焼結粒子及びそれを用いた電子写真現像剤用キャリア、電子写真用現像剤並びに焼結粒子の製造方法

Japanese Patent JP5735779

B2

PROBLEM TO BE SOLVED: To provide sintered particle in which breaking and chipping are hardly generated even in the long term use and which is excellent in durability and a method for producing the same.SOLUTION: The sintered particle contains metal iron and FeOas main components and has a void ratio of 5% or less. It is preferable that the ratio (I/I) of the maximum peak value (I) of the FeOand the maximum peak value (I) of the metal iron is 0.05 to 0.70 by powder X-ray diffraction method from a standpoint for further improving the mechanical strength of the sintered particle. Further it is preferable that a specific surface area by a BET method is 0.09 m/g or less and an absolute specific gravity is 4.95 g/cmor more. Furthermore, it is preferable that a saturated magnetization is in a range of 70-120 Am/kg.

JPH02197501	PRODUCTION OF FERROMAGNETIC METAL POWDER
JP3596751	Hard particles for compounding sintered alloys, wear-resistant iron-based sintered alloys, wear-resistant iron-based sintered alloy manufacturing methods and valve seats
WO/2008/126794	MATERIAL FOR COVERING SURFACE OF HOT DIP GALVANIZING BATH MEMBER, PROCESS FOR PRODUCING THE MATERIAL, AND HOT DIP GALVANIZING BATH MEMBER

Tomonari Yamada
Tomohide Iida

JP2010243371A

June 17, 2015

October 29, 2010

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dowa Electronics Co., Ltd.
dowa ip Creation Co., Ltd.

B22F1/00; B22F3/10; G03G9/107; G03G9/113

JP62030801A
JP2008089869A

Shigeki Yamada

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