Browse Prior Art Database

Digital Pump Driver Circuit

IP.com Disclosure Number: IPCOM000069999D
Original Publication Date: 1978-Jul-01
Included in the Prior Art Database: 2005-Feb-21

Publishing Venue

IBM

Related People

Authors:
Bishop, CA Hill, JD Kelly, MJ Quinn, PA [+details]

Abstract

In a continuous jet-type ink jet printing system, an ink pump is needed to precisely control the ink pressure to the nozzle. In current designs, ink pumps are driven with a solenoid that is controlled by a rather complex electronic circuit. Due to mechanical constraints the electronic pump driver circuit must have a fixed duty cycle and frequency. Also, the peak current supplied by the circuit must be controlled by a digital word sent from the system processor.