公开(公告)号：US20230418191A1

公开(公告)日：2023-12-28

申请号：US18338010

申请日：2023-06-20

Applicant: KYOCERA Document Solutions Inc.

Inventor： Koji UNO ,  Keisuke OBA ,  Yasuhiro MICHISHITA

IPC: G03G15/16 ,  G03G15/00

CPC classification number: G03G15/1675 ,  G03G15/80 ,  G03G15/5054 ,  G03G15/1685 ,  G03G2215/1614 ,  G03G2215/1623

Abstract: An image forming apparatus includes an image carrying member, an intermediate transfer belt, a primary transfer roller, a first belt support roller, a secondary transfer roller, a second belt support roller, a current output portion, a current sensing portion, and a control portion. The current output portion passes across the secondary transfer roller a secondary transfer current as part of an output current. The current output portion and the second belt support roller are electrically connected together. The current sensing portion senses a leakage current passing from the first belt support roller via the intermediate transfer belt to the second belt support roller. The control portion sets the output current such that the secondary transfer current has a value given by subtracting a leakage current from the output current and keeps the voltage on the second belt support roller between −50 V and 50 V, inclusive.

公开(公告)号：US20240385553A1

公开(公告)日：2024-11-21

申请号：US18661185

申请日：2024-05-10

Applicant: KYOCERA Document Solutions Inc.

Inventor： Koji UNO ,  Keisuke OBA ,  Yasuhiro MICHISHITA

IPC: G03G15/16 ,  G03G15/01

Abstract: An image forming apparatus includes a plurality of image carriers, a charging device, an exposure device, a development device, and an intermediate transfer belt. The image carrier has a surface on which an amorphous silicon photosensitive layer is formed. The intermediate transfer belt is a plastic belt having a surface resistivity of 9.5 to 10.5 (log Ω/square). An offset amount of the primary transfer roller from the image carrier is 0 to 2 (mm), a contact surface pressure between the image carrier and the intermediate transfer belt is 0.5 to 1.5 (gf/mm2), and a charge density of primary transfer current that flows when the primary transfer voltage is applied to the primary transfer roller is 0.016 to 0.040 (μC/cm2).

公开(公告)号：US20200108630A1

公开(公告)日：2020-04-09

申请号：US16589439

申请日：2019-10-01

Applicant: KYOCERA Document Solutions Inc.

Inventor： Noriaki OZAWA ,  Hiroatsu TAMAI ,  Takeshi WATANABE ,  Hiroyuki UEDA ,  Yasuhiro MICHISHITA ,  Toyotsune INOUE ,  Naoto MIYAKOSHI ,  Yusuke TAKANO

IPC: B41J2/21 ,  B41J2/045 ,  B41J2/16

Abstract: An inkjet recording apparatus includes three or more recording heads. The recording heads contain different inks and eject the different inks sequentially on a recording medium. The different inks each contain a pigment. Of the different inks, an ink to be ejected first has the lowest pigment content ratio. Of the different inks, an ink to be ejected third and an ink to be subsequently ejected each have a pigment content ratio equal to or higher than that of the pigment contained in a corresponding one of inks to be precedently ejected. Of the different inks, an ink to be ejected second and an ink to be subsequently ejected each have a lower viscosity at 25° C. than a corresponding one of inks to be precedently ejected.

公开(公告)号：US20160231669A1

公开(公告)日：2016-08-11

申请号：US15040636

申请日：2016-02-10

Applicant: KYOCERA Document Solutions Inc.

Inventor： Yasuhiro MICHISHITA ,  Satoshi UEMURA

IPC: G03G15/16

CPC classification number: G03G15/657 ,  G03G15/1675

Abstract: An image forming apparatus includes an image carrier, a conveyance belt, a transfer roller, a suspension roller, and a conductive opposed member. The conveyance belt is in contact with the image carrier to form a nip and conveys a sheet via the nip position. A voltage of reversed polarity to a charge polarity of toner forming the toner image is applied to the transfer roller to transfer the toner image to the sheet at the nip position. A suspension roller suspends the conveyance belt at a separation position. The separation position is downstream with respect to the nip position in a sheet conveyance direction. The separation position is positioned where the sheet separates from the conveyance belt. The voltage of reversed polarity to the charge polarity of the toner is applied to the suspension roller. The conductive opposed member is arranged opposed to the suspension roller across the conveyance belt.

