JPS6337844A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To improve a winding accuracy by performing the direction change in a cylinder outlet port by a piece of roller with high accuracy, winding a magnetic tape in a counterclockwise direction for the changing roller after a voice control head and the slope post for inclination change and reducing the fixing part winding angle thereof. CONSTITUTION:A cylinder 10 is provided by inclining it so that the intersection A of a 1st plane which is almost vertical for the tape width direction at the outlet port side of the cylinder 10 and which passes about the center of the tape width direction and a vertical 2nd plane passing about the center in the tape width direction of the winding reel 13a side and being about parallel to a main chassis 12 may be located in the space with a capstan 14. A voice control head 17 is installed on the 1st plane at the outlet port side of the cylinder 10, the changing roller 18 to change the tape pass from the 1st plane to the 2nd plane and a change inclination post 19 are installed on the intersection A of the 1st, 2nd planes of the downstream side of the voice control head 17, and the displacement of a head azimuth dislocation, etc., is surely prevented to improve the reliability.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a magnetic recording and reproducing apparatus such as a helical scan type video tape recorder (VTR).

(Prior Art) Recently, in order to promote downsizing and weight reduction in this type of VTR, the diameter of the cylinder on which the magnetic tape is mounted has been reduced to 2/3 of that of the conventional one. On the other hand, there is a method in which the magnetic tape is wound approximately 270 inches and placed on a rack, and four video heads record sequentially. Due to its special characteristics, when a conventional tape bus system with a 180° winding method is adopted, there is a risk that the magnetic tape may be undone during loading and unloading, and various other problems may occur.

For example, JP-A-59-79453. Japanese Patent Publication No. 59-794
55. Japanese Patent Publication No. 59-217262.11i1 1986-1
8846 has a method that is well designed.

However, in all of the above methods, there is a problem with the output side of the cylinder. Due to the configuration of Fm, which is a tape path system that converts the tape path to be approximately parallel to 1ilfi before reaching the 3-voice control\do, each insertion has its own drawbacks.

The first point is that it is necessary to correct the tape height on the exit side of the cylinder before reaching the audio control head, and therefore it is necessary to install a conversion inclined post and an inclined boss 1 on the exit side of the cylinder. Therefore, it is not possible to effectively improve the size.

The second point is that the inclined boss 1~ provided after the conversion inclined post at the cylinder exit is wound clockwise, so that the magnetic tape is pulled out from the cassette during loading, so the cassette escapes. shape of 1l11
Since the angle of inclination cannot be increased due to the ladle, the angle of winding becomes larger and the tape tensicon rises, causing damage to the tape during high-speed playback and high-speed rewind playback. Moreover, phenomena such as demagnetization occur even during normal tape running. This phenomenon is particularly noticeable when book tape is used, and therefore, the large angle at which the fixed portion is wrapped is a major drawback.

The third point is that the tape rises rapidly on the exit side of the cylinder, which may cause damage to the tape during loading and unloading.

The fourth point is that the voice control head must perform avoidance operations during loading and unloading, which may cause positional deviations such as head azimuth angle deviations.

(Problems to be Solved by the Invention) This invention was made in order to solve the problems that the above-mentioned winding method has poor precision and may damage the magnetic tape, and that miniaturization cannot be effectively achieved. With a simple configuration,
It is an object of the present invention to provide a magnetic recording/reproducing device which can realize an improvement in size and also improves winding precision.

[Structure of the invention] (Means for solving the problem) These 5! The TFL % tape is pulled out from the power station 1 and mounted on a cylinder. The first plane passing approximately at the center and the second plane, which is substantially parallel to the base and passing approximately at the center in the tape width direction on the take-up reel side, are so arranged that there is one line between the cylinder and the cab stan. the audio control head is installed on the first plane at the outlet 11111 of the cylinder to the audio controller 1]
- a conversion roller and a conversion tilt post for converting the tape bus from the first plane to the second plane are installed on the intersection line of the first plane and the second plane on the downstream side of the tape head; It is something to do.

(effect) Above! Depending on the configuration, the fixed part d of the voice control head can be set as 11, and the direction change at the cylinder exit can be performed by one row, and the direction change can be performed by one row, and the n city control head can be changed from 1 to 1. The conversion roller and the 1'fi i' for oblique conversion are 1.1 and 1.1 (H tape is wound in the opposite 11 and 1 diagonal direction, and the fixed part can be wrapped by reducing the angle. , the intended purpose has been achieved.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows the main parts of a magnetic recording/reproducing apparatus according to an example of this actual flow, and numeral 10 in the figure is a cylinder. This cylinder 10 has a first plane that is substantially perpendicular to the tape width direction of the magnetic tape 11 on the exit side and passes through the center of the tape width direction, and a first plane that is substantially parallel to the main chassis 12 and runs in the tape width direction on the take-up reel 13a side. The main chassis 12 is inclined and installed corresponding to the cassette 15 so that the intersection IA with the second plane passing through the approximate center of the cylinder is located between the main chassis 12 and the cab stan 14. An impedance roller 1G is installed at 12. The audio controller 1 to the roll head 17 are installed on the first plane t on the exit side of the cylinder 10,
There is a tape bus on the downstream side of this audio control head 17 for 4 yen! A conversion roller 18 for converting from one plane to a second plane and one conversion tilt post are installed at a predetermined interval on the approximate intersection line A of the first plane and the second plane (second plane).
(see figure). Among these, the conversion roller 18 is installed on the first plane of the main chassis 12, and the Ikekata conversion inclined post 19 is installed on the main chassis 12 at a predetermined angle of inclination.

