Patent ID: 8186047

Claim:
A method of mounting an electronic component, comprising: picking up a plurality of electronic components from a component feeding unit by suction using a plurality of suction nozzles of a mounting head; detecting postures of the electronic components held by the suction nozzles of the mounting head; releasing one of the electronic components that is held by one of the suction nozzles of the mounting head and judged improper as a result of the detecting; taking, after the releasing of said one of the electronic components held by one of the suction nozzles of the mounting head, images of electronic components that are held by the suction nozzles of the mounting head and judged proper as the result of the detecting using a component recognition camera; performing a recognition processing to the images taken by the component recognition camera; releasing another of the electronic components that is held by another of the suction nozzles of the mounting head and judged improper as a result of the recognition processing; mounting on a printed board electronic components that are held by the suction nozzles of the mounting head and judged proper as the result of the recognition processing after the releasing of said another of the improper electronic components held by another of the suction nozzles of the mounting head; and after the mounting the electronic components, repeating the steps of the picking up of the electronic components, the detecting of the postures, the taking of the images and the performing of the recognition, wherein the electronic components judged proper by the detecting and the recognition processing are mounted on the printed board for a second time and the electronic components judged improper by the detecting or the recognition processing are released after the second mounting.