公开(公告)号：US10545447B2

公开(公告)日：2020-01-28

申请号：US16235078

申请日：2018-12-28

Applicant: KYOCERA Document Solutions Inc.

Inventor： Yuta Kitabayashi ,  Yoshihiro Yamagishi ,  Kenichi Kasama ,  Koji Uno ,  Nobuyuki Hayashi

IPC: G03G15/20 ,  G03G15/00

Abstract: An image forming apparatus has an image forming portion, a fixing device, a temperature sensing device, and a control portion. The fixing device has a fixing member having a heated rotary member and a pressing member forming a fixing nip by making contact with the heated rotary member. The temperature sensing device senses the surface temperature of at least one of the heated rotary member and the pressing member in a plurality of regions in the axial direction. The control portion estimates the thickness distribution of the surface layer of at least one of the heated rotary member and the pressing member in the axial direction based on the time taken for the surface temperature in the plurality of regions to reach the predetermined temperature, and thereby estimates the lifetime of at least one of the heated rotary member or the pressing member based on the estimated thickness distribution.

公开(公告)号：US09235173B2

公开(公告)日：2016-01-12

申请号：US14560318

申请日：2014-12-04

Applicant: KYOCERA Document Solutions Inc.

Inventor： Kenichi Kasama

IPC: G03G15/20

CPC classification number: G03G15/2053 ,  G03G15/2064 ,  G03G2215/2025 ,  G03G2215/2035

Abstract: A fixing device includes a fixing belt, a pressuring member, a pressing member, a guiding member, a cap member, an elastic member and a detecting mechanism. The pressing member includes a pressing face pressing the fixing belt to a side of the pressuring member. The fixing belt includes a bulging part arranged at the downstream side from a fixing nip in a conveying direction. The cap member includes a facing part facing to the bulging part. Before the pressuring member comes into pressure contact with the fixing belt, a gap is arranged between the bulging part and facing part. When the pressuring member comes into pressure contact with the fixing belt, the bulging part bulges toward an external diameter side of the fixing belt to fill up the gap and the cap member is held by an end part of the fixing belt via the elastic member.

Abstract translation: 定影装置包括定影带，加压构件，按压构件，引导构件，帽构件，弹性构件和检测机构。 按压构件包括将定影带按压到加压构件的一侧的按压面。 定影带包括布置在沿着输送方向的定影辊隙的下游侧的凸出部。 盖构件包括面向凸出部的面对部。 在加压构件与定影带压力接触之前，在凸出部和面对部之间设置有间隙。 当加压构件与定影带压力接触时，凸出部分朝向定影带的外径侧凸起以填充间隙，并且帽构件通过弹性构件由定影带的端部保持。

公开(公告)号：US20220163911A1

公开(公告)日：2022-05-26

申请号：US17456017

申请日：2021-11-22

Applicant: KYOCERA Document Solutions Inc.

Inventor： Shoko Gon ,  Kenichi Kasama

IPC: G03G15/20

Abstract: A fixing device includes a pair of rotating members and a heating part. The pair of rotating members holds a recording medium, passes the recording medium and thermally fixes toner on the recording medium. The heating part heats one rotating member of the pair of rotating members to increases a temperature of the rotating member. The heating part is PID or PI controlled. When power consumption of an apparatus including the pair of rotating members is not higher than a predetermined value, a PID coefficient or a PI coefficient used in the PID control or the PI control is set to be smaller than when the power consumption is higher than the predetermined value.

公开(公告)号：US10185281B2

公开(公告)日：2019-01-22

申请号：US15953039

申请日：2018-04-13

Applicant: KYOCERA Document Solutions Inc.

Inventor： Tamotsu Shimizu ,  Yoshihiro Yamagishi ,  Akifumi Yamaguchi ,  Koji Uno ,  Kenichi Kasama ,  Yuta Kitabayashi ,  Nobuyuki Hayashi

IPC: G03G15/00 ,  G03G21/00 ,  G03G5/147 ,  G03G5/00 ,  G03G15/08

Abstract: An image forming apparatus has a photosensitive member, a charging member, an exposing device, a developing device, a transfer member, a polishing member, a driving device, a voltage applying device, a torque detector, and a control portion. The photosensitive member has a photosensitive layer and a surface protection layer formed on the surface of the photosensitive layer. The polishing member has an elastic layer on its circumferential surface, and rotates with a linear velocity difference from that of the photosensitive member. The torque detector detects the torque of the driving device. The control portion estimates an attachment condition of discharge products to the surface of the photosensitive member based on the torque of the driving device detected by the torque detector. When the torque is equal to or higher than a predetermined value, the control portion performs an image degradation suppression process.

公开(公告)号：US09483000B2

公开(公告)日：2016-11-01

申请号：US15011825

申请日：2016-02-01

Applicant: KYOCERA Document Solutions Inc.

Inventor： Kenichi Kasama

IPC: G03G15/20

CPC classification number: G03G15/2053 ,  G03G2215/2035

Abstract: In a fixing device including a cap member mounted at an end portion of a fixing belt in a rotation shaft direction via a rotation transfer member, an axis center of a support shaft supporting the cap member is made eccentric with respect to a rotation axis center of the fixing belt.

Abstract translation: 在包括通过旋转传递构件在旋转轴方向上安装在定影带的端部处的盖构件的固定装置中，支撑盖构件的支撑轴的轴心相对于旋转轴心的旋转轴心偏心 定影带。

公开(公告)号：US09037024B2

公开(公告)日：2015-05-19

申请号：US13867713

申请日：2013-04-22

Applicant: Kyocera Document Solutions Inc.

