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    Ceramic member for semiconductor manufacturing equipment
    4.
    发明授权
    Ceramic member for semiconductor manufacturing equipment 有权
    半导体制造设备用陶瓷件

    公开(公告)号：US07022636B2

    公开(公告)日：2006-04-04

    申请号：US10263460

    申请日：2002-10-02

    申请人： Toshiyuki Hamada ,  Masahiro Nakahara

    发明人： Toshiyuki Hamada ,  Masahiro Nakahara

    IPC分类号： C04B35/505 ,  C04B35/111

    CPC分类号： C04B35/117 ,  C04B35/44 ,  C04B2235/3217 ,  C04B2235/3222 ,  C04B2235/3224 ,  C04B2235/3225 ,  C04B2235/5409 ,  C04B2235/5436 ,  C04B2235/5445 ,  C04B2235/658 ,  C04B2235/72 ,  C04B2235/786 ,  C04B2235/80 ,  C04B2235/96 ,  C04B2235/9607 ,  C04B2235/9692

    摘要： There is provided a ceramic member for semiconductor manufacturing equipment which is formed of an alumina-based sinter containing an yttrium-aluminum-garnet at the amount of 3 to 50 wt %, silicon oxide at the amount of not more than 0.2 wt %, preferably 0.1 wt %, and the balance substantially alumina, wherein the sinter has dielectric loss of not more than 4×10−4 particularly 2.5×10−4 or less in the frequency range of 10 MHz to 5 GHz. Such a member may be formed of a ceramic sinter including an aluminum phase having mean crystal grain size in a range of 2 to 10 μm and a yttrium-aluminum-garnet phase having a mean crystal grain size in a range of 1.5 to 5 μm, wherein the ratio of the mean crystal grain size of the alumina phase to that of the yttrium-aluminum-garnet phase is larger than 1 and smaller than 7.

    摘要翻译： 提供了一种用于半导体制造设备的陶瓷构件，其由含有3至50重量％的钇铝石榴石的氧化铝基烧结体形成，氧化硅的量不超过0.2重量％ 0.1重量％，余量基本上为氧化铝，其中烧结体在10的频率范围内的介电损耗不大于4×10 -4，特别是2.5×10 -4 -4以下 MHz至5 GHz。 这种构件可以由包括平均晶粒尺寸在2至10μm的铝相和具有1.5至5μm的平均晶粒尺寸的钇铝 - 石榴石相的铝相的陶瓷烧结体形成， 其中氧化铝相的平均结晶粒径与钇 - 铝 - 石榴石相的平均晶粒尺寸比大于1且小于7。

    Control for a fixing device in an image forming apparatus
    5.
    发明授权
    Control for a fixing device in an image forming apparatus 有权
    图像形成装置中的定影装置的控制

    公开(公告)号：US06810220B2

    公开(公告)日：2004-10-26

    申请号：US10407268

    申请日：2003-04-07

    申请人： Toshiyuki Hamada ,  Makoto Eki ,  Yuzuru Nanjo ,  Takashi Maekawa

    发明人： Toshiyuki Hamada ,  Makoto Eki ,  Yuzuru Nanjo ,  Takashi Maekawa

    IPC分类号： G03G1520

    CPC分类号： G03G15/205

    摘要： An image forming apparatus which includes a fixing device including a fixing roller, a pressure roller pressed into contact with the fixing roller, and a thermistor in contact with a non-paper-passage region on the surface of the fixing roller, the fixing roller incorporating a first halogen heater whose heat distribution based on the axial direction of the fixing roller is set such that heat in a middle region thereof is higher than heat in opposite-end regions thereof, and a second halogen heater whose heat distribution based on the axial direction of the fixing roller is set such that heat in opposite-end regions thereof is higher than heat in a middle region thereof; and a controller for controlling power supply to the first and second halogen heaters. The controller starts power supply to the first and second halogen heaters to start warm-up of the fixing device, and cuts off power supply to the first halogen heater for a predetermined period of time during the warm-up.

    摘要翻译： 一种图像形成装置，其包括定影装置，该定影装置包括定影辊，与定影辊接触的加压辊，以及与定影辊表面上的非纸通道区域接触的热敏电阻， 第一卤素加热器，其定影辊的轴向的热分布被设定为使得其中间区域的热量高于其相对端部区域的热量;以及第二卤素加热器，其热分布基于轴向 定影辊的相对端部区域的热量比中间区域的热量高; 以及控制器，用于控制对第一和第二卤素加热器的电力供应。 控制器开始向第一和第二卤素加热器供电以启动定影装置的预热，并且在预热期间切断对第一卤素加热器的电源预定时间段。

    Image forming apparatus with cleanable transfer roller
    6.
    发明授权
    Image forming apparatus with cleanable transfer roller 有权
    具有可清洁转印辊的成像设备

    公开(公告)号：US06275671B1

    公开(公告)日：2001-08-14

    申请号：US09467261

    申请日：1999-12-20

    申请人： Toshiyuki Hamada ,  Tetsuro Tomoe ,  Tadahiro Kiyosumi ,  Naoyuki Ishida

    发明人： Toshiyuki Hamada ,  Tetsuro Tomoe ,  Tadahiro Kiyosumi ,  Naoyuki Ishida

    IPC分类号： G03G2100

    CPC分类号： G03G15/168 ,  G03G15/167 ,  G03G2215/1652

    摘要： A transfer roller is spaced away from the outer surface of a photosensitive drum by a specified distance to prevent the abrasion and damage of the photosensitive drum by the contact of the transfer roller and the photosensitive drum. The transfer roller not in contact with the photosensitive drum can be formed to have a sufficient hardness without damaging the outer surface of the photosensitive drum. Further, since the transfer roller has a sufficient hardness, cleaning blades can be held in without damaging the transfer roller with a sufficiently large force without damaging the transfer roller, thereby securely scraping off toner and the line adhered to the transfer roller and preventing the rear surface of a transfer sheet from being smeared.

    摘要翻译： 转印辊与感光鼓的外表面间隔一定距离，以防止感光鼓通过转印辊和感光鼓的接触而磨损和损坏。 不与感光鼓接触的转印辊可以形成为具有足够的硬度而不损坏感光鼓的外表面。 此外，由于转印辊具有足够的硬度，因此可以以足够大的力将清洁刮刀保持在不会损坏转印辊的同时不会损坏转印辊，从而可靠地刮除调色剂和附着在转印辊上的线，并防止转印辊的后部 转印片的表面被弄脏。