Method for making a printing screen and printing a variable thic

Details Method for making a printing screen and printing a variable thic Method for making a printing screen and printing a variable thic

1993-05-05

1995-02-14

Burr, Edgar S.

Printing

Stenciling

Stencils

101129, 427282, 427287, B41F 1536

Patent

active

053885090

ABSTRACT:
A printing screen, a process of making such a printing screen, and a method of screen printing on hard non-absorbent materials, such as glass, are provided to form a pattern with selected areas of variable thickness. A pattern is formed in the screen utilizing an emulsion coating which has been hardened in the usual manner. A second pattern is formed in a second emulsion coating on a surface of the screen in at least one area of the first pattern. The second emulsion coating is substantially thicker than the first coat and includes a specific dot size and arrangement to achieve additional support, which results in a greater thickness of ceramic ink being deposited when the screen is in use. The dots are arranged in a spaced-apart relationship to provide a durable and high quality screen. The dots are sized based on the mesh opening size of the fabric used in the screen. By sizing the dots to match the mesh size, the life of the screen may be increased because the dots are stronger and will effectively reduce the crumbling and cracking of emulsion dots during regular production use.

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patent: 5240816 (1993-08-01), Noguchi et al.

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