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公开(公告)号：US12111597B2
公开(公告)日：2024-10-08
申请号：US18366961
申请日：2023-08-08
Applicant: Konica Minolta, Inc.
Inventor： Wataru Watanabe , Ryoei Ikari
CPC classification number: G03G15/556 , G03G15/0849 , G03G2215/0888
Abstract: The image forming apparatus includes an image bearing member, a developing section, and a controller that functions as a sign detector, a charge amount measurement section, and a charge amount adjuster. On the image bearing member, an electrostatic latent image is formed based on image data. The developing section contains a developer, and develops the electrostatic latent image formed on the image bearing member with the developer to form a toner image. The sign detector detects a sign that the charge amount of the developer contained in the developing section changes. The charge amount measurement section measures the charge amount of the developer in accordance with the detection result by the sign detector. The charge amount adjuster adjusts the charge amount of the developer according to the measurement result by the charge amount measurement section.
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公开(公告)号：US20160378038A1
公开(公告)日：2016-12-29
申请号：US15172238
申请日：2016-06-03
Applicant: Konica Minolta, Inc.
Inventor： Hiroshi MORIMOTO , Wataru Watanabe , Shunichi Takaya , Kei Okamura
IPC: G03G15/00
CPC classification number: G03G15/556 , G03G15/5058 , G03G2215/00029
Abstract: An image forming apparatus includes: an image forming unit including a rotating member; a rotation position detecting unit that detects a rotation position of the rotating member; an image density detecting unit that detects density of an image; an image information analysis unit that analyzes image information; a density profile management unit that manages a density profile; a correction data generation unit that generates correction data; a density correction unit that performs density correction; and a density correction control unit that sets a density correction level, wherein when the density correction level is set at reference accuracy, the density correction unit corrects density, and when the density correction level is set at accuracy higher than the reference accuracy, the density profile management unit forms a corrective patch image and generates a new density profile, the correction data generation unit updates the correction data, and the density correction unit corrects density.
Abstract translation: 图像形成装置包括：图像形成单元，包括旋转构件; 旋转位置检测单元，其检测旋转构件的旋转位置; 图像浓度检测单元，其检测图像的浓度; 分析图像信息的图像信息分析单元; 密度分布管理单元，其管理密度分布; 校正数据生成单元，生成校正数据; 密度校正单元，其进行密度校正; 以及浓度校正控制单元，其设定浓度校正水平，其中当以参考精度设置浓度校正水平时，浓度校正单元校正浓度，并且当浓度校正水平被设置为高于参考精度的精度时，密度 简档管理单元形成校正补丁图像并生成新的密度分布，校正数据生成单元更新校正数据，并且密度校正单元校正密度。
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公开(公告)号：US10203642B2
公开(公告)日：2019-02-12
申请号：US15724761
申请日：2017-10-04
Applicant: Konica Minolta, Inc.
Inventor： Hiroki Shibata , Wataru Watanabe , Keiki Katsumata , Natsuko Kawai , Kazuhiro Saito , Hiroshi Morimoto
Abstract: An image forming apparatus includes a development current detector that detects an actual measurement value of a development current, a development current calculator that calculates a provisional calculation value of a development current based on an image formation condition, and an image-defect determiner that determines whether or not an image defect occurs, based on the actual measurement value of the development current detected by the development current detector and the provisional calculation value of the development current calculated by the development current calculator.
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公开(公告)号：US10459392B2
公开(公告)日：2019-10-29
申请号：US16270179
申请日：2019-02-07
Applicant: Konica Minolta, Inc.
Inventor： Takenobu Kimura , Shota Sakurai , Tomohiro Kawasaki , Wataru Watanabe , Ryoei Ikari
Abstract: An image forming apparatus includes: an image carrier that carries a toner image; a developing part that accommodates two-component developer containing toner and a carrier, and supplies the toner to the image carrier; a transferor that transfers the toner image on the image carrier onto paper; a cleaning member that removes the toner remaining on the image carrier; and a hardware processor that controls toner discharge operation in the developing part according to a toner discharge condition, in which the hardware processor sets the toner discharge condition so that a replacement time of the cleaning member overlaps with a replacement time of another consumable.
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公开(公告)号：US20190033750A1
公开(公告)日：2019-01-31
申请号：US16041231
申请日：2018-07-20
Applicant: Konica Minolta, Inc.
Inventor： Shota Sakurai , Takenobu Kimura , Tomohiro Kawasaki , Wataru Watanabe , Ryoei Ikari
CPC classification number: G03G15/0887 , G03G15/02 , G03G15/0856 , G03G15/0865 , G03G15/2028 , G03G15/556 , G03G15/757
Abstract: A developing device includes: a developing roller that carries a developer; a developing tank that supplies the developing roller with the developer replenished from a replenishing port; a discharger that has a discharge port connecting to the developing tank and discharges the developer from the developing tank; a supply amount acquirer that acquires a supply amount of the developer to be supplied to the developing tank; a discharge amount acquirer that acquires a discharge amount of the developer to be discharged through the discharge port; a developer amount adjuster that adjusts an amount of the developer in the developing tank; and a hardware processor that controls the developer amount adjuster to adjust the amount of the developer in the developing tank to a value within a predetermined range, in accordance with the acquired supply amount and the acquired discharge amount of the developer.
