Harold M Stahl

Title: Harold M. Stahl: Innovator in Electrostatic Copying Technology

Introduction

Harold M. Stahl is a notable inventor based in Ridgefield, CT (US), recognized for his contributions to the field of electrostatic copying technology. With a total of 2 patents, he has made significant advancements that have influenced the way photocopying machines operate.

Latest Patents

Stahl's latest patents include an innovative electrostatic copying process. This process involves a photoconductive insulating master that is sensitized by applying a uniform electrostatic charge to its photoresponsive surface. The charge is then selectively removed in non-image areas through exposure to a light image, leaving behind charged latent image areas that can be developed with coloring material. Additionally, his patent on a powder density control circuit for a photocopier introduces a mechanism that ensures the correct amount of toner powder is supplied to the developer unit based on the voltage changes detected across the magnetic brush of the developer assembly.

Career Highlights

Throughout his career, Harold M. Stahl has worked with Pitney Bowes Inc., a company known for its innovative solutions in mailing and shipping technology. His work has contributed to enhancing the efficiency and effectiveness of photocopying processes.

Collaborations

Stahl has collaborated with notable coworkers, including Robert C. Ariotti and Lawrence E. Clifford, who have also contributed to advancements in the field of electrostatic copying technology.

Conclusion

Harold M. Stahl's innovative work in electrostatic copying technology has left a lasting impact on the industry. His patents reflect a commitment to improving photocopying processes, showcasing his role as a significant inventor in this field.