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    • 10. 发明授权
    • Reverse write erasable paper
    • 反写可擦写纸
    • US07811741B2
    • 2010-10-12
    • US12391499
    • 2009-02-24
    • Peter M. KazmaierEric ShraderKentaro MorimitsuTyler NorstenGabriel IftimeFazilia SekerNaveen Chopra
    • Peter M. KazmaierEric ShraderKentaro MorimitsuTyler NorstenGabriel IftimeFazilia SekerNaveen Chopra
    • G03F7/00G03F7/004G03F7/20
    • G03C1/685G03C1/73
    • An image-forming medium and methods for forming and imaging the medium are provided. The disclosed medium can be strongly colored under room illumination (or deliberate UV) and can be selectively discolored at an appropriate light wavelength to form an image. In one embodiment, the image-forming medium can include a substrate (e.g., a sheet of paper), a photochromic material incorporated with the substrate, and a photo-absorbing material incorporated with the photochromic material. Exemplary methods for using the image-forming medium to make a transient image can include first forming the image-forming medium by applying a coating solution containing photochromic material to the substrate or paper. The image-forming medium can have a medium color and can then be selectively exposed to a radiation through a mask to convert the photochromic material from a colored form to a colorless form and thus to form an image having a color contrast with its background.
    • 提供了一种图像形成介质以及用于形成和成像介质的方法。 所公开的介质可以在室内照明(或有意识的UV)下强烈着色,并且可以在适当的光波长下选择性地变色以形成图像。 在一个实施例中,图像形成介质可以包括基底(例如,一张纸),与基底结合的光致变色材料以及与光致变色材料结合的光吸收材料。 使用图像形成介质进行瞬时图像的示例性方法可以包括首先通过将含有光致变色材料的涂布溶液涂布到基材或纸上来形成图像形成介质。 图像形成介质可以具有中等颜色,然后可以通过掩模选择性地暴露于辐射,以将光致变色材料从有色形式转变成无色形式,并因此形成具有背景色彩对比度的图像。