Toray Industries, Inc.

Futoshi Okuyama

Takayoshi Akamatsu

Yoichi Shinba

Tetsuya Hayashi

Hiroshi Enomoto

Masahiro Oguni

Nobuyuki Kuroki

Yoshio Matsuda

Hitoshi Nobumasa

Gentaro Ohbayashi

Kusato Hirota

Kunihisa Nagino

A circuit board-use member has a reinforcing plate, a removable organic layer, a flexible film having a circuit pattern, and a peeling-assist layer laminated in that order;

Laminated member for circuit board, method and apparatus for manufacturing of circuit board

The present invention relates to a circuit board including a flexible film provided with an extremely fine circuit pattern, a laminated member for a circuit board, and a method for making a laminated member for a circuit board with excellent productivity. A circuit board of the present invention includes a flexible film and a circuit pattern composed of a metal provided on the flexible film, and dimensional change rate of the circuit pattern is within &#xb1;0.01%. A laminated member for a circuit board of the present invention includes a reinforcing plate, a self-stick, removable organic layer, a flexible film, and a circuit pattern composed of a metal laminated in that order.

Methods for making laminated member for circuit board, making circuit board and laminating flexible film

Circuit board, laminated member for circuit board, and method for making laminated member for circuit board

Phase-change type rewritable optical recording media, such as optical discs, optical cards, and optical tapes, where recorded data can be erased or overwritten and where data can be recorded with high speed and high density by applying a light beam can include an optical recording medium is one that includes a laminate member, which in various embodiments contains a transparent substrate, a first dielectric layer, a recording layer, a second dielectric layer, a light absorbing layer, and/or a reflecting layer. In various embodiments of the invention, the shortest distance between recorded marks in the recording direction along the track is less than &lgr;/NA, with &lgr; and NA denoting the wavelength of the light used and the numerical aperture of the objective lens of the optical head, respectively.

Optical recording medium

Growing community of inventors

Otsu, Japan

Futoshi Okuyama