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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.
Video of hot water being poured into a "magic mug" and the subsequent colour change A promotional magic mug filled with a hot liquid (left) and empty (right). A magic mug, also known as a heat changing mug, transforming mug, or disappearing mug is a mug that changes color when it is filled with a hot liquid.
Carbonless copy paper has micro-encapsulated dye or ink on the back side of the top sheet, and a clay coating on the front side of the bottom sheet. When pressure is applied (from writing or impact printing), the dye capsules rupture and react with the clay to duplicate the markings made to the top sheet.
A receipt printed on thermal paper. A heat source near the paper will color the paper. Paper roll for thermal fax machine. Thermal paper (often supplied in roll form, and sometimes referred to as an audit roll) is a special fine paper that is coated with a material formulated to change color locally when exposed to heat.
That little gold man bestowed as filmmaking's highest honor at the Academy Awards has a name. It's Oscar. Yes, the Academy of Motion Picture Arts and Sciences, the governing body for the glitzy ...
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.
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