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公开(公告)号：US12124212B2
公开(公告)日：2024-10-22
申请号：US17329740
申请日：2021-05-25
Applicant: CANON KABUSHIKI KAISHA
Inventor： Shintaro Kawaguchi , Masatake Tanaka , Tatsuya Saeki , Masamichi Sato
IPC: G03G9/093 , C08G63/183 , G03G9/08
CPC classification number: G03G9/09328 , C08G63/183 , G03G9/0819 , G03G9/09335 , G03G9/09342 , G03G9/09371
Abstract: A toner comprising a toner particle that comprises a core particle comprising a binder resin and a surface layer comprising inorganic fine particles and an organosilicon polymer, wherein the organosilicon polymer has T3 structure represented by R—Si(O1/2)3, in 29Si-NMR measurement of THF insoluble-matter of the toner particle, a proportion of a peak area assigned to the T3 structure relative to a total peak area for the organosilicon polymer is at least 5.0%, and in observation of a cross section of the toner particle using TEM, the toner has a prescribed surface layer thickness, a prescribed number of inorganic fine particles in contact with the core particle in the surface layer, and a prescribed number of inorganic fine particles present in the core particle and not in contact with the surface layer.
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公开(公告)号：US20210223731A1
公开(公告)日：2021-07-22
申请号：US17145896
申请日：2021-01-11
Applicant: CANON KABUSHIKI KAISHA
Inventor： Ai Suzuki , Kazuhiro Funatani , Kensuke Umeda , Shinsuke Kobayashi , Masamichi Sato , Masatake Tanaka
Abstract: An image forming method comprising a fixing step of fixing a toner image to a recording material while nipping and conveying the recording material, on which the toner image has been formed, by a fixing nip portion, wherein the toner comprises a toner particle comprising a toner base particle and an organosilicon polymer on a surface thereof, the organosilicon polymer has a structure represented by R—SiO3/2, where R is an C1 to C6 alkyl group or a phenyl group, the organosilicon polymer has convex portions formed on an outer surface thereof, and the convex portions satisfy specific relationships, and a contact pressure σ (MPa) of the pressure member and the fixing film and a storage elastic modulus G (MPa) of the toner at a temperature of a surface of the fixing film when the recording material is nipped and conveyed by the fixing nip portion satisfy specific relationships.
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公开(公告)号：US20210003932A1
公开(公告)日：2021-01-07
申请号：US16911929
申请日：2020-06-25
Applicant: CANON KABUSHIKI KAISHA
Inventor： Shohei Tsuda , Tsuneyoshi Tominaga , Masatake Tanaka , Taiji Katsura , Masamichi Sato
IPC: G03G9/08
Abstract: A toner including a toner particle including a binder resin, wherein fine particles A and B are present on a surface of the toner particle; the fine particles A are a fatty acid metal salt; the fine particles B have a specific volume resistivity; an average theoretical surface area of the toner particle, an amount of the fine particles A, and a coverage ratio of the toner particle surface by the fine particles A satisfy a specific relationship; the amount of the fine particles B is in a specific range; and a proportion F of an area occupied by a part of the fine particles B embedded in a surface vicinity region of the toner in a total area occupied by the fine particles B present in a cross section of one particle of the toner is 50% by area or more.
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公开(公告)号：US20200209774A1
公开(公告)日：2020-07-02
申请号：US16728101
申请日：2019-12-27
Applicant: CANON KABUSHIKI KAISHA
Inventor： Taiji Katsura , Masamichi Sato , Shohei Kototani , Kentaro Yamawaki , Tsuneyoshi Tominaga , Masatake Tanaka
Abstract: Provided is a toner including a toner particle and an external additive, wherein the external additive includes a composite particle including a hydrotalcite particle covered on the surface with an organosilicon polymer fine particle, a coverage ratio of the hydrotalcite particle surface by the organosilicon polymer fine particle is from 1% to 50%, and given A (nm) as the number-average particle diameter of the primary particles of the organosilicon polymer fine particle and B (nm) as the number-average particle diameter of the primary particles of the hydrotalcite particle, the toner satisfies the following formula (I) and formula (II): A
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公开(公告)号：US20170052465A1
公开(公告)日：2017-02-23
申请号：US15234497
申请日：2016-08-11
Applicant: CANON KABUSHIKI KAISHA
Inventor： Tsutomu Shimano , Yoshihiro Nakagawa , Masatake Tanaka , Naoya Isono , Yu Yoshida
CPC classification number: G03G9/08711 , G03G9/0806 , G03G9/09328 , G03G9/09364 , G03G9/09371 , G03G9/09392
Abstract: The toner comprising a toner particle having a core-shell structure that contains a core containing an amorphous resin A and a crystalline resin and a shell containing an amorphous resin B, wherein the amorphous resin A contains a styrene-acrylic resin, the content of the styrene-acrylic resin is at least 50% by mass based on the total mass of the amorphous resin A, a degree of compatibility A between the amorphous resin A and the crystalline resin is at least 50% and not more than 100%, and a degree of compatibility B between the amorphous resin B and the crystalline resin is at least 0% and not more than 40%.
