公开(公告)号：US20230161284A1

公开(公告)日：2023-05-25

申请号：US18057162

申请日：2022-11-18

Applicant: KYOCERA Document Solutions Inc.

Inventor： Kanako Kikuchi ,  Akihiro Kondo ,  Keisuke Oba

IPC: G03G15/00

CPC classification number: G03G15/5054

Abstract: An image forming apparatus includes a change processing portion, a detection processing portion, a second acquisition processing portion, and an adjustment processing portion. The change processing portion changes a transfer current when a plurality of specific toner images which each include a toner layer of C formed on an image-carrying member and a toner layer of M are each transferred to a sheet. The detection processing portion detects a specific image that corresponds to each specific toner image included in the captured image of the sheet. The second acquisition processing portion acquires, for each of detected specific images, a skewness of a histogram of gradation values of a color mixture of M and Y in pixels included in each of the specific images. The adjustment processing portion adjusts the transfer current based on: the skewness acquired for each of the specific images; and the transfer current corresponding to the skewness.

公开(公告)号：US11614701B2

公开(公告)日：2023-03-28

申请号：US17656402

申请日：2022-03-24

Applicant: KYOCERA Document Solutions Inc.

Inventor： Akihiro Kondo ,  Takashi Eiki ,  Ryohei Tokunaga ,  Yuta Kitabayashi ,  Rina Kikugawa ,  Hiroki Kawasaki ,  Shunsaku Fujii ,  Tei To

IPC: G03G15/20 ,  H04N1/00

Abstract: A fixing belt heats and fixes a toner image. A pressure roller rotates the fixing belt while in contact with the fixing belt. A heater heats the fixing belt. A lubricating oil forms an oil film between the heater and an inner peripheral surface of the fixing belt. A pressure roller driver rotates the pressure roller so that the lubricating oil causes the fixing belt to be out of contact with the heater.

公开(公告)号：US11126117B1

公开(公告)日：2021-09-21

申请号：US17193012

申请日：2021-03-05

Applicant: KYOCERA Document Solutions Inc.

Inventor： Akihiro Kondo

IPC: G03G15/20

Abstract: A fixing device is provided with a first rotating member, a second rotating member in contact with the first rotating member, a first drive motor for rotationally driving the first rotating member, a second drive motor for rotationally driving the second rotating member, a torque limiter provided between the second rotating member and the second drive motor, and a pressure adjusting mechanism for adjusting the nip pressure between the first rotating member and the second rotating member. When the nip pressure is greater than the maximum torque that can be transmitted by driving the torque limiter, the second rotating member rotates following the first rotating member and at the same linear speed as that of the first rotating member, and when the nip pressure is equal to or less than the maximum torque, the second rotating member rotates at a linear speed different from that of the first rotating member.

公开(公告)号：US10353328B2

公开(公告)日：2019-07-16

申请号：US16139328

申请日：2018-09-24

Applicant: KYOCERA Document Solutions Inc.

Inventor： Akihiro Kondo

IPC: G03G15/20 ,  G03G15/16

Abstract: A fixing device includes an elastic fixing roller, an endless belt, a pressing roller and a stretching part. The endless fixing belt is wound around the fixing roller with play. The pressing roller presses the fixing roller via the fixing belt to deform the fixing roller and forms a pressing area between the pressing roller and the fixing belt. A sheet passes through the pressing area. The stretching part is configured to pull the fixing belt in a direction opposite to the pressing roller and to stretch the fixing belt when a conveyance speed of the sheet conveyed to the pressing area is slower than a reference conveyance speed. The stretching part is configured to restrain deformation of the fixing roller to the pressing roller and to shorten length of the pressing area along a conveyance direction of the sheet.

公开(公告)号：US10146160B2

公开(公告)日：2018-12-04

申请号：US15835516

申请日：2017-12-08

Applicant: KYOCERA Document Solutions Inc.

Inventor： Akihiro Kondo

IPC: G03G15/20

Abstract: A fixing device includes a heating body, a heating source, a pressuring body, a driving source, a moving part and a cooling part. The driving source rotates one body of the heating and pressuring bodies. The moving part moves the pressuring body relatively to the heating body at timing after the medium passes the nip between the heating and pressuring bodies to separate the pressuring body from the heating body. The cooling part cools the pressuring body separated from the heating body. If fixing operation is carried out when a specific value obtained in the last fixing operation by dividing a passing period of the medium through the nip by a rotating period of the one body, is smaller than a reference value, the timing is made early in comparison with a case where the specific value is equal to or more than the reference value.

公开(公告)号：US09223258B2

公开(公告)日：2015-12-29

申请号：US14134639

申请日：2013-12-19

Applicant: KYOCERA Document Solutions Inc.

Inventor： Akihiro Kondo

IPC: G03G15/20

CPC classification number: G03G15/2003 ,  G03G15/2053

Abstract: A fixing device includes a fixing belt configured to rotate about a specified rotation axis, and an oblique motion restraint member provided at an outer side of the fixing belt in a direction of the rotation axis and configured to restrain oblique motion of the fixing belt. The oblique motion restraint member includes a contact portion provided to make contact with an end surface of the fixing belt and a breakage-preventing portion provided radially inward of the contact portion and more outward in the direction of the rotation axis than the contact portion. The contact portion bulges in an arcuate cross-sectional shape toward an inner side in the direction of the rotation axis.

