Information input device

An information input device comprising:

• a chassis made of a non-metallic material having a depth of not more than 30 cm and a width of not more than 30 cm;
• an antenna mounted to an upper portion of the chassis;
• a fluctuation easing member which is mounted to a lower portion of the chassis to ease fluctuations in magnetic field intensity caused by a surface on which the information input device is mounted;
• and
• a reading face which is mounted to the upper portion of the chassis to scan an IC chip, wherein
• the antenna is disposed around the reading face to scan the IC chip mounted on the reading face and output intensity of the antenna is set to a level so that IC information is readable from the disposed IC chip no matter where on the reading face the IC chip is disposed,
• the fluctuation easing member is disposed on a bottom surface of the chassis and has a projection area larger than the antenna when looked from vertically above,
• the reading face is formed of a transparent sheet-shaped member and includes a region not smaller than the A6 size,
• the information input device further comprises:
• an image reading section which moves in a sub-scanning direction to optically scan a manuscript placed on the reading face;
• and
• an information acquisition section which wirelessly acquires information via the antenna from the IC chip attached to the manuscript placed on the reading face,
• the image reading section includes a light guiding member containing a non-metallic member and a light receiving element containing a metallic member,
• the light guiding member of the image reading section is disposed at a position close to the reading face, and
• the light receiving element of the image reading section is disposed at a position apart from the antenna by at least 10 mm.