Abstract: A paste coating system comprises a dispensing head assembly operatively connected to a coating frame, the dispensing head assembly including one or more dispensing heads configured to dispense paste (thixotropic and/or non-Newtonian) onto a grid with respect to the coating frame, and a ultrasonic transducer adjacent to the one or more dispensing heads configured to regulate viscosity of the paste such that the paste is coated onto the grid uniformly without risking material properties. The paste coating system also comprises a controller configured to automatically control operation of the dispensing head assembly and ultrasonic transducer during coating according to one or more coating profile.

Abstract: An apparatus includes a conical body defining a chamber configured to contain a liquid and having a nozzle located a front end of the conical body and configured to discharge a stream of the liquid, a rear wall positioned at a rear of the conical body and at least partially defining the chamber, an inlet in communication with the chamber for introducing the liquid into the chamber, an acoustic transducer positioned at the rear wall, the acoustic transducer configured to generate acoustic energy and to introduce the acoustic energy into the liquid contained in the chamber, and an exhaust system including a vent in communication with the chamber to remove a mixture of liquid and gas bubbles from the chamber, an exhaust leading away from the vent, and an outlet in communication with the exhaust and configured to discharge the liquid and gas bubbles into or adjacent to the stream.

Abstract: An alignment system for a workpiece printing machine comprises a stencil support and a workpiece support, and a planarity control mechanism having at least two actuators arranged to effect relative rotation of the stencil support and workpiece support about both the horizontal axes.

Abstract: A printing machine includes an isolated chamber for the print medium cartridge, which chamber can be opened and accessed without interrupting the print process. In order to enable such a configuration, the cartridge and its cradle are also separated from the print carriage and carried on a shuttle movably mounted on a static rail. The shuttle includes a wall section which acts to isolate the chamber when the shuttle is located in a home position within the chamber.

Abstract: A printing machine includes an isolated chamber for the print medium cartridge, which chamber can be opened and accessed without interrupting the print process. In order to enable such a configuration, the cartridge and its cradle are also separated from the print carriage and carried on a shuttle movably mounted on a static rail. The shuttle includes a wall section which acts to isolate the chamber when the shuttle is located in a home position within the chamber.

Abstract: An alignment system for a workpiece printing machine comprises a stencil support and a workpiece support, and a planarity control mechanism having at least two actuators arranged to effect relative rotation of the stencil support and workpiece support about both the horizontal axes.