Peter L Duffield

Title: Innovations by Peter L. Duffield

Introduction

Peter L. Duffield is a notable inventor based in Wayland, Massachusetts, who has made significant contributions to the field of inkjet printing technology. With two patents to his name, Duffield has developed innovative methods that enhance the functionality and efficiency of inkjet printers. His work is primarily associated with Advanced Color Technology, Inc., where he has collaborated with other talented professionals in the industry.

Latest Patents

Duffield's latest patents include a method of making a printing head for an inkjet printer and an ink control system for inkjet printers. The first patent describes a method for creating a print head that incorporates a piezoelectric transducer within a metal housing. This design features an annular channel sealed by a thin metal diaphragm, forming an ink chamber. The transducer's sudden voltage removal causes the diaphragm to expand, reducing the ink chamber's volume and forcing a droplet of ink from the printing orifice. The housing's internal taper allows for easy groove cutting, and the mandrel used in the process is designed to create a cold weld with the housing.

The second patent focuses on a pressurized ink supply system for a three-color inkjet printer. This system includes three stationary primary ink reservoirs housed in a disposable cartridge, connected to secondary reservoirs on the print head's movable carriage. The design allows for automatic ink replenishment and includes an out-of-ink alarm, ensuring that the ink levels are maintained without operator intervention. An optical sensor in each secondary reservoir detects ink levels and activates solenoid valves to control ink flow, alerting the operator when the primary reservoir is empty.

Career Highlights

Throughout his career, Duffield has demonstrated a commitment to advancing inkjet printing technology. His innovative patents reflect his expertise and dedication to improving the efficiency and reliability of printing systems. Working at Advanced Color Technology, Inc. has provided him with the platform to develop and implement his ideas in a collaborative environment.

Collaborations

Duffield has worked alongside talented colleagues, including Arthur L. Cleary and Calvin M. Winey, III. These collaborations have contributed to the successful development of his patents and innovations in the field.

Conclusion

Peter L. Duffield's contributions to inkjet printing technology through his patents showcase his innovative spirit and technical expertise. His work continues to influence the industry, making significant strides in enhancing