Abstract: A grease composition for heat fixing devices contains a base oil and polytetrafluoroethylene. The base oil contains a perfluoropolyether having at least one of the structures represented by formulas (I) and (II) in the molecule and has a kinematic viscosity v40 of 800 mm2/s to 2500 mm2/s at 40° C., and whose kinematic viscosity v200 at 200° C. is 1/50 or less of the kinematic viscosity v40.

Abstract: A fastening tool for fastening a nut to a bolt includes a pipe and a coupling member. The nut breaks at specified torque. The pipe has a socket wrench, a detachable structure and a suction port. The detachable structure is for attaching to and detaching from a rotor of a rotational drive device. The suction port is for suctioning a piece of the nut broken by the specified torque. The coupling member has a flow path, a first coupling portion and a second coupling portion. The flow path is for suctioning the piece of the nut from the suction port. The piece of the nut is suctioned from the suction port with an ejector. The first coupling portion couples the coupling member to a casing of the rotational drive device. The second coupling portion couples the coupling member to a duct of the ejector.

Abstract: A holder has a holder engagement portion in at least a position sandwiching a pad from both sides in a third direction orthogonal to both a first direction that is an urging direction of an elastic member and a second direction that is an axial direction of a worm accommodation portion. The pad has a pad engagement portion that comes into contact with the holder engagement portion on at least one of both side portions in the third direction. Based on contact between the holder engagement portion and the pad engagement portion, displacement of the pad in the third direction with respect to the holder is regulated.

Abstract: According to one implementation, a drill includes the first cutting edges, the second cutting edges and a deflection reducer. The first cutting edges drill a prepared hole to a workpiece. The first cutting edges are formed in a tip side of the drill. The first point angle and each first relief angle of the first cutting edges continuously or intermittently decrease from the tip side toward a rear end side of the drill. The second cutting edges finish the prepared hole. The second cutting edges are formed at positions away in the rear end side from the first cutting edges. The second cutting edges have the second relief angles at a maximum diameter position. The deflection reducer reduces deflection of the second cutting edges by being inserted into the prepared hole. The deflection reducer is formed between the first cutting edges and the second cutting edges.

Abstract: A worm reducer has: a housing having a wheel housing portion and a worm housing portion; a worm wheel; a worm, a support bearing having an inner ring externally fitted to the tip end portion of the worm and an outer ring; an elastic biasing means elastically biasing the outer ring toward the worm wheel side; and an elastic holding means elastically holding the outer ring from both sides in a direction orthogonal to a biasing direction by the elastic biasing means and to a center axis of the worm housing portion.

Abstract: A collet bush includes a tapered cylindrical outer surface, a cylindrical inner surface and a flow path. The collet bush is to be inserted into a concentric collet that is attached to a handheld tool driving device in order to position the tool driving device to a workpiece. The tool driving device holds, rotates and feeds a tool. The tool driving device has a function to suck chips. The outer surface is for expanding the concentric collet. The inner surface forms a through hole for slidably fitting the tool. The flow path is for taking in air used for sucking the chips inside the collet bush. The tool driving device includes the above-mentioned collet bush and the concentric collet.

Abstract: According to one implementation, a drill includes the first cutting edges, the second cutting edges and a deflection reducer. The first cutting edges drill a prepared hole to a workpiece. The first cutting edges are formed in a tip side of the drill. The first point angle and each first relief angle of the first cutting edges continuously or intermittently decrease from the tip side toward a rear end side of the drill. The second cutting edges ream the prepared hole. The second cutting edges are formed at positions away in the rear end side from the first cutting edges. The second cutting edges have the second relief angles at a maximum diameter position. The deflection reducer reduces deflection of the second cutting edges. The deflection reducer is formed between the first cutting edges and the second cutting edges. The deflection reducer is inserted into the prepared hole.

Abstract: According to one implementation, a drill includes the first cutting edges, the second cutting edges and a deflection reducer. The first cutting edges drill a prepared hole to a workpiece. The first cutting edges are formed in a tip side of the drill. The first point angle and each first relief angle of the first cutting edges continuously or intermittently decrease from the tip side toward a rear end side of the drill. The second cutting edges finish the prepared hole. The second cutting edges are formed at positions away in the rear end side from the first cutting edges. The second cutting edges have the second relief angles at a maximum diameter position. The deflection reducer reduces deflection of the second cutting edges by being inserted into the prepared hole. The deflection reducer is formed between the first cutting edges and the second cutting edges.

Abstract: An optical device case (100A) of an embodiment includes: a light-transmitting window member (20A); and a housing (10) which has a space for accommodating a light-receiving element and/or a light-emitting element (OE), wherein the window member (20A) includes a light-transmitting member (22), a polymer film (50) provided on an outer surface of the light-transmitting member (22), the polymer film (50) having a moth-eye structure at its surface, a contact angle of the surface with respect to water being not less than 140°, and a resistance heater (24) provided on an inner surface of the light-transmitting member (22).

Abstract: A worm reducer has: a housing having a wheel housing portion and a worm housing portion; a worm wheel; a worm, a support bearing having an inner ring externally fitted to the tip end portion of the worm and an outer ring; an elastic biasing means elastically biasing the outer ring toward the worm wheel side; and an elastic holding means elastically holding the outer ring from both sides in a direction orthogonal to a biasing direction by the elastic biasing means and to a center axis of the worm housing portion.

