An optical recording art is characterized by converting a light from a light source into a modulated light including an amplitude-modulated light and a phase-modulated light and forming an image of the modulated light on a surface of an object. The drive transmitting device comprises a rack formed on the output member, and pinions disposed in operative association with the motor and in meshing engagement with the rack. The field controller comprises a processor module segment through which it can control a selected number of devices, and it may also include one or more expansion module segments to enable it to control a larger number of controlled devices. The apparatus further includes an imaging device disposed upstream of the closure point for generating an image of the at least two different components.