Method and device for positioning screen of screen printer

Abstract

Abstract PURPOSE:To simplify plate alignment operation by relatively conducting positioning on the next printing on the basis of the result of comparison acquired by recognizing both the circuit pattern of a substrate after correction and the printed pattern of the substrate by a recognition camera. CONSTITUTION:The circuit pattern of a substrate 2 after correction is recognized by a recognition camera 20 and printed, the printed pattern of the substrate 2 is recognized by the recognition camera 20, and the substrate 2 and a screen 24 are positioned relatively on the next printing on the basis of the result of comparison by a comparator of both recognized patterns. That is, both recognized patterns are compared and the quantity of displacement is computed by a computer, the quantity of displacement is stored in a storage device, and the screen 24 and the substrates 2 are aligned relatively by a controller on the basis of the quantity of displacement on the second screen printing and subsequent substrates 2. Accordingly, the relative alignment operation of the screen and the printed board is simplified.

Inventors

• 👤 Sadao Masuda
• 👤 貞男 増田
• 👤 Hideo Iida
• 👤 飯田　英雄
• 👤 Hiroshi Asaga
• 👤 浩 朝賀

Bibliographic Details