公开(公告)号：US20240019803A1

公开(公告)日：2024-01-18

申请号：US18220844

申请日：2023-07-12

Applicant: Hiroaki TAKAGI

Inventor： Hiroaki TAKAGI

IPC: G03G15/00 ,  G03G15/16 ,  G03G15/20

CPC classification number: G03G15/5008 ,  G03G15/1615 ,  G03G15/162 ,  G03G15/2064 ,  G03G15/758 ,  G03G2215/0617

Abstract: A transfer device includes a movable component, a moving assembly, a restrictor, and an operating member. The movable component moves toward and away from a latent image bearer unit. The moving assembly causes the movable component to move toward and away from the latent image bearer unit. The restrictor restricts the latent image bearer unit from detaching from an image forming apparatus. The operating member causes the moving assembly to move the movable component away from the latent image bearer unit and releases restriction of detachment of the latent image bearer unit from the image forming apparatus by the restrictor.

公开(公告)号：US11841657B2

公开(公告)日：2023-12-12

申请号：US17830234

申请日：2022-06-01

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yasuhiro Shimura ,  Koji Nihonyanagi ,  Ryota Ogura

IPC: G03G15/20 ,  G03G15/00 ,  H05B3/03

CPC classification number: G03G15/2053 ,  G03G15/80 ,  H05B3/03 ,  G03G15/2014 ,  G03G15/2064 ,  G03G2215/2035 ,  H05B2203/016

Abstract: The present invention relates to an image heating apparatus that includes a heater including a plurality of independently controllable heating blocks in a longitudinal direction thereof, each including a first conductor, a second conductor, and a heating element. At least one of electrodes corresponding to the respective heating blocks is disposed in an area where the heating element is located in the longitudinal direction on a second surface of the heater that is opposite to a first surface that comes into contact with an endless belt. An electrical contact is arranged so as to face the second surface of the heater. An overheating occurring in a no-media passage portion when an image formed on a recording material having a small size is heated is suppressed or reduced.

公开(公告)号：US20230393502A1

公开(公告)日：2023-12-07

申请号：US18454969

申请日：2023-08-24

Applicant: Canon Kabushiki Kaisha

Inventor： Nozomu Nakajima ,  Tomohiro Nakamori

IPC: G03G15/20

CPC classification number: G03G15/2042 ,  G03G15/2053 ,  G03G15/2064 ,  G03G2215/2022

Abstract: The heating apparatus including a plurality of heat generation members including first, second and third generation members, the second heat generation member and the third heat generation member having lengths in a longitudinal direction shorter than a length of the first heat generation member, the heating apparatus including first, second, third, and fourth contacts, and a first switching unit configured to bring an electric path between the second contact and the fourth contact into one of a connecting state and an open state.

公开(公告)号：US11835896B2

公开(公告)日：2023-12-05

申请号：US17882491

申请日：2022-08-05

Applicant: CANON KABUSHIKI KAISHA

Inventor： Tsuguhiro Yoshida ,  Kohei Wakatsu

IPC: G03G15/20

CPC classification number: G03G15/2053 ,  G03G15/2042 ,  G03G15/2064 ,  G03G2215/2035

Abstract: A fixing device includes a substrate, a first heat generator, a second heat generator with a length in a longitudinal direction of the substrate equal to a length of the first heat generator; and a third heat generator with a length shorter than the lengths of the first and second heat generators, a soaking member with a positioning portion in the longitudinal direction. In a short side direction of the substrate, the first heat generator is arranged at one end side, the second heat generator is arranged at the other end side, and the third heat generator is arranged between the first and second heat generators. The soaking member is arranged between the heater and a holder in a thickness direction. As seen in the short side direction, the positioning portion is positioned outside of an area corresponding to the third heat generator and inside of an area corresponding to the first heat generator.

公开(公告)号：US11835895B2

公开(公告)日：2023-12-05

申请号：US17692595

申请日：2022-03-11

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Minoru Tomiyori

IPC: G03G15/20

CPC classification number: G03G15/2053 ,  G03G15/205 ,  G03G15/2032 ,  G03G15/2064 ,  G03G2215/2038

Abstract: A fixing device includes: a fixing belt; a facing member disposed on an inner side of the fixing belt; a pressure roller that presses against the fixing belt toward the facing member from outside to form a fixing nip area; a heat source; a non-passage area temperature measurer that measures a temperature of a sheet non-passage area; a pressure roller swinger that swings one end side of the pressure roller in a direction intersecting with a longitudinal direction of the fixing nip area; and a controller that performs meandering correction control for correcting a movement direction of the fixing belt by causing the pressure roller swinger to swing the pressure roller, and the controller has such a movement mode as to cause the pressure roller swinger to forcibly move the fixing belt in a direction away from the non-passage area temperature measurer while rotating the fixing belt.

