Method of forming a positive image through infrared exposure uti

Details Method of forming a positive image through infrared exposure uti Method of forming a positive image through infrared exposure uti

1997-08-08

1999-01-12

Young, Christopher G.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Forming nonplanar surface

430944, G03F 730

Patent

active

058586261

ABSTRACT:
An infrared imaging composition contains two essential components, namely an infrared absorbing compound, and a phenolic resin that is either mixed or reacted with an o-diazonaphthoquinone derivative. These compositions are useful in positive-working elements such as lithographic printing plates that can be adapted to direct-to-plate imaging procedures. The weight ratio of infrared radiation absorbing compound to diazonaphthoquinone moiety is less than 1:14.

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