公开(公告)号：US20220269199A1

公开(公告)日：2022-08-25

申请号：US17678656

申请日：2022-02-23

Applicant: KYOCERA Document Solutions Inc.

Inventor： Einosuke Kikuchi ,  Kuniaki Nakano

IPC: G03G15/20

Abstract: A fixing device includes a fixing member, a pressurizing member, a charging portion, and a control portion. The fixing member rotates while being heated. The pressurizing member forms a nip portion between itself and a surface of the fixing member in such a way as to hold a sheet therebetween and conveys the sheet by rotating together with the fixing member, wherein an image of toner has been formed on the sheet. The charging portion electrically charges the surface of the fixing member to a polarity that is same as a charging polarity of the toner by supplying a charging current to a pair of electrodes that is disposed to face the surface of the fixing member. The control portion derives an index value of a charge amount of the toner on the sheet, and adjusts the charging current based on the index value.

公开(公告)号：US11281140B2

公开(公告)日：2022-03-22

申请号：US17157333

申请日：2021-01-25

Applicant: KYOCERA Document Solutions Inc.

Inventor： Shoko Gon ,  Kuniaki Nakano

IPC: G03G15/20

Abstract: A fixing device includes an endless fixing belt, a belt guide, and a frame member. The belt guide has a fastening portion, an arc portion, and a contact portion. The fastening portion is fastened to the frame member. The arc portion extends from the fastening portion while curving in an arc shape along the inner circumferential face of the fixing belt and has an elastic force acting outward in the radial direction. The contact portion extends from one end of the arc portion in the circumferential direction toward the frame member and has a counter-face facing the inner circumferential face of the arc portion. The frame member has a regulating portion that extends toward the belt guide to make surface contact with, so as to overlap, the counter-face of the contact portion.

公开(公告)号：US20150063881A1

公开(公告)日：2015-03-05

申请号：US14470966

申请日：2014-08-28

Applicant: Kyocera Document Solutions Inc.

Inventor： Kuniaki Nakano ,  Yuuya Shimohora

IPC: G03G15/20

CPC classification number: G03G15/2028

Abstract: A fixing device includes a fixing member, a pressure member, and a guiding member. The guiding member includes a first guide surface, a second guide surface, and a pair of third guide surfaces consecutively installing both end portions in the axial direction of the first guide surface and both end portions in the axial direction of the second guide surface. The first end edge of the first guide surface has a first circular arc shape arranged such that a center portion in the axial direction projects toward the downstream side in the rotation direction with respect to both end portions in the axial direction. The second guide surface is one of a curved surface in a second circular arc shape arranged such that a center portion in the axial direction is close to the first circumference surface with respect to both end portions in the axial direction.

Abstract translation: 定影装置包括固定构件，压力构件和引导构件。 引导构件包括第一引导表面，第二引导表面和一对第三引导表面，该第三引导表面连续地安装在第一引导表面的轴向方向上的两个端部和在第二引导表面的轴向方向上的两个端部。 第一引导表面的第一端边缘具有第一圆弧形状，其布置成使得轴向中心部分相对于沿轴向的两个端部在旋转方向上向下游侧突出。 第二引导面是第二圆弧形状的曲面中的一个，轴向的中心部分相对于沿轴向的两端部接近第一圆周面。

公开(公告)号：US20140023403A1

公开(公告)日：2014-01-23

申请号：US13944684

申请日：2013-07-17

Applicant: KYOCERA DOCUMENT SOLUTIONS INC.

Inventor： Kuniaki Nakano ,  Eiji Nimura ,  Koji Kuramashi ,  Hiroshi Yamazaki ,  Yoshihiro Yamagishi

IPC: G03G15/08

CPC classification number: G03G15/0865 ,  G03G15/0822 ,  G03G15/0877 ,  G03G15/0893 ,  G03G15/09 ,  G03G2215/0822 ,  G03G2215/0838

Abstract: A developer conveyance device includes a housing and a conveyance member. The conveyance member is supported to the housing and rotates to convey developer. The conveyance member includes a shaft portion, a helical member, and a plurality of reinforcement members. The plurality of reinforcement members are disposed in a circumferential direction of rotation of the conveyance member. When viewing a cross section in a direction intersecting with the rotational axis, an outer circumferential surface of the helical member includes a facing region and a non-facing region, which are defined for one reinforcement member of the plurality of reinforcement members, the facing region being a region where the one reinforcement member of the plurality of reinforcement members is projected on an opposite side of an outer circumferential surface of the helical member through the rotational axis, and the non-facing region being a region of the outer circumferential surface of the helical member which is different from the facing region. The other reinforcement member of the plurality of reinforcement members is disposed in the non-facing region.

