Photocopier a convergence in some high-end machines between the roles of a photocopier, a fax machine, a scanner, and a computer network-connected printer into a multi-function printer. Lower-end machines that can copy and print in color have increasingly dominated the home-office market as their prices fell steadily through 2017. Higher-end color photocopiers capable of handling heavy duty cycles and large-format printing remain a costlier specialty for print and design shops. Chester Carlson, the inventor of photocopying, was originally a patent attorney, as well as a part-time researcher and inventor. His job at the patent office in New York required him to
N. S. B. Gras N. S. B. Gras N. S. B. Gras (1884–1956) was a Canadian professor at the Harvard Business School who invented the academic discipline of Business History. Gras was born in 1884 in Toronto, Ontario. He graduated from the University of Western Ontario. He went on to receive a PhD in Economics from Harvard University. Gras taught Economics at the University of Minnesota. Gras was appointed as Professor of Business History by Dean Wallace Brett Donham in 1927. He invented this new academic discipline, which only existed as his job title at the time. From the outset, Gras made sure to