Imaging reading apparatus having a preheating system

Details Imaging reading apparatus having a preheating system Imaging reading apparatus having a preheating system

1990-06-06

1992-08-18

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Picture signal generator

358406, 35821316, 355 30, 355 69, 250238, G03B 2752, G03B 2772

Patent

active

051404451

ABSTRACT:
An image sensor is operable in a read state, a rest state, and a stand-by state. Control signal generating means generate a control signal. The control signal has a first constant preset level during the read state, a second preset level during the rest state, and alternates between the first and second levels at a duty ratio during the stand-by state. Drive circuit means transfer current to the image sensor in response to the control signal. Therefore, current is continuously transferred to the image sensor during the read state, no current is transferred during the rest state, and current is intermittently transferred to the image sensor at the duty ratio during the stand-by state.

REFERENCES:
patent: 4497568 (1985-02-01), Koyima et al.
patent: 4739409 (1988-04-01), Baumeister
patent: 4827313 (1989-05-01), Corona
patent: 4887122 (1989-12-01), Morikawa
patent: 5029311 (1991-07-01), Brandkamp et al.

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