公开(公告)号：US20240053699A1

公开(公告)日：2024-02-15

申请号：US18490462

申请日：2023-10-19

Applicant: CANON KABUSHIKI KAISHA

Inventor： MASAHIRO WATANABE ,  KANA SATO ,  TETSUO HINO ,  RYO OGAWA ,  TAKAYUKI HIRATANI

IPC: G03G15/00 ,  G03G15/08

CPC classification number: G03G15/75 ,  G03G15/0868 ,  G03G2215/066

Abstract: An electrophotographic member comprising: a mandrel; and an elastic layer on an outer periphery of the mandrel, the elastic layer containing a polyurethane elastomer including a matrix and domains dispersed in the matrix, a parameter A and a parameter B satisfying a relationship of A

公开(公告)号：US20240299014A1

公开(公告)日：2024-09-12

申请号：US18596812

申请日：2024-03-06

Applicant: CANON KABUSHIKI KAISHA

Inventor： CHIAKI NISHIURA ,  RYO OGAWA ,  KYOHEI WADA

IPC: A61B8/00

CPC classification number: A61B8/587

Abstract: Provided is an ultrasound phantom including a hydrogel, wherein the hydrogel contains water, a first polysaccharide containing a glucose residue in a main chain thereof, and a mannose residue and a glucuronic acid residue in a side chain thereof, and a second polysaccharide containing a mannose residue in a main chain thereof and a galactose residue in a side chain thereof, and wherein the hydrogel has a Young's modulus of 0.1 kPa or more and 5.0 kPa or less.

公开(公告)号：US20240384106A1

公开(公告)日：2024-11-21

申请号：US18660856

申请日：2024-05-10

Applicant: CANON KABUSHIKI KAISHA

Inventor： TAKAYUKI HIRATANI ,  KYOHEI WADA ,  RYO OGAWA

IPC: C09D4/00 ,  B29C64/129 ,  B29C64/30 ,  B29K33/00 ,  B29K105/00 ,  B29K105/16 ,  B29K275/00 ,  B33Y10/00 ,  B33Y40/20 ,  B33Y70/00 ,  C09D151/08

Abstract: A curable resin composition includes a multifunctional radical polymerizable compound (A), a monofunctional radical polymerizable compound (B), a rubber particle (C), and a radical polymerization initiator (D). The compound (A) includes a multifunctional urethane (meth)acrylate oligomer (a1) in a certain amount based on the total amount of the compounds (A) and (B). The compound (A) and/or (B) contains at least one radical polymerizable compound satisfying expressions (1) to (3) in a certain amount based on the total amount of the compounds (A) and (B). The compound satisfies the expressions (1) to (3) and is a compound other than the oligomer (a1): log(S)≤0.4 (1), 3.0≤δP value≤6.0 (2), molecular weight≤500 (3), log(S) is a common logarithm of solubility in water at 25° C., and δP value is a value of dipole interaction energy in Hansen solubility parameter.

公开(公告)号：US20240307039A1

公开(公告)日：2024-09-19

申请号：US18598091

申请日：2024-03-07

Applicant: CANON KABUSHIKI KAISHA

Inventor： KYOHEI WADA ,  CHIAKI NISHIURA ,  RYO OGAWA

IPC: A61B8/00

CPC classification number: A61B8/587

Abstract: Provided is an ultrasound phantom including: water; a polysaccharide (A) having a sol-gel phase transition point of 30° C. or more and 95° C. or less; and a polysaccharide thickener (B) whose 1 mass % aqueous solution has a viscosity at room temperature of 300 mPa·s or more, wherein the ultrasound phantom is configured to show a tan δ of 0.2 or more under a gel state, which is obtained by dynamic viscoelasticity measurement at 1 Hz and room temperature.

公开(公告)号：US20240255403A1

公开(公告)日：2024-08-01

申请号：US18587732

申请日：2024-02-26

Applicant: CANON KABUSHIKI KAISHA

Inventor： RYO OGAWA ,  TAKAYUKI HIRATANI ,  KANA SATO ,  MASAHIRO WATANABE ,  TETSUO HINO

IPC: G01N3/42 ,  B08B1/16 ,  G01N23/201 ,  G03G21/00

CPC classification number: G01N3/42 ,  B08B1/16 ,  G01N23/201 ,  G01N2203/0082 ,  G03G21/0017

Abstract: The molded body is a non-foamed molded body including a polyurethane, wherein a Martens hardness measured at a point on the surface of the molded body positioned at a shortest distance from the center of gravity G is 1.0 N/mm2 or more, and three points of Martens hardness measured in a cross-section of the molded body satisfies a specific relational expression, wherein an index value Kω from a scattering profile obtained by allowing a characteristic X-ray from a Cu tube to incident on a surface region to be evaluated of the molded body satisfies a specific relational expression, and wherein the molded body has an erosion rate E of 0.6 μm/g or less, which is measured with spherical alumina particles having an average particle diameter (D50) of 3.0 μm in the surface region to be evaluated.

公开(公告)号：US20240043685A1

公开(公告)日：2024-02-08

申请号：US18487225

申请日：2023-10-16

Applicant: CANON KABUSHIKI KAISHA

Inventor： TAKAYUKI HIRATANI ,  RYO OGAWA ,  KANA SATO ,  MASAHIRO WATANABE ,  TETSUO HINO

IPC: C08L75/04 ,  C08G18/10 ,  C08G18/44

CPC classification number: C08L75/04 ,  C08G18/10 ,  C08G18/44

Abstract: Provided is a polyurethane elastomer having excellent friction properties (low friction coefficient), high wear resistance, and low hardness. The polyurethane elastomer includes: a first repeating structural unit represented by the general formula (1) and a second repeating structural unit represented by the general formula (2). The polyurethane elastomer includes a matrix phase and a domain phase dispersed in the matrix phase. The matrix phase includes the first repeating structural unit. The domain phase includes the second repeating structural unit.

公开(公告)号：US20230287151A1

公开(公告)日：2023-09-14

申请号：US18320874

申请日：2023-05-19

Applicant: CANON KABUSHIKI KAISHA

Inventor： TAKAYUKI HIRATANI ,  KYOHEI WADA ,  RYO OGAWA

IPC: C08F2/48 ,  C08F299/06 ,  C08F220/18

CPC classification number: C08F2/48 ,  C08F299/06 ,  C08F220/18 ,  C08F2400/00

Abstract: A photocurable resin composition includes, as a polyfunctional radical-polymerizable compound (A), a polyfunctional urethane (meth)acrylate (a1) intramolecularly including at least two (meth)acryloyl groups and two urethane groups and including a structure represented by General formula (1) or (2), wherein a content of the polyfunctional urethane (meth)acrylate (a1) relative to 100 parts by mass of a total amount of the polyfunctional radical-polymerizable compound (A) and a monofunctional radical-polymerizable compound (B) is 10 parts by mass or more and 60 parts by mass or less, and a content of rubber particles (C) relative to 100 parts by mass of the total amount of the polyfunctional radical-polymerizable compound (A) and the monofunctional radical-polymerizable compound (B) is 2 parts by mass or more and less than 18 parts by mass.