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1.发明授权公开(公告)号：US11669028B2
公开(公告)日：2023-06-06
申请号：US17406442
申请日：2021-08-19
Applicant: Canon Kabushiki Kaisha
Inventor： Masanobu Tanaka , Oki Kitagawa , Koichi Kakubari , Hiroto Ito
CPC classification number: G03G15/2028 , G03G21/203
Abstract: According to one aspect of the present invention, an image forming apparatus includes a fixing unit comprising a fixing member configured to fix a toner image to a recording material, and a pressure member configured to form a first nip portion, a conveyance portion configured to form a second nip portion, and a control unit configured to execute, a conveyance mode of conveying the recording material so that the recording material is not looped between the first nip portion and the second nip portion prior to a predetermined timing during passing of the recording material of the first nip portion, and conveying the recording material so that the recording material is looped toward the pressure member from the predetermined timing until a trailing edge of the recording material has passed through the first nip portion.
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公开(公告)号：US20190025736A1
公开(公告)日：2019-01-24
申请号：US16027032
申请日：2018-07-03
Applicant: CANON KABUSHIKI KAISHA
Inventor： Keita Ishiguro , Masanobu Tanaka , Suguru Takeuchi , Asuna Fukamachi , Oki Kitagawa , Yasuharu Toratani
IPC: G03G15/20 , G03G21/14 , G03G15/00 , B41J29/377
CPC classification number: G03G15/20 , B41J29/377 , G03G15/5083 , G03G15/6552 , G03G15/6573 , G03G21/14
Abstract: An image forming apparatus includes an image forming unit, a fixing unit, a sheet discharge unit to stack sheets, an acquisition unit, and a controller. The fixing unit fixes a toner image formed on a sheet by the image forming unit. The acquisition unit acquires information corresponding to a maximum toner application amount per unit area of the formed toner image. The controller controls the number of image formations on the sheets per unit time based on the acquired information. The controller executes a first job with a first number of image formations on the sheets per unit time during a period from an Lth sheet to an Mth sheet in the first job, and executes a second job with a second and smaller number of image formations on the sheets per unit time during the period from the Lth to the Mth sheet in the second job.
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公开(公告)号：US09952544B2
公开(公告)日：2018-04-24
申请号：US15367632
申请日：2016-12-02
Applicant: CANON KABUSHIKI KAISHA
Inventor： Masanobu Tanaka , Yasuharu Chiyoda , Oki Kitagawa , Asuna Fukamachi
CPC classification number: G03G15/5016 , G03G15/5058 , G03G2215/0129 , H04N1/00037 , H04N1/00058 , H04N1/00082 , H04N1/00915 , H04N2201/0091
Abstract: An image forming apparatus includes an image forming portion for forming an image, a human presence sensor for detecting presence of a human body adjacent the apparatus, and a controller capable of executing an adjustment process operation for the image forming portion when a first predetermined number of prints are produced. When the human presence sensor detects a human body in the neighborhood of the apparatus, the execution of the adjustment process operation is deferred to reduce the waiting time necessitated by the adjustment operation, but if a second predetermined number of prints are produced, the image forming operation of the image forming portion is interrupted, and the deferred adjustment process is executed.
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公开(公告)号：US09392642B2
公开(公告)日：2016-07-12
申请号：US13728010
申请日：2012-12-27
Applicant: CANON KABUSHIKI KAISHA
Inventor： Masanobu Tanaka , Oki Kitagawa , Shigeaki Takada , Akiyoshi Shinagawa , Hiroki Kawai
CPC classification number: H05B1/00 , G03G15/2025 , G03G15/2039 , G03G15/2064 , H05B1/0241 , H05B3/0095
Abstract: An image heating apparatus includes: an image heating roller in a nip; a nip forming member; a heating roller rubbing roller; a moving mechanism for moving the rubbing roller between a spaced position and a rubbing position; and a controller for executing operations in first and second modes. In the first mode, the heating roller is rotated with the rubbing roller in the spaced position and the heating roller in contact with the nip forming member with a target temperature of the heating roller higher than that of the nip forming member. In the second mode, the rubbing roller is contacted with the heating roller, rubbing the surface of the heating roller. The temperature difference in the first mode between the target temperature of the heating roller and that of the nip forming member is larger than the temperature difference when the toner image is heated by the nip.
