Nec Corporation

Kouichi Furutou

Shigeki Muramatsu

Tooru Uchida

Kaname Nagatani

A reduction optical system including a lensand a mirror, a CCD image sensorand a frame including a frame memberfor accommodating the reduction optical system and the CCD image sensor are integrated to constitute an image reading unit, and the unitis covered with a cover member. A lampis provided on the cover memberand spatially isolated from the inner space of the unit. A slitof the cover memberis closed by a transparent memberThe lampemits the lightonto a documenton a document setting glass, and the reflected lightfrom the documententers the CCD image sensorthrough the transparent member, slit, slit', mirrorand the lensand is converted into electrical information, thereby reading image information of the document

Image reading apparatus

In a wire-driving system that drives and moves a movable unit along a guide path, a drive drum member is rotatably provided on the movable unit to be rotated around an axis which is perpendicular to a movement direction of the movable unit. An electric drive motor is provided in the movable unit and operationally connected to the drum member to be rotationally driven in either a first rotational direction or a second rotational direction. A wire cable has a first end and a second end, and is partially wound around the drum member such that a first cable section and a second cable section are extended from the drum member. The respective first and second ends of the wire cable are securely attached to two fixed points beside terminal ends of the guide path such that the first and second cable sections of the wire cable are tensionally extended along the guide path. The respective first and second cable sections of the wire cable are wound around and unwound from the drum member during the rotation of the drum member in the first rotational direction by the drive source, and the respective first and second cable sections of the wire cable are unwound from and wound around the drum member during the rotation of the drum member in the second rotational direction by the drive source, resulting in the movement of the movable unit along the guide path.

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Tokyo, Japan

Kouichi Furutou