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US 6,309,698 B1Granted
Manufacturing process for a lead-frame forming material
AssigneeFuji Photo Film Co., Ltd.
InventorsAkio Uesugi, Tsutomu Kakei
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Abstract
A manufacturing process for a lead-frame forming material, comprises continuously subjecting a metal web to a degrease treatment and an acid cleaning treatment, coating a light-sensitive material on said metal web, followed by drying to form a light-sensitive layer, and cutting the above coated lead-frame forming metal web thus obtained in fixed lengths along a longitudinal direction or winding said coated lead-frame forming metal web into a roll. The lead-frame having a uniform quality can be produced in large volume.
Claims2
A manufacturing process for producing a lead-frame forming material comprising:
- continuously subjecting a metal web consisting essentially of copper or a copper-nickel alloy to a degrease treatment and an acid cleaning treatment,
- coating a light-sensitive material on said metal web, followed by drying to form a light-sensitive layer,
- cutting the resulting coated metal web into fixed lengths along a longitudinal direction or winding the resulting coated metal web into a roll, and forming a matting layer on the light-sensitive material.
Dependencies are inferred from the claim text.