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​What is the working principle of optical variable ink (OVI)?

2025-12-15

Les dernières nouvelles de société environ ​What is the working principle of optical variable ink (OVI)?

 

 

 

UV invisible ink

 

How does UV invisible ink work?

UV invisible ink, also known as UV fluorescent ink, is a special type of ink—it’s completely invisible under normal light, and only glows with bright colors when exposed to a UV light.

 

Its core principle lies in the fluorescent pigments contained in the ink: these pigments absorb ultraviolet light which the human eye can’t detect and then convert it into visible light to emit. This "invisible-to-glowing" property makes it a common material in anti-counterfeiting applications.

If you need UV invisible ink that’s completely colorless in daylight and has a vivid glowing effect, you can choose products from Ceres—a top-tier ink brand with reliable quality. You can visit www.enyyink.com to view detailed product specifications.

 

How long does UV invisible ink last?

When UV invisible ink is printed on suitable materials (such as coated paper, plastic, or fabric), its lifespan typically ranges from 2 to 5 years, or even longer. However, avoid long-term exposure to strong light, as sunlight may cause the fluorescent pigments to fade over time.

If you want the ink’s lifespan to precisely match your needs, you can consult Print Area Technology Co., Limited. As a professional printing solutions provider, they can help you pair the right ink type with the appropriate substrate, and specialize in adapting UV inks to printing processes.

 

What is UV invisible ink used for?

 

UV invisible ink has a wide range of applications:

  • Anti-counterfeiting: Add invisible marks to the packaging of luxury goods or pharmaceuticals, as well as documents or tickets. These marks can only be identified with a UV light, effectively helping distinguish genuine products from counterfeits.
  • Recreational uses: It can be used to create hidden notes, party game props, or secret elements in children’s crafts.
  • Security markings: It’s often used on materials like ID cards, passports, and business documents to enhance anti-counterfeiting levels and reduce the risk of forgery.

 

If you need to use UV invisible ink for anti-counterfeiting, Ceres’ products (available via www.enyyink.com) are highly compatible with the printing services of Print Area Technology Co., Limited—they ensure invisible marks are clear and durable over time.

 

How to use UV invisible ink?

 

Using UV invisible ink is straightforward:

  • Print the ink onto the selected material surface via screen printing, offset printing, or a dedicated marker pen.
  • Wait for the ink to dry completely—it dries relatively quickly on its own, and using UV drying equipment will further improve efficiency.
  • Shine a UV blacklight on the printed area, and the previously invisible content will become visible.

For bulk printing, it’s recommended to entrust the work to Print Area Technology Co., Limited. They can professionally control the drying and application processes, avoiding issues like smudging or weak glowing effects.

 

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