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公开(公告)号：US10372072B2
公开(公告)日：2019-08-06
申请号：US15635604
申请日：2017-06-28
Applicant: Konica Minolta, Inc.
Inventor： Hideo Yamaki , Satoru Shibuya
Abstract: An image forming apparatus provided with a conductive member to form an image on a sheet using a toner includes: a voltage acquisition portion configured to acquire a biased voltage value as a voltage value by applying a bias to the conductive member; an environment sensor configured to output an environment condition measurement value representing an internal environment condition; and a hardware processor configured to transform the biased voltage value acquired by the voltage acquisition portion into a virtual voltage value appearing in the conductive member as the biased voltage value under a standard environment condition, in which the environment condition has a predetermined standard condition, on the basis of the environment condition measurement value output from the environment sensor, and determine a service life of the conductive member on the basis of the virtual voltage value.
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公开(公告)号：US10338507B2
公开(公告)日：2019-07-02
申请号：US15793395
申请日：2017-10-25
Applicant: KONICA MINOLTA, INC.
Inventor： Hideo Yamaki , Satoru Shibuya
Abstract: Provided is an image forming apparatus capable of estimating lives of components more accurately than before. The image forming apparatus includes an ion conductive component, and a processor for estimating a life of the conductive component. The processor acquires an index value related to energization of the conductive component, and estimates the life of the conductive component based on the index value per unit time.
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公开(公告)号：US20180004141A1
公开(公告)日：2018-01-04
申请号：US15635604
申请日：2017-06-28
Applicant: Konica Minolta, Inc.
Inventor： Hideo Yamaki , Satoru Shibuya
IPC: G03G15/00
CPC classification number: G03G15/55 , G03G15/0266 , G03G15/065 , G03G15/1675 , G03G21/20
Abstract: An image forming apparatus provided with a conductive member to form an image on a sheet using a toner includes: a voltage acquisition portion configured to acquire a biased voltage value as a voltage value by applying a bias to the conductive member; an environment sensor configured to output an environment condition measurement value representing an internal environment condition; and a hardware processor configured to transform the biased voltage value acquired by the voltage acquisition portion into a virtual voltage value appearing in the conductive member as the biased voltage value under a standard environment condition, in which the environment condition has a predetermined standard condition, on the basis of the environment condition measurement value output from the environment sensor, and determine a service life of the conductive member on the basis of the virtual voltage value.
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公开(公告)号：US09851660B2
公开(公告)日：2017-12-26
申请号：US14947214
申请日：2015-11-20
Applicant: Konica Minolta, Inc.
Inventor： Hidetoshi Noguchi , Satoru Shibuya , Kazuyoshi Hara
CPC classification number: G03G15/1665 , G03G15/0131 , G03G15/161 , G03G15/6532 , G03G15/6535 , G03G2215/004 , G03G2215/0132
Abstract: An image forming apparatus has an image carrier that carries a toner image; a transfer member that is opposed to the image carrier, a transfer voltage being applied to the transfer member so that the toner image is transferred from the image carrier to a print medium passing between the transfer member and the image carrier; a first voltage application device that applies the transfer voltage to the transfer member; a separation member to which a separation voltage is applied so that the print medium is separated from the image carrier; a second voltage application device that applies the separation voltage to the separation member; a sensing device that senses an image density of the toner image; and a control section that controls a magnitude of the separation voltage based upon the image density of the toner image.
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5.发明授权公开(公告)号：US09599939B2
公开(公告)日：2017-03-21
申请号：US14561628
申请日：2014-12-05
Applicant: KONICA MINOLTA, INC.
Inventor： Satoru Shibuya
CPC classification number: G03G15/205 , G03G15/2039 , G03G15/231
Abstract: An image forming apparatus includes an image carrier to carry a toner image. A transfer unit transfers the toner image to a sheet. A fixing unit fixes the toner image on the sheet. The sheet with the image is discharged to a sheet discharge tray. A circular conveyance path turns over the sheet past the transfer unit and the fixing unit and passes the sheet through the transfer unit and the fixing unit again. A heat amount setting section sets an amount of heat applied by the fixing unit when fixing of the sheet is executed. In duplex printing, a first heat amount for fixing the toner image on a first side of the sheet is smaller than a reference heat amount for simplex printing whereas a second heat amount for fixing the toner image on a second side of the sheet is larger than the reference heat amount.
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Patent Agency Ranking
公开(公告)号：US09891561B2
公开(公告)日：2018-02-13
申请号：US15420624
申请日：2017-01-31
Applicant: Konica Minolta, Inc.
Inventor： Satoru Shibuya
CPC classification number: G03G15/1665 , G03G15/161 , G03G15/1675 , G03G15/5037 , G03G2215/0132
Abstract: An image forming device that forms an image by transferring a toner image formed by developing an electrostatic latent image formed on a photoreceptor from the photoreceptor to an intermediate transfer body by applying a transfer bias to a transfer member and putting the transfer member in contact with the intermediate transfer body. The device includes: a current supplier selectively supplying a first constant current and a second constant current to the transfer member; a first voltage acquirer acquiring a first voltage occurring between the transfer member and the intermediate transfer body while the transfer member is supplied with the first constant current; a second voltage acquirer acquiring a second voltage occurring between the transfer member and the photoreceptor while the transfer member is supplied with the second constant current; and a thickness acquirer acquiring a value indicating photoreceptor layer thickness of the photoreceptor by using the first and second voltages.
