A screen assembly is provided for screen printing and includes a screen with a perimeter frame and a tray covering the frame. The tray includes a central opening with an inner peripheral lip or edge which press fits against the screen to keep ink from contacting the frame during the screen printing process. After printing, the tray is removed from the frame so that the assembly can be cleaned and reused. The assembly and its method of use eliminates the need for conventional taping of the screen and frame.