Recorders – Printing – dotting – or punching marker – Ink transfer support or moving means
Patent
1991-02-19
1993-03-02
Grimley, A. T.
Recorders
Printing, dotting, or punching marker
Ink transfer support or moving means
346108, 355 30, 355246, G03B 2752, G03G 2100
Patent
active
051913623
ABSTRACT:
An electrophotographic printing apparatus comprises an electrifying unit for electrifying a surface of a photosensitive drum, an exposing unit for selectively exposing the photosensitive drum to form an electrostatic latent image, a developing unit for developing the electrostatic latent image, a transferring unit for transferring the developed image to a paper sheet, a deelectrifying unit for removing unnecessary charges left on the surface of the photosensitive drum after the image transfer, thereby enabling the surface to be electrified again. The printing apparatus further comprises a thermal sensor for measuring an environmental temperature of the photosensitive drum, and a control circuit for detecting to which one of a plurality of continuous temperature ranges, the measured temperature belongs, and for controlling the exposing unit such that the amount of exposure decreases as the detected temperature range increases, and for controlling the developing unit such that the amount of a developer being fed is decreased as the measured temperature increases within the detected temperature range.
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Grimley A. T.
Ramirez Nestor R.
Tokyo Electric Co. Ltd.
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