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11.发明授权公开(公告)号：US11556074B2
公开(公告)日：2023-01-17
申请号：US17210901
申请日：2021-03-24
摘要： An image forming apparatus includes: a development device which develops an electrostatic latent image formed on a photosensitive drum into a toner image; a charger which charges the photosensitive drum; a development power supply which applies a prescribed bias voltage to the development device; and a calculating section which calculates a surface potential of the photosensitive drum based on a development current flowing in the development device. The calculating section calculates, as the surface potential, a bias voltage at which a non-charging development current that flows in the development device in an uncharged state in which the charger has not charged the photosensitive drum is equal to a charging development current that flows in the development device in a charged state in which the charger has charged the photosensitive drum.
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12.发明授权公开(公告)号：US11487218B2
公开(公告)日：2022-11-01
申请号：US17362948
申请日：2021-06-29
摘要： An image forming apparatus includes an image carrier, a charging device, a developing device, a developing power source, a current measuring device, and a processor. On a surface of the image carrier, an electrostatic latent image is formed. The charging device electrically charges the image carrier. The developing device forms a toner image, by supplying toner to the image carrier and developing the electrostatic latent image formed on the image carrier. The developing power source applies a predetermined bias voltage to the developing device. The current measuring device measures a developing current flowing in the developing device. The processor acts, by executing a control program, as a calculator that calculates a surface potential of the image carrier, on a basis of the developing current measured by the measuring device.
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公开(公告)号：US11435677B2
公开(公告)日：2022-09-06
申请号：US17210390
申请日：2021-03-23
摘要： An image forming apparatus includes: a development device which develops an electrostatic latent image formed on a photosensitive drum into a toner image; a charger which charges the photosensitive drum; a development power supply which applies a bias voltage to the development device; a calculating section which calculates a surface potential of the photosensitive drum based on a development current flowing in the development device; and an estimating section which estimates a fogging toner amount. The fogging toner amount is an amount of toner moved due to fogging. When the fogging toner amount estimated by the estimating section is less than a prescribed threshold, the calculating section calculates a value of the bias voltage at which the development current stops flowing as the surface potential.
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公开(公告)号：US09804547B2
公开(公告)日：2017-10-31
申请号：US15265525
申请日：2016-09-14
IPC分类号： G03G15/20
CPC分类号： G03G15/206 , G03G15/2053 , G03G2215/2035
摘要： A fixing device includes a fixing belt rotatably located around a rotation axis, a pressure member rotatably located, and a pressing member. The pressure member is brought into pressure contact with the fixing belt to form a fixing nip. The pressing member includes a pressing surface that presses the fixing belt toward a side of the pressure member. The pressing surface includes a plane surface portion extending along a conveyance direction of a recording medium, and a curved surface portion located at a downstream side of the plane surface portion in the conveyance direction of the recording medium. The curved surface portion is curved along an outer peripheral surface of the pressure member. The curved surface portion has a curvature radius larger than a curvature radius of the outer peripheral surface of the pressure member before a deformation in association with a formation of the fixing nip.
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15.发明授权公开(公告)号：US09405245B2
公开(公告)日：2016-08-02
申请号：US14925396
申请日：2015-10-28
IPC分类号： G03G15/20
CPC分类号： G03G15/2053 , G03G15/2017 , G03G2215/2035
摘要： A fixing device includes a fixing belt, a pressuring member, a heat source, a pressing member, a heating stop device and a deformation preventing member. The deformation preventing member is configured to face an inner circumferential face of the fixing belt. In a state where the fixing belt is not broken in a circumferential direction, the fixing belt and the deformation preventing member are arranged at an interval, and when the fixing belt is broken in the circumferential direction, the fixing belt is deformed and comes into contact with the deformation preventing member so that the fixing belt is prevented from being deformed to a side far from the heating stop device.
摘要翻译： 固定装置包括定影带，加压构件，热源，按压构件，加热停止装置和变形防止构件。 防变形构件构成为面对定影带的内周面。 在定影带在圆周方向上不断裂的状态下，定影带和变形防止部件间隔设置，当定影带在圆周方向上断裂时，定影带变形并接触 与变形防止构件一起防止定影带变形到远离加热停止装置的一侧。
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公开(公告)号：US09400465B2
公开(公告)日：2016-07-26
申请号：US14933246
申请日：2015-11-05
IPC分类号： G03G15/20
CPC分类号： G03G15/2053 , G03G15/2017
摘要： A fixing device fixing an image on a recording medium includes a fixing belt rotatable around a first rotation axis, a pressuring member, a heat source body and a cover member. The pressuring member forms a nip part pressuring and making the recording medium pass through with the fixing belt. The heat source body is arranged inside the fixing belt and heats the fixing belt by emitting radiant heat. The cover member is arranged between the fixing belt and the heat source body and covers the heat source body. The nip part has a passing area where the recording medium passes through and a non-passing area outside the passing area in an axial direction. The cover member covers a part of the heat source body corresponding to the non-passing area and includes through holes formed so as to adjust surface temperature of the heat source body.
