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The disclosure is generally related to a decoder system and, more particularly, to a decoder system comprising a coding composition, a decoding composition and optionally, an erasing composition. The disclosure also provides decoder writing instrument systems comprising a coding writing point in flu

The disclosure is generally related to a decoder system and, more particularly, to a decoder system comprising a coding composition, a decoding composition and optionally, an erasing composition. The disclosure also provides decoder writing instrument systems comprising a coding writing point in fluid communication with a coding composition, a decoding writing point in fluid communication with a decoding composition and optionally, an erasing writing point in fluid communication with an erasing composition.

대표청구항 ▼

What is claimed is: 1. A decoder system, comprising: a coding composition comprising a solvent system including a first solvent and either a volatile acid or a volatile base, a color change dye capable of becoming substantially colorless upon evaporation of the solvent system, and a first color-des

What is claimed is: 1. A decoder system, comprising: a coding composition comprising a solvent system including a first solvent and either a volatile acid or a volatile base, a color change dye capable of becoming substantially colorless upon evaporation of the solvent system, and a first color-destroying agent; a decoding composition comprising a second solvent and an eradicable dye capable of becoming substantially colorless when contacted with the color-destroying agent; and, an erasing composition comprising a third solvent and a second color-destroying agent. 2. The decoder system according to claim 1, wherein the coding composition solvent system comprises a volatile base. 3. The decoder system according to claim 2, wherein the volatile base is selected from the group consisting of dimethylamino-2-propanol, ammonia, and alkylamines. 4. The decoder system according to claim 2, wherein the color change dye is selected from the group consisting of phthalein-type dyes, phenol-type dyes, cyanine, and bis-(2,4-dinitro-phenyl)acetic acid ethyl ester. 5. The decoder system according to claim 1, wherein the coding composition solvent system comprises a volatile acid. 6. The decoder system according to claim 5, wherein the volatile acid is selected from the group consisting of formic acid, acetic acid, and trifluoroacetic acid. 7. The decoder system according to claim 5, wherein the color change dye is selected from the group consisting of phthalide-type color-forming dyes, fluoran dyes, leuco dyes, spiropyrane dyes, rhodaminelactam dyes, triarylmethane dyes, and chromene dyes. 8. The decoder system according to claim 1, wherein the eradicable dye comprises a triphenylmethane moiety or a methine moiety. 9. The decoder system according to claim 1, wherein the eradicable dye is selected from the group consisting of Auramine O, Basic Yellow 2, Basic Yellow 11, Basic Yellow 13, Basic Yellow 21, Basic Yellow 28, Basic Yellow 29, Basic Yellow 40, Basic Yellow 49, Acid Blue 22, Acid Blue 83, Acid Blue 90, Acid Blue 93, Acid Fuchsin, Acid Green 3, Acid Green 5, Acid Green 9, Acid Magenta, Acid Roseine, Acid Rubin, Acid Violet 17, Acid Violet 19, Acid Violet 49, Alizarol Cyanin R, Aluminon, Aniline Blue Ws, Basic Blue 8, Basic Blue 15, Basic Blue 20, Basic Blue 26, Basic Fuchsin, Basic Green 4, Basic Red 9, Basic Red 13, Basic Red 14, Basic Red 15, Basic Red 29, Basic Red 46, Basic Violet 2, Basic Violet 3, Basic Violet 4, Basic Violet 14, Chrome Violet Cg, Chromoxane Cyanin R, Cotton Blue, Crystal Violet, Dahlia, Diamond Green B, Eriochrome Cyanin R, Ethyl Green, Ethyl Violet, Fast Green Fcf, Food Green 3, Gentian Violet, Helvetia Blue, Hoffman's Violet, Light Green, Lissamine Green Sf, Magenta 0, Magenta I, Magenta II, Magenta III, Malachite Green, Methyl Blue, Methyl Green, Methyl Violet, Methyl Violet 2b, Methyl Violet 10b, Mordant Blue 3, Mordant Violet 39, New Fuchsin, Night Blue, Acid Orange 10, Acid Orange 21, Pararosanilin, Primula, Rosanilin, Solochrome Cyanin R, Victoria Blue 4r, Victoria Blue B, Victoria Green B, and Water Blue I. 10. The decoder system according to claim 1, wherein the color-destroying agent is a basic nucleophilic anion. 11. The decoder system according to claim 10, wherein the basic nucleophilic anion is selected from the group consisting of sulfites, metasulfites, chlorites, and hydroxides. 12. A decoder writing instrument system, comprising: a coding writing point in fluid communication with a coding composition comprising a solvent system including a first solvent and either a volatile acid or a volatile base, a color change dye capable of becoming substantially colorless upon evaporation of the solvent system, and a first color-destroying agent; a decoding writing point in fluid communication with a decoding composition comprising a second solvent and an eradicable dye capable of becoming substantially colorless when contacted with the color-destroying agent, and, an erasing writing point in fluid communication with an erasing composition comprising a third solvent and a second color-destroying agent. 13. The decoder writing instrument system according to claim 12, wherein the coding writing point, the decoding writing point, and the erasing writing point are disposed in a single writing instrument. 14. A method of writing in code, comprising: forming coded information by applying a coding composition comprising a solvent system including a solvent and either a volatile acid or a volatile base, a color change dye capable of becoming substantially colorless upon evaporation of the solvent system, and a color-destroying agent to a substrate; and, forming either a reverse image or a positive image of the coded information by applying a decoding composition about the coded information. 15. The method of writing in code according to claim 14, further comprising erasing the reverse image or positive image by applying an erasing composition over the decoding composition. 16. A method of writing in code, comprising: forming coded information by applying a coding composition to a substrate, wherein the coding composition comprises a colorant capable of becoming substantially colorless after application and a color-destroying agent; revealing the coded information by applying a decoding composition about the coded information, wherein the decoding composition contains either a pH-adjusting component in an amount capable of restoring the color of the colorant or an eradicable dye capable of reacting with the color-destroying agent of the coding composition so as to render the eradicable dye substantially colorless. 17. The method of writing in code according to claim 16, further comprising erasing the coded information. 18. A decoder system, comprising: an initially-colored coding writing composition containing a colorant capable of becoming substantially colorless and a first color-destroying agent; a decoding writing composition containing either a pH-adjusting component in an amount capable of restoring the color of the colorant or an eradicable dye capable of reacting with the first color-destroying agent of the coding writing composition so as to render the eradicable dye substantially colorless; and, an erasing writing composition containing a second color-destroying agent capable of rendering the eradicable dye of the decoding writing composition substantially colorless.