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    • 33. 发明授权
    • Paper width detecting device
    • 纸宽检测装置
    • US6070048A
    • 2000-05-30
    • US178946
    • 1998-10-26
    • Ken NonakaTadayoshi Ikeda
    • Ken NonakaTadayoshi Ikeda
    • B65H1/00G03G15/00
    • G03G15/6514B65H1/00B65H2403/411B65H2511/12B65H2553/21G03G2215/00392G03G2215/00734
    • A device for detecting a width of a sheet placed on a manual feeding tray of an image forming apparatus includes a first and a second sheet regulating member for moving in a sheet width direction so as to come in contact with both sides of the sheet and for holding the sheet therebetween, thereby regulating movement of the sheet in the sheet width direction. A first rack member, on which a first rack is arranged in the sheet width direction, moves interlockingly with the first sheet regulating member. A second rack member, on which a second rack and a sheet width-detecting rack are respectively arranged in the sheet width direction, moves interlockingly with the second sheet regulating member. The second rack is positioned so as to face the first rack on the first rack member, and a pinion engages with the first rack and the second rack. A gear engages with the sheet width-detecting rack, and a rotary variable resistor is provided which has a shaft which is coaxially joined to the gear so as to regulate rotational displacement of the rotary variable resistor relative to the gear. The rotary variable resistor is rotated when at least one of the first and the second sheet regulating members is moved so as to hold the sheet therebetween, and the rotary variable resistor has a resistance value which is varied in accordance with a rotation angle thereof. A detector is provided for detecting the width of the sheet based on the resistance value of the rotary variable resistor.
    • 用于检测放置在图像形成装置的手动进给托盘上的片材的宽度的装置包括:第一和第二片材限制部件,用于在片材宽度方向上移动以与片材的两侧接触,并且 保持片材,从而调节片材在片材宽度方向上的移动。 第一齿条在片材宽度方向上布置有第一齿条,与第一片材调节构件互锁地移动。 第二齿条和第二齿条和片宽度检测齿条分别布置在片材宽度方向上,与第二片调节件互锁地移动。 第二齿条定位成与第一齿条构件上的第一齿条相对,并且小齿轮与第一齿条和第二齿条啮合。 齿轮与片材宽度检测架接合,并且设置有旋转可变电阻器,该旋转可变电阻器具有与齿轮同轴接合的轴,以便调节旋转可变电阻器相对于齿轮的旋转位移。 当第一和第二片材调节构件中的至少一个移动以便将片材保持在其间时,旋转可变电阻器旋转,并且旋转可变电阻器具有根据其旋转角度而变化的电阻值。 提供检测器,用于基于旋转可变电阻器的电阻值检测片材的宽度。
    • 36. 发明授权
    • Color image forming apparatus
    • 彩色图像形成装置
    • US5381167A
    • 1995-01-10
    • US962862
    • 1992-10-19
    • Yozo FujiiTadashi MiwaHisao SatohAtsushi OganeIsao MatsuokaTadayoshi Ikeda
    • Yozo FujiiTadashi MiwaHisao SatohAtsushi OganeIsao MatsuokaTadayoshi Ikeda
    • G03G15/01H04N1/047H04N1/113H04N1/12H04N1/50G01D15/14
    • G03G15/0152G03G15/0163H04N1/0473H04N1/506H04N1/1135H04N1/12H04N2201/0471H04N2201/04748H04N2201/04756H04N2201/04786
    • A color image forming machine includes a plurality of exposure units for irradiating an image carrier movable in a secondary scanning direction of the exposure units by primary scanning beams, at a plurality of irradiation positions to form latent images, a plurality of charging units for charging the image carrier corresponding to the irradiation positions of the exposure units and a plurality of developing units to form toner images corresponding the latent images. The plurality of toner images are superimposed on the image carrier to obtain a multi-color or full-color images trough transferring and fixing. A light-reflective registration mark is provided to a non-image area on one side of the image carrier. Employing at least two exposure units, irradiation by each primary scanning beam is conducted to the light-reflective registration mark moving in the secondary scanning direction. Each reflected beam from the registration mark is received by a plurality of photoreceptor sensors and then detection signals of a registration mark position are generated. Timing of writing by the primary scanning beam and a distance between bright lines formed on the image carrier by primary scanning beams of at least two exposure units are detected. The detected result is fed back to control the start timing of image writing and the driving of the image carrier.
    • 一种彩色图像形成机包括多个曝光单元,用于在多个照射位置处照射通过主扫描光束在曝光单元的副扫描方向上可移动的图像载体,以形成潜像;多个充电单元, 对应于曝光单元的照射位置的图像载体和多个显影单元,以形成对应于潜像的调色剂图像。 多个调色剂图像叠加在图像载体上,以通过传送和固定获得多色或全色图像。 光反射对准标记被提供给图像载体的一侧上的非图像区域。 使用至少两个曝光单元,每个主扫描光束的照射被传导到在二次扫描方向上移动的光反射对准标记。 来自对准标记的每个反射光束被多个感光体传感器接收,然后产生对准标记位置的检测信号。 检测由初级扫描光束写入的时序以及通过至少两个曝光单元的主扫描光束形成在图像载体上的亮线之间的距离。 反馈检测结果来控制图像写入的开始定时和图像载体的驱动。