A Silver-Free, Single-Sheet Imaging Medium Based on Acid Amplification-Reference-Cited by-同舟云学术

A Silver-Free, Single-Sheet Imaging Medium Based on Acid Amplification

Published:2002-08-30 Issue:5586 Volume:297 Page:1516-1521
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Marshall John L.¹,Telfer Stephen J.¹,Young Michael A.¹,Lindholm Edward P.¹,Minns Richard A.¹,Takiff Larry¹

Affiliation:

1. Instant Digital Printing, Polaroid Corporation, 1265 Main Street, Building W4, Waltham, MA 02451, USA.

Abstract

We describe a photographic medium that uses acid-amplified imaging (AAI) rather than silver halide development to amplify a latent image. The latent image is captured when small amounts of superacid are generated by the photolysis of iodonium salts sensitized by cationic dyes. During thermal processing, the quantity of acid is multiplied in a process catalyzed by strong acid, resulting in a much larger amount of a weaker acid. Acid-sensitive indicator dyes that diffuse into regions where acid has been produced form a colored image. The AAI system is not sufficiently sensitive for direct use in cameras but is suitable for many printing applications.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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