Abstract: An apparatus for securing a printing screen frame is configured so that, when a piston rod moves backward due to the supply of air pressure, tensile force applied to a support frame of a printing screen unit by a coupling protrusion of a tension member is released and the printing screen unit can be replaced, and, when the piston rod moves forward as an elastic spring extends due to the stop of the supply of the air pressure, the coupling protrusion of the tension member is caught on the support frame of the printing screen unit and applies pressure thereto due to elastic force so as to tension the printing screen, and then reverse pressure can be applied thereto by using air pressure, as needed.

Abstract: Disclosed herein is a print screen unit. The print screen unit has a structure in which the connection member is positioned to be slanted at a predetermined angle when the print screen is fitted to an interface unit, such that, as tensile force is applied to the print screen, the engagement state of engaging apertures of the print screen and engaging protrusions of the connection member moves toward the coupling direction thereof so as to further increase coupling force therebetween. And the print screen unit has a structure in which, when each of corner pieces is fitted into and connected to each of end portions of the interface unit, a connection surface area increases so as to bring three surfaces of the inside of the interface unit into close contact with a first and a second piece member.

Abstract: A printing screen frame holding device is provided. The printing screen frame holding device has a tensioning operation portion and an elevating operation portion, which are operated successively at an interval of few seconds by means of control of a rate of supply of air pressure by an orifice, are mounted on a quadrangular frame-shaped frame holding means that includes a combination of multiple mounting frames and multiple corner pieces, without provision of any separate mechanism or an additional component.

Abstract: A printing screen frame holding device is provided. The printing screen frame holding device has a tensioning operation portion and an elevating operation portion, which are operated successively at an interval of few seconds by means of control of a rate of supply of air pressure by an orifice, are mounted on a quadrangular frame-shaped frame holding means that includes a combination of multiple mounting frames and multiple corner pieces, without provision of any separate mechanism or an additional component.