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27894 条记录 (耗时 0.051 秒)

    Optical deflector with a pneumatic and a magnetic bearing
    1.
    发明授权
    Optical deflector with a pneumatic and a magnetic bearing 失效
    光学偏转器带有气动和磁性轴承

    公开(公告)号：US4726640A

    公开(公告)日：1988-02-23

    申请号：US911110

    申请日：1986-09-24

    申请人： Akihiko Iwama ,  Hiroki Tajima ,  Mitsuo Suzuki

    发明人： Akihiko Iwama ,  Hiroki Tajima ,  Mitsuo Suzuki

    IPC分类号： F16C39/06 ,  G02B7/182 ,  G02B26/12 ,  H02K5/16 ,  H02K7/09 ,  G02B26/08

    CPC分类号： F16C32/0402 ,  F16C17/026 ,  F16C32/0427 ,  G02B26/121 ,  G02B7/1821 ,  H02K5/1677 ,  H02K7/09 ,  F16C2370/22

    摘要： An optical deflector for deflecting a laser beam from a laser by rotating a polygon mirror uses a dynamic pressure pneumatic bearing as a radial bearing and a magnetic bearing as a thrust bearing. The deflector includes a hollow rotor rotatable integrally with the mirror, a stationary shaft received in said hollow rotor, a casing member accommodating the rotor and stationary shaft, and an annular rotor magnet assembly mounted on the outer periphery of the rotor. A first rotary magnet is mounted in an upper end portion of a rotary shaft and a first stationary magnet in an upper end portion of the stationary shaft in such a manner as to face each other with the same polarity, a repulsive force acting between the two magnets serving as a thrust magnetic bearing. A second stationary magnet is arranged to face the first rotary magnet with the same polarity. Further, a second rotary magnet is mounted in a lower end portion of the rotary shaft and a third stationary magnet in a lower end portion of the stationary shaft in such a manner as to face each other with the same polarity.

    摘要翻译： 用于通过旋转多面镜从激光器偏转激光束的光学偏转器使用动压气动轴承作为径向轴承和磁轴承作为推力轴承。 偏转器包括与反射镜一体旋转的中空转子，容纳在所述中空转子中的固定轴，容纳转子和固定轴的壳体构件以及安装在转子的外周上的环形转子磁体组件。 第一旋转磁体以相同的极性彼此面对的方式安装在旋转轴的上端部和固定轴的上端部中的第一固定磁体，作用在两者之间的排斥力 磁铁作为推力磁轴承。 第二固定磁体被布置成以相同的极性面向第一旋转磁体。 此外，第二旋转磁体以相同极性彼此面对的方式安装在旋转轴的下端部和固定轴的下端部中的第三静止磁体。

    Tissue paper used for heat-sensitive stencil sheet, heat-sensitive stencil sheet, and method of making the same
    2.
    发明申请
    Tissue paper used for heat-sensitive stencil sheet, heat-sensitive stencil sheet, and method of making the same 有权
    用于热敏蜡纸，热敏蜡纸的组织纸及其制造方法

    公开(公告)号：US20030031855A1

    公开(公告)日：2003-02-13

    申请号：US10077455

    申请日：2002-02-14

    申请人： Ricoh Company, Ltd. and Tohoku Ricoh Company, Ltd.

    发明人： Hideyuki Yamaguchi

    IPC分类号： B32B005/14

    CPC分类号： B41N1/241 ,  B41N1/243 ,  D21H25/06 ,  D21H27/30 ,  Y10T428/24802 ,  Y10T428/24826 ,  Y10T428/249924 ,  Y10T428/249953 ,  Y10T428/249959 ,  Y10T428/31993

    摘要： A tissue paper used for heat sensitive stencil sheet to be used for a heat-sensitive stencil sheet comprising natural fibers, synthetic fibers, or their mixture, which being impregnated with an ionizing radiation curable type of resin, and a heat-sensitive stencil sheet having a thermoplastic resin film being bonded thereto, wherein, at surface of one side of the resin film, there is provided the tissue paper used for heat-sensitive stencil sheet, which is that being bonded the thermoplastic resin film by point-bonding with using an ionizing radiation-curable resin, and there is provided an anti-sticking layer on the other side of the thermoplastic resin film.