摘要翻译： 将图像固定在记录介质上的定影装置包括可围绕第一旋转轴线旋转的定影带，加压构件，热源主体和盖构件。 加压构件形成压合部，并使记录介质通过定影带。 热源体设置在定影带内部，并通过发射辐射热来加热定影带。 盖构件设置在定影带和热源体之间并覆盖热源体。 夹持部具有记录介质通过的通过区域和通过区域的轴向不通过区域。 盖构件覆盖与不通过区域对应的热源体的一部分，并且包括形成为调节热源体的表面温度的通孔。
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公开(公告)号：US09372457B2
公开(公告)日：2016-06-21
申请号：US14925474
申请日：2015-10-28
IPC分类号： G03G15/20
CPC分类号： G03G15/2053 , G03G15/2039 , G03G15/2064
摘要： A fixing device includes a fixing belt, a pressuring member, a heat source, a pressing member, a heating stop device, shape restricting members and biasing members. The fixing belt is provided to be rotatable around a rotation axis. The pressing member is provided to be rotatable and to come into pressure contact with the fixing belt so as to form a fixing nip. The heat source heats the fixing belt. The pressing member presses the fixing belt to a side of the pressuring member. The heating stop device faces an outer circumferential face of the fixing belt and to operate at an operating temperature so as to stop the heat source from heating the fixing belt. The shape restricting members are attached to both end parts of the fixing belt and restricts a shape of the fixing belt.
摘要翻译： 定影装置包括定影带，加压构件，热源，按压构件，加热停止装置，形状限制构件和偏置构件。 定影带设置成能够围绕旋转轴线旋转。 按压构件设置成可旋转并与定影带压力接触以形成定影夹持部。 热源加热定影带。 按压构件将定影带按压到加压构件的一侧。 加热停止装置面向定影带的外周面并在操作温度下操作，以便使热源停止加热定影带。 形状限制构件附接到定影带的两个端部，并限制定影带的形状。
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18.发明授权Developer case that suppresses clogging due to developer, developer replenishment unit having the same, and image forming apparatus having the same 有权抑制由显影剂堵塞的显影剂盒，具有该阻挡剂的显影剂补充单元，以及具有该堵塞的图像形成装置公开(公告)号：US08989634B2
公开(公告)日：2015-03-24
申请号：US13630718
申请日：2012-09-28
发明人： Kenichi Tamaki , Takahisa Nakaue , Tamotsu Shimizu , Ikuo Makie , Eiji Nimura , Koji Kuramashi , Masaki Hayashi , Yoshihiro Yamagishi
IPC分类号： G03G15/08
CPC分类号： G03G15/0891 , G03G15/0877
摘要： A developer case includes a main body, a first transportation portion, a first transportation member, a supply member, a discharge port, and a second transportation portion. The main body contains developer. The first transportation portion has a first region that receives developer from the main body and a second region that extends from the first region in a first direction. The first transportation member transports developer in the first direction. The supply member supplies developer to the first region. Developer is discharged through the discharge port. The second transportation portion has an inlet port communicating with the second region. Developer that has not been discharged through the discharge port is supplied to the second transportation portion through the inlet port. The second transportation portion transports developer in a second direction.
摘要翻译： 显影剂盒包括主体，第一输送部，第一输送部件，供给部件，排出口以及第二输送部。 主体包含开发者。 第一输送部分具有从主体接收显影剂的第一区域和从第一区域沿第一方向延伸的第二区域。 第一批运输工具运输开发商的第一个方向。 供应商向第一个地区供应开发商。 显影剂通过排放口排出。 第二输送部具有与第二区域连通的入口。 未通过排出口排出的显影剂通过入口供给到第二输送部。 第二输送部分沿第二方向输送显影剂。
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公开(公告)号：US20130315631A1
公开(公告)日：2013-11-28
申请号：US13899791
申请日：2013-05-22
IPC分类号： G03G15/08
CPC分类号： G03G15/0891 , G03G15/0893
摘要： A developing device includes a developing roller, a developer supply path, a developer conveyance path, a supply-side conveying member and an agitating-side conveying member. The developing roller is rotatably supported in the housing. The developer supply path is arranged along the developing roller. The developer conveyance path is arranged along the developer supply path. The supply-side conveying member is a conveying member arranged in the developer supply path and includes a first receiving portion arranged to face the communication path at an upstream side in the first direction and configured to receive the developer from the developer conveyance path, and has a hollow spiral shape at a side downstream of the first receiving portion. The agitating-side conveying member is a conveying member arranged in the developer conveyance path and includes a first transferring portion arranged to face the first receiving portion at a downstream side in the second direction.
摘要翻译： 显影装置包括显影辊，显影剂供给路径，显影剂输送路径，供给侧输送部件和搅拌侧输送部件。 显影辊可旋转地支撑在壳体中。 显影剂供应路径沿显影辊布置。 显影剂输送路径沿着显影剂供给路径布置。 供给侧传送部件是布置在显影剂供应路径中的传送部件，包括第一接收部，其布置成在第一方向的上游侧面对连通路径并且构造成从显影剂传送路径接收显影剂，并且具有 在第一接收部分的下游侧的中空螺旋形状。 搅拌侧输送构件是布置在显影剂输送路径中的输送构件，并且包括在第二方向的下游侧面对第一容纳部的第一转印部。
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公开(公告)号：US12038710B2
公开(公告)日：2024-07-16
申请号：US18050790
申请日：2022-10-28
CPC分类号： G03G15/553 , G03G15/0266 , G03G15/5037
摘要： An image forming apparatus includes first, second, and third acquisition processing portions. The first acquisition processing portion acquires the potential value of a charged area, charged by the charging member, on the image-carrying member. The second acquisition processing portion acquires a state value regarding the state of a surface layer of the image-carrying member based on the potential value of the charged area acquired by the first acquisition processing portion and the current value of a charging current flowing through the charging member during formation of the charged area. The third acquisition processing portion acquires the electrical resistance value of the transfer member based on the state value acquired by the second acquisition processing portion, the voltage value of a transfer voltage applied to the transfer member, and the current value of a transfer current flowing through the charged area in response to application of the transfer voltage.
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