Security Printing Ink Uv Invisible Ink Black To Red
Uv Invisible ink:UV Invisible ink, also known as security ink, is a substance used for writing, which is invisible either on application or soonthereafter, and which later on can be made visible by some means. Invisible ink is one form of steganography, and it has been used in espionage. Other uses include anti-counterfeiting, property marking, hand stamping for readmission, fun children's games, and marking for the purpose of identification in manufacturing.
Printing type:Offset printing, screen printing
Color: Colorless to Yellow, Colorless to Green, colorless to blue, colorless to red and so on.
As you could see in the picture, when the invisible ink under the sunlight, it will look transparent .When the Invisible Ink under the uv light, the invisible ink which is on the left one is colorless to yellow, the right one is colorless to green.