JP2006085877A - Magnetic head apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress wear of a magnetic head element and a magnetic tape to the minimum, while to improve selectivity and easiness for manufacturing and processing by negatively pressurizing a magnetic head periphery. <P>SOLUTION: This apparatus is provided with a tape slidable contact part 22 having a tape slidable contact plane 23 which is slidable contact with a running magnetic tape 2 over between a pair of tape reels 11 , 12 and curved and formed, an opening part 26 positioned at the tape slidable contact plane 23 and provided, and a magnetic head part 21 arranged opposing to the running magnetic tape 2, in the magnetic tape head part 21, the plane opposing to the magnetic tape 2 is formed as a flat plane, while arranged in the opening part 26 providing the prescribed gap for the tape slidable contact part 22. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a magnetic head device that records, reproduces, and erases information on a track of a flexible magnetic tape, and more particularly to a magnetic head device that improves the contact state between a magnetic head element and a magnetic tape.

  Conventionally, when recording or reproducing information on a magnetic tape using the linear recording magnetic head device 101, as shown in FIG. 11, the magnetic tape 102 supplied from the supply reel 103 has a plurality of magnetic tapes. Recording or reproduction is performed by contact with the magnetic head 110 via the guide pins 105 and 106, and winding is performed on the take-up reel 104 via the plurality of guide pins 107 and 108.

  A recording track on which a recording signal is magnetically recorded by the magnetic head device 110 is formed in the longitudinal direction of the magnetic tape 102. During reproduction, the reproducing magnetic head element is position-controlled (tracked) on the recording track and then reproduced. A signal is magnetically reproduced by the magnetic head element. Incidentally, in many linear recording type recording / reproducing apparatuses called the surpaint method, after the recording or reproduction is performed up to the end of the magnetic tape 102, the supply reel and the take-up reel are reversed, respectively. 102 runs in the reverse direction and performs recording or reproduction on another track.

  In general, the magnetic head device 110 used in the linear recording method reproduces the recorded information signal and checks the recording state immediately after recording the information signal on the magnetic tape 102. Therefore, as shown in FIG. 12, in the magnetic head device 110, a sliding contact surface 111 slidably contacting the magnetic tape 102 is formed, and in the case of the serpentine method, a recording magnetic head element is formed on the sliding contact surface 111. The reproducing magnetic head elements 113 and 114 are arranged on both sides of the recording medium 112, or the recording magnetic head elements 116 and 117 are arranged on both sides of the reproducing magnetic head element 115. It is set as the structure to arrange.

  Contact between the traveling magnetic tape 102 and the magnetic head device 110 is performed while maintaining a minute distance through the air film. This distance is called spacing and is usually about 30 nm to 100 nm. However, when this distance becomes large, there is a risk of causing deterioration in recording characteristics and reproduction characteristics called spacing loss during recording and reproduction. . In order to prevent this spacing loss, a negative pressure type magnetic head device that generates a negative pressure in the magnetic head element portion is known.

  As described in Japanese Patent Application Laid-Open No. 2000-207800, the negative pressure type magnetic head device is an integrated type in which a magnetic tape sliding contact portion having a cavity for generating a negative pressure and a magnetic head element are integrally formed. It was set as the structure (refer patent document 1).

  That is, as shown in FIG. 13, the negative pressure type magnetic head device 120 includes a recording magnetic head element 121 and reproducing magnetic head elements 122 and 123 arranged in the center, and these magnetic head elements 121, 122 and 123. Cavities 124 and 125 are provided before and after the magnetic tape 102 in the longitudinal direction.

  Such a negative pressure type magnetic head device 120 causes the magnetic tape 102 to move to the magnetic head elements 121 and 122 by the negative pressure generated when the air space between the traveling magnetic tape 102 and the magnetic head device 120 suddenly increases in the cavity. , 123 are attracted to the head surface 126 provided, and the spacing loss is reduced.

  However, in this negative pressure type magnetic head device, since the magnetic tape support part and the magnetic head element are integrated, the design, shape, processing, and process of the magnetic tape support part, cavity, and magnetic head element are considered. It was inevitable that big restrictions were added.

JP 2000-207800 A

  An object of the present invention is to form the magnetic head portion and the tape sliding contact portion separately, thereby improving the degree of freedom in material selection and manufacturing processing, and reducing the periphery of the magnetic head portion provided with the magnetic head element. An object of the present invention is to provide a magnetic head device that stably brings a magnetic head element and a magnetic tape into contact with each other while minimizing wear of the magnetic head element and the magnetic tape.

  To achieve this object, a magnetic head device according to the present invention includes a tape sliding contact portion having a tape sliding contact surface formed in a curved shape and slidingly contacting a magnetic tape traveling between a pair of tape reels, and a tape. An opening provided on the sliding contact surface, and a magnetic head portion disposed on the surface provided with the magnetic head element facing the traveling magnetic tape, the magnetic head portion facing the magnetic tape. The surface to be formed is formed as a flat surface, and is arranged in the opening with a predetermined gap from the tape sliding contact portion.

  Also, the magnetic head device according to the present invention is provided in a longitudinal direction of a magnetic tape that travels in both directions across a pair of tape reels, and is formed in a curved tape-sliding contact surface that is in sliding contact with the magnetic tape. First and second tape sliding contact portions, a first opening provided on a tape sliding contact surface of the first tape sliding contact portion, and a tape sliding portion of the second tape sliding contact portion. A second opening provided on the contact surface, and first and second magnetic head portions each having a surface on which the magnetic head element is provided, facing the traveling magnetic tape, The first magnetic head portion is formed as a flat surface facing the magnetic tape, and is disposed in the first opening with a predetermined gap from the first tape sliding contact portion. The magnetic head has a flat surface facing the magnetic tape. Together is made, it is arranged in a second in the opening provided second tape sliding portion with a predetermined gap therebetween.

