| 摘要 |
PROBLEM TO BE SOLVED: To prevent a trouble of a discharge shutter while reducing the number of shutter sensors. SOLUTION: This device comprises the discharge shutter to be opened and closed by a control motor, which is provided in an opening part of a transfer device; and a shutter sensor for detecting that the discharge shutter is in a closed position. This device further comprises a shutter operation confirmation means. The shutter operation confirmation means inputs the presence/absence of shutter "close" output from the shutter sensor by the power-on to a control part or the like by a power input means, outputs a shutter "close" to the control motor when the shutter "close" output cannot be obtained, inputs the presence/absence of shutter "close" output from the shutter sensor after the lapse of a predetermined time t, determines the normality of the shutter when the shutter "close" output is obtained, and outputs an abnormality when the shutter "close" output cannot be obtained. COPYRIGHT: (C)2005,JPO&NCIPI
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