KR100254949B1 - Medium carrier device - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a media recording and reproducing apparatus in which a pair of conveying rollers picked up by a recording medium is driven by a driving force transmitting means, wherein the recording medium is inserted and conveyed by a main driving roller and a sub-drive roller having a driving force transmitting means. The roller pair is provided with at least three sets of the first driving roller pair, the second driving roller pair, and the third driving roller pair, and the second driving roller pair is disposed near the magnetic head disposed to reach the medium conveying path, The first and third drive roller pairs are arranged in the medium conveying direction with the second drive roller pair interposed therebetween, and each of the sub-drive rollers of the first and third drive roller pairs is the main of the first and third drive roller pairs. The first and third drive roller diameters of the first and third drive roller pairs may be set to be bent more easily than the drive rollers, and thus to be more easily bent than the main drive rollers of the first and third drive roller pairs. Pair The configuration characteristic is that the diameter is set slightly larger than the main drive roller diameter. According to such a configuration, it is possible to provide a small card recording and reproducing apparatus which is capable of stably conveying a medium having a high media conveyance force and having a stable conveyance speed and having a different thickness.

Description

Media transport apparatus for media recording and reproducing apparatus

1 is a schematic diagram of a medium recording and reproducing apparatus according to an embodiment of the present invention.

2 is a plan view showing the configuration of the main drive roller and its driving force transmitting means.

3 is a plan view showing a schematic configuration of a sub drive roller, its driving force transmitting means, and a compression moving means and a driving force buffering means.

4 is a front view showing the configuration of the driving force buffering means.

5 is a side view showing the configuration of the compression moving means.

6 is a partially broken front view showing the configuration of the compression moving means.

7 is an explanatory diagram showing a relationship between a main drive roller and a sub drive roller.

8 is a side view showing an entry state of the recording medium in the first and third drive roller pairs.

Fig. 9 is a side view showing the movement state of the recording medium from the first drive roller pair to the second drive roller pair.

10 is an enlarged view showing the action of the driving force buffering means.

11 is a plan view of a recording medium according to the present invention.

* Explanation of symbols for main parts of the drawings

1: Media recording and reproducing apparatus 2: Media conveying path

3: compression movement means 4, 5: magnetic head

6: 1st drive roller pair 7: 2nd drive roller pair

8: 3rd drive roller pair 6A, 7A, 8A: main drive roller

6B, 7B, 8B: sub-drive rollers 12, 15: drive shaft of the first drive roller pair

14, 17: drive shaft of the third drive roller pair 19, 20: drive force transmission means

A: Medium conveying direction C: Recording medium

X1: 1st drive roller diameter X2: 1st main drive roller diameter

Y1: 2nd driven roller diameter Y2: 2nd driven roller diameter

Z1: 3rd driven roller diameter Z2: 3rd driven roller diameter

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a media recording and reproducing apparatus of a double-side drive type in which a pair of conveying rollers sandwiching a recording medium is driven by a driving force transmitting means, and more particularly, to a media conveying apparatus used for this media recording and reproducing apparatus.

Background Art Conventional media recording and reproducing apparatuses for carrying a recording signal on which magnetic signals can be recorded and reproduced, for example, a magnetic card, by means of a magnetic head for recording and reproducing the magnetic signals on the same card have already been used in various fields. Such a media recording and reproducing apparatus generally employs a planar drive method in which one of the conveying rollers facing the medium conveying path is used as a driving shaft and the other is a driven shaft, and both magnetic cards inserted in the medium conveying path are used. It is pinched by the roller of and conveyed. In addition, the medium recording and reproducing apparatus has a double-sided driving method in which both of the conveying roller pairs are used as driving rollers for the purpose of increasing the conveyance force of the card. In this double-sided drive-type medium recording and reproducing apparatus, the opposing conveying rollers are driven rollers driven by the drive means, respectively.

The biggest problem in the media recording and reproducing apparatus employing the double-sided driving method described above is that a poor condition may be remarkable due to the peripheral speed difference of the opposing conveying rollers. That is, if there is a difference in the rotational speed between the opposite conveying rollers, the magnetic cards are picked up by the conveying rollers having different circumferential speeds, and the magnetic cards are controlled by the rollers having high conveying force. However, it is not clear which conveying roller is fast and which conveying roller is slow, because the circumferential speed of each conveying roller is different depending on the loss of the driving force transmission system, the degree of wear of the roller, or the difference in roller diameter according to individual differences in roller manufacturing. If a plurality of conveying roller pairs in such a state are arranged on the medium conveying path, an unbalance in the conveying speed of the magnetic card occurs depending on the place, and the card cannot be conveyed stably and the card cannot be recorded and reproduced. Therefore, in the double-sided driving method, the media recording and reproducing apparatus detects the speed of the card by the rotation detecting means and records and reproduces it according to the result. However, by providing the rotation detecting means, the number of parts increases and the device configuration becomes complicated. .

