David John Worboys

Title: **David John Worboys: A Pioneer in Inkjet Printer Technologies**

Introduction

David John Worboys, based in Balmain, Australia, is a prolific inventor with a remarkable portfolio of 26 patents. His work primarily focuses on advanced technologies in inkjet printing, showcasing his innovative spirit and contribution to the field of printing technology.

Latest Patents

Among Worboys' latest inventions are two significant patents related to inkjet printers. The first patent describes a printer utilizing pressure control of air in a sump. This innovative design includes a printhead with a plurality of nozzles, an ink tank located upstream, and a sump that collects unused ink. A unique feature of this printer is the lower portion of the sump, which holds unused ink, and the upper portion creating a headspace of air. A pump connected to the sump draws air into the atmosphere, generating negative pressure in the printhead, facilitating ink communication effectively from the ink tank to the printhead.

The second patent introduces an inkjet printhead with pressure pulse priming. It features a printhead equipped with an array of ink ejection nozzles, an upstream ink line, and a downstream ink line connecting to a sump. The design includes a pump that draws fluid from the printhead and a gas inlet to manage atmospheric pressure during priming operations. Additionally, an accumulator in the upstream line generates a positive pressure pulse for improved priming efficiency.

Career Highlights

David John Worboys has had a distinguished career, marked by his time at renowned research companies. He contributed significantly to the advancement of inkjet technologies while working at Silverbrook Research Pty Ltd and Zamtec Limited. His efforts and ingenuity in these roles have cemented his status as a leading inventor in the printing industry.

Collaborations

Throughout his career, Worboys has collaborated with several notable individuals, including Kia Silverbrook and John Douglas Peter Morgan. These partnerships have enhanced his research and development efforts, leading to innovative breakthroughs in inkjet printing technology.

Conclusion

David John Worboys stands out in the field of printing innovation with his extensive patent portfolio and notable contributions to inkjet printing technology. His inventions, particularly in pressure control systems and priming mechanisms, demonstrate his commitment to advancing printing technologies. As the industry continues to evolve, Worboys' work will undoubtedly influence future developments in inkjet systems.