Abstract: A helical scan magnetic recording/reproducing apparatus incorporating an MR head to serve as a reproducing magnetic head is arranged to convert data which is recorded on a magnetic tape into data in the form of DC-free code trains. The magnetic recording/reproducing apparatus is provided with a high-pass filter for attenuating low-frequency components of a reproduced signal detected by the MR head. Moreover, a demodulating circuit is provided which demodulates data in a state before data is converted into the DC-free code trains from the reproduced signal, in which the low-frequency components have been attenuated by said high-pass filter. As a result, noise (thermal asperities) in a low-frequency region caused when the magnetic tape and the MR head are brought into contact with each other is removed so that a reproduced output free from excessive noise is obtained. The high-pass filter is, for example, a rotary transformer mounted on rotational drum.

Abstract: A magnetic signal reproducing apparatus which can lessen fluctuation of reproduced outputs in reproducing magnetic signals recorded in a magnetic tape by a magneto-resistance effect type magnetic head even if a magnetic tape sliding face of the magneto-resistance effect type magnetic head is abraded. A current value of a sense current when a voltage fluctuation level of the sense current caused when a magnetic field in the normal direction is applied to a magneto-resistance effect element of the magneto-resistance effect type magnetic head is equal with a voltage fluctuation level of the sense current caused when a magnetic field in the opposite direction is applied thereto is set to a predetermined value I0. Then, the current value of the sense current supplied to the magneto-resistance effect element of the magneto-resistance effect type magnetic head is set to be greater than I0 in reproducing the magnetic signals recorded in the magnetic tape.

Abstract: A rotary magnetic head apparatus which can be formed into a smaller size is provided in a case in which signals of a plurality of recording tracks which are recorded on a tape-like information recording medium are reproduced by using a plurality of reproduction heads without depending on the arrangement of the recording tracks in the information recording medium.

Abstract: A magnetic recording/reproducing apparatus of the helical scan system employing a MR head as a reproducing magnetic head. The magnetic recording/reproducing apparatus includes a MR head 6 and a rotary drum carrying the MR head 6. In reproducing signals from the magnetic tape 7 in accordance with the helical scan system, a magnetic tape 7, having a large number of projections 7c on the tape surface and containing an electrically conductive material in its magnetic layer, is used as a recording medium.

Abstract: There are provided a rolling machine and a rolling method in which the strip crown and shape control capability for a narrow-width strip is improved, so that the adequate strip crown and shape control capability for strips of various widths from a narrow width to a larger width can be secured. In the rolling machine, a pair of upper and lower working rolls are supported respectively by a pair of upper and lower intermediate rolls, and the intermediate rolls are supported respectively by a pair of upper and lower reinforcing rolls. The reinforcing rolls have an effective barrel length which is smaller than an effective barrel length of the working rolls and the intermediate rolls, and is larger than a width of a minimum-width strip to be rolled. The intermediate rolls are arranged in such a manner that their axes, disposed respectively in substantially horizontal planes, cross each other, and are crossed relative to the working rolls and the reinforcing rolls.

Abstract: A rolling mill is provided with a pair of work rolls 2, a pair of intermediate rolls 3 and a pair of backup rolls 4 in a mill stand 5, wherein the pair of backup rolls are arranged so that their axial lines cross perpendicularly a plate travelling direction and do not incline to the direction in a horizontal plane, the intermediate rolls and work rolls are arranged so that the axial lines of the intermediate rolls and the axial line of the work rolls incline to (cross) the axes of the backup rolls in a counter direction to each other in a horizontal plane, and a lubricant supplying apparatus 6 is provided for supplying a lubricant to the roll surfaces.

Abstract: A disk reproducing apparatus capable of improving the feeding accuracy of a pickup, reducing the cost of a feeding portion of the pickup, and realizing a small-sized skew adjustment mechanism at low cost, wherein the disk producing apparatus comprises: a disk driving unit for rotating a disk; a pickup having a first guide portion provided on one side portion and a guide face provided on the other side portion; a base member having a guide member for receiving the guide face, the guide member having a length shorter than the sliding distance of the pickup in the guiding direction; a driving unit for driving the pickup in the radial direction of the disk; and a signal processing unit for applying a specified processing to a signal reproduced from the pickup. Preferably, the first guide portion comprises: a guide shaft supported on the base; and a guide bearing provided on the one side portion of the pickup in such a manner as to be slidably inserted around the guide shaft.

Abstract: A sheet handling apparatus receives a plurality of sheets discharged by a discharge roller pair from an image recording apparatus on a first support member disposed below the discharge roller pair to form a stack of the sheets on the first support member and carries out handling on the stack of sheets. A second support member is supported to be movable back and forth between a projecting position where it is projected over the first support member and is able to support a rear end portion of a sheet discharged by the discharge roller pair with a front end portion of the sheet supported by the first support member and a retracted position where it is retracted from the first support member. A controller controls movement of the second support member.

