Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1997-05-21
1999-03-09
Bareford, Katherine A.
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
427 97, 4272555, 427428, 4274343, 4274345, 118244, 118249, 118410, 118429, 34465, B05D 128, B05D 512
Patent
active
058797386
ABSTRACT:
An apparatus and method for treating the walls of apertures passing through a planar substrate with a fluid treatment solution. The method comprises placement of a pressurized fluid wedge beneath, above, or both beneath and above a planar substrate as it passes through a treatment chamber. The apparatus that forms the fluid wedge is a roller assembly comprising a roller within a shroud which carries fluid as it rotates through a gap between the roller and the shroud. The roller provides the dual function of forming the fluid wedge and conveying the planar substrate through the treatment chamber.
REFERENCES:
patent: 3535157 (1967-12-01), Steinhoff et al.
patent: 3561400 (1971-02-01), Smitzer et al.
patent: 4789405 (1988-12-01), Blasing et al.
patent: 4999079 (1991-03-01), Ash
patent: 5289639 (1994-03-01), Bard et al.
patent: 5374331 (1994-12-01), Costello
Gulla Michael
Kidd Charles R.
McKinnon Allan H.
Bareford Katherine A.
Goldberg Robert L.
McKinnon Allan H.
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