Toner
AssigneeCanon Kabushiki Kaisha
InventorsJunichi Tamura, Takaho Shibata, Ryuji Murayama, Kenta Mitsuiki, Megumi Shino, Hironori Minagawa
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Abstract
A toner having a toner particle containing a binder resin and a styrene-acrylic resin, the toner being characterized in that the styrene-acrylic resin is a graft polymer having an aliphatic hydrocarbon compound segment and a styrene-acrylic segment, the styrene-acrylic segment has a specific monomer unit, the melting point of the styrene-acrylic segment is from 30° C. to 80° C., and when the toner is measured using a FT-IR ATR method, the intensity assigned to the styrene-acrylic resin and the intensity assigned to the binder resin satisfy a specific relationship.
Claims13
A toner, comprising:
- a toner particle that contains a binder resin and a styrene-acrylic resin,
- the styrene-acrylic resin being a graft polymer having an aliphatic hydrocarbon compound segment and a styrene-acrylic segment;
- the styrene-acrylic segment having a melting point of 30 to 80° C. and comprising a monomer unit represented by formula (1)
- where R1 denotes a hydrogen atom or a methyl group, and n denotes an integer of 22 to 30, wherein
- a content ratio of the monomer unit represented by formula (1) to the styrene-acrylic resin is 50 to 80 mass %, and
- when the toner is measured using a FT-IR ATR method, Z is 1.5 to 9.0 where Z=(Ge-a/Ge-r)/(Dy-a/Dy-r), Ge-a and Ge-r are respectively the intensities assigned to the styrene-acrylic and binder resins when germanium is used as an ATR crystal, and Dy-a and Dy-r are respectively the intensities assigned to the styrene-acrylic and binder resins when diamond is used as the ATR crystal.
Dependencies are inferred from the claim text.