Joseph D Hart

Title: Joseph D Hart: Innovator in Ink Jet Printing Technology

Introduction

Joseph D Hart is a notable inventor based in Vancouver, WA (US). He has made significant contributions to the field of ink jet printing technology. His innovative approach has led to the development of a unique apparatus and method that enhances the efficiency of ink drop modulation.

Latest Patents

Joseph D Hart holds a patent for an "Apparatus and method for drop size modulated ink jet printing." This invention provides on-demand drop volume modulation by utilizing a single transducer driving waveform to drive an ink jet. The driving waveform includes at least a first portion and a second portion that each excites a different modal resonance of ink in an ink jet orifice to produce ink drops having different volumes. A control signal is applied to the driving waveform to actuate the selected portion of the waveform to eject the desired ink drop volume for a given pixel. The control signal also cancels the non-selected portion(s) of the waveform to avoid extraneous excitation of the transducer.

Career Highlights

Joseph D Hart is associated with Xerox Corporation, a leading company in the field of printing and imaging solutions. His work at Xerox has allowed him to focus on advancing ink jet technology, contributing to the company's reputation for innovation.

Collaborations

Throughout his career, Joseph has collaborated with notable colleagues, including Ronald F Burr and Eric C Segerstrom. These collaborations have fostered a creative environment that encourages the development of cutting-edge technologies.

Conclusion

Joseph D Hart's contributions to ink jet printing technology exemplify the spirit of innovation. His patent for drop size modulation represents a significant advancement in the field, showcasing his expertise and dedication to improving printing methods.