Patent ID: 6940537
Filing Date: 2005-09-06
Classification: G01N,H05K

Abstract:
1. An inspecting apparatus of a printed state in a flexible printed circuit board, comprising: a working table; a substrate feeding-out unit; a first substrate inverting unit; a camera inspecting unit; a second substrate inverting unit; and a print-defect marking unit; wherein said substrate feeding-out unit, said first substrate inverting unit, said camera inspecting unit, said second substrate inverting unit, and said print-defect marking unit are sequentially placed on said working table along a moving direction of a flexible printed circuit board, wherein said first substrate inverting unit includes means for inverting the flexible printed circuit board and means for feeding out the flexible printed circuit board to said camera inspecting unit; wherein said camera inspecting unit includes detecting means for detecting the location of a print defect in the flexible printed circuit board, said detecting means including a first substrate supporting table which moves upward and downward with respect to the board moving direction, reciprocates along the board moving direction, and attracts the flexible printed circuit board onto the upper surface thereof when said first substrate supporting table moves upward, and a camera which is held above said first substrate supporting table by a holding mechanism and moves in a direction perpendicular to the board moving direction by a predetermined stroke, wherein said second substrate inverting unit includes means for inverting the flexible printed circuit board and means for feeding out the flexible printed circuit board between said print-defect marking unit and said camera inspecting unit; wherein said print-defect marking unit includes mark-applying means for applying a marking to the location of a print-defect in the flexible printed circuit board in accordance with a signal from said camera inspecting unit, said marking-applying means including a second substrate supporting table stationary in the board moving direction, and a laser marker which is held above said second substrate supporting table by a holding mechanism, reciprocates along the board moving direction, and moves in a direction perpendicular to the board moving direction by a predetermined stroke, and wherein operations of said first and second substrate inverting units, said first substrate supporting unit, said camera inspecting unit, and said print-defect marking unit are performed at the respective predetermined timings in conjunction with one another.