Patent Number: 6,309,698

Title: Manufacturing process for a lead-frame forming material

Abstract: A manufacturing process for a lead-frame forming material, comprisescontinuously subjecting a metal web to a degrease treatment and an acidcleaning treatment, coating a light-sensitive material on said metal web,followed by drying to form a light-sensitive layer, and cutting the abovecoated lead-frame forming metal web thus obtained in fixed lengths along alongitudinal direction or winding said coated lead-frame forming metal webinto a roll. The lead-frame having a uniform quality can be produced inlarge volume.

Inventors: Uesugi; Akio (Shizuoka, JP), Kakei; Tsutomu (Shizuoka, JP)


International Classification:

Expiration Date: 10/32013