Mitsubishi Rayon Company, Limited

Mitsubishi Chemical Corporation

Kanagawa Academy of Science and Technology

Kanagawa Institute of Industrial Science and Technology

Yuji Matsubara

Hideki Masuda

Eiko Okamoto

Hiroshi Onomoto

Masashi Ikawa

Jitsuo Hirohata

Takashi Yanagishita

Mitsufumi Fukuyama

The present invention relates to a method of manufacturing a mold having an oxide film with a plurality of pores formed on a surface of an aluminum substrate, the method including (a) a process of applying a voltage to a machined aluminum substrate and anodizing a surface of the aluminum substrate to form an oxide film; and (b) a process of removing at least a part of the oxide film formed in the process (a), wherein a voltage (V[V]) immediately before the process (a) is terminated and a time (t[sec]) required to reach the voltage (V[V]) after starting the application of voltage satisfy the following Equation (i) in the process (a).0.010&#x3c;&#x2003;&#x2003;(i)

Method of manufacturing mold, and molded article having fine relief structure on surface and method of manufacturing the same

This method for producing anodic porous alumina such that an oxide coating film having a plurality of minute pores is formed at the surface of an aluminum substrate is characterized by containing: a step (a) for immersing the aluminum substrate in an electrolytic liquid resulting from mixing a plurality of acids; a step (b) for imposing a voltage on the aluminum substrate immersed in the electrolytic liquid; a step (c) for holding the aluminum substrate in the state of being immersed in the electrolytic liquid essentially without imposing a voltage on the aluminum substrate; and a step (d) for alternately repeating step (b) and step (c). By means of the present invention, it is possible using a simple device and with few steps to provide a method that easily produces anodic porous alumina such that an oxide coating film having a plurality of minute pores is formed at the surface of an aluminum substrate.

Method for producing anodic porous alumina, method for producing molded article having microscopic pattern on surface, and molded article having microscopic pattern on surface

The present invention relates to a method of manufacturing an article having a fine concave-convex structure on a surface thereof, the structure having pores in which a pore interval is less than or equal to a wavelength of visible light, including: irradiating a surface of the article having the fine concave-convex structure on the surface, with light from an illumination device; capturing an image of reflected light from the surface of the article having the fine concave-convex structure on the surface using imaging device; acquiring color information from an image captured by the imaging device; and inspecting the article having the fine concave-convex structure based on the color information. According to the present invention, it is possible to easily inspect the depth of the pores of anodized alumina and the pitch between the pores, and to provide a method of manufacturing anodized alumina having a stable pore shape.

Method for manufacturing anodized alumina, and device and method for inspecting the same

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Otake, Japan

Yuji Matsubara