Controlled velocity transport precession system

Details Controlled velocity transport precession system Controlled velocity transport precession system

1981-05-11

1982-09-28

Moses, R. L.

Photocopying

Including fiber optics

G03G 1528

Patent

active

043516050

ABSTRACT:
An optical imaging system for scanning a document moving through an exposure zone. The imaging system comprises optical components including a mirror arrangement and a projection assembly for projecting reflected document images onto a flat portion of a photoreceptor. The optical components are stationary in a first mode of operation wherein documents are stream fed past the exposure zone at the process speed. In a second mode of operation, wherein multiple copies are made of the same document, the optical components are moved in a defined relationship so that the image is projected onto the photoreceptor in a direction opposite to the direction of photoreceptor motion. This form of image projection is termed image precession and results in additional time being available to replace the document at the start of scan portion without reduction in copy reproduction rate.

REFERENCES:
patent: 3454335 (1969-07-01), Caldwell et al.
patent: 3650621 (1972-03-01), Lewis et al.
patent: 3754822 (1973-08-01), Melrose
patent: 4232960 (1980-11-01), Glab
patent: 4285590 (1981-08-01), Silverberg

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