Humidity detecting device, and image forming apparatus...

Details Humidity detecting device, and image forming apparatus... Humidity detecting device, and image forming apparatus...

2011-03-01

2011-03-01

Porta, David P (Department: 2884)

Electrophotography

Control of electrophotography process

Having temperature or humidity detection

C399S094000, C399S097000, C073S335020, C073S335050

Reexamination Certificate

active

07899346

ABSTRACT:
The humidity detecting device includes a detection unit and a controller. The detection unit includes a humidity sensor for producing a humidity detection signal by detecting a humidity, a temperature sensor for producing a temperature detection signal by detecting a temperature surrounding the humidity sensor, and a common power supply line connected to the humidity sensor and the temperature sensor. The controller includes an application circuit for applying a power supply voltage to the humidity sensor and the temperature sensor through the common power supply line, a read circuit for producing a read-out humidity value corresponding to the humidity detection signal and a read-out temperature value corresponding to the temperature detection signal, and a correction circuit for correcting the read-out humidity value based on the read-out temperature value.

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JP Office Action dtd Jan. 19, 2010, JP Appln. 2008-018162, English Translation.

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