Abstract: An electrophotographic printer which is equipped with a photoreceptor, a charge device, an optical head, a developing device and a transfer device. The optical head has an array of electroluminescent devices arranged along one edge of a substrate and an array of light waveguide strips for transmitting the light from each of the electroluminescent devices to the other edge of the substrate which is to be brought into a face-to-face relationship with the photoreceptor.

Abstract: A joystick controller of the electrically non-contact type is provided with a pair of magnetosensitive elements having a magnetresistive effect. The magnetosensitive elements are placed fixedly on a stator member in a given relation at right angles to detect the rotary motion of a permanent magnet embedded in a rotor member movably supported by the stator member. Each of the magnetosensitive elements is supplied by a constant bias magnetic field generated by added magnets on the stator member to improve the sensing characteristics of the controller. In addition, a spring sheet member is assembled between surfaces of the rotor and stator members to afford appropriate feeling and handling for operation of the lever.