Abstract translation: 图像形成装置包括图像载体，输送带，转印辊，悬挂辊和导电性相对的构件。 输送带与图像载体接触以形成压区，并经由夹持位置输送片材。 将形成调色剂图像的调色剂图像的调色剂的电荷极性的反极性电压施加到转印辊上，以将调色剂图像转印到辊隙位置处的片材。 悬挂辊将输送带悬挂在分离位置。 分离位置相对于纸张输送方向上的辊隙位置是下游的。 分离位置位于片材与输送带分离的位置。 与调色剂的充电极性相反的极性电压被施加到悬挂辊。 导电对置构件布置成相对于悬挂辊跨过输送带。

公开(公告)号：US20240142899A1

公开(公告)日：2024-05-02

申请号：US18490578

申请日：2023-10-19

Applicant: KYOCERA Document Solutions Inc.

Inventor： Keisuke OBA ,  Koji UNO ,  Yasuhiro MICHISHITA

IPC: G03G15/16 ,  G03G15/18

CPC classification number: G03G15/1615 ,  G03G15/18 ,  G03G2215/0016

Abstract: The intermediate transfer unit includes: an endless intermediate transfer belt which is turned around while carrying a toner image on its outer circumferential surface; and a plurality of rollers on which the intermediate transfer belt is turnably stretched, wherein the intermediate transfer belt has, on its inner circumferential surface, an information recording area in which belt information has been recorded, and the intermediate transfer belt has a mark at a position in the outer circumferential surface where a positional relationship between the mark and the information recording area comes to a specified relationship.

公开(公告)号：US20230408947A1

公开(公告)日：2023-12-21

申请号：US18331662

申请日：2023-06-08

Applicant: KYOCERA Document Solutions Inc.

Inventor： Yasuhiro MICHISHITA ,  Keisuke OBA ,  Koji UNO

IPC: G03G15/01 ,  G03G15/045 ,  G03G15/16

CPC classification number: G03G15/0121 ,  G03G15/011 ,  G03G15/045 ,  G03G15/1605 ,  G03G15/1665 ,  G03G15/165

Abstract: An image forming apparatus includes a plurality of image forming portions, an intermediate transfer belt, a primary transfer member, a secondary transfer roller, a counter roller, and a charge eliminating device. The counter roller is pressed against the secondary transfer roller via an intermediate transfer belt to thereby form a secondary transfer nip portion. The charge eliminating device includes a charge eliminating needle that is disposed with an end part thereof pointing to a downstream side in a conveyance direction of the recording medium, and that is grounded, and a charge eliminating needle protection cover that has a guide surface that is opposed to the recording medium having passed through the secondary transfer nip portion. The guide surface is formed of a conductive material having a resistance value of 106Ω or lower, and is in a floating state.

公开(公告)号：US20140037344A1

公开(公告)日：2014-02-06

申请号：US13956594

申请日：2013-08-01

Applicant: KYOCERA DOCUMENT SOLUTIONS INC.

Inventor： Shinji YAMANE ,  Yasuhiro MICHISHITA

IPC: G03G15/16

CPC classification number: G03G15/1665 ,  G03G15/1675 ,  G03G15/168

Abstract: An image forming apparatus includes an image carrying member, a transport belt, a driving roller, a transferring member, a nip portion, and an applying portion. The transferring member makes contact with the inner circumferential surface of the transport belt to press the transport belt against the image carrying member. The nip portion is formed between the transport belt and the image carrying member by the pressure of the transferring member. The applying portion applies a bias to the transferring member. Application of the bias to the transferring member causes, at the nip portion, the toner image carried on the image carrying member to be transferred to the recording medium carried on the transport belt. Near the nip portion, a pair of support members are arranged which keeps both width-direction end parts of the transport belt in contact with the image carrying member.

