Scanning system for copier

Details Scanning system for copier Scanning system for copier

1981-06-01

1983-01-04

Moses, Richard L.

Photocopying

Including fiber optics

355 11, 355 66, G03G 1528

Patent

active

043670342

ABSTRACT:
An optical system for a copying device is disclosed which scans a document lying in an object plane by means of a pivoting mirror and projects an image of the document onto the surface of a photoreceptor drum. By rotating the projection lens while simultaneously moving an aperture slit in a direction of movement opposite to the movement of the drum, a condition is constantly maintained wherein the object plane, lens plane and image plane are maintained parallel thereby eliminating field tilt. With this configuration, the image is also precessed onto the drum providing a precession distance which can be used to relax constraints normally imposed by scan return conditions.

REFERENCES:
patent: 3454335 (1969-07-01), Caldwell et al.
patent: 3650621 (1972-03-01), Lewis et al.
patent: 3901585 (1975-08-01), Bennett et al.
patent: 4056308 (1977-11-01), McCrobie
patent: 4076388 (1978-02-01), Bennett et al.
patent: 4232960 (1980-11-01), Glab

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