  Furthermore, a magnetic head device according to the present invention includes a tape sliding contact portion having a curved tape sliding contact surface that is slidably contacted with a magnetic tape traveling in both directions across a pair of tape reels, and a tape sliding contact surface. The first and second openings provided side by side in the longitudinal direction of the magnetic tape, and the surfaces on which the magnetic head elements are provided, respectively, are arranged opposite to the traveling magnetic tape. And a first magnetic head portion is formed as a flat surface facing the magnetic tape, and has a predetermined gap between the tape sliding contact portion and the first opening portion. The second magnetic head portion is formed as a flat surface facing the magnetic tape, and is disposed in the second opening portion with a predetermined gap from the tape sliding contact portion.

  A magnetic head device according to the present invention includes a magnetic head portion arranged with a predetermined gap in an opening provided on a tape sliding contact surface of a tape sliding contact portion, and a tape slide formed curved. Due to the contact surface, negative pressure is generated between the magnetic tape and the magnetic head element, and the magnetic tape and the magnetic head element can be stably brought into contact with each other to improve the recording / reproducing characteristics. The tape sliding contact portion having a tape sliding contact surface formed in a curved manner and the magnetic head portion having a flat surface on which the magnetic head element is provided are separated from each other. It is possible to improve the selectivity of materials and the workability of production.

  A recording / reproducing apparatus using a magnetic head device to which the present invention is applied will be described below with reference to the drawings. As shown in FIG. 1, a recording / reproducing apparatus 10 using a magnetic head device 1 to which the present invention is applied is, for example, a drive apparatus that performs recording or reproduction on a magnetic tape wound around a tape cartridge. This is a recording / reproducing apparatus using a linear recording system that performs magnetic recording in the longitudinal direction of the magnetic tape.

  The recording / reproducing apparatus 10 includes a first tape reel 11 serving as a supply reel for supplying a magnetic tape 2 which is a long magnetic recording medium, and a take-up for winding up the magnetic tape supplied from the first tape reel. A second tape reel 12 serving as a reel, and a magnetic head device 1 that records or reproduces information with respect to the magnetic tape 2 that runs between the first tape reel 11 and the second tape reel 12. A plurality of guide pins 13 provided between the first tape reel 11 and the second tape reel 12 for applying a predetermined tension (tension) to the magnetic tape 2 so as to run in a desired direction R1. , 14, 15 and 16.

  In the recording / reproducing apparatus 10, when recording or reproducing a signal, a cassette containing the magnetic tape 2 is inserted into the recording / reproducing apparatus, and the first and second tape reels 11, 12 are driven to magnetically. The tape 2 is moved in the R1 direction shown in FIG. 1, and the magnetic head device 1 between the guide pins 14 and 15 disposed in the vicinity of the magnetic head device 1 is brought into sliding contact with the surface of the magnetic tape to provide magnetic information. Signal recording or reproduction is performed.

  A magnetic tape 2 used as a magnetic recording medium is wound around a tape cartridge and stored. The tape cartridge accommodates a tape reel on which a magnetic tape is wound in a cartridge body in which a pair of upper and lower halves are butted and joined.

  When this tape cartridge is inserted into the recording / reproducing apparatus 10, the magnetic tape 2 is pulled out by the tape drawing member of the recording / reproducing apparatus, and the first and second tape reels 11, 12 and guide pins of the recording / reproducing apparatus. It is wound around 13, 14, 15, 16 and travels in the R1 direction or the R2 direction.

  A recording track on which information signals are magnetically written on the magnetic tape 2 is formed in the longitudinal direction of the magnetic tape, and at the time of reproduction, the position of a reproducing head element of a magnetic head device described later is controlled on the recording track, that is, after tracking, The information signal is magnetically read by the reproducing head element.

  The recording / reproducing apparatus 10 employs a surpaint method, and once recording or reproduction is performed up to the end of the magnetic tape 2, the magnetic tape 2 is caused to travel in the reverse R2 direction. At this time, the functions of the first tape reel 11 and the second tape reel 12 are interchanged. That is, the recording / reproducing apparatus 10 causes the magnetic tape supplied from the second tape reel 12 as the supply reel to travel in the R2 direction so that the magnetic tape is wound around the first tape reel 11 as the take-up reel. Recording or reproduction is performed on a recording track different from the recording track recorded in the direction.

  Here, the magnetic head device 1 of the recording / reproducing apparatus described above will be described in detail.

  As shown in FIGS. 1 and 2, the magnetic head device 1 to which the present invention is applied travels between a pair of tape reels 11 and 12 on a surface 21a having a magnetic head element and provided with the magnetic head element. A magnetic head portion 21 disposed opposite to the magnetic tape 2 and a magnetic head portion 21 formed separately from the magnetic head portion 21 and curved so as to be in sliding contact with the magnetic tape 2 running between the pair of tape reels 11 and 12. And a tape sliding contact portion 22 having a tape sliding contact surface 23.

  The tape sliding contact portion 22 is formed of a material having good sliding characteristics and processing characteristics, for example, a metal such as aluminum or ceramic, with a tape sliding contact surface 23 that is in sliding contact with the magnetic tape 2 formed in a curved shape, that is, curved. Has been.

