Method of detecting position of printed-wiring board

摘要

A method of detecting a position of a printed-wiring board (20) as held by a board supporting device (132; 400; 500) in a printed-wiring-board working system arranged to effect a working operation on a front surface (272) of the printed-wiring board, wherein at least one image-taking device (140; 404; 522) is operated to take an image of each of at last one indicium provided on a back surface (270) of the board as held by the board supporting device (132; 400; 500), and the position of the board is detected on the basis of a position of the image of each indicium in an imaging area of the image-taking device. Also disclosed are method and system for effecting a working operation on the board, using the detected position of the board.