Mitsubishi Rayon Company, Limited

Nissan Motor Company Limited

Mitsubishi Chemical Corporation

Nippon Light Metal Company, Ltd.

Daido Tokushuko Kabushiki Kaisha

Kanagawa Academy of Science and Technology

Mitsubishi Motor Co., Ltd.

Katsuhiro Kojima

Yusuke Nakai

Satoru Ozawa

Hiroshi Onomoto

Kota Shirai

Hiroaki Kita

Tadashi Nakamura

Isao Yamamoto

Satoshi Sakuma

Munekatsu Shimada

Eiko Okamoto

Hideki Masuda

Yoshihiro Uozu

Hiroyuki Aoki

Seiji Tone

Takanobu Saito

Takayuki Fukui

Masashi Mizuno

Masaaki Katsumata

Haruo Unno

Hisakazu Ito

Shinji Makino

Hiroshi Okada

Toshio Endo

Takashi Yanagishita

Kazume Mochizuki

Masayuki Saeki

Yoji Ozawa

Kazuo Watanabe

Masayuki Uchida

A prototype aluminum mold for stampers that is used to manufacture stampers having a fine irregular surface structure on the surface thereof and containing aluminum and magnesium, wherein the content of magnesium is 0.1% by mass to 3% by mass, the content of silicon is 100 ppm by mass or less, the total content of elements other than aluminum and magnesium is 500 ppm by mass or less, and the number of magnesium silicide particles having an equivalent diameter of 10 nm or more on the surface of the prototype aluminum mold for stampers is 10/1000 &#x3bc;mor less.

Prototype aluminum mold for stampers and method for manufacturing same, stamper and method for manufacturing same, method for manufacturing article, and antireflection article

Described are: an active-energy-ray-curable composition () containing a phosphate ester compound of which an aqueous solution prepared by extracting with 50 mL of water per 1 g of the phosphate ester compound has a pH value of 6.5 to 7.5 at 25&#xb0; C., wherein the value of (the concentration of phosphoric acid in the aqueous solution, expressed in mass ppm)&#xd7;(the content of the phosphate ester compound in the active-energy-ray-curable composition, expressed in mass %) is 50 or less; and a process for producing a transparent film () which includes the active-energy-ray-curable composition () and in which a cured resin layer () having a fine uneven structure is formed on the surface of a base film ().

Active-energy-ray-curable composition, and process for producing transparent film having fine uneven structure on surface thereof

The present invention relates to a resin composition for a nano concave-convex structure, including 0.01 to 10 parts by mass of an active energy ray polymerization initiator (D), 0.01 to 3 parts by mass of a release agent (E), and 0.01 to 3 parts by mass of a lubricant (F), relative to 100 parts by mass of a polymerization reactive monomer component containing 50 to 95 parts by mass of a tetrafunctional (meth)acrylate monomer (A), 5 to 35 parts by mass of a difunctional (meth)acrylate monomer (B) in which the total number of repeating units within a polyalkylene glycol structure is from 4 to 25, and not more than 15 parts by mass of a monofunctional (meth)acrylate monomer (C) which is copolymerizable with the monomers (A) and (B), and relates to a transparent member for the monitor of a vehicle navigation device and the cover of a vehicle meter.

Resin composition for nano concave-convex structure, transparent member for monitor of vehicle navigation device and transparent member for cover of vehicle meter using same composition

A method for manufacturing a light transmissive film having a cured resin layer with a fine concavo-convex structure on a surface of a base material film is provided. The method includes sandwiching an active energy ray-curable composition including a mold dissolving component between a mold having an inversion structure of the fine concavo-convex structure and the base material film, obtaining a light transmissive film in which a cured resin layer having the inversion structure of the mold transferred is formed on one surface of the base material film, and separating the obtained light transmissive film and the mold. Thus, it is possible to productively manufacture a light transmissive film, and to prevent the deposition of an attachment on the mold surface and the contamination of the mold surface. Moreover, a light transmissive film can be manufactured having excellent performances, such as antireflection properties.

Method for manufacturing light transmissive film, active energy ray-curable composition, and light transmissive film

The invention relates to a stamper in which an oxide film having a fine concave-convex structure made up of a plurality of fine pores having an aspect ratio represented by [the depth of the fine pores/the average interval between the fine pores] of 1 to 4 is formed on the surface of an aluminum base material which is made of aluminum having a content of Ti of 150 ppm to 500 ppm, a content of B or C of 1 ppm to 50 ppm and a purity of 99.9% or more. According to the invention, it is possible to provide a low-cost stamper in which the emergence of a pattern derived from the traces of crystal grains on the surface of the oxide film is suppressed, an article having a favorable appearance, which is manufactured using the above stamper, and a method for manufacturing the above.

Stamper, article and method for manufacturing the same

A mold comprising alumina having a microscopic pattern, in which distances between adjacent recesses or salients therein are not longer than wavelength of visible light, formed by anodic oxidation on a surface of an aluminum pre-mold without a rolling mark, wherein height or depth difference at a crystal grain boundary is 300 nm or less.

Mold, process for producing mold, and process for producing sheet

A mold in which a fine uneven structure is formed on the surface by anodizing a surface of an aluminum base material having a purity of equal to or more than 99.5% by mass, wherein a 60-degree gloss of the surface on the side where a fine uneven structure is formed is equal to or more than 750%.

Mold, method of manufacturing the same, article having fine uneven structure on surface, and method of manufacturing the same

A magnetostriction type torque sensor employs a plurality of detector coils arranged in axial arrangement along an objective rotary body. The detector coils are so designed and arranged as to compensate influence of temperature, particularly the error caused due to axial temperature gradient caused in the objective rotary body.

Magnetostriction type torque sensor with temperature dependent error

An automatic deseaming apparatus for an elongate block of metallic material comprises a defect marking detector for detecting defect markings which consist of a material containing a fluorescent pigment and have been deposited on defects in the surface of the block, a defect marking position detector for detecting the positions of the defects, a memory for storing the positions of the defect markings which are within the entire area or a predetermined one of segmented areas of the surface of the block, and a grinding controller for controlling reciprocative grinding action in the direction of the longitudinal axis of the block according to the defect marking informations stored in the memory.

Automatic deseaming apparatus for elongate block of metallic material

Growing community of inventors

Hiroshima, Japan

Katsuhiro Kojima