Optical document reader

Details Optical document reader Optical document reader

1990-07-25

1992-03-31

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Picture signal generator

358488, 358474, 355235, 355233, H04N 104

Patent

active

051012871

ABSTRACT:
An optical document reader which uses a document keeper to hold a document in place on a document table and which moves an optical unit in the secondary scanning direction along a shaft for optically reading the document. The shaft is supported by a support member which rotates around one end of a support shaft and along the document table. The support member, externally rotated by an adjusting mechanism, is rotatably released by a clutch mechanism. A support member returning mechanism returns the support member to its home position when the member is rotatably released by the clutch mechanism. If the side edge of the document is inclined against that of the document table, the adjusting mechanism rotates the support member to align the optical unit with the document in the secondary scanning direction. When the clutch mechanism rotatably releases the support member afterwards, the support member returning mechanism accurately returns the member to its home position.

REFERENCES:
patent: 3541580 (1968-11-01), Saito
patent: 4809086 (1989-02-01), Horiya
patent: 4862218 (1989-08-01), Tsunoda et al.
patent: 4916483 (1990-04-01), Thompson et al.

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