Process for producing screen material

Claim 2

A process for the production of screen material by means of electrodeposition of metal on a smooth surfaced matrix having conductive and non-conductive areas on said surface, said process comprising the steps of: depositing a first partial layer of said metal on said conductive areas of said matrix to a depth substantially less than the desired screen material thickness; then coating the exposed surfaces, including the top and sides, of said first partial layer of said metal with an electrically insulating material; stripping said insulating material from the top surface of said first partial layer; and then depositing a second partial layer of said metal on that portion of said first partial layer exposed by said stripping step.

Claim 3

The process according to claim 1 wherein the sides of said first partial layer of said metal are covered with a thin layer of electrically insulating varnish.

Claim 4

The process according to claim 1 wherein the sides of said first partial layer of said metal are covered by filling the free spaces between said deposited areas with an electrically insulating material.

Claim 5

A process for the production of screen material by means of electrodeposition of metal on a smooth surfaced matrix having conductive and non-conductive areas on said surface, said process comprising the steps of: depositing said metal on said conductive areas of said matrix in at least two deposition operations to produce a terminal layer thickness built up of at least two partial layers of deposited metal; coating the exposed top and side surfaces of each partial layer with an electrically insulating material between each two deposition operations; and stripping said insulating material from the top surface of each partial layer prior to the next succeeding deposition operation.

Claim 6

A process for the production of screen material by means of electrodeposition of metal on a smooth surfaced matrix having conductive and non-conductive areas on said surface, said process comprising the steps of: depositing said metal on said conductive areas of said matrix in at least two deposition operations to produce a terminal layer thickness built up of at least two partial layers of deposited metal; coating the exposed top and side surfaces of each partial layer with an electrically insulating material between each two deposition operations; and stripping said insulating material from the top surface of each partial layer prior to the next succeeding deposition operation.

Claim 7

The process according to claim 4 wherein said coating step is accomplished by filling the free spaces between areas of said deposited metal after each partial layer is deposited with an electrically insulating material.

Claim 8

A process for the production of screen printing blocks by electroplating of metal on a conductive surface wherein selected portions of said surface are coated with a photoresist which is exposed by means of a diapositive having black and transparent areas with a black line screen, and then developing and fixing on the uncovered zones corresponding to the black areas, said process comprising the steps of: depositing a first partial layer of said metal on the areas of said conductive surface remaining uncovered by said photoresist after development and fixing thereof to a depth substantially less than the desired terminal thickness; then coating the exposed surfaces, including the top and sides, of said first partial layer of said metal with an electrically insulating material; stripping said insulating material from the top surface of said first partial layer; and then depositing a second partial layer of said metal on said first partial layer.

Claim 9

A process for the production of screen printing blocks by electroplating of metal on a conductive surface wherein selected portions of said surface are coated with a photoresist which is exposed by means of a diapositive having black and transparent areas with a black line screen, and then developing and fixing on the uncovered zones corresponding to the black areas, said process comprising the steps of: depositing a first partial layer of said metal on the areas of said conductive surface remaining uncovered by said photoresist after development and fixing thereof to a depth substantially less than the desired terminal thickness; then coating the exposed surfaces, including the top and sides, of said first partial layer of said metal with an electrically insulating material; stripping said insulating material from the top surface of said first partial layer; and then depositing a second partial layer of said metal on said first partial layer.

Claim 10

A process for the production of screen printing blocks by electroplating of metal on a conductive surface wherein selected portions of said surface are coated with a photoresist which is exposed by means of a diapositive having black and transparent areas with a black line screen, and then developing and fixing on the uncovered zones corresponding to the black areas, said process comprising the steps of: depositing said metal in at least two deposition operations on the areas of said conductive surface remaining uncovered by said photoresist after development and fixing thereof to thereby produce a terminal layer thickness built up of at least two partial layers of deposited metal; coating the exposed top and side surfaces of each partial layer between each two deposition operations; and stripping said insulating material from the top surface of each partial layer prior to the next succeeding deposition operation.

Claim 11

A process for the production of screen printing blocks by electroplating of metal on a conductive surface wherein selected portions of said surface are coated with a photoresist which is exposed by means of a diapositive having black and transparent areas with a black line screen, and then developing and fixing on the uncovered zones corresponding to the black areas, said process comprising the steps of: depositing said metal in at least two deposition operations on the areas of said conductive surface remaining uncovered by said photoresist after development and fixing thereof to thereby produce a terminal layer thickness built up of at least two partial layers of deposited metal; coating the exposed top and side surfaces of each partial layer between each two deposition operations; and stripping said insulating material from the top surface of each partial layer prior to the next succeeding deposition operation.

Claim 12

A process for the production of screen material by means of electrodeposition of metal on a smooth surfaced matrix having conductive and non-conductive areas on said surface, said process comprising the steps of: depositing a first partial layer of said metal on said conductive areas of said matrix to a depth substantially less than the desired screen material thickness; then coating the exposed side surfaces of said first partial layer of said metal with an electrically insulating material; and then depositing a second partial layer of said metal on said first partial layer.

Claim 13

A process for the production of screen material by means of electrodeposition of metal on a smooth surfaced matrix having conductive and non-conductive areas on said surface, said process comprising the steps of: depositing a first partial layer of said metal on said conductive areas of said matrix to a depth substantially less than the desired screen material thickness; then coating the exposed side surfaces of said first partial layer of said metal with an electrically insulating material; and then depositing a second partial layer of said metal on said first partial layer.