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    • 21. 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.
    • 27. 发明申请
    • PROTECTIVE FILM TEMPORARILY LAMINATION TO ELECTROMAGNETIC WAVE SHIELDING SHEET, METHOD FOR PRODUCING THE SAME, AND ELECTROMAGNETIC WAVE SHIELDING SHEET
    • 电磁波屏蔽片及其制造方法及电磁波屏蔽片的保护膜薄膜层压
    • US20080200333A1
    • 2008-08-21
    • US11768309
    • 2007-06-26
    • Akiko GOTOUHironori KAMIYAMA
    • Akiko GOTOUHironori KAMIYAMA
    • B41M5/00
    • H05K9/0096B32B15/08B32B15/20H05K9/0086Y10T428/14Y10T428/1462Y10T428/1471Y10T428/24868
    • The present invention is to provide an electromagnetic wave shielding sheet with a protective film that is temporarily laminated on a copper mesh layer for shielding electromagnetic waves, the electromagnetic wave shielding sheet is not discolored even after long-term use, especially at high temperature and high humidity, while the protective film exhibits appropriate adhesion properties. To achieve the object, there is provided an electromagnetic wave shielding sheet comprising a transparent substrate, at least a copper mesh layer provided on one surface of the transparent substrate and a protective film temporarily laminated to the copper-mesh-layer-side surface, the protective film comprises a support and an adhesive layer containing a polymer having repeating units derived from an acrylic ester and/or a methacrylic ester on the support, and the amount of free organic acids in the adhesive layer is an amount which makes 10 or less the color difference ΔEL*a*b* of the copper-mesh-layer-side surface of the electromagnetic wave shielding sheet before and after the adhesive layer surface is laminated on the copper-mesh-layer-side surface and they are left for 200 hours in an atmosphere of a temperature of 60° C. and a relative humidity of 95%.
    • 本发明提供一种具有保护膜的电磁波屏蔽片,该保护膜暂时层压在用于屏蔽电磁波的铜网层上,电磁波屏蔽片即使在长期使用后也不变色,特别是在高温高 而保护膜表现出适当的粘合性能。 为了实现该目的,提供了一种电磁波屏蔽片,其包括透明基板,至少设置在透明基板的一个表面上的铜网层和临时层压在铜网层侧表面上的保护膜, 保护膜包括载体和粘合剂层,该粘合剂层含有在载体上具有衍生自丙烯酸酯和/或甲基丙烯酸酯的重复单元的聚合物,并且粘合剂层中的游离有机酸的量为10或更小 电磁波屏蔽片的铜网层侧表面的粘合层表面之前和之后的色调差DeltaE L * a * b * 层叠在铜网网侧 在温度60℃,相对湿度95%的气氛中放置200小时。