公开(公告)号：US20240310759A1

公开(公告)日：2024-09-19

申请号：US18592544

申请日：2024-03-01

申请人： Arinobu YOSHIURA ,  Takamasa HASE ,  Daisuke INOUE ,  Kentaro YAMASHITA ,  Shogo NAKAMOTO ,  Mototaka IWAMA

发明人： Arinobu YOSHIURA ,  Takamasa HASE ,  Daisuke INOUE ,  Kentaro YAMASHITA ,  Shogo NAKAMOTO ,  Mototaka IWAMA

IPC分类号： G03G15/20

CPC分类号： G03G15/2025 ,  G03G15/2064

摘要： A fixing device includes a fixing rotator rotatable in a rotation direction, a heat source to heat the fixing rotator, a pressure rotator contacting the fixing rotator, a nip formation pad to form a fixing nip between the fixing rotator and the pressure rotator, a slide sheet, and an adhesive part. The slide sheet between the fixing rotator and the nip formation pad contacts an inner circumferential face of the fixing rotator. The slide sheet has a center part and both end parts in an axial direction orthogonal to the rotation direction. The adhesive part bonds the slide sheet to the nip formation pad. The adhesive part includes a first adhesive part on the center part and a second adhesive part on one of the end parts. The first adhesive part has a first area, and the second adhesive part has a second area smaller than the first area.

公开(公告)号：US20240353778A1

公开(公告)日：2024-10-24

申请号：US18637488

申请日：2024-04-17

申请人： Daisuke INOUE ,  Takamasa HASE ,  Kentaro YAMASHITA ,  Arinobu YOSHIURA ,  Shogo NAKAMOTO ,  Mototaka IWAMA

发明人： Daisuke INOUE ,  Takamasa HASE ,  Kentaro YAMASHITA ,  Arinobu YOSHIURA ,  Shogo NAKAMOTO ,  Mototaka IWAMA

IPC分类号： G03G15/20 ,  G03G15/00 ,  G03G15/01

CPC分类号： G03G15/2017 ,  G03G15/0105 ,  G03G15/0189 ,  G03G15/2064 ,  G03G15/50

摘要： An image forming apparatus includes an image forming section, a fixing device, and circuitry. The image forming section forms an image on a recording medium. The fixing device includes a rotator including a flexible endless belt, a pressure rotator pressed against the rotator to form a nip between the rotator and the pressure rotator, a heater heating the rotator, and a movable shield. The movable shield is disposed between the heater and the rotator to shield the rotator from radiant heat generated from the heater and is movable according to a size of the recording medium. The circuitry is configured to control the image forming section to form the image on the recording medium based on an image forming condition and change at least one of an operating temperature of the movable shield or a shielding amount of the movable shield based on the image forming condition.

公开(公告)号：US20240353781A1

公开(公告)日：2024-10-24

申请号：US18627461

申请日：2024-04-05

申请人： Kentaro YAMASHITA ,  Takamasa HASE ,  Arinobu YOSHIURA ,  Daisuke INOUE ,  Mototaka IWAMA ,  Ryohhei SUGIYAMA

发明人： Kentaro YAMASHITA ,  Takamasa HASE ,  Arinobu YOSHIURA ,  Daisuke INOUE ,  Mototaka IWAMA ,  Ryohhei SUGIYAMA

IPC分类号： G03G15/20 ,  G03G15/00

CPC分类号： G03G15/205 ,  G03G15/2064 ,  G03G15/5004 ,  G03G2215/00978 ,  G03G2215/2035

摘要： A fixing device includes a first rotator and a second rotator that form a nip therebetween and fix an image on a recording medium that enters the nip. A heater heats at least one of the first rotator or the second rotator. A controller controls the heater to switch between a first heating and a second heating, to switch from the first heating to the second heating before the recording medium enters the nip, to start the second heating at a time prior to a nip entry time at which the recording medium enters the nip by a delay time period taken for the heater to conduct heat to the nip, and to continue the first heating before the second heating for at least one control cycle at a duty cycle of power supplied to the heater. The duty cycle is not greater than 40%.

