Toner and method for producing toner
AssigneeCanon Kabushiki Kaisha
InventorsHayato Ida, Junichi Tamura, Ryuji Murayama, Takaho Shibata, Daisuke Yamashita, Takashi Hirasa
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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.
Claims17
A toner comprising a toner particle containing a resin component,
- wherein
- the resin component contains an olefin copolymer having ester group and a crosslinked body from an aliphatic hydrocarbon resin having unsaturated bond,
- the olefin copolymer having ester group has:
- a monomer unit Y1 represented by the following formula (1);
- and
- a monomer unit Y2 that is at least one selected from the group consisting of monomer units represented by the following formula (2) and monomer units represented by the following formula (3),
- a content of the olefin copolymer having ester group in the resin component is at least 50 mass % with respect to the total mass of the resin component, and
- a content of the monomer unit Y2 is at least 3 mass % and not more than 35 mass % with respect to the total mass of the olefin copolymer having ester group
- in formulas (1) to (3), R1 represents H or CH3, R2 represents H or CH3, R3 represents CH3 or C2H5, R4 represents H or CH3, and R5 represents CH3 or C2H5.
A method for producing a toner having a toner particle containing a resin component,
- the resin component containing an olefin copolymer having ester group and a crosslinked, body from an aliphatic hydrocarbon resin having unsaturated bond,
- the method comprising:
- a preparation step of preparing a resin fine particle dispersion in which resin fine particles that form the resin component are dispersed in an aqueous medium;
- and
- a crosslinking step of crosslinking, using a crosslinking agent, the aliphatic hydrocarbon resin having unsaturated bond present in the resin fine particles,
- wherein
- the olefin copolymer having ester group has:
- a monomer unit Y1 represented by the following formula (1);
- and
- a monomer unit Y2 that is at least one selected from the group consisting of monomer units represented by the following formula (2) and monomer units represented by the following formula (3),
- a content of the olefin copolymer having ester group in the resin component is at least 50 mass % with respect to the total mass of the resin component, and
- a content of the monomer unit Y2 is at least 3 mass % and not more than 35 mass % with respect to the total mass of the olefin copolymer having ester group
- in formulas (1) to (3), R1 represents H or CH3, R2 represents H or CH3, R3 represents CH3 or C2H5, R4 represents H or CH3, and R5 represents CH3 or C2H5.
Dependencies are inferred from the claim text.