公开(公告)号：US10054881B2

公开(公告)日：2018-08-21

申请号：US15476407

申请日：2017-03-31

Applicant: CANON KABUSHIKI KAISHA

Inventor： Masahiro Tsujibayashi ,  Nobuhiro Kikuchi

IPC: G03G15/20

CPC classification number: G03G15/2039 ,  G03G15/2032 ,  G03G2215/2019

Abstract: An image heating apparatus includes a first heater for heating a first roller, a second heater for heating a second roller, a first sensor for detecting a temperature of a region of an endless belt supported by the first roller, a second sensor for detecting a temperature of a region of the endless belt supported by the second roller, and a controller for controlling energization to the first heater and to the second heater. The controller executes a first mode in which the energization to the first heater is controlled using an output of the first sensor and the energization to the second heater is controlled using an output of the second sensor, and a second mode in which the energization to the first heater and the second heater is controlled using the output of the first sensor without using the output of the second sensor.

公开(公告)号：US20180217541A1

公开(公告)日：2018-08-02

申请号：US15878684

申请日：2018-01-24

Applicant: CANON KABUSHIKI KAISHA

Inventor： Takashi Nomura ,  Takahiro Uchiyama ,  Atsushi Iwasaki

IPC: G03G15/20

CPC classification number: G03G15/2039 ,  G03G15/2042 ,  G03G15/2046 ,  G03G15/2053 ,  G03G2215/2035

Abstract: When a developer image in which the amount of developer per unit area is substantially the same is formed over two adjacent heating regions and a difference between first target temperatures for two adjacent heating regions is outside a predetermined range, the first target temperature for one of the two adjacent heating regions is corrected to a second target temperature which is higher than the first target temperature, so that the difference between the first target temperatures for two adjacent heating regions is within a predetermined range.

公开(公告)号：US20180217535A1

公开(公告)日：2018-08-02

申请号：US15875450

申请日：2018-01-19

Applicant: Oki Data Corporation

Inventor： Kenji KOIDO

IPC: G03G15/20

CPC classification number: G03G15/2039 ,  G03G13/01 ,  G03G13/16 ,  G03G13/20 ,  G03G13/22 ,  G03G15/1605 ,  G03G15/2017 ,  G03G15/6585

Abstract: An image forming apparatus includes a developing section, a transfer section, and a fixing section. The developing section attaches a metal-containing toner to a latent image, and attaches a non-metal-containing toner to the latent image. The transfer section transfers, onto an intermediate transfer medium, the metal-containing toner and transfers, onto a print medium, the metal-containing toner. The transfer section transfers, onto the intermediate transfer medium, the non-metal-containing toner and transfers, onto the print medium, the non-metal-containing toner. The fixing section fixes, to the print medium, the metal-containing toner, and fixes, to the print medium, the non-metal-containing toner. The fixing section causes a temperature at which the metal-containing toner is fixed to the print medium to be lower than a temperature at which the non-metal-containing toner is fixed to the print medium.

公开(公告)号：US20180203409A1

公开(公告)日：2018-07-19

申请号：US15918533

申请日：2018-03-12

Applicant: S-Printing Solution Co., Ltd.

Inventor： Hwa-chul CHOI ,  Yun-su KIM

IPC: G03G21/20 ,  G03G15/01 ,  G03G15/20

CPC classification number: G03G21/20 ,  G03G15/011 ,  G03G15/2039

Abstract: An image forming apparatus comprises a fuser to fuse a print sheet having a surface on which toner is developed, the fuser including a heating element, and a controller to control a number of waveforms of an alternating current (AC) power to be supplied to the heating element, within a control cycle to control the fuser to fuse the print sheet at a target temperature and to vary the control cycle, according to a temperature of the fuser.

公开(公告)号：US20180188672A1

公开(公告)日：2018-07-05

申请号：US15905154

申请日：2018-02-26

Applicant: CANON KABUSHIKI KAISHA

Inventor： Hiroki Kawai

IPC: G03G15/20

CPC classification number: G03G15/205 ,  G03G15/20 ,  G03G15/2039 ,  G03G15/206 ,  G03G15/55 ,  G03G2215/2041

Abstract: An image heating apparatus includes an endless belt for heating a toner image on a sheet; a first detector for detecting a temperature of one longitudinal end portion of the endless belt; a second detector for detecting a temperature of the other longitudinal end portion of the endless belt; and a controller for controlling whether or not notification of generation of an error is provided on the basis of a change amount per unit time of a difference in detection temperature between the first detector and the second detector.

公开(公告)号：US20180173142A1

公开(公告)日：2018-06-21

申请号：US15829455

申请日：2017-12-01

Applicant: CANON KABUSHIKI KAISHA

Inventor： Jun Hara ,  Kenichi Iida ,  Shimpei Ishikawa

IPC: G03G15/16

CPC classification number: G03G15/5004 ,  G03G15/0131 ,  G03G15/16 ,  G03G15/1645 ,  G03G15/1675 ,  G03G15/2039 ,  G03G21/20 ,  G03G21/203 ,  G03G2215/2035

Abstract: A heating member of a fixing unit is situated in a fixing portion, and a commercial power source applies an alternating-current voltage to the heating member so that the heating member heats a transfer medium held in the fixing portion. In a case of transferring the toner image from an image bearing member onto the transfer medium in a transfer portion, a control unit controls a transfer power source based on a result of a comparison between a frequency obtained from a first detection result input from a detection unit with a predetermined frequency range including the frequency of the alternating-current voltage.