  For example, as shown in FIG. 3, the tape sliding contact portion 22 is formed as a part of a cylindrical shape. That is, the tape sliding contact portion 22 has a shape obtained by cutting a cylinder along two planes including the longitudinal direction of the cylinder, and a cross section orthogonal to the longitudinal direction has a substantially arc shape. The tape sliding contact portion 22 is formed so that the length in the longitudinal direction is larger than the width of the magnetic tape, and is arranged so that the above-described longitudinal direction is orthogonal to the longitudinal direction of the magnetic tape 2.

  The tape sliding contact portion 22 is provided with an opening 26 located on the tape sliding contact surface 23 that is in sliding contact with the magnetic tape 2. In the opening 26, the above-described magnetic head portion 21 is disposed with a predetermined gap from the tape sliding contact portion 22. This gap becomes a cavity for generating a negative pressure in the magnetic head unit 21.

  Here, the tape slidable contact portion 22 includes first and second slidable contact members 24 and 25 provided as a pair on both sides of the magnetic head portion 21 provided with the magnetic head element. Both the first and second sliding contact members 24 and 25 have a circular arc shape formed by cutting the above-described cylinder in the longitudinal direction, and the first and second sliding contact members 24 and 25 are arranged between the first and second sliding contact members 24 and 25. A groove that is a notch is formed as the opening 26.

  The first and second slidable contact members 24 and 25 forming the tape slidable contact portion 22 may have a curved shape formed by curving a portion in contact with the magnetic tape 2, and the cross section as described above. It is not limited to the arc shape. For example, it may be formed in a cross-sectional elliptical shape, or may be formed in a shape in which a cross-sectional arc shape or a cross-sectional elliptical shape is combined with a planar shape.

  The tape sliding contact portion 22 composed of the first and second sliding contact members 24 and 25 is disposed so as to protrude from a straight line connecting the tape guide pins 14 and 15 so that the tape sliding contact surface 23 is in sliding contact with the magnetic tape 2. Is done. Since the tape sliding contact portion 22 is disposed so as to protrude from the straight line connecting the tape guide pins 14 and 15, the tape sliding contact portion 22 is reliably slidably contacted with the traveling magnetic tape 2.

  That is, the tape slidable contact portion 22 has an angle between the magnetic tape 2 and the tape slidable contact portion 22 at the start point P1 and the end point P2 in contact with the magnetic tape 2 and the curved tangent line at the start point P1 and the end point P2. The angles are equal or larger.

  The magnetic head portion 21 is a flat slidable contact portion 27 (flat slider) formed flat at a position facing the magnetic tape 2 slidably contacting the tape slidable contact portion 22, that is, on the surface 21a on which the magnetic head element is provided. The flat sliding contact portion 27 is arranged in parallel with the traveling magnetic tape 2.

  The magnetic head portion 21 is formed as a separate member from the tape sliding contact portion 22 and is formed of a material advantageous for the head thin film process in addition to the sliding contact characteristics and processing characteristics, for example, a metal such as aluminum or ceramic. . The magnetic head portion 21 only needs to be formed as a separate member from the tape sliding contact portion 22 and may be formed from the same material or a different material. Here, when the magnetic head portion 21 and the tape sliding contact portion 22 are formed of different materials, the magnetic head portion 21 and the tape sliding contact portion 22 can be made of materials suitable for the sliding contact characteristics and processing characteristics according to the appropriateness of each. Therefore, it is advantageous in terms of material selectivity and workability.

  The magnetic head unit 21 is a magnetic head element 28 for recording magnetically with respect to the magnetic tape 2 and the magnetic tape 2 disposed on both sides of the magnetic head element 28 in the longitudinal direction of the magnetic tape. And reproducing magnetic head elements 29 and 30 for magnetic reproduction. By arranging the reproducing magnetic head elements 29 and 30 on both sides of the recording magnetic head element 28, immediately after the information signal is recorded on the magnetic tape 2, the recorded information signal is reproduced to check the recording state. In addition, it is possible to check the recording state even when the magnetic tape 2 travels in both directions R1 and R2 by the surpaint method.

  The magnetic head unit 21 may be configured to include a reproducing magnetic head element and recording magnetic head elements disposed on both sides of the reproducing magnetic head element in the longitudinal direction of the magnetic tape.

  The flat sliding contact portion 27 formed in a flat shape of the magnetic head portion 21 is made of a material having good sliding characteristics such as AlTiC or a ferrite material, for example. In the flat sliding contact portion 27, a recording or reproducing magnetic head element 28, 29, or 30 which is a head element for performing magnetic recording or reproducing is formed on a substrate having good sliding characteristics by a thin film process. . This thin film process is performed in the same manner as a general hard disk. After the thin film process is performed, the flat sliding portion 27 is formed in a flat shape by sandwiching the recording and reproducing magnetic head elements 28, 29, and 30 with the same material as the substrate as shown in FIG. Thus, the surface 21 a faces the traveling magnetic tape 2.

  A minute projection is provided on the surface of the magnetic head portion 21 on which the flat sliding contact portion 27 is provided. This protrusion makes good contact between the magnetic tape 2 and the flat sliding contact portion 27, that is, facilitates contact between the magnetic tape 2 and the recording or reproducing magnetic head elements 28, 29, 30. . This protrusion is formed in the same manner as the protrusion provided on a general hard disk.

  An air film is formed between the traveled magnetic tape 2 and the tape sliding contact portion 22 formed in a curved shape that is in sliding contact with the magnetic tape 2, and is in sliding contact with a minute distance. . This distance is called spacing, and is usually about 30 to 100 nm.