Abstract translation: 图像加热装置包括：辊隙中的图像加热辊; 辊隙形成构件; 加热辊摩擦辊; 移动机构，用于在间隔位置和摩擦位置之间移动摩擦辊; 以及用于在第一和第二模式中执行操作的控制器。 在第一模式中，加热辊随着摩擦辊在间隔位置旋转，加热辊与辊隙形成部件接触，加热辊的目标温度高于辊隙形成部件的目标温度。 在第二模式中，摩擦辊与加热辊接触，摩擦加热辊的表面。 加热辊的目标温度和辊隙形成部件的目标温度之间的第一模式中的温度差大于通过辊隙加热调色剂图像时的温度差。
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公开(公告)号：US09372450B2
公开(公告)日：2016-06-21
申请号：US14716279
申请日：2015-05-19
Applicant: CANON KABUSHIKI KAISHA
Inventor： Oki Kitagawa , Akiyoshi Shinagawa , Masanobu Tanaka
IPC: G03G15/20
CPC classification number: G03G15/205 , G03G15/2017 , G03G15/2032
Abstract: An image forming apparatus includes: heating and pressing rollers for fixing a toner image; a contacting and spacing portion for contacting and spacing between the rollers; an air feeder for cooling the pressing roller during a job; a guide for the sheet having been subjected to an image fixing process; an acquiring portion for acquiring the temperature of the guide: and an executing portion for executing a warming-up process of the heating roller and the pressing roller to raise the temperatures of the heating roller and the pressing roller. The executing portion controls the contacting and spacing portion and the air feeder so that the air is fed toward the guide through between the heating roller and the pressing roller at least in a part of the warming-up process, when the temperature is lower than a predetermined temperature upon activation of a main voltage source.
Abstract translation: 图像形成装置包括：加热和加压辊，用于固定调色剂图像; 用于在辊之间接触和间隔的接触和间隔部分; 用于在作业期间冷却加压辊的空气供给器; 用于已经进行图像定影处理的纸张的引导件; 用于获取引导件的温度的获取部分以及用于执行加热辊和加压辊的预热过程以提高加热辊和加压辊的温度的执行部分。 执行部分控制接触和间隔部分和空气供给器，使得至少在预热过程的一部分中，当温度低于一个温度时，空气通过加热辊和加压辊之间的空气被馈送到引导件 激活主电压源时的预定温度。
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Patent Agency Ranking
公开(公告)号：US20130206745A1
公开(公告)日：2013-08-15
申请号：US13728010
申请日：2012-12-27
Applicant: Canon Kabushiki Kaisha
Inventor： Masanobu Tanaka , Oki Kitagawa , Shigeaki Takada , Akiyoshi Shinagawa , Hiroki Kawai
IPC: H05B1/00
CPC classification number: H05B1/00 , G03G15/2025 , G03G15/2039 , G03G15/2064 , H05B1/0241 , H05B3/0095
Abstract: An image heating apparatus includes a image heating roller in a nip; a nip forming member; a heating roller rubbing roller; a moving mechanism for moving the rubbing roller between a spaced position and a rubbing position; and a controller for executing operations in first and second modes. In the first mode, the heating roller is rotated with the rubbing roller in the spaced position and the heating roller in contact with the nip forming member with a target temperature of the heating roller higher than that of the nip forming member. In the second mode, the rubbing roller is contacted with the heating roller rubbing the surface of the heating roller. The temperature difference in the first mode between the target temperature of the heating roller and that of the nip forming member is larger than the temperature difference when the toner image is heated by the nip.
Abstract translation: 图像加热装置包括辊隙中的图像加热辊; 辊隙形成构件; 加热辊摩擦辊; 移动机构，用于在间隔位置和摩擦位置之间移动摩擦辊; 以及用于在第一和第二模式中执行操作的控制器。 在第一模式中，加热辊随着摩擦辊在间隔位置旋转，加热辊与辊隙形成部件接触，加热辊的目标温度高于辊隙形成部件的目标温度。 在第二模式中，摩擦辊与摩擦加热辊表面的加热辊接触。 加热辊的目标温度和辊隙形成部件的目标温度之间的第一模式中的温度差大于通过辊隙加热调色剂图像时的温度差。
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公开(公告)号：US20200081382A1
公开(公告)日：2020-03-12
申请号：US16560484
申请日：2019-09-04
Applicant: CANON KABUSHIKI KAISHA
Inventor： Masayuki Tamaki , Hiroto Ito , Oki Kitagawa
Abstract: An image forming apparatus includes an image forming portion, an image heating apparatus including an image heating unit, a rotatable pressing roller, and an information storing portion; a reading portion; a counter portion; a display portion; and a controller. The controller controls the counter portion so that a) when the image heating apparatus mounted is exchanged with an image heating apparatus including a new image heating unit, on the basis of information of the information storing portion, the count value of the image heating apparatus, the count value of the image heating unit and the count value of the rotatable pressing member are reset, and b) when only the image heating unit mounted is exchanged with a new one, the count value of the image heating unit is reset and the count value of the rotatable pressing member is not reset.
