Abstract: The present disclosure generally relates to a magnetic recording device having a magnetic recording media guide support system with a load-unload mechanism. The magnetic recording media guide is positioned between the magnetic head assembly and at least one guide roller, and moves a magnetic recording media surface closer to and further from the magnetic head assembly. The magnetic recording media guide is movable in a direction perpendicular to a direction that the magnetic recording media moves past the magnetic head assembly. The magnetic recording media guide is stationary in relation to the magnetic recording media when the magnetic recording media moves past the magnetic head assembly while a magnetic head is positioned to read data from or write data to the magnetic recording media. Additionally, the magnetic recording media guide can planarize the magnetic recording media surface on the magnetic head.

Abstract: Embodiments of the present invention help to reduce damage of a head element portion or a magnetic disk in a procedure for specifying a heater power value for adjusting a clearance between the head element portion and the magnetic disk. In an embodiment of the present invention, an HDC/MPU sequentially performs data writing and reading while increasing heater power. The HDC/MPU further determines whether or not a head slider has retrieved the data properly. When the data cannot be retrieved properly, the HDC/MPU specifies a heater power value in a normal operation based on the heater power value at which the data could not be retrieved properly.

Abstract: Embodiments of the present invention allow for a precise altitude to be calculated from read-out signals of a head slider. In one embodiment, a hard disk controller/multiprocessing unit (HDC/MPU) determines a head element portion in which the instability has occurred in accordance with the resolution change. The HDC/MPU adjusts the clearance accordingly. The head element portion reads signals of different frequencies under a condition of the signal strengths coinciding with a reference value, and the HDC/MPU calculates the resolution. The HDC/MPU determines that the instability has occurred if the difference is outside the criterion. The HDC/MPU uses the read-out signal of a head slider in which the instability has not occurred to calculate the altitude.

Abstract: Embodiments of the present invention efficiently conduct a test for detecting defects on a magnetic disk more accurately. According to one embodiment, a HDD carries out defect inspection of a magnetic disk using thermal fly height control (TFC). Changing a clearance by the TFC achieves defect inspection tests under varied test conditions without much decrease of throughput in manufacturing HDDs. First, a self analysis test (SAT) is carried out in a state that a heater power of P2 is supplied to a heater. Then, another SAT is carried out in a state that a heater power of P1 is supplied to the heater. The heater power P2 is larger than the heater power P1.

Abstract: Embodiments of the present invention help to reduce damage of a head element portion or a magnetic disk in a procedure for specifying a heater power value for adjusting a clearance between the head element portion and the magnetic disk. In an embodiment of the present invention, an HDC/MPU sequentially performs data writing and reading while increasing heater power. The HDC/MPU further determines whether or not a head slider has retrieved the data properly. When the data cannot be retrieved properly, the HDC/MPU specifies a heater power value in a normal operation based on the heater power value at which the data could not be retrieved properly.

Abstract: Embodiments of the present invention allow for a precise altitude to be calculated from read-out signals of a head slider. In one embodiment, a hard disk controller/multiprocessing unit (HDC/MPU) determines a head element portion in which the instability has occurred in accordance with the resolution change. The HDC/MPU adjusts the clearance accordingly. The head element portion reads signals of different frequencies under a condition of the signal strengths coinciding with a reference value, and the HDC/MPU calculates the resolution. The HDC/MPU determines that the instability has occurred if the difference is outside the criterion. The HDC/MPU uses the read-out signal of a head slider in which the instability has not occurred to calculate the altitude.

Abstract: Embodiments of the present invention efficiently conduct a test for detecting defects on a magnetic disk more accurately. According to one embodiment, a HDD carries out defect inspection of a magnetic disk using thermal fly height control (TFC). Changing a clearance by the TFC achieves defect inspection tests under varied test conditions without much decrease of throughput in manufacturing HDDs. First, a self analysis test (SAT) is carried out in a state that a heater power of P2 is supplied to a heater. Then, another SAT is carried out in a state that a heater power of P1 is supplied to the heater. The heater power P2 is larger than the heater power P1.

Abstract: Temperature sensors are produced by first producing temperature sensing elements each having electrodes on its mutually oppositely facing main surfaces, next forming a lead frame comprising a linearly elongated base part and a plurality of pairs of planar lead parts extending perpendicularly from said base part, twisting each of these planar lead parts such that each of the pairs has top end parts which face each other with a gap therebetween, inserting one of the temperature sensing elements between the mutually facing top end parts of each pair in the corresponding gap and electrically connecting the electrodes on the inserted temperature sensing element individually to the top end parts of the corresponding pair, and cutting each of the planar lead parts from said base part to form lead terminals of specified lengths for the temperature sensors.

Abstract: Temperature sensors are produced by first producing temperature sensing elements each having electrodes on its mutually oppositely facing main surfaces, next forming a lead frame comprising a linearly elongated base part and a plurality of pairs of planar lead parts extending perpendicularly from said base part, twisting each of these planar lead parts such that each of the pairs has top end parts which face each other with a gap therebetween, inserting one of the temperature sensing elements between the mutually facing top end parts of each pair in the corresponding gap and electrically connecting the electrodes on the inserted temperature sensing element individually to the top end parts of the corresponding pair, and cutting each of the planar lead parts from said base part to form lead terminals of specified lengths for the temperature sensors.

