公开(公告)号：US20240392064A1

公开(公告)日：2024-11-28

申请号：US18669614

申请日：2024-05-21

Applicant: Shinya Nakayama ,  Junichi Watanabe ,  Akinori Saitoh ,  Masahiro Yukikawa ,  akio Takei

Inventor： Shinya Nakayama ,  Junichi Watanabe ,  Akinori Saitoh ,  Masahiro Yukikawa ,  akio Takei

IPC: C08G63/181 ,  C08J3/07 ,  C08L67/02 ,  G03G9/093

Abstract: A polyester resin emulsion contains resin particles(S), each containing a polyester resin (A) obtained by polycondensation of an alcohol component and a carboxylic acid component, and an aqueous medium in which the resin particles(S) are dispersed, wherein the alcohol component contains tri- or tetra-alcohol having a backbone of a linear or branched saturated fatty acid with a carbon number of 4 to 6, and the ratio (OHV/AV) of a hydroxyl value (OHV) of the polyester resin (A) to an acid value (AV) of the polyester resin (A) is from 0.20 to 0.60.

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.

公开(公告)号：US12019380B2

公开(公告)日：2024-06-25

申请号：US18156951

申请日：2023-01-19

Applicant: CANON KABUSHIKI KAISHA

Inventor： Takanori Mitani ,  Takao Kume ,  Satoshi Nishida ,  Isamu Takeda ,  Kohei Okayasu

IPC: G03G15/08 ,  G03G9/093 ,  G03G15/01 ,  G03G15/16

CPC classification number: G03G15/0808 ,  G03G9/09328 ,  G03G15/0173 ,  G03G15/161 ,  G03G2215/00177 ,  G03G2215/00679

Abstract: An image-forming apparatus includes first and second photosensitive drums, first and second image-forming portion including first and second development rollers configured to bear developers composed of first and second toner particles and organosilicon protrusions formed on surfaces of the first and second toner particles, an intermediate transfer member to which a developer image is to be transferred in first and second contact portions in contact with the first and second photosensitive drums, and a transfer member configured to transfer the developer image to a recording material in a transfer portion. The first contact portion is formed downstream of the transfer portion and upstream of the second contact portion in a movement direction of the surface of the intermediate transfer member. A protrusion formed on the second developer has a lower height than a protrusion formed on the first developer.

公开(公告)号：US20240201611A1

公开(公告)日：2024-06-20

申请号：US18082637

申请日：2022-12-16

Applicant: Xerox Corporation

Inventor： Michael F. Zona ,  Elizabeth K. Priebe ,  John Lawrence Pawlak

IPC: G03G9/097 ,  G03G9/08 ,  G03G9/087 ,  G03G9/09 ,  G03G9/093

CPC classification number: G03G9/09716 ,  G03G9/0808 ,  G03G9/0819 ,  G03G9/0827 ,  G03G9/08755 ,  G03G9/0904 ,  G03G9/09328 ,  G03G9/09371 ,  G03G9/09392 ,  G03G9/09725

Abstract: A toner including a parent toner particle comprising at least one resin, an optional colorant, an optional wax; and a surface additive formulation disposed on a surface of the parent toner particle; wherein the surface additive formulation comprises a silicone fluid treated aluminum oxide.

公开(公告)号：US20240192621A1

公开(公告)日：2024-06-13

申请号：US18551358

申请日：2022-05-18

Applicant: LOTTE FINE CHEMICAL CO., LTD.

Inventor： Dae Woong Choi ,  Ji Soo Lee

IPC: G03G9/093 ,  G03G9/097

CPC classification number: G03G9/09385 ,  G03G9/09307 ,  G03G9/09708

Abstract: A toner external additive composition of the present invention comprises, as a core component, tin oxide, to be usable as an alternative material for conventional titanium dioxide (TiO2), and thus can respond to future regulations on titanium dioxide and environment. In addition, the toner external additive composition and a toner composition comprising same comprise, as a shell component, a silane-based compound and aluminum hydroxide to reduce triboelectric charge so that a ghost phenomenon is alleviated and increase image density so that print quality is improved. Particularly, if aluminum hydroxide is used in a specific amount range, a print quality improvement effect can be further improved.

