Two-component developer, developing device, image forming apparatus, and image forming method

US9304420B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9304420-B2
Application numberUS-83510610-A
CountryUS
Kind codeB2
Filing dateJul 13, 2010
Priority dateJul 13, 2009
Publication dateApr 5, 2016
Grant dateApr 5, 2016

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  6. CPC / IPC classifications

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

A two-component developer is provided. The two-component developer includes a toner containing a binder resin, a colorant and a release agent, and a resin-coated carrier composed of a carrier core material and a resin coating layer formed on a surface of the carrier core material. The toner has an exposure rate of the release agent on the toner surface of 1.00% or above and 3.07% or below. The carrier core material has an apparent density of 1.86 g/cm 3 or more and 2.45 g/cm 3 or less. The exposure rate of the release agent of the toner and the apparent density of the carrier core material satisfy the following formula (1): y ≦−1.54 x +5.93  (1) wherein y represents the exposure rate of the release agent of the toner, and x represents the apparent density of the carrier core material.

First claim

Opening claim text (preview).

What is claimed is: 1. A two-component developer comprising a toner including a binder resin, a colorant and a release agent, the toner having an exposure rate of the release agent on the toner surface of 1.00% or above and 3.07% or below, and the toner having a dispersion diameter of a release agent exposed on the toner surface of 200 nm or less and a resin-coated carrier comprising a carrier core material and a resin coating layer formed on a surface of the carrier core material…

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What does patent US9304420B2 cover?
A two-component developer is provided. The two-component developer includes a toner containing a binder resin, a colorant and a release agent, and a resin-coated carrier composed of a carrier core material and a resin coating layer formed on a surface of the carrier core material. The toner has an exposure rate of the release agent on the toner surface of 1.00% or above and 3.07% or below. The …
Who is the assignee on this patent?
Yoshioka Nobuyuki, Kamoto Takanori, Wada Osamu, and 2 more
What technology area does this patent fall under?
Primary CPC classification G03G9/0825. Mapped technology areas include Physics.
When was this patent published?
Publication date Tue Apr 05 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).