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Title:
MAGNETIC RECORDING MEDIUM AND METHOD FOR MANUFACTURING THE SAME
Document Type and Number:
Japanese Patent JP2010086605
Kind Code:
A
Abstract:

To provide a magnetic recording medium which contains ferromagnetic powder composed mostly of iron and has excellent storage stability and traveling durability.

The magnetic recording medium has a magnetic layer containing ferromagnetic powder and a binder on a nonmagnetic support. The magnetic layer contains the ferromagnetic powder which is composed mostly of iron and contains a phosphate compound and a hydroxy dicarboxylic acid compound at a mass ratio of 90:10 to 10:90 while the total amount of compounds is 1.5-7 pts.mass per 100 pts.mass of the ferromagnetic powder. The method for manufacturing the magnetic recording medium including the magnetic layer containing the ferromagnetic powder and the binder on the nonmagnetic support includes forming the magnetic layer on the nonmagnetic support by applying and drying an application liquid for generating the magnetic layer which contains the ferromagnetic powder composed mostly of iron and contains the phosphate compound and the hydroxy dicarboxylic acid compound at the mass ratio of 90:10 to 10:90 while the total amount of compounds is 1.5-7 pts.mass per 100 pts.mass of the ferromagnetic powder.


Inventors:
RYOMO KATSUMI
Application Number:
JP2008254610A
Publication Date:
April 15, 2010
Filing Date:
September 30, 2008
Export Citation:
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Assignee:
FUJIFILM CORP
International Classes:
G11B5/712; G11B5/702; G11B5/706; G11B5/842
Attorney, Agent or Firm:
Patent Service Corporation Patent Office Sykes