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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)
Definition statement
This subclass covers:

Making of stereotype printing surfaces, means for casting stereotype plates including machines, moulds and accessories, processes for handling and treating stereotype plates, and processes for preparing stereotype matrices.

Means and processes for shaping into relief form elastic or deformable material like rubber or plastics. The raised parts having an almost flat top surface define the image to be printed, e.g. alphanumerical or decorative symbols, in relief or letterpress type printing apparatus.

Informative references
Attention is drawn to the following places, which may be of interest for search:

Flat type-bed letterpress or relief printing presses in general

Rotary letterpress machines in general

Flexographic rotary letter press machines in general

Letterpress printing apparatus specifically adapted for office or other commercial purposes

Stereotype printing plates per se in general

Printing plates having elastic or deformable material in general

Stereotype mats

Foundry moulding in general

Casting of metals in general

Shaping or joining of plastics in general

Producing particular articles from plastics including rubber

Glossary of terms
In this subclass, the following terms (or expressions) are used with the meaning indicated:

Stereotype plates

stiff metallic plates cast from a multilayer tissue paper and/or plaster containing matrix. This latter matrix is produced by applying fluid plaster or said multilayer tissue paper by using contact pressure onto the surface of a type bed being filled with a prearranged set of printing types carrying alphanumerical or decorative symbols representing e.g. a full page to be printed, fixed together in an open frame.

Stereotype printing surfaces

letterpress or relief type printing devices used in flat type bed printing presses and in rotary letterpress machines.

Synonyms and Keywords

In patent documents the following expressions "stereotype printing surfaces", "stereoplate" and "cliché" are often used as synonyms.

Preparing or treating sterotype matrices
Definition statement
This group covers:

Shaping the matrices by exerting pressure and further secondary treating steps like cleaning, moistening or drying the matrices, specific technology mostly used until year 2000.

Casting sterotype plates; Machines, moulds, or devices therefor
Definition statement
This group covers:

Machines, casting and moulding devices specifically adapted for manufacturing stereotype printing plates, specific technology mostly used until the year 2000.

Working, treating, or handling stereotype plates
Definition statement
This group covers:

Deforming, e.g. bending, and transporting flat or curved stereotype plates, specific technology mostly used until the year 2000.

Shaping elastic or deformable material, e.g. rubber, plastics material, to form printing surfaces (making rubber printing blocks B41C 3/04)
Definition statement
This group covers:

Shaping of rubber or plastics exclusively for manufacturing of relief type or of letterpress type printing surfaces, e.g. flexographic printing plates, mechanical apparatus for said shaping of rubber or plastics.

Informative references
Attention is drawn to the following places, which may be of interest for search:

Shaping or joining of plastics in general

Producing particular articles from plastics including rubber

Chemical treatment of plastics or rubber for manufacturing printing surfaces in general

Processes for reproduction or duplicating to produce printing blocks from plastics

Glossary of terms
In this group, the following terms (or expressions) are used with the meaning indicated:

Relief type printing surfaces

printing surfaces that are defined by raised parts having an almost flat top surface defining an alphanumerical letter or defining any other design or symbol.

Subject matter not provided for in other groups of this subclass
References relevant to classification in this group
This group does not cover:

Preparing or treating sterotype matrices

Casting sterotype plates; machines, moulds, or devices therefore

Working, treating, or handling strereotype plates

Shaping elastic or deformable material, e.g. rubber, plastic material, to form printing surfaces

This page is owned by Office of Patent Classification.
Last Modified: 10/11/2013