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公开(公告)号：US20240288811A1
公开(公告)日：2024-08-29
申请号：US18589060
申请日：2024-02-27
Applicant: KYOCERA Document Solutions Inc.
Inventor： Shunsaku FUJII , Ryohei TOKUNAGA , Akihiro KONDO , Yuta KITABAYASHI , Rina KIKUGAWA , Hiroki KAWASAKI , Yuto MASAOKA
IPC: G03G15/20
CPC classification number: G03G15/2064 , G03G15/205 , G03G15/2053 , G03G2215/2038
Abstract: An image forming apparatus includes an image forming device, a fixing device, and a controller. The fixing device includes a fixing belt, a heater, a pressure roller, a drive device, and a pressure adjustment mechanism that adjusts pressure to the nip region from the pressure roller, by switching between a normal level and a low level. When executing a print job, the controller causes the drive device to rotate the pressure roller, thereby causing the fixing belt to start to rotate, after causing the pressure adjustment mechanism to switch the pressure to the nip region to the low level, causes the pressure adjustment mechanism to switch the pressure to the nip region from the low level to the normal level, when a predetermined time has elapsed after the fixing belt started to rotate, and causes the image forming device to form an image according to the print job.
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公开(公告)号：US20240288806A1
公开(公告)日：2024-08-29
申请号：US18587012
申请日：2024-02-26
Applicant: KYOCERA Document Solutions Inc.
Inventor： Yuto MASAOKA , Yuta KITABAYASHI , Ryohei TOKUNAGA , Akihiro KONDO , Rina KIKUGAWA , Hiroki KAWASAKI , Shunsaku FUJII
CPC classification number: G03G15/2039 , G03G15/2053 , G03G15/2064 , G03G15/5004
Abstract: An image forming apparatus includes an image forming device, a fixing belt, a heater including a main heater and two sub heaters, a pressure member, a drive device, a main temperature sensor that detects a temperature of the main heater, a sub temperature sensor that detects a temperature of only one of the two sub heaters, a controller, and an abnormality decision device that decides whether a duty ratio adopted by the controller, to control the power amount to be supplied to the two sub heaters, is an appropriate value corresponding to a transport status of the recording medium in a regular transport mode. The controller executes, when the abnormality decision device decides that the duty ratio adopted to control the power amount to be supplied to the two sub heaters is not the appropriate value, a predetermined preventive operation for suppressing an excessive temperature increase of the heater.
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公开(公告)号：US20220276591A1
公开(公告)日：2022-09-01
申请号：US17680755
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
Abstract: A duration measuring section measures a plurality of times. A temperature measuring section measures a temperature of a heater at each of the times. A temperature information outputting section outputs heater temperature information. A temperature tendency computing section outputs temperature tendency information of the heater. A drive controller outputs linear velocity information for controlling the linear velocity of a pressure roller. A pressure roller drive section drives the pressure roller.
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公开(公告)号：US20200019099A1
公开(公告)日：2020-01-16
申请号：US16509737
申请日：2019-07-12
Applicant: KYOCERA Document Solutions Inc.
Inventor： Takashi EIKI , Hiroki KAWASAKI , Atsushi KOHAMA , Yuhiro SAKAI
IPC: G03G15/20
Abstract: A fixing device includes a cylindrical rotatable fixing belt, a flat heater, a safety device, a heater holding part and a pressuring member. The flat heater has a plurality of heat generating parts. The safety device is arranged across two adjacent heat generating parts to interrupt power supply to the heat generating parts in a case where temperature reaches a threshold value. The heater holding part holds the flat heater so that the flat heater comes into contact with an inner circumference face of the fixing belt. The pressuring member sandwiches the fixing belt with the flat heater to form a pressuring area for sandwiching and conveying a sheet between the fixing belt and the pressuring roller.
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公开(公告)号：US20240427268A1
公开(公告)日：2024-12-26
申请号：US18754132
申请日：2024-06-25
Applicant: KYOCERA Document Solutions Inc.