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7.发明授权Image forming apparatus including fan to generate air flow in conveyance path in sheet conveyance direction 有权图像形成装置包括风扇，以在纸张输送方向上的输送路径中产生空气流公开(公告)号：US09195213B2
公开(公告)日：2015-11-24
申请号：US14309734
申请日：2014-06-19
Applicant: KONICA MINOLTA, INC.
Inventor： Kazuyoshi Hara , Hidetoshi Noguchi , Satoru Shibuya , Takahiro Kuroda
CPC classification number: G03G21/206 , G03G15/6573 , G03G2215/00679
Abstract: An image forming apparatus includes an image carrier configured to carry a toner image. A transfer unit is configured to transfer the toner image on the image carrier onto a recording sheet. A fixing unit is configured to fix the toner image transferred at the transfer unit onto the recording sheet. Through a conveyance path, the recording sheet is conveyed from the transfer unit to the fixing unit. A conveyance guide member is disposed in the conveyance path on an image formation surface side of the recording sheet. A fan is configured to send air from the transfer unit to the conveyance path toward a gap defined between the conveyance guide member and the transfer unit so as to form a flow of air in the conveyance path from an upstream side to a downstream side in a conveyance direction of the recording sheet.
Abstract translation: 图像形成装置包括构造成承载调色剂图像的图像载体。 传送单元被配置为将图像载体上的调色剂图像转印到记录片材上。 固定单元构造成将转印单元上转印的调色剂图像固定在记录纸上。 通过输送路径，记录纸从传送单元传送到定影单元。 输送引导构件设置在记录纸的图像形成表面侧上的输送路径中。 风扇被构造成将空气从传送单元传送到输送路径，朝向在输送引导构件和转印单元之间限定的间隙，从而在输送路径中形成从上游侧到下游侧的空气流 记录纸的输送方向。
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公开(公告)号：US09091968B2
公开(公告)日：2015-07-28
申请号：US13887954
申请日：2013-05-06
Applicant: Konica Minolta, Inc.
Inventor： Kazuyoshi Hara , Takahiro Kuroda , Hidetoshi Noguchi , Satoru Shibuya
IPC: G03G15/16
CPC classification number: G03G15/1665 , G03G15/1675
Abstract: An image forming apparatus having: an image support that supports a toner image; a transfer member adapted to sandwich with the transfer member and the image support; a voltage application unit that applies a transfer bias voltage to the transfer member; a current detecting unit that detects transfer current flowing from the voltage application unit to the transfer material after transfer processing on the transfer material starts; and a control unit that sets an upper limit of transfer current on the basis of a value of the transfer current detected by the current detecting unit, and thereafter further acquires a transfer current value from the current detecting unit to control a transfer bias voltage generated by the voltage application unit, such that the transfer current value during transfer does not exceed the upper limit.
Abstract translation: 一种图像形成装置，具有：支撑调色剂图像的图像支持体; 转印构件，其适于与所述转印构件和所述图像载体夹层; 电压施加单元，向转印构件施加转印偏压; 电流检测单元检测在转印材料的转印处理之后开始从电压施加单元向转印材料流动的转印电流; 以及控制单元，其基于由电流检测单元检测到的转移电流的值来设定转移电流的上限，然后进一步从电流检测单元获取转移电流值，以控制由 电压施加单元，使得转印期间的转印电流值不超过上限。
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公开(公告)号：US20130294792A1
公开(公告)日：2013-11-07
申请号：US13887954
申请日：2013-05-06
Applicant: KONICA MINOLTA, INC.
Inventor： Kazuyoshi HARA , Takahiro Kuroda , Hidetoshi Noguchi , Satoru Shibuya
IPC: G03G15/16
CPC classification number: G03G15/1665 , G03G15/1675
Abstract: An image forming apparatus having: an image support that supports a toner image; a transfer member adapted to sandwich with the transfer member and the image support; a voltage application unit that applies a transfer bias voltage to the transfer member; a current detecting unit that detects transfer current flowing from the voltage application unit to the transfer material after transfer processing on the transfer material starts; and a control unit that sets an upper limit of transfer current on the basis of a value of the transfer current detected by the current detecting unit, and thereafter further acquires a transfer current value from the current detecting unit to control a transfer bias voltage generated by the voltage application unit, such that the transfer current value during transfer does not exceed the upper limit.
Abstract translation: 一种图像形成装置，具有：支撑调色剂图像的图像支持体; 转印构件，其适于与所述转印构件和所述图像载体夹层; 电压施加单元，向转印构件施加转印偏压; 电流检测单元检测在转印材料的转印处理之后开始从电压施加单元向转印材料流动的转印电流; 以及控制单元，其基于由电流检测单元检测到的转移电流的值来设定转移电流的上限，然后进一步从电流检测单元获取转移电流值，以控制由 电压施加单元，使得转印期间的转印电流值不超过上限。
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公开(公告)号：US10416600B2
公开(公告)日：2019-09-17
申请号：US16174794
申请日：2018-10-30
Applicant: Konica Minolta, Inc.
Inventor： Satoru Shibuya
Abstract: An image forming apparatus includes a member arranged in contact with or in proximity to an image carrier, a sensor for measuring an electrical characteristic value of the member, a power supply which switches from a first mode in which one of a constant current and a constant voltage is applied to the member to a second mode in which the other is applied to the member, a storage which stores first correspondence between an amount of use of the member in the first mode and the electrical characteristic value, and a hardware processor. The hardware processor obtains second correspondence between the electrical characteristic value measured with the sensor and the amount of use of the member in the first mode and predicts a serviceable period of the member when the power supply is switched to the second mode based on the first and the second correspondences.
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