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公开(公告)号：US20180120747A1
公开(公告)日：2018-05-03
申请号：US15784295
申请日：2017-10-16
Applicant: KYOCERA Document Solutions Inc.
Inventor： Kazuhiro NAKACHI
CPC classification number: G03G15/553 , G03G15/5004 , G03G15/5079 , G06F3/1229 , H04L29/08567
Abstract: An image forming apparatus includes a controller, a transmitter, a receiver, and an input receiving device. Upon the controller detecting a replacement unit that needs to be replaced, the transmitter transmits, to an external device, unit information indicating the replacement unit. The receiver receives, from the external device via a network, replacement procedure information of the replacement unit detected by the controller and identification information of a worker who is to replace the replacement unit. Upon the input receiving device receiving input of identification information that matches the identification information of the worker received by the receiver, the controller shifts an operation state of the image forming apparatus from a normal power supply mode to a unit replacement mode in which power is supplied only to predetermined components of the image forming apparatus other than the replacement unit.
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公开(公告)号：US20210041802A1
公开(公告)日：2021-02-11
申请号：US16985151
申请日：2020-08-04
Applicant: KYOCERA Document Solutions Inc.
Inventor： Tamotsu SHIMIZU , Mitsuhiro HASHIMOTO , Takahiro OKUBO , Kazuhiro NAKACHI , Shiro KANEKO
Abstract: An image forming apparatus includes an image forming portion, a high-voltage generation circuit, a current detection portion and a control portion. The image forming portion includes an image carrying member, a charging device, an exposure device and a developing device which includes a developer carrying member for carrying a developer including a carrier and a toner. The control portion can perform a development ghost prediction mode that includes a step of measuring the amount of charge of the toner within the developing device at the time of non-image formation, a step of measuring, as a carrier current, the direct-current component of a development current when the amount of development of the toner is 0 [mg/cm2] and a step of estimating the level of occurrence of development ghost and the cause of occurrence based on the amount of charge of the toner and the carrier current which are measured.
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公开(公告)号：US20210041808A1
公开(公告)日：2021-02-11
申请号：US16984788
申请日：2020-08-04
Applicant: KYOCERA Document Solutions Inc.
Inventor： Tamotsu SHIMIZU , Takahiro OKUBO , Mitsuhiro HASHIMOTO , Kazuhiro NAKACHI , Shiro KANEKO
Abstract: An image forming apparatus includes an image forming portion, a high-voltage generation circuit, a current detection portion and a control portion. The image forming portion includes an image carrying member, a charging device, an exposure device and a developing device which includes a developer carrying member for carrying a two-component developer. The control portion can perform a transfer memory prediction mode that includes a step of estimating, when a first reference image is formed, the level of occurrence of transfer memory based on the direct-current component of a development current flowing through the developer carrying member and a step of measuring, when the measured direct-current component of the development current is larger than a predetermined value, the amount of charge of the toner within the developing device and estimating the cause of occurrence of the transfer memory based on the measured amount of charge of the toner.
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公开(公告)号：US20160252852A1
公开(公告)日：2016-09-01
申请号：US15054365
申请日：2016-02-26
Applicant: KYOCERA Document Solutions Inc.
Inventor： Kazuhiro NAKACHI
CPC classification number: G03G15/205 , G03G2215/0132
Abstract: An image forming apparatus includes an image forming unit, a fixing unit, a warming heater that heats a photoconductor drum, a fixing heater driving unit that turns a fixing heater on and off, a warming heater driving unit that turns the warming heater on and off, a mode transition unit that shifts an image forming operation mode, in which the image forming unit performs an image forming operation, to a sleep mode when a first period has elapsed after the image forming operation mode is finished, and a processor that turns off the fixing heater when the first period has elapsed after the image forming operation mode is finished and turns on the warming heater when a second period longer than the first period has elapsed after the image forming operation mode is finished.
Abstract translation: 图像形成装置包括图像形成单元，定影单元，加热感光鼓的加热加热器，打开和关闭定影加热器的定影加热器驱动单元，使加热加热器打开和关闭的加热加热器驱动单元 模式转换单元，其中图像形成单元执行图像形成操作的图像形成操作模式在图像形成操作模式完成之后经过第一时间段时将其移动到休眠模式，并且处理器关闭 在图像形成操作模式完成之后经过第一时间段的定影加热器，并且在图像形成操作模式结束之后经过长于第一时间段的第二周期之后接通加热加热器。
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Patent Agency Ranking
5.发明公开公开(公告)号：US20240011769A1
公开(公告)日：2024-01-11
申请号：US18255846
申请日：2021-11-29
Applicant: KYOCERA Document Solutions Inc.
