Loading patent…
AssigneeSharp Kabushiki Kaisha
InventorsMasaki Yamamoto, Go Mori, Hideharu Tajima, Nobuyuki Takamori, Michinobu Mieda
Estimating the term…
By using an existing, relatively inexpensive manufacturing device, micropatterns (e.g. guiding grooves, prepits) having such track pitch and pit pitch that are smaller than the diameter of a light spot are formed more finely. There are provided at least two layers, i.e. (i) a resin substrate and (ii) a depressed part inducing layer made of dielectric material or metal oxide. A light beam is radiated and focused onto the depressed part inducing layer so as to form pit parts and/or guiding grooves on irradiated parts of the resin substrate. The depressed part inducing layer is then removed, so as to expose the pit parts and/or guiding grooves.
A method of forming a micropattern, comprising the steps of:
A method of forming a micropattern, comprising the steps of:
A method of manufacturing an optical recording medium master copy, comprising:
An optical recording medium master copy manufactured by a method comprising:
An optical recording medium stamper manufactured by using an optical recording medium master copy manufactured by a method comprising:
An optical recording medium manufactured by using an optical recording medium stamper manufactured by using an optical recording medium master copy manufactured by a method comprising:
An optical recording medium manufactured by using an optical recording medium master copy manufactured by a method comprising:
A method of manufacturing an optical recording medium master copy, comprising:
An optical recording medium master copy manufactured by a method comprising:
An optical recording medium stamper manufactured by using an optical recording medium master copy manufactured by a method comprising:
An optical recording medium manufactured by using an optical recording medium stamper manufactured by using an optical recording medium master copy manufactured by a method comprising:
An optical recording medium manufactured by using an optical recording medium master copy manufactured by a method comprising:
A method of manufacturing an optical recording medium master copy, comprising:
An optical recording medium master copy manufactured by a method comprising:
An optical recording medium stamper manufactured by using an optical recording medium master copy manufactured by a method comprising:
An optical recording medium manufactured by using an optical recording medium stamper manufactured by using an optical recording medium master copy manufactured by a method comprising:
An optical recording medium manufactured by using an optical recording medium master copy manufactured by a method comprising:
Dependencies are inferred from the claim text.