Image reader

Details Image reader Image reader

1988-12-22

1990-03-27

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358227, 358475, H04N 1393

Patent

active

049125672

ABSTRACT:
An image reader comprising a variable magnification system for moving a lens disposed between an image of a document and an image sensor is disclosed. The focus adjustment is performed by moving the image sensor in a direction parallel to an optical axis of the lens. An initializing processing is finished without the focus adjustment in case the image formed on the image sensor is in the infocus condition when the power is supplied to the image reader and the magnification is the equal last magnification.

REFERENCES:
patent: 4464681 (1984-08-01), Jacobs et al.
patent: 4614977 (1986-09-01), Kawahara et al.
patent: 4660094 (1987-04-01), Yoshimoto et al.
patent: 4687944 (1987-08-01), Mitsuka et al.
patent: 4751376 (1988-06-01), Sugiura et al.

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