SISTEMA REGISTRATORE SENSIBILE ALLA PRESSIONE E PROCEDIMENTO PER FORMARE UNA TRACCIA COLORATA

摘要

Benzyl aryl ethers are useful solvents for chromogenic materials in preparing pressure-sensitive record material wherein a colorless or substantially colorless chromogen is reacted in the presence of a benzyl aryl ether solvent with an acidic sensitizing material to form a colored mark in a pattern determined by the application of localized pressure to the record material. The benzyl aryl ether solvents are heat stable and give particularly fast color development on phenolic resin coated papers.