Dye-forming developers in an imaging material and process
    41.
    发明授权
    Dye-forming developers in an imaging material and process 失效
    成像材料和工艺中的成色剂

    公开(公告)号:US4426441A

    公开(公告)日:1984-01-17

    申请号:US446737

    申请日:1982-12-03

    摘要: In a dye-forming imaging material comprising (a) a dye-forming coupler, and (b) an organic reducing agent that is capable in its oxidized form of reacting with the dye-forming coupler to form a dye, improvements are provided by a reducing agent that is a ureidoaniline silver halide developing agent free of strong electron withdrawing groups. Such an imaging material can be a photographic silver halide material. The imaging material can be a photothermographic material for producing a dye image comprising, in reactive association, (a) photographic silver halide, (b) a dye-forming coupler, and (c) an oxidation-reduction image forming combination comprising (1) an organic silver salt oxidizing agent, and (2) an organic reducing agent for the organic silver salt oxidizing agent, wherein the reducing agent is a ureidoaniline which is capable in its oxidized form of reacting with the dye-forming coupler to form a dye. A thermographic material comprises the same combination of components without the need for photographic silver halide. A silver image and dye image are produced in such an exposed photothermographic material by heating the material until the silver image and dye image are produced. An image in a thermographic material is produced by imagewise heating the material. Ureidoaniline silver halide developing agents are also useful in processing compositions for photographic silver halide materials.

    摘要翻译: 在包含(a)成色成色剂的染料成像材料中,和(b)能够与染料形成成色剂反应形成染料的氧化形式的有机还原剂,由 还原剂是不含强吸电子基团的脲基苯胺卤化银显影剂。 这种成像材料可以是照相卤化银材料。 成像材料可以是用于产生染料影像的光热敏成像材料,其包括(a)照相卤化银,(b)染料形成成色剂,和(c)氧化还原成像组合,其包括(1) 有机银盐氧化剂,和(2)有机银盐氧化剂的有机还原剂,其中还原剂是能够与染料形成成色剂反应形成染料的氧化形式的脲基苯胺。 热成像材料包括相同的组分组合,而不需要照相卤化银。 在这种曝光的光热敏成像材料中通过加热材料产生银图像和染料图像,直到产生银图像和染料图像。 通过对材料进行成像加热来生产热成像材料中的图像。 脲基苯胺卤化银显影剂也可用于加工用于照相卤化银材料的组合物。

    Heat sensitive reactive products of hexaarylbiimidazole and antihalation
dyes
    43.
    发明授权
    Heat sensitive reactive products of hexaarylbiimidazole and antihalation dyes 失效
    六芳基联咪唑和防晕晕染料的热敏反应产物

    公开(公告)号:US4201590A

    公开(公告)日:1980-05-06

    申请号:US954011

    申请日:1978-10-23

    IPC分类号: G03C1/498 G03C1/83 G03C1/02

    摘要: A heat bleachable material comprises (i) at least one hexaarylbiimidazole with (ii) at least one dye, especially an antihalation or filter dye, that is reactive with the product of the hexaarylbiimidazole formed upon heating the material to a temperature above about 90.degree. C. This provides a material that becomes at least 40% colorless within about 20 minutes, typically within about 30 seconds, upon heating to a temperature as described. The dye-containing material is especially useful for antihalation and filter purposes in a photographic element. The material can be a heat bleachable dye layer of a photothermographic element. The heat bleachable dye layer can also be useful in a thermographic element.

    摘要翻译: 热可漂洗材料包括(i)至少一种六芳基联咪唑与(ii)至少一种染料,特别是防晕或过滤染料,其与加热材料时形成的六芳基联咪唑的产物反应至高于约90℃ 这提供了在加热到如上所述的温度时在约20分钟内,通常在约30秒内变成至少40%无色的材料。 含染料的材料在照相元件中特别适用于防晕和过滤目的。 该材料可以是光热敏成像元件的热漂白染料层。 热可漂洗染料层也可用于热成像元件。

    Radiation sensitive co(III)complex photoreduction element with image
recording layer
    44.
    发明授权
    Radiation sensitive co(III)complex photoreduction element with image recording layer 失效
    具有图像记录层的辐射敏感性Co(III)复合光还原元件

    公开(公告)号:US4201588A

    公开(公告)日:1980-05-06

    申请号:US720873

    申请日:1976-09-07

    CPC分类号: G03C1/67 B41M5/32 Y10S430/137

    摘要: 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.

    摘要翻译: 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。