公开(公告)号：US11886137B2

公开(公告)日：2024-01-30

申请号：US17753285

申请日：2020-08-24

Applicant: KYOCERA Document Solutions Inc.

Inventor： Fumito Nakamoto ,  Masakazu Uehara ,  Hironori Takahashi ,  Tomohiro Watatani ,  Yuhiro Sakai

IPC: G03G15/20

CPC classification number: G03G15/2053 ,  G03G15/2032 ,  G03G15/2039 ,  G03G2215/2038

Abstract: A fixing device (50) includes a fixing belt (70), a pressure member (80), and a heating section (90). The heating section (90) faces an inner peripheral surface of the fixing belt (70). The heating section (90) includes a heater (HT), a first heat sensitive body (SM11), and a second heat sensitive body (SM21). The second heat sensitive body (SM21) differs from the first heat sensitive body (SM11). The heater (HT) has a first heater portion (AE1). The first heater portion (AE1) is one end portion of a pair of end portions of the heater (HT) in a longitudinal direction thereof. The first heat sensitive body (SM11) and the second heat sensitive body (SM21) face the first heater portion (AE1) and are aligned in a conveyance direction (DC) of a sheet (S).

公开(公告)号：US20230314987A1

公开(公告)日：2023-10-05

申请号：US18191784

申请日：2023-03-28

Applicant: KYOCERA Document Solutions Inc.

Inventor： Tomohiro Watatani ,  Masakazu Uehara ,  Hironori Takahashi ,  Shota Onishi ,  Yuhiro Sakai ,  Takuya Kawasumi

IPC: G03G15/20

CPC classification number: G03G15/2025 ,  G03G15/2064

Abstract: A fixing device includes a pressure member, and a holder. The pressure member forms a pressure area between the pressure member and a fixing belt. The holder is provided inside the fixing belt, has a sliding surface in contact with an inner peripheral surface of the fixing belt via a lubricant, and holds a heater for heating the fixing belt. The holder includes a plurality of slits and a blocking portion. The plurality of slits are arranged in an axial direction on the sliding surface upstream of the pressure area in a passing direction of a medium and guide movement of the lubricant from upstream to downstream in a rotational direction of the fixing belt. The blocking portion restricts an outflow of the lubricant from each of the slits and restricts a fall of the fixing belt into each of the slits.

公开(公告)号：US11507004B2

公开(公告)日：2022-11-22

申请号：US17324886

申请日：2021-05-19

Applicant: KYOCERA Document Solutions Inc.

Inventor： Masakazu Uehara ,  Tomohiro Watatani ,  Yuhiro Sakai ,  Fumito Nakamoto

IPC: G03G15/20

Abstract: A fixing device includes a heater, a heater holding member, a stay sheet-metal, and a belt holding member. The stay sheet-metal includes a top plate and side plates and is configured to control a load applied to the heater holding member, the side plates extending respectively from opposite sides of the top plate in a short-length direction of the top plate, toward the heater holding member. The belt holding member holds the fixing belt such that the fixing belt can peripherally rotate, the belt holding member holding at least one end of the heater holding member in a longitudinal direction thereof and at least one end of the stay sheet-metal in a longitudinal direction thereof. The top plate of the stay sheet-metal is formed to extend to at least one end of the stay sheet-metal in the longitudinal direction thereof.

公开(公告)号：US11500316B2

公开(公告)日：2022-11-15

申请号：US17244270

申请日：2021-04-29

Applicant: KYOCERA Document Solutions Inc.

Inventor： Masakazu Uehara ,  Tomohiro Watatani ,  Yuhiro Sakai ,  Fumito Nakamoto

IPC: G03G15/20

Abstract: A heater holding member circulatably guides a fixing belt and holds a heater that heats the fixing belt. A stay sheet metal reinforces the heater holding member. The heater holding member has a base plate and side walls. The stay sheet metal is placed on the base plate. A side wall is erected on either side of the base plate in a short direction thereof. A pocket which keeps the stay sheet metal is formed in each side wall. The stay sheet metal has a top plate and side plates. A side plate bends and extends from either edge of the top plate in a short direction thereof. A slit is formed in each side plate such that the side plates are kept in the pockets of the heater holding member.

公开(公告)号：US11422494B2

公开(公告)日：2022-08-23

申请号：US17325016

申请日：2021-05-19

Applicant: KYOCERA Document Solutions Inc.

Inventor： Yuhiro Sakai ,  Masakazu Uehara ,  Tomohiro Watatani ,  Fumito Nakamoto

IPC: G03G15/20

Abstract: A fixing device includes a fixing belt, a heater holding member, and a belt holding member. The fixing belt fixes a toner image to a sheet by heating the sheet. The heater holding member guides the fixing belt such that the fixing belt can peripherally rotate. The heater holding member holds a heater that heats the fixing belt. The belt holding member is fixed in position with respect to a conveyance path of the sheet and holds an end portion of the fixing belt in a rotation axis direction of the fixing belt such that the fixing belt can peripherally rotate. The belt holding member includes an engaging portion. The heater holding member includes an engaged portion that is engaged with the engaging portion to restrict a movement of the belt holding member with respect to the heater holding member.

