image input device

Abstract

Abstract PURPOSE:To obtain a high performance device which is made more small-sized and has a smaller number of parts, by providing a high precision and a high reliability with simpler mechanisms and using a linear motor, whose occupied area is small, as the driving mechanism. CONSTITUTION:A linear motor 1 is constituted including an angular bar-shaped stator 2 and a needle 3, and the stator 2 is fixed to the center part of a casing 5 so that it is parallel with the surface of an original and the original subscanning direction. An image pickup unit 6 consists of a light source 7, a light leading system 8, and a light source conversion unit 9 including a solid-state image pickup element and a signal processing circuit, and this unit 6 is fixed to the needl 3 so that it is parallel with the original surface and is orthogonal to the original subscanning direction. Since transmission mechanism parts such as wires, pulleys, gears, etc. and many mechanism parts for supporting or fixing them are unnecessary for driving of the image pickup unit and spaces occupied conventionally by leading-around of wires, installations of pulleys and gears, etc. are unnecessary, the device is made more small-sized and light- wright. The positon precision, the linearity, the reproducibility, etc. are dependent upon the precision of the linear motor itself and the capacity of an electronic circuit driving and controlling the linear motor because the image pickup unit is directly driven linearly, and therefore, the device is not affected by the conventional frictional loss or the like generated by wire expansion/contraction and transmission mechanisms, and the reduction of the life and the noise caused by them are prevented.

Inventors

• 👤 Shuichi Yoshida
• 👤 修一 吉田
• 👤 Takeshi Shimamoto
• 👤 嶋本　健
• 👤 Shingi Yokobori
• 👤 横堀　進義
• 👤 Yoshihiro Yokoyama
• 👤 嘉広 横山

Bibliographic Details