Abstract: A position detecting apparatus is provided with a detecting face so as to detect the positions of points specified on the detection face thereof, which is capable of the detection of the minute position with a detection resolution for the whole detection face being not made finer, because the detection resolution of the region in one portion of the detection face is made finer than the detection resolution of the whole detection face, whereby highly advanced manufacturing art is not required as compared with a case where the detection resolution of the whole detection face has been made finer, thus resulting in lower cost.

Abstract: A magneto-optical disk having a magnetic layer and a conductive layer laminated on a transparent substrate, and having a lubricant layer provided on the conductive layer. Recording and reproduction on and from the magneto-optical disk are performed by a flying head. The flying head glides above and lands on the lubricant layer. The magneto-optical disk can therefore be removed from the device easily since a magnetic head does not adhere to a recording medium. Further, a depressing force exerted on the flying head is controlled so as to maintain a constant floating gap between the flying head and the recording medium. The depressing force is controlled by electrostatic capacity between an electrode, provided on a bottom face of the flying head, and the conductive layer. Consequently, highly reliable recordings can be made since a magnetic field intensity applied to the magnetic layer becomes constant.

Abstract: In an electrophotographic apparatus according to the present invention, carrier is gradually supplied to a developing device and a developer is gradually discharged from the developing device through a developer discharge opening. The upper body of a copying machine is free to move upward round a supporting point. The developer discharge opening is formed in a portion of the developing device remotest from the supporting point. This arrangement prevents the developer from spilling from the developer discharge opening when the upper body of the copying machine is opened. Moreover, the developer discharge opening is provided with a shutter device which closes the developer discharge opening (1) when opening the upper body of the copying machine, (2) when removing the developing device from the copying machine, (3) when removing a waste container from the developing device, or (4) for a predetermined period during a copying operation.

Abstract: The control device is characterized by including a linear encoder for storing two pieces of information on two phases about a printing position in one storing part located on a longitudinal axis of the linear encoder, reading means for reading the pieces of information on two phases stored in the storing part of the linear encoder, and control circuits for controlling a printing position based on the informations on two phases read by the reading means.

Abstract: A surface of a magneto-optical recording medium of the present invention is textured with fine and physical protrusions and recessions. The shapes of physical protrusions and recessions vary at each radial locations on the medium such that, for example, rough protrusions and recessions are formed in inner parts of the recording medium and fine protrusions and recessions are formed in outer parts thereof. Therefore, floating force given to a floating head from the medium being rotated based on the constant angular velocity method through an air layer in the outer parts equals floating force in the inner parts. Consequently, since the floating height of the floating head becomes constant irrespective of radial locations on the medium, information can be recorded under constant recording conditions, permitting the accuracy of the recording to improve.

Abstract: The production of a solid-state imaging device includes the steps of: smoothing the surface of a semiconductor substrate by embedding a polymeric or polymerizable material into recessed portions in the surface of the substrate on which a plurality of solid-state imaging devices are formed, forming optical component parts on the substrate, and cutting the substrate along scribe lines that constitute part of the recessed portions.