Abstract: An image-forming material which includes on a support a coating layer containing at least (A) a microcapsule, which encapsulates (1) a leuco dye that forms color upon oxidative development and (2) a photooxidizing agent and (B) a reducing agent, wherein the leuco dye is a xanthene derivative represented by the following formula (1): ##STR1## wherein R.sup.1 and R.sup.2, which may be the same or different, each designates a hydrogen atom, an alkyl group, an aralkyl group, or an aryl group; R.sup.3 designates a hydrogen atom, an alkyl group, an aralkyl group, an aryl group, a halogen atom, an alkoxy group, an aryloxy group, an alkylthio group, or an arylthio group; R.sup.4 and R.sup.5 which may be the same or different, each designates a hydrogen atom, an alkyl group, an alkoxy group, a halogen atom, a trifluoromethyl group, a substituted carbonyl group, or a substituted sulfonyl group; and R.sup.6 designates a hydrogen atom, an alkyl group, or a substituted carbonyl group; andwherein R.sup.1 and R.sup.

Abstract: An optical image-recording material comprising:(a) microcapsules, in which at least one leuco dye capable of forming a color by oxidation and at least one photo-oxidizing agent are enclosed together, and (b) at least one reducing agent not enclosed in the microcapsules, or(c) microcapsules, in which at least one reducing agent is enclosed, and (d) both at least one leuco dye capable of forming a color by oxidation and at least one photo-oxidizing agent not enclosed in the microcapsules,wherein the microcapsules have capsule walls made from a material which lowers its permeability barrier to at least one component selected from the photo-oxidizing agent and the reducing agent when the capsule wall material is heated above its glass transition temperature, and the leuco dye is a xanthene compound having an N-substituted anilino group substituted by an electron attracting group.

Abstract: A light image forming material comprising a support having provided thereon a layer comprising microcapsules containing a leuco dye capable of developing a color through oxidation and a photo oxidizing agent, a reducing agent provided outside the microcapsules, and the layer further comprising carboxy-modified polyvinyl alcohol and epoxidated polyamide resin for imparting high water resistivity.

Abstract: An image-forming material and an image recording method for using the same are disclosed. The image-forming material comprises microcapsule and a reducing agent which is present outside of the microcapsules, wherein the microcapsules contain (a) a leuco dye capable of oxidatively developing a color, (b) a photo-oxidizing agent, and (c) a phenolic compound. The image-forming material exhibits excellent image reproducibility, preservability before use, and image preservability.

Abstract: An optical image forming material comprising a support (A) at least one member selected from the group consisting of oxidative-developable leuco dyes, (B) at least one member selected from the group consisting of photo-oxidizing agents, (C) at least one reducing agent and (D) at least one organic sulfonamide compound and/or at least one member selected from the group consisting of hydroxy compounds represented by the following formula (I) or (II) ##STR1## wherein R.sub.1 to R.sub.11 are as described herein, the leuco dye (A) and the photo-oxidizing agent (B) being present in microcapsules, and the reducing agent (C) and the organic sulfonamide compound and/or the hydroxy compound (D) being present outside of the microcapsules.