WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

B41D　APPARATUS FOR THE MECHANICAL REPRODUCTION OF PRINTING SURFACES FOR STEREOTYPE PRINTING; SHAPING ELASTIC OR DEFORMABLE MATERIAL TO FORM PRINTING SURFACES ({engraving by spark erosion B23H;} marking or engraving metal by the action of a high concentration of electric current B23H 9/06; type, machines or accessories for making, setting, or distributing type B41B; processes for the manufacture or reproduction of printing surfaces B41C; machines or apparatus for engraving in general, or for embossing B44B 3/00, B44B 5/00; chemical etching of metal C23F 1/00; electrolytic etching C25F 3/00; photomechanical reprodcution G03F)

B41D 1/00 Preparing or treating sterotype matrices

B41D 1/02 ・using brushes

B41D 1/04 ・using cylinders or rollers

B41D 1/06 ・using presses, e.g. toggle or like lever-and-link type presses

B41D 1/08 ・・using hydraulic presses

B41D 1/10 ・performing secondary operatons on matrices

B41D 1/12 ・・Humidifying or moistening

B41D 1/14 ・・Drying

B41D 3/00 Casting sterotype plates; Machines, moulds, or devices therefor

B41D 3/02 ・Horizontal moulds for casting flat plates

B41D 3/04 ・Moulds, e.g. horizontal, for casting curved, e.g. semi-cylindrical, plates

B41D 3/06 ・・Vertical moulds

B41D 3/08 ・Moulds, e.g. horizontal, for casting tubular, i.e. cylindrical, plates

B41D 3/10 ・・Vertical mouls

B41D 3/12 ・Multiple mould stereotype casting machines

B41D 3/14 ・Details

B41D 3/16 ・・Matrix clamps

B41D 3/18 ・・Devices for closing or opening moulds

B41D 3/20 ・・Melting pots

B41D 3/22 ・・・with pumps for conveying the molten metal into the casting chambers or boxes

B41D 3/24 ・・・with control valves

B41D 3/26 ・・・with devices for stirring the molten metal

B41D 3/28 ・・Devices for cooling the moulds

B41D 5/00 Working, treating, or handling stereotype plates

B41D 5/02 ・by bending

B41D 5/04 ・of flat plates

B41D 5/06 ・of curved plates

B41D 7/00 Shaping elastic or deformable material, e.g. rubber, plastics material, to form printing surfaces (making rubber printing blocks B41C 3/04)

B41D 7/02 ・by impression

B41D 7/04 ・Forming printing surfaces by covering printing forms with a thin elastic skin, e.g. rubber foil, and retaining the latter thereon; Obtaining reduced or enlarged printing surfaces by using thin elastic transfer foils (pantographic instruments for copying, reducing, or enlarging B43L 13/10)

B41D 99/00 Subject matter not provided for in other groups of this subclass