Patent ID: 6264090
Filing Date: 2001-07-24
Classification: B22F,B23K,H05K

Abstract:
An apparatus for depositing a selected pattern of solder droplets onto a substrate on which one or more components are to be mounted, the apparatus comprisinga substrate support having structure for supporting a substrate on which one or more components are to be mounted via pads deposited on said substrate,an ejector positioned relative to the substrate to eject droplets for deposit onto the substrate,said substrate and said ejector being relatively movable with respect to each other along a scan axis,an electrically conductive element, positioned adjacent to the droplets, for selectively applying charges to the droplets, andfield generating elements, positioned downstream of the conductive element, for defining an electrical field therebetween for selectively deflecting the charged droplets along a fan axis that is transverse to said scan axis;wherein said substrate has a substrate axis on which droplets are to be deposited, andwherein said substrate is oriented with respect to said fan axis so that said substrate axis makes an acute angle with said fan axis to permit droplets to be deflected along said fan axis and deposited on said substrate axis while said substrate and said ejector continuously move with respect to other along said scan axis.