Abstract: A curved surface printing method comprises a step of applying a printing ink to a raised portion of a letterpress printing original plate which is a planographic plate the raised portion of which is 0.1 to 50 ?m high, a step in which an elastic blanket (2) of rubber or rubberish material having a curved surface (221, 222, 21) of a predetermined shape formed on a convex or concave surface of an object (1) to be printed and set in the same polarity direction as that of the convex or concave surface of the object (1) is pressed to the letterpress printing original plate placed in a fixed position and coated with the printing ink, and the printing ink is transferred to the curved surface (221, 222, 21) of the predetermined shape, and a step of moving the elastic blanket (2) to which the printing ink is transferred and which has curved surface (221, 222, 21) of the predetermined shape, bringing the elastic blanket (2) into contact with the curved surface of the object (1), and thus printing the object.

Abstract: A fan includes a shaft, a hollow, approximately cylindrical rotor yoke that rotates around the shaft as a rotation axis and is open toward one of its axial ends, a rotor magnet secured to an inner circumference of the rotor yoke, and an impeller secured to an outer circumference of the rotor yoke and arranged to rotate together with the rotor yoke to generate an air flow. One of the impeller and the rotor yoke is provided with an index used for circumferentially positioning the impeller or the rotor yoke.

Abstract: A method for creating a print or coating image, characterized by including a first step of printing or coating a surface of a to-be-printed or to-be-coated product with a predetermined print or coating image using a mixture fluid in which predetermined powder has been mixed into printing ink or paint, a second step of pressure-treating and/or polishing at least the printed or coated print or coating image surface in predetermined conditions, and a third step of further plating the pressure-treated and/or polished print or coating image surface, or including a first step of printing or coating a surface of a to-be-printed or to-be-coated product with a predetermined print or coating using printing ink or paint, a second step of spraying the printed or coated surface with predetermined powder before the printed or coated surface is hardened, a third step of further pressure/compression-treating the print or coating image surface, a fourth step of drying and fixing the print or coating image surface, a fifth ste

Abstract: A servo control system for controlling position of a readout head such as a magnetic or optical head which records, reproduces or erases information on or from a magnetic or magneto-optical disk. This servo control system includes an actuator for moving the head toward a required position on the disk, a position detecting circuit for detecting a position of the head relative to the disk, and a signal processing circuit for processing an output signal from the position detecting circuit to provide a control signal to the actuator. When a value of the signal from the position detecting circuit falls within a preselected range, a controller deactivates a servo control operation of the signal processing circuit and modifies controlled parameters used in the servo control operation in response to a disturbance such as vibration of the system.

Abstract: In an optical memory apparatus wherein predetermined information is optically recorded on a recording medium along guide grooves previously formed and then played back; an optical memory apparatus wherein, using a tracking signal and a signal indicating the quantity of reflected light at the time at which a projected light beam passes through the guide grooves, the directions in which the light beam passes through the grooves and the number of the guide grooves to be passed are detected, a seek control is performed by adding and subtracting the numbers of the guide grooves to be passed, depending upon the directions of passage, and fine positioning is thereafter performed by the use of the tracking signal.