Allan D Donley

Title: Innovations by Allan D Donley

Introduction

Allan D Donley is a notable inventor based in Vancouver, WA (US). He has made significant contributions to the field of inkjet printing technology. With a total of 4 patents to his name, Donley's work focuses on improving the efficiency and accuracy of inkjet print engines.

Latest Patents

One of his latest patents is titled "Method and apparatus for improved swath-to-swath alignment in an inkjet print engine device." This invention addresses ink drop error correction in inkjet printing machines. It utilizes a position extrapolator that responds to conventional position encoder pulses. The device employs a second-order polynomial equation to compensate for ink drop distortions that occur at higher carriage velocities of at least 25 inches per second. This innovation generates a series of nozzle firing sub-pulses that account for varying carriage velocities. Additionally, a fire pulse generator adjusts the firing time of the printing machine nozzles to correct for positional errors induced by carriage velocity.

Another significant patent is the "Integrated translating service station for inkjet printheads." This invention features a servicing station for inkjet printing mechanisms. It includes a translational pallet that carries essential servicing appliances such as wipers, caps, and flaps. The service station frame defines a guide track that supports the pallet for translational movement. This design ensures that the pallet can move in a plane parallel to the printhead plane and perpendicular to the scanning axis of the printhead. The pallet is equipped with a carriage lock and a rack gear driven by a spindle pinion gear, enhancing the overall functionality of the inkjet printing mechanism.

Career Highlights

Allan D Donley has had a distinguished career at Hewlett-Packard Company. His work has significantly advanced the capabilities of inkjet printing technology. His innovative solutions have contributed to the efficiency and reliability of printing processes.

Collaborations

Throughout his career, Donley has collaborated with notable colleagues such as Bret K Taylor and Mark L Salzer. These collaborations have fostered a creative environment that has led to groundbreaking advancements in the field.

Conclusion

Allan D Donley is a prominent inventor whose contributions to inkjet printing technology have made a lasting impact. His innovative patents demonstrate his commitment to enhancing printing efficiency and accuracy. His work continues to influence the industry and inspire future innovations.