Abstract: A toner comprising a toner particle including a resin component, wherein the resin component includes an olefin copolymer including ester group having specific structures Y1 and Y2 and an olefin copolymer including acid group having an acid value of from 50 mg KOH/g to 300 mg KOH/g, the amount of the olefin copolymer including ester group is 50% by mass or more, the toner particle has a surface layer including the olefin copolymer including acid group which has formed a salt with a metal, the metal is at least one metal selected from the group consisting of Mg, Ca, Sr, Al, and Zn, and the total amount of the metal in the toner is from 25 ppm to 500 ppm.

Abstract: A toner including a toner particle having a core-shell structure that has a core formed from a resin 1 and a shell formed from a resin 2 on the surface of the core, wherein the resin 1 contains more than 50 mass % of an ester group-containing olefin-based copolymer, the ester group-containing olefin-based copolymer has a monomer unit Y1 represented by formula (1) below, and at least one type of monomer unit Y2 selected from the group consisting of monomer units represented by formula (2) and formula (3) below, the ester group concentration in the ester group-containing olefin-based copolymer is from 2 mass % to 18 mass %, and the resin 2 is an amorphous resin having a Tg value of from 50° C. to 70° C.

Abstract: A friction stir spot welding apparatus includes a pin member, a shoulder member, a rotation driver, a forward/backward movement driver, and a controller. The controller controls the forward/backward movement driver, such that the pin member and/or the shoulder member press workpieces before a clamp member presses the workpieces, and then controls the rotation driver and the forward/backward movement driver, such that the pin member and the shoulder member stir the workpieces.

Abstract: A toner comprising a toner particle including a resin component, wherein the resin component includes an olefin copolymer including ester group having specific structures Y1 and Y2 and an olefin copolymer including acid group having an acid value of from 50 mg KOH/g to 300 mg KOH/g, the amount of the olefin copolymer including ester group is 50% by mass or more, the toner particle has a surface layer including the olefin copolymer including acid group which has formed a salt with a metal, the metal is at least one metal selected from the group consisting of Mg, Ca, Sr, Al, and Zn, and the total amount of the metal in the toner is from 25 ppm to 500 ppm.

Abstract: A toner comprising: a toner particle that contains a resin component and a silicone compound, wherein the resin component contains at least 50 mass % of olefin resin; a content of the silicone compound is from 1 mass part to 42 mass parts per 100 mass parts of the resin component; a weight-average molecular weight of the silicone compound as measured by GPC is from 1,000 to 25,000; and a content, in a molecular weight distribution of the silicone compound as measured by GPC, of a component having a weight-average molecular weight of not more than 500 is not more than 0.05 mass % of the silicone compound.

Abstract: A toner includes a toner particle containing a resin component containing an olefin copolymer, wherein the olefin copolymer includes a specific monomer unit Y1 and a specific monomer unit Y2, and the content of the olefin copolymer in the resin component is more than 50 mass % based on the total mass of the resin component, and the olefin copolymer has a melting point of 80° C. or more and 150° C. or less.

Abstract: A toner comprising a toner particle that contains a hybrid resin A and a crystalline polyester resin B, wherein the hybrid resin A has a polyester segment, and a polypropylene glycol segment that has a number-average molecular weight of at least 300, the polyester segment has a structure derived from a condensation reaction between a dicarboxylic acid and a diol, and has an aromatic ring in at least one of the dicarboxylic acid and the diol, and the following condition is satisfied: |SPh?SPc|?|SPp?SPc|<1 where, SPh is SP value of the polyester segment of the hybrid resin A, SPc is SP value of the crystalline polyester resin B, and SPp is SP value of the polypropylene glycol segment of the hybrid resin A.

Abstract: A toner in which the content of polysiloxane is 1% by mass or more and 15% by mass or less based on the total mass of toner particles, the polysiloxane is present in the toner as a domain of 10 nm or more and 500 nm or less, and Siloxane index (Ge)/Siloxane index (D) of the toner particles is 1.0 or less.

Abstract: A method for producing a toner includes a step (1) of forming resin microparticles in an aqueous medium in the presence of a surfactant, a step (2) of aggregating the resin microparticles to form aggregated particles, and a step (3) of heating and the aggregated particles and allowing the aggregated particles to coalesce to form toner particles, in which a resin component in the resin microparticles contains an olefinic copolymer and resin A, the resin A has an acid value of 1 mgKOH/g or more and 50 mgKOH/g or less, the resin A has a SP value of 19.0 (J/cm3)0.5 or more and 21.0 (J/cm3)0.5 or less, and the resin component has an olefinic copolymer content of 50% by mass or more with respect to the total mass of the resin component.

Abstract: A toner including a toner particle having a core-shell structure that has a core formed from a resin 1 and a shell formed from a resin 2 on the surface of the core, wherein the resin 1 contains more than 50 mass % of an ester group-containing olefin-based copolymer, the ester group-containing olefin-based copolymer has a monomer unit Y1 represented by formula (1) below, and at least one type of monomer unit Y2 selected from the group consisting of monomer units represented by formula (2) and formula (3) below, the ester group concentration in the ester group-containing olefin-based copolymer is from 2 mass % to 18 mass %, and the resin 2 is an amorphous resin having a Tg value of from 50° C. to 70° C.

