Kodak Polychrome Graphics, Gmbh

Eastman-kodak Company

Ralph Scott Schneebeli

Eugene Lynn Sheriff

Thomas R Jordan

Gary Roger Miller

Paul Richard West

Neil F Haley

Jeffery Allen Gurney

Jeffrey Allen Gurney

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.

Method of forming a positive image through infrared exposure utilizing diazonaphthoquinone imaging composition

A positive-working lithographic printing plate is used to provide a positive image without a post-exposure baking step and without any floodwise exposure steps. The printing plate includes an imaging layer that is imageable using an infrared radiation laser. The imaging layer consists essentially of a phenolic resin and an infrared radiation absorbing compound.

Positive-working printing plate and method of providing a positive image

Method of forming a positive image through infrared exposure utilizing

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 photosensitive elements such as lithographic printing plates that can be adapted to direct-to-plate imaging procedures.

Infrared-sensitive, negative-working diazonaphthoquinone imaging

An infrared imaging composition contains two essential components, namely an infrared radiation absorbing compound, and a phenolic resin that is either mixed or reacted with an o-diazonaphthoquinone derivative. These compositions are useful in photosensitive elements such as lithographic printing plates that can be used to provide images using laser imaging, followed by uniform exposure and development.

Growing community of inventors

Ft. Collins, CO, United States of America

Ralph Scott Schneebeli