Ronald L Adams

Title: The Innovative Contributions of Ronald L Adams

Introduction

Ronald L Adams is a notable inventor based in Portland, OR (US), recognized for his significant contributions to the field of ink-jet printing technology. With a total of 7 patents, Adams has developed innovative solutions that enhance the efficiency and performance of ink-jet print heads.

Latest Patents

One of his latest patents is the "Ferroelectric relaxor actuator for an ink-jet print head." This invention utilizes a ferroelectric relaxor ceramic actuator material, such as lead magnesium niobate (PMN), which boasts high electromechanical conversion efficiency. The actuator operates effectively across a wide range of temperatures and does not require permanent polarization. It provides useful mechanical activity with reduced electrical drive voltages. The PMN actuator can be bonded to an actuator diaphragm using high-temperature soldering or brazing processes. Additionally, the patent describes a phase-change ink-jet print head that employs a PMN actuator compounded with lead titanate (PT) to optimize performance.

Another significant patent is the "Method and apparatus for producing dot size modulated ink jet printing." This invention introduces an ink jet apparatus and method that enables high-resolution gray scale printing. By utilizing multiple PZT drive waveforms, each with a specific spectral energy distribution, the apparatus can excite different modal resonances of ink in the print head orifice. This allows for the ejection of ink drops with diameters smaller than the orifice diameter, improving jetting reliability and reducing contaminant susceptibility.

Career Highlights

Throughout his career, Ronald L Adams has worked with various companies, including Tektronix, Inc. His experience in these organizations has contributed to his expertise in developing advanced printing technologies.

Collaborations

Adams has collaborated with notable coworkers such as Joy Roy and Hue Phuoc Le, further enhancing his innovative work in the field.

Conclusion

Ronald L Adams has made remarkable contributions to the field of ink-jet printing through his innovative patents and collaborations. His work continues to influence the industry and improve printing technology.