Patent ID: 11884816
Assignee: FUJIFILM BUSINESS INNOVATION CORP.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  G | IPC C  G

Claim 0:
1. A resin particle comprising:
a binder resin comprising:
a first binder resin comprising polyurethane; and
a second binder resin that is different than the first binder resin, the second binder resin comprising a styrene-acrylic copolymer or a polyester resin;

a fluorescent colorant A; and
a colorant B other than the fluorescent colorant A,
wherein:
the resin particle includes a sea-island structure comprising:
a region RA that forms an island structure in which a content of the fluorescent colorant A is larger than a content of the colorant B, wherein the region RA includes the first binder resin; and
a region RB that forms a sea structure in which a content of the colorant B is larger than a content of the fluorescent colorant A, wherein the region RB includes the second binder resin, and

a ratio VI/VT of a volume average particle diameter VI of the island structure in the sea-island structure to a volume average particle diameter VT of the resin particle is 0.15 or more and 0.80 or less.