  The air film formed between the tape slidable contact portion 22 and the magnetic tape 2 is rapidly expanded at the opening 26, and a negative pressure is generated around the air film, that is, around the magnetic head portion 21. In other words, a pressure state lower than the surrounding environment is generated around the magnetic head portion that is the entire interface region. The magnetic tape 2 is sucked into the flat sliding contact portion 27 side where the magnetic head elements 28, 29, and 30 are formed by this negative pressure, and gives a stable contact to the flat sliding contact portion 27 with an appropriate contact, that is, stable. Can be brought into contact with the flat sliding contact portion 27. The magnetic tape 2 sucked into the flat slidable contact portion 27 side has a curved surface shape opposite to the portion slidably contacted with the tape slidable contact portion 22. Thus, the stability of the contact with the flat sliding contact portion 27 is increased by deforming the magnetic tape 2 into the curved surface shape in the opposite direction. The negative pressure is generated by the running of the magnetic tape 2 and the cavity. That is, the magnetic head portion 21 and the tape sliding contact portion 22 are fixed in the direction of rotation with respect to the magnetic tape 2.

  Further, the magnetic head unit 21 is moved to track the recording or reproducing magnetic head elements 28, 29, 30 so as to face the appropriate positions in the opening 26 of the tape sliding contact portion 22 during tracking (not shown). Driving means are provided. At this time, the tape sliding contact portion 22 is fixed. The magnetic head device 1 may be configured to move only the magnetic head unit 21 during tracking, and the drive means can be reduced in size and simplified. Note that the magnetic head portion 21 may be configured to move together with the tape sliding contact portion 22 during tracking.

  The magnetic head device 1 to which the present invention is applied includes a magnetic head unit 21 arranged with a predetermined gap in an opening 26 provided on the tape sliding contact surface 23 of the tape sliding contact unit 22; A negative pressure is generated between the magnetic tape 2 and the magnetic head elements 28, 29, and 30 by the curved tape-sliding contact surface 23, and the magnetic tape 2 and the magnetic head elements 28, 29, and 30 are Since the contact can be stably made with an appropriate strength, it is possible to improve the recording / reproducing characteristics and reduce the wear of the magnetic tape 2 and the magnetic head elements 28, 29, 30 and the like. By separating the tape sliding contact portion 22 having the tape sliding contact surface 23 formed in a curved manner from the magnetic head portion 21 having the flat surface 21a on which the magnetic head elements 28, 29, and 30 are provided. Of material択性, fabrication processability, making it possible to improve the degree of freedom of positioning of the attachment. In addition, the magnetic head device 1 to which the present invention is applied can reduce restrictions on the design, shape, processing, and process of the magnetic head portion 21 and the tape sliding contact portion 22.

  In the magnetic head device described above, the magnetic head unit 21 may be configured to have a drive mechanism that drives in a direction orthogonal to the traveling magnetic tape. A magnetic head device having a magnetic head unit movable in a direction orthogonal to the magnetic tape 2 is configured to move the magnetic head unit 21 away from the magnetic tape 2 by a driving mechanism when the traveling of the magnetic tape 2 stops. By moving the magnetic tape 2, the magnetic tape 2 and the magnetic head elements 28, 29, 30 are prevented from sticking when the magnetic tape 2 is stopped, and the magnetic tape 2 or the magnetic head elements 28, 29, 30 are prevented from being damaged. Can do.

  In the magnetic head device 1 described above, the start point P1 and the end point P2 at which the tape sliding contact portion 22 and the magnetic tape 2 contact each other are the ends of the tape sliding contact surface 23 formed in a curved shape as shown in FIG. However, the start point and the end point at which the tape sliding contact portion 22 and the magnetic tape 2 are in contact with each other may be in the middle of the curved surface, and where the curved tape sliding contact surface 23 is located is limited. Is not to be done.

  Next, as shown in FIG. 5, a magnetic head device 31 having a starting point and an ending point at which the tape sliding contact portion and the magnetic tape come into contact in the middle of the curved surface will be described. In the magnetic head device 31, portions common to the magnetic head device 1 are denoted by common reference numerals, and detailed description thereof is omitted.

  The magnetic head device 31 to which the present invention is applied is similar to the magnetic head device 1 in that the magnetic head device has a magnetic head element and travels on a surface 21 a provided with the magnetic head element between a pair of tape reels 11 and 12. A magnetic head portion 21 disposed opposite to the tape 2 and a magnetic head portion 21 formed separately from the magnetic head portion 21 and curved so as to be in sliding contact with the magnetic tape 2 running between the pair of tape reels 11 and 12. And a tape sliding contact portion 22 having a tape sliding contact surface 23.

  Similar to the magnetic head device 1, the magnetic head device 31 is arranged so that the tape sliding contact portion 22 protrudes beyond the straight line connecting the tape guide pins 14 and 15. In the magnetic head device 31, the positional relationship between the tape sliding contact portion 22 and the tape guide pins 11, 12 is larger than the magnetic head device 1 by the amount of protrusion by which the tape sliding contact portion 22 protrudes from the straight line connecting the tape guide pins 11, 12. Also reduced.

  As shown in FIG. 5, in the magnetic head device 31, the amount of protrusion that causes the tape sliding contact portion 22 to protrude beyond the straight line connecting the tape guide pins 11 and 12 is smaller than that of the magnetic head device 1. The contact starts or ends in the middle of the curved surface of the sliding contact portion 22. In the magnetic head device 31, the angle between the magnetic tape 2 and the tape sliding contact portion 22 is equal to the tangential line of the spherical surface at the start point P3 and the end point P4 at the start point P3 and the end point P4 that contact the magnetic tape 2 It is said to be a large angle.

