公开(公告)号：US20230168615A1

公开(公告)日：2023-06-01

申请号：US18059741

申请日：2022-11-29

Applicant: KYOCERA Document Solutions Inc.

Inventor： Hiroki KAWASAKI ,  Takashi EIKI ,  Ryohei TOKUNAGA ,  Yuta KITABAYASHI ,  Rina KIKUGAWA ,  Shunsaku FUJII ,  Tei TO

IPC: G03G15/20

CPC classification number: G03G15/2053

Abstract: A fixing device includes a first fixing member, a second fixing member, a pressing member, and a heating device. The first fixing member is in an ungrounded state and comes into contact with a toner image on a sheet. The second fixing member is arranged opposite the first fixing member. The pressing member presses the first fixing member against the second fixing member so as to form, at the contact portion between the first fixing member and the second fixing member, a nip portion through which the sheet passes. The heating device heats the first fixing member.

公开(公告)号：US20220276596A1

公开(公告)日：2022-09-01

申请号：US17652590

申请日：2022-02-25

Applicant: KYOCERA Document Solutions Inc.

Inventor： Takashi EIKI ,  Akihiro KONDO ,  Ryohei TOKUNAGA ,  Yuta KITABAYASHI ,  Hiroki KAWASAKI ,  Shunsaku FUJII ,  Tei TO ,  Rina KIKUGAWA

IPC: G03G15/20

Abstract: A heater includes a fixing device including a heater substrate, electrodes, a heating element, and a heat conducting member. The heating element is disposed on a facing surface of the heater substrate that is to face a sheet, and includes a plurality of heating element pieces arranged in a line in a main scanning direction of the sheet with a gap therebetween. The heat conducting member stores heat generated from the heating element and radiates the heat toward the sheet passing over the gap.

公开(公告)号：US20200019098A1

公开(公告)日：2020-01-16

申请号：US16509214

申请日：2019-07-11

Applicant: KYOCERA Document Solutions Inc.

Inventor： Takashi EIKI ,  Hiroki KAWASAKI ,  Atsushi KOHAMA ,  Yuhiro SAKAI

IPC: G03G15/20 ,  G03G15/16

Abstract: A fixing device includes a cylindrical rotatable fixing belt, a flat heater, a heater holding part, a pressuring member, and a connector. In the flat heater, an electrode part, a feeder and a heat generating part are formed in the same face state. The heater holding part holds the flat heater so that the heat generating part faces to an inner circumference face of the fixing belt. The pressuring member sandwiches the fixing belt with the flat heater. The connector has a contacting portion coming into contact with the electrode part. The feeder has a portion arranged at a near side from the electrode part in an attaching direction of the connector. The heater holding part includes a protecting portion covering the portion of the feeder arranged at the near side from the electrode part.

公开(公告)号：US20240288810A1

公开(公告)日：2024-08-29

申请号：US18586955

申请日：2024-02-26

Applicant: KYOCERA Document Solutions Inc.

Inventor： Hiroki KAWASAKI ,  Ryohei TOKUNAGA ,  Akihiro KONDO ,  Yuta KITABAYASHI ,  Rina KIKUGAWA ,  Shunsaku FUJII ,  Yuto MASAOKA

IPC: G03G15/20

CPC classification number: G03G15/2053 ,  G03G15/2064

Abstract: A fixing device includes a fixing belt formed in a cylindrical shape, with a lubricant applied to an inner circumferential surface, and set such that a circumferential surface rotates in a circumferential direction, a heater retention member that retains the heater, inside of the fixing belt, and a pressure member that defines a nip region, through which a recording medium is transported in a nipped state, between the pressure member and a portion of the fixing belt heated from inside by the heater, and drives the fixing belt to rotate. The heater retention member includes a first opposing face extending in a rotation axis direction of the fixing belt, and opposed to the inner circumferential surface of the fixing belt. The first opposing face includes slits aligned in the rotation axis direction of the fixing belt, and a lubricant is applied in advance inside the slits.

公开(公告)号：US20230168614A1

公开(公告)日：2023-06-01

申请号：US18059220

申请日：2022-11-28

Applicant: KYOCERA Document Solutions Inc.

Inventor： Shunsaku FUJII ,  Takashi EIKI ,  Ryohei TOKUNAGA ,  Yuta KITABAYASHI ,  Rina KIKUGAWA ,  Hiroki KAWASAKI ,  Tei TO

IPC: G03G15/20

CPC classification number: G03G15/2053 ,  G03G15/2028 ,  G03G15/2039

Abstract: An image forming apparatus includes a fixing belt, a pressing member, a heating source, a temperature detecting element, a recording medium detection unit, and a control unit. The heating source is arranged to be opposed to the pressing member via the fixing belt so as to be in contact with an inner circumferential surface of the fixing belt and heats the fixing belt at a fixing nip between the fixing belt and the pressing member. The temperature detecting element detects a temperature of the heating source. The recording medium detection unit is arranged, on a conveyance path, on an upstream side of the fixing nip in a conveyance direction of a recording medium and detects presence/absence of the recording medium being conveyed. Based on the presence/absence of the recording medium detected by the recording medium detection unit, the control unit controls timing for energizing the heating source.

