A substrate standby unit that is capable of keeping only one substrate 4 on standby in a substrate sorting mechanism 40 that moves the substrate 4 from the print inspection device M2 to the component installation device M4, a memory device 60 that stores a substrate ID on the substrate 4 that is on standby in the substrate standby unit, and a substrate ID management unit 46 that updates the substrate ID that is stored in the memory device 60 accompanying the transfer of the substrate 4 from the print inspection device M2 to the substrate standby unit are included. The substrate ID stored in the memory device 60 and the inspection result data associated with this substrate ID and stored in an inspection result data memory unit 45 are transmitted to the component installation device M4.