Inventor： Koji SATO , Kazuhiro NAKACHI , Rui HAMABE , Takuya MIYAMOTO
CPC classification number: G01B11/25 , G06T7/70 , H04N1/00734 , H04N1/00726 , H04N1/00755 , G06T2207/30176 , H04N2201/0094 , H04N1/00771
Abstract: A sheet identification device includes a light irradiation portion. When forming an identification image, the light irradiation portion projects first pattern light (P11) and second pattern light (P12) having different dependences on a fiber direction of a surface of a sheet on an identification region (R1). The identification image is an image of the identification region (R1) of the surface of the sheet on which image formation or image reading is performed, which is used for identifying the fiber direction of the surface of the sheet.
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公开(公告)号：US20210149320A1
公开(公告)日：2021-05-20
申请号：US17098405
申请日：2020-11-15
Applicant: KYOCERA Document Solutions Inc.
Inventor： Tamotsu SHIMIZU , Takahiro OKUBO , Yohei WAKASA , Kazuhiro NAKACHI
Abstract: Provided is an image forming apparatus having a simple configuration capable of measuring a toner current included in a developing current and accurately calculating a toner charge amount based on the measurement result. The developing device has a developer carrier that carries a two-component developer including a magnetic carrier and toner. The density detecting device detects the density of the toner image. The current detecting unit detects a DC component of a developing current that flows when a developing voltage is applied to the developer carrier. The control unit, in a state in which the image carrier is rotated at two or more different linear speeds during non-image formation, forms the same reference image on the image carrier by the developing device, and estimates the toner charge amount based on the developing current when the reference image is formed and the density of the reference image.
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公开(公告)号：US20200026219A1
公开(公告)日：2020-01-23
申请号：US16510255
申请日：2019-07-12
Applicant: KYOCERA Document Solutions Inc.
Inventor： Kazuhiro NAKACHI , Satoshi SUNAYAMA
IPC: G03G15/08
Abstract: A mode control section forms a plurality of reference toner images having different densities on a photosensitive drum, where the frequency of an alternating-current voltage of a development bias is varied with a potential difference between direct-current voltages of a development roller and the photosensitive drum maintained constant, generates a reference straight line indicating a relationship between a toner amount of each reference toner image obtained by converting the density of the measured reference toner image into weight, and a representative value of current values of a development current measured during formation of the reference toner image, and acquires the amount of electrostatic charge of toner using the reference straight line.
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8.发明申请公开(公告)号：US20180373194A1
公开(公告)日：2018-12-27
申请号：US15952517
申请日：2018-04-13
Applicant: KYOCERA Document Solutions Inc.
Inventor： Kazuhiro NAKACHI
IPC: G03G21/00
Abstract: Provided is an inexpensive image forming apparatus capable of monitoring the generating state of various powders. The image forming apparatus includes a minute-particle-measuring device, a toner-particles-detecting air duct, a paper dust-detecting air duct, and blower fans. The minute-particle-measuring device detects the concentration of minute particles in air. The toner-particle-detecting air duct is an air duct leading from the image forming unit to the minute-particle-measuring device. The paper-dust-detecting air duct is an air duct leading from the paper-conveying path to the minute-particle-measuring device. The blower fans are respectively provided in the toner-particle-detecting air duct and the paper-dust-detecting air duct, and generate airflow that flows toward the minute-particle-measuring device side. The blower fans in the toner-particle-detecting air duct and in the paper-dust-detecting air duct are switched.
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公开(公告)号：US20170153595A1
公开(公告)日：2017-06-01
申请号：US15362960
申请日：2016-11-29
Applicant: KYOCERA Document Solutions Inc.
Inventor： Kazuhiro NAKACHI
IPC: G03G21/00
CPC classification number: G03G21/10 , G03G21/105 , G03G21/203 , G03G21/206 , G03G2215/0132
Abstract: An image forming apparatus is provided with a printing portion, a waste toner collection portion that includes a conveyance member that is driven by a motor, and conveys waste toner, thereby to collect the waste toner in a waste toner container, a current detection portion for detecting a motor current value, a fan that discharges scattering toner, and a control portion. In driving the fan, the control portion detects a value of the motor current value and sets rotation speed of the fan so that the larger said detected value of the motor current value, the higher the rotation speed.
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