Company Filing History:
Years Active: 1978-1987
Title: The Innovations of Hans Keller
Introduction
Hans Keller is a notable inventor based in Kiel, Germany. He has made significant contributions to the field of color correction and printing technology. With a total of four patents to his name, Keller's work has advanced the methods used in polychromatic mixed printing.
Latest Patents
Keller's latest patents include a method and circuit arrangement for selective correction of hues. This invention focuses on the production of color separations for polychromatic mixed printing. It involves deriving hue signals, color saturation signals, and luminance signals from scanned color value signals. These signals are limited to selectable regions, allowing for precise color corrections. Another significant patent relates to the production of printing blocks or forms. This invention utilizes optoelectronic scanning to obtain image signals, which are then mixed to generate a composite signal. The control signal used in this process is derived from the color information of a colored control mask.
Career Highlights
Keller has worked at Dr. Ing. Rudolf Hell GmbH, a company known for its innovations in printing technology. His expertise in color correction and printing processes has positioned him as a key figure in the industry.
Collaborations
Keller has collaborated with notable coworkers such as Roman Koll and Heinz Taudt. Their combined efforts have contributed to the advancements in the technologies they have developed.
Conclusion
Hans Keller's contributions to the field of printing technology and color correction are noteworthy. His innovative patents reflect his dedication to improving the processes involved in polychromatic mixed printing.