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    • 6. 发明授权
    • Radiation sensitive co(III)complex photoreduction element with image
recording layer
    • 具有图像记录层的辐射敏感性Co(III)复合光还原元件
    • US4201588A
    • 1980-05-06
    • US720873
    • 1976-09-07
    • Anthony AdinJames C. Fleming
    • Anthony AdinJames C. Fleming
    • B41M5/32G03C1/67G03C1/48G03C1/49G03C1/52G03C1/72
    • G03C1/67B41M5/32Y10S430/137
    • A radiation-sensitive element is disclosed including a radiation-sensitive layer comprised of a cobalt(III)complex and a photoreductant. A process is disclosed in which the photoreductant is converted to a reducing agent by exposure to electromagnetic radiation longer than 300 nanometers. The reducing agent is then reacted with a cobalt(III)complex. Images can be recorded directly within the radiation-sensitive layer or in a separate image-recording element or layer by use of the residual cobalt(III)complex not exposed or one or more of the reaction products produced by exposure. By using the ammonia liberated from ammine ligand containing cobalt(III)complexes on exposure in combination with imagewise and uniform exposures, positive or negative images can be formed in diazo image-recording layers or elements associated with the radiation-sensitive layer. By the selection of amine-responsive reducing agent precursors, the amines released by the cobalt(III) complexes cause an amplified image.
    • 公开了一种辐射敏感元件,其包括由钴(III)络合物和光致感光体组成的辐射敏感层。 公开了一种方法,其中通过暴露于长于300纳米的电磁辐射将光致感光体转化为还原剂。 然后还原剂与钴(III)络合物反应。 可以通过使用未暴露的残留的钴(III)络合物或通过曝光产生的一种或多种反应产物,将图像直接记录在辐射敏感层内或在单独的图像记录元件或层中。 通过使用从暴露于曝光后的氨基配体释放的氨与成像均匀的曝光结合使用,可以在重叠图像记录层或与辐射敏感层相关的元件上形成正或负的图像。 通过选择胺响应性还原剂前体,由钴(III)络合物释放的胺引起放大图像。
    • 10. 发明授权
    • Dye-forming electrothermographic material and process
    • 染料电热成像材料及工艺
    • US4752547A
    • 1988-06-21
    • US870572
    • 1986-06-04
    • Stanley W. CowenJames C. FlemingMark Lelental
    • Stanley W. CowenJames C. FlemingMark Lelental
    • B41M5/323B41M5/20G03C1/67G03C7/46G03G5/00G03G15/24G03G13/22
    • G03G5/00G03C1/67G03C7/46
    • A dye-forming electrothermographic element comprises an electrically activatable recording layer comprising (a) a reducing agent or reducing agent precursor capable of being activated by a Lewis base; (b) a cobalt(III) Lewis base complex; and (c) at least one of (i) a reducible dye-forming compound that has an oxidation state above that of the conjugate dye, (ii) a dye capable of changing its wavelength of absorption by reaction with a Lewis base, and (iii) a dye-forming coupler capable of reacting with the oxidized form of the reducing agent in (a) to form a dye. A negative or positive dye image is formed in such a dye-forming electrothermographic element by applying an electrical potential imagewise to the element of a magnitude and for a time sufficient to produce in the image areas a charge density sufficient to produce a latent image; and, then, heating the element to a temperature and for a time sufficient to form a dye image in the element. The dye-forming electrothermographic element can be a multicolor, multilayer electrothermographic element.
    • 染料形成电热成像元件包括电可活化记录层,其包含(a)能够被路易斯碱活化的还原剂或还原剂前体; (b)一种钴(III)路易斯碱络合物; 和(c)至少一种(i)具有高于该共轭染料的氧化态的可还原的形成染料的化合物,(ii)能够通过与路易斯碱反应来改变其吸收波长的染料和( iii)能够在(a)中与氧化形式的还原剂反应形成染料的染料形成成色剂。 在这种染料形成的电热成像元件中,通过将图像上的电位成像到该元件的大小和时间足以在图像区域中产生足以产生潜像的电荷密度来形成负或正的染料图像; 然后,将元件加热到足以在元件中形成染料图像的温度和时间。 染料形成电热元件可以是多色多层电热元件。