Temperature compensated time exposure control circuit

Details Temperature compensated time exposure control circuit Temperature compensated time exposure control circuit

1983-07-19

1985-08-20

Grimley, A. T.

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Automatic regulation

355 14E, 355 30, H05B 3904

Patent

active

045366810

ABSTRACT:
A temperature compensated control circuit in an electrophotographic copy machine having a machine "ready" portion for presenting a machine ready condition and with which an intermediate copy sheet is used for exposure to the output of a light source including a time adjustable control circuit portion providing a time period during which the light source is energized. The time adjustable control circuit portion has a temperature sensitive element for shortening the time period as the temperature within the machine increases and for lengthening the time period as the temperature within the machine decreases. Such automatic temperature adjustment compensates the exposure time versus temperature relationship of the intermediate sheet.

REFERENCES:
patent: 3826569 (1974-07-01), Sakamaki

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