Abstract: To provide a sleeve for a press roll and a sleeve mounted press roll, wherein a cylindrical sleeve (1) to be used by externally mounting on a press roll (2) comprises a cylindrical main layer (11) composed with a composite material, where a fiber reinforcing material is bound with a matrix resin, the first cover layer (12) is formed on an outer peripheral surface of the main layer (11), and the second cover layer (13) is formed on an inner circumference surface of said main layer (11).

Abstract: The invention relates to borderline formation on a multi-color ink ribbon for use on a typewriter or impact type printer.The ink-impervious borderline is formed by melting the fiber in the corresponding linear zone of the substrate fabric by irradiation with thermal radiation, specifically, an oblong laser beam, without physical contact.

Abstract: A liquid photosensitive composition is introduced into a hollow cylindrical element and the latter is spun at a high speed to centrifugally deposit the liquid photosensitive composition uniformly on the inner surface of the hollow cylindrical element and cause the resin composition to cure in situ. The above process provides a seamless cylindrical photosensitive resin structure. After the centrifugal formation of a photosensitive resin layer on the inner surface of the hollow cylindrical element, the photosensitive resin may be back-exposed from within the hollow cylindrical element and relief-exposed from outside of the hollow cylindrical element though an image carrier.By the above method, resin plates and particularly those suited for flexographic printing can be manufactured, and using these resin plates, seamless image printing can be performed.