Canon, Inc. engages in the development, manufacture and sale of office multifunction devices, copying machines, printers, cameras and lithography equipment. The company is headquartered in Ota-Ku, Tokyo-To and currently employs 170,340 full-time employees. The firm consists of four business segments. The Printing Business Unit segment provides digital continuous ledger printers and digital cut sheet printers. The Medical Business Unit segment provides diagnostic ultrasound systems and X-ray systems. The Imaging Business Unit segment is engaged in the provision of interchangeable lens digital cameras, interchangeable lenses, and compact digital cameras. The Industrial Business Unit segment is engaged in the provision of semiconductor lithography equipment. The firm also provides handy terminals and document scanners.