Company Filing History:
Years Active: 2000-2005
Title: Y Grant Chang: Innovator Behind the Constant Density Printer System
Introduction
Y Grant Chang, an esteemed inventor based in Irvine, CA, has made significant contributions to the field of printing technology with a total of six patents to his name. His innovative work primarily focuses on improving the efficiency and reliability of printer systems, culminating in his latest invention, which enhances ink distribution.
Latest Patents
One of Y Grant Chang's most notable inventions is the Constant Density Printer System. This system features an ink density closed loop control mechanism specifically designed for the ink ribbon of an impact printer. The design includes a reservoir roller made from an ink absorbent material, which incorporates multiple channels fluidly connected to a pump and ink supply. A transfer roller, in contact with the reservoir roller, imparts ink to the print ribbon. A sensor plays a critical role by measuring the relative amount of ink on the print ribbon, enabling an electrical drive to adjust the pump flow accordingly. This setup allows for ink distribution across different segments of the ribbon, ensuring optimal performance. Additionally, a multi-viscosity ink feature compensates for changes in ambient temperature, making this invention adaptable to varying conditions.
Career Highlights
Y Grant Chang has established himself at Printronix, Inc., where he has dedicated his expertise toward developing cutting-edge printing solutions. His contributions have significantly influenced the design and functionality of printers, particularly in precision ink delivery systems. With a robust portfolio of six patents, Chang stands as a key figure in the advancement of printing technologies.
Collaborations
Throughout his career, Y Grant Chang has collaborated with notable colleagues such as Jeng-dung Jou and Norman E. Farb. Working alongside these innovative minds has allowed Chang to channel collective expertise into his projects, further driving the evolution of printing technology.
Conclusion
Y Grant Chang's contributions to the field of printing are marked by his innovative approaches and commitment to technological advancement. His latest patent, the Constant Density Printer System, exemplifies his ability to enhance printer performance through thoughtful engineering. As he continues to push the boundaries of invention at Printronix, Inc., the impact of his work will undoubtedly resonate within the industry for years to come.