Image reading apparatus having different reading speeds

Details Image reading apparatus having different reading speeds Image reading apparatus having different reading speeds

1991-09-26

1995-02-21

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358486, 358496, 355 23, 355 24, 355 35, H04N 104, G03B 2732, G03B 2772

Patent

active

053921356

ABSTRACT:
An image reading apparatus having different reading speeds includes carrying structure for carrying an original at one of first and second speeds, the first speed being lower than the second speed. Reading circuitry is provided for reading an image from at least one of the front face and the rear face of the original being carried by the carrying structure, and for supplying an image signal representing the read image. Control circuitry is provided for changing the speed of the carrying means. In one aspect, the speed is changed depending upon whether one face or both faces of the original are to be read. According to another aspect, a level of the image signal representing the read image is changed depending upon the speed of the carrying structure.

REFERENCES:
patent: 4743974 (1988-05-01), Lockwood
patent: 4839740 (1989-06-01), Yoshida
patent: 4949189 (1990-08-01), Ohmori
patent: 4951160 (1990-08-01), Nagahara et al.
patent: 5136665 (1992-08-01), Inoue

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