Thermoeraseille

Thermoeraseille is a brand name for a type of erasable ink. This ink is typically used in pens designed for specific applications where the ability to remove writing without damaging the paper is desirable. The ink works through a thermochromic process, meaning its color changes with temperature. When heat is applied, the ink becomes transparent, allowing it to be erased. A common method for applying heat is through friction, such as rubbing the ink with a special eraser tip attached to the pen.

The technology behind Thermoeraseille was developed by the Japanese company Pilot Corporation. They introduced their Frixion line of pens, which utilize this erasable ink, to the market in 2006. These pens have gained popularity for their convenience in note-taking, journaling, and other writing tasks where mistakes are common or revisions are anticipated. The ink's reversibility means that not only can it be erased, but under certain conditions, the ink can reappear if the paper is exposed to cold temperatures. This characteristic is a direct result of the thermochromic properties of the specific chemical compounds used in the ink formulation. While effective for many uses, the erasability can be a disadvantage in situations where permanence is required.