AKRON, Ohio--May 12, 2005-- Anyone who's made copies of a favorite recipe, a choice article, a Little League roster or a pile of receipts has Robert W. Gundlach to thank. Gundlach, who retired from Xerox Corporation in 1995, will be inducted into the National Inventors Hall of Fame here on Saturday for his inventions that resulted in the modern photocopier. His inventions not only helped revolutionize the workplace but also ultimately unlocked the basic workings of the process used in products that turn out millions of color and black-and-white copies and prints in homes, offices and print shops around the world. Gundlach, 78, is among six living inventors cited by the Hall of Fame for accomplishments "that have bettered our quality of life and allowed us greater convenience and safety." The Hall of Fame is giving posthumous recognition to eight additional inventors. "As one of the first research scientists hired by the Haloid Company, now known as Xerox Corporation, Gundlach was responsible for finding ways to refine and improve xerography," according to the Hall of Fame. "Through Gundlach's work, photocopying became a practical reality." Over his lifetime, Gundlach has received 164 U.S. patents, with 155 of those earned for his work at Xerox. He remains Xerox's most prolific inventor. His inventions included many of the technologies that enabled xerographic products such as copiers and printers to become so wildly successful. Gundlach joined the Haloid Company in 1952, about five years after the company had purchased the rights to commercialize xerography, Chester Carlson's invention. It would be seven more years before the first product would come to market. Among Gundlach's inventions are the "development electrode," which made it possible to copy solid areas; a method of cleaning the imaging drum that enabled Xerox for the first time to make plain-paper copiers that could fit on a desktop; and "tri-level highlight color," which was the basis for products that can copy both black and another color simultaneously. A gentle optimist who loves solving puzzles and understanding how things work, Gundlach continues to invent from his home near Rochester, N.Y. Most recently he has been working on a highly efficient heat pump that he believes can help alleviate global warming. The patented heat pump is designed for heating and cooling city homes on small lots using a fraction of the energy now required.