Remote Location Optical Registration System
Original Publication Date: 1988-May-01
Included in the Prior Art Database: 2005-Feb-15
Typical registration techniques for the photolithographic development of a printed circuit board, or the like, employ machine designs using mechanical methods (pins) to align a panel to a phototool. This type of design lends itself to accuracy errors due to accumulation of tolerances and possible tooling hole (panel) damage. An automatic expose machine capable of handling a large panel format (minimum of 19 inches x 24 inches), while also having a precise registration and a fast cycle time, utilizes an optics/video system and a phototool shuttle mechanism to increase image placement accuracy. The machine works in the following manner. The machine is shown in the drawing. A registration alignment is performed on one panel (position #2) while simultaneously exposing another panel (position #1).