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:
Nov. 01, 2005

Filed:

Feb. 08, 2002
Applicants:

Yutaka Matsumoto, Saitama, JP;

Hironobu Nishimura, Saitama, JP;

Masahiko Kotoyori, Tokyo, JP;

Koji Yamaguchi, Yokohama, JP;

Yoshihiko Naito, Tokyo, JP;

Inventors:

Yutaka Matsumoto, Saitama, JP;

Hironobu Nishimura, Saitama, JP;

Masahiko Kotoyori, Tokyo, JP;

Koji Yamaguchi, Yokohama, JP;

Yoshihiko Naito, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B007/26 ;
U.S. Cl.
CPC ...
Abstract

A molding machinewhich molds two sheets of disc substrates on which the information is recorded simultaneously, a cooling mechanismfor cooling each of the disc substrates, first movably mounting meansfor movably mounting the disc substrate from the molding machine onto the cooling mechanism, and a second movably mounting meansfor mounting each of the disc substrates onto a receiving portion of the turn tableare provided. In addition, a film forming devicefor receiving sequentially each of the disc substrates from this movably mounting meansand forming a reflective film on one of the surfaces of each of the received disc substrates on which the information is recorded; a turn tablehaving a plurality of receiving portions on which the disc substrates are mounted and which rotates intermittently through each constant angle; a reversing mechanismwhich reverses 180 degrees each of the disc substrates; and an overlapping mechanism for overlapping the reversed disc substrates over the other disc substrates are provided. Furthermore, spinnersfor rotating the overlapped two sheets of disc substrates and a curing devicewhich radiates ultra-violet rays onto the disc substrates which are rotated by the spinners to cure the liquid adhesive. According to the above-described structure, an optical disc which is compact, is fast in a production speed, and has a high quality can be achieved.


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