    摘要翻译： 用于热敏蜡纸的薄纸用于热敏蜡纸，包括用电离辐射固化型树脂浸渍的天然纤维，合成纤维或其混合物，以及热敏蜡纸，其具有 粘合有热塑性树脂薄膜的树脂薄膜的一侧的表面设有用于热敏蜡纸的薄纸，其是通过点粘合将热​​塑性树脂薄膜与 电离辐射固化树脂，并且在热塑性树脂膜的另一侧上设置有防粘层。

    Optical element, display system, and mobile object
    4.
    发明授权
    Optical element, display system, and mobile object 有权

    公开(公告)号：US11635618B2

    公开(公告)日：2023-04-25

    申请号：US16966706

    申请日：2019-04-15

    申请人： RICOH COMPANY, LTD.

    发明人： Kento Nakamura ,  Shimpei Ogino ,  Yuuki Satoh

    IPC分类号： G02B26/08 ,  G02B27/01 ,  B60K35/00 ,  G02B3/00 ,  G02B26/10

    摘要： A display system includes an optical element through which light diverges and an imaging optical system configured to form an image by projecting diverging light diverging through the optical element. In the display system, the image formed by the imaging optical system is visually recognized by a viewer, and a condition in an equation tan 0≥(T×B)/(S×O) is satisfied, where θ denotes a divergence angle of the optical element, T denotes distance between the image forming optical system and the formed image, B denotes a range of an eye box that is an area through which the formed image can visually be recognized, S denotes distance between the formed image and a viewpoint of the viewer of the formed image, and O denotes distance between the optical element and the image forming optical system. In the above equation, each distance indicates length of an optical path that passes through a center of an image formed by the light when an object is observed from a reference eyepoint.

    Liquid composition set, cured product forming method, and liquid composition
    6.
    发明授权
    Liquid composition set, cured product forming method, and liquid composition 有权

    公开(公告)号：US11629262B2

    公开(公告)日：2023-04-18

    申请号：US16984294

    申请日：2020-08-04

    申请人： RICOH COMPANY, LTD.

    发明人： Takao Hiraoka

    IPC分类号： C09D11/30 ,  C09D11/107 ,  C09D11/54

    摘要： In accordance with some embodiment of the present invention, a liquid composition set is provided. The liquid composition set includes a first liquid composition and a second liquid composition. The first liquid composition comprises: a compound represented by general formula (1): where X and Y each independently represent a functional group, and at least one of X and Y represents an electron-withdrawing functional group; and an acidic substance. The second liquid composition comprises a compound having vinyl group or acryloyl group.

    Liquid ejection apparatus, liquid ejection system, and liquid ejection method
    8.
    发明授权
    Liquid ejection apparatus, liquid ejection system, and liquid ejection method 有权

    公开(公告)号：US11618250B2

    公开(公告)日：2023-04-04

    申请号：US17069103

    申请日：2020-10-13

    申请人： Ricoh Company, Ltd.

    发明人： Tsuyoshi Nagasu ,  Tomoaki Hayashi ,  Masayuki Sunaoshi ,  Koichi Kudo ,  Masahiro Mizuno

    IPC分类号： B41J2/045 ,  B41J2/21 ,  B41J15/04 ,  B41J25/00 ,  G01B11/00

    摘要： A liquid ejection apparatus includes a plurality of liquid ejection head units that eject liquid onto a conveyed object at different positions along a conveying path; a first support member and a second support member that are respectively provided at an upstream side and a downstream side of a landing position of liquid ejected by a corresponding liquid ejection head unit; a first detection unit that is installed between the first support member and the second support member and is configured to detect a position of the conveyed object in a direction orthogonal to a conveying direction of the conveyed object; a second detection unit that is installed upstream of the first detection unit; and a movement control unit that moves each liquid ejection head unit based on a plurality of detection results output by the first detection unit and/or the second detection unit.

    Image forming apparatus
    9.
    发明授权
    Image forming apparatus 有权

    公开(公告)号：US11599061B2

    公开(公告)日：2023-03-07

    申请号：US17888489

    申请日：2022-08-16

    申请人： Ricoh Company, Ltd.

    发明人： Kei Saito ,  Tomoya Adachi ,  Yuusuke Furuichi

    IPC分类号： G03G21/20

    摘要： An image forming apparatus includes a heating device including a heater, a developing device, and an airflow generation device. The heater includes a base, a heat generator, an electrode portion, and conductive portions. The conductive portions are disposed on one side and another side in a longitudinal direction in a heat generation region and spaced apart in a lateral direction intersecting the longitudinal direction. A maximum total value among total values of squares of current flowing in the conductive portions at longitudinal positions on the one side is larger than that on said another side. The developing device includes a rotating member and sliding portions. A sliding portion having highest temperature in operation is disposed on one side of the developing device being same as the one side of the heater in the longitudinal direction. The airflow generation device generates an airflow toward the one side of the developing device.