The surface of the paper is coated with a solid-state mixture of a dye and a suitable matrix; a combination of a fluoran leuco dye as an example. When the matrix is heated above its melting point,....
The surface of the paper is coated with a solid-state mixture of a dye and a suitable matrix; a combination of a fluoran leuco dye as an example. When the matrix is heated above its melting point, the dye reacts with the acid, shifts to its colored form, and the changed form is then conserved in a metastable state when the matrix solidifies back quickly enough.
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Usually, the coating will turn black when heated, but coatings that turn blue or red are sometimes used. While an open heat source, such as a flame, can discolor the paper, a fingernail swiped quickly across the paper will also generate enough heat from friction to produce a mark.
Company Details
Established in 1997, with its headquarters in Delhi India, Barcode Vault is an engineering company that specializes in designing, reselling, distributing barcode printing products that lead the industry in the value price, high performance category. Barcode Vault has offices in the Delhi and Jaipur and its products are distributed world-wide. Barcode Vault has created its success and earned a loyal following of thousands of customers by providing very affordable products that are extremely well engineered and supported by a company and reseller Partner network that is 100% dedicated to long-term customer satisfaction.
Nature of Business Manufacturer / Exporter / Service Provider / Supplier / Retailer / Retailer
Number of EmployeesBelow 20
Year of Establishment1999
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