Posts Tagged ‘heat’

Invisibility ink

May 5, 2010

The problem with the invisible ink is that, once it is heated up once then it stays in this form, so that you can always see it, it doesn;t vanish bak away. This is something that I don’t want for the book, as I want everyone to see the book and discover its contents in a fresh state. Maybe it could be a cool idea for my business cards or postcards, something that users interact with.


Lemon Juice Invisibility

May 5, 2010

Simon gave me another heads up on a way to hide image/text… Lemon Juice.

Then when looking at science for kids, trying to find emulsion paper, I saw the Lemon Juice invisibility. It gives you simpe instructions on how to do it but basically you just use lemon juice to create your text/image, which you obviously will not be able to see, until you hold a light to it, which heats it up and then you can view what you created in the lemon juice.

Some websites are suggesting that it is quite hard to reveal the message and you have to heat the paper up alot. I am not sure how I will really be able to do this is the page is attached to the book and obviously I do not want it to be dangerous.

Other products you can use for invisibility:

  • baking soda
  • corn starch
  • milk

B&H Colour Change

April 19, 2010

Joe Hughes shared this link with me 🙂

In the print section it showcases printed work with ink sensitive to: heat, touch, chill, moisture, cook, UV, game cards, stress, packaging/labelling and chamelon inks.

The touch reactive ink is responsive to body temperature.

The moisture reactive ink is responsive to liquid or wet food. A blank panel reveals a message.

A high temperature ink formulation that is invisible to the eye. When oven cooked or microwaved a message will appear permanently.

Photochromic inks change colour dramatically when placed in daylight. The colour change is reversible. Our photochromic inks can also be used as a UV warning device.

Stress Check Cards measure your stress or anxiety level through your thumb on a special liquid crystal pad on the card.

Another number of great, interactive products. This has enabled me to find out about even more types of smart inks and their functions. Not only does the website just deal with print, there are different interactive products, such as these drink stirrers that change colour brightly when placed in a cold drink and are easily branded.:

And these spoons that change colour in hot and cold food or in your mouth or hand:

Smart Inks

April 16, 2010

Just the other week when researching I came across an Internet page on smart inks. They showed two books, one that had designs created with thermochromic inks and the other with phosphorescent ink.

They involve great ideas, beautiful designs and are so interesting and different. The fact that part of the design is actually being hidden and how the book feels as though it comes alive is brilliant. It also involves the element of surprise and gradual revealing, which always keeps the reader/viewer entertained and drawn to the book.  

I felt great that I had found out about these inks and started to try and find out more but obviously you just end up finding out that they are very expensive. I went on several print companies Internet pages and even emailed one to find out if they used smart inks, with still having know reply. So it wasn;t obvious that alot of these print companies used these smart inks. So even though I realised that I would probably be unable to ever use these inks it was great that I found out about them for the purpose of inspiration and ideas generation. They could have potentially been a greta idea for my FMP book. But never give up.

These are the two books that the blog showed:

The egg book uses thermochromic ink. The baby birds are hidden in the egg, until the reader places there hand over the egg, warming it up and therefore revealing the baby birds.

This is the second book; Spot Nocturnal Animals. The cover is blank and the inside pages only have animal footprints on, that is in the daylight. Until at night the book reveals the nocturnal animals as the pages come to life.

This is the link to the blog page, definitely worth having a look: