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公开(公告)号：US20240241460A1
公开(公告)日：2024-07-18
申请号：US18392823
申请日：2023-12-21
Applicant: CANON KABUSHIKI KAISHA
Inventor： NAOYA ISONO , MARIKO YAMASHITA , KENJI AOKI , TATSUYA SAEKI , YUKI MASUDA , MEGUMI MORIYA
CPC classification number: G03G9/09775 , G03G9/08711 , G03G9/0904 , G03G9/091 , G03G9/092 , G03G9/09733
Abstract: Provided is such a toner that a pigment is dispersed in a toner particle containing a large amount of a crystalline resin, that is, a toner excellent in low-temperature fixability and coloring power, wherein the toner is a toner including a toner particle containing a binder resin, a pigment and a pigment dispersant, wherein the binder resin contains 20.0% by mass or more and 100.0% by mass or less of a crystalline resin, wherein the pigment dispersant is a polymer containing a specific structure that interacts with the pigment and a specific monomer unit that interacts with the crystalline resin.
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公开(公告)号：US20240231251A1
公开(公告)日：2024-07-11
申请号：US18392903
申请日：2023-12-21
Applicant: CANON KABUSHIKI KAISHA
Inventor： NAOYA ISONO , MARIKO YAMASHITA , KENJI AOKI , TATSUYA SAEKI , YUKI MASUDA , MEGUMI MORIYA
CPC classification number: G03G9/09775 , G03G9/08711 , G03G9/0904 , G03G9/091 , G03G9/092 , G03G9/09733
Abstract: Provided is such a toner that a pigment is dispersed in a toner particle containing a large amount of a crystalline resin, that is, a toner excellent in low-temperature fixability and coloring power. The toner is a toner including a toner particle containing a binder resin, a pigment and a pigment dispersant, wherein the binder resin contains from 20.0% to 100.0% by mass of a crystalline resin, wherein the pigment dispersant is a polymer containing a specific structure that interacts with the pigment and a specific polymer moiety that interacts with the crystalline resin.
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公开(公告)号：US20240192617A1
公开(公告)日：2024-06-13
申请号：US18502515
申请日：2023-11-06
Applicant: CANON KABUSHIKI KAISHA
Inventor： TATSUYA SAEKI , KENJI AOKI , NAOYA ISONO , MARIKO YAMASHITA , YUKI MASUDA , MEGUMI MORIYA
CPC classification number: G03G9/08711 , G03G9/0819
Abstract: A toner comprises a toner particle, wherein the toner contains a crystalline vinyl resin and an amorphous resin, a weight-average particle diameter of the toner is from 4.0 to 12.0 m, an endothermic quantity ΔH derived from the crystalline vinyl resin is from 10 to 70 J/g, and in an analysis by time-of-flight secondary ion mass spectrometry of the toner particle while under sputtering, with A(100) as the ion amount of a specific hydrocarbon over a sputtering time during which 100 nm of a polymethyl methacrylate standard sample film are shaved, the ion amount exhibits one or more peak values, and with A(dmax) as a maximum value from among the peak values, the above A(dmax) and A(100) satisfy the expression below.
1.5≤A(dmax)/A(100)≤30.0-
公开(公告)号：US20240192618A1
公开(公告)日：2024-06-13
申请号：US18516201
申请日：2023-11-21
Applicant: CANON KABUSHIKI KAISHA
Inventor： YUKI MASUDA , KENJI AOKI , NAOYA ISONO , MARIKO YAMASHITA , TATSUYA SAEKI , MEGUMI MORIYA
CPC classification number: G03G9/08711 , G03G9/0804 , G03G9/0817 , G03G9/0821
Abstract: The toner of the present disclosure comprises a toner particle containing a crystalline resin A, an amorphous resin B, and a release agent, wherein the resin A contains a specific amount of a unit (a) and is contained in a specific amount in the toner, the resin B is contained in a specific amount in the toner, the total content of the resin A and the resin B is 50.0 mass % or more based on the mass of the toner, when a component W having a molecular weight of 5000 or less is isolated from the toner by a certain procedure, the content of the component W is from 0.5 mass % to 20.0 mass % based on the mass of the toner, and the maximum endothermic peak temperature of the component W and the endothermic peak temperature derived from the component W of the toner satisfy a certain requirement.
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