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Title:
TONNER BINDER AND TONNER
Document Type and Number:
WIPO Patent Application WO/2000/004423
Kind Code:
A1
Abstract:
A tonner binder comprising a polycondensate resin (A) such as polyester and a non-polycondensate resin (B) such as styrene resin having a dielectric loss tangent (tan $g(d)) smaller than that of he polycondensate resin (A) is characterized in that the dielectric loss tangent (tan $g(d)$g(a)) of the tonner binder $g(a) is 8x10?-3¿ or less at a measurement frequency of 100 kHz. By blending a colorant ($g(b)) made of a magnetic powder to the tonner binder ($g(a)), a tonner for electrophotography excellent in low-temperature fixability and resistance to hot offset, chargeable with an adequate amount, and having an environment stability can be provided.

Inventors:
NAKANISHI HIDEO (JP)
FUKUSHIMA HAJIME (JP)
KAMEI NOBUAKI (JP)
IWATA MASAKAZU (JP)
UENO MASAKI (JP)
Application Number:
PCT/JP1999/003762
Publication Date:
January 27, 2000
Filing Date:
July 13, 1999
Export Citation:
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Assignee:
SANYO CHEMICAL IND LTD (JP)
NAKANISHI HIDEO (JP)
FUKUSHIMA HAJIME (JP)
KAMEI NOBUAKI (JP)
IWATA MASAKAZU (JP)
UENO MASAKI (JP)
International Classes:
G03G9/087; (IPC1-7): G03G9/087
Foreign References:
JPH06194870A1994-07-15
JPH09204063A1997-08-05
JPH08254852A1996-10-01
JPH07191496A1995-07-28
JPH05165251A1993-07-02
JPH08334925A1996-12-17
JPH06194876A1994-07-15
JPH02158747A1990-06-19
JPH02167563A1990-06-27
JPH02190868A1990-07-26
JPH09146303A1997-06-06
JPH09325518A1997-12-16
Attorney, Agent or Firm:
Yano, Masayuki (Takeda Tobadonocho Fushimi-ku Kyoto-shi Kyoto, JP)
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