Printing plate
AssigneeHoechst Aktiengesellschaft
InventorJoachim Stroszynski
Life of this patent
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Abstract
This invention relates to a printing plate comprising a support bearing either (A) a layer comprising particles each containing a hydrophilic metal core and an oleophilic metal casing or (B) a layer comprising particles each containing an oleophilic metal core and a hydrophilic metal casing.
Claims18
A printing plate comprising a support bearing a layer comprising particles each containing a hydrophilic metal core selected from the group consisting of aluminum, zinc, steel, chromium, and nickel,
- and an oleophilic metal casing selected from the group consisting of copper, brass, and lead.
A printing plate comprising a support bearing a layer comprising particles each containing an oleophilic metal core selected from the group consisting of copper, brass, and lead,
- and a hydrophilic metal casing selected from the group consisting of aluminum, zinc, steel, chromium, and nickel.
A process for the production of a bimetallic printing plate which comprises coating a support with a layer comprising particles each containing a hydrophilic metal core selected from the group consisting of aluminum, zinc, steel, chromium, and nickel,
- an oleophilic metal casing selected from the group consisting of copper, brass and lead,
- and etching the casings in a manner such that said cores are bared in selected areas of the plate surface.
A process for the production of a bimetallic printing plate which comprises coating a support with a layer comprising particles each containing an oleophilic metal core selected from the group consisting of copper, brass, and lead,
- a hydrophilic metal casing selected from the group consisting of aluminum, zinc, steel, chromium, and nickel.
- and etching the casings in a manner such that said cores are bared in selected areas of the plate surface.
Dependencies are inferred from the claim text.