Microcapsule containing photo-oxidizing agent and leuco dye

Details Microcapsule containing photo-oxidizing agent and leuco dye Microcapsule containing photo-oxidizing agent and leuco dye

1988-10-14

1990-10-09

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Microcapsule, process, composition, or product

430336, 430337, 430338, 503205, 503214, G03C 1727, G03C 172, G03C 500

Patent

active

049620096

ABSTRACT:
An image-forming material comprising: (a) microcapsules, in which at least one leuco dye capable of developing a color by oxidation and at least one photooxidizing agent (preferably a combination of a lophine dimer and an organic halogeno-compound) are enclosed together, and (b) at least one reducing agent not enclosed in the microcapsules (preferably present in the form of an emulsified dispersion), thereby achieving image formation in a completely dried condition, and ensuring excellent freshness keeping property, image reproducibility and fixability.

REFERENCES:
patent: 3390995 (1968-07-01), Manos
patent: 3544321 (1970-12-01), Yamada et al.
patent: 3708297 (1973-01-01), Poot et al.
patent: 4060416 (1977-11-01), Royen
patent: 4090877 (1988-05-01), Streeper
patent: 4622286 (1986-11-01), Sheets
Srrague et al., "New Photographic Processes, 1. The Arylamine-Carbon Tetrabromide Systems Giving Print-Out Dye Images", Photographic Science and Engineering, vol. 5, pp. 98 to 103 (1961).

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