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US 9,383,668 B2Granted
Toner
AssigneeCanon Kabushiki Kaisha
InventorsShintaro Noji, Masatake Tanaka, Naoya Isono, Tsutomu Shimano, Yu Yoshida
Life of this patent
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Abstract
The present invention relates to a toner including a toner particle containing a binder resin, wherein the binder resin contains a block polymer and a styrene-acrylic resin, the block polymer has a vinyl polymer segment and a polyester segment, the polyester segment has a branch structure and the block polymer has a melting point of 50° C. to 95° C.
Claims10
A toner comprising a toner particle containing a binder resin, wherein
- the binder resin contains a block polymer and a styrene-acrylic resin;
- the block polymer has a vinyl polymer segment and a crystalline polyester segment;
- the polyester segment is a segment produced by condensation polymerization of the following (I), (II) and (III):
- (I) a dicarboxylic acid having carboxyl groups at both terminals of a linear alkane having 2 to 16 carbon atoms;
- (II) a diol having hydroxy groups at both terminals of a linear alkane having 2 to 16 carbon atoms;
- and
- (III) an alkane compound having 3 to 24 carbon atoms, or an alkyl ester, lactone or acid anhydride compound derived from the alkane compound;
- the alkane compound is at least one compound selected from the group consisting of the following (a) to (f):
- (a) a branch alkanedicarboxylic acid;
- (b) a branch alkanediol;
- (c) a branch alkane monohydroxy monocarboxylic acid;
- (d) a linear alkanedicarboxylic acid at least one of carboxyl groups of which is linked to a moiety other than a terminal;
- (e) a linear alkanediol at least one of hydroxy groups of which is linked to a moiety other than a terminal;
- and
- (f) a linear alkane monohydroxy monocarboxylic acid at least one of carboxyl group and hydroxy group of which is linked to a moiety other than a terminal;
- the block polymer has a melting point (Tm) of 50° C. to 95° C.;
- and
- the binder resin contains the block polymer at 2.0% by mass to 50.0% by mass.
15 more elements
Dependencies are inferred from the claim text.