100967 (1937-11-01), Levy
patent: 3779642 (1973-12-01), Ogawa et al.
patent: 3848996 (1974-11-01), Goding
patent: 3947188 (1976-03-01), Simpson
patent: 4060324 (1977-11-01), Wakatsuki

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