Brian P Canfield

Title: Brian P. Canfield and Thermal Inkjet Printing Innovations.

Introduction

Brian P. Canfield is an inventor associated with Barcelona, Spain, and Hewlett-Packard Company. His patent work includes innovations in thermal inkjet printhead operation and methods for increasing inkjet printer resolution. He is credited with 4 patents.

Latest Patents

“Control of Ink Drop Volume in Thermal Inkjet Printheads by Varying the Pulse Width” describes a method for selecting an ink drop volume and choosing a pulse width that produces it. The printhead then operates at an energy level above its turn-on energy for that pulse width, enabling control over the volume of deposited ink.

“Inkjet Printer with Increased Print Resolution in the Carriage Scan Axis” presents a single-pass printing system that uses smaller ink droplets to achieve 600 dpi resolution along the carriage scan axis and 300 dpi along the media advance axis. The described approaches provide increased resolution without dot-depletion algorithms, including fast and color-printing modes that place droplets on a 300-by-600 grid.

Career Highlights

Canfield’s listed inventions address practical aspects of inkjet printing: controlling drop size through printhead pulse settings and improving resolution through droplet placement. These approaches reflect work on both printhead operation and printer-level image formation.

Collaborations

Canfield’s listed coworkers include Frank Drogo and Clayton L. Holstun. His work is associated with Hewlett-Packard Company.

Conclusion

Brian P. Canfield’s patent portfolio highlights contributions to thermal inkjet technology, particularly ink drop volume control and increased print resolution.