Abstract: An exposure unit and a work piece support table are interchangeably mounted on an elongated, horizontal support arm. The support arm is a part of a screen-printing machine that includes a post to which one end of the support arm is connected. The post includes a rotor to which a plurality of printing screens are attached. The rotor is rotated to successively place the printing screens above the exposure unit. After the printing screens are exposed, they are removed from the rotor and washed to remove from them an unexposed portion of a coating that was applied to the printing screen. This unexposed portion of the coating is washed away, leaving a positive image on the screen where the washed away material was once located. This positive image reason will pass ink. After the printing screens have been prepared, the exposure unit is removed from the support arm and is replaced on the support arm by a work piece supporting table. A work piece is positioned on the table.

Abstract: An improved silk screen frame for tensioning a panel of screen material via the rotation of a pair of screen-tensioning members adapted to grip a flexible strip secured to the edge of the screen material in an off-center position with respect to the axis of rotation of the tensioning member. Rotation of the screen-tensioning members imparts a force which thereby stretches the screen panel material to a taut condition, and places each tensioning member in position to be engaged by a pair of adjacent rotatable finger locks which maintain the screen-tensioning members in their rotated state.

Abstract: A screen printing machine is provided having a cabinet, a print screen, a platen assembly, and a curing assembly. The cabinet includes an upper opening and a shelf extending inwardly along at least two opposed cabinet sidewalls. The print screen is adapted to be held on the cabinet shelf in a lateral position. The platen assembly is provided for supporting a substrate suitable for receiving a screen print. The curing assembly is movably connected to the cabinet and located generally above the cabinet upper opening. The curing assembly includes a housing having an open bottom and at least one ultraviolet bulb attached within the housing and oriented to direct ultraviolet light downward. During use, the curing assembly moves laterally between a first position in which the ultraviolet light bulb is not directly above the substrate and a second position in which the ultraviolet light bulb is located directly above the substrate.

Abstract: A screen printing machine for: (i) creating an image bearing screen; (ii) using the image-bearing screen to create designs on a suitable substrate; and (iii) heating the print to cure the print ink. The bottom of a cabinet forms the base of a cavity that houses a series of ultraviolet (UV) lamps used to create an image-bearing screen. The top of the cavity is enclosed by a protective panel when the lamps are not being used. Narrow shelves that extend inwardly from the side walls support a pop-up screen holder that includes a U-shaped frame sized to receive a screen frame. A downwardly extending tube is slidably mounted in a vertical tubular hole. A coil spring creates an upward pressure on the U-shaped frame. The U-shaped frame is held down by a latch mechanism. A screen registration mechanism moves the U-shaped frame into a fixed position. A beveled block forces a print screen into a predetermined position.