Abstract translation: 显影剂输送装置包括壳体和输送构件。 传送构件被支撑到壳体并旋转以传送显影剂。 输送构件包括轴部，螺旋构件和多个加强构件。 多个加强构件设置在输送构件的旋转圆周方向上。 当在与旋转轴线相交的方向上观察横截面时，螺旋构件的外周面包括被限定为多个加强构件中的一个加强构件的面对区域和不面对区域，面对区域 作为多个加强构件中的一个加强构件通过旋转轴线突出在螺旋构件的外周面的相反侧的区域，并且面向非区域是位于螺旋构件的外周面的区域 螺旋构件不同于面对区域。 多个加强构件的另一个加强构件设置在不面向区域中。

公开(公告)号：US20220236674A1

公开(公告)日：2022-07-28

申请号：US17648378

申请日：2022-01-19

Applicant: KYOCERA Document Solutions Inc.

Inventor： Einosuke Kikuchi ,  Kuniaki Nakano

IPC: G03G15/20 ,  G03G15/02 ,  G03G15/00

Abstract: A fixing device includes a fixing member, a pressurizing member, a charging portion, and a control portion. The fixing member rotates while being heated. The pressurizing member forms a nip portion between itself and a surface of the fixing member in such a way as to hold a sheet therebetween and conveys the sheet by rotating together with the fixing member, wherein an image of toner has been formed on the sheet. The charging portion electrically charges the surface of the fixing member to a polarity that is same as a charging polarity of the toner by supplying a charging current to a pair of electrodes that is disposed to face the surface of the fixing member. The control portion acquires sheet information that includes one or more of length information, width information, and thickness information of the sheet and adjusts the charging current based on the sheet information.

公开(公告)号：US10303092B2

公开(公告)日：2019-05-28

申请号：US16015290

申请日：2018-06-22

Applicant: KYOCERA Document Solutions Inc.

Inventor： Kuniaki Nakano

IPC: G03G15/20

Abstract: A fixing device includes a fixing member, a pressing member, a pressure adjustment part and a linkage part. The pressing member forms a pressing area with the fixing member. The pressure adjustment part moves one of the fixing member and the pressing member in a direction close to the other of the fixing member and the pressing member to increase a pressure of the pressing area and moves one of the fixing member and the pressing member in a direction away from the other of the fixing member and the pressing member to decrease the pressure of the pressing area. The linkage part transmits an operation to decrease the pressure of the pressing area to the fixing member and then moves the fixing member along an axial direction.

公开(公告)号：US09841709B2

公开(公告)日：2017-12-12

申请号：US15458836

申请日：2017-03-14

Applicant: KYOCERA Document Solutions Inc.

Inventor： Kuniaki Nakano

IPC: G03G15/20 ,  G03G15/02

CPC classification number: G03G15/2017 ,  G03G15/0216 ,  G03G15/0291 ,  G03G15/2053 ,  G03G15/2064 ,  G03G15/657

Abstract: A fixing device includes a first fixing member, a second fixing member, and a charge application portion. The first fixing member contacts unfixed toner on a sheet conveyed along a conveyance path. The second fixing member forms a nip portion between itself and the first fixing member such that the sheet passes through the nip portion. The charge application portion applies an electric charge to the unfixed toner on the sheet and to an outer circumferential surface of the first fixing member at a region on an upstream side of the nip portion in a movement direction of the outer circumferential surface, by causing a corona discharge to be generated between a discharge electrode and a counter electrode that are disposed apart from the outer circumferential surface of the first fixing member.

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.

公开(公告)号：US09304456B2

公开(公告)日：2016-04-05

申请号：US14451944

申请日：2014-08-05

Applicant: KYOCERA Document Solutions Inc.

Inventor： Kuniaki Nakano

IPC: G03G15/20

CPC classification number: G03G15/2053 ,  G03G2215/2035

Abstract: A fixing device includes a fixing belt, a pressuring member, a heating source, a heat conducting member and a reflecting member. The fixing belt is arranged rotatably. The pressuring member is arranged outside the fixing belt and comes into pressure contact with the fixing belt to form a fixing nip. The heating source is arranged inside the fixing belt to emit radiant heat. The heat conducting member comes into contact with an inner circumference face of the fixing belt and absorbs the radiant heat emitted from the heating source. The reflecting member includes a reflecting part and a nip forming part. The reflecting part reflects the radiant heat emitted from the heating source toward the heat conducting member. The nip forming part is unified with the reflecting part and comes into contact with the inner circumference face of the fixing belt to press the fixing belt to the pressuring member.

Abstract translation: 定影装置包括定影带，加压构件，加热源，导热构件和反射构件。 定影带可旋转地布置。 加压构件布置在定影带的外侧并与定影带压力接触以形成定影辊隙。 加热源设置在定影带内部以发出辐射热。 导热部件与定影带的内周面接触，吸收从加热源发出的辐射热。 反射构件包括反射部和辊隙形成部。 反射部反射从发热体朝向导热部件发出的辐射热。 辊隙形成部与反射部一体化，与定影带的内周面接触，将定影带压向加压部件。