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Proceedings Paper

Chemistry of the Konica Dry Color System
Author(s): Yoshihiko Suda; Keiji Ohbayashi; Kaoru Onodera
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Paper Abstract

While silver halide photosensitive materials offer superiority in image quality -- both in color and black-and-white -- they require chemical solutions for processing, and this can be a drawback. To overcome this, researchers turned to the thermal development of silver halide photographic materials, and met their first success with black-and-white images. Later, with the development of the Konica Dry Color System, color images were finally obtained from a completely dry thermal development system, without the use of water or chemical solutions. The dry color system is characterized by a novel chromogenic color image-forming technology and comprises four processes. (1) With the application of heat, a color developer precursor (CDP) decomposes to generate a p-phenylenediamine color developer (CD). (2) The CD then develops silver salts. (3) Oxidized CD then reacts with couplers to generate color image dyes. (4) Finally, the dyes diffuse from the system's photosensitive sheet to its image-receiving sheet. The authors have analyzed the kinetics of each of the system's four processes. In this paper, they report the kinetics of the system's first process, color developer (CD) generation.

Paper Details

Date Published: 1 August 1991
PDF: 3 pages
Proc. SPIE 1458, Printing Technologies for Images, Gray Scale, and Color, (1 August 1991); doi: 10.1117/12.46336
Show Author Affiliations
Yoshihiko Suda, Konica Corp. (Japan)
Keiji Ohbayashi, Konica Corp. (Japan)
Kaoru Onodera, Konica Corp. (Japan)


Published in SPIE Proceedings Vol. 1458:
Printing Technologies for Images, Gray Scale, and Color
Derek B. Dove; Takao Abe; Joachim L. Heinzl, Editor(s)

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