Information indication process comprises applying a chemical to a metal film, producing a localized electrochemical reaction, clearing the film and releasing the information via an opening

摘要

Information indication process using an irreversible display comprises applying a chemical to a metal film and producing a localized electrochemical reaction between them, thereby clearing the metal film and releasing the information via an opening. Information indication process using an irreversible display comprises applying a chemical to a metal film and producing a localized electrochemical reaction between them without using electromotor power, thereby clearing the metal film and releasing the information via an opening in the metal film. Independent claims are included for an irreversible display with a clearing mechanism comprising a substrate supporting a metal layer and a clearing agent inducing a chemical reaction on contacting the metal layer, the activation of the indication device involving contacting the clearing agent with the metal layer to induce a chemical reaction and the production of the indicator by assembling the components.