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公开(公告)号：US20180150004A1
公开(公告)日：2018-05-31
申请号：US15882184
申请日：2018-01-29
Applicant: CANON KABUSHIKI KAISHA
Inventor： Masanobu Tanaka , Oki Kitagawa , Akiyoshi Shinagawa
IPC: G03G15/20
CPC classification number: G03G15/2075 , G03G15/2017 , G03G15/2025 , G03G15/2028
Abstract: An image forming apparatus includes an image forming portion forming a toner image on a sheet, a rotatable heating member and a rotatable pressing member for fixing, at a nip, the toner image formed on the sheet by the image forming portion, an executing portion for executing a cleaning mode for cleaning the rotatable heating member by introducing, into the nip, the sheet on which a predetermined toner image is formed by the image forming portion, a re-introducing mechanism for re-introducing the sheet, into the nip, which has passed through the nip and then has been turned upside down, and a shifting mechanism for shifting a sheet position so that when a single sheet is introduced twice into the nip in the cleaning mode by using the re-introducing mechanism, positional relationships of a first-time sheet and a second-time sheet relative to the rotatable heating member with respect to a widthwise direction of the rotatable heating member are made different from each other.
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公开(公告)号：US20150338794A1
公开(公告)日：2015-11-26
申请号：US14716279
申请日：2015-05-19
Applicant: CANON KABUSHIKI KAISHA
Inventor： Oki Kitagawa , Akiyoshi Shinagawa , Masanobu Tanaka
IPC: G03G15/20
CPC classification number: G03G15/205 , G03G15/2017 , G03G15/2032
Abstract: An image forming apparatus includes heating and pressing rollers for fixing a toner image; a contacting and spacing portion for contacting and spacing between the rollers; an air feeder for cooling the pressing roller during a job; a guide for the sheet having been subjected to an image fixing process; an acquiring portion for acquiring the temperature of the guide: and an executing portion for executing a warming-up process of the heating roller and the pressing roller to raise temperatures of the heating roller and the pressing roller, wherein the executing portion controls the contacting and spacing portion and the air feeder so that the air is fed toward the guide through between the heating roller and the pressing roller at least in a part of the warming-up process, when the temperature is lower than a predetermined temperature upon activation of a main voltage source.
Abstract translation: 图像形成装置包括用于固定调色剂图像的加热和加压辊; 用于在辊之间接触和间隔的接触和间隔部分; 用于在作业期间冷却加压辊的空气供给器; 用于已经进行图像定影处理的纸张的引导件; 用于获取引导件的温度的获取部分和执行部分，用于执行加热辊和加压辊的预热过程以升高加热辊和加压辊的温度，其中执行部分控制接触和 间隔部分和空气供给器，使得至少在预热过程的一部分中，当主体激活时，当温度低于预定温度时，空气通过加热辊和加压辊之间通过导向件供给 电压源。
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公开(公告)号：US20170160686A1
公开(公告)日：2017-06-08
申请号：US15367632
申请日：2016-12-02
Applicant: CANON KABUSHIKI KAISHA
Inventor： Masanobu Tanaka , Yasuharu Chiyoda , Oki Kitagawa , Asuna Fukamachi
IPC: G03G15/00
CPC classification number: G03G15/5016 , G03G15/5058 , G03G2215/0129 , H04N1/00037 , H04N1/00058 , H04N1/00082 , H04N1/00915 , H04N2201/0091
Abstract: An image forming apparatus includes an image forming portion for forming an image; a human presence sensor for detecting presence of a human body adjacent the apparatus, and a controller capable of executing an adjustment process operation for said image forming portion when a first predetermined number of prints are produced. When the human presence sensor detects a human body in the neighborhood of the apparatus, the execution of the adjustment process operation is deferred to reduce the waiting time necessitated by the adjustment operation, but a second predetermined number of prints are produced, the image forming operation of the image forming portion is interrupted, and the deferred adjustment process is executed.
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