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    • 48. 发明公开
    • Original reading unit, image forming apparatus and image scanner
    • Vorlagenlesegerät,Bilderzeugungsgerätund Bildabtaster
    • EP1650949A1
    • 2006-04-26
    • EP05255745.1
    • 2005-09-15
    • SEIKO INSTRUMENTS INC.
    • Hirayama, Shinobu, c/o Seiko Instruments Inc.
    • H04N1/031
    • H04N1/02409H04N1/0313H04N1/1933H04N1/1934H04N2201/0241H04N2201/02412H04N2201/02414H04N2201/02418H04N2201/02429H04N2201/02447H04N2201/02449
    • An original reading unit is provided that is superior in the performance of the adjustment of line sensors.
      According to the present invention, between a unit base and a transparent original support plate, multiple sensor assemblies are arranged, to form a zigzag pattern, as a first array for reading an original and a second array for reading the original following the first array. Each of the sensor assemblies includes a sensor holder, a line sensor and a focus setup unit. Each of the sensor holders, which serve as fulcrums, are rotatable at a single pivot (a rotation center), along the wall of a unit base that is parallel to the original support plate. When the sensor holders are rotated and positioned at predetermined locations, they are fixed to the wall. The line sensors 51 are held, relative to the sensor holders, in the main scanning direction and in the sub-scanning direction, and are moved in an approaching or separating direction in which the line sensors approach or are separated from the wall and the original support plate. The focus setup units, each of which includes coil springs and spacers, move the line sensors 51 in the approaching or separating direction, and position the line sensors 51 at locations whereat focuses are adjusted.
    • 提供了一种在行传感器的调整性能方面优于原始读取单元。 根据本发明,在单元基座和透明原始支撑板之间,布置有多个传感器组件,以形成Z字形图案,作为用于读取原件的第一阵列和用于读取第一阵列之后的原稿的第二阵列。 每个传感器组件包括传感器保持器,线传感器和聚焦设置单元。 用作支点的每个传感器保持器沿着平行于原始支撑板的单元基座的壁在单个枢轴(旋转中心)处可旋转。 当传感器保持器旋转并定位在预定位置时,它们被固定在壁上。 线传感器51相对于传感器保持器在主扫描方向和副扫描方向上被保持,并且在线传感器接近或与壁分离的接近或分离方向上移动,原始 支撑板 聚焦设置单元,每个包括螺旋弹簧和间隔件,使线传感器51沿接近或分离的方向移动,并将线传感器51定位在调焦焦点的位置处。