SUCTION DEVICE, PRINTING APPARATUS AND CONVEYANCE APPARATUS

To avoid the malfunction due to the suction failure.SOLUTION: A suction device comprises: a bed 21 on which a suction object 10 is mounted; a suction pump 21 which suctions the air through a plurality of suction holes 22 of the bed 21; an opening/closing valve 28 which is provided in each suction hole 22; a wind speed sensor 31 which detects the speed of the air flowing in each suction hole 22; determination means 203 which determines whether or not the wind speeds of the respective suction holes 22 within the suction range including the end of the suction object 10 to be suctioned of the bed 21 are the same; and printing operation control means 300 which stops the printing operation when the determination means 203 determines that the wind speeds of the respective suction holes 22 within the suction range are not the same.SELECTED DRAWING: Figure 5 【課題】吸着不良による不具合を回避できるようにする。【解決手段】吸着対象１０が載置されるベッド２１と、ベッド２１の複数の吸引孔２２を通じて空気を吸引する吸引ポンプ２１と、各吸引孔２２に設けられた開閉弁２８と、各吸引孔２２内の流れる空気の速度を検出する風速センサ３１とベッド２１の吸着される吸着対象１０の端部を含む吸着範囲内の各吸引孔２２の風速が同じであるか否かを判別する判別手段２０３と、判別手段２０３により吸着範囲内の各吸引孔２２の風速が同じでないと判別されたときに印刷動作を停止する印刷動作制御手段３００とを備えている。【選択図】図５