Canon and its subsidiaries are engaged in the manufacture and sale of office machines, cameras, and optical equipment and others. Co.'s principal products are office imaging products including digital multifunctional machines, copying machines, laser facsimiles; laser beam printers, inkjet printers, facsimile machines, and scanner; business information equipment; digital cameras, silver halide cameras, digital video cameras, and interchangeable lenses; and semiconductor production equipment, mirror projection mask aligners for LCD panels, TV lenses for broadcasting stations, ophthalmic instruments, X-ray equipment, and medical image recording equipment.