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    • 6. 发明申请
    • LIQUID DROP DISCHARGE HEAD INSPECTING DEVICE AND LIQUID DROP DISCHARGE DEVICE
    • 液体放电头检测装置和液体放电装置
    • US20100091063A1
    • 2010-04-15
    • US12449044
    • 2008-01-17
    • Takeshi Nagata
    • Takeshi Nagata
    • B41J29/393G01N21/00
    • B41J29/393B41J2/16579
    • This ink jet application device (10) includes an optical sensor (20) and a control unit (30) . The optical sensor (20) has a light emission unit (32) which emits a detection beam (100) so as to intersect the path of travel of liquid drops, and a light reception unit (34) which receives this detection beam (100). The optical sensor (20) performs emission and reception of the detection beam (100) in at least a first position in which a portion of the detection beam (100) is intercepted by a nozzle plate (26), and a second position which is positioned lower than the nozzle plate (26) by just a distance which corresponds to the gap between the nozzle plate (26) and an object to be processed. And, on the basis of the state of light reception by the light reception unit (34), the control unit (30) detects the presence or absence of an obstruction between the light emission unit (32) and the light reception unit (34).
    • 该喷墨应用装置(10)包括光学传感器(20)和控制单元(30)。 光传感器(20)具有发射检测光束(100)以与液滴的行进路径相交的发光单元(32)和接收该检测光束(100)的光接收单元(34) 。 光传感器(20)在检测光束(100)的一部分被喷嘴板(26)遮挡的至少第一位置进行检测光束(100)的发射和接收,第二位置是 定位在喷嘴板(26)的下方仅与喷嘴板(26)和待处理物体之间的间隙对应的距离。 并且,根据受光部(34)的光接收状态,控制部(30)检测发光部(32)与光接收部(34)之间是否存在障碍物, 。