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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
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
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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.
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公开(公告)号：US20170205735A1
公开(公告)日：2017-07-20
申请号：US15407567
申请日：2017-01-17
Applicant: KYOCERA Document Solutions Inc.
Inventor： Yuta KITABAYASHI
IPC: G03G15/16
CPC classification number: G03G15/1665 , G03G15/1605 , G03G15/1675 , G03G2215/0132
Abstract: An image forming apparatus 1 includes four developing devices 43, four primary transfer rollers 51, an intermediate transfer belt 54, voltage applicators 61, a current detector 62 and a voltage controller 911. The voltage applicators 61 each apply a voltage to a corresponding one of the four primary transfer rollers 51. The current detector 62 detects a first total current value JS of currents flowing through the four primary transfer rollers 51. The voltage applicators 61 apply a detection voltage VS to a primary transfer roller 51y among the four primary transfer rollers 51 while applying a voltage having the same polarity as the detection voltage VS to all the other primary transfer rollers 51c, 51m, and 51k. The detection voltage VS is applied to detect a resistance value Ry of the primary transfer roller 51y. The detection voltage VS has a predetermined voltage value.
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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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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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Patent Agency Ranking
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：US20190265627A1
公开(公告)日：2019-08-29
申请号：US16235078
申请日：2018-12-28
Applicant: KYOCERA Document Solutions Inc.
Inventor： Yuta KITABAYASHI , Yoshihiro YAMAGISHI , Kenichi KASAMA , Koji UNO , Nobuyuki HAYASHI
Abstract: An image forming apparatus has an image forming portion, a fixing device, a temperature sensing device, and a control portion. The fixing device has a fixing member having a heated rotary member and a pressing member forming a fixing nip by making contact with the heated rotary member. The temperature sensing device senses the surface temperature of at least one of the heated rotary member and the pressing member in a plurality of regions in the axial direction. The control portion estimates the thickness distribution of the surface layer of at least one of the heated rotary member and the pressing member in the axial direction based on the time taken for the surface temperature in the plurality of regions to reach the predetermined temperature, and thereby estimates the lifetime of at least one of the heated rotary member or the pressing member based on the estimated thickness distribution.
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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：US20180335748A1
公开(公告)日：2018-11-22
申请号：US15953039
申请日：2018-04-13
Applicant: KYOCERA Document Solutions Inc.
Inventor： Tamotsu SHIMIZU , Yoshihiro YAMAGISHI , Akifumi YAMAGUCHI , Koji UNO , Kenichi KASAMA , Yuta KITABAYASHI , Nobuyuki HAYASHI
CPC classification number: G03G21/0058 , G03G5/005 , G03G5/14704 , G03G15/0865 , G03G15/5008 , G03G15/5037 , G03G15/55 , G03G15/751 , G03G21/0011 , G03G21/0064 , G03G2221/0089
Abstract: An image forming apparatus has a photosensitive member, a charging member, an exposing device, a developing device, a transfer member, a polishing member, a driving device, a voltage applying device, a torque detector, and a control portion. The photosensitive member has a photosensitive layer and a surface protection layer formed on the surface of the photosensitive layer. The polishing member has an elastic layer on its circumferential surface, and rotates with a linear velocity difference from that of the photosensitive member. The torque detector detects the torque of the driving device. The control portion estimates an attachment condition of discharge products to the surface of the photosensitive member based on the torque of the driving device detected by the torque detector. When the torque is equal to or higher than a predetermined value, the control portion performs an image degradation suppression process.
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