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1.发明公开公开(公告)号：US20240310746A1
公开(公告)日：2024-09-19
申请号：US18605957
申请日：2024-03-15
Applicant: Daisuke INOUE , Keiji MAKABE , Tsukiko TAKAHASHI , Taishi YAMASHITA , Shuto SUNAGA
Inventor： Daisuke INOUE , Keiji MAKABE , Tsukiko TAKAHASHI , Taishi YAMASHITA , Shuto SUNAGA
CPC classification number: G03G9/08755 , G03G9/0819 , G03G9/08782 , G03G9/09 , G03G15/08
Abstract: Toner may comprise toner particles that comprise a binder resin; the toner particles have a volume average particle diameter from 4.0 μm to 6.0 μm, and the toner has a number content of coarse particle of 20 μm or more from 10 to 250 in 10 mg of the toner.
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公开(公告)号：US20240219854A1
公开(公告)日：2024-07-04
申请号：US18543153
申请日：2023-12-18
Applicant: CANON KABUSHIKI KAISHA
Inventor： MEGUMI SHINO , TAKESHI HASHIMOTO , GAKU SATO , HAYATO IDA
CPC classification number: G03G9/08728 , G03G9/081 , G03G9/0821 , G03G9/08782
Abstract: A toner comprises a toner particle that contains a binder resin having a crystalline resin and an amorphous resin, and a wax, wherein a matrix-domain structure made up of a matrix including the crystalline resin, and domains including the amorphous resin, is present in a cross-sectional observation of the toner, the crystalline resin has a specific monomer unit, in a differential curve, which is obtained through differentiation of a temperature-storage elastic modulus curve by temperature, with temperature being a horizontal axis and a common logarithm Log G′ of a storage elastic modulus G′ being a vertical axis as obtained in a viscoelasticity measurement of the toner, the differential curve has specific minimal values P1 and P2 within specific temperature ranges, and has storage elastic moduli G′ at the temperatures of the minimal values P1 and P2 lie in respective specific ranges.
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公开(公告)号：US20240019791A1
公开(公告)日：2024-01-18
申请号：US18350266
申请日：2023-07-11
Applicant: CANON KABUSHIKI KAISHA
Inventor： MAYUMI INOUE , TAKASHI KENMOKU , YOSHIAKI SHIOTARI , SHOHEI KOTOTANI , KOZUE URATANI
CPC classification number: G03G9/0821 , G03G9/08782 , G03G9/08711 , G03G9/09328 , G03G9/08728
Abstract: A toner comprising a toner particle, wherein the toner particle comprises a binder resin and wax, and where with respect to a slope X of a straight line obtained by performing a micro-compression test on the toner, obtaining a relationship of a deformation amount (μm) to a load (mN), calculating a percentage deformation (%), which is a ratio of the deformation amount to a particle diameter of the particle measured, plotting a load (mN)−percentage deformation (%) plot, and then using all the points plotted within the range in which the percentage deformation was 15% or less of the particle diameter of the particle for approximation by a least squares method, the slope X measured at 30° C. is denoted by X30 and the slope X measured at 45° C. is denoted by X45, the X30 is 25 to 300, and the X45 is 400 to 1000.
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公开(公告)号：US11809131B2
公开(公告)日：2023-11-07
申请号：US17189794
申请日：2021-03-02
Applicant: CANON KABUSHIKI KAISHA
Inventor： Kentaro Kamae , Takeshi Hashimoto , Takeshi Ohtsu , Hayato Ida
IPC: G03G9/087
CPC classification number: G03G9/08755 , G03G9/08711 , G03G9/08782 , G03G9/08786 , G03G9/08797
Abstract: A toner comprising a toner particle that contains a binder resin and a wax, wherein the binder resin contains an amorphous polyester resin, a polymer A, and a component B, a content of the amorphous polyester resin in the binder resin is at least 50.0 mass %, the polymer A has first monomer units represented by Formula (C) below and second monomer units, RZ3 represents a hydrogen atom or a methyl group, R represents a C18 to C36 alkyl group, a content ratio of the first monomer units in the polymer A is from 5.0 mol % to 60.0 mol %, an SP value of the second monomer units is at least 21.00, a content of the polymer A in the binder resin is from 0.10 mass % to 10.00 mass %, and SP values of the amorphous polyester resin, the polymer A, the component B and the wax satisfy specific relationships.
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公开(公告)号：US11774871B2
公开(公告)日：2023-10-03
申请号：US17217074
申请日：2021-03-30
Applicant: CANON KABUSHIKI KAISHA
Inventor： Yoshiaki Shiotari , Hirofumi Kyuushima , Shintaro Noji , Kazutaka Sasaki
CPC classification number: G03G9/0825 , G03G9/0806 , G03G9/0821 , G03G9/0827 , G03G9/08711 , G03G9/08755 , G03G9/08782
Abstract: A toner comprising a toner particle, wherein the toner particle comprises a binder resin, the binder resin comprises a resin A and a resin B, the toner particle comprises protrusions on a surface thereof, each of the protrusions comprises the resin B, a shape factor SF-2 of the toner as observed under SEM is 105 to 120, and when the toner is observed under the SEM, a surface unevenness index of the toner as calculated by formula (1) below is 0.010 to 0.050:
Surface unevenness index=(area of region surrounded by convex hull of toner−projected area of toner)/projected area of toner (1).-
Patent Agency Ranking
6.发明申请公开(公告)号：US20190243269A1
公开(公告)日：2019-08-08
申请号：US16106603
申请日：2018-08-21
Applicant: FUJI XEROX CO., LTD.