Inventor： Hiroki KAWASAKI , Ryohei TOKUNAGA , Akihiro KONDO , Yuta KITABAYASHI , Rina KIKUGAWA , Shunsaku FUJII , Yuto MASAOKA
IPC: G03G15/20
Abstract: A heater heats a fixing belt in contact with an inner surface of the fixing belt. The fixing belt is formed into a cylindrical shape and rotates around an axis. The heater includes a substrate and a plurality of resistance heat generating elements. The substrate is made of insulator, and elongated in the axial direction. The resistance heat generating elements are arranged on one surface of the substrate facing the inner surface of the fixing belt with gaps in the axial direction, and generate heat by being supplied with power. A relationship between the gap G (mm) and a heat conductivity λ [W/m·K] of the inner surface of the fixing belt satisfies λ≥138G-36.
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Patent Agency Ranking
公开(公告)号：US20220317607A1
公开(公告)日：2022-10-06
申请号：US17704668
申请日：2022-03-25
Applicant: KYOCERA Document Solutions Inc.
Inventor： Tomohiro WATATANI , Yuhiro SAKAI , Takashi EIKI , Ryohei TOKUNAGA , Akihiro KONDO , Yuta KITABAYASHI , Rina KIKUGAWA , Hiroki KAWASAKI , Shunsaku FUJII , Tei TO
Abstract: A temperature detection section is disposed opposite to a heater so as to be out of contact with the heater, and detects a temperature of the heating element. A spacer is disposed so that the heater and the temperature detection section are out of contact with each other. The spacer includes a separator that separates the temperature detection section from the heater and that has a gap through which the heat is transferred from the heater to the temperature detection section and that melts upon the temperature of the heating element increasing to a specific temperature or higher. The separator after melting fills the gap.
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公开(公告)号：US20220308507A1
公开(公告)日：2022-09-29
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
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.
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公开(公告)号：US20210216029A1
公开(公告)日：2021-07-15
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
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.
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公开(公告)号：US20190146388A1
公开(公告)日：2019-05-16
申请号：US16183915
申请日：2018-11-08
Applicant: KYOCERA Document Solutions Inc.
Inventor： Hiroki KAWASAKI , Takashi EIKI , Kotatsu KAWAGUCHI , Ryohei TOKUNAGA , Atsushi KOHAMA , Yuhiro SAKAI , Sadanori NAKAE , Yuta KITABAYASHI , Shunsaku FUJII
Abstract: A heating unit includes a circuit board, a plurality of heating parts, and a plurality of wiring parts. The heating parts are arranged in a first direction on a surface of the circuit board. The wiring parts are provided on the surface of the circuit board and electrically connect the heating parts and a power source to feed the heating parts. The wiring parts respectively include electrode terminal parts electrically connected to the power source outside the heating parts in the first direction. Sizes in a second direction orthogonal to the first direction of the heating parts are set to decrease gradually or stepwisely with separating in the first direction from the electrode terminal parts.
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公开(公告)号：US20190056685A1
公开(公告)日：2019-02-21
申请号：US16101395
申请日：2018-08-11
Applicant: KYOCERA Document Solutions Inc. , KYOCERA Corporation
Inventor： Takashi EIKI , Hiroki KAWASAKI , Ryohei TOKUNAGA , Atsushi KOHAMA , Yuhiro SAKAI , Kotatsu KAWAGUCHI , Hidenobu NAKAGAWA
CPC classification number: G03G15/2053 , G03G15/0865 , G03G15/16 , G03G15/2028 , G03G15/2042
Abstract: A heating unit includes a circuit board, heating parts, and electrode parts. The heating parts are arranged in a first direction on a surface of the circuit board. The electrode parts are disposed on the surface of the circuit board, and electrically connected to both sides of the heating parts in a second direction that is orthogonal to the first direction. Each of the heating parts includes a plurality of heating resistors that is arranged in the first direction. Each of the heating resistors has a size ratio of a first length in the second direction to a second length in the first direction is 1 or more and 100 or less.
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