Inventor： Kenichi Kasama

IPC: G03G15/20

CPC classification number: G03G15/2085 ,  G03G15/2028 ,  G03G15/2064 ,  G03G2215/2035

Abstract: A fusing device includes a regulating member and a switching mechanism. The regulating member has a flat surface and an arc-shaped surface and regulates a nip formed by a belt and a roller. The switching mechanism switches the fusing device between a first mode and a second mode in which an unfused toner image is fused to a recording medium. The flat surface is provided along a direction in which the recording medium enters the nip. The arc-shaped surface is provided downstream of the flat surface in the recording medium entry direction, is contiguous to the flat surface, and is curved toward the roller. In the first mode, the nip is regulated by the flat surface and the arc-shaped surface. In the second mode, the nip is regulated by the flat surface of the flat and arc-shaped surfaces.

Abstract translation: 定影装置包括调节构件和切换机构。 调节构件具有平坦表面和弧形表面，并且调节由带和辊形成的辊隙。 切换机构在第一模式和第二模式之间切换定影装置，其中未熔化的调色剂图像融合到记录介质。 平面在记录介质进入辊隙的方向上设置。 弧形表面设置在记录介质入口方向上的平坦表面的下游，与平坦表面邻接并且朝向辊弯曲。 在第一模式中，辊隙由平坦表面和弧形表面调节。 在第二模式中，辊隙由扁平和弧形表面的平坦表面调节。

公开(公告)号：US10054883B2

公开(公告)日：2018-08-21

申请号：US15619769

申请日：2017-06-12

Applicant: KYOCERA Document Solutions Inc.

Inventor： Yuzuru Nanjo ,  Kenichi Kasama ,  Noriaki Furukawa

IPC: G03G15/20

CPC classification number: G03G15/2064 ,  G03G15/2017 ,  G03G21/206

Abstract: A fixing device includes a fixing member, a pressing member, a charger and an air discharging device. The fixing member is rotatably provided and heated by a heat source. The pressing member is rotatably provided and brought into pressure contact with the fixing member to form a fixing nip through which a sheet having a toner image is passed. The charger is disposed to oppose to the fixing member and applies an electric charge of the same polarity as a toner constituting the toner image to a surface of the fixing member. The air discharging device discharges an air flow passed between the fixing member and the charger via a filter.

公开(公告)号：US09501009B2

公开(公告)日：2016-11-22

申请号：US14783327

申请日：2015-02-16

Applicant: KYOCERA Document Solutions Inc.

Inventor： Shoji Koda ,  Kenichi Kasama

IPC: G03G15/20

CPC classification number: G03G15/2053 ,  G03G15/2017 ,  G03G2215/2035

Abstract: A fixing device according to the present invention includes a fixing belt (21), a cap member (28) attached to an end part (21a) of the fixing belt (21) and an elastic member (29) arranged between the fixing belt (21) and the cap member (28). The cap member (28) includes a main body part (55) covering an outside of the end part (21a) of the fixing belt (21) and a flange part (56) extending from the main body part (55) to an inside and covering an outer diameter side of the end part (21a) of the fixing belt (21). A step (s) is formed in an inner circumference face of the flange part (56). An outer circumference face of the elastic member (29) comes into contact with an inside part from the step (s) in the inner circumference face of the flange part (56).

Abstract translation: 根据本发明的定影装置包括定影带（21），附接到定影带（21）的端部（21a）的盖构件（28）和布置在定影带（21）之间的弹性构件（29） 21）和盖构件（28）。 盖构件（28）包括覆盖定影带（21）的端部（21a）的外侧的主体部（55）和从主体部（55）向内侧延伸的凸缘部（56） 并覆盖定影带（21）的端部（21a）的外径侧。 在凸缘部（56）的内周面上形成有台阶。 弹性构件（29）的外周面与凸缘部（56）的内周面的台阶的内侧部接触。

公开(公告)号：US11782369B2

公开(公告)日：2023-10-10

申请号：US17835781

申请日：2022-06-08

Applicant: KYOCERA Document Solutions Inc.

Inventor： Kuniaki Nakano ,  Takashi Miyake ,  Kenichi Kasama

IPC: G03G15/20

CPC classification number: G03G15/2053 ,  G03G15/205 ,  G03G15/2028

Abstract: A fixing device includes a first fixing member, a second fixing member, a charging portion, and a control portion. The first fixing member makes contact with a toner image on a sheet conveyed along a conveying passage. The second fixing member forms a nip. The charging portion generates an application current. The control portion can perform an application mode, in which the application current is generated, and a standby mode, in which no application current is generated. The control portion performs the application mode during a first period after initial start-up until the passage of a predetermined period and performs the standby mode during a second period after the passage of the first period until the passage of a predetermined period.

公开(公告)号：US10082754B2

公开(公告)日：2018-09-25

申请号：US15841737

申请日：2017-12-14

Applicant: KYOCERA Document Solutions Inc.

Inventor： Kenichi Kasama ,  Akihiro Kondo ,  Kuniaki Nakano

IPC: G03G15/20 ,  G03G15/02 ,  G03G21/02 ,  G03G15/16

CPC classification number: G03G15/2028 ,  G03G15/0216 ,  G03G15/161 ,  G03G15/2053 ,  G03G15/206 ,  G03G21/02

Abstract: A fixing device includes a fixing member, a pressing member, a charger, and adjusting part. The fixing member heats toner images on media. The pressing member forms nips with the fixing member and presses the media. The charger uses a corona discharge that occurs in an electric field generated around a discharging electrode so as to charge the fixing member to a same polarity of toner in the toner images. The adjusting part increases a bias applied to the discharging electrode in accordance with increase of a cumulative number calculated by accumulating a number of the media on which the toner images are fixed or increase of a cumulative printing amount calculated by multiplying a printing rate that indicates a ratio of an area of the toner images to an area of the media by the cumulative number.