Screen printing method and apparatus therefor

Details Screen printing method and apparatus therefor Screen printing method and apparatus therefor

B - Operations, Transporting

41

F

B41F 15/46 (2006.01) B41F 15/44 (2006.01) G03F 5/00 (2006.01) H05K 3/12 (2006.01)

Patent

CA 2417989

A screen printing method optimised 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 supplying printing material from a chamber within the enclosed squegee structure to each of a plurality of paralleled plates acting as squeegee blades. Further, another configuration provides a convex blade portion farmed of shape memory alloy or the like which may be retracted to allow a narrow gauge blade portion to effect mufti-pitch printing and the like.

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