Abstract: A stencil exposure apparatus that includes a frame with central translucent stencil mounting surface. A plurality of generally flat, resilient, compressible seal elements extend between opposite sides of the translucent surface and are movably mounted on the frame to accommodate the stencil exposure apparatus to a variety of stencil dimensions. A stencil chase mounting bar is movably mounted on the forward face of the frame, is connected to a support bar on the rear face of the frame, and which includes a mechanism for maintaining the orientation of the bar relative to the frame while the mounting bar is being moved. Mounting blocks are slidably mounted on the mounting bar and include a clamping mechanism for rapid lateral adjustment of the blocks.

Abstract: A stencil exposure apparatus that includes a frame with central translucent stencil mounting surface. A plurality of generally flat, resilient, compressible seal elements extend between opposite sides of the translucent surface and are movably mounted on the frame in order to accommodate the stencil exposure apparatus to a variety of stencil dimensions. A stencil mounting bar is movably mounted on the frame and includes means for maintaining the orientation of the bar relative to the frame while the mounting bar is being moved.