Photocopying – Contact printing – Light boxes
Patent
1995-06-05
1996-06-25
Pendegrass, Joan H.
Photocopying
Contact printing
Light boxes
355215, G03G 1500
Patent
active
055305237
ABSTRACT:
An electrophotographic apparatus with an endless photosensitive member such as a photosensitive drum. The electrophotographic apparatus includes a dew condensation preventing device for preventing dew condensation on the photosensitive member, a temperature sensor for detecting a temperature in the vicinity of an outer surface of the photosensitive member, and a humidity sensor for detecting a humidity in the vicinity of the outer surface of the photosensitive member. The electrophotographic apparatus further includes a calculating unit for calculating a water vapor density having a given functional relationship with temperature and humidity, according to the temperature detected by the temperature sensor and the humidity detected by the humidity sensor, a storing unit for storing a preset control value, and a control unit for controlling the dew condensation preventing device according to the water vapor density calculated by the calculating unit.
REFERENCES:
patent: 4367036 (1983-01-01), Sakamaki et al.
patent: 4982225 (1991-01-01), Sakakibara et al.
patent: 5144366 (1992-09-01), Sakamoto et al.
Fujitsu Limited
Grainger Quana
Pendegrass Joan H.
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