JPH11259936A - Recording and reproducing device and tape cassette - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the azimuth effect of a tape without severely conducting the adjustment control of the vertical precision of a fixed guide, to prevent the occurrence of a tape damage, the positional deviation of the tape at the time of recording/reproducing and step wise winding by arranging the fixed guide which has a low friction coefficient against the tape and is not rotatable, on a cassette housing as a supply guide on the entrance side of a rotating drum. SOLUTION: The tape path height of a tape T which is taken out from a self-aligning guide 8, is controlled by a wing guide 10 being a tape control guide on the exit side of a rotating drum device 5. Then, the tape T is pressed and tape-driven to a capstan 11 and a rotating roller 12 which is provided on a cassette housing side, acts as a pinch roller and has an automatic aligning function and wound up to a tape take-up reel 3. The tape T which is taken up from a tape supplying reel 2 and wound up on a fixed guide 20, becomes into a slip condition that friction is hardy generated against the guide 20 and therefore, no azimuth effect is generated on the tape T.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing apparatus and a tape cassette suitable for use in an audio apparatus, a video camera apparatus, and the like. More specifically, the present invention relates to a tape running system for running a tape drawn from a tape supply reel. By using a non-rotatable fixed guide having a low coefficient of friction for changing the direction of the tape, the azimuth effect that occurs on the tape is eliminated, and damage to the tape edge or track deviation during recording / reproduction is prevented. .

[0002]

2. Description of the Related Art An example of a conventional recording / reproducing apparatus is shown in FIGS.
Will be described. 6 is a perspective view of the tape cassette in which the tape and the rotary drum device are loaded, in which the upper half of the tape cassette is removed, FIG. 7 is a plan view of the same tape loading state, and FIG. 8 is a tape loading state viewed from the cassette side. FIG.

The recording / reproducing apparatus of this example is a so-called non-tracking (NT) digital micro tape recorder in which a rotary drum device moves to a mouse of a tape cassette and a tape is loaded.

In each of the figures, a tape supply reel 2 and a tape take-up reel 3 are rotatably accommodated in a cassette housing of a tape cassette 1 (only the lower half 1a is shown in FIGS. 6 and 7). After the tape T pulled out from the tape supply reel 2 is changed in the tape running direction by a rotating roller 4 having an automatic centering function provided on the tape supply side of the cassette housing, the tape T at the entrance side of the rotary drum device 5 is changed. The height of the tape path is regulated by the wing guide 6, and thereafter, the tape T is provided on the cassette housing with a pair of left and right self-aligning guides 7,
8 helically winds around the rotating drum 9.

The tape T pulled out from the self-aligning guide 8 is provided on the capstan 11 and the cassette housing side after the tape path height is regulated by the wing guide 10 on the exit side of the rotary drum device 5. The roller is pressed against a rotating roller 12 having an automatic centering function also serving as a pinch roller, driven by a tape, and wound on a tape winding reel 3.

Here, the configuration of the self-centering function will be described with reference to FIG.

The rotating roller 4 is formed by attaching an elastic member 14 such as rubber to an outer peripheral surface of a roller body 13 made of, for example, a resin material. The rotating roller 4 is inserted into a roller shaft 15 and an inner peripheral portion of the roller body 13 is provided. Reduced diameter portion 13a protruding from surface
Are slightly supported on the roller shaft 15. The roller shaft 15 has its upper and lower ends vertically supported by pedestals 15a and 15b formed on the lower half 1a and the upper half 1b.

[0008] The self-aligning function configured as described above has a function that the tape pulled out from the tape supply reel 2 is rotated by the rotating roller 4.
In the state where the tape is wound around, for example, if the tape has a tension change due to an error in the tape path, etc.,
An automatic centering action is performed in which the rotating roller 4 pivots with the reduced diameter portion 13a as a fulcrum, whereby the tape can be automatically centered at the reference path height and run. .

The self-aligning guides 7 and 8 can be wound helically along the leads (not shown) of the rotating drum 9 by the same self-aligning function as described above.

[0010]

However, the tape pulled out from the tape supply reel 2 runs on the rotating roller 4 having a surface made of an elastic material such as rubber with a predetermined frictional pressure, and at the same time, the self-centering of the rotating roller 4 is performed. Will be affected by the action. Therefore, if the roller shaft 15 of the rotating roller 4 is in the vertical state, the tape is centered at the reference path height. As a result, the entire rotating roller 4 is also inclined along the roller shaft 15. For example, as shown in FIG. 10, when the rotating roller 4 is not perpendicular to the running tape T but is inclined at an inclination θ of 90 ° or less, the tape T is affected by the rotating roller 4. Has the effect of moving downward in a direction perpendicular to the traveling direction as indicated by arrow m. That is, the roller shaft 15
The tape is affected by moving in the vertical direction according to the inclination direction of the tape. This phenomenon is generally called an azimuth effect.

