Abstract: A system for prestripping alignment of color separations providing automatic registration of same on stripping, includes provision for using a set of carrier-related holes in a first color separation for establishing position of the first color separation on a hole-transfer table, and then for using fiducial indicia on the first color separation to establish position of a sensor system which in turn is used in conjunction with corresponding fiducial indicia on each of the remaining color separations to establish location for corresponding carrier-related holes which are then punched in each color separation using the hole transfer table.

Abstract: An automatic registration system for four-color image stripping employs in one embodiment a first punching press having a grid pattern die on which a "MYLAR" sheet carrier with desired windows is laid, and, on this, single color images are laid at the respective windows; registration holes are then punched at selectable positions keying the single color images to the carrier by use of a correspondingly-grid-patterned transparent punch holder providing good visual access for selection of positions in the grid pattern at which to mount punches, and a ram which drives the punches against compression-spring bias. Following perforation of the registration holes in the Mylar sheet carrier, each single color image is removed and matched with the remaining single color images of the four-color set to which it belongs, with appropriate locator pins inserted in prepunched holes customarily supplied in each for the color separation stage keying them together.