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Patent Agency Ranking
公开(公告)号：US09915905B2
公开(公告)日：2018-03-13
申请号：US15172238
申请日：2016-06-03
Applicant: Konica Minolta, Inc.
Inventor： Hiroshi Morimoto , Wataru Watanabe , Shunichi Takaya , Kei Okamura
IPC: G03G15/00
CPC classification number: G03G15/556 , G03G15/5058 , G03G2215/00029
Abstract: An image forming apparatus includes: an image forming unit including a rotating member; a rotation position detecting unit that detects a rotation position of the rotating member; an image density detecting unit that detects density of an image; an image information analysis unit that analyzes image information; a density profile management unit that manages a density profile; a correction data generation unit that generates correction data; a density correction unit that performs density correction; and a density correction control unit that sets a density correction level, wherein when the density correction level is set at reference accuracy, the density correction unit corrects density, and when the density correction level is set at accuracy higher than the reference accuracy, the density profile management unit forms a corrective patch image and generates a new density profile, the correction data generation unit updates the correction data, and the density correction unit corrects density.
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公开(公告)号：US09606489B2
公开(公告)日：2017-03-28
申请号：US15056036
申请日：2016-02-29
Applicant: KONICA MINOLTA, INC.
Inventor： Shunichi Takaya , Hiroshi Morimoto , Wataru Watanabe , Kei Okamura
IPC: G03G15/00
CPC classification number: G03G15/556 , G03G15/5058
Abstract: An image forming apparatus uses a first developer conveyance amount and a first correction amount calculated respectively in a first state, a second developer conveyance amount and a second correction amount calculated respectively in a second state in which the developer conveyance amount is smaller than the developer conveyance amount of the first state, and a third developer conveyance amount detected in a third state in which the developer conveyance amount is smaller than the developer conveyance amount of the first state and is larger than the developer conveyance amount of the second state to calculate a third correction amount for correcting density unevenness of the toner image in the third state, and perform control to correct the density unevenness of the toner image based on the calculated third correction amount.
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公开(公告)号：US10401761B2
公开(公告)日：2019-09-03
申请号：US16041231
申请日：2018-07-20
Applicant: Konica Minolta, Inc.
Inventor： Shota Sakurai , Takenobu Kimura , Tomohiro Kawasaki , Wataru Watanabe , Ryoei Ikari
Abstract: A developing device includes: a developing roller that carries a developer; a developing tank that supplies the developing roller with the developer replenished from a replenishing port; a discharger that has a discharge port connecting to the developing tank and discharges the developer from the developing tank; a supply amount acquirer that acquires a supply amount of the developer to be supplied to the developing tank; a discharge amount acquirer that acquires a discharge amount of the developer to be discharged through the discharge port; a developer amount adjuster that adjusts an amount of the developer in the developing tank; and a hardware processor that controls the developer amount adjuster to adjust the amount of the developer in the developing tank to a value within a predetermined range, in accordance with the acquired supply amount and the acquired discharge amount of the developer.
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公开(公告)号：US10375254B2
公开(公告)日：2019-08-06
申请号：US15784602
申请日：2017-10-16
Applicant: Konica Minolta, Inc.
Inventor： Natsuko Minegishi , Wataru Watanabe , Hiroshi Morimoto , Keiki Katsumata , Kazuhiro Saito , Hiroki Shibata , Daiki Watanabe
Abstract: An image forming apparatus includes a plurality of image formers each capable of forming, on a sheet, an overlap image and a non-overlap image, a fixer that fixes, on the sheet, a whole image composed of the overlap images and the non-overlap images, and a hardware processor that controls each of the plurality of image formers such that a difference in image at a boundary between the overlap image and the non-overlap image is reduced in the whole image.
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公开(公告)号：US09964897B2
公开(公告)日：2018-05-08
申请号：US15618538
申请日：2017-06-09
Applicant: Konica Minolta, Inc.
Inventor： Kazuteru Ishizuka , Hiroshi Morimoto , Wataru Watanabe , Tatsuya Furuta , Shota Sakurai
IPC: G03G15/09 , G03G15/095 , G03G21/16
CPC classification number: G03G15/095 , G03G15/09 , G03G15/0921 , G03G21/1647 , G03G2215/0648
Abstract: A developing device includes a first developing roller, a second developing roller, a first end portion configured to restrict the amount of developer on the second developing roller, a restriction member, and a collecting roller configured to collect developer on the first developing roller. The second end portion is located at a position where magnetic force interference with a magnetic force generated by the second developing roller and the collecting roller is not caused.
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