Abstract translation: 该调色剂包含具有核 - 壳结构的调色剂颗粒，该核 - 壳结构含有含有无定形树脂A的核和结晶树脂和含有无定形树脂B的壳，其中无定形树脂A含有苯乙烯 - 丙烯酸树脂， 苯乙烯 - 丙烯酸树脂相对于无定形树脂A的总质量为至少50质量％，无定形树脂A和结晶性树脂之间的相容度A为至少50％以上且100％以下， 无定形树脂B和结晶性树脂之间的相容度B为至少0％且不大于40％。
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Patent Agency Ranking
公开(公告)号：US20160349640A1
公开(公告)日：2016-12-01
申请号：US15154802
申请日：2016-05-13
Applicant: CANON KABUSHIKI KAISHA
Inventor： Masatake Tanaka , Yoshihiro Nakagawa , Naoya Isono , Harumi Takada , Yuichi Yajima , Dai Nozaki
IPC: G03G9/087
CPC classification number: G03G9/08728
Abstract: A toner having a toner particle including a binder resin, wherein the binder resin includes a styrene acrylic resin and a vinyl-modified crystalline polyester resin, the vinyl-modified crystalline polyester resin has a crystalline polyester segment having structures of following i) or a structure of following ii), i) at least two structures selected from the group consisting of a structure derived from an aliphatic dicarboxylic acid, a structure derived from an aliphatic diol and a structure derived from an aliphatic hydroxycarboxylic acid; ii) a structure derived from an aliphatic hydroxycarboxylic acid; and the vinyl-modified crystalline polyester resin has a specific modification rate.
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公开(公告)号：US09377705B2
公开(公告)日：2016-06-28
申请号：US14555536
申请日：2014-11-26
Applicant: CANON KABUSHIKI KAISHA
Inventor： Tsutomu Shimano , Masatake Tanaka , Naoya Isono , Shintaro Noji , Yu Yoshida
IPC: G03G9/087
CPC classification number: G03G9/08711 , G03G9/08755 , G03G9/08786 , G03G9/08788 , G03G9/08795 , G03G9/08797
Abstract: A toner containing a toner particle containing a binder resin, wherein the binder resin contains a styrene-acrylic resin and a crystalline resin, and the crystalline resin is a block polymer or a graft polymer in which the mass ratio between the crystalline segment and an amorphous segment is 30:70 to 90:10, and wherein, in the total heat flow measured for the binder resin by a temperature-modulated differential scanning calorimeter, the peak temperature of an endothermic peak is from 55.0° C. to 90.0° C., and the percentage of the endothermic quantity of the endothermic peak in the reversing heat flow with respect to the endothermic quantity of the endothermic peak in the total heat flow is from 0.0% to 35.0%.
Abstract translation: 含有含有粘合剂树脂的调色剂颗粒的调色剂，其中粘合剂树脂含有苯乙烯 - 丙烯酸树脂和结晶树脂，结晶性树脂是嵌段聚合物或接枝聚合物，其中结晶链段和非晶态 片段为30:70〜90:10，其中，在通过温度调制差示扫描量热计测定的粘合剂树脂的总热流中，吸热峰的峰值温度为55.0℃〜90.0℃。 ，相对于总热流中的吸热峰的吸热量，反转热流中的吸热峰的吸热量的百分比为0.0％〜35.0％。
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公开(公告)号：US20150261110A1
公开(公告)日：2015-09-17
申请号：US14639412
申请日：2015-03-05
Applicant: CANON KABUSHIKI KAISHA
Inventor： Yoshihiro Nakagawa , Masatake Tanaka , Naoya Isono , Tsutomu Shimano , Shintaro Noji , Yu Yoshida
IPC: G03G9/08
CPC classification number: G03G9/0804 , G03G9/0821 , G03G9/08724 , G03G9/08755 , G03G9/08788 , G03G9/08795 , G03G9/08797
Abstract: A toner particle production method has an annealing step that is performed after the preparation of a resin solution by the dissolution or dispersion, in an organic solvent, of a binder resin having a polyester resin as its major component and a block polymer having a polyester segment and a vinyl polymer segment, and the preparation of a resin particle dispersion in which resin particles are dispersed by a dissolution suspension method, wherein, in this annealing step, the temperature of the obtained resin particle dispersion is held for at least 60 minutes in the temperature range from TgA-15 (° C.) to TmA (° C.), and under the conditions of a temperature variation range of not more than 20° C. and a temperature variation rate of not more than 0.35° C./minute.