公开(公告)号：US20230093465A1

公开(公告)日：2023-03-23

申请号：US17900880

申请日：2022-09-01

申请人： Toshiyuki KABATA ,  Yoshiki YAMAGUCHI ,  Takashi SETO ,  Hiroshi YOSHINAGA ,  Kentaro YAMASHITA ,  Daisuke INOUE

发明人： Toshiyuki KABATA ,  Yoshiki YAMAGUCHI ,  Takashi SETO ,  Hiroshi YOSHINAGA ,  Kentaro YAMASHITA ,  Daisuke INOUE

IPC分类号： G03G15/20

摘要： A nip former that forms a nip between an endless belt and a pressure rotator includes a base that is made of aluminum and has a nip forming face disposed opposite the nip. An anodic oxidation coating is treated with sealing and coats at least the nip forming face. The anodic oxidation coating has a thickness that is not smaller than 22 μm and is not greater than 45 μm and a variation in thickness that is not greater than 20 percent. The base and the anodic oxidation coating define a nip forming portion that is disposed opposite the nip. The nip forming portion has a thickness that is not smaller than 0.40 mm and is not greater than 1.20 mm.

公开(公告)号：US20230280682A1

公开(公告)日：2023-09-07

申请号：US18157388

申请日：2023-01-20

申请人： Ryohei MATSUDA ,  Kentaro YAMASHITA

发明人： Ryohei MATSUDA ,  Kentaro YAMASHITA

IPC分类号： G03G15/20

CPC分类号： G03G15/2039

摘要： A fixing device includes a fixing rotator, a first heater, a second heater, and circuitry. The first heater heats a region on the fixing rotator to heat a recording medium having a width smaller than a predetermined width. The second heater heats a region on the fixing rotator to heat a maximum recording medium used in the fixing device. The second heater has a heat generation distribution in which a heat generation amount of each of both end portions corresponding to both end portions of the maximum recording medium in a width direction of the recording medium is larger than a heat generation amount of a center portion. The circuitry determines whether to turn on the first heater and turn off the second heater or to turn on both the first heater and the second heater based on a required power to bring the fixing rotator to a fixing temperature.

公开(公告)号：US20220291613A1

公开(公告)日：2022-09-15

申请号：US17580703

申请日：2022-01-21

申请人： Yoshiki YAMAGUCHI ,  Ippei FUJIMOTO ,  Takashi SETO ,  Hiroshi YOSHINAGA ,  Kentaro YAMASHITA

发明人： Yoshiki YAMAGUCHI ,  Ippei FUJIMOTO ,  Takashi SETO ,  Hiroshi YOSHINAGA ,  Kentaro YAMASHITA

IPC分类号： G03G15/20

摘要： A nip formation pad includes a base, a high thermal conduction member, and an attachment. The high thermal conduction member has a thermal conductivity greater than a thermal conductivity of the base. The attachment is attached to the high thermal conduction member by elastic deformation of the attachment on the base held between the high thermal conduction member and the attachment.

公开(公告)号：US20210223722A1

公开(公告)日：2021-07-22

申请号：US17111783

申请日：2020-12-04

申请人： Kentaro YAMASHITA

发明人： Kentaro YAMASHITA

IPC分类号： G03G15/20

摘要： A fixing device includes a fixing rotator that is endless and rotates in a rotation direction and a pressure rotator that contacts an outer circumferential surface of the fixing rotator to form a nip between the fixing rotator and the pressure rotator. A flange is disposed opposite each lateral end of the fixing rotator in an axial direction of the fixing rotator and contacts an inner circumferential surface of the fixing rotator. The flange includes a first portion disposed farthest from the nip and a second portion disposed in proximity to the nip. The flange is inclined to define a distance from the inner circumferential surface of the fixing rotator to the flange in a separation direction in which the flange separates from the inner circumferential surface of the fixing rotator. The distance increases from the first portion to the second portion.