Abstract: A method for producing an actinic ray-sensitive or radiation-sensitive resin composition, the method including passing a solution including an acid compound having a pKa of 2.0 or more through a column packed with an ion-exchange resin, producing an onium salt by using the acid compound having been passed through the column, and mixing together the onium salt and a resin that undergoes an increase in polarity due to action of acid.

Abstract: An actinic ray-sensitive or radiation-sensitive resin composition containing: a resin (A) of which polarity increases by an action of an acid, the resin (A) having a repeating unit represented by General Formula (A1) as defined herein; and a compound (B) that generates an acid upon irradiation with actinic rays or radiation.

Abstract: A recording apparatus includes a conveyance unit, a carriage, a recording head, a frame, and a guide member. The conveyance unit conveys a sheet in a conveyance direction. The carriage moves in a scanning direction crossing the conveyance direction and has a first abutment portion and a second abutment portion higher in position than the first abutment portion. The recording head is mounted on the carriage, arranged to face a sheet conveyed by the conveyance unit, and ejects a liquid onto the conveyed sheet to record an image. The frame has a first sliding portion in abutment with the first abutment portion and has a second sliding portion in abutment with the second abutment portion. The guide member supports the carriage and is fixed to the frame at a position separated from the first sliding portion.

Abstract: A method for producing a resin having a repeating unit that is decomposed by irradiation of an actinic ray or a radiation to generate acid, the method including polymerizing a specific compound represented by General formula (P-1) and a copolymerizable monomer compound, a method for producing an actinic ray-sensitive or radiation-sensitive resin composition, a pattern forming method, and a resin corresponding to a reaction intermediate of the resin.

Abstract: A resin composition containing a fluorine-containing polymer and a methacrylate resin. The fluorine-containing polymer and the methacrylate resin have a mass ratio of 35/65 to 95/5. The fluorine-containing polymer contains a vinylidene fluoride unit and a tetrafluoroethylene unit. The vinylidene fluoride unit and the tetrafluoroethylene unit have a mole ratio of 81/19 to 99/1. Also disclosed is a molded article containing the resin composition.

Abstract: A plug auxiliary fitting includes a plug side-wall facing portion facing a side surface of a plug housing. The plug side-wall facing portion includes a plug electrical connecting portion capable of coming into electrical contact with a receptacle auxiliary fitting, and a plug mating lock portion that cooperates with the receptacle auxiliary fitting to prevent a mating state between a plug connector and a receptacle connector from being released. The plug electrical connecting portion and the plug mating lock portion are, in a direction parallel to a plug-connector mounting surface of a plug-side board, adjacent to each other with a notch opened toward the plug-connector mounting surface of the plug-side board interposed therebetween. The plug mating lock portion is provided with a soldering portion solderable to the plug-connector mounting surface of the plug-side board.

Abstract: A long film containing a cellulose acylate and a compound A having a molecular weight of less than 1,000 which satisfies conditions 1-4. Condition 1: containing two or more aromatic rings each directly connected to a hydroxyl group in a molecule. Condition 2: containing one or more carbon atoms directly connected to an aromatic ring directly connected to a hydroxyl group and do not constitute the aromatic ring in a molecule, the carbon atoms being directly connected to 1 to 3 aromatic rings. Condition 3: Each carbon atom directly connected to an aromatic ring directly connected to a hydroxyl group and not constituting the aromatic ring has no bond with a hydrogen atom. Condition 4: Each carbon atom directly connected to an aromatic ring directly connected to a hydroxyl group and not constituting the aromatic ring is bonded by a single bond to atoms other than hydrogen atoms.

Abstract: A plug auxiliary fitting includes a plug side-wall facing portion facing a side surface of a plug housing. The plug side-wall facing portion includes a plug electrical connecting portion capable of coming into electrical contact with a receptacle auxiliary fitting, and a plug mating lock portion that cooperates with the receptacle auxiliary fitting to prevent a mating state between a plug connector and a receptacle connector from being released. The plug electrical connecting portion and the plug mating lock portion are, in a direction parallel to a plug-connector mounting surface of a plug-side board, adjacent to each other with a notch opened toward the plug-connector mounting surface of the plug-side board interposed therebetween. The plug mating lock portion is provided with a soldering portion solderable to the plug-connector mounting surface of the plug-side board.

Abstract: A resin composition containing a fluorine-containing polymer and a methacrylate resin. The fluorine-containing polymer and the methacrylate resin have a mass ratio of 35/65 to 95/5. The fluorine-containing polymer contains a vinylidene fluoride unit and a tetrafluoroethylene unit. The vinylidene fluoride unit and the tetrafluoroethylene unit have a mole ratio of 81/19 to 99/1. Also disclosed is a molded article containing the resin composition.

