公开(公告)号：US6165685A

公开(公告)日：2000-12-26

申请号：US149044

申请日：1998-09-08

申请人： Karin Maerz ,  Helmut Haberhauer ,  Andreas Elsaesser ,  Hans-Joachim Schlosser ,  Fritz-Feo Grabley

发明人： Karin Maerz ,  Helmut Haberhauer ,  Andreas Elsaesser ,  Hans-Joachim Schlosser ,  Fritz-Feo Grabley

IPC分类号： G03F7/004 ,  B41C1/10 ,  B41N1/14 ,  G03F7/00 ,  G03F7/11 ,  G03C1/76

CPC分类号： B41C1/1016 ,  B41C2210/02 ,  B41C2210/06 ,  B41C2210/14 ,  B41C2210/20 ,  B41C2210/24 ,  B41C2210/262

摘要： The invention relates to a recording material having a substrate and a radiation-sensitive, water-insoluble layer which contains a component absorbing IR radiation and which, after the action of infrared radiation, becomes soluble or at least swellable in an aqueous alkaline developer. A top layer which is opaque to white light but transparent to radiation in the IR range and can be removed with water or an aqueous solution is present on the radiation-sensitive layer. The recording material is substantially insensitive to daylight. By imagewise exposure to IR radiation and subsequent development with an aqueous alkaline developer, it is possible to produce a printing plate for offset printing from the recording material. If the top layer is washed off beforehand, the recording can also be carried out using conventional UV radiation.

摘要翻译： 本发明涉及具有基材和辐射敏感的水不溶性层的记录材料，其含有吸收IR辐射的组分，并且在红外线辐射的作用下，在碱性显影液的水溶液中变得可溶或至少可溶胀。 对于白光不透明但对IR范围内的辐射透明并且可以用水或水溶液除去的顶层存在于辐射敏感层上。 记录材料对日光基本不敏感。 通过用IR辐射成像曝光并随后用含水碱性显影剂显影，可以从记录材料制备用于胶版印刷的印版。 如果顶层被预先洗去，也可以使用常规的紫外线辐射进行记录。

公开(公告)号：US6100004A

公开(公告)日：2000-08-08

申请号：US38162

申请日：1998-03-11

申请人： Andreas Elsaesser ,  Otfried Gaschler ,  Helmut Haberhauer ,  Mathias Eichhorn ,  Fritz-Feo Grabley ,  Thomas Leichsenring ,  Gabor I. Koletar ,  Douglas A. Seeley

发明人： Andreas Elsaesser ,  Otfried Gaschler ,  Helmut Haberhauer ,  Mathias Eichhorn ,  Fritz-Feo Grabley ,  Thomas Leichsenring ,  Gabor I. Koletar ,  Douglas A. Seeley

IPC分类号： G03F7/004 ,  B41C1/10 ,  B41M5/46 ,  C09D11/00 ,  G03F7/00 ,  G03F7/021 ,  G03F7/022 ,  G03F7/32 ,  G03F7/30

CPC分类号： B41M5/465 ,  B41C1/1008 ,  B41C2210/02 ,  B41C2210/04 ,  B41C2210/06 ,  B41C2210/20 ,  B41C2210/24 ,  B41C2210/262

摘要： A positive-working or negative-working radiation-sensitive mixture includes as an IR absorbing component a carbon black pigment having a primary particle size smaller than 80 nm. The carbon black pigment is predispersed in a polymer containing acidic units having a pK.sub.a of less than 13. The radiation-sensitive component may include an ester of (i) a 1,2-naphthoquinone-2-diazide-4-sulfonic acid or a 1,2-naphthoquinone-2-diazide-5-sulfonic acid and (ii) a compound having at least one phenolic hydroxyl group, such as 3 to 6 phenolic hydroxyl groups. After imagewise radiation exposure, the recording material including the radiation-sensitive mixture can be developed without difficulties in an aqueous alkaline solution without leaving residual coating on the areas that became soluble or that remained soluble upon exposure.

摘要翻译： 正性或负性辐射敏感性混合物包括作为IR吸收组分的一次粒径小于80nm的炭黑颜料。 炭黑颜料预先分散在含有pKa小于13的酸性单元的聚合物中。辐射敏感组分可以包括（i）1,2-萘醌-2-二叠氮-4-磺酸或 1,2-萘醌-2-二叠氮-5-磺酸和（ii）具有至少一个酚羟基的化合物，例如3至6个酚羟基。 在成像辐射曝光之后，包含辐射敏感性混合物的记录材料可以在碱性水溶液中无困难地显影，而不会在易溶的区域或暴露后保持溶解的区域留下残留涂层。