公开(公告)号：US20240168420A1

公开(公告)日：2024-05-23

申请号：US18490924

申请日：2023-10-20

Applicant: CANON KABUSHIKI KAISHA

Inventor： MAKOTO SOUMA ,  MATSUTAKA MAEDA ,  AKIRA OKANO ,  NAOKO KASAI ,  TAKAAKI TSURUYA

IPC: G03G15/20 ,  H05B6/38

CPC classification number: G03G15/2057 ,  H05B6/38 ,  H05B2206/022

Abstract: A fixing rotating member comprising: a base material and an electro-conductive layer on the base material; the electro-conductive layer extending in a circumferential direction of an outer peripheral surface of the base material, the electro-conductive layer comprising silver, an average crystal grain size of crystals of the silver observed in a cross section along a circumferential direction of the electro-conductive layer being 20 to 200 nm, and the electro-conductive layer having a volume resistivity of 1.0×10−8 to 8.0×10−8 Ω·m.

公开(公告)号：US20240160135A1

公开(公告)日：2024-05-16

申请号：US18490933

申请日：2023-10-20

Applicant: CANON KABUSHIKI KAISHA

Inventor： MATSUTAKA MAEDA ,  TAKAAKI TSURUYA ,  AKIRA OKANO ,  MAKOTO SOUMA ,  NAOKO KASAI

IPC: G03G15/20

CPC classification number: G03G15/2057

Abstract: A fixing rotating member comprising: a substrate comprising a resin; an electro-conductive layer on the substrate; and a resinous layer on a surface of the electro-conductive layer, the surface being opposed to a side of the electro-conductive layer facing the substrate, the electro-conductive layer extending in a circumferential direction of an outer peripheral surface of the substrate, the electro-conductive layer comprising silver, the electro-conductive layer having, in a thickness direction thereof, a through-hole, wherein at least a part of the through-hole is penetrated by a resin that constitutes at least a part of the resinous layer.

公开(公告)号：US20230195015A1

公开(公告)日：2023-06-22

申请号：US18167202

申请日：2023-02-10

Applicant: CANON KABUSHIKI KAISHA

Inventor： YUJI KITANO ,  MATSUTAKA MAEDA ,  MAKOTO SOUMA ,  YASUHIRO MIYAHARA ,  YUTARO YOSHIDA ,  SHIGEO KURODA

IPC: G03G15/20 ,  C08G77/20 ,  C08G77/12 ,  C08G77/08 ,  C08K3/02

CPC classification number: G03G15/2057 ,  C08G77/20 ,  C08G77/12 ,  C08G77/08 ,  C08K3/02 ,  C08K2003/023

Abstract: A fixing member including: a substrate; and an elastic layer arranged on the substrate, wherein the elastic layer contains a silicone rubber and metal silicon powder dispersed in the silicone rubber, wherein the elastic layer has an elastic modulus of 0.10 MPa or more and 0.40 MPa or less, and wherein the metal silicon powder has an aspect ratio of 1.4 or more and 2.5 or less, and a repose angle of 35° or more and 52° or less.

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.

公开(公告)号：US20240160136A1

公开(公告)日：2024-05-16

申请号：US18490973

申请日：2023-10-20

Applicant: CANON KABUSHIKI KAISHA

Inventor： AKIRA OKANO ,  TAKAAKI TSURUYA ,  MATSUTAKA MAEDA ,  MAKOTO SOUMA ,  NAOKO KASAI

IPC: G03G15/20 ,  H05B6/38

CPC classification number: G03G15/2057 ,  H05B6/38 ,  H05B2206/022

Abstract: A fixing rotating member comprising: a cylindrical base member comprising at least a resin; an electro-conductive layer on the base member; and a resinous layer on a surface of the electro-conductive layer, the surface being opposed to a surface facing the base member, the electro-conductive layer extending in a circumferential direction of an outer circumferential surface of the base member, the electro-conductive layer comprising silver, the electro-conductive layer having a volume resistivity of 1.0×10−8 to 8.0×10−8 Ω·m, and the electroconductive layer having a compressive elastic modulus of 8 to 30 GPa, the elastic modulus being measured by contacting an indenter with a first surface of the electroconductive layer opposite to a surface facing the base member, and the elastic modulus being an average value of elastic moduli of a thickness region of 0.1 to 0.2 μm from the first surface of the electroconductive layer.

公开(公告)号：US20230341800A1

公开(公告)日：2023-10-26

申请号：US18299241

申请日：2023-04-12

Applicant: CANON KABUSHIKI KAISHA

Inventor： YASUHIRO MIYAHARA ,  SHIGEO KURODA ,  MATSUTAKA MAEDA ,  YUJI KITANO ,  MAKOTO SOUMA ,  YUTARO YOSHIDA

IPC: G03G15/20

CPC classification number: G03G15/2057 ,  G03G15/206 ,  G03G15/2064 ,  G03G2215/2051 ,  G03G2215/2054

Abstract: An electrophotographic member having an endless shape comprises: a substrate; and an elastic layer on an outer peripheral surface thereof. The elastic layer contains a silicone rubber and metal silicon fillers dispersed in the silicone rubber. An average of area ratios of the metal silicon fillers in respective first binarized images is 42% or less, and an average of area ratios of the metal silicon fillers in respective second binarized images is 42% or less. The elastic layer has λ of 1.30 W/(m·K) or more, where λ is a thermal conductivity of the elastic layer in a thickness direction thereof, and the elastic layer has pV of 9.0 LOGΩ·cm or more, where pV is a common logarithm value of a volume resistivity thereof.

公开(公告)号：US20230205123A1

公开(公告)日：2023-06-29

申请号：US18066426

申请日：2022-12-15

Applicant: CANON KABUSHIKI KAISHA

Inventor： YUJI KITANO ,  MATSUTAKA MAEDA ,  MAKOTO SOUMA ,  YUTARO YOSHIDA ,  YASUHIRO MIYAHARA ,  SHIGEO KURODA

IPC: G03G15/20

CPC classification number: G03G15/2057

Abstract: A fixing member includes a substrate having an endless shape; and an elastic layer on an outer peripheral surface of the substrate, the elastic layer containing a silicone rubber and fillers dispersed in the silicone rubber, a content of the fillers with respect to the elastic layer being 35 vol % or more and 50 vol % or less. The fillers includes at least a first filler and a second filler. The first filler is at least one selected from the group consisting of: magnesium oxide; and zinc oxide. The second filler is at least one selected from the group consisting of metal silicon and silicon carbide. A proportion of a sum of the first filler and the second filler to a total amount of the fillers in the elastic layer is 90 vol % or more. Further, the average of 6 sets of representative coefficient A is 1.4 or more.