
A holding head including a support portion, a suction nozzle which applies a negative pressure to a back surface of an object and thereby holds the object, the suction nozzle being detachably attached to the support portion, and a back-surface lighting device which lights the back surface of the object held by the suction nozzle and which includes a main portion which is separate from the suction nozzle and is supported by the support portion such that when the suction nozzle is detached from th...











