公开(公告)号：US20250093798A1

公开(公告)日：2025-03-20

申请号：US18826519

申请日：2024-09-06

Applicant: CANON KABUSHIKI KAISHA

Inventor： TOMOE HIRAYANAGI ,  MASATSUGU TOYONORI ,  HIROOMI KOJIMA

IPC: G03G15/16

Abstract: An electrophotographic belt is provided, which includes a base layer having an endless shape, and a conductive layer in contact with the base layer, wherein the base layer contains a crystalline polyester, the conductive layer contains a crosslinked polyester urethane having a triazine ring in a molecule, and when 8 square observation regions each having a side length of 2.5 mm are placed in a circumferential direction of the electrophotographic belt, at least 6 observation regions among the 8 observation regions have a coefficient of variation of nanoindentation hardness of not more than 0.25.

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：US20240288800A1

公开(公告)日：2024-08-29

申请号：US18441115

申请日：2024-02-14

Applicant: CANON KABUSHIKI KAISHA

Inventor： YUJI KITANO ,  MAKOTO SOUMA ,  NAOKO KASAI ,  YUTARO YOSHIDA ,  MASATSUGU TOYONORI ,  YASUTOMO TSUJI

IPC: G03G15/16 ,  C08K3/22 ,  C08L33/08

CPC classification number: G03G15/162 ,  C08K3/22 ,  C08L33/08 ,  C08K2003/2231 ,  C08K2201/001

Abstract: An electrophotographic member having a base layer and a surface layer, wherein the surface layer comprises a binder resin; and a plurality of particles comprising a conductive tin oxide, in the binder resin, a content ratio of the particles comprising a conductive tin oxide, in the surface layer, is 2.0 to 10.0 vol %, and a value of an L function denoting a relationship of a distribution of the particles comprising a conductive tin oxide, as observed from a surface of the surface layer, is always positive in a range of 300 nm to 1 μm of a distance from barycentric coordinates of the particles.