公开(公告)号：US4243737A

公开(公告)日：1981-01-06

申请号：US854573

申请日：1977-11-25

申请人： Thap DoMinH

发明人： Thap DoMinH

IPC分类号： G03C1/67 ,  G03C1/60 ,  G03C1/72

CPC分类号： G03C1/67 ,  Y10S430/137

摘要： An image-forming element is disclosed comprised of a support and a coating thereon containing a cobalt(III)complex and a compound containing a conjugated .pi. bonding system capable of forming at least a bidentate chelate with cobalt(III). The coating is predominantly free of anions which will form conjugate acids by deprotonation of a cobalt(II)complex containing the chelating compound. In one preferred form the image-forming element is radiation-sensitive. In this form the image-forming element can contain a photoactivator capable of initiating reduction of the cobalt(III)complex. An imaging process is disclosed in which the coating is exposed to actinic radiation to produce an image. Images can be recorded directly within the image-forming coating or in a separate image-recording element or layer by use of the residual cobalt(III)complex or by use of 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 image-forming coating.

摘要翻译： 公开了一种图像形成元件，其包含载体和其上包含钴（III）络合物的涂层和含有能与钴（III）形成至少二齿螯合物的共轭π键合体系的化合物。 涂层主要不含阴离子，阴离子将通过含有螯合化合物的钴（II）络合物去质子化而形成共轭酸。 在一种优选形式中，成像元件是辐射敏感的。 在这种形式中，成像元件可以含有能够引发还原钴（III）络合物的光活化剂。 公开了一种成像方法，其中涂层暴露于光化辐射以产生图像。 可以通过使用残留的钴（III）络合物或通过使用通过曝光产生的一种或多种反应产物直接在图像形成涂层内或在单独的图像记录元件或层中记录图像。 通过使用从暴露于成像和均匀曝光的曝光结合的含有钴（III）配合物的氨配体释放的氨，可以在与成像涂层相关的重氮图像记录层或元件中形成正或负图像。