Jessen Chen

Title: Jessen Chen’s Contributions to Inkjet Printing Technology.

Introduction

Jessen Chen is an inventor based in Hsinchu, Taiwan. His work focuses on inkjet printing systems, including methods for managing nozzle pulse frequencies and creating printing data for printers that produce ink droplets in different sizes. Chen is associated with the Industrial Technology Research Institute and holds 2 patents.

Latest Patents

Chen’s listed patents address two aspects of inkjet printing.

“Circuit and Method for Estimating Pulse Frequency of Nozzle in Ink-Jet Head” describes a circuit and method for estimating nozzle pulse frequencies without relying on a conventional counting mechanism. The circuit uses DRAM, an adder, and a method control mechanism. After receiving inkjet cycle signals, the DRAM retrieves nozzle pulse-frequency parameters. The adder combines the parameters with weighted values to update them, and the updated values are stored back in the DRAM.

“Method for Creating Printing Data Applied to a Printer Capable of Generating Ink Droplets of Different Sizes” describes a way to generate printing data for printers that can produce different droplet sizes. The method creates a halftoning threshold table from possible combinations of printheads and droplet sizes. Each image pixel is mapped to a combination in the table, producing encoded data that is divided into groups for driving specific printheads. This gives each printhead its own driving data and is intended to improve printing efficiency.

Career Highlights

Chen’s patent work reflects an interest in coordinating printhead operation and image-data processing. His inventions address both the management of nozzle pulse-frequency parameters and the preparation of data for printers with multiple droplet sizes.

Collaborations

Chen’s listed coworkers include Yu-Chu Huang and Jane Huei-Chen Chang. His work is associated with the Industrial Technology Research Institute.

Conclusion

Jessen Chen’s two patents focus on practical inkjet printing challenges, from estimating nozzle pulse frequencies to efficiently preparing print data for different droplet sizes.