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    Copy prevention method
    1.
    发明授权
    Copy prevention method 有权
    防复制方法

    公开(公告)号：US06108512A

    公开(公告)日：2000-08-22

    申请号：US450817

    申请日：1999-11-29

    申请人： Thomas A. Hanna

    发明人： Thomas A. Hanna

    IPC分类号： G03G21/04 ,  H04N1/00 ,  H04N1/29

    CPC分类号： H04N1/29 ,  G03G21/043 ,  H04N1/00883 ,  Y10S283/902

    摘要： A system for producing non-copyable prints. In a xerographic printer, text is printed using clear toner. Thus, the only optical difference between toner and non-toner portions of the page is in the reflectivity. The plastic toner will reflect more light than the paper. A human reader can now read the image by holding the page at such an angle that the eye will intercept the reflected light from the toner, producing a contrast between the lighter appearing toner and the darker appearing paper. However, a copier scanner is always set up to avoid reflected light, by supplying light at an oblique angle and reading at a right angle. In this case the diffused light is approximately equal for both toned and untoned surfaces, the scanner will detect no difference and the copier will not be able to copy the original.

    摘要翻译： 用于生产不可复印的打印件的系统。 在静电印刷机中，使用透明碳粉打印文字。 因此，页面的调色剂和非调色剂部分之间的唯一光学差异在于反射率。 塑料调色剂将比纸张反射更多的光。 人类读取器现在可以通过以如此角度握住页面来读取图像，使得眼睛将截取来自调色剂的反射光，产生较浅出现的调色剂和较暗的纸张之间的对比度。 然而，通过以斜角供应光并以直角读取，总是设置复印机扫描器以避免反射光。 在这种情况下，扩散光对于色调和非色调表面几乎相等，扫描仪将不会检测到差异，复印机将无法复制原稿。

    Hydrodynamically stable coating flow applicator
    2.
    发明授权
    Hydrodynamically stable coating flow applicator 失效
    流体动力学稳定的涂布流程

    公开(公告)号：US5708936A

    公开(公告)日：1998-01-13

    申请号：US707350

    申请日：1996-09-03

    申请人： Fong-Jen Wang ,  Gerald A. Domoto ,  Paul W. Morehouse Jr. ,  John F. Knapp ,  Thomas A. Hanna ,  Stephen T. Chai ,  Joseph F. Lacchia

    发明人： Fong-Jen Wang ,  Gerald A. Domoto ,  Paul W. Morehouse Jr. ,  John F. Knapp ,  Thomas A. Hanna ,  Stephen T. Chai ,  Joseph F. Lacchia

    IPC分类号： G03G15/10

    CPC分类号： G03G15/101

    摘要： An apparatus for developing an electrostatic latent image with liquid developing material. The apparatus includes a liquid developing material coating flow applicator for applying a substantially uniform coating of liquid developing material to a moving surface, wherein a housing, situated proximate to the moving surface, includes a fluid transport channel having a relatively narrow-width elongated outlet port for delivering a flow of liquid developing material to the moving surface, and an air flow channel having an elongated inlet aperture located adjacent the moving surface and immediately upstream from said outlet port for applying vacuum pressure to the flow of liquid developing material for varying the profile of the coating flow to provide variation of flow stability as well as thickness. A discussion of the effects of variations in the outlet port geometry, in particular, increasing the dimension between the downstream wall and the surface to be coated, has also been provided. A developing roll situated adjacent to and downstream from the liquid developing material is also provided for attracting the liquid developing material to image areas of the electrostatic latent image.

    摘要翻译： 一种用液体显影材料显影静电潜像的装置。 该装置包括用于将液体显影材料基本上均匀的涂层施加到移动表面的液体显影材料涂布流动施加器，其中位于移动表面附近的壳体包括流体输送通道，该流体输送通道具有相对窄的细长出口 用于将液体显影材料流传送到移动表面，以及空气流动通道，其具有位于移动表面附近并紧邻所述出口端上游的细长入口孔，用于向液体显影材料流施加真空压力以改变轮廓 的涂层流动，以提供流动稳定性以及厚度的变化。 还提供了关于出口端口几何形状的变化的影响的讨论，特别是增加下游壁和待涂覆表面之间的尺寸。 还设置有位于液体显影材料附近和下游的显影辊，用于吸引液体显影材料成像静电潜像的区域。