Patent ID: 6453810
Filing Date: 2002-09-24
Classification: B23K,H05K

Abstract:
A printer for printing a viscous material at predetermined positions forming a pattern on a substrate, the printer comprising:a frame; a device, mounted to the frame, having a number of perforations arranged to form the pattern; a support apparatus, coupled to the frame, that supports the substrate in printing position beneath the device; a material dispenser having a chamber to contain the viscous material to be printed on the substrate, the chamber having an opening through which the viscous material is dispensed, the material dispenser being coupled to the frame, positioned over the device, and constructed and arranged to dispense the viscous material through the perforations in the device and onto the substrate, the material dispenser having a retraction device that prevents leakage of the viscous material from the opening after dispensing is complete, the material dispenser further having at least one port and a removable cartridge coupled to the port, the removable cartridge containing material to be dispensed and having an inlet to receive pressurized air to force material from the cartridge through the port and out of the opening of the chamber; and a temperature control system to control the temperature of the viscous material contained in the chamber.