Radiation-sensitive mixture and recording material made thereof

Details Radiation-sensitive mixture and recording material made thereof Radiation-sensitive mixture and recording material made thereof

1998-03-11

2000-08-08

Chu, John S.

Radiation imagery chemistry: process, composition, or product th

Diazo reproduction, process, composition, or product

Composition or product which contains radiation sensitive...

430191, 430192, 430193, 4302701, 4302811, 430302, G03F 7021, G03F 0730

Patent

active

061000043

ABSTRACT:
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.

REFERENCES:
patent: 5658708 (1997-08-01), Kondo
patent: 5731123 (1998-03-01), Kawamura et al.

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