That is, the tape T strongly hits the flange 6a of the wing guide 6 due to the azimuth effect, causing tape damage such as curling at the tape edge, or shifting the winding position of the tape around the rotating drum 9 in the vertical direction. As a result, the recording / reproducing operation may not be performed accurately. For this reason, at present, it is necessary to strictly control and control the height system of the wing guide 6 with respect to the cassette, and strictly control the vertical accuracy of the roller shaft 15.

On the other hand, in order to prevent the tape from being wound around the reel during the fast-forward / rewind operation of the tape, the vertical accuracy of the rotating roller 4 and the rotating roller 12 also serving as a pinch roller are minimized in order to minimize the azimuth effect of the tape. Strict coordination and management is required.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and the rotational accuracy of the fixed guide is strictly adjusted and controlled by using a fixed guide instead of a rotating roller having an automatic centering function. To obtain a recording / reproducing apparatus and a tape cassette which can eliminate the azimuth effect of a tape, prevent tape damage and tape displacement during recording / reproduction, and eliminate step winding during tape fast-forward / rewind. With the goal.

[0014]

In order to achieve the above-mentioned object, a recording / reproducing apparatus according to the present invention is a recording / reproducing apparatus in which a rotary drum is inserted into a mouse of a cassette to perform tape loading. The supply-side guide on the inlet side is a non-rotatable fixed guide having a low coefficient of friction with the tape.

[0015] With this configuration, the tape pulled out from the tape supply reel and wound around the fixed guide is in a slip state in which friction does not occur with respect to the fixed guide, so that the perpendicularity of the fixed guide is affected. No tape azimuth effect occurs. Therefore, the tape wound and run from the fixed guide can run along the reference path.

The tape cassette of the recording / reproducing apparatus according to the present invention is a tape cassette in which a rotary drum is inserted into a mouse of the cassette to perform tape loading. A non-rotatable fixed guide having a low coefficient of friction with the tape is arranged.

With this configuration, the tape pulled out from the tape supply reel and wound around the fixed guide is in a slip state in which no friction occurs with respect to the fixed guide, so that the perpendicularity of the fixed guide is affected. The occurrence of the azimuth effect of the tape can be prevented without receiving it.

[0018]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a recording / reproducing apparatus and a tape cassette according to the present invention; Will be explained.

[First Embodiment] FIG. 1 is a plan view of a tape cassette in which a rotary drum device is moved to a tape loading state, and FIG. 2 is a front view of the tape loading state viewed from the cassette side. The same components as those of the recording / reproducing apparatus described in the above-described conventional example are denoted by the same reference numerals and described.

That is, in the present invention, the tape guide provided on the tape supply side of the cassette housing is constituted by the cylindrical fixed guide 20 having a low coefficient of friction. As an example of the fixed guide 20, in the case of a metal material, for example, a stainless steel guide surface smoothed or a brass guide plated with chrome is used. In this case, a resin guide filled with a carbon filler is used.

Thus, the tape running system according to the present invention comprises:
After the tape T pulled out from the tape supply reel 2 is changed in the tape traveling direction by a fixed guide 20 provided on the tape supply side of the cassette housing, the rotating drum device 5
The height of the tape path is regulated by a wing guide 6 which is a tape regulation guide on the entrance side of the tape T. Thereafter, a pair of self-aligning guides 7 and 8 having a self-centering function provided on the cassette housing are provided. Helically around the rotating drum 9.

After the tape T pulled out from the self-aligning guide 8 has its tape path height regulated by a wing guide 10 which is a tape regulating guide on the exit side of the rotary drum device 5, the tape T and the cassette 11 It is pressed against a rotating roller 12 having a self-aligning function also serving as a pinch roller provided on the housing side, driven by a tape, and wound on a tape winding reel 3.

As described above, in the recording / reproducing apparatus according to the present invention, the tape T pulled out from the tape supply reel 2 and wound around the fixed guide 20 is in a slip state in which little friction occurs with respect to the fixed guide 20. Even when the vertical accuracy of the fixed guide 20 is low, the tape is not affected by the running direction of the tape, and the azimuth effect does not occur on the tape. Therefore, the tape traveling from the fixed guide 20 to the wing guide 6 can be regulated along the wing guide 6 and run along an accurate reference path, so that the flange of the wing guide 6 curls the tape edge. Tape damage,
It is possible to prevent the recording / reproducing position from being shifted due to the tape being wound around the rotating drum 9 with the position shifted.

In addition, since the tape can be moved along an accurate reference path regulated by the wing guide 6, there is no need to strictly control and control the vertical accuracy of the fixed guide 20.