Abstract: Sliding noise characteristics can be considerably improved without degrading electromagnetic conversion characteristics and abrasion resistance characteristics in a recording/reproducing operation. A depth (H) of a contact width regulating groove (21) is set to be smaller than a contact width (W) of a magnetic recording medium sliding surface (a), and is set to a predetermined value of 25 .mu.m or more and 45 .mu.m or less. A depth (H) of the contact regulating groove is set to a predetermined value of 37.+-.12 .mu.m, the contact width (W) on the magnetic recording medium sliding surface (a) is set to a predetermined value of 55.+-.6 .mu.m, and a value (R) of a corner portion of the contact width regulating groove is set to a predetermined value of 16 .mu.m or less.

Abstract: A push lock switch having a lock mechanism for use as a hazard switch or a rear defogger switch on an instrument panel of an automobile. The switch has first and second stationary members assembled together which define a space into which a movable member is slidably fitted. A push button fits over the movable member. A coil spring is mounted between the movable member and the first stationary member. The coil spring has first and second compression parts in a one piece construction with each other and urges the movable member toward the push button. A movable contacting strap is fixed to the movable member. The movable contacting member includes movable contacts and a retainer. The movable contacts slide into or out of contact with fixed contacts on the second stationary member when the movable member is pushed by the push button. The first stationary member has a bottom wall in which a recess is formed and on which a plurality of ribs are formed on the recess.

Abstract: A color correction system and method for correcting three kinds of color gradation input data, each having an m bit length, to produce three kinds of corrected color gradation data, each having an m bits length, by a combination of looking-up in a look-up table to find the closest color gradation corrected data and carrying out an interpolation to obtain improved color reproducibility.

Abstract: In step S1, the capacity of the area (remaining quantity) of a disk in which information can be recorded is read, and the remaining quantity is displayed in step S2. After a user inputs the recording time of information to be recorded and the recording capacity w for the recording, an average transmission rate R.sub.1 is calculated from expression R.sub.1 =w/t-.alpha. in step S4. The rate .alpha. is the transmission rate for transmitting signals other than a video signal, such as an audio signal, attached to the video signal. Data obtained by applying a DCT treatment to the video data is quantized with a quantization width corresponding to the average transmission rate R.sub.1 and this data is intermittently recorded on the disk.

Abstract: A disk apparatus of zone-recording type having a plurality of recording zones is structured such that a plurality of reference clock signals, each corresponding to a recording zone, are generated in both a recording mode and a reproducing mode. A reference frequency signal means, for generating an oscillating signal of a reference frequency, is combined with a variable frequency forming phase locked circuit. A first switch selectively causes the phase locked circuit to perform the phase locking in response to the reference frequency signal generated from the reference signal means or the reproducing signal. A demultiplying means switches a demultiplying ratio according to the mode.

Abstract: A head drum for a recording and/or reproducing apparatus is provided. The head drum includes a rotary drum, a stationary drum, and a plurality of magnetic heads for recording and/or reproducing signals on a magnetic tape. A chamber is provided which includes a first circumferentially extending recessed portion formed on the rotary drum and a second circumferentially extending recessed portion formed in the stationary drum. A plurality of grooves are formed in a surface of the rotary drum which communicates between the chamber and the exterior of the head drum. In a first embodiment, the second recessed portion is eccentrically arranged to extend closer to a first position on an exterior surface of the head drum where the magnetic tape starts to wrap about the head drum than at a second position on said exterior surface. In an alternative embodiment, the second circular recessed portion has a greater depth from the first circular recessed portion at the first position than at the second position.

Abstract: An image recording apparatus which is disclosed herein includes a containing section for containing an image recording material which is wound in a rolled form and a body in which the image recording material is utilized for recording an image.

Abstract: A drive for a recording disk includes a drive motor and a head transport mounted on a chassis which has a coefficient of expansion equal to that of the disk to reduce tracking errors caused by differential expansion of the chassis and the disk due to environmental changes.

Abstract: An electrical connector includes a male assembly and a female assembly matingly receiving the male assembly. Each of the male and female assemblies includes a protective member biased to normally cover the corresponding one of the male-side and female-side electrical terminals. When the male assembly is inserted into the female assembly, the male member pushes the female-side protective member into the housing of the female assembly against the biasing action imparted to the protective member. When the protective member of the male assembly is fully inserted into the housing, it is stopped by a shoulder provided in the housing. As the male assembly is further inserted into the female-side housing, it engages the inside surface of the housing. In that case, both the terminals of the male and female assemblies are exposed from the corresponding protective members and electrically engaged with each other.