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    • 4. 发明申请
    • IMAGE FORMING APPARATUS
    • 图像形成装置
    • US20110148035A1
    • 2011-06-23
    • US12951459
    • 2010-11-22
    • Ryoichi YAMAMOTOHiroyuki MaedaNaoki NonoyamaKuniaki OhbayashiRyo Hirano
    • Ryoichi YAMAMOTOHiroyuki MaedaNaoki NonoyamaKuniaki OhbayashiRyo Hirano
    • B65H7/02B65H5/06
    • B65H7/02B65H5/062B65H2220/09B65H2404/14B65H2511/20B65H2513/104B65H2515/32B65H2801/06B65H2220/01B65H2220/02B65H2220/11
    • An image forming apparatus comprising a first pair of rollers for feeding a print medium; a second pair of rollers for feeding the print medium, the second pair of rollers being disposed downstream in a print medium feeding direction from the first pair of rollers; a first detector for detecting the print medium slack in a specified degree by contact with the print medium, the first detector being disposed between the first pair of rollers and the second pair of rollers; a second detector for detecting either the first pair of rollers or the second pair of rollers need a specified value of driving torque; and a controller for controlling either a feeding speed at which the print medium is fed by the first pair of rollers or a feeding speed at which the print medium is fed by the second pair of rollers based on either outputs from the first detector or outputs from the second detector. If the first detector detects the print medium slack in the specified degree earlier than the second detector detects the first pair of rollers or the second pair of rollers need the specified value of driving torque after feeding of the print medium starts, the controller controls the feeding speed based on outputs from the first detector, and if the second detector detects the first pair of rollers or the second pair of rollers need the specified value of driving torque earlier than the first detector detects the print medium slack in the specified degree after feeding of the print medium starts, the controller controls the feeding speed based on outputs from the second detector.
    • 一种图像形成装置,包括用于馈送打印介质的第一对辊; 用于供给打印介质的第二对辊,第二对辊设置在从第一对辊的打印介质输送方向的下游; 第一检测器,用于通过与打印介质接触而以特定的程度检测打印介质松弛,第一检测器设置在第一对辊和第二对辊之间; 用于检测第一对辊或第二对辊的第二检测器需要指定的驱动扭矩值; 以及控制器,用于基于来自第一检测器的输出或输出的输出来控制由第一对辊子供给打印介质的进给速度或由第二对辊子供给打印介质的进给速度 第二个检测器。 如果第一检测器在比第二检测器检测到第一对辊之前检测到打印介质松弛,或者第二对辊在进给打印介质开始之后需要驱动转矩的指定值,则控制器控制进给 基于来自第一检测器的输出的速度,并且如果第二检测器检测到第一对辊或第二对辊需要比第一检测器更早地检测到打印介质松弛在特定程度后的驱动转矩的指定值, 打印介质开始,控制器基于来自第二检测器的输出来控制进给速度。