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    • 1. 发明授权
    • Water-developable film-forming diazonium compound containing
photopolymerizable compositions and negative-working lithographic
plates prepared therefrom
    • 含有可光聚合组合物的水显影成膜重氮化合物和由其制备的负性平版印刷版
    • US4299905A
    • 1981-11-10
    • US134328
    • 1980-03-26
    • Marcel PigeonMarta SzretterChantal Perie
    • Marcel PigeonMarta SzretterChantal Perie
    • G03F7/016G03F7/021G03F7/038H01L21/027G03C1/52G03C1/60G03C1/94
    • G03F7/0217
    • A film-forming oleophilic photopolymerizable composition is formed from a fluid epoxy resin having an epoxy equivalent of less than 350 and a photosensitive reaction product of a water-soluble, photosensitive condensation product of a diazonium compound and an organic condensation agent with an organic coupling agent. The organic coupling agent is selected such that the photosensitive reaction product is soluble in organic solvents but only slightly soluble in water. The photopolymerizable compositions can be used as the photosensitive layer of water-developable negative lithographic plates, such as printing plates.Water-developable negative lighographic plates are also provided in which the photosensitive layer is formed from a layer of the film-forming oleophilic photopolymerizable composition which is deposited on a hydrophilic support from an organic solvent solution.In addition to being water-developable the negative lithographic printing plates of the present invention have high mechanical resistance, long shelf-life and can be used in large production runs to make a great number of copies.
    • 成膜亲油性光聚合性组合物由环氧当量小于350的流体环氧树脂和重氮化合物的水溶性光敏缩合产物与有机缩合剂的光敏反应产物与有机偶联剂形成 。 选择有机偶联剂使得光敏反应产物可溶于有机溶剂,但仅溶于水。 可光聚合组合物可以用作可水印的负版印刷版的感光层,例如印版。 还提供了可水显的负极板,其中感光层由成膜亲油性光聚合性组合物层形成,该组合物由有机溶剂溶液沉积在亲水性载体上。 除了可水显性外,本发明的负版印刷版具有高的机械阻力,长的保存期限,并且可用于大量生产运行以制备大量的拷贝。
    • 2. 发明授权
    • Photosensitive article for making visual aids with diazonium compounds
and liquid epoxy resin
    • 用于制备具有重氮化合物和液体环氧树脂的视觉辅助材料的感光制品
    • US4299893A
    • 1981-11-10
    • US134326
    • 1980-03-26
    • Marcel PigeonMarta SzretterChantal Perie
    • Marcel PigeonMarta SzretterChantal Perie
    • G03F3/10G03F7/021G03C1/54G03C1/60G03C1/78
    • G03F7/0217G03F3/10
    • Montage films, duplicating films, color guide films, microfiche film, color transparencies and similar visual aids are prepared from photosensitive articles having a layer of a photosensitive composition coated on a transparent support, preferably a flexible plastic transparent support.The exposed articles are developable with water to form the visual aid. The photosensitive layer is formed from a composition which includes a photosensitive reaction product of a condensation product of a diazonium compound with an arylsulfonic acid, and an epoxy resin which is liquid at ambient temperatures. The diazonium compound is preferably a paradiazodiphenylamine and the preferred condensing agent is formaldehyde or paraformaldehyde.The photosensitive layer can be colored with a permanent dye of a color depending on the type and use of the visual aid.Best results, with regard to water-developability and mechanical strength, are provided by first coating the transparent support with an intermediate layer of an adhesive resin.
    • 由具有涂覆在透明支撑体上,优选柔性塑料透明支撑体的感光组合物层的感光制品制备蒙太奇胶片,复印膜,引导膜,缩微胶片,彩色透明胶片和类似的视觉辅助材料。 暴露的物品可用水显影以形成视觉辅助。 感光层由包含重氮化合物与芳基磺酸的缩合产物的光敏反应产物和在环境温度下为液体的环氧树脂的组合物形成。 重氮化合物优选为对二氮二苯胺,优选的缩合剂为甲醛或多聚甲醛。 感光层可以根据视觉助剂的类型和用途用永久性染料着色。 通过首先用透明支撑体涂覆粘合树脂的中间层来提供关于水显影性和机械强度的最佳结果。
    • 3. 发明授权
    • Process of making lithographic plate, and plate from photosensitive
element
    • 光刻元件制作平版印刷版和印版的工艺
    • US4226931A
    • 1980-10-07
    • US904579
    • 1978-05-10
    • Ronald NeillMarcel Pigeon
    • Ronald NeillMarcel Pigeon
    • B41N3/03G03F7/02B41M5/00B41N1/00
    • B41C1/1016B41C2201/04B41C2210/04B41C2210/06B41C2210/24
    • The adherence of the oleophilic polymer printing surface of a lithographic printing plate to the support of the lithographic printing plate is improved by an anchoring layer formed from a hydrophobic oleophilic ester colloid which is capable of being rendered hydrophilic by treatment with an aqueous alkali solution. After an image-wise exposure of the photosensitive layer of the presensitized photosensitive sheet used to prepare the lithographic printing plate and removal of the non-polymerized (non-image) portions of the photosensitive layer the plate is contacted with an aqueous alkali solution to render those portions of the anchoring layer, which have been exposed by removal of the non-polymerized portions of the photosensitive layer, hydrophilic. Accordingly, the portions of the anchoring layer underlying the oleophilic hardened polymeric printing surface remain hydrophobic oleophilic and therefore can increase the number of satisfactory printings which can be made from the lithographic printing plate.
