FREE INK WRITING INSTRUMENT INCLUDING A MICROFLUIDIC VALVE

摘要

Writing instrument (10) comprising a main body (12) equipped with a writing tip (14), the writing tip (14) being supplied with ink from a free ink reservoir (12), the reservoir (12) being equipped with a pressure regulating device (16) for regulating the pressure within the reservoir (12), the pressure regulating device (16) comprising at least one microfluidic valve (18, 18 ').