Abstract translation: 图像形成装置包括图像承载构件，输送带，驱动辊，转印构件，夹持部和施加部。 传送构件与传送带的内圆周表面接触以将传送带压靠在图像承载构件上。 夹持部分通过转印部件的压力形成在输送带和图像承载部件之间。 施加部分向转印构件施加偏压。 将偏压施加到转印部件上会使承载在图像承载部件上的调色剂图像转印到传送带上的记录介质上。 在压合部附近，布置有保持传送带的宽度方向端部与图像承载部件接触的一对支撑部件。

公开(公告)号：US20230418205A1

公开(公告)日：2023-12-28

申请号：US18336835

申请日：2023-06-16

Applicant: KYOCERA Document Solutions Inc.

Inventor： Koji UNO ,  Keisuke OBA ,  Yasuhiro MICHISHITA

IPC: G03G15/00 ,  G03G15/16 ,  G03G15/08 ,  G03G15/01

CPC classification number: G03G15/80 ,  G03G15/162 ,  G03G15/0806 ,  G03G15/0131 ,  G03G15/5004 ,  G03G2215/00632

Abstract: An image forming apparatus includes an image carrying member, an intermediate transfer belt, a primary transfer roller, a first belt support roller, a secondary transfer roller, a second belt support roller, a current feeder, a controller, a current sensor, and a rectifier. The current sensor has a lead member. The rectifier shuts off a current passing from the second belt support roller to the ground if the voltage on the second belt support roller is less than a predetermined reference voltage. The controller controls the output current such that the secondary transfer current has a current value resulting from subtracting a leak current from the output current and, when the lead member is in a conducting state, keeps the voltage on the second belt support roller less than the reference voltage.

公开(公告)号：US20210070074A1

公开(公告)日：2021-03-11

申请号：US17013413

申请日：2020-09-04

Applicant: KYOCERA Document Solutions Inc.

Inventor： Kenichi SATAKE ,  Takeshi WATANABE ,  Hiroki SAKANE ,  Yasuhiro MICHISHITA ,  Masato USUI ,  Yuzuru YUASA ,  Yusuke TAMEKUNI ,  Shinobu OHATA ,  Naoto MIYAKOSHI ,  Shunsuke YAMASAKI ,  Hiroatsu TAMAI

IPC: B41J29/17

Abstract: A cleaning device includes a cleaning unit which removes foreign matter adhered on a conveyance face of a conveyance member conveying a sheet, by using a belt shaped web; and a unit moving mechanism which displaces the cleaning unit to a cleaning position where the cleaning unit comes into contact with the conveyance face and to a separation position separated away from the cleaning position. The cleaning unit includes a delivery roller delivering the web, a pressure roller bringing the web pressure-contact with the conveyance face and a winding roller winding the web passed the conveyance face. The cleaning unit is tilted such that a cleaning face of the web between the pressure roller and the winding roller faces upward as the cleaning unit is displaced from the cleaning position to the separation position.

公开(公告)号：US20160252851A1

公开(公告)日：2016-09-01

申请号：US15049536

申请日：2016-02-22

Applicant: KYOCERA Document Solutions Inc.

Inventor： Yasuhiro MICHISHITA ,  Satoshi UEMURA

IPC: G03G15/16

CPC classification number: G03G15/1665 ,  G03G15/1675 ,  G03G15/657 ,  G03G15/80 ,  G03G21/203

Abstract: In printing, a first power supply unit applies a transfer current with a polarity opposite to a charged polarity of toner to the transfer roller. A second power supply unit applies a toner scattering suppression current with a polarity opposite to the charged polarity of the toner to a stretching roller until a rear end of a sheet passes through a separation position after a front end of the sheet reaches the separation position. The first power supply unit applies a post-transfer current, which has a polarity opposite to the charged polarity of the toner and has an absolute value equal to or more than an absolute value of the toner scattering suppression current, to the transfer roller until the rear end of the sheet passes through the separation position after the rear end of the sheet passes through the nip position.

Abstract translation: 在打印时，第一电源单元将具有与带电极性相反的极性的转移电流施加到转印辊。 第二电源单元将具有与调色剂的带电极性相反的极性的调色剂散射抑制电流施加到拉伸辊，直到片材的后端在片材的前端到达分离位置之后通过分离位置。 第一电源单元施加后转移电流，该转移电流具有与调色剂的带电极性相反的极性，并且具有等于或大于调色剂散射抑制电流的绝对值的绝对值到转印辊直到 在片材的后端通过夹持位置之后，片材的后端通过分离位置。