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Title:
TONER FOR DEVELOPMENT OF ELECTROSTATIC CHARGE IMAGE
Document Type and Number:
WIPO Patent Application WO/2014/157424
Kind Code:
A1
Abstract:
Provided is a toner that exhibits an excellent balance between heat-resistant storage properties and low-temperature fixing properties, and that exhibits excellent hot offset resistance. The toner for development of an electrostatic charge image contains an external additive and colored resin particles that comprise a binder resin, a coloring agent, and a softening agent, and is characterized by: the softening agent containing, proportionally, 95-99 mass% of a monoester compound (A) having a structure that is represented by formula (1) and 1-5 mass% of a monoester compound (B) having a structure that is represented by formula (2); and by containing 10-30 parts by mass of the softening agent with respect to 100 parts by mass of the binder resin (100). Formula (1): R1-COO-R2 (in formula (1), R1 represents a straight-chain alkyl group having a carbon number of 17-23, R2 represents a straight-chain alkyl group having a carbon number of 16-22, and the total carbon number of R1 and R2 is 39). Formula (2): R3-COO-R4 (in formula (2), R3 represents a straight-chain alkyl group having a carbon number of 15-21, R4 represents a straight-chain alkyl group having a carbon number of 16-22, and the total carbon number of R3 and R4 is 35-37).

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Inventors:
MASUDA AZUSA (JP)
OHTA RYUJI (JP)
YAMADA MUNEHIRO (JP)
ITAKO NORIFUMI (JP)
UEMURA RYOSUKE (JP)
Application Number:
PCT/JP2014/058695
Publication Date:
October 02, 2014
Filing Date:
March 26, 2014
Export Citation:
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Assignee:
ZEON CORP (JP)
NOF CORP (JP)
International Classes:
G03G9/08
Foreign References:
JP2013047702A2013-03-07
JP2013015673A2013-01-24
JP2005215256A2005-08-11
JPH0850367A1996-02-20
JP2013148862A2013-08-01
JP2013160809A2013-08-19
JPH0850368A1996-02-20
JP2007206179A2007-08-16
JP2011138120A2011-07-14
JP2012078809A2012-04-19
JP2012018249A2012-01-26
Other References:
See also references of EP 2980648A4
Attorney, Agent or Firm:
KISHIMOTO, Tatsuhito et al. (JP)
Kishimoto Expert (JP)
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