Abstract: A toner including: a binder resin containing an ethylene-vinyl acetate copolymer; a polysiloxane derivative A represented by structural formula 1; and a polysiloxane derivative B represented by structural formula 2: (in structural formula 1, R1 to R10 each independently represent a methyl group or a phenyl group, and l, m and n each independently represent an integer of at least 1) (in structural formula 2, at least one of R11 to R20 is an organic group having a C4-30 alkyl group, a C4-30 alkoxy group, an acrylic group, an amino group, a methacrylic group or a carboxyl group, the remaining groups among R11 to R20 each independently represent a methyl group or a phenyl group, and p, q and r each independently represent an integer of at least 1).

Abstract: A toner comprising a toner particle including a resin component, wherein the resin component includes an olefin resin and an olefin copolymer including a hydroxyl group, the olefin resin has a specific monomer unit Y1, the olefin copolymer including a hydroxyl group has a specific monomer unit Z1 and Z2, a hydroxyl value of the olefin resin is not more than 10 mg KOH/g, a hydroxyl value of the olefin copolymer including a hydroxyl group is at least 20 mg KOH/g and not more than 250 mg KOH/g, and a content of the olefin resin in the resin component is more than 50 mass % with respect to a total mass of the resin component.

Abstract: A toner having a toner particle containing a resin component, wherein the resin component contains an olefin copolymer having ester group and the like, which has a unit (1), and a unit Y2 that is at least one selected from (2) and (3), the content of the copolymer in the resin component is at least 50 mass % with respect to the total mass of the resin component, and the content of the monomer unit Y2 is 3 to 35 mass % with respect to the total mass of the copolymer; in formulas (1) to (3), R1, R2 and R4 each independently represent H or CH3, and R3 and R5 each independently represent CH3 or C2H5.

Abstract: A device for positioning a processing tool: a processing tool for processing the to-be-processed workpiece's surface while pressing the surface to be processed; a movement mechanism able to displace processing tool's distal end in a first direction orthogonal to the surface to be processed and/or a second direction parallel with the surface to be processed; a force sensor able to detect a force in the first and second direction applied to the processing tool's distal end pressed onto the surface to be processed; and a control device for executing a correction step for controlling the movement mechanism so the surface to be processed is pressed while the distal end's position of the processing tool is aligned with a processing reference position on the surface to be processed, and correcting the processing tool's position so that the force in the second direction is within a specific value or less.

Abstract: A server apparatus includes a detection unit and a generation unit. The detection unit detects a change in information to be used for access to content provided by a web service. The generation unit generates, in a case where the change is detected, second content in which the information with new settings is added to first content which is associated with the information before the change.

Abstract: A toner comprising a toner particle that contains a hybrid resin A and a crystalline polyester resin B, wherein the hybrid resin A has a polyester segment, and a polypropylene glycol segment that has a number-average molecular weight of at least 300, the polyester segment has a structure derived from a condensation reaction between a dicarboxylic acid and a diol, and has an aromatic ring in at least one of the dicarboxylic acid and the diol, and the following condition is satisfied: |SPh?SPc|?|SPp?SPc|<1 where, SPh is SP value of the polyester segment of the hybrid resin A, SPc is SP value of the crystalline polyester resin B, and SPp is SP value of the polypropylene glycol segment of the hybrid resin A.

Abstract: An object of the present invention is to provide a toner that exhibits high levels of the low-temperature fixability, storability, and charging performance all at the same time. The toner of the present invention is a toner that has a toner particle comprising a crystalline resin and an amorphous resin, the toner being characterized in that the toner satisfies 0.00?(Wt2/Wt1)?0.50; the toner particle has a matrix-domain structure in which domains of the crystalline resin are present in a matrix of the amorphous resin; at least 90 number % of the crystalline resin domains are domains with a diameter from 0.05 ?m to 0.50 ?m; and SF1 for the crystalline resin domains is from 100 to 130.

Abstract: A method for producing a toner includes a step (1) of forming resin microparticles in an aqueous medium in the presence of a surfactant, a step (2) of aggregating the resin microparticles to form aggregated particles, and a step (3) of heating and the aggregated particles and allowing the aggregated particles to coalesce to form toner particles, in which a resin component in the resin microparticles contains an olefinic copolymer and resin A, the resin A has an acid value of 1 mgKOH/g or more and 50 mgKOH/g or less, the resin A has a SP value of 19.0 (J/cm3)0.5 or more and 21.0 (J/cm3)0.5 or less, and the resin component has an olefinic copolymer content of 50% by mass or more with respect to the total mass of the resin component.

Abstract: A toner includes a toner particle containing a resin component. The resin component contains an ester group-containing olefin copolymer and an acid group-containing olefin copolymer. For example, the ester group-containing olefin copolymer is an ethylene-vinyl acetate copolymer, and the acid group-containing olefin copolymer is an ethylene-methacrylic acid copolymer. The acid group-containing olefin copolymer has an acid value of 50 to 300 mg KOH/g. The content of the ester group-containing olefin copolymer in the resin component is 50 mass % or more based on the total mass of the resin component. The content of the unit derived from the vinyl acetate is 3 mass % or more and 35 mass % or less based on the total mass of the ester group-containing olefin copolymer.

Abstract: A toner includes a toner particle containing a resin component containing an olefin copolymer, wherein the olefin copolymer includes a specific monomer unit Y1 and a specific monomer unit Y2, and the content of the olefin copolymer in the resin component is more than 50 mass % based on the total mass of the resin component, and the olefin copolymer has a melting point of 80° C. or more and 150° C. or less.