![]() ![]() Also note that when you wipe down a Rocketbook notebook with a moist cloth, the ink is removed from the page, so you don't have to worry about old ink reappearing in the cold. Cooling the pages below the 40☏/4☌ threshold should restore the pigment of the ink. In order to recover the erased text, leave your notebook in the freezer for a few hours. Recruits, test your memory skills and see if you have what it takes. ![]() Memorizing mission details and important intelligence is critical to your success. Take on the world’s fearless and become an Asphalt legend in the best arcade racing game on iPhone, iPad, Android and Windows 10. STEP 4: With adult help or supervision, press your hot iron onto the paper where your message is. STEP 2: Using your paintbrush, paint a secret message with the lemon juice onto your paper. Please note that this only happens with the Pilot FriXion pens. In the shadowy world of spying, having a good memory is extremely important. STEP 1: Cut a lemon or pour juice into a small bowl. Contents hide 1 General 2 Types 2.1 Inks developed by heat 2. However, the ink can be erased through any exposure to heat, including warm water, a hot car, or even fire! Pilot FriXion pen ink turns clear at 140☏/60☌ and regains its color at 40☏/4☌. Invisible ink, also called security ink or sympathetic ink, is a substance used for writing, which is invisible either on application or soon thereafter, and can later be made visible by simple or complex means. Pilot FriXion ink operates by turning clear when exposed to increased temperature due to the friction of the eraser on the page. If your Rocketbook notebook erased itself by being exposed to extreme heat, have no fear! Your writing can be recovered! ![]()
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