  In the magnetic head device 31, at the start point P3 and the end point P4 where the tape sliding contact portion 22 comes into contact with the magnetic tape 2, the angle between the tape sliding contact surface 23 formed by bending with the magnetic tape 2 is a curved tangent. Therefore, the magnetic tape 2 can smoothly slide on the tape sliding contact surface 23 of the tape sliding contact portion 22.

  The magnetic head device 31 to which the present invention is applied is arranged with a predetermined gap in an opening 26 provided on the tape sliding contact surface 23 of the tape sliding contact portion 22, similarly to the magnetic head device 1. A negative pressure is generated between the magnetic tape 2 and the magnetic head element by the curved magnetic head portion 21 and the tape-sliding contact surface 23 formed to be curved, thereby stabilizing the magnetic tape 2 and the magnetic head element. Since it can be contacted with an appropriate strength, it is possible to improve the recording / reproducing characteristics, to reduce the wear of the magnetic tape 2 and the magnetic head element, etc., and to be curved. By separating the tape sliding contact portion 22 having the tape sliding contact surface 23 and the magnetic head portion 21 having a flat surface 21a on which the magnetic head element is provided, material selectivity, fabrication processability, and attachment Alignment It makes it possible to improve the degree of freedom of. In addition, the magnetic head device 31 to which the present invention is applied can reduce restrictions on the design, shape, processing, and process of the magnetic head portion 21 and the tape sliding contact portion 22.

  In the magnetic head device 1 described above, the magnetic head unit 21 is arranged in parallel with the magnetic tape 2. However, the magnetic head unit 21 is arranged so as to be inclined in a direction close to the tape supply side of the traveling magnetic tape. You may comprise.

  Next, as shown in FIG. 6, a magnetic head device 41 tilted in a direction approaching the tape supply side of the magnetic tape on which the magnetic head unit travels will be described. In the magnetic head device 41, portions common to the magnetic head device 1 are denoted by common reference numerals, and detailed description thereof is omitted.

  Similar to the magnetic head device 1, the magnetic head device 41 to which the present invention is applied has a magnetic head element and has a magnetic head that travels between a pair of tape reels 11 and 12 on a surface 21 a provided with the magnetic head element. A magnetic head portion 21 disposed opposite to the tape 2 and a magnetic head portion 21 formed separately from the magnetic head portion 21 and curved so as to be in sliding contact with the magnetic tape 2 running between the pair of tape reels 11 and 12. And a tape sliding contact portion 22 having a tape sliding contact surface 23.

In the magnetic head device 41, the magnetic head unit 21 has a flat sliding contact portion 27 provided at a position facing the magnetic tape 2 on the opening side of the tape sliding contact portion 23 on the tape supply side, that is, the magnetic tape 2 supply side. The magnetic head device 41 to which the present invention is applied is close to the end portion 24a of the tape sliding contact portion 23 on the tape supply side. By tilting in the direction, that is, in the direction approaching the tape supply side of the traveling magnetic tape 2, more reliable contact between the magnetic tape 2 and the magnetic head element provided in the magnetic head unit 21 is obtained. It is done.

  Further, the magnetic head device 41 to which the present invention is applied is provided with a predetermined gap in the opening 26 provided on the tape sliding contact surface 23 of the tape sliding contact portion 22, similarly to the magnetic head device 1. A negative pressure is generated between the magnetic tape 2 and the magnetic head element by the magnetic head portion 21 and the tape slidable contact surface 23 formed in a curved manner. Since the contact can be made stably and at an appropriate strength, it is possible to improve the recording / reproducing characteristics, to reduce the wear of the magnetic tape 2 and the magnetic head element, etc., and to be curved. By separating the tape slidable contact portion 22 having the tape slidable contact surface 23 and the magnetic head portion 21 having the flat surface 21a provided with the magnetic head element, the selectivity of the material and the workability of the production are obtained. , Mounting position Possible to improve the degree of freedom in conjunction with that. In addition, the magnetic head device 41 to which the present invention is applied can reduce restrictions on the design, shape, processing, and process of the magnetic head portion 21 and the tape sliding contact portion 22.

  Further, in the magnetic head device 41 described above, the flat slidable contact portion 27 of the magnetic head portion 21 is configured to be inclined so as to be close to the magnetic tape supply side, so that the magnetic tape device 2 in the predetermined direction R1 is formed. Although a reliable and stable contact can be obtained, a flat sliding contact portion 27 provided with a magnetic head element corresponding to the traveling direction of the magnetic tape 2 traveling in both directions R1 and R2 of the surpaint tin method is provided. However, a tilting means for tilting so as to be close to the supply side of the magnetic tape 2 may be provided.

  The magnetic head device provided with the tilting means is tilted so that the surface of the magnetic head portion on which the magnetic head element is provided is tilted so as to be close to the magnetic tape supply side, corresponding to the traveling direction of the magnetic tape. By changing, a reliable and stable contact between the magnetic tape traveling in both directions and the magnetic head element can be obtained in accordance with the surpaint method.

  In the magnetic head device described above, the flat sliding contact portion of the magnetic head portion is configured to change the tilt direction corresponding to the traveling direction of the magnetic tape. In order to cope with traveling, two tape sliding contact portions and two magnetic head portions may be provided.

  Next, a magnetic head device 51 shown in FIGS. 7 and 8 having two tape sliding contact portions and two magnetic head portions will be described. In the following description, portions common to the magnetic head device 1 described above are denoted by common reference numerals, and detailed description thereof is omitted. In addition, as shown in FIG. 7, the recording / reproducing apparatus 50 using the magnetic head device 51 applies a predetermined tension to the magnetic tape 2 to drive it in a desired direction. Except for the increase in the number of the recording heads and the configuration of the magnetic head device 51, the parts common to the recording / reproducing apparatus 10 described above are denoted by the same reference numerals. Detailed description will be omitted.

