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    • 7. 发明申请
    • Electrophotographic photosensitive member and judging method for interference fringes caused by electrophotographic photosensitive member
    • 电子照相感光构件和由电子照相感光构件引起的干涉条纹的判断方法
    • US20050118520A1
    • 2005-06-02
    • US10985012
    • 2004-11-10
    • Motohiro Takeshima
    • Motohiro Takeshima
    • G03G5/00G03G5/10G03G5/14
    • G03G5/104G03G5/10G03G5/144
    • In an electrophotographic apparatus (e.g., a photocopier or laser printer), an electrophotographic photosensitive member (image-forming part) has a metal substrate roughened on its surface, a metal oxide-containing undercoat layer on the substrate, and an organic photosensitive layer over the undercoat. A coherent light source (e.g., laser) can cause interference fringes that degrade the printed image. Interference fringes are judged (or predicted) as follows: The surface reflectance is measured at intervals over the spectral width of the light source. The measured surface reflectance is corrected, using a mirror-surface conductive substrate as a reference, to obtain a reflectance of the photosensitive member. The reflectance is subjected to a discrete Fourier transformation, which generates a power spectrum, over the spectral width of the light source, from the reflectance as a function of the wavelength. Interference fringes are judged from the maximum peak value in the power spectrum, as compared to a predetermined value.
    • 在电子照相设备(例如,复印机或激光打印机)中,电子照相感光构件(图像形成部分)在其表面上具有粗糙的金属基底,在基底上的含金属氧化物的底涂层和有机感光层 底漆。 相干光源(例如,激光)可以引起降低打印图像的干涉条纹。 干涉条纹被判断(或预测)如下:在光源的光谱宽度上以间隔测量表面反射率。 使用镜面导电性基板作为基准来校正所测量的表面反射率,以获得感光构件的反射率。 对反射率进行离散傅里叶变换,其从作为波长的函数的反射率在光源的光谱宽度上产生功率谱。 与预定值相比,从功率谱中的最大峰值判断干扰条纹。
    • 10. 发明授权
    • Electrophotographic photosensitive member
    • 电子照相感光构件
    • US08298733B2
    • 2012-10-30
    • US10985012
    • 2004-11-10
    • Motohiro Takeshima
    • Motohiro Takeshima
    • G03G15/06
    • G03G5/104G03G5/10G03G5/144
    • In an electrophotographic apparatus (e.g., a photocopier or laser printer), an electrophotographic photosensitive member (image-forming part) has a metal substrate roughened on its surface, a metal oxide-containing undercoat layer on the substrate, and an organic photosensitive layer over the undercoat. A coherent light source (e.g., laser) can cause interference fringes that degrade the printed image. Interference fringes are judged (or predicted) as follows: The surface reflectance is measured at intervals over the spectral width of the light source. The measured surface reflectance is corrected, using a mirror-surface conductive substrate as a reference, to obtain a reflectance of the photosensitive member. The reflectance is subjected to a discrete Fourier transformation, which generates a power spectrum, over the spectral width of the light source, from the reflectance as a function of the wavelength. Interference fringes are judged from the maximum peak value in the power spectrum, as compared to a predetermined value.
    • 在电子照相设备(例如,复印机或激光打印机)中,电子照相感光构件(图像形成部分)在其表面上具有粗糙的金属基底,在基底上的含金属氧化物的底涂层和有机感光层 底漆。 相干光源(例如,激光)可以引起降低打印图像的干涉条纹。 干涉条纹被判断(或预测)如下:在光源的光谱宽度上以间隔测量表面反射率。 使用镜面导电性基板作为基准来校正所测量的表面反射率,以获得感光构件的反射率。 对反射率进行离散傅里叶变换,其从作为波长的函数的反射率在光源的光谱宽度上产生功率谱。 与预定值相比,从功率谱中的最大峰值判断干扰条纹。