James H Yu

Title: Innovations of James H. Yu

Introduction

James H. Yu is an accomplished inventor based in Spring Valley, OH (US). He holds 2 patents that showcase his expertise in the field of ink jet technology. His innovative contributions have significantly impacted the printing industry.

Latest Patents

One of his latest patents is for an ink jet fluid system. This system includes a print head that defines a fluid reservoir and features at least one orifice that communicates with the reservoir to generate a jet drop stream from the fluid. The design incorporates inlet and outlet valves connected to the print head's openings, along with a siphon line that extends downward and connects to the outlet valve. A float valve is integrated into the system to maintain sub-atmospheric fluid pressure within the print head after the printer is shut down. This float valve prevents air from entering the fluid supply and ensures that ink does not flow out of the vent opening.

Another notable patent by Yu is for a method and apparatus for momentumless shutdown of a jet drop recorder. This invention allows for the termination of liquid coating material flow from a jet drop recording device without causing splattering or seepage. The process involves pumping coating material under pressure through an inlet valve to a manifold in the printing head. Shutdown is initiated by closing the inlet valve, and once the pressure in the manifold drops to a minimum, an outlet valve is opened to rapidly reduce the pressure and terminate the flow of coating material.

Career Highlights

James H. Yu has made significant strides in his career, particularly through his work at The Mead Corporation. His innovative patents reflect his dedication to advancing printing technology and improving operational efficiency.

Collaborations

Throughout his career, Yu has collaborated with notable colleagues, including George W. Denlinger and Robert A. Wiley. Their combined expertise has contributed to the successful development of innovative solutions in the printing industry.

Conclusion

James H. Yu's contributions to ink jet technology through his patents demonstrate his commitment to innovation and excellence in the field. His work continues to influence the printing industry and inspire future advancements.