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    • 24. 发明授权
    • Braille erasure mechanism
    • 盲文擦除机制
    • US08602787B2
    • 2013-12-10
    • US12898651
    • 2010-10-05
    • Michael SchmidtJude Jonas
    • Michael SchmidtJude Jonas
    • G09B21/00
    • B41M3/16G09B21/02
    • An improved Braille erasure mechanism may comprise a reverse-embosser or impressing mechanism to imprint a negative Braille cell. A negative Braille cell is the reverse of a normal Braille cell, with one or more dots lowered or pressed into the printing medium in an opposite direction to the raised dots of a normal Braille cell. Because the dots of a negative Braille cell are lowered past the surface of the printing medium, they may be ordinarily undetectable to the fingers of a Braille user. Accordingly, by imprinting a full negative Braille cell on top of a Braille cell to be erased, all of the previously raised dots of the Braille cell may be lowered beyond the surface of the printing medium. Any further Braille cell embossed over the erased cell will be free from corruption, because any dot not used by the new cell will remain lowered and undetectable.
    • 改进的盲文擦除机构可以包括用于印记负盲文单元的反向压花机或压印机构。 负盲文单元与普通盲文单元相反,其中一个或多个点以与正常盲文单元的凸起点相反的方向降低或压入打印介质。 因为负盲孔单元的点被降低通过打印介质的表面,所以它们通常可能不能被盲文用户的手指检测到。 因此,通过将要消除的盲文单元的顶部上的全负的盲文单元压印,盲文单元的所有先前凸出的点都可以被降低到打印介质的表面之外。 在擦除的单元上浮雕的任何进一步的盲文单元将没有腐蚀,因为新单元未使用的任何点将保持降低和不可检测。