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.

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, 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 screen printing machine for appropriately contact between a mask and a board, comprising: a mask-holding device configured to hold a mask; a board-positioning device configured to hold a board and to position the held board with respect to a mask held by the mask-holding device from below; a squeegee device configured to spread a cream solder with respect to the mask; a height-measuring device configured to measure the height of the mask and the board; a control device configured to control each device, and to calculate the thickness of a mask lower layer, integrally formed with the mask, based on the measurement values obtained from the height-measuring device; and an operation display device configured to input operation and to display calculation values from the control device, and the like.

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 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 printed circuit board inspection apparatus obtains measurement shape information about each of a plurality of solder pastes printed on a first printed circuit board through a plurality of apertures and aperture shape information about each of the plurality of apertures, obtains probability values that a first solder paste printed through a first aperture of the plurality of apertures and each of a plurality of second solder pastes printed through second apertures other than the first aperture of the plurality of apertures have the measurement shape information when the first solder paste and the plurality of second solder pastes are printed on the first printed circuit board, by applying the measurement shape information and the aperture shape information to a machine-learning based model, and detects whether an anomaly in the first solder paste occurred based on the probability values.

A printed circuit board inspection apparatus obtains measurement shape information about each of a plurality of solder pastes printed on a first printed circuit board through a plurality of apertures and aperture shape information about each of the plurality of apertures, obtains probability values that a first solder paste printed through a first aperture of the plurality of apertures and each of a plurality of second solder pastes printed through second apertures other than the first aperture of the plurality of apertures have the measurement shape information when the first solder paste and the plurality of second solder pastes are printed on the first printed circuit board, by applying the measurement shape information and the aperture shape information to a machine-learning based model, and detects whether an anomaly in the first solder paste occurred based on the probability values.

A printed circuit board inspection apparatus generates at least one image indicating whether an anomaly associated with a plurality of solder pastes printed on a first printed circuit board is detected, if an anomaly in at least one solder paste of the plurality of solder pastes is detected by using an image of the first printed circuit board, obtains at least one value indicating relevance between at least one fault type and the generated at least one image, using the machine-learning based model, and determines a fault type associated with the at least one solder paste in which the anomaly is detected from at least one fault type, based on the obtained at least one value.

A printed circuit board inspection apparatus generates at least one image indicating whether an anomaly associated with a plurality of solder pastes printed on a first printed circuit board is detected, if an anomaly in at least one solder paste of the plurality of solder pastes is detected by using an image of the first printed circuit board, obtains at least one value indicating relevance between at least one fault type and the generated at least one image, using the machine-learning based model, and determines a fault type associated with the at least one solder paste in which the anomaly is detected from at least one fault type, based on the obtained at least one value.