This invisible ink pens is perfect for writing a secret message only you can see. This ink is invisible to the naked eye, but under UV or black light it fluoresces brightly, showing your message or drawing. This is the perfect tool for secret-writing, and also makes a great present for anyone who wants to feel more like a spy.
How do invisible pens work?
Invisible ink pens are made with special inks that don’t contain color pigments, but glow under UV or black lights. The ink is activated by a chemical reaction, which may involve acid-base or basic- acid reactions, or it might require heat. Some invisible inks are also visible when photocopied.
A typical invisible ink pens has a small, tube-shaped pen with a retractable tip. This is similar to a highlighter. The tip of the pen is protected by a transparent cap. The tip is filled up with invisible ink and when the pen turns on, it squirts the ink out onto the page. This type of ink can be used with any standard printer and with any paper. Some of these pens also come with an invisible ink marker sheet, which is useful for larger writing projects.
There are many ways to make invisible ink visible, but using a UV lamp is the easiest. You can find UV lights that specifically make invisible ink visible, but any bright light will do the trick. Blue light glasses are not able reveal invisible ink, as they filter out UV light.
This new invisible ink is not based on toxic chemicals, unlike older types that were often based on lead. It is colorless in normal light, but glows when you add salt. Researchers have used it to print both text and more complex patterns, such as butterflies and QR codes. They even tested to see how long the ink could last in the open air. The ink lasted three months before it started to degrade.
The best invisible ink pens are easy to use, making them a great choice for children. They’re available in a variety of colors, and kids can have fun scribbling with them and then using the light to reveal their designs. Plus, they have a long-lasting battery, so there’s no need to replace them soon.
The ability to write secret messages is a useful skill for many people, especially those who live in joint living arrangements or at work. This invisible ink pens is a great way to prevent co-workers or roommates from reading your private notes. It’s also a good idea to carry this pen with you in case you need to write down information that you don’t want anyone else to see. Be careful not to expose your invisible pen to bleach or sunlight, as this will cause it to fade.