Abstract translation: 定影装置包括：围绕特定旋转轴线旋转的定影带;以及倾斜运动限制部件，其沿着旋转轴线的方向设置在定影带的外侧，并且被配置为抑制定影带的倾斜运动。 倾斜运动抑制构件包括设置成与定影带的端面接触的接触部分和设置在接触部分的径向内侧并且沿旋转轴线方向比接触部分更多外侧设置的防破裂部分。 接触部分朝向旋转轴线方向的内侧以弓形横截面形状凸出。

公开(公告)号：US20150050056A1

公开(公告)日：2015-02-19

申请号：US14385912

申请日：2013-08-08

Applicant: KYOCERA Document Solutions Inc.

Inventor： Akihiro Kondo

IPC: G03G15/20

CPC classification number: G03G15/2053 ,  G03G15/2017 ,  G03G2215/00168 ,  G03G2215/2032

Abstract: The roller members (40) are provided with: a bearing part (41) affixed to a device main body (5a); an elastic roller part (42) that is disposed having a gap (D) with the outside peripheral surface of the hot roller (27) and with which an end part (26a) of the anchoring belt (26) comes into contact because of the meandering of the anchoring belt (26); and a powder (43) that is disposed between the bearing part (41) and the elastic roller part (42) and restricts the rotation of the elastic roller part (42). The gap (D) is constituted smaller than the thickness (T) of the anchoring belt (26) and the end part (26a) of the anchoring belt (26) enters the gap in opposition to the elastic force of the elastic roller part (42) because of the meandering of the anchoring belt (26).

Abstract translation: 辊构件（40）设置有：固定到装置主体（5a）的轴承部（41）; 弹性辊部分（42）设置成与热辊（27）的外周表面具有间隙（D），并且锚固带（26）的端部（26a）由于 锚固带（26）的曲折; 以及设置在所述支承部（41）与所述弹性辊部（42）之间并限制所述弹性辊部（42）的旋转的粉末（43）。 间隙（D）构成为小于锚定带（26）的厚度（T），并且锚定带（26）的端部（26a）相对于弹性辊部的弹力进入间隙（ 42），因为锚固带（26）的曲折。

公开(公告)号：US10185243B2

公开(公告)日：2019-01-22

申请号：US15921814

申请日：2018-03-15

Applicant: KYOCERA Document Solutions Inc.

Inventor： Akihiro Kondo

IPC: G03G15/045 ,  G03G15/00 ,  G03G15/20

Abstract: A fixing device includes a rotatable fixing member, a rotatable pressuring member and an electric charge supplying device. The fixing member contacts a recording medium having a toner image and heats the recording medium. The pressuring member pressures the recording medium between the fixing member and the pressuring member. The electric charge supplying device electrically discharges electric charges with same polarity as toner and supplies the electric charges to the fixing member. An output current value electrically discharged by the electric charge supplying device is adjusted on the basis of a toner charged amount of the toner image. When the toner charged amount is equal to or more than a threshold value, the output current value is set to a normal current value. When the toner charged amount is less than the threshold value, the output current value is set to a current value higher than the normal current value.

公开(公告)号：US09329540B2

公开(公告)日：2016-05-03

申请号：US14721376

申请日：2015-05-26

Applicant: KYOCERA Document Solutions Inc.

Inventor： Akihiro Kondo

IPC: G03G15/20

CPC classification number: G03G15/2039 ,  G03G15/2017

Abstract: A fixing device includes a first rotatory body, a heater, a pressure receiving member, a supporting member, a second rotatory body, a position detection section, and a determination section. The position detection section detects a position of an outer circumferential surface of the first rotatory body in terms of a radial direction. The determination section determines a rotation state of the first rotatory body based on a result of detection by the position detection section. The position detection section includes a first position detection member and a second position detection member. The first position detection member is located upstream of a fixing nip in terms of a rotation direction of the first rotatory body. The second position detection member is located downstream of the fixing nip in terms of the rotation direction.

Abstract translation: 定影装置包括第一旋转体，加热器，压力接收构件，支撑构件，第二旋转体，位置检测部和确定部。 位置检测部根据径向检测第一旋转体的外周面的位置。 决定部基于位置检测部的检测结果来决定第一旋转体的旋转状态。 位置检测部包括第一位置检测部件和第二位置检测部件。 就第一旋转体的旋转方向而言，第一位置检测构件位于定影辊隙的上游。 第二位置检测构件在旋转方向上位于定影辊隙的下游。

公开(公告)号：US09217966B1

公开(公告)日：2015-12-22

申请号：US14721611

申请日：2015-05-26

Applicant: KYOCERA Document Solutions Inc.

Inventor： Akihiro Kondo

IPC: G03G15/20

CPC classification number: G03G15/2039 ,  G03G15/2053 ,  G03G2215/2035

Abstract: A fixing device includes a first rotatory body, a first heater, a second rotatory body, a temperature detection section, and a determination section. The first heater heats the first rotatory body. The second rotatory body and the first rotatory body provide a fixing nip where a recording medium becomes sandwiched. The temperature detection section detects a temperature change in an end portion of an outer circumferential surface of the first rotatory body. The determination section determines a rotation state of the first rotatory body based on a result of detection by the temperature detection section. The end portion of the first rotatory body has at least one first region and at least one second region that are arranged adjacent to each other in the circumferential direction. The first region has a first thermal conductivity. The second region has a second thermal conductivity that is different from the first thermal conductivity.

Abstract translation: 定影装置包括第一旋转体，第一加热器，第二旋转体，温度检测部和确定部。 第一个加热器加热了第一个旋转体。 第二旋转体和第一旋转体提供夹持记录介质的定影辊隙。 温度检测部检测第一旋转体的外周面的端部的温度变化。 判定部基于温度检测部的检测结果来决定第一旋转体的旋转状态。 第一旋转体的端部具有在圆周方向上彼此相邻布置的至少一个第一区域和至少一个第二区域。 第一区域具有第一导热性。 第二区域具有不同于第一热导率的第二热导率。