Duane R Darr

Title: Duane R. Darr: Innovator of the Multi-line Serial Printer

Introduction

Duane R. Darr is a notable inventor located in San Jose, California, recognized for his innovation in printing technology. With a focus on enhancing the efficiency of printing processes, Darr holds a patent that showcases his inventive contributions to the industry.

Latest Patents

Darr's patent, titled "Multi-line Serial Printer," addresses various challenges in the printing process. The invention allows a predetermined window height, at least three times the height of normal printed characters, to be printed in a single horizontal sweep of the printhead across the page. This innovative method begins with sorting character-oriented data vertically, which is then processed into a horizontal "print window" of characters until reaching a character that cannot fit. Additionally, the technology transforms symbolic data in the print window into bitmapped image data slightly in advance of the current printhead position, significantly increasing throughput. Notably, the printhead's velocity varies according to the complexity of the image formation process, and for thermal printing, the current passing through the activated printhead electrodes is adjusted accordingly. Furthermore, to optimize print quality and prolong equipment lifespan, the vertical positioning of pixels within the print window is varied.

Career Highlights

Duane R. Darr's career is marked by his significant contributions while working at Qume Corporation. His inventive spirit and dedication to advancing printing technology have established him as a valuable asset within the company and the broader field.

Collaborations

Throughout his professional journey, Darr has collaborated with talented individuals such as Scott M. Graham and Kenneth R. Ewing. Together, they have contributed to advancements in printing technologies and have fostered a collaborative spirit that enhances innovation in their shared industry.

Conclusion

Duane R. Darr's inventive contributions, particularly through his patent for the Multi-line Serial Printer, exemplify his commitment to technological advancement. His work at Qume Corporation and collaborations with esteemed colleagues further highlight the impact of his innovations on the printing industry. Darr continues to inspire future inventors and innovators through his significant achievements.