However, magnetic cards have relatively thick cards such as credit cards or thin cards such as prepaid cards, leading to the emergence of a media recording and reproducing apparatus capable of coping with cards having different thicknesses. In this type of media recording and reproducing apparatus, a method of setting the pad pressure for a card having a different thickness is a technical problem. For example, when using this as a double-sided media recording and reproducing apparatus, the hardness of the opposite conveying roller is configured so that both sides bend together easily, and if the gap between the rollers is set narrower than the thickness of a thin card, it is suitable for cards of different thickness. It is possible to convey by giving a pad pressure. However, when both of the conveying rollers are used to bend the rollers, the roller diameter is easily changed depending on the jogner, such as temperature, so that the circumferential speed is increased and the stable conveyance of the card becomes difficult. In addition, even if one side of the conveying rollers arranged opposite is freely supported by the compression moving means with respect to the other roller, the gap between the rollers can be changed according to the change of the card thickness. It is possible to give the pad pressure, but the result is a complicated device configuration and a large device.

An object of the present invention is to provide a compact medium recording apparatus for a medium recording and reproducing apparatus having a high medium conveying force and a stable conveying speed, and to realize a small card recording and reproducing apparatus capable of stably conveying media having different thicknesses.

The following describes an embodiment of the present invention with reference to the drawings.

In the media recording and reproducing apparatus indicated by reference numeral 1 in FIG. 1, the magnetic card C as a recording medium inserted on the media conveying path 2 is provided with a first drive roller pair 6 and a second drive roller pair 7; And the third drive roller pair 8 is sandwiched and conveyed, and the recording and reproducing signals are sent and received as magnetic information by the magnetic heads 4 and 5 arranged near the medium conveying path 2.

The medium conveying path 2 is formed between the frames 1A and 1B arranged side by side facing each other as shown in FIG. Card detecting means 9 and 10 are disposed in the insertion port 2a of the medium conveying path 2 via the medium conveying path 2. The card detecting means (9, 10) detects whether or not the magnetic card (C) is in accordance with the presence or absence of the magnetic signal of the card (C) to be inserted. Here, the driving motor (11) is started or advancing into the medium transport path (2). It is one of the triggers of the opening and closing operation of the well-known shutter structure, which is not shown.

Each of the first, second, and third drive roller pairs 6, 7, 8 is provided with the main drive rollers 6A, which are disposed below the medium conveying path 2, as shown in Figs. 7A, 8A and sub-drive rollers 6B, 7B, and 8B disposed above the medium conveying path 2, respectively. The outer periphery of the main drive rollers 6A, 7A, 8A and the sub-drive rollers 6B, 7B, 8B is made of an elastic material, and specific examples of the elastic material include a rubber layer. The 1st conveyance roller pair 6 and the 3rd conveyance roller pair 8 are set slower than the 2nd conveyance roller pair 7. The circumferential speed referred to here refers to the roller surface speed or the medium conveying speed of the outer diameter including the deformation of the roller itself.

The medium conveying path 2 and the driving roller pair together constitute a medium conveying apparatus.

The main drive rollers 6A, 7A, 8A are fixed to the drive shafts 12, 13, 14 supported by the pair of bearings 18a, 18b, 18c on the frame 1A and the frame 1C, respectively. It is fixed to the drive shafts 12, 13, and 14, respectively. The drive shafts 12, 13 and 14 are provided with belt pulleys 191, 192 and 193 constituting the driving force transmission means 19 on the main drive side. The belt flips 191 and 193 are rotatably supported with respect to the drive shafts 12 and 14 via the bearing 207A, respectively, and the belt flip 192 is fixed to the drive shaft 13. The belt belts 191, 192, and 193 have a driving belt 190 with teeth. The teeth 190 are generated by the driving force transmission means 19 because tension is imparted by the tension fleeces 21a and 21b and the tension fleece 22 which are rotatably disposed on both sides of the belt fleece 192. The driving force transmission loss to the main drive rollers 6A, 7A, and 8A can be prevented.

Cog wheels 201 and 202 constituting the driving force transmission means 20 of the sub-drive shaft are fixed to the drive shafts 12 and 14. In the sleeves 201a and 202a of the gears 201 and 202, pins 201b and 202b extending in the radial direction are provided through the drive shafts 12 and 14, respectively. The pin 202b is provided so that the protrusion 193a which extends in the axial direction provided in the belt fleece 193 can couple | engage when the said fleece 193 rotates.

