Abstract: A device for fastening a machine plate in an offset press is disclosed. The machine plate fastening device may be gripped by a plate lock-up device on the offset press. The device has a plate and a leaf spring, the plate having fastening pins and the leaf spring holding the machine plate on the pins. The leaf spring has holes corresponding to the fastening pins. Also disclosed is a joint plate which can be attached to fix the fastening device at an appropriate angle on the offset press.

Abstract: There are provided a machine plate fastening means for an offset printing machine, which is placed on the upper clamp plate of a PS plate lock-up device fitted in the cut-off part of a plate cylinder used for an offset printing machine so that it is attachable to or detachable from the clamp plate by the use of at least two bolts; with the fastening means comprising (i) a lower plate having the back part which is attached to the PS plate lock-up device with the bolts, the middle part over which a machine plate is fastened by putting fastening pins in the fastening holes punched therein and the front part for introducing the insertion of the machine plate, (ii) one or more of a leaf spring for pressing the machine plate, which is inserted and fastened by the fastening pins at the fastening holes, so as to prevent the machine plate from slipping off the fastening pins and (iii) an upper plate laid on the lower plate directly or via a spacer so that it is united to the back part of the lower plate; wherein the f

Abstract: Provided is a photographic processing device comprising at least one pair of a tray section and an upper section, which are each made by integral molding, arranged so as to form a space. A photosensitive material is passed through the space with its emulsion side turned to the upper plane of the tray section. The upper plane of the tray section and the lower plane of the upper section are equipped with free-rotation rollers for supporting the conveyance of a photographic material. For the adaptation to the width of a photosensitive material to be passed therethrough, two or more of the pairs of the sections are joined together in the width direction with packing.

Abstract: Disclosed are a photographic method which including optically dividing the picture plane of a great-size original into two areas and photographing said areas with a specified combination of a lens having a narrow angle of view with two or three pairs of mirrors to form the images of the original on the same plane, and a photosensitive material printing apparatus utilizing the above photographing method.