公开(公告)号：US11822278B2

公开(公告)日：2023-11-21

申请号：US18049196

申请日：2022-10-24

Applicant: CANON KABUSHIKI KAISHA

Inventor： Naoto Tokuma

IPC: G03G15/20 ,  G03G15/00 ,  B65H29/24

CPC classification number: G03G15/657 ,  B65H29/242 ,  G03G15/2017 ,  G03G15/2064 ,  B65H2404/264 ,  B65H2404/2691 ,  B65H2404/281 ,  B65H2801/12 ,  G03G2215/00679 ,  G03G2215/00945

Abstract: An image forming apparatus includes a transfer unit forming a transfer nip portion, a fixing unit forming a fixing nip portion, and first and second belt suction conveyance units to suck a sheet onto a first belt and a second belt, respectively. The fixing nip portion is arranged at a position above the transfer nip portion. In a sheet conveyance direction, an upstream end portion of the first belt in the first belt suction conveyance unit is provided below the transfer nip portion, a downstream end portion of the first belt is provided above an upstream end portion of the second belt in the second belt suction conveyance unit, and a downstream end portion of the second belt is provided below the fixing nip portion. The first and second belts are inclined from a lower position to an upper position from upstream to downstream in the sheet conveyance direction.

公开(公告)号：US11822272B2

公开(公告)日：2023-11-21

申请号：US17672124

申请日：2022-02-15

Applicant: TOSHIBA TEC KABUSHIKI KAISHA

Inventor： Sasuke Endo

IPC: G03G15/20

CPC classification number: G03G15/2053 ,  G03G15/2039 ,  G03G15/2064 ,  G03G2215/2032

Abstract: A heating unit includes a cylinder which rotates about an axis parallel to a first direction. A heater has a first surface abutting on an inner surface of the cylinder at a nip position. A support member is on a second surface of the heater and also contacts the cylinder. A first heating element is in the heater at a first position along the first direction. A second heating element in the heater is at a second position spaced from the first position. A first temperature sensor is above the first position. A locking portion of the heater is at a third position along the first direction. The locking portion engages the support member and restricts movement of the heater in the first direction. The first position is near a first outer edge of the cylinder. The second position is closer to a central portion of the cylinder.

公开(公告)号：US11809106B2

公开(公告)日：2023-11-07

申请号：US17807023

申请日：2022-06-15

Applicant: BROTHER KOGYO KABUSHIKI KAISHA

Inventor： Sadaharu Kato ,  Shuhei Fukue ,  Hirotaka Imaeda ,  Shunsuke Ueki ,  Yusuke Mizuno

IPC: G03G15/20

CPC classification number: G03G15/2039 ,  G03G15/2017 ,  G03G15/2064

Abstract: In an image forming apparatus, a controller causes a first fixing member to heat up to a standby temperature Tr lower than a fixing temperature, through a control process executed from a state in which rotation of the first fixing member is stopped and a nip pressure is set at a second pressure smaller than a first pressure. The control process includes: a first process of activating and controlling a heater to cause the first fixing member to heat up toward a target temperature; a second process of starting the rotation of the first fixing member; a third process of changing the nip pressure from the second pressure to the first pressure; a fourth process of changing the nip pressure from the first pressure to the second pressure; and a fifth process of stopping the rotation of the first fixing member, executed in this sequence.

公开(公告)号：US11809104B2

公开(公告)日：2023-11-07

申请号：US17699639

申请日：2022-03-21

Applicant: CANON KABUSHIKI KAISHA

Inventor： Hiroshi Kataoka

IPC: G03G15/20

CPC classification number: G03G15/2039 ,  G03G15/2064 ,  G03G2215/2025

Abstract: An image heating apparatus includes an image heating portion including a heater, a tubular film having an inner surface in contact with the heater, and a pressure member that is in contact with the outer surface of the film and forms a nip portion for conveying a recording material between the outer surface and the pressure member. The image heating portion heats an unfixed toner image on the recording material by the heater. A temperature detection portion detects the temperature of the heater. A control portion controls electric power to the heater such that the temperature detected by the temperature detection portion is maintained at a predetermined control target temperature. An obtainment portion obtains image information for forming the unfixed toner image. The control target temperature is set, based on the image information, for each of a plurality of regions defined by dividing the recording material in the conveying direction.

公开(公告)号：US11803140B2

公开(公告)日：2023-10-31

申请号：US18069085

申请日：2022-12-20

Applicant: KYOCERA Document Solutions Inc.

Inventor： Sachio Izumichi ,  Takehiro Sato

IPC: G03G15/20 ,  G03G21/16

CPC classification number: G03G15/2035 ,  G03G15/2064 ,  G03G21/1685 ,  G03G2215/2032 ,  G03G2221/1684

Abstract: A heating unit urging member urges a first support body of a heating unit toward a second support body of a fixing unit with elastic force. The heating unit urging member brings the first support body into contact with the second support body and brings the second support body into contact with two struts. An interlocking mechanism moves the heating unit along a direction in which the heating unit and the fixing unit are arranged, in conjunction with movement of an operation portion. When the operation portion moves from a first position to a second position, the interlocking mechanism moves the first support body from a reference position where the first support body is in contact with the second support body to a retracted position where the first support body is separated from the second support body.