  As shown in FIGS. 7 and 8, the magnetic head device 51 to which the present invention is applied is provided side by side in the longitudinal direction of the magnetic tape 2 running in both directions across a pair of tape reels 11 and 12, respectively. The first and second tape sliding contact portions 52 and 53 having curved tape sliding contact surfaces 56 and 58 that are in sliding contact with the magnetic tape, and the surface on which the magnetic head element is provided, respectively And first and second magnetic head portions 54 and 55 disposed opposite to the tape.

  The first and second tape sliding contact portions 52 and 53 are each formed of the same member as the tape sliding contact portion 22 described above, and as shown in FIG. 8, the cross section perpendicular to the longitudinal direction is an arc shape. It is said that.

  The first tape sliding contact portion 52 is provided with a first opening 57 located on a tape sliding contact surface 56 that is in sliding contact with the magnetic tape 2. In the first opening 57, the above-described first magnetic head portion 54 is disposed with a predetermined gap from the first tape sliding contact portion 52. This gap becomes a cavity that generates a negative pressure in the first magnetic head portion 54.

  Further, the second tape sliding contact portion 53 is provided with a second opening 59 located on the tape sliding contact surface 58 that is in sliding contact with the magnetic tape 2. In the second opening 59, the above-described second magnetic head portion 55 is disposed with a predetermined gap from the second tape sliding contact portion 53. This gap becomes a cavity that generates a negative pressure in the second magnetic head portion 55.

  The first magnetic head portion 54 has a first flat sliding contact portion 60 formed in a flat shape at a position facing the magnetic tape 2 that is in sliding contact with the first tape sliding contact portion 52. The flat slidable contact portion 60 is inclined in the direction in which the end portion 52a of the first tape slidable contact portion 52 on the tape supply side approaches.

  Further, the second magnetic head portion 55 has a second flat sliding contact portion 61 formed in a flat shape at a position facing the magnetic tape 2 slidably contacting the second tape sliding contact portion 53. The two flat sliding contact portions 61 are disposed so as to be inclined in a direction in which the tape sliding contact portion 53b on the tape winding side approaches.

  The first and second flat sliding contact portions 60 and 61 are made of the same material as the flat sliding contact portion 27 described above. The first flat sliding contact portion 60 has a recording magnetic head in order from the side close to the end 52a of the tape sliding contact portion on the supply side of the magnetic tape 2 when the traveling direction of the magnetic tape 2 is the R1 direction. An element and a reproducing magnetic head element are provided. The second flat slidable contact portion 61 has a recording magnetic head in order from the side close to the end 53a of the tape slidable contact portion on the supply side of the magnetic tape 2 when the traveling direction of the magnetic tape 2 is the R2 direction. An element and a reproducing magnetic head element are provided.

  Here, the 1st and 2nd flat sliding contact parts 60 and 61 should just be inclined in the reverse direction of the longitudinal direction of the magnetic tape 2, and are not restricted to the above-mentioned thing.

  In the magnetic head device 51 to which the present invention is applied, the first and second flat sliding contact portions 60 and 61 of the first and second magnetic head portions 54 and 55 are inclined in opposite directions on one side in the running direction of the magnetic tape. Therefore, the magnetic tape and the magnetic head element traveling in both directions can be reliably and stably brought into contact with each other in accordance with the survivor inter-in method.

  Further, the magnetic head device 51 to which the present invention is applied has first and second openings provided on the tape sliding contact surfaces 56 and 58 of the first and second tape sliding contact portions 52 and 53. The magnetic tape 2 and the magnetic head are constituted by the first and second magnetic head portions 54 and 55 arranged with a predetermined gap in the portions 57 and 59 and the tape sliding contact surfaces 56 and 58 formed in a curved shape. A negative pressure is generated between the magnetic tape 2 and the magnetic tape 2 and the magnetic head element can be stably brought into contact with an appropriate strength, so that the recording / reproducing characteristics can be improved. First and second tape sliding contact portions 52, 53 having tape sliding contact surfaces 56, 58 formed to be curved, and the magnetic head element can reduce wear of the magnetic head element and the like. The first and second surfaces where the provided surface is flat By separating the magnetic head 54 and 55, it makes it possible to improve the selectivity of the material, production workability, the degree of freedom of positioning of the attachment. In addition, the magnetic head device 51 to which the present invention is applied is limited in design, shape, processing, and process of the first and second magnetic head portions 54 and 55 and the first and second tape sliding contact portions 52 and 53. Can be reduced.

  In the recording / reproducing apparatus 50 using this magnetic head device 51, when recording or reproducing a signal, a cassette containing the magnetic tape 2 is inserted into the recording / reproducing apparatus, and the first and second tape reels 11 are inserted. , 12 is driven to move the magnetic tape 2 in the R1 direction shown in FIG. 7, and the magnetic head portion between the guide pins 14 and 15 disposed close to the first tape sliding contact portion 52 of the magnetic head device 51 is provided. The information signal is magnetically recorded or reproduced by bringing 51 into sliding contact with the surface of the magnetic tape. On the other hand, in the recording / reproducing apparatus 50 using the magnetic head device 51, the first and second tape reels 11 and 12 are driven to run the magnetic tape 2 in the R2 direction shown in FIG. Information signals are recorded or reproduced magnetically by sliding the magnetic head portion 52 between the guide pins 17 and 18 disposed close to the second tape sliding contact portion 53 to the surface of the magnetic tape.

