MAGNETIC IRON OXIDE PARTICLE POWDER FOR SPHERICAL MAGNETIC TONER AND PRODUCTION OF THE POWDER AND MAGNETIC TONER USING THE SAME

Title:

MAGNETIC IRON OXIDE PARTICLE POWDER FOR SPHERICAL MAGNETIC TONER AND PRODUCTION OF THE POWDER AND MAGNETIC TONER USING THE SAME

Document Type and Number:

Japanese Patent JP3551220

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To obtain the subject powder high in fluidity and resolution and excellent in blackness as magnetic toner particles of small size.
SOLUTION: The objective magnetic iron oxide particle powder as magnetic toner consists of magnetite particles having the following characteristics: average particle diameter: 0.05-0.30μm; containing 1.7-4.5atom%, based on Fe, of silicon; satisfying the relationship: 147-322.7×(d)≤Hc≤207-322.7×(d) (Hc is coercive force in an external magnetic field intensity of 10kOe; (d) is an average particle diameter); and sulfur content: ≤0.35wt.%.

More Like This:

JPS63274626	SYNTHESIS OF FERRITE CONTAINING DIVALENT IRON ION
JP3286642	METHOD OF MANUFACTURING SOFT FERRITE
JPS5943421	[Title of the Invention] A compound which has the stratified structure of a hexagonal system shown by TmFeMgO↓4, and its manufacturing process

Inventors:

Naoki Uchida
Kazuo Fujioka
Isao Aoki
Hiromitsu Misawa
Minoru Yoshizawa

Application Number:

JP17549496A

Publication Date:

August 04, 2004

Filing Date:

June 14, 1996

Export Citation:

Click for automatic bibliography generation Help

Assignee:

Toda Kogyo Co., Ltd.

International Classes:

C01G49/00; C01G49/08; H01F1/00; H01F1/11; G03G9/083; H01F1/36; (IPC1-7): G03G9/083; C01G49/00; C01G49/08; H01F1/00

Domestic Patent References:

JP959024A
JP6345440A
JP39045B2
JP5213620A
JP3201509A
JP6291424A
JP6251208B2

Previous Patent: PICTURE DISPLAY

Next Patent: HYDRAULIC CONTROL VALVE GEAR IN HYDRAULIC BRAKING DEVICE