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公开(公告)号：US20210302854A1
公开(公告)日：2021-09-30
申请号：US17210974
申请日：2021-03-24
发明人： Shin Kitamura , Nobuyoshi Sugahara , Daisuke Tsujimoto , Kazunari Ooyama , Yuu Nishimura , Kazuki Murata , Toru Takahashi , Ryo Nakajima , Hitoshi Sano , Koh lshigami , Takaho Shibata
IPC分类号： G03G9/087 , C08G63/183 , C08F212/08 , C08G63/16
摘要： A toner comprising a toner particle containing a binder resin containing at least 50 mass % of a polyester resin, wherein the polyester resin contains a polyester resin A having a silicone segment, and in XPS analysis, when X is a ratio of the number of silicon atoms attributable to silicone segments relative to a total number of measured atoms, X1 is a value of the X on the toner particle surface, X2 is a value of the X at a depth of 30 nm from the surface, Z is a ratio of the number of carbon atoms attributable to ester bonds relative to a total number of measured atoms, Z1 is a value of the Z on the toner particle surface and Z2 is a value of the Z at a depth of 30 nm from the toner particle surface, X1, Z1, X2 and Z2 satisfy a specific relationship.
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公开(公告)号：US20210223710A1
公开(公告)日：2021-07-22
申请号：US17223070
申请日：2021-04-06
发明人： Toru Takahashi , Nobuyoshi Sugahara , Hitoshi Sano , Kazunari Ooyama , Yuu Nishimura , Kohji Takenaka , Koh Ishigami
IPC分类号： G03G9/087
摘要： A toner including a toner particle comprising a binder resin and a crystalline polyester, wherein the binder resin contains a polyester having a structure represented by the following formula (1): in formula (1), Rs each independently represent hydrogen, a methyl group, or a phenyl group; A represents a polyester segment; B represents a polyester segment or any functional group selected from the group consisting of —R1OH, —R1COOH, and —R1NH2 wherein R1 represents a single bond or a C1-4 alkylene group; and the average repeat number n is 10 to 80.
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公开(公告)号：US20210302853A1
公开(公告)日：2021-09-30
申请号：US17210961
申请日：2021-03-24
发明人： Kazuki Murata , Koh Ishigami , Shin Kitamura , Nobuyoshi Sugahara , Takaho Shibata , Toru Takahashi , Kazunari Ooyama , Yuu Nishimura , Daisuke Tsujimoto , Ryo Nakajima , Hitoshi Sano
IPC分类号： G03G9/087
摘要： A toner comprising a toner particle containing a binder resin and a polymer A, wherein the binder resin contains a polyester resin having a specific structure, the polymer A has a first monomer unit derived from a specific (meth)acrylic acid ester and a second monomer unit different from the first monomer unit, a content ratio of the first monomer unit in the polymer A is 5.0 mol % to 60.0 mol % while a content ratio of the second monomer unit in the polymer A is 20.0 mol % to 95.0 mol %, and the SP value of the first monomer unit, the SP value of the second monomer unit, and the SP value of a silicone segment contained in the specific structure satisfy a specific relationship.
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公开(公告)号：US11698594B2
公开(公告)日：2023-07-11
申请号：US17223070
申请日：2021-04-06
发明人： Toru Takahashi , Nobuyoshi Sugahara , Hitoshi Sano , Kazunari Ooyama , Yuu Nishimura , Kohji Takenaka , Koh Ishigami
IPC分类号： G03G9/087
CPC分类号： G03G9/08755 , G03G9/08773
摘要： A toner including a toner particle comprising a binder resin and a crystalline polyester, wherein the binder resin contains a polyester having a structure represented by the following formula (1):
in formula (1), Rs each independently represent hydrogen, a methyl group, or a phenyl group;
A represents a polyester segment;
B represents a polyester segment or any functional group selected from the group consisting of —R1OH, —R1COOH,
and —R1NH2 wherein R1 represents a single bond or a C1-4 alkylene group; and
the average repeat number n is 10 to 80.-
公开(公告)号：US12099326B2
公开(公告)日：2024-09-24
申请号：US17210974
申请日：2021-03-24
发明人： Shin Kitamura , Nobuyoshi Sugahara , Daisuke Tsujimoto , Kazunari Ooyama , Yuu Nishimura , Kazuki Murata , Toru Takahashi , Ryo Nakajima , Hitoshi Sano , Koh Ishigami , Takaho Shibata
IPC分类号： G03G9/087 , C08F212/08 , C08G63/16 , C08G63/183
CPC分类号： G03G9/08773 , C08F212/08 , C08G63/16 , C08G63/183 , G03G9/08788
摘要： A toner comprising a toner particle containing a binder resin containing at least 50 mass % of a polyester resin, wherein the polyester resin contains a polyester resin A having a silicone segment, and in XPS analysis, when X is a ratio of the number of silicon atoms attributable to silicone segments relative to a total number of measured atoms, X1 is a value of the X on the toner particle surface, X2 is a value of the X at a depth of 30 nm from the surface, Z is a ratio of the number of carbon atoms attributable to ester bonds relative to a total number of measured atoms, Z1 is a value of the Z on the toner particle surface and Z2 is a value of the Z at a depth of 30 nm from the toner particle surface, X1, Z1, X2 and Z2 satisfy a specific relationship.
