公开(公告)号：US20250110427A1

公开(公告)日：2025-04-03

申请号：US18770262

申请日：2024-07-11

Applicant: CANON KABUSHIKI KAISHA

Inventor： MASAHIRO TAKENAGA

IPC: G03G15/16 ,  C08K3/30 ,  C08K5/3415 ,  C08K5/3432 ,  C08K5/3445 ,  C08L67/02

Abstract: An electrophotographic member, wherein the electrophotographic member comprises a resin layer, the resin layer is electrically conductive, the resin layer comprises an aromatic ring-containing polyester and a fluorosulfonylimide anion and a double bond-containing cation, and the aromatic ring-containing polyester is a polyester selected from the group consisting of polyesters of the following (i) to (iv) or a mixture of two or more polyesters selected from the group consisting of polyesters of the following (i) to (iv): (i) polyethylene naphthalate, (ii) polyethylene terephthalate, (iii) modified polyethylene terephthalate in which the proportion of acid monomer unit other than terephthalic acid unit is 6 mol % or less in all acid monomer unit; and, (iv) modified polyethylene naphthalate in which the proportion of acid monomer unit other than naphthalenedicarboxylic acid unit is 6 mol % or less in all acid monomer unit.

公开(公告)号：US20240192615A1

公开(公告)日：2024-06-13

申请号：US18485843

申请日：2023-10-12

Applicant: CANON KABUSHIKI KAISHA

Inventor： MASAHIRO TAKENAGA ,  TOMOE HIRAYANAGI

IPC: G03G5/10 ,  C08K3/22 ,  C08K3/36 ,  C08K5/09 ,  C08K5/19 ,  C08K5/3445 ,  C08K5/41 ,  C08K5/42 ,  C08K5/50 ,  C08K5/52 ,  C08K5/5313 ,  C08L67/02 ,  G03G15/00

CPC classification number: G03G5/105 ,  C08K3/22 ,  C08K3/36 ,  C08K5/09 ,  C08K5/19 ,  C08K5/3445 ,  C08K5/41 ,  C08K5/42 ,  C08K5/50 ,  C08K5/5205 ,  C08K5/5313 ,  C08L67/02 ,  G03G15/75 ,  C08K2003/2227 ,  C08K2003/2241 ,  C08K2201/001 ,  C08K2201/006

Abstract: An electrophotographic member, comprising a resin layer, the resin layer being electrically conductive, and the resin layer comprising: a thermoplastic polyester; a cation; an anion that does not contain a fluorine atom in a molecule of the anion; and a particle containing a metal oxide and having hydrophilization rate of 0.50 or more.

公开(公告)号：US20250164911A1

公开(公告)日：2025-05-22

申请号：US18939828

申请日：2024-11-07

Applicant: CANON KABUSHIKI KAISHA

Inventor： NAOKO KASAI ,  MASAHIRO TAKENAGA ,  YASUTOMO TSUJI ,  MASATSUGU TOYONORI

IPC: G03G15/16

Abstract: An electrophotographic belt is provided, which includes a base layer and a surface layer in direct contact with the base layer, wherein the surface layer includes heteroaggregates of a first particle and a second particle, the first particle is at least one selected from the group consisting of a hollow silica particle and a solid silica particle, and has a number-average particle diameter of primary particles, which is greater than 30 nm and less than 100 nm, the second particle contains a conductive metal oxide, and has a number-average particle diameter of primary particles, which is 5 nm to 40 nm, the surface layer has protruded portions derived from the heteroaggregates on an outer surface opposite to the surface facing the base layer, an arithmetic mean height (Sa) of the outer surface is 0.1 μm to 0.7 μm, and the base layer includes specific cation and anion.

公开(公告)号：US20240142900A1

公开(公告)日：2024-05-02

申请号：US18480609

申请日：2023-10-04

Applicant: CANON KABUSHIKI KAISHA

Inventor： YUSUKE BABA ,  TAKESHI SUZUKI ,  MATSUTAKA MAEDA ,  ATSUSHI HORI ,  MASAHIRO TAKENAGA ,  HARUKI MORI ,  SHOTA INOUE

IPC: G03G15/16 ,  C08L83/04

CPC classification number: G03G15/162 ,  C08L83/04

Abstract: An electrophotographic belt comprising: a substrate and an elastic layer on an outer peripheral surface of the substrate, the elastic layer comprising a cured rubber product including a cured silicone rubber product, an elastic modulus of the elastic layer at a temperature of 23° C. being 1.00 MPa or less, wherein when 1 g sample collected from the elastic layer is immersed in 50 ml of toluene at a temperature of 23° C. for 24 hours in accordance with Japanese Industrial Standard (JIS) K6258:2016, an extract of 3% by mass to 20% by mass with respect to the sample is extracted, and a burning time of the elastic layer in a burn test in accordance with UL94 VTM standard is 30 seconds or less.