Dr. Holub began doing business as Imagicolor in 1994 with a goal of leveraging nearly 12 years of industry experience (see Corporate, below) to develop products that simplified and automated aspects of color management. This entailed integrating color measurement and calibration into device intelligence and providing a framework for communicating information critical to accurate color reproduction at multiple network nodes and an intuitive GUI for oversight and collaboration. An early prototype demonstrated proof-of-concept and inspired subsequent industry developments. By 2003, his business had become one dedicated primarily to  licensing with the entry of the first patent licensing agreement. In 2005, RAH Color Technologies LLC was formed in anticipation of the second significant licensing agreement. Since then, an additional 28 companies have entered agreements of varying scope, the majority amicably.


Dr. Holub joined Eikonix Corporation in 1983 at the time that a beta installation of the first digital electronic prepress system based on device independent colorimetric principles was placed. He quickly became involved in the color aspects of the product development, eventually assuming principal responsibility for them. Eikonix was acquired by Kodak in 1985. In 1990, he joined the CompuGraphic division of Agfa Corp. to recruit a team and grow in-house expertise in color as applied to prepress and publishing. In 1993, he took a position at SuperMac Technologies to further integrated color product development there, a process that was disrupted by the merger with Radius. Thereafter, he left to start up a new business.


Beginning in the summer of 1968 he began work on a bachelor’s thesis on aspects of visual adaptation. This continued through a Master’s Thesis at Brown University. His Doctoral thesis in Neurophysiology at the University of Wisconsin – Madison was a quantitative study of information processing in mammalian visual cortex. He did post-doctoral work on retinal physiology at the National Institutes of Health and Boston University where he later served as Assistant Research Professor of Physiology and Adjunct Assistant Professor of Computer Engineering, modelling aspects of natural and artificial vision. In graduate school and thereafter he taught undergraduate, graduate and medical students. Subsequently, he taught Statistics and Research Methods to Masters students in the College of Imaging Arts and Sciences at Rochester Institute of Technology.

For the Industry

Dr. Holub served on the Committee for Graphic Arts Technical Standards in the early ’90’s. Thereafter, he served on the Board of Directors of the Technical Association of the Graphic Arts from 1994 to 2003 (ten years). For nine of those years, he was an officer, holding voluntary, elective positions from Vice President, Technical Papers (and Program Chair) for three years and Executive VP, President and Immediate Past President, each for two-year terms. He published frequently in technical journals and conference proceedings between 1985 and 2000, when his first patent issued. Thirty-six U. S. patents have been published between 2000 and 2020.