Teco Image Systems Co., Ltd.

Pen-Jung Lee

The present invention provides a self-propelled image read module, which comprises a sensor, a guide rod, a motor, a gear set, and a belt. The guide rod is fixed on a base of a scanner. The sensor is slidably matched on the guide rod. The motor is disposed at one side of the sensor. The gear set is connected to the motor. The belt is fixed on the base. The belt passes through between and contacts a transmission wheel and an idle wheel of the gear set. Thereby, a scanner's image read module of simple assembly, low cost, and small size is formed.

Self-propelled image read module

A scanner includes a sensor rack carrying a sensor, and a guide rod adapted to guide reciprocating movement of the sensor rack, the sensor rack having a guide frame disposed at a bottom side thereof in contact with the guide rod, the guide frame having a double-bevel bottom sidewall formed of two bevel surfaces, which are respectively disposed in contact with the guide rod.

Scanner

A change gear transmission device for a scanner comprises a motor, a first gear, a second gear and a third gear. The second gear and the third gear are movably arranged within the scanner and can be moved in axial direction. The first gear is coaxially connected with the motor. The second gear and the third gear are arranged on one end of the driving shaft of the scanner and have different tooth number. The first gear is optionally engaged with the second gear or the third gear by the movement of the second gear and the third gear. In a preferred embodiment of the device, the second gear is a spur gear and the third gear is an indent gear (ring gear). Therefore, the inventive change gear transmission device can provide both high speed and high accuracy ability to the scanner with low/high resolution.

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Taoyuan Hsien, Taiwan

Pen-Jung Lee