Patent ID: 6553905
Filing Date: 2003-04-29
Classification: B41F,B41P,H05K

Abstract:
A screen printing method, comprising:(A) a step of sliding a squeegee head with paste stored in the squeegee head on a mask plate, while said paste is pressurized, and printing said paste on a substrate through a pattern hole of said mask plate, and (B) separating said squeegee head with said paste stored therein from said mask plate, wherein said step of separating said squeegee head from said mask plate comprises the steps of: (1) discontinuing pressure application to said paste stored in said squeegee head, (2) horizontally moving said squeegee head by a predetermined distance while the bottom end portion of said squeegee head is abutted on said mask plate in a state of the pressure application being discontinued, and (3) moving said squeegee head upward off from said mask plate, and wherein, in the step of horizontally moving said squeegee head by a predetermined distance while the bottom end portion of said squeegee head is abutted on said mask plate in a state of said pressure application being discontinued, said paste sticking to said mask plate comes off said mask plate, and said paste becomes released from said mask plate, due to a step of pre-squeezing said squeegee head on said mask plate before said step (A) said paste pushed out into a printing space of said squeegee head is given a rolling motion, and the rolling motion of said paste causes said paste to be lowered in viscosity.