Konica Corporation

Kouichi Hanada

Akira Kosugi

Kiyohari Nakagama

In a device for sensing a temperature of a fixing roller, a thermistor is provided on a flat upper surface of a support member made of a foamed silicone material, with a heat conductive material provided between them. A heatproof protective sheet is wrapped around so that the thermistor is partially sunk into the support member by the tightness of the wrapping. The heat conductive material is thereby deformed to the thermistor's shape. At the same time, the top part of the thermistor is always protruded from the upper part of the support member. A holder keeps this construction in contact with the circumferential surface of the fixing roller.

Temperature sensing device for a rotating fixing roller

A sheet stacking mechanism for use in apparatuses wherein an image is recorded on both sides of a recording sheet, including a bumper roller which is capable of retractably shifting to a downward position to be in pressure contact with the recording sheets on an intermediate tray and transport the recording sheets to a stopper where the leading edges thereof are aligned and, a sensor and control device for controlling the position of the roller so that the roller is shifted downward onto the recording sheet to be aligned when the sheets reach the tray, and raised out of contact with the sheets when the leading edges reach the stopper.

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Hachioji, Japan

Kouichi Hanada