Optical scanning apparatus having means to stabilize optical uni

Details Optical scanning apparatus having means to stabilize optical uni Optical scanning apparatus having means to stabilize optical uni

1992-03-02

1993-03-16

Grimley, A. T.

Photocopying

Contact printing

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355 75, 355 76, 355233, 358474, G03G 1528

Patent

active

051948982

ABSTRACT:
An optical scanning apparatus for scanning image information of a document on a document support (D) and a scanning unit (50) being positively guided along a predetermined scanning path; characterized in that said scanning unit has bearing members (30) for making contact with a face of said document or document support and thereby determining the optical distance between that face and said focusing means (10), and in that said unit is mounted so that it is under biasing forces which maintain its said bearing members in running contact with said document or document support during a scanning movement of the unit.

REFERENCES:
patent: 4623937 (1986-11-01), Watanabe
patent: 4870502 (1989-09-01), Dreinhoff et al.
patent: 4982236 (1991-01-01), Bock
patent: 5081497 (1992-01-01), Agarwal et al.

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