| 摘要 |
PURPOSE: A badness detecting method of a printed circuit board is provided to test a laser equipment, becoming a badness cause, and a badness position by forming a mark at a dummy region of each sheet of a substrate. CONSTITUTION: In a badness detecting method of a printed circuit board, a plurality of sheets(22) are processed on a line of a panel(21). Each of the sheets(22) of the plurality has two piece regions(24a,24b) at which an actual electric device is mounted. A marking(26) for detecting a badness is formed at a dummy region(28) of the respective sheets(22) expect for the piece regions(24a,24b). The marking(26) displayed at each sheet(22) indicates a number of a laser equipment and a number of a corresponding sheet number. |
