Canon Kabushiki Kaisha

Nec Corporation

Ps4 Luxco S.a.r.l.

Masashi Kawamura

Takayuki Toyoda

Yasuaki Murai

Masashi Hirose

Waka Hasegawa

Yuki Hasegawa

Masatake Tanaka

Chiaki Nishiura

Masanori Seki

Ayano Mashida

Taku Shimoda

Kenji Ookubo

Takeshi Miyazaki

Yu Yoshida

Taiki Watanabe

Yuki Tsujii

Yuhei Terui

Daniel Julier

Igor Basargin

Kei Inoue

Hidekazu Fumita

Takashi Kenmoku

Tsuneyoshi Tominaga

Akane Masumoto

Yasuhiro Hashimoto

Yutaka Tani

Shiro Kuroki

Naotaka Ikeda

Emi Watanabe

Kosuke Mukumoto

Takashi Matsui

Yoji Nishio

Kenji Aoki

Takeshi Sekiguchi

Taichi Shintou

Kunihiko Nakamura

Tsutomu Shimano

Susumu Hatano

Kenichi Nakayama

Mariko Yamashita

Shinsuke Mochizuki

Haruko Kubo

Masahiro Suenaga

Shohei Shibahara

Nobuhisa Abe

Haruki Nagahashi

Tadaaki Yoshimura

Yuna Yamamoto

Takao Hirayama

Kenji Ookuba

Kousuke Mukumoto

A toner comprises a toner particle comprising a resin A and a resin B, wherein the resin A has a structure represented by a predetermined general formula, and the resin B has a monomer unit represented by a predetermined general formula, and a toner manufacturing method comprises a step of dispersing a toner base particle comprising the resin B in an aqueous medium to obtain a toner slurry, and a step of adding a radical polymerization initiator and a monomer composition comprising a monomer represented by a predetermined general formula to the resulting toner slurry to form the resin A on a surface of the toner base particle.

Toner and method for manufacturing toner

A toner comprising a toner particle, wherein the toner particle comprises a binder resin, a resin A, and a resin B, the resin A comprises a substituted or unsubstituted silyl group in a molecule, a substituent of the substituted silyl group is at least one selected from the group consisting of an alkyl group having 1 or more carbon atoms, an alkoxy group having 1 or more carbon atoms, a hydroxy group, a halogen atom, and an aryl group having 6 or more carbon atoms, and the resin B comprises an azo group in a molecule.

Toner

A toner comprising a toner particle comprising a resin A, and an external additive A, wherein the resin A is a resin represented by formula (1) below, the resin A is present at the surface of the toner particle, the external additive A is a fine particle containing silicon, the average value of the shape factor SF-1 of the external additive A is from 105 to 120, the average value of the shape factor SF-2 of the external additive A is from 100 to 130.

A production method for obtaining a compound having an amide bond and also having an alkoxysilyl group by a reaction of a compound including a carboxy group with a compound having an amino group and an alkoxysilyl group, the production method comprising:

Method for producing compound having amide bond and also having alkoxysilyl group

Toner comprising a toner particle, the toner particle includes a toner core particle and an organosilicon polymer covering the toner core particle surface, the organosilicon polymer has a structure represented by R&#x2014;SiO(Reach independently represents an alkyl group having 1 to 6 carbon atoms or a phenyl group), the toner core particle includes a resin A having a substituted or unsubstituted silyl group in a molecule thereof, a substituent of the substituted silyl group is at least one selected from the group consisting of an alkyl group having 1 or more carbon atoms, an alkoxy group having 1 or more carbon atoms, a hydroxy group, a halogen atom, and an aryl group having 6 or more carbon atoms, a content of silicon atoms in the resin A is 0.02 to 10.00% by mass, and a content of silicon atoms in the organosilicon polymer is 30 to 50% by mass.

