A screen printing apparatus includes a pair of clampers that clamp a substrate, a mask plate contacted to the substrate, a pair of squeegees provided above the mask plate vertically, and a squeegee controller that selectively controls one of the pair of squeegees to move in the horizontal direction in abutment against the mask plate so that the selected one of the pair of squeegees slides on the mask plate.

A printing device including a conveyance rod which discharges and introduces a screen mask and a board support member; and a control section. The control section performs a mask exchange process including a mask discharge process of discharging the screen mask to be discharged and a mask introduction process of introducing the screen mask to be introduced by controlling a conveyance rod. In addition, the control section performs a support member exchange process including a support member discharge process of discharging the board support member to be discharged and a support member introduction process of introducing the support member to be introduced by controlling the conveyance rod.

A conveyor system for a stencil printer includes a pair of rail members, with the pair of rail members extending through a frame and configured to transport the substrate through the stencil printer. The conveyor system further includes, for each rail member, a lift tool assembly coupled to the rail member. The lift tool assembly includes a lifter portion, a main plate secured to the lifter portion, and a clamping member coupled to the main plate. The clamping member is configured to move horizontally between a substrate engaged position and a substrate disengaged position. The lift tool assembly further includes a thin foil coupled to the main plate. The thin foil is configured to move vertically and horizontally, independent from the clamping member.

A conveyor system for a stencil printer includes a pair of rail members extending through a frame and configured to transport the substrate through the stencil printer. A lift tool assembly is configured to support the substrate at a transport height and a print height. The lift tool assembly includes a lifter portion configured to be engaged by a support of the lift table assembly. A foot of the lifter portion has at least two permanent magnets configured to secure the foot of the lifter portion to the support when engaging the support to the lifter portion, and at least one vacuum pocket formed in a bottom surface of the foot of the lifter portion. The vacuum pocket is configured to selectively secure the lifter portion in place on the support.

An electrostatic screen printer includes: an electrically conductive screen arranged in non-contact with a printing medium; sponges for rubbing a powder into the screen; and a direct current power source for applying a voltage to the printing medium and the powder, wherein the powder rubbed into the screen is adhered to the printing medium by electrostatic induction. The electrostatic screen printer includes a rotation mechanism for rotating the sponges, a parent revolution mechanism for parent revolution of the sponges, and a child revolution mechanism for child revolution of the sponges. The revolution speed ratio of the child revolution to the parent revolution may preferably be 4.0 or greater, a scraper is provided on the parent revolution mechanism so as to be interlocked with the revolution of the sponges, and the scraper is arranged so as to scrape the powder on the screen toward an axis of the parent revolution because of the interlocking.

An apparatus includes a frame, a unit coupled to the frame and configured to deposit material on the electronic substrate, and a substrate support assembly coupled to the frame. The substrate support assembly is configured to support the electronic substrate. The substrate support assembly includes a worktable and a fixed support secured to the worktable. The fixed support extends from a first edge of the worktable to a second edge of the worktable. The substrate assembly further includes an adjustable support releasably secured to the worktable. The adjustable support extends from the first edge to the second edge and spaced from the fixed support. The substrate assembly further includes at least one guide mechanism configured to releasably secure the adjustable support in place on the worktable.

A dual function tooling tray having a movable center section includes a perimeter frame having four sides, a first frame member spaced from a first side of the perimeter frame, and a second frame member spaced from a second side of the perimeter frame. The first side and the second side of the perimeter frame are parallel with one another. The tooling tray further includes a third frame member extending between and secured to the first frame member and the second frame member. The third frame member is configured to support at least one squeegee blade. The third frame member is configured be to be moved from a first position from the first frame member and the second frame member and installed in a second position on the first frame member and the second frame member, with the second position being spaced from the first position.

An applicator for grain boundary diffusion process that uniformly applies an RH powder without excess or deficiency onto a predetermined surface of a sintered compact with a given thickness and in a given pattern, the applicator being automated and performed on many sintered compacts during the production of a NdFeB system sintered magnet. The applicator includes a work loader and a print head, located above the work loader. The work loader includes: a laterally movable base; a lift being vertically movable with respect to the base; a frame that is attachable to and detachable from the lift; a tray that is attachable to and detachable from the frame; a supporter provided on the upper surface of the tray; and a vertically movable magnetic clamp. The print head includes: a screen having a passage section; and a movable squeegee and a backward scraper that maintains contact with the upper screen surface.

An applicator for grain boundary diffusion process that uniformly applies an RH powder without excess or deficiency onto a predetermined surface of a sintered compact with a given thickness and in a given pattern, the applicator being automated and performed on many sintered compacts during the production of a NdFeB system sintered magnet. The applicator includes a work loader and a print head, located above the work loader. The work loader includes: a laterally movable base; a lift being vertically movable with respect to the base; a frame that is attachable to and detachable from the lift; a tray that is attachable to and detachable from the frame; a supporter provided on the upper surface of the tray; and a vertically movable magnetic clamp. The print head includes: a screen having a passage section; and a movable squeegee and a backward scraper that maintains contact with the upper screen surface.

A screen printing apparatus for screen printing onto a substrate comprises: a printing screen unit, with a printing screen and a frame for holding the printing screen in a substantially planar primary configuration; a support for the substrate; and a moveable print head for contacting and sweeping across a printing region of a first surface of the printing screen; an engagement structure mounted to contact a region of a surface of the printing screen which lies outside any part of the printing region which is drivable to move a portion of the printing screen in a direction orthogonal to the screen. Moving the screen away from the substrate improves separation between the printing screen and substrate. Moving the screen towards the substrate before printing can pre-tension the screen to reduce the tension which the print head has to overcome. Controlled movement of the screen towards and away from the substrate can reduce tension applied to the screen, and thus improve its working life.