Patent Document ID: 4097278
Application ID: 05730914
Patent Status: 1

Claim One:
1. A method of forming an image comprising: in a first aqueous alkaline solution performing a first redox reaction by bringing a cobalt(III) complex, which permanently releases ligands upon reduction, and a reducing agent together and into contact with an element containing an image pattern of a heterogeneous catalyst, wherein the cobalt(III) complex and the reducing agent are chosen so that they are essentially inert to oxidation-reduction in the absence of the heterogeneous catalyst, and permitting the selective reaction of the cobalt(III) complex and the reducing agent at the site of the heterogeneous catalyst to produce cobalt(II) as an immobile reaction product in a pattern conforming to the heterogeneous catalyst image pattern; and in a second aqueous alkaline solution performing a second redox reaction by bringing into material contact a peroxide oxidizing agent, the immobile cobalt(II) reaction product and a dye-image-generating reducing agent capable of producing a dye-image-generating reaction product, wherein the peroxide oxidizing agent and the dye-image-generating reducing agent are chosen so that they are essentially inert to oxidation-reduction in the absence of a catalyst, and permitting the selective reaction of the peroxide oxidizing agent and the dye-image-generating reducing agent in a pattern conforming to the heterogeneous catalyst image pattern to permit a corresponding dye image to be formed, wherein each of the first and second redox reactions is performed in an aqueous alkaline solution.