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公开(公告)号：US10241461B2
公开(公告)日：2019-03-26
申请号：US15952517
申请日：2018-04-13
Applicant: KYOCERA Document Solutions Inc.
Inventor： Kazuhiro Nakachi
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：US20210149321A1
公开(公告)日：2021-05-20
申请号：US17098406
申请日：2020-11-15
Applicant: KYOCERA Document Solutions Inc.
Inventor： Tamotsu Shimizu , Mitsuhiro Hashimoto , Takahiro Okubo , Yohei Wakasa , Kazuhiro Nakachi
IPC: G03G15/06
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. A developing device has a developer carrier that carries a two-component developer including a magnetic carrier and toner. A developing voltage power supply applies a developing voltage obtained by superimposing an AC voltage on a DC voltage on the developer carrier. A control unit estimates a toner charge amount based on a toner current calculated by subtracting a carrier current from a developing current detected by a current detecting unit when a reference image is formed during non-image formation, and a toner developing amount calculated from the density of a reference image detected by a density detecting device.
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公开(公告)号：US10996585B2
公开(公告)日：2021-05-04
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：US20230137796A1
公开(公告)日：2023-05-04
申请号：US18050796
申请日：2022-10-28
Applicant: KYOCERA Document Solutions Inc.
Inventor： Yoshihiro Yamagishi , Tamotsu Shimizu , Kazunori Tanaka , Ryota Okui , Kazuhiro Nakachi
IPC: G03G15/00
Abstract: An image forming apparatus includes an image-carrying member, a first acquisition processing portion, and a second acquisition processing portion. An electrostatic latent image is formed on the image-carrying member. The first acquisition processing portion acquires the potential value of the image-carrying member. The second acquisition processing portion acquires the temperature value of the image-carrying member based on the potential value of the image-carrying member acquired by the first acquisition processing portion.
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公开(公告)号：US09841719B2
公开(公告)日：2017-12-12
申请号：US15362960
申请日：2016-11-29
Applicant: KYOCERA Document Solutions Inc.
Inventor： Kazuhiro Nakachi
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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Patent Agency Ranking
公开(公告)号：US08882102B2
公开(公告)日：2014-11-11
申请号：US14226718
申请日：2014-03-26
Applicant: KYOCERA Document Solutions Inc.
Inventor： Kazuhiro Nakachi
IPC: B65H1/18
CPC classification number: B65H1/18 , B65H1/14 , B65H7/02 , B65H2511/20 , B65H2511/30 , B65H2515/708 , B65H2553/21 , B65H2557/34 , B65H2220/01 , B65H2220/11 , B65H2220/03
Abstract: A multifunction peripheral includes: a moving device configured to move up a lift plate; a changing device configured to mechanically change a resistance value of a variable resistor depending upon a position of the lift plate; a mechanical switch; a connecting device configured to apply a predetermined DC voltage to the variable resistor when an upper end of one or more paper sheets placed on the lift plate or an upper end of the lift plate has reached a predetermined uppermost position in the paper feed cassette; a calculating device configured to calculate a remaining amount of paper sheets placed on the lift plate as a function of a DC voltage value output from the variable resistor; and a stopping device configured to stop upward movement of the lift plate using the DC voltage value output from the variable resistor.
Abstract translation: 一种多功能外围设备，包括：移动装置，其配置为向上移动升降板; 改变装置，被配置为根据所述提升板的位置机械地改变可变电阻器的电阻值; 机械开关; 连接装置，被配置为当放置在提升板上的一个或多个纸张的上端或提升板的上端已经到达供纸盒中的预定最上位置时，将可变电阻器施加预定的DC电压; 计算装置，被配置为根据从可变电阻器输出的直流电压值来计算放置在升降板上的剩余纸张量; 以及停止装置，其被配置为使用从可变电阻器输出的DC电压值来停止升降板的向上运动。
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公开(公告)号：US20140291918A1
公开(公告)日：2014-10-02
申请号：US14226718
申请日：2014-03-26
Applicant: KYOCERA Document Solutions Inc.
Inventor： Kazuhiro Nakachi
IPC: B65H1/18
CPC classification number: B65H1/18 , B65H1/14 , B65H7/02 , B65H2511/20 , B65H2511/30 , B65H2515/708 , B65H2553/21 , B65H2557/34 , B65H2220/01 , B65H2220/11 , B65H2220/03
Abstract: A multifunction peripheral includes: a moving device configured to move up a lift plate; a changing device configured to mechanically change a resistance value of a variable resistor depending upon a position of the lift plate; a mechanical switch; a connecting device configured to apply a predetermined DC voltage to the variable resistor when an upper end of one or more paper sheets placed on the lift plate or an upper end of the lift plate has reached a predetermined uppermost position in the paper feed cassette; a calculating device configured to calculate a remaining amount of paper sheets placed on the lift plate as a function of a DC voltage value output from the variable resistor; and a stopping device configured to stop upward movement of the lift plate using the DC voltage value output from the variable resistor.
Abstract translation: 一种多功能外围设备，包括：移动装置，其配置为向上移动升降板; 改变装置，被配置为根据所述提升板的位置机械地改变可变电阻器的电阻值; 机械开关; 连接装置，被配置为当放置在提升板上的一个或多个纸张的上端或提升板的上端已经到达供纸盒中的预定最上位置时，将可变电阻器施加预定的DC电压; 计算装置，被配置为根据从可变电阻器输出的直流电压值来计算放置在升降板上的剩余纸张量; 以及停止装置，其被配置为使用从可变电阻器输出的DC电压值来停止升降板的向上运动。
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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
Applicant: KYOCERA Document Solutions Inc.
Inventor： Ryota Okui , Yoshihiro Yamagishi , Tamotsu Shimizu , Kazuhiro Nakachi , Kazunori Tanaka
CPC classification number: G03G15/553 , G03G15/0266 , G03G15/5037
Abstract: 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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公开(公告)号：US20230137743A1
公开(公告)日：2023-05-04
申请号：US18050790
申请日：2022-10-28
Applicant: KYOCERA Document Solutions Inc.
Inventor： Ryota Okui , Yoshihiro Yamagishi , Tamotsu Shimizu , Kazuhiro Nakachi , Kazunori Tanaka
Abstract: 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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公开(公告)号：US20230137321A1
公开(公告)日：2023-05-04
申请号：US18050783
申请日：2022-10-28
Applicant: KYOCERA Document Solutions Inc.
Inventor： Kazunori Tanaka , Yoshihiro Yamagishi , Tamotsu Shimizu , Kazuhiro Nakachi , Ryota Okui
Abstract: An image forming apparatus includes a developing member, a first detection processing portion, and an acquisition processing portion. The developing member conveys developer to a facing portion between the developing member and the image-carrying member. The first detection processing portion detects a first development current for each of a plurality of specific voltages with different DC voltage values applied to the developing member, the first development current flowing, in response to application of the specific voltages, through the facing portion including the developer and a specific exposed area, formed by the light emitting portion, on the image-carrying member. The acquisition processing portion acquires a potential value of the specific exposed area based on the DC voltage values of the specific voltages and current values of the first development current, detected by the first detection processing portion, corresponding to the respective specific voltages.
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