Further, on the inlet side of the cylinder 10, an erasing head 20 is rotatably disposed via a avoidance t1 mechanism (not shown), and on the outlet side, the pinch roller 21 is movably moved toward and away from the cab stun. will be placed. On the inlet side of the cylinder 10, there is a supply side slider 24 on which a guide roller 22 and an inclined guide 23 which are interlocked with a loading [44 (not shown)] are mounted, and a first insertion hole of the cassette 15 in which a tension post 25 is accommodated. First and second scraping side slider cassettes t-28 are disposed corresponding to the slider cassettes 15a and have guide rollers 26 and 27 mounted on their exit sides.
, 29, and the guide post 30 is disposed corresponding to the third insertion hole 15b of the cassette 15.
5c.

Note that 13b in the figure is a supply reel for the cassette 15.

In the above configuration, first, when the cassette 15 is accommodated, the first to third insertion holes 15a to 1 of the cassette 15 are inserted.
Tension boss 25 on 5c. Roller guide 22 and inclined guide 23 of supply side slider 24. Each roller guide 26 and 27 of the first and second winding side sliders 28 and 29. A cab stan 14 and a guide post 30 are each housed therein. When the loading mechanism (not shown) is driven, first the two second take-up sliders start moving, and after a slight delay, the supply side slider 22 and the first valley-cutting slider 28 start moving almost simultaneously. The pinch row 521 is rotated and the magnetic tape 1 is moved from the position indicated by the line v4 in FIG. 1 to the position indicated by the line χ.
1, the tension post 25 and the guide post 30 are rotated.

At this time, the erasing head 20 located on the tape path moves once;
After an avoidance operation is performed by +s (not shown), the magnetic tape 11 is brought into contact with the magnetic tape 11, and loading is completed here.

In addition, the loaded magnetic tape 11 has the following characteristics: 0-7 Ink UN! M (illustrated t!91 reversal history U), the supply side slider 24. Tension Pos l-
25. Erasing head 20. First and second winding side sliders 28 and 29. Pinch roller 21, guide boss 30
are unloaded and stored in the cassette 11 by performing an operation substantially opposite to the above-mentioned loading operation and returning to the original stop position shown by the dashed line in FIG. , I will spare you the detailed explanation here.

In this way, the recording IA production device described above has the cylinder 10 approximately in the tape width direction on its exit side. f! A line of intersection between the first plane and the second plane, which is perpendicular to the main chassis 12 and passes through approximately the center of the pick-up reel 13a side in the tape width direction. A is provided so as to be inclined so that it is located between the carburetor stun 14, and the first
An audio control head 17 is installed on a plane, and a tape bus is transferred from the first plane to the second plane on the intersection iA of the first plane and the second plane on the downstream side of the audio control head 17. Since a conversion roller 18 and one conversion tilted post are installed to convert the f
improvement in ail is realized. Moreover, according to this, the rise of the magnetic tape 11 on the exit side of the cylinder 10 is gradual, and the direction can be changed with high accuracy using a single guide roller 16, so that the size can be reduced as much as possible, and the conversion By applying the tape to the roller 18 and the conversion inclined post 19 in a counterclockwise direction, the post 19
Since the ivl bevel angle can be set large, the chromaticity of the tape attachment is small and the loss of Eft (111) is avoided.
1! A professional and fearless l! +! ! Jj-like tape pass becomes possible.

Note that this invention is not limited to the above embodiments, but also includes
It goes without saying that various modifications can be made without departing from the spirit of the invention.

[Effects of the Invention] As described in detail above, according to the present invention, it is possible to achieve an improvement in compactness with a simple configuration, and in addition, it is possible to realize an improvement in the accuracy of winding, so that the magnetic It is possible to provide a recording/reproduction gt position.

[Brief explanation of the drawing]

FIG. 1 is a structural explanatory diagram showing the main parts of a recording/reproducing apparatus according to an embodiment of the present invention, and FIG. 2 is a detailed diagram showing the state of the tape path on the exit side of the cylinder in FIG. 1. 10...Cylinder, 11...T6K tape, 12.
...Main chassis, 13a...Take-up reel, 13
b... Supply reel, 14... Cab stan, 15.
・Kasetsu 1~. 15a to 15c...first to third
Insertion hole, 16... Impedance roller, 17...
・Voice control head, 18... Conversion roller, 1
9... Conversion tilt guide, 20... Erasing head, 21
...Pinch roller, 22...Roller guide, 23.
・Inclination guided, 24 ・Supply slider, 25 ・・
・Tension post, 26.27... O-ra guide,
28.29...first and second winding slider, 30.
··Guidepost.

Claims (1)

[Claims] In a magnetic recording and reproducing device in which a magnetic tape wound in a cassette is pulled out and mounted on a cylinder, the cylinder is connected to a magnetic tape extending approximately perpendicular to the tape width direction on the exit side and passing through approximately the center of the width direction. the first plane and a second plane that is substantially parallel to the substrate and passes through the approximate center of the tape width direction on the take-up reel side; A voice control head is installed on the first plane on the outlet side of the cylinder, and the first plane on the downstream side of the voice control head is
A magnetic recording/reproducing apparatus characterized in that a converting roller and a converting inclined post are installed substantially on the intersection line of the plane of FIG. 1 and the second plane of FIG.