Screen printing method and apparatus therefor

Abstract From the Canadian patent

A screen printing method optimized for screen printing of high density viscous compounds such, as conductive solder, for electronic circuit printing includes an enclosed type squeegee arrangement. The apparatus uilitzes interlocked driven component which my their motion further serve to pump printing material to the printing chamber. Various squeegee arrangements are possible in which squeegees of varying thicknesses are individually controlled for effecting mixed pitch printing operations. Further, movable plate members are disposed between the printing blades for effecting cleaning, agitating of printing material as well as selectively being enabled to act as printing blades and for …