  In the magnetic head device 51 described above, the two tape sliding contact portions and the two magnetic heads are provided. However, in order to cope with the travel of the survivorine type magnetic tape in both directions, the tape sliding mechanism is used. You may comprise so that two openings may be provided in a contact part and two magnetic head parts may be provided.

  Next, a magnetic head device 71 shown in FIGS. 9 and 10 that includes two openings and two magnetic head portions provided in the tape sliding contact portion will be described. In the following description, portions common to the magnetic head device 1 described above are denoted by common reference numerals, and detailed description thereof is omitted. Further, in the recording / reproducing apparatus 70 using the magnetic head device 71, the same reference numerals are given to portions common to the above-described recording / reproducing apparatus 50, and detailed description thereof is omitted.

  As shown in FIGS. 9 and 10, a magnetic head device 71 to which the present invention is applied is a tape slide formed in a curved shape in sliding contact with a magnetic tape 2 that travels in both directions across a pair of tape reels 11 and 12. A tape sliding contact portion 72 having a contact surface, and first and second magnetic head portions 73 and 74 each having a surface on which a magnetic head element is provided facing the traveling magnetic tape are provided.

  The tape slidable contact portion 72 is formed of the same member as the tape slidable contact portion 22 described above, and the cross section orthogonal to the longitudinal direction has an arc shape as shown in FIG.

  The tape sliding contact portion 72 is provided with first and second openings 76 and 77 provided on the tape sliding contact surface 75 and arranged side by side in the longitudinal direction of the magnetic tape 2. In the first opening 76, the first magnetic head portion 73 described above is disposed with a predetermined gap from the tape sliding contact portion 72. This gap serves as a cavity for generating a negative pressure in the first magnetic head unit 73. In the second opening 77, the above-described second magnetic head portion 74 is disposed with a predetermined gap from the tape sliding contact portion 72. This gap serves as a cavity for generating a negative pressure in the second magnetic head unit 74.

  The first magnetic head portion 73 has a first flat sliding contact portion 78 formed in a flat shape at a position facing the magnetic tape 2 slidably contacting the tape sliding contact portion 72. The contact portion 78 is disposed so as to be inclined in the direction in which the end portion 72a of the tape sliding contact portion on the tape supply side in one tape running direction is close.

  Further, the second magnetic head portion 74 has a second flat sliding contact portion 79 formed in a flat shape at a position facing the magnetic tape 2 slidably contacting the tape sliding contact portion 72. The sliding contact portion 79 is disposed so as to be inclined in the direction in which the end 72d of the tape sliding contact portion on the tape supply side in the direction opposite to the one of the tape running directions is close.

  The first and second flat sliding contact portions 78 and 79 are made of the same material as the flat sliding contact portion 27 described above. The first flat sliding contact portion 78 includes a recording magnetic head element in order from the side close to the end 72a of the tape sliding contact portion on the magnetic tape supply side when the traveling direction of the magnetic tape 2 is the R1 direction. A reproducing magnetic head element is provided. The second flat sliding contact portion 79 has a recording magnetic head element in order from the side close to the end 72b of the tape sliding contact portion on the magnetic tape supply side when the preferred direction of the magnetic tape 2 is the R2 direction. And a reproducing magnetic head element.

  Here, the 1st and 2nd flat sliding contact parts 78 and 79 should just be inclined in the reverse direction of the longitudinal direction of the magnetic tape 2, and are not restricted to the above-mentioned thing.

  In the magnetic head device 71 to which the present invention is applied, the flat sliding contact portions 78 and 79 of the first and second magnetic head portions 73 and 74 are close to one side in the running direction of the magnetic tape 2 with a reverse inclination. Therefore, the magnetic tape traveling in both directions and the magnetic head element can be surely and stably contacted in correspondence with the surpaint tin method.

  The magnetic head device 71 to which the present invention is applied is arranged with a predetermined gap in the first and second openings 76 and 77 provided on the tape sliding contact surface 75 of the tape sliding contact 72. A negative pressure is generated between the magnetic tape 2 and the magnetic head element by the formed first and second magnetic head portions 73 and 74 and the tape sliding contact surface 75 formed in a curved shape, so that the magnetic tape 2 And the magnetic head element can be stably contacted with appropriate strength, so that the recording / reproducing characteristics can be improved, and the wear of the magnetic tape 2 and the magnetic head element can be reduced. In addition, the tape sliding contact portion 72 having the tape sliding contact surface 75 formed in a curved manner is separated from the first and second magnetic head portions 73 and 74 having a flat surface on which the magnetic head element is provided. Material selectivity, by Processability of the work, making it possible to improve the degree of freedom of positioning of the attachment. In addition, the magnetic head device 71 to which the present invention is applied can reduce the design, shape, processing, and process restrictions of the first and second magnetic head portions 73 and 74 and the tape sliding contact portion 72. .