Further, the fixed guide 20 may be a barrel-shaped fixed guide 20a having a central portion bulging in a convex shape as shown by a virtual line in FIG.
In the case of the fixed guide 20a, the center of the tape travels at the most bulged portion of the barrel shape. For example, even if a strong tension is generated on the edge side of the traveling tape, the tape edge can cope. Fixed guide 20
Since the guide diameter of a is narrow, the fixed guide 2
The tape edge does not strongly hit 0a, and damages such as edge expansion of the tape can be prevented. Moreover,
The effect that causes an azimuth effect on the tape can be avoided.

[Second Embodiment] FIG. 3 is a plan view of the tape path of this example, and FIG. 4 is a front view of the tape path as viewed from the cassette side, which is the same as the first embodiment of FIG. The components will be described with the same reference numerals.

According to this, the tape guide on the tape supply side is constituted by the same fixed guide 20 as in the first embodiment, and between the rotating roller 12 also serving as a pinch roller and the tape take-up reel 3. , A fixed guide 21 having the same function as the fixed guide 20 is newly disposed. The fixed guide 21 is arranged closer to the cassette mouse side than the rotating roller 12, and the tape T is rotated when the rotating drum device 5 is retracted in the unloading state.
It is designed to be completely separated from 2.

Thus, the tape path in the loading state shown in FIG. 3 is changed after the tape T pulled out from the tape supply reel 2 is changed in the tape running direction by the fixed guide 20 provided on the tape supply side of the cassette housing.
The tape path height is regulated by the wing guide 6 on the entrance side of the rotary drum device 5, and thereafter, the tape T is provided by a pair of right and left self-aligning guides 7 and 8 having an automatic centering function provided on the cassette housing. It is helically wound around the rotating drum 9.

The tape T pulled out from the self-aligning guide 8 is provided on the capstan 11 and the cassette housing side after the tape path height is regulated by the wing guide 10 on the exit side of the rotary drum device 5. The tape is driven by being pressed against a rotating roller 12 having an automatic centering function also serving as a pinch roller, and then the running direction is changed by a fixed guide 21 so that the tape winding reel 3 is driven.
It is wound up.

In the tape path constructed as described above, the fixed guide 2 is pulled out from the tape supply reel 2 and
The tape T wound around 0 is in a slip state in which almost no friction is generated with respect to the fixed guide 20 as in the first embodiment described above. And the vehicle can be driven along an accurate reference path.

Further, the tape wound around the fixed guide 21 provided on the tape winding side also runs in a slip state in which almost no friction occurs in the tape width direction. The tape can be normally wound up without being wound stepwise on the take-up reel 3.

Further, in the case of the fixed guide 21, the barrel-shaped fixed guide 21a whose central portion bulges in a convex shape allows the fixed guide 21a even if a strong tension is generated on the edge side of the running tape. The tape edge does not strongly hit the tape, and the effect of causing edge damage to the tape can be avoided.

In particular, in the present invention, when the rotating drum device 5 retreats and the tape is unloaded as shown in FIG. 5, the tape T is completely separated from the rotating roller 12 so that the tape is fixed to the two fixed guides 20. , 21 only, the tape is fast-forwarded /
In the rewind mode, the tape slips and runs with respect to the fixed guides 20 and 21. Therefore, the tape runs along the reference path without the azimuth effect, and is not stepped around the respective reels 2 and 3. It can be wound up normally.

The present invention is not limited to the embodiment described above and shown in the drawings, and various modifications can be made without departing from the scope of the invention.

In this embodiment, a case is described in which the present invention is applied to a non-tracking type recording / reproducing apparatus in which the rotary drum device 5 moves with respect to the tape cassette 1 to perform a tape loading operation. Can be widely applied to a recording / reproducing apparatus in which the tape is guided to a reference path by a tape regulating guide having flanges at upper and lower ends from a tape guide and a tape cassette thereof.

[0036]

As described above, in the recording / reproducing apparatus according to the present invention, in a recording / reproducing apparatus in which a rotary drum is inserted into a mouse of a cassette and tape loading is performed, a supply side guide at an entrance side of the rotary drum is provided. By using a non-rotatable fixed guide with a low coefficient of friction with the tape, it is possible to avoid the azimuth effect of the tape. It is possible to prevent the recording / reproducing position from being shifted by being wound around the rotating drum and to provide a highly reliable recording / reproducing apparatus.

Further, since the tape can be run along an accurate reference path, it is not necessary to strictly control and control the vertical accuracy of the fixed guide, thereby facilitating the production.

