Bradford Stewart

Title: **The Innovative Mind of Bradford Stewart: Pioneering Print Head Technologies**

Introduction

Bradford Stewart is an accomplished inventor based in Vancouver, WA (US), recognized for his contributions to print head technology. With a remarkable portfolio of three patents, his innovations focus on enhancing the performance and efficiency of print head jet stacks, a critical component in the printing industry.

Latest Patents

One of Stewart's latest patents is centered around "Systems and methods for heating and measuring temperature of print head jet stacks." This innovative design includes a jet stack with an integrated heating and temperature measuring element. The key features of this configuration involve a first etched copper layer that acts as a resistive heat source connected in series with a voltage source and a switch. It also encompasses an electrically insulative layer positioned on the back side. A second copper layer contains a temperature sensing element, effectively allowing the print head to monitor its temperature without requiring a thermistor. This advancement eliminates the need for a heat sink, significantly improving the efficiency of the print head’s operation.

Another aspect of his patent further elucidates "Print head jet stack heating and temperature measurement systems and methods." It presents a flex circuit composed of multiple layers, wherein one layer is responsible for heating the jet stack while another layer collects data on its temperature. The innovative layering is separated by an insulative material, making the system more effective. The temperature data relayed to the print head controller allows for real-time adjustments to the jet stack's heating, ensuring optimal performance.

Career Highlights

Bradford Stewart's career is highlighted by his work at Xerox Corporation, a leading entity in the printing industry. His expertise in print head technology has not only contributed to the company's innovative edge but also paved the way for advancements in the field of printing mechanisms.

Collaborations

Throughout his career, Stewart has collaborated with notable coworkers such as Curtis Douglass Keller and Gautam Dhar. Their collective efforts have combined to foster an environment of innovation, pushing the boundaries of what is possible in print technology.

Conclusion

Bradford Stewart exemplifies the spirit of innovation, successfully merging technology with practical application in the printing industry. His patented inventions signify a notable shift towards more efficient and effective print head systems, positioning him as a key figure in technological advancements at Xerox Corporation. As the printing landscape continues to evolve, inventors like Stewart remain at the forefront, driving progress and inspiring future innovation.