Non-magnetic toner
First Claim
Patent Images
1. A non-magnetic toner, comprising:
- toner particles each containing at least a binder resin, a colorant, and a wax component; and
an inorganic fine powder, wherein the toner particles have a core/shell structure;
a polar resin is present in the shell;
the shell has a Tg of 80°
-120°
C. or a peak molecular weight from 8,000 to 250,000;
the core has a lower Tg or a lower peak molecular weight than the shell; and
(1) when a temperature in a temperature range of 50 to 80°
C. at which a loss tangent (tan) as a ratio of a loss elastic modulus (G″
) of the toner to a storage elastic modulus (G′
) of the toner shows a maximum is represented by T1, a storage elastic modulus of the toner at the temperature T1 (G′
(T1)) (dN/m2) satisfies a relationship of 5.00×
107≦
G′
(T1)≧
1.00×
109;
(2) a continuous temperature range with a width of 15°
C. or more in which the loss tangent (tanδ
) as a ratio of the loss elastic modulus (G″
) of the toner to the storage elastic modulus (G′
) of the toner is 0.80 to 2.00 is present in the temperature range of 50 to 80°
C.; and
(3) the loss tangent (tanδ
) as a ratio of the loss elastic modulus (G″
) of the toner to the storage elastic modulus (G′
) of the toner is always 1.00 or more in a temperature range of 120 to 160°
C.
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Accused Products
Abstract
Provided is anon-magnetic toner including toner particles each containing at least a binder resin, a colorant, and a wax component, and an inorganic fine powder, in which: (1) when a temperature in a temperature range of 50 to 80° C. at which a loss tangent (tan δ) shows a maximum is represented by T1, a storage elastic modulus of the toner at the temperature T1 (G′(T1)) satisfies a relationship of 5.00×107≦G′(T1)≦1.00×109 (dN/m2); (2) a continuous temperature range with a width of 15° C. or more in which the loss tangent (tan δ) is 0.80 to 2.00 is present in the temperature range of 50 to 80° C.; and (3) the loss tangent (tan δ) is 1.00 or more in a temperature range of 120 to 160° C.
18 Citations
10 Claims
-
1. A non-magnetic toner, comprising:
-
toner particles each containing at least a binder resin, a colorant, and a wax component; and
an inorganic fine powder, wherein the toner particles have a core/shell structure;
a polar resin is present in the shell;
the shell has a Tg of 80°
-120°
C. or a peak molecular weight from 8,000 to 250,000;
the core has a lower Tg or a lower peak molecular weight than the shell; and(1) when a temperature in a temperature range of 50 to 80°
C. at which a loss tangent (tan) as a ratio of a loss elastic modulus (G″
) of the toner to a storage elastic modulus (G′
) of the toner shows a maximum is represented by T1, a storage elastic modulus of the toner at the temperature T1 (G′
(T1)) (dN/m2) satisfies a relationship of 5.00×
107≦
G′
(T1)≧
1.00×
109;(2) a continuous temperature range with a width of 15°
C. or more in which the loss tangent (tanδ
) as a ratio of the loss elastic modulus (G″
) of the toner to the storage elastic modulus (G′
) of the toner is 0.80 to 2.00 is present in the temperature range of 50 to 80°
C.; and(3) the loss tangent (tanδ
) as a ratio of the loss elastic modulus (G″
) of the toner to the storage elastic modulus (G′
) of the toner is always 1.00 or more in a temperature range of 120 to 160°
C. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
Specification
-
- Resources
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Current AssigneeCanon Kabushiki Kaisha (Canon Inc.)
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Original AssigneeCanon Kabushiki Kaisha (Canon Inc.)
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InventorsInaba, Koji, Katsuta, Yasushi, Yoshizaki, Kazumi
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Primary Examiner(s)RoDee; Christopher
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Application NumberUS12/268,767Publication NumberTime in Patent Office595 DaysField of Search430/111.4, 430/109.3, 430/123.53, 430/110.2US Class Current430/110.2CPC Class CodesG03G 9/0806 whereby chemical synthesis ...G03G 9/0815 Post-treatmentG03G 9/0819 characterised by the dimens...G03G 9/0827 characterised by their shap...G03G 9/08791 characterised by the presen...G03G 9/08795 characterised by their chem...G03G 9/08797 characterised by their phys...G03G 9/09357 Macromolecular compoundsG03G 9/09385 Inorganic compoundsG03G 9/09392 Preparation thereofG03G 9/09708 Inorganic compoundsG03G 9/09733 Organic compounds G03G9/087...
