David W Phillips

Title: David W. Phillips: Innovator in Printing Technology

Introduction

David W. Phillips is a notable inventor based in Lexington, KY (US). He has made significant contributions to the field of printing technology, holding a total of 3 patents. His work primarily focuses on enhancing the efficiency and accuracy of inkjet printing systems.

Latest Patents

One of his latest patents is for a bar code with an alignment mark. In this invention, alignment mark 5 is printed by printer 30 during the same operation in which bar code 3 is printed. Subsequent alignment is achieved by the optical scanner 32 centering on mark 5. In a specific application, a factor relating to the vertical position of scanner 32 to printer 30 is obtained by scanning mark 5 shortly after it is printed. This factor is then used to position the scanner 32 to read for errors after a line of code 3 is printed. Another significant patent by Phillips involves raster slant control in an inkjet printer. This invention describes an inkjet printer where the nozzle for emitting a stream of ink drops, the charge electrode for charging ink drops, and the deflection electrodes are mounted on a carrier that moves relative to the ink drop record receiving media. To compensate for the inclination of the image formed by the carrier movement, a voltage gradient is applied across at least one of the deflection electrodes to effect electric field distortion, thereby compensating for the slant due to carrier velocity.

Career Highlights

David W. Phillips has had a distinguished career at International Business Machines Corporation (IBM). His innovative work has contributed to advancements in printing technology, making processes more efficient and reliable.

Collaborations

Throughout his career, Phillips has collaborated with notable coworkers, including Roderick S. Heard and James D. Hill. Their combined expertise has fostered a creative environment that has led to numerous technological advancements.

Conclusion

David W. Phillips is a prominent figure in the field of printing technology, with a focus on improving the functionality of inkjet printers. His contributions through his patents have significantly impacted the industry, showcasing his innovative spirit and dedication to technological advancement.