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    ESTIMATING DEVICE, ESTIMATING METHOD, ESTIMATING PROGRAM, AND LEARNING MODEL GENERATING DEVICE
    1.
    发明申请
    ESTIMATING DEVICE, ESTIMATING METHOD, ESTIMATING PROGRAM, AND LEARNING MODEL GENERATING DEVICE 有权

    公开(公告)号：US20250044072A1

    公开(公告)日：2025-02-06

    申请号：US18718064

    申请日：2022-07-12

    Applicant: BRIDGESTONE CORPORATION

    Inventor： Hajime KITANO ,  Yasumichi WAKAO ,  Toshimitsu SHINOHARA ,  Yoshihiko ONIKI ,  Yusuke FUJISAWA

    IPC: G01B7/16 ,  G01N27/04

    Abstract: An estimating device, including: a detecting section detecting electrical characteristics between a plurality of predetermined detection points at a flexible material, which is electrically conductive and which has electrical characteristics that vary in accordance with deformation, of a target object that has the flexible material; and an estimating section that inputs time-series electrical characteristics, which were detected by the detecting section, of an object of estimation to a learning model that is trained by using, as learning data, time-series electrical characteristics that vary in accordance with deformation of the flexible material, and deteriorated state information expressing a deteriorated state relating to deformation of the flexible material, such that the time-series electrical characteristics are inputs of the learning model and the learning model outputs the deteriorated state information, and the estimating section estimates deteriorated state information expressing a deteriorated state corresponding to inputted time-series electrical characteristics.

    ROLLER, METHOD FOR MANUFACTURING SAME AND IMAGE FORMING DEVICE USING SAME
    2.
    发明申请
    ROLLER, METHOD FOR MANUFACTURING SAME AND IMAGE FORMING DEVICE USING SAME 审中-公开
    辊，其制造方法和使用其的图像形成装置

    公开(公告)号：US20160018751A1

    公开(公告)日：2016-01-21

    申请号：US14771248

    申请日：2014-03-05

    Applicant: BRIDGESTONE CORPORATION

    Inventor： Shogo IMAI ,  Yusuke FUJISAWA ,  Yusuke KAMIJO

    IPC: G03G15/08 ,  B21D53/00 ,  F16C13/00

    CPC classification number: G03G15/00 ,  G03G15/0233 ,  G03G15/0818 ,  G03G15/1685

    Abstract: Provided are a roller capable of suppressing the generation of cutting waste from the cut surface of a foam layer at the end of the roller in the axial direction thereof, a method of manufacturing especially a conductive roller, and an image forming device using the roller. The roller is provided with a shaft 1, and a foam layer 2 and at least one film layer 3, sequentially provided on the outer periphery of the shaft. The foam layer and film layer are cut at both ends of the roller in the axial direction thereof, and a filler layer 4 for covering at least the foam layer is provided on the cut surface of the foam layer and film layer.

    Abstract translation: 本发明提供一种能够抑制从滚筒端部的发泡层的切断面沿其轴向产生切割废料的产生辊，特别是导电性辊的制造方法以及使用该辊的图像形成装置。 辊设置有轴1和泡沫层2和至少一个膜层3，其依次设置在轴的外周上。 泡沫层和膜层在辊的两端沿其轴向切割，并且在泡沫层和膜层的切割表面上设置用于覆盖至少泡沫层的填充层4。

    ROLLER AND IMAGE FORMING APPARATUS USING SAME
    3.
    发明申请
    ROLLER AND IMAGE FORMING APPARATUS USING SAME 有权

    公开(公告)号：US20170308000A1

    公开(公告)日：2017-10-26

    申请号：US15507953

    申请日：2015-08-28

    Applicant: BRIDGESTONE CORPORATION

    Inventor： Yusuke FUJISAWA

    IPC: G03G15/08

    CPC classification number: G03G15/0808 ,  F16C13/00 ,  G03G15/0233 ,  G03G15/0818 ,  G03G15/1685 ,  G03G21/0058

    Abstract: Provided is a roller capable of suppressing generation of cut waste from an end of a roller due to contact with another member inside a device when mounted on an image forming device, particularly a conductive roller, and an image forming device using the same. A roller includes a shaft 1 and a base layer 2 provided on the outer periphery of the shaft. A filler layer 4 covering the base layer is provided on end faces of both ends of the base layer in the roller axial direction, and the filler layer is composed of a material having a breaking strain measured according to a tensile test of JIS K 7127 of not less than 120% and a tensile stress at 100% elongation measured according to a tensile test of JIS K 7127 of from 5 to 30 N/mm2.

