Process for the production of a color image utilizing transferred white pigment layer

US5527654A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Martin Benzing · Biebelnheim, DE
• Dieter Mohr · Appenheim, DE
• Juergen Mertes · Ingelheim am Rhein, DE
• Peter Blum · Kronberg, DE

Key dates

• Filing date: Jul 18, 1994
• Grant date: Jun 18, 1996
• Expiry date: Jul 18, 2014

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/259
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A process for the production of a color image is described, in which a photosensitive material that has a temporary support film, a colored photosensitive layer and an adhesion-promoting layer that can be activated by heat is laminated at high temperature and under pressure with an image-receiving material which carries, on a support, a pigment layer containing a white pigment. The photosensitive layer is exposed imagewise and developed to produce an image, the temporary support film is peeled off from the image-receiving material before or after exposure to light and, if required, these steps are repeated with at least one further photosensitive material whose colored layer has another color to produce a multi-colored image. The process gives color images having a smaller dot enlargement compared with a halftone original and is particularly suitable for the color testing of copy for multicolor printing.