    • 平版印刷版的亲油性聚合物印刷表面对平版印刷版的支持体的粘附通过由能够通过用碱性水溶液处理而变得亲水的疏水性亲油性酯胶体形成的锚定层来改善。 在用于制备平版印刷版的感光性感光层的感光层成像曝光后,除去感光层的非聚合(非图像)部分之后,使该板与碱性水溶液接触, 已经通过去除感光层的非聚合部分而暴露的锚定层的那些部分是亲水的。 因此,亲油硬化聚合物印刷表面下方的锚定层的部分保持疏水亲油性,因此可以增加可从平版印刷版制成的令人满意的印刷数。
    • 5. 发明授权
    • Lithographic plate of tin-plated steel and method of manufacture
    • 镀锡钢板及其制造方法
    • US4287288A
    • 1981-09-01
    • US10398
    • 1979-02-08
    • Marcel PigeonYannick de Maquille
    • Marcel PigeonYannick de Maquille
    • B41N3/03G03F7/08B41N1/10G03C1/74G03F7/10
    • B41N3/03Y10S205/917Y10S205/921
    • A method of making a presensitized lithographic plate is disclosed wherein a steel support having a tin-plated layer is depassivated and coated with a photosensitive product. Depassivation is accomplished by immersion of the support in an electrolytic bath of sodium carbonate. The electrolysis is performed with the support as a cathode and reversed so that the support is an anode of the bath. Preferably, the bath is an aqueous solution of 50 grams per liter of sodium carbonate at a temperature of 65.degree. C. with a current density of the bath being approximately 2.5 amperes per dm.sup.2. It is also contemplated that the depassivated tin-plated layer may be coated with copper before application of the photosensitive product. This can be accomplished by immersion in an electrolytic bath of copper cyanide. Preferably, the copper cyanide bath is at a temperature of 65.degree. C. with immersion occurring for approximately 3 minutes with the support in the cathode position and having a current density of 2.5 amperes per dm.sup.2. This results in a copper coating of approximately 3-4 microns in thickness. The copper coating may be passivated before the photosensitive product is added by a coating of aqueous benzotriazole solution.The photosensitive product may be a diazo resin of the orthoquinone diazide type condensed with a formophenolic resin. Over the diazo resin, after development a firing solution which is subsequently annealed may be added. Alternatively, the depassivation of the tin-plated layer may be accomplished by wet brushing in the presence of an aqueous pounce solution followed by impregnation with a hydrochloric acid and stannous chloride solution.Alternatively, a chromium layer may also be applied to the depassivated tin-plated layer before application of the photosensitive product. Such is accomplished in an electrolytic chromium bath containing chromic acid and sulfuric acid, the support being in a cathode position and the bath having a current density of approximately 20 amperes per dm.sup.2. It is also contemplated that the photosensitive product may be a photopolymer of a cellulose acetate layer coated with a photopolymer. This results in a lithographic plate comprising oleophilic zones of a photopolymer or copper and hydrophilic zones of chromium or tin.
    • 公开了一种制造预敏化平版印刷板的方法,其中具有镀锡层的钢支架被钝化并涂覆有感光产品。 通过将载体浸入碳酸钠的电解浴中来实现钝化。 电解是用载体作为阴极进行的并且反转,使得载体是浴的阳极。 优选地,浴是在65℃的温度下为50克/升碳酸钠的水溶液,浴的电流密度为约2.5安培/ dm 2。 还可以设想,在施加光敏产物之前,去钝化的镀锡层可以用铜涂覆。 这可以通过浸入氰化铜电解槽来实现。 优选地,氰化铜浴的温度为65℃,浸渍在阴极位置并且具有2.5安培/ dm 2的电流密度浸泡发生约3分钟。 这导致厚度约3-4微米的铜涂层。 在通过苯并三唑水溶液的涂层加入感光产品之前,可以将铜涂层钝化。 感光产品可以是与苯酚酚醛树脂缩合的重氮二叉型重氮树脂。 在重氮树脂上,在显影后,可以加入随后退火的焙烧溶液。 或者,镀锡层的钝化可以通过在水溶液浸渍溶液的存在下进行湿法刷洗,然后用盐酸和氯化亚锡溶液浸渍来完成。