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公开(公告)号：US20240280920A1
公开(公告)日：2024-08-22
申请号：US18617257
申请日：2024-03-26
发明人： Kazunari Ooyama , Yuu Nishimura , Nobuyoshi Sugahara , Hitoshi Sano , Toru Takahashi , Kazuki Murata , Daisuke Tsujimoto , Koh Ishigami , Shin Kitamura , Takaho Shibata , Ryo Nakajima
CPC分类号： G03G9/09708 , G03G9/08755 , G03G9/09725
摘要： A toner includes toner particles containing a binder resin, a colorant, and inorganic fine particles, in which in a depth profile of an element distribution in a depth region from the outermost surface of a particle to a depth of 500 nm the depth profile being obtained by an element analysis performed by X-ray photoelectron spectroscopy using the toner as a sample, two or more minimum points of a concentration of a carbon element in the depth region exist, a concentration of an inorganic element becomes a maximum value at a depth position corresponding to each of the minimum points, and the inorganic element is an element derived from the inorganic fine particle.
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公开(公告)号：US10338486B2
公开(公告)日：2019-07-02
申请号：US16120563
申请日：2018-09-04
发明人： Yukihiro Abe , Jun Ohira , Kazunari Ooyama , Takanori Ueno , Hironori Owaki , Yasuo Kojima
摘要： An average value of a hydrogen content ratio of a surface layer made of hydrogenated amorphous carbon is set to be 0.40 or less and a maximum value of an sp2 bonding ratio in an outermost surface region of the surface layer made of the hydrogenated amorphous carbon is set to be 0.50 or less.
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公开(公告)号：US20190072866A1
公开(公告)日：2019-03-07
申请号：US16120563
申请日：2018-09-04
发明人： Yukihiro Abe , Jun Ohira , Kazunari Ooyama , Takanori Ueno , Hironori Owaki , Yasuo Kojima
CPC分类号： G03G5/14704 , G03G5/082 , G03G5/08214 , G03G5/08278 , G03G5/08285 , G03G5/144 , G03G15/75
摘要： An average value of a hydrogen content ratio of a surface layer made of hydrogenated amorphous carbon is set to be 0.40 or less and a maximum value of an sp2 bonding ratio in an outermost surface region of the surface layer made of the hydrogenated amorphous carbon is set to be 0.50 or less.
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9.发明申请公开(公告)号：US20190072865A1
公开(公告)日：2019-03-07
申请号：US16114866
申请日：2018-08-28
发明人： Jun Ohira , Hironori Owaki , Yukihiro Abe , Yasuo Kojima , Kazunari Ooyama , Takanori Ueno
摘要： The present invention provides an electrophotographic photosensitive member which has a substrate, a photoconductive layer and a surface layer formed from hydrogenated amorphous silicon carbide in this order. The average value of the carbon content (C/(C+Si)) of the surface layer formed from the hydrogenated amorphous silicon carbide is set at 0.90 or more and less than 1.00, and the average value of the hydrogen content (H/(H+C+Si)) is set at 0.40 or less; and when the average value of the ratios of the sum of a Si—O bond and an O—Si—O bond in the outermost surface region that constitutes a range within a depth of 5 nm or less from the outermost surface of the surface layer is represented by a, and an average value of the silicon content (Si/(C+Si)) is represented by b, 0.015≤a*b≤0.090 holds.
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