JPS61956A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To obtain a magnetic recording and reproducing device which reduces an occupied space and runs a tape efficiently, by allowing fixed guides to take charge of conversion of the running direction of the magnetic tape and allowing an erasing head to take partial charge of it also. CONSTITUTION:A tape 100 and wound around a reel 51 reaches an erasing head 57 and is wound around a cylinder 61 and passes a fixed recording head 64 and reaches a reel 52. The running direction of the tape 100 is converted by oblique winding of the tape 100 around a guide post 56, the reasing head 57, and guide post 58. The winding angle of the tapem 100 the erasing head 57 is used especially to attain a required tape direction conversion quantity, thereby reducing the total of winding angles of the tape 100 to fixed guides. Since the erasing head 57 is used for direction conversion of the tape 100, the monopolized space required for tape running is reduced to make a VTR small-sized and thin.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a helical scan type magnetic recording and reproducing device (hereinafter referred to as VTR) that records and reproduces signals by winding a magnetic tape diagonally around a cylinder at a predetermined angle. It is related to.

[Technical background of the invention]

A comparison of tape passes between conventional V'l'RK and tape loading methods is described in Japanese Patent Laid-Open No. 57-212651. Among the above tape loading methods, Fig. 3 shows the FiM loading method, and Fig. 4 shows the U method.
The loading method is shown in FIG. 5, and the loading method is shown in FIG. Here, in FIGS. 3 to 5, the symbol 1.9.19tj cylinder is replaced by the symbol 2.3, addition, 27F
The i tilt guide is 4.16, the erasing head is 5.11.25 is the capstan shaft, and 6.12 is the erasing head.
26 indicates a pinch roller, 7.17 indicates a supply reel, 8.18.29 indicates a take-up reel, 10 indicates a fixed guide r, and 13.14.15 indicates a guide r. The reference numeral 21 indicates the U-turn guy P, the reference numeral 22 indicates the fixed guy P on the entrance side, and the reference numeral 21 indicates the fixed guy P on the exit side.

In the M loading method shown in Fig. 1, a fixed inclined guide ￥2
．． The tape 100 is wound diagonally around the tape 3 to change the running direction of the tape. In the M loading method shown in FIG. 2, the tape 100 coming out of the cylinder 9 is wound perpendicularly around a fixed guide 10 that stands perpendicular to the image on a certain inclined surface, and then a guide 13. The tape 100 is returned to the reel surface (substrate surface) via steps 14 and 15. In the μ loading method shown in FIG. 3, the tape 100 is wound obliquely around a fixed inclined guide r20, 27 to change the direction of tape running.

[Problems with background technology]

In any of the conventional tape loading methods described above, a fixed guide P (including an inclined guide) 2 is used to change the direction of the tape by a certain amount during tape running.
．． 3.10. The tape 100 must be wrapped diagonally around 27. Moreover, since there are fixed guides 13, 14, 15, 22, and erase heads 4, 16, 23, etc. that wrap the tape 100 at right angles to the axis, the total wrapping angle of the tape with respect to each guide is If it is large, the tape tension will increase by the time the tape 100 reaches the capstan shaft 5.11, the drive of the capstan shaft 5.11.25), and the tape 100 will have to increase. There was a risk that it would have an adverse effect on Furthermore, Te°
- Since the conversion of the required amount for the tape 100 is carried out only with the inclined fixed guide, there is a limit to reducing the exclusive space for tape running, including the arrangement of other fixed guides r1, erasing head r, etc. However, the conventional tape loading method has been a bottleneck in making VTRs thinner and smaller.

[Purpose of the invention]

SUMMARY OF THE INVENTION In view of the above drawbacks, an object of the present invention is to provide a magnetic recording and reproducing apparatus that is space-saving and that can efficiently run a tape without adversely affecting the tape.

[Summary of the invention]

The present invention provides a helical scan type magnetic recording and reproducing device that records and reproduces signals by winding a magnetic tape diagonally around a cylinder at a predetermined angle. The above object is achieved by having the receiver take over the load, and by having the erase head also share the work.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an embodiment of a tape loading system of a magnetic recording/reproducing apparatus according to the present invention.

The cassette 50 has reels 51 and 52 built-in, and the reel 51
The tape 100 wound on the first guide Ist 5
3. Tenshi Engen Arm Guy P54, 2nd Guide Bost 5
5. Pass through the third guide post to reach the erase head 57. Furthermore, this tape 100Fi guide post) 58.
59 and the fourth guy P post ω and wraps around the cylinder 61. 100 pieces of tape wrapped around cylinder 61) 62,631. It passes through the fixed recording head 64 and the fifth guide post 65 and reaches the capstan shaft 66 and pinch roller 670 portion. Furthermore, tape 1ooFi chir? It passes through the string 69 and reaches the reel 52 of the cassette 50.

