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    • 5. 发明授权
    • Halftone image ion printer
    • 半色调图像离子打印机
    • US5687001A
    • 1997-11-11
    • US7143
    • 1993-01-21
    • Akira ShibuyaHiroyuki KadowakiTomohiro ShinboMasayuki Iijima
    • Akira ShibuyaHiroyuki KadowakiTomohiro ShinboMasayuki Iijima
    • H04N1/40G01D15/06
    • H04N1/40043H04N1/40056H04N1/40081
    • The invention makes it possible to drive a halftone image device and achieve high halftone reproduction by allowing at least one of the leading and trailing edges of a pulse width-modulated signal applied to a recording head, or forming amplitude- and width-modulated pulses, respectively, as driving pulses for placing one dot under halftone control, and changing pulse width modulation in a stepwise manner, using the pulse width of the amplitude-modulated pulse as a unit pulse width. The invention intends to achieve high-voltage and high-speed pulse output and low power consumption by converting input data such as halftone image data to a voltage signal, superposing pulse voltages of opposite polarities and applying the resulting signal to a switching circuit constituting an output state in the form of a switching signal, and also makes it possible to achieve high speed and high-voltage driving by connecting at least one of equivalent two-terminal elements in series to at least one of the respective driving elements of a complementary FET driving circuit, said equivalent two-terminal elements are each turned on with a current of a certain or higher value passing therethrough to show constant-voltage characteristics and turned off with a current of a certain or lower value passing therethrough to become a constant resistance.
    • 本发明通过允许施加到记录头的脉冲宽度调制信号的前沿和后沿中的至少一个或形成幅度和宽度调制脉冲,驱动半色调图像装置并实现高半色调再现, 作为用于在半色调控制下放置一个点的驱动脉冲,并且以幅度调制脉冲的脉冲宽度为单位脉冲宽度逐步改变脉宽调制。 本发明旨在通过将诸如半色调图像数据的输入数据转换为电压信号来实现高电压和高速脉冲输出以及低功耗,从而叠加具有相反极性的脉冲电压,并将所得到的信号施加到构成输出的开关电路 状态,并且还可以通过将等效的两端元件中的至少一个串联连接到互补FET驱动的各个驱动元件中的至少一个而实现高速和高电压驱动 电路中,所述等效的两端子元件各自以通过其中的一定或更高值的电流接通以显示恒定电压特性,并且通过其中通过的一定或更低值的电流变为恒定电阻。
    • 7. 发明授权
    • Electrostatic information-recording media and process for recording and
reproducing electrostatic information
    • US5571646A
    • 1996-11-05
    • US560468
    • 1995-11-17
    • Minoru UtsumiHiroyuki ObataSeiji TakeMasayuki IijimaHironori Kamiyama
    • Minoru UtsumiHiroyuki ObataSeiji TakeMasayuki IijimaHironori Kamiyama
    • G03G5/02G03G15/22G11B9/08G11B11/08G03G5/147
    • G03G15/221G03G15/04072G03G5/02G11B11/08G11B9/08
    • The present invention provides an electrostatic information-recording medium including an electrode layer (13) and a charge-retaining layer, in which said charge-retaining layer is formed of a laminate of a resin layer (11a) having a low glass transition temperature with a heat-resistant, insulating layer (11b), or an electrostatic information-recording medium comprising at least an electrode layer (13) and a charge-retaining layer (11) in which said charge-retaining layer (11) is formed of a polymer layer (12) containing pentafluorostyrene as a monomer component and having a weight-average molecular weight of 10,000 to 2,000,000, or which includes a photoconductive layer (44) and a charge-retaining layer (43) between a pair of electrodes (42) and (45) and is designed to carry out exposure with the application of voltage between both said electrodes (42) and (45) or apply voltage between both said electrodes (42) and (45) while exposure is carried out, thereby forming an electrostatic latent image, which is then carried on said charge-regaining layer (43) by releasing said charge-retaining layer (43) from said electrode 42, or which includes a charge transport layer (51) on an electrode (52) and is designed to record information on the surface of said charge-transport layer (51) by toner development and then apply electrostatic charges on the surface of said charge transport layer (51) to inject said electrostatic charges into said charge-transport layer through an electrically conductive layer of the toner, thereby forming electrostatic information corresponding to the toner information on said charge transport layer. Thus, the electrostatic information-recording medium can thus be improved in terms of the capability to retain electrostatic information. The electrostatic information retained in this electrostatic information-recording medium is very stable because of being accumulated in the charge-carrying layer. Also, the information can be easily reproduced in the form of information of high quality and resolution by detecting a potential difference between the electrode and the surface potential.
    • 8. 发明授权
    • Process for recording images on an electrostatic information recording
medium with delayed disconnection of charge accumulation voltage
    • 用于在电荷累积电压延迟断开的静电信息记录介质上记录图像的方法
    • US5298947A
    • 1994-03-29
    • US720858
    • 1991-07-16
    • Takashi AonoMinoru UtsumiHiroyuki ObataKohji IchimuraMasayuki Iijima
    • Takashi AonoMinoru UtsumiHiroyuki ObataKohji IchimuraMasayuki Iijima
    • G03G5/02G03G15/00G03G15/05G03G15/22G03G5/00
    • G03G15/05G03G15/04045G03G15/221G03G15/758G03G5/02
    • The present invention provides an image-recording process wherein the voltage applied between a photosensitive member 2 and electrostatic information recording medium 1 is put off after the lapse of a given time from the closing of an exposure shutter 13. It is thus possible to move all the generated carriers onto electrostatic information recording medium 1 and accumulate them as charges in an amount corresponding to the quantity of exposure irrespective of a voltage shutter time. It is also possible to electrically charge electrostatic information recording medium 1 or the photosensitive member 2 in advance and put on-off an electrical connection between the electrodes of the photosensitive member 2 and electrostatic information recording medium 1 to control image exposure, thereby dispensing with any external high voltage power source and obtaining a positive image. In addition, it is possible to avoid the occurrence of inverse discharge and prevent the resulting image from falling into disorder by separating the photosensitive member 2 and electrostatic information recording medium 1 from each other, while voltage remains applied between the electrodes thereof, after an electrostatic image has been formed on the electrostatic information recording medium 1, and putting off the voltage impressed.
    • PCT No.PCT / JP90 / 01497 Sec。 371日期:1991年7月16日 102(e)日期1991年7月16日PCT 1990年11月16日PCT PCT。 公开号WO91 / 07702 日本1991年5月30日。本发明提供了一种图像记录方法,其中施加在感光构件2和静电信息记录介质1之间的电压在从曝光挡板13的关闭经过给定时间之后被放下。 因此可以将所有生成的载体移动到静电信息记录介质1上,并且将其作为与曝光量相对应的量的电荷累积,而与电压快门时间无关。 也可以预先对静电信息记录介质1或感光构件2进行充电,并且将感光构件2的电极与静电信息记录介质1的电连接放开,以控制图像曝光,从而分配任何 外部高压电源并获得正像。 此外,可以避免反向放电的发生,并且通过在感光构件2和静电信息记录介质1之间分离静电信息记录介质1之间,同时电压保持施加在静电之后,防止所得到的图像失控 已经在静电信息记录介质1上形成图像,并且施加了电压。