| 摘要 |
PROBLEM TO BE SOLVED: To always operate an exhaust fan in an optimum operation condition from economical and work-environmental aspects with regard to a printing machine dryer system. SOLUTION: The system has a dryer 1 for drying a print 3 by hot air, the exhaust fan 4 for sucking/discharging ink components evaporated from the print 3 into the dryer 1 by the drying, a pressure detector 12 for detecting the pressure of the dryer 1, and a controller 13 for controlling the rotation of the fan 4 based on the output from the detector 12 so that the dryer 1 has a prescribed negative pressure.
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