FIG. 2 is a partially enlarged view of FIG. 1 above. The board 70 is mounted horizontally with the cassette (materials) shown in FIG. Seal, Tenshi Sein Arm Gai) '541. ff ithos)62,63゜68,6
9. The fixed recording spatula 1' 64, the capstan shaft θ, the pinch roller 67, etc. are arranged vertically. tape 1oo
IIi These guys P1 are wound at right angles to the axial direction of the heads. On a first inclined surface 71 inclined at a predetermined angle with respect to the substrate 70, a cylinder 61 having a one-rotation head (not shown) is erected perpendicularly to the surface. Similarly, on the second inclined surface 72 which is inclined at a predetermined angle with respect to the substrate 70, a fourth guide post θ is provided with a guide post θ perpendicular to the surface and a guide post frame inclined to the surface.

The magnetic tape 100 is wound perpendicularly to the guide post ω, 59, and is wound obliquely to the guide post 58. A third plate inclined at a predetermined angle with respect to the substrate 70
A third guide post 56 and an erasing head 57 are provided perpendicularly to the inclined surface 73 of the magnetic tape 1o.
oFi 3rd Guy)''/Strike 56 and Erase Hera r57tc
It is wrapped diagonally. In addition, in Fig. 1, there are 154 guide posts, guide posts 5
9.62* 63, pinch day-ra 67, guy r post 6
It is configured to be able to swing when forming an 8Fi tape path.

According to this embodiment, the running direction of the tape 100 is determined by winding the tape 100 diagonally around the third guide r post 56, the erasing spatula y 57, and the guide post 58. In particular, the tape 100 is wound diagonally around the third guide r post 56, the erasing spatula y 57, and the guide post 58. By utilizing the 1000 wrap angle, the total amount of the tape wrap angle of 1000 with respect to the fixed guy P can be reduced by the configuration that obtains the necessary amount of tape direction change.

Therefore, the tape tension and the cazostan driving torque can be reduced, and therefore damage to the tape 100 can be reduced. Further, since the erasing spatula R57 is used to change the direction of the tape 100, the dedicated space required for running the tape can be reduced by that amount, and the VTR can be made smaller and thinner.

〔Effect of the invention〕

As described above, according to the magnetic recording and reproducing apparatus of the present invention,
In order to obtain the necessary amount of tape direction conversion, an erasing head is used to reduce the total wrapping angle of 1000 tapes around the fixed guide r, resulting in an efficient system that saves space and does not adversely affect the tape. This has the effect of obtaining tape running.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an embodiment of the tape loading method 2 of the magnetic recording/reproducing apparatus of the present invention, FIG. 2 is a partially enlarged view of FIG. 1, and FIG. 3 is a diagram showing the conventional M loading method. ,
FIG. 4 is a diagram showing a conventional U loading method, and FIG. 5 is a diagram showing a conventional μ loading method. 50...Cassette 51.52- Reel 53.-
First guide post 55...Second guide post
56...Third guide post 57-fi Husband P
ω...Fourth guide post 61...Cylinder even--Fixed record/Hera y 65...Fifth guide post 0...Substrate 71, 72.73...Slanted surface agent Patent attorney Shi Nori Chika Kensuke Figure 1 ζq Figure 3 Figure 5Ii1 Figure 4

Claims (1)

[Claims] 1) A helical scan type magnetic recording and reproducing device that records and reproduces signals by winding a magnetic tape diagonally around a cylinder at a predetermined angle, including a plurality of guide posts that change the running direction of the magnetic tape. , a magnetic recording device comprising an erasing head installed obliquely with respect to a substrate on which a cassette wound with magnetic tape is horizontally installed, and the erasing head changes the running direction of the magnetic tape. playback device. 2) A cylinder is provided with three types of inclined surfaces each having a different direction and angle of inclination with respect to the substrate on which the reel stand is held vertically and the cassette is mounted horizontally, and a rotating head is provided perpendicularly to the first inclined surface. a first guide post is provided perpendicular to the second inclined surface, a second guide post and the erasing head are provided perpendicular to the third inclined surface, and third, fourth, and third guide posts are provided perpendicular to the substrate. The magnetic recording and reproducing device according to claim 1, further comprising a fifth guide post, a fixed recording head, and a capstan shaft, and further comprising a plurality of tape guides that can swing when forming a tape path. Device.