Shear foil having protrusions on its skin-contacting surface the

Details Shear foil having protrusions on its skin-contacting surface the Shear foil having protrusions on its skin-contacting surface the

1983-03-01

1985-11-12

Kittle, John E.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Making named article

430323, 430324, 3034651, 3034652, 3034661, 204 11, 204 141, 204 181, 204 24, 204 321, G03C 500, B26B 1904

Patent

active

045528322

ABSTRACT:
A method for producing a shear element having protrusions on the skin contacting surface thereof, including the steps of coating an electrically conductive surface with a photoresist, exposing the photoresist to a hold pattern and developing the photoresist to produce a grid pattern wherein the electrically conducting surface is exposed, the grid pattern defining hole areas wherein the electrically conductive surface is covered by islands of photoresist of a predetermined thickness, introducing irregularities into the surface elevation of the exposed grid, the surface irregularities being of lesser dimension of the thickness of the photoresist islands, depositing an intermediate foil onto the exposed grid overlying the introduced surface irregularities, the intermediate foil being of sufficient thickness to extend above the photoresist islands when deposited, depositing a shear foil overlying the intermediate foil, and removing the shear foil from the intermediate foil, thus producing a shear foil having protrusions on the skin contacting surface thereof but having relatively smooth surface in the regions surrounding shear openings corresponding to the locations of the photoresist islands.

REFERENCES:
patent: 1862231 (1932-06-01), McFarland
patent: 2166366 (1939-07-01), Norris
patent: 3382159 (1968-05-01), Reed
patent: 3643331 (1972-02-01), Futterer et al.
patent: 3655528 (1972-04-01), Futterer
patent: 3695927 (1972-10-01), Futterer
patent: 3726770 (1973-04-01), Futterer
patent: 4139940 (1979-02-01), Buras, Jr. et al.
patent: 4192719 (1980-03-01), Wich

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