公开(公告)号：US20180164729A1

公开(公告)日：2018-06-14

申请号：US15839921

申请日：2017-12-13

Applicant: CANON KABUSHIKI KAISHA

Inventor： Takahiro Uchiyama ,  Toshiya Kaino ,  Kuniaki Kasuga ,  Taisuke Minagawa

IPC: G03G15/20

CPC classification number: G03G15/553 ,  G03G15/2039 ,  G03G15/2064

Abstract: An image forming apparatus includes an image forming portion for forming an image on a sheet; a fixing portion for fixing the image on the sheet, the fixing portion including first and second rotatable members cooperative with each other to form a nip, wherein the sheet carrying a toner image is subjected to a fixing process by passing through the nip so that the toner image is fixed on the sheet; an acquiring portion configured to acquire information relating to remaining service life of each area provided by dividing the first rotatable member into a plurality of areas in a longitudinal direction of the first rotatable member; and a notifying portion configured to notify a remaining service life of the fixing portion or the image forming apparatus in accordance with the information acquired by the acquiring portion.

公开(公告)号：US09996034B2

公开(公告)日：2018-06-12

申请号：US15584187

申请日：2017-05-02

Applicant: KABUSHIKI KAISHA TOSHIBA ,  TOSHIBA TEC KABUSHIKI KAISHA

Inventor： Shoko Shimmura ,  Osamu Takagi

IPC: G03G15/20

CPC classification number: G03G15/2039 ,  G03G15/2042 ,  G03G15/2053 ,  G03G2215/2022

Abstract: According to one embodiment, a fixing device includes determination means for determining the size of a medium, heating means for including plural heat-generating members which are two-dimensionally arranged such that the heat-generating members are lined up along two parallel lines or more which are vertical to a transport direction of the medium and divided at locations on the parallel lines, and are disposed so as to come into contact with an inner side of the rotating body, and a switching unit which switches individual conduction, and heats the medium, pressing means for forming a nip by performing pressing and contact at a position of the plural heat-generating members, and heating control means for selecting a group of the heat-generating members which are lined up in the two-dimensional arrangement, conducting the selected group of the heat-generating members, and controlling the heating means.

公开(公告)号：US09989900B2

公开(公告)日：2018-06-05

申请号：US15388473

申请日：2016-12-22

Applicant: CANON KABUSHIKI KAISHA

Inventor： Mahito Yoshioka ,  Satoru Izawa ,  Masahide Hirai ,  Munehito Kurata

IPC: G03G15/20 ,  G03G15/00

CPC classification number: G03G15/2039 ,  G03G15/5041 ,  G03G15/5058 ,  G03G15/556 ,  G03G2215/00037

Abstract: An image forming apparatus includes an image forming unit, an acquisition unit, a fixing unit including a heating member and a pressure member forming a nip, a temperature detecting unit, and a control unit. In a case where a toner density of a toner image on a k-th recording material of a plurality of recording materials is less than the toner density of the toner image on a (k-1)-th recording material of the plurality of recording materials, k being an integer greater than or equal to two, the control unit sets a fixing temperature of the k-th recording material to a temperature which is greater than a predetermined temperature predetermined based on image information of the toner image to be formed on the k-th recording material.

公开(公告)号：US09983526B2

公开(公告)日：2018-05-29

申请号：US15618819

申请日：2017-06-09

Applicant: Ricoh Company, Ltd.

Inventor： Takeshi Uchitani ,  Masahiko Satoh ,  Kenji Ishii ,  Tadashi Ogawa ,  Teppei Kawata ,  Arinobu Yoshiura ,  Toshihiko Shimokawa ,  Kensuke Yamaji ,  Takamasa Hase ,  Shuutaroh Yuasa ,  Masaaki Yoshikawa ,  Hiromasa Takagi ,  Takahiro Imada ,  Hajime Gotoh ,  Akira Suzuki ,  Takuya Seshita ,  Hiroshi Yoshinaga ,  Kazuya Saito ,  Shinichi Namekata ,  Takayuki Seki ,  Yuji Arai ,  Ryuuichi Mimbu ,  Yoshiki Yamaguchi ,  Shuntaroh Tamaki ,  Yutaka Ikebuchi

IPC: G03G15/20

CPC classification number: G03G15/2064 ,  G03G15/2039 ,  G03G15/205 ,  G03G2215/2035

Abstract: A fixing device includes a heat source; a fixing member looped into a generally cylindrical shape to rotate in a circumferential direction thereof and partially heated by the heat source and to heat a surface of a recording medium bearing an unfixed toner image to fix the unfixed toner image thereon in a fixing process; a rotary pressing member disposed facing the fixing member to form a nip therebetween, through which the recording medium is transported in a transport direction; and a rotation driver to rotate one of the fixing member and the pressing member. In a case in which the fixing member is halted for a reason other than the fixing process while power of the fixing device is on, electric power is not supplied to the heat source and the fixing member is rotated by a predetermined amount or more after the fixing member is halted.