Dye imbibition photohardenable imaging material and process for forming positive dye images

US4374194A · kind A · utility

Assignee

• EASTMAN KODAK COMPANY · US

Inventors

• Hugh G. McGuckin · Rochester, US
• Susan E. Hartman · Rochester, US
• Donald P. Specht · Rochester, US

Key dates

• Filing date: Dec 4, 1981
• Grant date: Feb 15, 1983
• Expiry date: Dec 4, 2001

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31797
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A positive, continuous tone, dye image is produced by means of a dye imbibition imaging element comprising (a) a support having thereon, (b) a cationic mordant layer for an anionic dye, and (c) a sensitized photohardenable photopolymer layer consisting essentially of a photosensitive polyesterionomer. A process for forming a positive, continuous tone dye image in a dye imbibition imaging element, as described, comprises the steps of: (1) imagewise exposing the photopolymer layer of the element to activating radiation to imagewise harden the photopolymer layer; then (2) developing the photopolymer layer by means of water rinsing; and, then (3) imbibing an anionic dye into the mordant layer through the unexposed areas of the photopolymer layer. Alternatively, the process comprises immersing the imagewise-exposed element from step (1) into a bath comprising the anionic dye without the need for a water rinsing step. This alternative process enables the anionic dye to be imbibed into the mordant layer through the unexposed areas of the photopolymer layer without the need for removing a portion of the unexposed areas of the photopolymer layer. The anionic dye is optionally transferable i…