James C Oswald

Title: Innovations by James C. Oswald in Ink Jet Technology

Introduction

James C. Oswald is a notable inventor based in Beaverton, Oregon, with a focus on advancements in ink jet technology. He holds five patents that showcase his innovative contributions to the field. His work primarily revolves around improving the maintenance and cleaning systems for ink jet print heads.

Latest Patents

One of his latest patents is the "Ink Jet Print Head Maintenance System." This system features a purge chamber designed to apply a vacuum to the nozzle orifice surface. A specialized baffle diverts ink entering the purge chamber away from a vent port, through which the vacuum is drawn. An elongated wipe engages the orifice surface, moving at an extremely slow rate to enhance the cleaning operation. Additionally, an air knife directs a narrow stream of air across the nozzle orifice surface for effective cleaning. A specialized drip edge is positioned beneath the orifice surface to direct drops of ink away during the cleaning procedures. A mechanically simple cam mechanism may be used to shift the maintenance system against the nozzle orifice surface for cleaning purposes.

Another significant patent is the "Ink Jet Print Head Face Cleaner." This device provides a controlled air passageway through an enclosure formed against the print face. Air is directed through an inlet into a cavity in the body, which has a face with an opening into the cavity. This face can be sealingly placed against the print face, allowing air to be directed without interruption through the cavity past the ink jet apertures. A vacuum source is attached to the outlet to create subatmospheric pressure in the cavity, further sealing the two faces together. A collection chamber and removable drawer are positioned below the outlet to facilitate the disposal of removed ink.

Career Highlights

James C. Oswald has made significant strides in his career at Tektronix, Inc., where he has developed innovative solutions for ink jet technology. His patents reflect his commitment to enhancing the efficiency and effectiveness of ink jet printing systems.

Collaborations

Throughout his career, Oswald has collaborated with talented individuals such as Hue Phuoc Le and Ted E. Deur. These collaborations have contributed to the successful development of his patented technologies.

Conclusion

James C. Oswald's contributions to ink jet technology through his innovative patents demonstrate his expertise and dedication to improving printing systems. His work continues to influence the industry and