Abstract: A step and repeat apparatus including an image registration board and a compressible spacer. The image registration board preferably comprises a metal primary base layer such as aluminum, a filler layer such as an amorphous polyester including a Kodar.RTM. PETG copolyester film extrusion, two lower intermediate layers of polyester film such as Mylar.RTM., two upper intermediate layers of a low molecular weight melanin polymer such as Melanex-T.RTM., an intermediate spacing layer of a closed cell polyethylene or polyurethane foam, and a single top bed layer of an acrylic/PVC thermoplastic sheet such as Uniroyal.RTM.DKE400 extrusion grade vinyl, preferably having a top surface defining a level hair-line cell structure. The image registration board preferably defines a plurality of index holes uniformly positioned along and associated with the major divisions of a ruler or scale.

Abstract: An image board comprising a base layer of aluminum, a filler layer of an amorphous polyester film such as Kodar.RTM. PETG copolyester film extrusion, two intermediate layers of polyester film such as Mylar.RTM., two intermediate layers of a low molecular weight polymer such as Melanex-T.RTM., and a bed layer of a rigid acrylic/PVC thermoplastic sheet having a top surface defining a level hair-line cell structure. The thickness of the image board is decreased compared with prior art image boards, to within a range of approximately 0.126"-0.131" at a minimum to approximately 0.171" at a maximum. The image board exhibits enhanced characteristics of stability, flexibility, and resistance to differential thermal expansion. A compressible register pin is selectively mounted on and removed from the reverse side of the image board, being slidably inserted and frictionally engaged in an aperture and contacting the base and intermediate layers.

Abstract: An image board comprising a base layer, two lower and two upper intermediate layers, and a single top bed layer. When used with compressible registration pins or spacers, the image board may optionally include either a filler layer or a spacer layer or both disposed in predetermined positions. The top bed layer of the image board defines an image layout area having at least one border region including a plurality of index holes uniformly positioned in a line equidistantly spaced along and associated with the major divisions of a ruler or scale. The newspaper registration board embodiment has a pair of rulers and lines of indexing holes disposed on opposing parallel peripheral edges of the rectangular image layout area. A predetermined number of circular or elongated registration pins are aligned parallel with and proximate to one of the rulers, and a tail pin is disposed proximate to the opposing ruler.

Abstract: The invention comprises a step and repeat board having an upper surface with oriented peaks and valleys, the valleys intersecting one another to form a texture or finish constituting a level hair-line cell structure wherein the valleys preferably have an average depth on the order of 0.003 to 0.004 inches.

Abstract: The invention comprises a step and repeat board having an upper surface with oriented peaks and valleys.