公开(公告)号：US12181821B2

公开(公告)日：2024-12-31

申请号：US18343451

申请日：2023-06-28

Applicant: KYOCERA Document Solutions Inc.

Inventor： Yuhiro Sakai ,  Masakazu Uehara ,  Hironori Takahashi ,  Tomohiro Watatani ,  Shota Onishi

IPC: G03G15/20

Abstract: A fixing device according to the present disclosure includes a rotatable endless belt and an end portion holder. The end portion holder supports each of end portions of the fixing belt rotatably, and has a cylindrical part along which an inner circumferential surface of the fixing belt slides and an end wall part which faces an end surface of the fixing belt. The end wall part has a restraint part which faces an outer circumferential surface of the fixing belt with a predetermined interval and restrains the fixing belt from turning up.

公开(公告)号：US11796945B2

公开(公告)日：2023-10-24

申请号：US18049950

申请日：2022-10-26

Applicant: KYOCERA Document Solutions Inc.

Inventor： Tomohiro Watatani ,  Yuhiro Sakai

IPC: G03G15/20

CPC classification number: G03G15/2053

Abstract: A fixing device includes a fixing belt, a pressing roller, a flat heater, a heater holder and a pair of mounting members. The flat heater has a first surface coming into contact with an inner circumferential surface of the fixing belt and a second surface opposite to the first surface. The heater holder comes into contact with the second surface of the flat heater. The mounting members comes into contact with both end portions of the first surface of the flat heater in the width direction, and are mounted to the heater holder such that the flat heater is held between the mounting members and the heater holder. The mounting member includes a downstream side end surface contact part which comes into contact with a downstream side end surface of the flat heater in the conveying direction.

公开(公告)号：US11137705B2

公开(公告)日：2021-10-05

申请号：US17145260

申请日：2021-01-08

Applicant: KYOCERA Document Solutions Inc.

Inventor： Shunsaku Fujii ,  Takashi Eiki ,  Hiroki Kawasaki ,  Ryohei Tokunaga ,  Rina Kikukawa ,  Sadanori Nakae ,  Kotatsu Kawaguchi ,  Yuta Kitabayashi ,  Sara Fujikawa ,  Atsushi Kohama ,  Yuhiro Sakai

IPC: G03G15/20 ,  G03G21/16

Abstract: The fixing device includes a cylindrical heated member and a heating part. The cylindrical heated member is long in a width direction of a sheet, and is supported in a rotatable manner with coming into contact with a fixing face of the sheet. The heating part is provided in an inner space of the heated member and heating an inner circumferential face of the heated member. The heating part includes a plurality of heaters disposed side by side in a longitudinal direction of the heated member; and a first temperature sensor measuring a first heater of the plurality of heaters or a heated area of the heated member heated by the first heater. The plurality of heaters and the first temperature sensor are connected in series by a first power supply line.

公开(公告)号：US10969718B2

公开(公告)日：2021-04-06

申请号：US16887275

申请日：2020-05-29

Applicant: KYOCERA Document Solutions Inc.

Inventor： Tomohiro Watatani ,  Masakazu Uehara ,  Hironori Takahashi ,  Yuhiro Sakai ,  Fumito Nakamoto

IPC: G03G15/20 ,  B65G39/14

Abstract: A fixing device includes a fixing belt and a heating section. The heating section faces an inner circumferential surface of the fixing belt. The heating section includes a heater, a heater holding member, a reinforcing member, and at least one rotor. The heater heats the fixing belt. The heater holding member holds the heater. The reinforcing member reinforces the heater holding member. The at least one rotor faces the inner circumferential surface of the fixing belt. The at least one rotor is attached to the reinforcing member.

公开(公告)号：US10747155B2

公开(公告)日：2020-08-18

申请号：US16712175

申请日：2019-12-12

Applicant: KYOCERA Document Solutions Inc.

Inventor： Masakazu Uehara ,  Hironori Takahashi ,  Tomohiro Watatani ,  Yuhiro Sakai

IPC: G03G15/20

Abstract: In a fixing device, a heating section is disposed opposite to an inner circumferential surface of a fixing belt, and includes a heater, a heater holding member, a reinforcing member extending in a rotation axis of the pressure member, a heat sensitive body disposed on the heater holding member, and an urging member disposed between the reinforcing member and the heat sensitive body. The heater holding member includes an engaging portion engaging with a first end of the reinforcing member. In a state in which the reinforcing member is located opposite to the heater holding member through the reinforcing member turning about the engaging portion as a pivot, the urging member urges the heat sensitive body against the heater and a distance between the heat sensitive body and a second end of the reinforcing member is shorter than a distance between the heat sensitive body and the first end.