It is a top view which shows the outline of the recording / reproducing apparatus using the magnetic head apparatus to which this invention is applied. It is sectional drawing which shows the example of the magnetic head apparatus to which this invention is applied. It is a perspective view of the tape sliding contact part of the magnetic head apparatus to which this invention is applied. It is a top view of the magnetic head part of the magnetic head apparatus to which this invention is applied. It is sectional drawing which shows the other example of the magnetic head apparatus to which this invention is applied. It is sectional drawing which shows the example which the flat sliding contact part of the magnetic head apparatus to which this invention is applied inclined. It is a top view which shows the outline of the recording / reproducing apparatus using the magnetic head apparatus which has a magnetic head part and two tape sliding contact parts. It is sectional drawing which shows the example which has two magnetic head parts and tape sliding contact parts of the magnetic head apparatus to which this invention is applied. It is a top view which shows the outline of the recording / reproducing apparatus using the magnetic head apparatus by which the magnetic head part was each provided in the opening part of two places provided in the tape sliding contact part. It is sectional drawing which shows the example in which the magnetic head part was each provided in the opening part of two places provided in the tape sliding contact part of the magnetic head apparatus to which this invention is applied. It is a top view which shows the outline of the recording / reproducing apparatus using the conventional magnetic head apparatus. It is sectional drawing of the conventional magnetic head apparatus. It is sectional drawing of the conventional magnetic head apparatus which provided the sliding contact part for generating a negative pressure.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Magnetic head apparatus, 10 Recording / reproducing apparatus, 11 1st tape reel, 12 2nd tape reel, 13, 14, 15, 16 Guide pin, 21 Magnetic head part, 22 Tape sliding contact part, 23 Tape sliding contact surface 24 first sliding contact member, 25 second sliding contact member, 26 opening, 27 flat sliding contact portion, 28 recording magnetic head element, 29, 30 reproducing magnetic head element

Claims (15)

A tape sliding contact portion having a curved tape sliding contact surface that is slidably contacted with a magnetic tape running between a pair of tape reels;
An opening provided on the tape sliding contact surface;
A magnetic head part provided with a magnetic head element disposed on the surface provided with the magnetic head element facing the traveling magnetic tape;
The magnetic head device is a magnetic head device in which a surface facing the magnetic tape is formed as a flat surface and a predetermined gap is provided between the tape sliding contact portion and the opening.   2. The magnetic head device according to claim 1, wherein the magnetic head portion and the tape sliding contact portion are formed of different materials.   2. The magnetic head device according to claim 1, wherein the tape sliding contact portion is provided as a pair on both sides of the magnetic head portion. The pair of tape sliding contact portions has a pair of tape guide pins for holding the magnetic tape so that the magnetic tape is not separated from the tape sliding contact portion when the magnetic tape is slidably contacted,
4. The magnetic head device according to claim 3, wherein the pair of tape sliding contact portions are arranged so as to protrude from a straight line connecting the pair of tape guide pins.   4. The magnetism according to claim 3, wherein the pair of tape sliding contact portions has a cross section formed in an arc shape, and a length in a longitudinal direction orthogonal to the cross section is formed larger than a width of the magnetic tape. Head device.   2. The magnetic head device according to claim 1, wherein the magnetic head portion is inclined so that a surface on which the magnetic head element is provided is close to a supply side of the magnetic tape. The magnetic tape runs in both directions across the pair of tape reels,
2. The magnetic head device according to claim 1, wherein the magnetic head unit is inclined so that a surface on which the magnetic head element is provided is close to a supply side of the magnetic tape, corresponding to a traveling direction of the magnetic tape.   The magnetic head unit includes a magnetic head element for recording magnetically on the magnetic tape on the flat surface facing the magnetic tape, and a longitudinal direction of the magnetic tape of the magnetic head element for recording. 2. A magnetic head device according to claim 1, further comprising a reproducing magnetic head element which is disposed on both sides and reproduces magnetically with respect to the magnetic tape.   The magnetic head unit has a reproducing magnetic head element that magnetically reproduces the magnetic tape on the flat surface facing the magnetic tape, and a longitudinal direction of the magnetic tape of the reproducing magnetic head element. 2. The magnetic head device according to claim 1, further comprising: a recording magnetic head element disposed on both sides for magnetic recording on the magnetic tape.   2. The magnetic head device according to claim 1, wherein minute irregularities are formed on the flat surface of the magnetic head portion so as to be in sliding contact with the traveling magnetic tape.   2. The magnetic head device according to claim 1, wherein the tape sliding contact portion and the magnetic head portion move together with the movement of the magnetic head element during tracking. The magnetic head part moves together with the movement of the magnetic head element during tracking,
2. The magnetic head device according to claim 1, wherein the tape sliding contact portion is fixed during tracking. The magnetic head is movable in a direction perpendicular to the magnetic tape;
2. The magnetic head device according to claim 1, wherein when the traveling of the magnetic tape is stopped, the magnetic head is moved in a direction away from the magnetic tape. A first tape slide and a second tape slide which are provided side by side in the longitudinal direction of a magnetic tape running in both directions across a pair of tape reels and each have a curved tape sliding contact surface which slides into contact with the magnetic tape. The tangent,
A first opening provided on the tape sliding contact surface of the first tape sliding contact portion;
A second opening provided on the tape sliding contact surface of the second tape sliding contact portion;
First and second magnetic head portions each having a surface on which a magnetic head element is provided are arranged opposite to the traveling magnetic tape,
The first magnetic head portion is formed as a flat surface facing the magnetic tape, and is disposed in the first opening with a predetermined gap from the first tape sliding contact portion. ,
The second magnetic head portion is formed as a flat surface facing the magnetic tape, and is disposed in the second opening with a predetermined gap from the second tape sliding contact portion. Magnetic head device. A tape sliding contact portion having a curved tape sliding contact surface formed in sliding contact with a magnetic tape traveling in both directions across a pair of tape reels;
First and second openings provided on the tape sliding contact surface and arranged side by side in the longitudinal direction of the magnetic tape;
First and second magnetic head portions each having a surface on which a magnetic head element is provided are arranged opposite to the traveling magnetic tape,
The first magnetic head portion is formed as a flat surface facing the magnetic tape, and is disposed in the first opening with a predetermined gap from the tape sliding contact portion,
The second magnetic head portion is formed as a flat surface facing the magnetic tape, and is provided in the second opening portion with a predetermined gap from the tape sliding contact portion. apparatus.

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