Method for making positive working printing plates from a heat m

Details Method for making positive working printing plates from a heat m Method for making positive working printing plates from a heat m

1999-03-10

2000-11-28

Baxter, Janet

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Radiation sensitive composition or product or process of making

430156, 4302781, 430302, G03F 7095

Patent

active

06153353&

ABSTRACT:
According to the present invention there is provided a heat mode imaging element for making a lithographic printing plate having on a lithographic base with a hydrophilic surface a first layer including a polymer, soluble in an aqueous alkaline solution and a top layer on the same side of the lithographic base as the first layer which top layer is unpenetrable for or insoluble in an alkaline developer containing SiO.sub.2 in the form of silicates; characterized in that said first layer and said top layer comprise a compound capable of converting IR-light into heat.

REFERENCES:
patent: 3619157 (1971-11-01), Brinckman
patent: 5466557 (1995-11-01), Haley et al.
patent: 5641608 (1997-06-01), Grunwald et al.
patent: 5858604 (1999-01-01), Takeda et al.
patent: 5900345 (1999-05-01), Platzer et al.
patent: 5948596 (1999-09-01), Zhong et al.

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