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    • 81. 发明专利
    • Formation of electrostatic latent image
    • 形成静电影像
    • JPS6180177A
    • 1986-04-23
    • JP20272384
    • 1984-09-27
    • Toshiba Corp
    • UEHARA TSUTOMUHOSOYA MASAHIROFUJIWARA SHIGERUOKUYAMA TETSUO
    • G03G15/02
    • G03G15/0266G03G15/0291
    • PURPOSE:To obtain a sharp image having medium contrast with good reproducibility by executing approximately simultaneously the irradiation of a light image and corona discharge on a photosensitive body, impressing a voltage to the shield electrode or grid electrode of a corona discharger or both thereof and making variable the voltage. CONSTITUTION:The photosensitive body 1 consisting of a conductive substrate 21 and a photoconductor layer 22 is subjected approximately simultaneously to the irradiation 3 of a light image and the corona discharge from the corona discharger 2. The voltage is impressed to the shield electrode 24 or grid electrode 71 of the discharger 2 or both thereof and is made variable. The irradiation of the light image and corona discharge are executed approximately simultaneously in the above-mentioned manner on condition that the electrostatic charge does not appear at the same point of the body 1 after the end of the irradiation of the light image. The medium contrast is reproduced by such electrostatic latent image forming stage and the contrast and density of the medium contrast image can be adjusted by making variable the quantity of the corona discharge. Since the quantity of such corona discharge is stable and is easily reproducible, the reproducibility of the image is improved and the deterioration of the image owing to the deviation of the light image and the deviation of the irradiating position of bias light, etc. are obviated.
    • 目的:为了获得具有良好再现性的中等对比度的清晰图像,通过大致同时执行光敏图像的照射和感光体上的电晕放电,向电晕放电器的屏蔽电极或栅格电极施加电压或两者, 电压变化。 构成:由导电性基板21和感光体层22构成的感光体1大致同时照射光图像的照射3和来自电晕放电器2的电晕放电。电压施加到屏蔽电极24或电网 放电器2的电极71或其两者都可变。 在光图像的照射结束后静电电荷不出现在本体1的同一点的条件下,以上述方式大致同时执行光图像和电晕放电的照射。 通过这种静电潜像形成阶段再现中等对比度,并且可以通过使电晕放电量变化来调节中等对比度图像的对比度和密度。 由于这种电晕放电的量是稳定的并且易于重现,因此图像的再现性得到改善,并且消除了由于光图像的偏差和偏光的照射位置的偏离等引起的图像的劣化等 。
    • 89. 发明专利
    • DISPLAY
    • JPH10282886A
    • 1998-10-23
    • JP9210997
    • 1997-04-10
    • TOSHIBA CORP
    • MATAKE SHIGERUOKUYAMA TETSUOSUGIUCHI MASAMI
    • B42D15/10G09F3/02
    • PROBLEM TO BE SOLVED: To prevent forgery by providing a thermal transfer image layer formed on a first base material and a laminate film with a second perforated layer formed of the thermal transfer image layer and a third base material formed on the second perforated layer. SOLUTION: The thermal transfer image layer 2 is provided on the surface of a display main body 3. The layer 2 is obtained by providing an image receiving layer 2b as a first perforated layer on the base material film 2a having 500 μm thickness using PET as a second base material and adhering these to the main body 3 by the adhering layer 2c having 4 μm thickness provided for the rear face of the film 2a and using the adhesive of a hot melt group. For the layer 2b, characteristic information 4 is printed by a thermal transfer method by a thermal head. In addition, the surface of the layer 2 is coated with the laminate film 1.