Flat costume jewelry and method for the surface treatment thereo

Details Flat costume jewelry and method for the surface treatment thereo Flat costume jewelry and method for the surface treatment thereo

1974-04-08

1976-05-25

Powell, William A.

Coating processes

Nonuniform coating

Applying superposed diverse coatings or coating a coated base

63 32, 96 36, 96 381, 148 624, 148 315, 156 8, 427264, 427265, 428 28, 428457, B44D 152

Patent

active

039595277

ABSTRACT:
Costume jewelry is manufactured through photofabrication processes from flat metal sheets to form items such as earrings and small pendants. A standard photo-fabrication operation includes covering a metal sheet with a layer of photosensitive, chemically resistive material commonly referred to as a photoresist. Portions of the covered sheet are exposed to light to outline the earrings and pendants on the sheet. The sheet is then developed and the exosed metal surface portions are chemically etched to remove excess metal and form the earrings and pendants. Thereafter, surface treatments involve supplementary photofabrication operations to provide different colors and finishes on the earrings and pendants by etching, plating and staining the exposed metal surfaces, all of which are supplemented by the retention of portons of photoresist layers of selected colors.

REFERENCES:
patent: 282485 (1883-08-01), Baynes
patent: 1937146 (1933-11-01), Gries
patent: 1942686 (1934-01-01), Colbert et al.
patent: 2102162 (1937-12-01), Nierenberg
patent: 2521648 (1950-09-01), Ott
patent: 3469982 (1969-09-01), Celeste
patent: 3813310 (1974-05-01), Droege et al.

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