Photocopying – Projection printing and copying cameras – Focus or magnification control
Patent
1980-12-01
1982-09-14
Prescott, Arthur C.
Photocopying
Projection printing and copying cameras
Focus or magnification control
355 8, 350 63, G03B 2770, G02B 2717
Patent
active
043492711
ABSTRACT:
An image projecting system for transmitting the light rays carrying an image from a support for an original towards an image receiving member through a slit disposed adjacent the image receiving member comprises first, second and third plane reflective mirrors. These mirrors are supported for movement at different velocities in a direction of travel of light rays incident on the first mirror, but in synchronism with each other. During the movement of the first mirror, the reflective surface of the first mirror lies at a predetermined angle larger than 0.degree. but smaller than 90.degree. excepting 45.degree. relative to the above direction. The reflective surface of the second mirror lies at right angles to the above direction during its movement. The reflective surface of the third mirror lies at a predetermined angle, that is, 360.degree. less the first mentioned predetermined angle, relative to the above direction during its movement.
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patent: 3468817 (1969-12-01), Hubner
patent: 3740137 (1973-06-01), Sato
patent: 3752573 (1973-08-01), Miller
patent: 3884574 (1975-05-01), Dol et al.
patent: 3966319 (1976-06-01), Lang
patent: 3977260 (1976-12-01), Mihalik et al.
patent: 4126323 (1978-11-01), Ikeda et al.
patent: 4212532 (1980-07-01), Suzuki
patent: 4213690 (1980-07-01), Sugiura et al.
Toriumi Shiro
Watanabe Yutaka
Minolta Camera Kabushiki Kaisha
Prescott Arthur C.
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