公开(公告)号：US11952479B2

公开(公告)日：2024-04-09

申请号：US17820656

申请日：2022-08-18

Applicant: Xerox Corporation

Inventor： Chunliang Lu ,  Peter V Nguyen ,  Yu Qi

IPC: C08K5/00 ,  C08K5/1545 ,  C08K5/16 ,  G03G9/09 ,  G03G9/093

CPC classification number: C08K5/0041 ,  C08K5/1545 ,  C08K5/16 ,  G03G9/0914 ,  G03G9/09335 ,  G03G9/09371 ,  G03G9/09392

Abstract: Fluorescent orange latexes are provided which comprise water and fluorescent agent-incorporated resin particles, the particles comprising a resin, Solvent Red 49 as a red fluorescent agent, and Solvent Yellow 98 as a yellow fluorescent agent, wherein the fluorescent orange latex has a weight ratio of the Solvent Yellow 98 to the Solvent Red 49 in a range of from 20:1 to 0.5:1. Fluorescent orange toners and methods of making and using the fluorescent orange toners are also provided.

公开(公告)号：US20230384700A1

公开(公告)日：2023-11-30

申请号：US18154049

申请日：2023-01-13

Applicant: FUJIFILM Business Innovation Corp.

Inventor： Takahisa TATEKAWA ,  Yukiaki NAKAMURA ,  Kohei MANABE

IPC: G03G9/09 ,  G03G9/087 ,  G03G9/093 ,  G03G15/01 ,  C09K11/06

CPC classification number: G03G9/0926 ,  G03G9/0918 ,  G03G9/08782 ,  G03G9/0935 ,  G03G9/09307 ,  G03G15/0105 ,  C09K11/06 ,  C09K2211/10

Abstract: A fluorescent green toner contains toner particles containing a binder resin, a release agent, a fluorescent pigment having a hydrophilic group, and a pigment having a halogen atom.

公开(公告)号：US20230367236A1

公开(公告)日：2023-11-16

申请号：US18314218

申请日：2023-05-09

Applicant: Natsuko Matsushita ,  Yuka Mizoguchi ,  Junichi Watanabe ,  Kazuoki Fuwa

Inventor： Natsuko Matsushita ,  Yuka Mizoguchi ,  Junichi Watanabe ,  Kazuoki Fuwa

IPC: G03G9/093

CPC classification number: G03G9/09328 ,  G03G9/09371

Abstract: A resin particle contains a core containing a first binder resin containing an alcohol component and a shell containing a second binder resin containing at least one of polyethylene terephthalate and polybutylene terephthalate, wherein the first binder resin contains a plant-derived alcohol monomer accounting for 5 to 35 percent by mass of the entire of the alcohol component and the at least one of polyethylene terephthalate and polybutylene terephthalate accounts for 10 to 70 percent by mass of the entire of the second binder resin.

公开(公告)号：US20230324824A1

公开(公告)日：2023-10-12

申请号：US17697783

申请日：2022-03-17

Applicant: Xerox Corporation

Inventor： Genggeng Qi ,  Jordan A. Frank ,  Elizabeth K. Priebe ,  Chieh-Min Cheng ,  Michael F. Zona

IPC: G03G9/08 ,  G03G9/097 ,  G03G9/093 ,  G03G9/087

CPC classification number: G03G9/09758 ,  G03G9/081 ,  G03G9/08755 ,  G03G9/09328 ,  G03G9/09371 ,  G03G9/09725

Abstract: An emulsion aggregation toner including a toner particle comprising at least one resin; an optional colorant; an optional wax; and a charge control agent disposed on a surface of the toner particle; the charge control agent comprising a complex formed from a metal ion donor and at least one of a ligand selected from a member of the group consisting of a polyaromatic acid comprising humic acid, a pyranone based ligand, a furanone based ligand, or a combination thereof.

公开(公告)号：US11782356B2

公开(公告)日：2023-10-10

申请号：US17841049

申请日：2022-06-15

Applicant: CANON KABUSHIKI KAISHA

Inventor： Kazunari Hagiwara ,  Taichi Sato ,  Takahiro Kawamoto ,  Yasukazu Ikami ,  Shoko Funaki

IPC: G03G15/09 ,  G03G15/08 ,  G03G21/18 ,  G03G9/093

CPC classification number: G03G15/0812 ,  G03G21/1814 ,  G03G9/093

Abstract: A developer used in a developing apparatus equipped with a metal blade includes a toner base particle and external additives, the external additives including a silica particle with a particle diameter of 5 nm or more and 25 nm or less and an inorganic spacer particle with a particle diameter of 50 nm or more and 150 nm or less, and an area occupancy of the silica particle on a surface of the toner base particle is 40% or more.