Abstract: Provided are an actinic ray-sensitive or radiation-sensitive resin composition including a compound (A) whose dissolution rate in an alkali developer decreases by the action of an acid, a resin (B) having a group that decomposes by the action of an alkali developer to increase the solubility in the alkali developer and having at least one of a fluorine atom or a silicon atom, and a resin (C) having a phenolic hydroxyl group, different from the resin (B), an actinic ray-sensitive or radiation-sensitive film and a mask blank, each formed using the actinic ray-sensitive or radiation-sensitive resin composition, a pattern forming method using the actinic ray-sensitive or radiation-sensitive resin composition, and a method for manufacturing an electronic device.

Abstract: A polylactic acid resin composition of the present invention is constructed by dynamically cross-linking a resin mixture containing a polylactic acid-based resin, trans-polyisoprene, and a cross-linking agent. The resin composition can be used for a wide variety of applications such as automobile molded articles, molded articles for electric products, molded articles for agricultural materials, molded articles for business use, and molded articles for daily use.

Abstract: The composition contains an alkali-soluble resin and a crosslinking agent that is represented by the following General Formula (I). In the formula, each of R1 and R6 independently represents a hydrogen atom or a hydrocarbon group having 5 or less carbon atoms; each of R2 and R5 independently represents an alkyl group, a cycloalkyl group, an aryl group, or an acyl group; and each of R3 and R4 independently represents a hydrogen atom or an organic group having 2 or more carbon atoms, and R3 and R4 may be bonded to each other to form a ring.

Abstract: There is provided an active light sensitive or radiation sensitive resin composition which contains (A) an alkali soluble resin and (C) a cross-linking agent represented by the following General Formula (1-0).

Abstract: A pattern forming, method, includes: (i) forming a film from an actinic ray-sensitive or radiation-sensitive resin composition that contains (A) a compound capable of generating an acid upon irradiation with an actinic ray or radiation and decomposing by an action of an acid to decrease a solubility of the compound (A) for an organic solvent; (ii) exposing the film; and (iii) performing development by using a developer containing an organic solvent.

Abstract: A long film containing a cellulose acylate and a compound A having a molecular weight of less than 1,000 which satisfies conditions 1-4. Condition 1: containing two or more aromatic rings each directly connected to a hydroxyl group in a molecule. Condition 2: containing one or more carbon atoms directly connected to an aromatic ring directly connected to a hydroxyl group and do not constitute the aromatic ring in a molecule, the carbon atoms being directly connected to 1 to 3 aromatic rings. Condition 3: Each carbon atom directly connected to an aromatic ring directly connected to a hydroxyl group and not constituting the aromatic ring has no bond with a hydrogen atom. Condition 4: Each carbon atom directly connected to an aromatic ring directly connected to a hydroxyl group and not constituting the aromatic ring is bonded by a single bond to atoms other than hydrogen atoms.

Abstract: A double side welding method used for producing a differential gear for welding a weld part to join a ring gear fitted on a gear case from both sides. The method uses welding distortion caused by welding to improve product accuracy. The method includes welding from both sides of a weld part where a first member and a second member, which are the objects being joined, face each other. The method is performed by first welding, which is performed from one side, and second welding, which is performed from the other opposite side from that first welding. Heat quantity adjustment, that adjusts the quantity of heat input to the weld part for the second welding, is performed after the first welding, and is carried out such that an amount of welding distortion that is the objective arises.

Abstract: A polylactic acid resin composition of the present invention is constructed by dynamically cross-linking a resin mixture containing a polylactic acid-based resin, trans-polyisoprene, and a cross-linking agent. The resin composition can be used for a wide variety of applications such as automobile molded articles, molded articles for electric products, molded articles for agricultural materials, molded articles for business use, and molded articles for daily use.

Abstract: An actinic ray-sensitive or radiation-sensitive resin composition includes an alkali-soluble resin (A) having a phenolic hydroxyl group, and a crosslinking agent (C) having two or more hydroxymethyl groups or alkoxymethyl groups in total within the molecule, wherein the composition contains a crosslinking agent (C1) having a molecular weight of 420 or more and also having two to four hydroxymethyl groups or alkoxymethyl groups in total within the molecule in a proportion of 60 mol % to 100 mol % based on the total amount of the crosslinking agent (C) including the crosslinking agent (C1), and in which the total concentration of the hydroxymethyl groups or the alkoxymethyl groups of the crosslinking agent (C) relative to 1 g of the solid content in the actinic ray-sensitive or radiation-sensitive resin composition is 0.30 mmol/g or more.

Abstract: A semiconductor chip has an evaluation pattern that is included in a monitor pattern. This evaluation pattern is constituted by a first pattern and a second pattern opposite to each other in an X direction. Further, the first pattern is constituted by a convex shape protruding in a direction away from the second pattern in the X direction.

Abstract: An actinic ray-sensitive or radiation-sensitive resin composition includes an alkali-soluble resin (A) and a compound (B) exemplified below, the compound (B) has a specific structure within a molecule.