Abstract translation: 调色剂颗粒生产方法具有退火步骤，其在通过溶解或分散在具有聚酯树脂作为其主要成分的粘合剂树脂的有机溶剂中制备树脂溶液和具有聚酯链段的嵌段聚合物 和乙烯基聚合物链段，以及通过溶解悬浮法制备树脂颗粒分散体，其中在该退火步骤中，将得到的树脂颗粒分散体的温度保持在至少60分钟 温度范围为TgA-15（℃）至TmA（℃），温度变化范围为20℃以下，温度变化率为0.35℃以下的条件下， 分钟。
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公开(公告)号：US20150153668A1
公开(公告)日：2015-06-04
申请号：US14554832
申请日：2014-11-26
Applicant: CANON KABUSHIKI KAISHA
Inventor： Masatake Tanaka , Yoshihiro Nakagawa , Naoya Isono , Tsutomu Shimano , Shintaro Noji , Yu Yoshida
IPC: G03G9/087
CPC classification number: G03G9/08711 , G03G9/0804 , G03G9/08755 , G03G9/08788 , G03G9/08795 , G03G9/08797
Abstract: A toner that comprises a toner particle that contains a binder resin that contains a styrene-acrylic resin and a block polymer, wherein the block polymer has a polyester segment and a vinyl polymer segment; the polyester segment is obtained by condensation polymerization of: a monomer (a) selected from a group consisting of a prescribed monomer group A; and a monomer (b) selected from a group consisting of a prescribed monomer group B, and the content in the polyester segment of the substructure originating with the monomer (b) as calculated from the following formula is from at least 1.0 mol % to not more than 30.0 mol %: {monomer (b) [mol]/(monomer (a) [mol]+monomer (b) [mol])}×100.
Abstract translation: 一种调色剂，其包含含有苯乙烯 - 丙烯酸树脂和嵌段聚合物的粘合剂树脂的调色剂颗粒，其中所述嵌段聚合物具有聚酯链段和乙烯基聚合物链段; 聚酯链段是通过以下方式的缩聚获得的：选自规定的单体组A的单体（a） 和选自规定的单体组B的单体（b），由下式计算的源自单体（b）的亚结构的聚酯链段的含量为至少1.0摩尔％以上 大于30.0mol％：{单体（b）[mol] /（单体（a）[mol] +单体（b）[mol]）}×100。
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公开(公告)号：US20140356779A1
公开(公告)日：2014-12-04
申请号：US14374036
申请日：2013-02-22
Applicant: CANON KABUSHIKI KAISHA
Inventor： Waka Hasegawa , Yasuaki Murai , Yuki Hasegawa , Takayuki Toyoda , Masatake Tanaka , Masashi Kawamura , Masashi Hirose
CPC classification number: G03G9/08 , C09B29/337 , C09B67/0051 , C09B67/0055 , C09B68/41 , C09B69/106 , G03G9/0804 , G03G9/0806 , G03G9/087 , G03G9/08742 , G03G9/08768 , G03G9/08791 , G03G9/0904
Abstract: Provided is a black toner which has improved dispersibility of carbon black in a binding resin and has a high coloring power. Also provided is a black toner which suppresses fogging and has high transfer efficiency. The toner includes a toner particle containing a binding resin, a compound in which a polymer moiety is bound to an azo skeleton, and carbon black as a coloring agent.
Abstract translation: 本发明提供一种炭黑在粘合树脂中的分散性提高且着色力高的黑色调色剂。 还提供了抑制雾化并具有高转印效率的黑色调色剂。 调色剂包括含有粘合树脂的调色剂颗粒，聚合物部分与偶氮骨架结合的化合物和作为着色剂的炭黑。
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