Further, a non-rotatable fixed guide having a low coefficient of friction with the tape is arranged between the winding side guide having a self-aligning function also serving as a pinch roller and the tape winding side reel. By preventing the tape from contacting the tape in the running mode other than pressing the capstan, the tape can be prevented from being stepped onto the reel in the fast-forward / rewind mode.

In the tape cassette according to the present invention, in a tape cassette of a recording / reproducing apparatus in which a rotary drum is inserted into a mouse of the cassette and tape loading is performed, a supply side guide at an entrance side of the rotary drum is connected to the tape. By providing a non-rotatable fixed guide with a low coefficient of friction in the cassette housing, it is possible to avoid the azimuth effect of the tape, whereby tape damage such as curling of the tape edge by the flange of the tape regulating guide, It is possible to prevent the recording / reproducing position from being shifted due to the tape being wound around the rotating drum while being shifted, resulting in a highly reliable tape cassette.

Further, since the tape can be run along an accurate reference path by being regulated by the tape regulating guide, it is also necessary to strictly control and adjust the vertical accuracy of the fixed guide and the lead for regulating the tape position of the rotating drum. It becomes a tape cassette which is easy to manufacture without any.

Further, a non-rotatable fixed guide having a low coefficient of friction with the tape is disposed between the winding side guide having an automatic centering function also serving as a pinch roller and the tape winding side reel. By not making contact with the tape in the running mode other than pressing the tape with the capstan, the tape cassette can prevent the tape from being stepped onto the reel in the fast-forward / rewind mode.

[Brief description of the drawings]

FIG. 1 is a plan view of a recording and reproducing apparatus according to a first embodiment of the present invention in a tape loading state.

FIG. 2 is a front view of the tape loading state viewed from the tape cassette side.

FIG. 3 is a plan view of a recording / reproducing apparatus according to a second embodiment of the present invention in a tape loading state.

FIG. 4 is a front view of the same tape loading state as viewed from the tape cassette side.

FIG. 5 is a plan view of the same unloading state.

FIG. 6 is a perspective view of a conventional non-tracking type recording / reproducing apparatus.

FIG. 7 is a plan view of the same tape loading state.

FIG. 8 is a front view of the same tape loading state as viewed from the tape cassette side.

FIG. 9 is an enlarged cross-sectional view of a rotating roller having an automatic centering function.

FIG. 10 is an explanatory diagram in which an azimuth effect occurs in a tape.

[Explanation of symbols]

1 tape cassette, 2 tape supply reel, 3 tape take-up reel, 5 rotating drum device, 6,10 wing guide, 7,8 self-aligning guide, 9 rotating drum, 11 capstan, 12 rotating roller also serving as pinch roller, 20, 21 fixed guide, 20a,
21a Barrel shaped fixed guide

Claims (4)

[Claims] 1. A method in which a rotating drum is inserted into a mouse of a cassette to perform tape loading, and a tape pulled out from a tape supply reel of the cassette has an automatic centering function at an entrance side of the rotating drum. A recording / reproducing apparatus which is wound around a supply side guide, and winds the tape to a tape winding reel via a winding side guide having an automatic centering function also serving as a pinch roller to which a capstan is pressed at the outlet side of the rotary drum. 3. The recording / reproducing apparatus according to claim 1, wherein the self-centering function is abolished as the supply-side guide on the inlet side of the rotary drum, and a non-rotatable fixed guide having a low coefficient of friction with a tape is provided. 2. The recording / reproducing apparatus according to claim 1, wherein a non-rotatable tape having a low coefficient of friction with a tape is provided between the take-up guide and the tape take-up reel having an automatic centering function also serving as a pinch roller. A recording / reproducing apparatus, wherein a fixed guide is disposed so that the winding-side guide does not come into contact with the tape in a running mode other than pressing the capstan against the capstan. 3. A method in which a rotary drum is inserted into a mouse of a cassette, wherein a tape drawn from a tape supply reel of the cassette is wound around a supply side guide having an automatic centering function at an entrance side of the rotary drum. A tape cassette of a recording / reproducing apparatus in which the tape is wound on a tape winding reel via a winding side guide having an automatic centering function also serving as a pinch roller to which a capstan is pressed on the outlet side of the rotary drum, A tape cassette for a recording / reproducing apparatus, wherein a self-centering function is abolished as the supply-side guide on the inlet side of the rotary drum, and a non-rotatable fixed guide having a low coefficient of friction with a tape is arranged. 4. The tape cassette according to claim 3, wherein a coefficient of friction between the tape and the take-up reel is adjusted between the take-up side guide and the tape take-up reel having an automatic centering function also serving as a pinch roller. A tape cassette for a recording / reproducing apparatus, wherein a low-rotation fixed guide is arranged so that the winding-side guide does not come into contact with the tape in a running mode other than pressing on the capstan.