Fluorescent ink contains special pigments that absorb ultraviolet (UV) light and instantly re-emit this energy as visible light. This makes the ink appear incredibly bright, almost glowing, even in daylight. The human eye perceives this re-emitted light as a vibrant, neon color.
How Fluorescent Ink Works
The key to fluorescent ink's brightness lies in its pigments. These pigments are designed to absorb invisible UV light (a type of light found in sunlight and some artificial light sources) and convert it into visible light within the visible spectrum. This process makes the printed area appear significantly brighter and more intense than inks that simply reflect light.
Types and Applications of Fluorescent Inks
Fluorescent inks are used in various applications, showcasing their versatility:
- Highlighters: The vibrant glow of fluorescent highlighters makes them ideal for drawing attention to text or important sections of documents.
- Printing: Fluorescent inks are used in various printing methods, including direct-to-media printing, sublimation printing, and screen printing. This allows for eye-catching designs and unique prints on various materials.
- Art Supplies: Artists use fluorescent acrylic inks to create vibrant and luminous artwork.
- Security Printing: Due to their distinctive properties, fluorescent inks can be used in security printing applications for authentication purposes.
Advantages of Using Fluorescent Inks
- Increased Visibility: Fluorescent inks significantly increase the visibility and vibrancy of prints and designs.
- Unique Prints: They offer a unique and eye-catching visual effect, setting designs apart.
- Profit Enhancement: Businesses can increase profits by offering products with unique, fluorescent designs.
Several resources highlight various aspects of fluorescent inks: One source describes them as “happy inks” with "lively assortment of cheerful colours," while another points out their use in creating "unique prints" and enhancing profitability. Additionally, research papers explore the use of biocompatible fluorescent inks with specific properties, and many commercial suppliers offer fluorescent inks for different applications, including printers and artists' supplies.
