Abstract: An improved image reproportioning system is of the type for reproducing an image from an image bearing sheet onto a photosensitive sheet so that the scale of one dimension of the reproduced image can be changed relative to its other dimension. The system comprises a first sheet supporting member for supporting one of the sheets, and a second sheet supporting member for supporting the other of the sheets in substantial juxtaposition with the first sheet. The system also includes means for defining a slit of light, and means for moving the first and second sheet supporting members at a substantially constant speed in a first direction parallel to the direction of the one dimension and transverse to the slit of light so that the sheets pass through and are exposed by the slit of light. Means are also provided for moving the first and second sheet supporting members relative to one another at a substantially constant relative speed as the sheets are exposed to the slit of light.

Abstract: A step-and-repeat registration system is disclosed for making multiple-image plates for use in flexographic printers or the like. The negative which carries the image to be transferred to a light-sensitive film, is referenced with respect to a fixed frame. An incremental step registration system accurately positions the film at a succession of predetermined stations to bring different portions of the film opposite the negative. At each station the film is brought into contact with the negative and an exposure is made on the pertinent film portion, using a light source to project the image onto the film. The registration system provides high accuracy and lends itself to partial or complete automation.