Inventor： Satomi HARA , Masaru TAKAHASHI , Yukiaki NAKAMURA , Sakiko TAKEUCHI
CPC classification number: G03G9/0926 , G03G9/0806 , G03G9/0819 , G03G9/0821 , G03G9/08782 , G03G9/0904
Abstract: A brilliant toner includes a first toner which contains a first toner particle containing a flake-shape brilliant pigment; and a second toner which contains a second toner particle containing a flake-shape brilliant pigment, and has a different color from that of the first toner, and an electrostatic charge image developing toner includes a first toner which contains a first toner particle; and a second toner which has a different color from that of the first toner, and contains the second toner particle, in which, based on a charge distribution of each of the first toner and the second toner obtained according to a charge spectrograph method, maximum peak positions of the first toner and the second toner are taken as P1 and P2, respectively, and full widths at half maximum of the first toner and the second toner are taken as W1 and W2, respectively, |P1-P2| is 3 mm or less, and |W1-W2| is 3 mm or less.
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公开(公告)号：US20190235402A1
公开(公告)日：2019-08-01
申请号：US16259104
申请日：2019-01-28
Applicant: CANON KABUSHIKI KAISHA
Inventor： Koki Inoue , Takeshi Tsujino , Yasuhiro Hashimoto , Junya Asaoka , Yuu Sasano , Kenta Katayama , Shota Amano
CPC classification number: G03G9/0821 , G03G9/0806 , G03G9/0819 , G03G9/083 , G03G9/08782 , G03G9/08797
Abstract: A toner has a toner particle including a binder resin, a colorant, and a wax, in which in a cross section of the toner particle observed under a scanning transmission electron microscope, a proportion of the number of toner particles having a void with a long diameter of 0.50 μm or less is 60 number % or more, and a proportion of the number of toner particles having a void in a region from an outline of the cross section of the toner particle inward to 1.00 μm in a total number of the toner particles having a void is 30 number % or less.
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公开(公告)号：US20190146365A1
公开(公告)日：2019-05-16
申请号：US16163156
申请日：2018-10-17
Applicant: KYOCERA Document Solutions Inc.
Inventor： Masaki OKITA
CPC classification number: G03G9/08797 , G03G9/081 , G03G9/08755 , G03G9/08782 , G03G9/08795
Abstract: A positively chargeable toner includes a plurality of toner particles. The toner particles each contain a crystalline polyester resin, a non-crystalline polyester resin, a carnauba wax, and a quaternary ammonium salt. The crystalline polyester resin has an SP value of at least 10.0 (cal/cm3)1/2 and no greater than 10.1 (cal/cm3)1/2. An amount of the crystalline polyester resin is at least 5 parts by mass and no greater than 19 parts by mass relative to 100 parts by mass of the toner particles. An amount of the carnauba wax is at least 21.0% by mass and no greater than 42.0% by mass relative to a total mass of the crystalline polyester resin, the quaternary ammonium salt, and the carnauba wax.
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公开(公告)号：US20190137901A1
公开(公告)日：2019-05-09
申请号：US16180480
申请日：2018-11-05
Applicant: CANON KABUSHIKI KAISHA
Inventor： Tsutomu Shimano , Yoshihiro Nakagawa , Reo Tagawa , Taku Shimoda
CPC classification number: G03G9/08782 , G03G9/0821 , G03G9/08711 , G03G9/08755 , G03G9/08795 , G03G9/08797
Abstract: Provided is a toner having: a toner particle including a binder resin and a wax A, wherein the binder resin includes at least 50% by mass of a styrene acrylic copolymer in the binder resin, the melting point of the wax A is from 60.0° C. to 100.0° C., the wax A is compatible at 100° C. in an amount of at least 15.0 parts by mass with 100 parts by mass of a styrene-butyl acrylate copolymer, in DSC of the toner, where a peak temperature of a maximum exothermic peak derived from the wax A when cooling from 150° C. to 0° C. is performed at 1.0° C./min is denoted by Tc(1), and a peak temperature of a maximum exothermic peak derived from the wax A when cooling from 150° C. to 0° C. is performed at 20.0° C./min is denoted by Tc(20), 0.0° C.≤Tc(1)-Tc(20)≤7.0° C. is satisfied.
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公开(公告)号：US20190094732A1
公开(公告)日：2019-03-28
申请号：US16128612
申请日：2018-09-12
Applicant: Konica Minolta, Inc.
Inventor： Kaori MATSUSHIMA , Tomoko MINE , Hitomi MOTANI
CPC classification number: G03G9/08755 , G03G9/08711 , G03G9/08782 , G03G9/0904 , G03G9/091 , G03G9/0918 , G03G9/09708 , G03G9/09716 , G03G9/09725 , G03G15/0121 , G03G15/08 , G03G15/09
Abstract: In an image forming method, a black toner and a color toner other than the black toner are used. The black toner and the color toner each include a binder resin including a polyester resin as a main component and a vinyl resin, a releasing agent, and an external additive. A content Vk % by mass of the vinyl resin relative to total mass of the binder resin included in the black toner, a content Vc % by mass of the vinyl resin relative to total mass of the binder resin included in the color toner, a content Wk % by mass of the releasing agent relative to the total mass of the binder resin included in the black toner, and a content Wc % by mass of the releasing agent relative to the total mass of the binder resin included in the color toner satisfy a specific relationship.
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