The Difference Between Optical Variable Ink and Solar Photosensitive Ink
Optical variable ink (OVI) and solar photosensitive ink (SPI) are both types of security inks that are used to prevent counterfeiting. OVI inks change appearance when viewed from different angles, while SPI inks change appearance when exposed to ultraviolet (UV) light.
Optical variable ink
OVI inks are made up of two components: a dichroic material and a carrier material. The dichroic material is a substance that reflects light in different ways depending on the angle of incidence. When OVI ink is printed on a document, the dichroic material causes the ink to appear to change color or shift when viewed from different angles.
OVI inks are used in a variety of security applications, including:
Banknotes
Passports
Drivers' licenses
ID cards
Tickets
Labels
Solar photosensitive ink
SPI inks are made up of two components: a photosensitive material and a carrier material. The photosensitive material is a substance that changes color when exposed to UV light. When SPI ink is printed on a document, the photosensitive material causes the ink to appear to change color when exposed to UV light.
SPI inks are used in a variety of security applications, including:
Banknotes
Passports
Drivers' licenses
ID cards
Tickets
Labels
Differences between OVI and SPI inks
The main difference between OVI and SPI inks is the way they change appearance. OVI inks change appearance when viewed from different angles, while SPI inks change appearance when exposed to UV light.
Another difference between OVI and SPI inks is the type of security applications they are used in. OVI inks are more commonly used in high-value security applications, such as banknotes and passports. SPI inks are more commonly used in lower-value security applications, such as tickets and labels.
Which type of ink is better?
The best type of ink for a particular security application depends on the specific requirements of the application. For example, banknotes require a high level of security, so OVI inks are often used. Tickets and labels, on the other hand, do not require as high a level of security, so SPI inks are often used.
Ultimately, the decision of which type of ink to use should be made by a security expert who is familiar with the specific requirements of the application.
Print Area is professional in printing industry 20+ years.
Security Paper:Watermark Paper,UV Fiber Paper,Thread Paper
Security Ink:OVI,UV Invisible Ink,Magnetic Ink,Water Sensitive Ink,Watermark Ink,Glow in Dark Ink
Offset Ink:Soy Bean Offset Ink,UV Offset Ink
Printing Materials:PS Plate,Rubber Blanket,Underpacking Foil,Underpacking Paper.
Machine:Die Cutting Machine,Offset Machine,UV Flexo Machine,UV Coated Machine ect.
Please don’t wait and contact with
Caroline：+8618026391301（wechat & whatsapp avaliable.)
Email:fluorescentink@yyink.com
Web:www.printarea.cn
