Erasing and restoring writings with thermochromic pen inks: A physical, simple, and practical method

The EDFs study handwriting and examine the imprints placed on the writing surface and in the scriptural materials involved in the preparation of the document on a daily basis. In the case of thermochromic ink pens, different brands are available on the market, which allow for easy erasure as well as the subsequent restoration of writings. This is achieved by removing the ink with the rubber incorporated at the end of the writing instrument, or by applying heat (convection). Although there are various studies on friction and development, this work will focus on a physical, practical, and simple study method.