Abstract: A temperature sensor has lead lines made of an elastic material each attached to a corresponding one of electrodes on a temperature sensing element such as an NTC thermistor element. The lead lines may each have a non-straight part where they are bent or deformed into a semi-circular shape such that, when these lead lines are inserted into throughholes prepared through a circuit board, the non-straight parts are hooked at the throughholes and the portions of the lead lines above the circuit board will stand up obliquely. Instead of lead lines, a pair of elongated planar lead terminals each with a twisted top end part may be connected to the electrodes such that the top end parts of the pair of lead terminals face each other and can support the temperature sensing element more securely in between.

Abstract: An electronics packaging system (1) including a printer (3), a placing unit (4) and a reflow unit (5), wherein a printed wiring board (2) is carried while being kept in an upright position. The printed wiring board (2) has solder printed on all the lands thereof at the same time, the electronic parts (10) are all placed on the lands at the same time, and the electronic parts (10) are all soldered to the lands at the same time. Thus, the system (1) can be designed more compact, and the electronic parts packaged in a shorter time.

Abstract: A temperature sensing device for use in a secondary battery pack includes an NTC element and a current limiter element. The NTC element is disposed at a predetermined position to sense the temperature of a secondary battery incorporated in the secondary battery pack, and one end thereof is electrically connected to a temperature sensing terminal. The current limiter element is connected between the other end of the NTC element and a reference potential terminal.

Abstract: In an electronics packaging system (1) including a printer (3), placing unit (4) and reflow unit (5), a printed wiring board (2) is carried while being kept in upright position. The printed wiring board (2) has solder printed on lands thereof at the same time, electronic parts (10) placed on the lands at the same time, and the electronic parts (10) solder to the lands at the same time. Thus, the system (1) can be designed more compact, and package electronic parts in a shorter time.

Abstract: A temperature sensing device for use in a secondary battery pack includes an NTC element and a current limiter element. The NTC element is disposed at a predetermined position to sense the temperature of a secondary battery incorporated in the secondary battery pack, and one end thereof is electrically connected to a temperature sensing terminal. The current limiter element is connected between the other end of the NTC element and a reference potential terminal.

Abstract: A magnetic disk unit is provided with a storage device for storing a signal output value in each position on a first circumference of a magnetic disk, and a contact detector for relating a signal output value in each position on a second circumference of the magnetic head slider to each position on the first circumference. The latter signal output values are standardized by dividing by the corresponding signal output value stored in the storage device. Contact between the magnetic disk and the magnetic head slider is detected if the standardized output exceeds a preset reference value. The contact detector outputs a signal for instructing an actuator control circuit to move the magnetic head slider to a predetermined home position if contact between the magnetic disk and the magnetic head slider is detected.

Abstract: An electronic component includes a main element such as a thermistor having electrodes formed on its surfaces, and lead terminals are electrically connected to these electrodes. A resin coating covers the main element, and both the main element and the lead terminals, except their tip parts away from the main element, are covered with another resin coating of an electrically insulating and flexible resin material.

Abstract: An NTC thermistor element has a pair of outer electrodes formed on opposite outer end surfaces of a thermistor body made of an NTC thermistor material. A plurality of inner electrodes are formed inside this thermistor body in layers, each connected to either of this pair of outer electrodes. At least one of these layers contains a longer inner electrode and a shorter inner electrode disposed mutually opposite to each other, separated by a gap, and connected to different ones of this pair of outer electrodes. At least a portion of this longer electrode in this layer overlaps, in the perpendicular direction to the layers, another of the inner electrodes connected to the different outer electrode from the one to which this longer electrode is connected, with a thermistor layer in between.

Abstract: A head pad having a drawing face which draws a flexible disk used for an electronic still camera, for example, by negative pressure and which is made so that the head, which moves along the radial direction of the disk so as to record or reproduce data on the disk, projects out on the drawing face, wherein said depressions are formed in the drawing face around the head and corner portions of the bottom faces of the depressions are further cut away to form undercut portions, thus facilitating generation of a greater negative pressure between the disk and the pad drawing face and enabling greater improvement of the head touch and enabling greater stabilization of the drawing force of the disk by the pad.

Abstract: A cassette tape player is provided with a casing defining a compartment for receiving a cassette and including a hollow, box-like structure extending only partly across the casing to confront a corresponding portion of a long side of the cassette housing in the compartment, a battery receptacle extending longitudinally from the hollow, box-like structure across substantially the remainder of the casing for receiving at least one elongated cylindrical battery with the longitudinal axis of the latter extending parallel with the long side of the cassette housing in the compartment, and a closure engageable with the battery receptacle for retaining and locating said at least one battery in the receptacle and being configured to define, with the receptacle, a box-like extension of the hollow box-like structure which cooperates with the latter to define a substantially continuous surface for locating the cassette housing in the compartment.

Abstract: A mechanism for use in a cassette tape recorder automatically changes the mode of the recorder when the end of the tape is reached by sensing the cessation of rotation of the pinch roller. A mode change lever having an elongated hole with converging sides that receives a cylindrical portion of the pinch roller is biased by a spring so that the cylindrical portion engages the converging sides and the mode-change lever tends to rotate in a first direction. Once the pinch roller ceases to rotate, the mode-change lever is moved in a direction opposite the first direction and so that it cooperates with a mode-change drive assembly rotated by the capstan. The mode-change lever is then displaced and releases a mode key, so that the mode of the recorder is changed and is typically shut off.