公开(公告)号：US20220317606A1

公开(公告)日：2022-10-06

申请号：US17704506

申请日：2022-03-25

Applicant: KYOCERA Document Solutions Inc.

Inventor： Hiroki KAWASAKI ,  Takashi EIKI ,  Akihiro KONDO ,  Ryohei TOKUNAGA ,  Yuta KITABAYASHI ,  Rina KIKUGAWA ,  Shunsaku FUJII ,  Tei TO

IPC: G03G15/20

Abstract: A fixing belt heats and fixes a toner image formed on a sheet. A plurality of heating element pieces is arranged on an opposing surface of a heater in a main scanning direction. The opposing surface faces the sheet. A heat capacity of the fixing belt and a clearance, in the main scanning direction, of a gap portion between the heating element pieces adjacent to each other have a relationship expressed as follows: (the heat capacity (J/K) of the fixing belt)≥(24×(the clearance (mm))−9).

公开(公告)号：US20220317605A1

公开(公告)日：2022-10-06

申请号：US17704207

申请日：2022-03-25

Applicant: KYOCERA Document Solutions Inc.

Inventor： Rina KIKUGAWA ,  Takashi EIKI ,  Akihiro KONDO ,  Ryohei TOKUNAGA ,  Yuta KITABAYASHI ,  Hiroki KAWASAKI ,  Shunsaku FUJII ,  Tei TO

IPC: G03G15/20 ,  H05B3/00

Abstract: A heater includes electrodes and heating element pieces. The electrodes energize the heating element pieces with electricity. The heating element pieces are connected to the electrodes and arranged through a gap portion in the heater in a main scanning direction. A ratio of a second surface area of the gap portion to a first surface area of the heating element pieces is 0

公开(公告)号：US20220317604A1

公开(公告)日：2022-10-06

申请号：US17656552

申请日：2022-03-25

Applicant: KYOCERA Document Solutions Inc.

Inventor： Shunsaku FUJII ,  Takashi EIKI ,  Akihiro KONDO ,  Yuta KITABAYASHI ,  Rina KIKUGAWA ,  Hiroki KAWASAKI ,  Tei TO ,  Ryohei TOKUNAGA

IPC: G03G15/20

Abstract: An image forming apparatus includes a fixing section, a detection section, and a controller. The detection section detects a passing range of a recording medium in terms of a direction intersecting with a conveyance direction of the recording medium. A heating section of the fixing section includes a first heater and a second heater. The first heater has a longitudinal direction extending in an axis direction. The second heater has a longitudinal direction extending in terms of the axis direction from each of opposite ends of the first heater in terms of the axis direction. When a result of detection by the detection section indicates that the passing range of the recording medium does not overlap with a specific range of the second heater, the controller restricts heat generation by the second heater.

公开(公告)号：US20190056684A1

公开(公告)日：2019-02-21

申请号：US16101111

申请日：2018-08-10

Applicant: KYOCERA Document Solutions Inc.

Inventor： Takashi EIKI ,  Hiroki KAWASAKI ,  Ryohei TOKUNAGA ,  Atsushi KOHAMA ,  Yuhiro SAKAI ,  Kotatsu KAWAGUCHI

IPC: G03G15/20 ,  G03G15/06 ,  G03G15/00

Abstract: The fixing device includes a fixing member, a pressing member, and a heat source. The fixing member heats toner on a medium. The pressing member forms a pressing area with the fixing member and presses the toner. The heat source is provided corresponding to the pressing area across the fixing member and heats the fixing member. The heat source includes a heat insulation layer and a heating and contacting part. The heat insulation layer is laminated on a base material and has a convex part that protrudes toward the fixing member. The heating and contacting part is laminated on the heat insulation layer that has the convex part and contacts to an inner surface of the fixing member so as to heat the fixing member. The convex part protrudes the heating and contacting part laminated thereon toward the fixing member so as to maximize pressure in the pressing area.

公开(公告)号：US20240361714A1

公开(公告)日：2024-10-31

申请号：US18640337

申请日：2024-04-19

Applicant: KYOCERA Document Solutions Inc.

Inventor： Akihiro KONDO ,  Ryohei TOKUNAGA ,  Yuta KITABAYASHI ,  Rina KIKUGAWA ,  Hiroki KAWASAKI ,  Shunsaku FUJII ,  Yuto MASAOKA

IPC: G03G15/20 ,  G03G15/00

CPC classification number: G03G15/205 ,  G03G15/2064 ,  G03G15/5004 ,  G03G2215/00772

Abstract: An image forming apparatus according to an aspect of the present disclosure includes a fixing device and a controller. The fixing device includes a fixing member, a pressure member, a heating member, and a temperature sensor. The controller cuts off power supply to the heating member when the temperature detected by the temperature sensor has risen to a cutoff temperature higher than the target temperature and thereafter resumes power supply to the heating member when the detected temperature has fallen below the cutoff temperature, and performs the PID control while limiting a maximum power supplied to the heating member to an upper limit power, which is a power supplied to the heating member at the time when the detected temperature has risen to the cutoff temperature, during a period from when power supply is resumed until a predetermined specific period of time elapses.