Patent ID: 7099728

Claim:
A quality control system which, throughout a life cycle of a product as it passes through processes of parts incoming, production, outgoing and market, carries out an inspection at each process, and collects and manages quality information, using an information recording medium, the quality control system comprising: a first recording means for recording the product ID unique to a given product in an information recording medium; and a first affixing means for affixing to the product, in an initial step of production, the information recording medium in which the product ID has been recorded; a second recording means for recording a part ID unique to a given part in an information recording medium; and a second affixing means for affixing to the part, when shipping the part, the information recording medium in which the part ID has been recorded; a first storage means for correlatively storing a product ID unique to a given product, this product ID being recorded in the information recording medium affixed to each product, and a part ID unique to a given part, this part ID being recorded in the information recording medium affixed to each part composing the product; a master code registering means in which are registered in advance, as systematized master codes, inspection items of inspection steps performed in the processes, and quality defect information items generated in connection with at least these inspections; a reading means for reading, during an inspection step in the processes, the product ID from the information recording medium affixed to a product being inspected; an input means for inputting quality information including inspection results and quality defect information, this quality information being input correlatively with the product II) that has been read by the reading means; a second storage means for storing the product ID and the quality information input from the input means; and wherein a quality history is managed for each product on the basis of the quality information stored in the second storage means.