A handle 39 for manually rotating the drive shaft 12 is fixed to the outermost end of the drive shaft 12. Between the cogwheel 210 and the frame 1A, the cogwheel 203 is rotatably supported through the bearing 207B, and the cogwheel 203 is supported by the belt fleece 19 as shown in FIG. An opening 203a into which the protruding protrusion 191a is inserted and a protrusion 203b that can engage with the pin 201b of the gear 201 are formed.

That is, the cog wheel 203 is integrally rotatable with the belt fleece 191, and rotates so that when the protrusion 203b is engaged with the pin 201b, the cog wheel 201 is integrally rotated to rotate the main drive roller 6A. Is driven to rotate. The gear 202 is rotated when the belt fleece 193 rotates and the protrusion 193a engages with the pin 202b to rotate and drive the main drive roller 8A. These pins 201b and 202b and the protrusions 203b and 193a respectively constitute a coupling means 200 for revolving the roller to a certain range.

A large diameter pleat 194 is fixed to the drive shaft 13, and an endless timing belt 196a is wound around the large diameter pleat 194, and the timing belt 196a is also a driving source on the other side. It is also wound up to a small diameter fleece 195 fixed to the output shaft 11A of the motor 11.

The sub-drive rollers 6B and 8B are respectively fixed to the drive shafts 15 and 17 supported through the pair of bearings 18d and 18e on the frame 1A and the frame 1C as shown in FIG. The sub-drive roller 7B is fixed to the drive shaft 16 supported by the compression movement means 3.

Cogwheels 204 and 205 meshing with cogwheels 201 and 202 are fixed to drive shafts 15 and 17. As shown in FIG. 4, the drive shaft 15 has a cogwheel 206 constituting part of both the drive force transmission means 20 and the drive force buffering means 23 between the cog wheel 204 and the frame 1A. The cogwheel 231 which is present is rotatably supported via bearings 208A and 208B, respectively. The gear 206 meshes with the gear 203 on the main drive side.

The fleece 233 is fixed to the drive shaft 16. Two plies of circumferential grooves 231a and 233a are formed in the pleats 233 and the gear pleats 231, and two round belts 232 are crossed in each groove. The round belt 232 is elastic, and when the rotational difference between the main drive roller 7A and the sub-drive roller 7B occurs, the elastic force is set so that the round belt 232 is stretched with respect to the fleece 231 and 233. It is. In other words, the driving force transmitted to the auxiliary drive roller 7B by the driving force transmission means 20 is buffered to follow the main drive roller 7A_ when overloaded.

Although the back belt 232 is used here, it is not limited to this, For example, an elastic flat belt may be sufficient. In the case of the flat belt, the circumferential groove necessary for using the round belt 232 may not be provided on the fleece.

Next, the compression moving means 3 will be described. The compression movement means (3) supports the sub-drive roller (7B) freely with respect to the main drive roller (7A) and compressively compresses the drive shaft as shown in FIG. 3, FIG. 5, and FIG. A pad arm 30 and a compression coil spring 32 for supporting 16 are provided. The pad arm 30 extends toward the card conveyance direction (arrow A direction) in the shape of the cross section. The base end 301 of the pad arm 30 is arranged on the side of the card insertion opening 2a, and is supported by the frames 1A and 1C so as to be swingable along the shaft 31. The drive shaft 16 is rotatably supported by the free end 302 of the pad arm 30 via the bearings 37 and 38 at the side surfaces 30a and 30b. The drive shaft 16 protrudes out of the medium transport path 2 from the opening 1E provided in the frame 1A larger than the diameter of the coaxial, so that the interference of the frame 1A can be prevented when it moves.

The arm guide shaft 33 penetrates upward through the spacer 36 in the pad arm 30 positioned above the drive shaft 16. On the upper side of the arm guide shaft 33, as shown in FIG. 6, a threaded portion 33a is formed, and the threaded portion 33a is fitted to the pad frame 1D formed by cutting the frame 1A up and down, and is fitted with a pad arm. The free end 302 side of 30 is hung so as to be movable, and the lock nut 35 for preventing sagging is fitted to the threaded portion 33a on the upper side of the pad frame 1D.

A compression coil spring 32 is arranged between the lower surface 1Da of the pad frame 1D and the upper surface 30C of the pad arm 30 so as to surround the arm guide shaft 33. It pushes down and exerts a compressive force. In addition, a groove 33b is formed at the tip of the arm guide shaft 33. As shown in FIG. 5, the groove 40b is inserted into the groove 33b to rotate the main drive roller 7A. It is possible to adjust the spacing of the drive rollers 7B.

