The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Apr. 10, 2007

Filed:

May. 23, 2005
Applicants:

Naoyuki Kawanishi, Minami-Ashigara, JP;

Tadashi Hayashi, Minami-Ashigara, JP;

Hirokazu Sawada, Shizuoka, JP;

Akio Uesugi, Shizuoka, JP;

Inventors:

Naoyuki Kawanishi, Minami-Ashigara, JP;

Tadashi Hayashi, Minami-Ashigara, JP;

Hirokazu Sawada, Shizuoka, JP;

Akio Uesugi, Shizuoka, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B44C 1/22 (2006.01); B23H 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

According to the present invention, since the concavo-convex pattern of the embossing form is formed by electrical discharge machining, the peaks on the surface of the resultant embossing form are all of the same level or height, which enables the enhancement of the service life of the embossing form. Further, since the concavo-convex pattern of the embossing form is formed by electrical discharge machining, even a complicated and minute concavo-convex pattern can be formed. Accordingly, when applying the method of the present invention to, for example, the production of a substrate for a lithographic plate, an aluminum substrate for a lithographic plate which excels in plate wear, sensitivity and resistance to stains can be produced. And when applying the same to the production of an aluminum decorative laminate, an aluminum decorative laminate which excel in glossiness and paint adhesion can be produced.


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