👉 A cyanotype is a type of device used in color science and technology. It consists of a thin sheet made of metal or plastic that has been coated with a pigment, such as chromium or iron oxide, and is then exposed to light to produce an image of colors. The colors produced by the cyanotype can be controlled through various techniques, including the use of software and hardware. Cyanotypes are commonly used in color science research and applications, such as in colorimetry, optical character recognition,