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    • 10. 发明授权
    • Ultrasonic wave sensor and image forming apparatus
    • 超声波传感器和成像设备
    • US09250591B2
    • 2016-02-02
    • US14563782
    • 2014-12-08
    • CANON KABUSHIKI KAISHA
    • Yasutaka YagiTsutomu IshidaTadashi OkanishiTeruhiko NamikiMotoyasu MuramatsuMasaki Kobayashi
    • G03B15/00G03G15/00
    • G03G15/5029G03G2215/00611G03G2215/00637G03G2215/00776
    • A sensor is attached to an apparatus having a fixing unit which fixes an image on a recording medium by heating the recording medium. The sensor includes: a transmission unit transmitting an ultrasonic wave to the recording medium; a reception unit receiving the ultrasonic wave via the recording medium, and output a signal corresponding to the received ultrasonic wave; and a detecting unit detecting information relating to a state of the recording medium which has changed by passing through the fixing unit, based on a first signal which the reception unit has output upon having received the ultrasonic wave before the recording medium has passed through the fixing unit, and a second signal which the reception unit has output upon having received the ultrasonic wave after the recording medium has passed through the fixing unit.
    • 传感器附接到具有固定单元的装置,该定影单元通过加热记录介质将图像定影在记录介质上。 传感器包括:发送单元,向记录介质发送超声波; 接收单元,经由记录介质接收超声波,并输出与所接收的超声波对应的信号; 以及检测单元,基于在所述记录介质已经通过所述定影之前已经接收到所述超声波而输出的所述接收单元输出的第一信号来检测与通过所述定影单元已经改变的所述记录介质的状态相关的信息 单元,以及接收单元在记录介质通过定影单元之后已经接收到超声波而输出的第二信号。