United States Patent and Trademark Office

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	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

Guide Heading:

Producing printing surfaces

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