Back to results
US 10,852,651 B2Granted
Electrostatic-image developer and process cartridge
AssigneeFuji Xerox Co., Ltd.
InventorsYasuaki Hashimoto, Yosuke Tsurumi, Hiroaki Saijo
Life of this patent
Estimating the term…
Abstract
An electrostatic-image developer includes a toner and a resin-coated carrier. The toner includes toner particles including a binder resin, a release agent, and a non-ionic surfactant. The resin-coated carrier includes magnetic particles and a resin layer covering the magnetic particles. The resin layer includes inorganic particles having a volume resistivity of 1×100 Ω·cm or more and 1×104 Ω·cm or less.
Claims13
An electrostatic-image developer comprising:
- a toner including toner particles, the toner particles including a binder resin, a release agent, and a non-ionic surfactant;
- and
- a resin-coated carrier including magnetic particles and a resin layer covering the magnetic particles, the resin layer including inorganic particles having a volume resistivity of 1×100 Ω·cm or more and 1×104 Ω·cm or less,
- wherein a volume fraction of the inorganic particles in the resin layer is 5% by volume or more and 50% by volume or less, and
- an amount of the inorganic particles having the volume resistivity of 1×100 Ω·cm or more and 1×104 Ω·cm or less included in the resin layer is 85% by mass or more of a total amount of all inorganic particles included in the resin layer.
2 more elements
Dependencies are inferred from the claim text.