Electronic fountain pen - a highly integrated stand-alone microdosage system

For the first time an electronic fountain pen is presented equal in size with conventional pens. It can be regarded as the first fully functional, highly integrated, miniaturized and self-sustaining microdosage system of its kind operating under real world conditions. The main components are a liquid level sensor, a microvalve and a bubble- and particle tolerant fluidic system. The pen has been optimized with respect to minimum energy consumption. It contains a programmable ASIC and is powered by two standard watch batteries ensuring operation over a period of 2 years under standard conditions.