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    • 3. 发明授权
    • Electrostatic-image developer and image forming process
    • 静电图像显影剂和成像工艺
    • US5693444A
    • 1997-12-02
    • US762875
    • 1996-12-12
    • Masahiro TakagiAkihiro IizukaSatoru IshigakiMasanori Ichimura
    • Masahiro TakagiAkihiro IizukaSatoru IshigakiMasanori Ichimura
    • G03G9/08G03G9/087G03G9/09G03G9/097G03G9/107G03G9/113
    • G03G9/0819G03G9/097G03G9/107
    • An electrostatic-image developer which comprises a toner and a carrier comprising core particles coated with a coating resin, wherein the toner comprises toner particles having a volume-average particle diameter of from 3 to 9 .mu.m and having a specific particle diameter distribution, at least 20% of the total surface area of the toner particles is covered with (a) an external additive having an average particle diameter of from 20 nm to 100 nm, and at least 40% of the total surface area of the toner particles is covered with (b) an external additive having an average particle diameter of from 7 nm to 20 nm, and wherein the core particles of the carrier are magnetic particles formed from a composition comprising 100 parts by weight of a ferrite component represented by the following formula (3): (M.sub.y O).sub.100-x (Fe.sub.2 O.sub.3).sub.x (3) (wherein M is a metal atom selected from the group consisting of Li, Mg, Ca and Mn; x is from 45 to 95 mol %; and y is 1 or 2) and from 0.01 to 10 parts by weight of an oxide of at least one element selected from the group consisting of Groups IA, IIA, IIIA, IVA, VA, IIIB, IVB, and VB of the periodic table by granulating the composition and sintering the granules, and the magnetic particles have a silicon content of from 500 to 5,000 ppm. An image forming process using the developer is also disclosed.
    • 一种静电图像显影剂,其包含调色剂和载体,所述载体包含涂覆有涂层树脂的芯颗粒,其中所述调色剂包含体积平均粒径为3至9μm并具有特定粒径分布的调色剂颗粒, 调色剂颗粒的总表面积的至少20%用(a)平均粒径为20nm至100nm的外部添加剂覆盖,并且调色剂颗粒的总表面积的至少40%被覆盖 (b)平均粒径为7nm〜20nm的外部添加剂,其中载体的核心颗粒是由包含100重量份由下式表示的铁氧体组分的组合物形成的磁性颗粒( 3):( MyO)100-x(Fe 2 O 3)x(3)(其中M为选自Li,Mg,Ca和Mn的金属原子; x为45〜95摩尔%,y为1 或2)和0.01至10重量份的氧化物 e的至少一种选自元素周期表的IA,IIA,IIIA,IVA,VA,IIIB,IVB和VB族的元素,通过将组合物制粒并烧结颗粒,并且磁性颗粒具有硅含量 为500〜5000ppm。 还公开了使用显影剂的成像方法。
    • 7. 发明申请
    • RADIO COMMUNICATION APPARATUS, COMPUTER READABLE STORAGE MEDIUM, AND RADIO COMMUNICATION SYSTEM
    • 无线电通信设备,计算机可读存储介质和无线电通信系统
    • US20110044302A1
    • 2011-02-24
    • US12438845
    • 2008-12-18
    • Kiyoshi ToshimitsuMasahiro TakagiRyoko MatsuoToshihisa NabetaniTatsuma HiranoTomoko Adachi
    • Kiyoshi ToshimitsuMasahiro TakagiRyoko MatsuoToshihisa NabetaniTatsuma HiranoTomoko Adachi
    • H04W40/00
    • H04W72/02H04W16/14
    • In a radio communication system that simultaneously uses plural radio channels (STA1), a radio communication apparatus (11-15; 20-25) can quickly secure plural radio channels simultaneously used for radio communication while preventing collision with a radio signal transmitted by another radio communication apparatus so away from the radio communication apparatus that the radio communication apparatus cannot detect radio waves. A radio communication apparatus STA1 according to the present invention includes a receiving unit 10 which receives, when a first signal is transmitted via each of the plural radio channels (21-25), the first signal though at least one or more radio channels among the plural radio channels (11-15), and performs carrier sense for each of the plural radio channels used for the transmission of the first signal, a selecting unit 40 which selects a radio channel used for radio communication out of radio channels set in a standby state, and transmitting unit 20 which transmits a response signal for the first signal via the selected radio channel.
    • 在同时使用多个无线电信道(STA1)的无线电通信系统中,无线电通信装置(11-15; 20-25)可以快速地固定同时用于无线电通信的多个无线电信道,同时防止与另一个无线电台发送的无线电信号的冲突 通信装置远离无线电通信装置,无线电通信装置不能检测无线电波。 根据本发明的无线电通信装置STA1包括:接收单元10,当经由多个无线电信道(21-25)中的每一个发送第一信号时,接收单元10通过至少一个或多个无线电信道接收第一信号 多个无线电信道(11-15),并且对于用于发送第一信号的多个无线电信道中的每一个执行载波侦听;选择单元40,其从设置在待机状态的无线电信道中选择用于无线电通信的无线电信道 状态和发送单元20,其经由所选择的无线电信道发送用于第一信号的响应信号。