UV INVISIBLE INK FOR ALL SECURITY CERTIFICATES COLORLESS TO BLUE
COLOR BY OFFSET PRESS
UV Invisible ink, also known as security ink, is a substance used
for writing, which is invisible either on application or soon
thereafter, 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.
UV Invisible Ink ,which can reflect 400-800nm visible light under theUV light,is a kind of Anti-forgery ink.According to the changes
of the
color,this ink can be catalogued to invisible ink,color
ink,color-change ink these 3 kind.Invisible ink is transparent color in common
environment.But under UV light,it can show out
red,yellow,green,blue colors.The color ink can show its color more vivid and colorful.For
example,the color is red in common environment,it can become more
red under UV light.
Other :
