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Thermochromic ink (also called thermochromatic ink) is a type of dye that changes color in response to a change in temperature. [1] [2] [3] It was first used in the 1970s in novelty toys like mood rings, but has found some practical uses in things such as thermometers, product packaging, and pens. [4]
Thermochromic inks or dyes are temperature sensitive compounds, developed in the 1970s, that temporarily change color with exposure to heat. They come in two forms, liquid crystals and leuco dyes . Leuco dyes are easier to work with and allow for a greater range of applications.
Thermochromic ink This page was last edited on 12 April 2024, at 16:43 (UTC). Text is available under the Creative Commons Attribution-ShareAlike 4.0 License ...
This effect is created by using thermochromic ink. Magic mugs are often manufactured and sold as memorabilia. For example, a mug may reveal a picture of the town or monument where it was sold, for example the Haunted Mansion/Grim Grinning Ghost Disney cup. [1] They are sometimes given away to promote organizations.
Matsui Shikiso Chemical started offering a wide variety of products, mainly inks and pigments targeted principally to the textile screen printing industry. Focusing as being an exclusive water base ink producer in the textile industry, Matsui's continued success led to establishing a subsidiary in Los Angeles, California to better service their ...
The spiro form of an oxazine is a colorless leuco dye; the conjugated system of the oxazine and another aromatic part of the molecule is separated by an sp 3-hybridized "spiro" carbon.
A thermal printer Bills and receipts are typically printed on thermal paper. [1]Thermal printing (or direct thermal printing) is a digital printing process which produces a printed image by passing paper with a thermochromic coating, commonly known as thermal paper, over a print head consisting of tiny electrically heated elements.
Thermochromic inks are sometimes used to signal temperature excess or change. Some are reversible while others have a permanent change of color. These can be used alone or with other packaging functions such as barcodes. The inks can also signal a desired temperature for consumers.
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