The card C and the magnetic heads 4 and 5 will be described. In the present embodiment, the card C has a thick card C1 and an eleventh (b), in which the magnetic stripe C1a shown in FIG. 11 (a) is represented by a credit card or the like provided on the upper or lower surface of the card. A thin card C2 whose magnetic stripe C2a indicated by is represented by a prepaid card or the like provided on the lower surface of the card is used. The magnetic head 4 corresponds to the thick card c1 and the magnetic head 5 corresponds to both the thick card C1 and the thin card C2, and the magnetic stripe of the cards C1 and C2, respectively. The magnetic recording signal is transmitted and received by contacting C1a) and C2a. The magnetic head 4 is urged toward the magnetic head 5 by compression means (not shown). As shown in FIG. 5, in the medium conveyance path 2A near the second drive roller pair 7, the width in the card thickness direction is narrow. This width is set slightly larger than the thickness of the thick card C1, and functions to orthogonally contact the magnetic heads 4 and 5 so as to be the card C. FIG.

In addition, the main shafts of the main drive rollers 6A, the sub-drive rollers 6B, the main drive rollers 8A, and the sub-drive rollers 8B are deformed, respectively. The contact is made so as not to contact.

Next, the relationship between the 1st drive roller pair 6, the 2nd drive roller pair 7, and the 3rd drive roller pair 8 is demonstrated with FIG. Before driving the card C, the main driving rollers 6A, 7A, 8A and the sub-drive rollers 6B, 7B, and 8B have their respective roller peripheral surfaces on the same plane line (0). It is arranged to. Each of the sub-drive rollers 6B, 8B of the first and third drive roller pairs 6, 8 is easier to change than the opposing main drive rollers 6A, 8A. In other words, the amount of deformation of the entire roller when the same compressive force is applied is set larger than that of the main drive rollers 6A and 6B.

In addition, the main drive rollers 6A, 7A, 8A and the sub-drive roller 7B are made of a material having a relatively smaller amount of deformation than the sub-drive rollers 6B, 8B. That is, the deformation amount of the whole roller when the same compressive force is given is set small. The relationship of each of these rollers is shown in Table 1.

TABLE 1

The operation of the media recording and reproducing apparatus 1 having such a configuration will be described. When the card C is inserted into the card insertion opening 2a and the magnetic signal is detected by the card detecting means 9 or 10, the motor 11 starts up and the card C is moved in the card conveying direction A here. In order to convey, the shutter member (not shown) withdraws from the medium conveyance path 2 at the same time as it rotates in the clockwise direction in FIG. The rotation of the motor 11 is transmitted to the large diameter fleece 194 through the timing belt 196 so that the drive shaft 13 rotates so that the main drive roller 7A rotates. The rotation of the drive shaft 13 is transmitted to the belt flies 191 and 193 through the toothed belt 190. When the belt fleece 191 rotates, as shown in FIG. 4, the drive shaft (in the fleece 233 shown in FIG. 3 through the integrated gear 203, the cog wheel 206, and the round belt 232) 16, the sub-drive roller 7B is driven to rotate.

When the cogwheel 203 rotates and the protrusion 203b engages the pin 201b, the cogwheel 201 rotates so that the drive shaft 12 rotates and the cogwheel 201 and the cogwheel 204 are rotated. The drive shaft 15 rotates through this, and the main drive gear 6A and the sub-drive roller 6B rotate and drive.

When the belt flies 193 rotate and the protrusions 193a engage the pins 202b, the cog wheels 202 rotate to rotate the drive shaft 12 and simultaneously rotate the cog wheels 202 and the cog wheels 205. The drive shaft 17 is rotated through the main drive roller 8A and the sub-drive roller 8B to rotate to drive the first, second and third drive roller pairs 6, 7, and 8, respectively. It becomes a state.

The inserted card C is inserted and picked up in the order of the first, second, and third drive roller pairs 6, 7, and 8, and conveyed in the medium conveying path 2, and the type of card The magnetic recording signals are transmitted and received by either of the magnetic heads 4 and 5 by C1 and C2. The sub-drive rollers 6B and 8B are set to bend more easily than the sub-drive rollers 7B and the main drive rollers 6A, 7A, and 8A, and also drive shafts 12, 15, and drive shafts ( Since the 14 and 17 are fixed shafts with respect to the frame 1A, as shown in FIG. 8, regardless of the type of the card C, the sub-drive rollers 6B and 8B are opposed to the main drive. It deforms larger than the rollers 6A and 8A.