    DEVELOPING ROLLER
    5.
    发明申请
    DEVELOPING ROLLER 有权

    公开(公告)号：US20210088930A1

    公开(公告)日：2021-03-25

    申请号：US17024696

    申请日：2020-09-18

    Applicant: BRIDGESTONE CORPORATION

    Inventor： Yusuke FUJISAWA ,  Sotaro YAMASHITA

    IPC: G03G15/08

    Abstract: Provided are a developing roller which includes a shaft, and a base layer and a surface layer sequentially formed on an outer peripheral portion of the shaft in a radial direction, where 1) a low-resilience layer is disposed between the base layer and the surface layer, 2) the low-resilience layer has a loss tangent tan δ value that is larger than a loss tangent tan δ value of any of the base layer and the surface layer when measured under conditions of a temperature of 23° C., an amplitude of ±20 μm, and a frequency of 6 Hz, and 3) the developing roller has an Asker C hardness and thickness value of 500 or less, which is defined by the following formula (1): Asker C hardness and thickness value of the developing roller=Asker C hardness of the developing roller×(thickness of the developing roller+6)  (1).

    ROLLER AND IMAGE FORMING APPARATUS USING SAME
    6.
    发明申请
    ROLLER AND IMAGE FORMING APPARATUS USING SAME 有权

    公开(公告)号：US20170285513A1

    公开(公告)日：2017-10-05

    申请号：US15508646

    申请日：2015-08-28

    Applicant: BRIDGESTONE CORPORATION

    Inventor： Yusuke FUJISAWA

    IPC: G03G15/08

    CPC classification number: G03G15/0808 ,  F16C13/00 ,  G03G15/0233 ,  G03G15/0818 ,  G03G15/1685 ,  G03G21/0058

    Abstract: Provided is a roller, in particular a conductive roller, capable of suppressing generation of cut debris from a cut surface of an end part of a foam layer in the roller axial direction over a long period of time, and an image forming device using the roller. A roller includes a shaft 1, a foam layer 2 and at least one film layer 3 sequentially provided on the outer periphery of the shaft. Both end parts in the roller axial direction of the foam layer and the film layer are cut, a filler layer 4 is provided on the cut surface of the cut foam layer and the cut film layer, at least the cut surface of the foam layer is covered with the filler layer, and the filler layer contains a water-based urethane resin.

    ESTIMATING DEVICE, ESTIMATING METHOD, AND ESTIMATING PROGRAM
    7.
    发明公开
    ESTIMATING DEVICE, ESTIMATING METHOD, AND ESTIMATING PROGRAM 审中-公开

    公开(公告)号：US20240286278A1

    公开(公告)日：2024-08-29

    申请号：US18570640

    申请日：2022-07-12

    Applicant: BRIDGESTONE CORPORATION

    Inventor： Hajime KITANO ,  Yasumichi WAKAO ,  Hitoshi YASUI ,  Masahiro YAMAGUCHI ,  Hirohito SUGINO ,  Yusuke FUJISAWA

    IPC: B25J9/16 ,  B25J13/08 ,  B25J15/12 ,  B25J19/02

    CPC classification number: B25J9/163 ,  B25J9/161 ,  B25J9/1612 ,  B25J13/083 ,  B25J15/12 ,  B25J19/02

    Abstract: An estimating device including, a detecting section detecting electrical characteristics between a plurality of predetermined detection points of a flexible material, the electrical characteristics of the flexible material varying in accordance with changes in applied pressure, and that is disposed can cover a portion of a projecting portion, an estimating section that inputs time-series electrical characteristics to a learning model that is trained by using, as learning data, time-series electrical characteristics at times when pressure is applied to the flexible material, and applied stimulus state information expressing applied stimulus states in which pressure is applied to the flexible material, such that the time-series electrical characteristics are inputs of the learning model and the learning model outputs the applied stimulus state information, and the estimating section estimates applied stimulus state information expressing an applied stimulus state corresponding to the inputted time-series electrical characteristics.

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