MAGNETIC TONER COMPOSITION HAVING SUPERIOR ELECTRIFICATION HOMOGENEITY

Title:

MAGNETIC TONER COMPOSITION HAVING SUPERIOR ELECTRIFICATION HOMOGENEITY

Document Type and Number:

WIPO Patent Application WO2003054633

Kind Code:

A3

Abstract:

The present invention relates to a magnetic toner composition, and more particularly to a magnetic toner composition having an improved chargeability and excellent uniform chargeability, and that is capable of reducing a difference in electrostatic charge between a toner remaining in a cartridge or in a developing unit and that of a newly supplied toner. A magnetic toner composition of the present invention comprises magnetic toner particulate comprising a binder resin and a magnetic substance, a conductive fine powder having a specific surface area of 30 to 300 m<2>/g, a hydrophobic silica having a specific surface area of 100 to 240m<2>/g, and an inorganic fine powder having an average diameter of 0.1 to 4.Oµm.

Inventors:

LIM IN-HEE (KR)
LEE CHANG-SOON (KR)
LEE WON-SUP (KR)

Application Number:

PCT/KR2002/002405

Publication Date:

October 16, 2003

Filing Date:

December 20, 2002

Export Citation:

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Assignee:

LG CHEMICAL LTD (KR)
LIM IN-HEE (KR)
LEE CHANG-SOON (KR)
LEE WON-SUP (KR)

International Classes:

G03G9/08; G03G9/083; G03G9/097; (IPC1-7): G03G9/08

Foreign References:

KR000076499A
KR0184559B1	1999-10-01
KR980011625A	1998-04-30
KR20020039858A	2002-05-30

Other References: