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US 11,036,155 B2Granted
Toner for electrostatic image development, electrostatic image developer, and toner cartridge
AssigneeFUJIFILM Business Innovation Corp.
InventorsKazutsuna Sasaki, Yutaka Saito, Kazuhiko Nakamura, Yuka Yamagishi
Life of this patent
Estimating the term…
Abstract
A toner for electrostatic image development contains: toner base particles containing at least a nonionic surfactant, a binder resin, and a release agent; and an external additive. The content of the nonionic surfactant is from 0.05% by mass to 1% by mass inclusive based on the total mass of the toner, and the external additive contains tin oxide particles.
Claims17
A toner for electrostatic image development comprising:
- toner base particles containing at least a nonionic surfactant, an anionic surfactant, a binder resin, and a release agent;
- and
- an external additive,
- wherein a content of the nonionic surfactant is from 0.7% by mass to 1% by mass inclusive based on a total mass of the toner,
- wherein the external additive contains particles consisting of tin oxide,
- wherein a content of the particles consisting of tin oxide is from 0.1% by mass to 2.0% by mass inclusive based on the total mass of the toner, and
- wherein a number average particle diameter of the particles consisting of tin oxide is from 0.08 μm to 4.8 μm.
4 more elements
A toner for electrostatic image development comprising:
- toner base particles containing at least a nonionic surfactant, a binder resin, and a release agent;
- and
- an external additive,
- wherein a content of the nonionic surfactant is from 0.7% by mass to 1% by mass inclusive based on a total mass of the toner,
- wherein the external additive contains tin oxide particles, and
- wherein the binder resin contains a crystalline resin.
3 more elements
Dependencies are inferred from the claim text.