IP Library › Granted Patent US 10,088,766
Granted Patent B2
US 10,088,766 · App. 15/538,717 · Granted Oct 2, 2018

Layered inorganic mineral, toner, and image forming apparatus

Inventors: Hideyuki Santo (Kanagawa, JP); Tsuyoshi Sugimoto (Shizuoka, JP); Shinya Nakayama (Shizuoka, JP); Suzuka Amemori (Shizuoka, JP); Hiroshi Yamada (Shizuoka, JP); Ryuta Chiba (Kanagawa, JP); Kohsuke Nagata (Shizuoka, JP)
Assignee: Ricoh Company, Ltd.
G03G9/08755C01B33/44G03G9/0806C01B33/40G03G5/14708G03G9/0904G03G9/09766G03G9/09775
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Quick Facts
Patent No.
US 10,088,766
App. No.
15/538,717
Granted
Oct 2, 2018
Kind
B2
Abstract

A layered inorganic mineral including a surface treated with a fluorine-containing compound, where the layered inoganic mineral that can be favorably used for a toner that is excellent in high charging ability, charging stability, and low temperature fixing ability, and that can exhibits high reliability during cleaning.

Claims (13)

1. A toner comprising:

a layered inorganic mineral comprising a surface treated with a fluorine-containing compound, wherein the fluorine-containing compound comprises a fluoroalkyl group.

2. An image forming apparatus comprising:

an electrostatic latent image bearer;

an electrostatic latent image forming unit configured to form an electrostatic latent image on the electrostatic latent image bearer; and

a developing unit containing a toner and configured to develop the electrostatic latent image formed on the electrostatic latent image bearer to form a visible image,

wherein the toner is the toner according to claim 1 .

3. The toner according to claim 1 , wherein the layered inorganic mineral further comprises ions present between layers of the layered inorganic mineral, wherein at least a portion of the ions is modified with organic ions.

4. The toner according to claim 1 , wherein the fluorine-containing compound is a silane coupling agent.

5. The toner according to claim 1 , wherein the layered inorganic mineral binds a fluorine compound on the surface by the silane coupling agent.

6. The toner according to claim 4 , wherein the silane coupling agent is represented by Formula (2):

RaSiRb 3   (2),

wherein Ra is a hydrocarbon comprising a fluoromethyl group, the hydrocarbon optionally comprising a functional group, and Rb is a hydrolyzable group or a hydroxyl group.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 22, 2017
From: SANTO, HIDEYUKI; SUGIMOTO, TSUYOSHI; NAKAYAMA, SHINYA; AMEMORI, SUZUKA; YAMADA, HIROSHI; CHIBA, RYUTA; NAGATA, KOHSUKE
To: RICOH COMPANY LTD.
Reel/Frame 042782/0309 →
Priority Claims (1)
JP 2014-259773 · Dec 24, 2014 · national
Continuity (1)
Related Publication 20170371257A1 · Dec 28, 2017
Cited By (3)
US 12,204,277 US 12,306,580 US 12,411,429