Abstract: According to one implementation, a drill includes the first cutting edges, the second cutting edges and a deflection reducer. The first cutting edges drill a prepared hole to a workpiece. The first cutting edges are formed in a tip side of the drill. The first point angle and each first relief angle of the first cutting edges continuously or intermittently decrease from the tip side toward a rear end side of the drill. The second cutting edges finish the prepared hole. The second cutting edges are formed at positions away in the rear end side from the first cutting edges. The second cutting edges have the second relief angles at a maximum diameter position. The deflection reducer reduces deflection of the second cutting edges. The deflection reducer is formed between the first cutting edges and the second cutting edges. The deflection reducer is inserted into the prepared hole.

Abstract: To provide a moth-eye transfer mold and a method of manufacturing a moth-eye transfer mold that provide a simple and inexpensive manufacturing process. A moth-eye transfer mold 1 is characterized by including a base 10, an underlayer 20 formed on the base 10, and a glassy carbon layer 30 formed on the underlayer 20, the glassy carbon layer 30 has an inverted moth-eye structure RM over a surface 30a, and the inverted moth-eye structure RM is randomly arranged cone-shaped pores.

Abstract: According to one implementation, a drill includes the first cutting edges, the second cutting edges and a deflection reducer. The first cutting edges drill a prepared hole to a workpiece. The first cutting edges are formed in a tip side of the drill. The first point angle and each first relief angle of the first cutting edges continuously or intermittently decrease from the tip side toward a rear end side of the drill. The second cutting edges ream the prepared hole. The second cutting edges are formed at positions away in the rear end side from the first cutting edges. The second cutting edges have the second relief angles at a maximum diameter position. The deflection reducer reduces deflection of the second cutting edges. The deflection reducer is formed between the first cutting edges and the second cutting edges. The deflection reducer is inserted into the prepared hole.

Abstract: To provide a moth-eye transfer mold and a method of manufacturing a moth-eye transfer mold that provide a simple and inexpensive manufacturing process. A moth-eye transfer mold 1 is characterized by including a base 10, an underlayer 20 formed on the base 10, and a glassy carbon layer 30 formed on the underlayer 20, the glassy carbon layer 30 has an inverted moth-eye structure RM over a surface 30a, and the inverted moth-eye structure RM is randomly arranged cone-shaped pores.

Abstract: A manufacturing method of a mold, the mold having at its surface a plurality of recessed portions whose two-dimensional size is not less than 10 nm and less than 500 nm when viewed in a direction normal to the surface, the method including: (a) providing a mold base, (b) partially anodizing an aluminum alloy layer, thereby forming a porous alumina layer which has a plurality of minute recessed portions; and (c) after step (b), bringing the porous alumina layer into contact with a first etching solution, thereby enlarging the plurality of minute recessed portions of the porous alumina layer. Step (a) of providing the mold base includes (a1) providing a metal base, (a2) forming an aluminum alloy layer on the metal base, and (a3) forming a surface protection layer on the aluminum alloy layer. Step (a2) and step (a3) are performed in a same chamber.

Abstract: An optical device case (100A) of an embodiment includes: a light-transmitting window member (20A); and a housing (10) which has a space for accommodating a light-receiving element and/or a light-emitting element (OE), wherein the window member (20A) includes a light-transmitting member (22), a polymer film (50) provided on an outer surface of the light-transmitting member (22), the polymer film (50) having a moth-eye structure at its surface, a contact angle of the surface with respect to water being not less than 140°, and a resistance heater (24) provided on an inner surface of the light-transmitting member (22).

Abstract: Provided are a resin substrate laminate which enables a resin substrate to be easily released from a release layer by a brief light irradiation process using a low-energy laser beam, and a method for manufacturing an electronic device using the resin substrate laminate. The resin substrate laminate includes a release layer-attached support substrate 4, which has a support substrate 1 and a release layer 2 laminated on the support substrate 1, and a resin substrate 3 which is releasably laminated on a surface, which is opposite to the support substrate 1, of the release layer 2, in which a composition of a surface of the release layer 2 is SixCyOz (0.05?x?0.49, 0.15?y?0.73, 0.22?z?0.36, x+y+z=1).

Abstract: This manufacturing method of a metal component enables precision processing of a corner portion, and the radius of curvature of a cog tip of a gear and the like can be made smaller than before. The manufacturing method of a metal component includes: (a) forming a mask film having, in plan view, a first side, a second side, and an extension portion that extends from a region between the first side and the second side on a metal film; and (b) forming a corner portion having, in plan view, a third side and a fourth side by etching the metal film.

Abstract: A mold base of an embodiment is a mold base for use in manufacture of a mold that has a porous alumina layer over its surface, including: a base; and an aluminum alloy layer provided on the base, wherein the aluminum alloy layer contains aluminum, a non-aluminum metal element, and nitrogen. The aluminum alloy layer of the mold base of an embodiment of the present invention has high specularity.

Abstract: This manufacturing method of a metal component enables precision processing of a corner portion, and the radius of curvature of a cog tip of a gear and the like can be made smaller than before. The manufacturing method of a metal component includes: (a) forming a mask film having, in plan view, a first side, a second side, and an extension portion that extends from a region between the first side and the second side on a metal film; and (b) forming a corner portion having, in plan view, a third side and a fourth side by etching the metal film.