A toner comprising a toner particle that contains a binder resin, a resin represented by formula (1), and wax, wherein the wax contains an ester compound that exhibits a compatibility at 100&#xb0; C. of at least 5.0 mass parts per 100.0 mass parts of the binder resin: wherein in formula (1), Prepresents a macromolecular segment; Lrepresents a single bond or a divalent linking group; Rto Reach independently represent a hydrogen atom, halogen atom, alkyl group, alkoxy group, hydroxy group, or aryl group; m represents a positive integer; and when m is equal to or greater than 2, a plurality of L's, a plurality of R's, a plurality of R's, and a plurality of R's may be the same as or different from each other. 

A compound that improves the dispersibility of pigments in non-water-soluble solvents is provided, the compound having a pigment dispersant, a pigment composition, a pigment dispersion, and a toner wherein the compound has a polymer and a monoazo compound having a certain structure binding to each other.

Compound having azo skeleton, pigment dispersant, pigment composition, pigment dispersion, and toner

A toner having a toner particle containing a binder resin and a crystalline material, wherein when 'a' is an endothermic quantity deriving from the crystalline material in a DSC of the toner and 'b' is an endothermic quantity deriving from the crystalline material in a DSC of the toner that has been held for 10 hours in an environment with a temperature of 55&#xb0; C. and a humidity of 8% RH, the &#x201c;a&#x201d; and &#x201c;b&#x201d; satisfy a relationship a/b&#x2265;0.85; in a dynamic viscoelastic measurement of a non-melt-molded pellet of the toner, the toner has a temperature range A for which G&#x2033;&#x2264;1&#xd7;10Pa and tan &#x3b4;&#x3c;1 are satisfied; and in a dynamic viscoelastic measurement of a melt-molded pellet of the toner, the toner has a temperature range B for which tan &#x3b4;&#x3e;1 is satisfied within the temperature range A.

The present invention provides a compound capable of improving the dispersibility of color pigments in a water-insoluble solvent; and a pigment-dispersing agent. The present invention also provides a pigment composition, a pigment dispersion, and a toner, which have satisfactory tinting strength. The present invention provides the compound containing a polymer having a monomer unit having a specific chemical structure, the compound having a moiety also having a specific structure.

Compound having azo skeleton structure, pigment-dispersing agent, pigment composition, pigment dispersion, and toner

A toner having a toner particle which contains a binder resin, a fatty acid metal salt, and a resin having an ionic functional group, in which the fatty acid metal salt is a fatty acid metal salt of a polyvalent metal with valency of 2 or higher and a fatty acid with carbon atom number of at least 8 and not more than 28, and the acid dissociation constant pKa of the resin having an ionic functional group is at least 6.0 and not more than 9.0.

Toner and process for producing toner

Provided is a toner including toner particles each containing: a binder resin, a crystalline polyester, and a colorant, in which: the colorant includes a compound represented by the following formula (1); and the binder resin and the crystalline polyester satisfy the following formula (2): in the formula (1), R, R, and Reach independently represent a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, and Ar represents an aryl group.&#x394;1&#x2212;2|&#x2266;0.43&#x2003;&#x2003;Formula (2).

The present invention provides a compound and a pigment dispersant, each of which improves the dispersibility of various types of pigments in a non-aqueous solvent and also provides a pigment composition, a pigment dispersion, and a toner, each of which has a preferable coloring power. The compound includes a polymer which has a monomer unit having a specific structure and also includes a specific partial structure.

Compound having azo skeleton structure, pigment dispersant, pigment composition, pigment dispersion, and toner

A toner having a toner particle that contains a binder resin, a pigment, a pigment dispersant, and a crystalline polyester, wherein the pigment dispersant has a specific pigment adsorption segment and a polymer moiety and a hydrophobic parameter HP1 for the pigment dispersant and a hydrophobic parameter HP2 for the crystalline polyester satisfy the formula &#x2212;0.28&#x2266;(HP1&#x2212;HP2)&#x2266;0.15.

Display screen or portion thereof with animated graphical user interface

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Yokohama, Japan

Masashi Kawamura