Company Filing History:
Years Active: 1998-2000
Title: Thomas A. Hanna: Innovator in Copy Prevention Technology
Introduction
Thomas A. Hanna is a notable inventor based in South Pasadena, California. He has made significant contributions to the field of xerographic printing technology. With a total of 3 patents, his work focuses on methods that enhance the security and quality of printed materials.
Latest Patents
One of his latest patents is a copy prevention method. This innovative system produces non-copyable prints using a xerographic printer. In this method, text is printed with clear toner, creating a unique optical difference between the toner and non-toner portions of the page based on reflectivity. The plastic toner reflects more light than the paper, allowing a human reader to perceive the image by adjusting the angle of the page. However, a copier scanner is designed to avoid reflected light, which prevents it from detecting the difference and thus, cannot replicate the original print. Another significant patent is for an auxiliary processor that creates simulated photographic prints. This process involves bonding a transparent carrier with a xerographically formed mirror image to a plastic substrate using heat and pressure, resulting in high-quality finished prints.
Career Highlights
Thomas A. Hanna is currently employed at Xerox Corporation, a leading company in the field of printing and imaging technology. His work at Xerox has allowed him to develop and refine his innovative ideas, contributing to advancements in the industry.
Collaborations
Throughout his career, Thomas has collaborated with notable colleagues, including Stephen T. Chai and Leland D. Green. These collaborations have further enriched his work and led to the development of groundbreaking technologies.
Conclusion
Thomas A. Hanna's contributions to xerographic printing technology demonstrate his innovative spirit and commitment to enhancing print security. His patents reflect a deep understanding of the challenges in the industry and offer practical solutions that continue to influence the field.