Therefore, the first and third drive roller pairs 6 and 8 have a sub-drive roller when the main speed difference occurs between the sub-drive rollers 6B and 8B and the main drive rollers 6A and 8A. Since the circumferential speed difference is absorbed by the deformation of 6B) and 8B, the conveyance speed of the card C is stabilized without controlling substrate regeneration by the rotation detecting means as in the prior art.

In addition, since the pad pressure can be applied to the card C without pressing one of the conveying rollers (here, the sub-drive rollers 6B and 8B to the main drive rollers 6A and 8A), the number of parts Can be prevented from increasing and the complexity of the device can be prevented and the size of the device can be prevented from increasing.

When the card C is conveyed from the first drive roller pair 6 to the second drive roller pair 7, as shown in FIG. 5, the pad arm 30 moves around the shaft 31 around the shaft 31. As shown in FIG. In response to the elastic force of (32), it swings toward the arrow B direction, and the sub-drive roller 7B is lifted as shown by the dashed-two dotted line. Since the main driving roller 7A and the sub-drive roller 7B have the same hardness and the sub-drive roller 7B is displaced upward, even if cards C1 and C2 of different thicknesses are conveyed, The circumferential speeds of the main drive rollers 7A and the sub drive rollers 7B are the same, and the conveying speed is stabilized when passing through the magnetic heads 4 and 5.

Therefore, in the medium recording and reproducing apparatus 1 which carries a double-sided driving method and conveys a card C having a different thickness, the recording and reproducing of the card C can be made stable.

If the load on the card C to be conveyed takes more with respect to the sub conveyance roller B than the main drive roller 7A, for example, the circumferential speed of the sub drive roller 7B is lower than that of the main drive roller 7A. If it is faster than the circumferential speed, as shown in FIG. 10, the round belt 232 which transmits a driving force to the sub conveyance roller 7B expands | stretches with respect to the fleece 232,233, and the driving force applied to the sub conveyance roller 7B. This lowers and the circumferential speed difference is absorbed. On the other hand, since the driving force is transmitted from the toothed belt 190 to the main driving roller 7A, the main driving roller 7A is more slippery than the round belt 232. As a result, the driving force for the main drive roller 7A becomes larger than the driving force for the sub drive roller 7B.

Therefore, the card C inserted and picked up by the second drive roller pair 7 is governed by the main drive roller 7A having a large driving force and conveyed, and the circumferential speed is between the main drive roller 7A and the sub drive roller 7B. Even when a difference occurs, the card C can be conveyed stably and the recording and reproducing of the card can be made stable.

Since the coupling means 200 and 200 are provided in the 1st conveyance roller pair 6 and the 3rd conveyance roller pair 8 with which the circumferential speed was set later than the 2nd conveyance roller pair 7, the magnetic card C was carried out. When the first conveying roller pair 6 or the third conveying roller 8 is conveyed toward the second conveying roller 7 and enters the second conveying roller, the main driving roller 7A driving to this card C is driven. And the driving force is applied in the up and down direction by the sub-drive roller 7B. Then, the main and sub-drive rollers 6A, 6B of the first transport roller pair and the main and sub-drive rollers 8A, 8B of the third transport roller pair are the first drive shaft 12, the second drive shaft ( 15, rotation is performed earlier than the rotation of the drive shafts 14 and 17, and the engagement of the protrusion 203b and the pin 201b, and the protrusion 193a and the pin 202b is released for a moment. That is, the first conveyance roller pair 6 and the third conveyance roller pair 8 are idle with respect to the driving mechanism 19 and the driving force transmission mechanism 20.

Therefore, the 1st conveyance roller 6 or the 3rd conveyance roller pair 8 will follow the form of the 2nd conveyance roller pair 7, and the card C has only the driving force of the 2nd conveyance roller pair 7 Delivered. Therefore, when the magnetic card C is conveyed in the vicinity of the magnetic heads 4 and 5, the second conveyance is not affected by the conveying force of the first conveying roller pair 6 and the third conveying roller pair 8. Since it is conveyed at the conveyance speed according to the circumferential speed of the roller pair 7, the fluctuation of the card conveyance speed is reduced, the conveyance speed is stable, and recording and reproduction defects are reduced.

In the above-described embodiment, although the main drive rollers 6A, 7A, and 8A differ from the deformation amounts of the sub-drive rollers 6B, 7B, and 8B, as shown in Table 2, each drive You may leave a car in advance in the diameter of a roller pair. In addition, the deformation amount (effective hardness) of each drive roller is taken as the conditions shown in Table 1.

TABLE 2

For example, with respect to the diameter Y1 of the main drive roller 7A shown in FIG. 7, the diameters X1 and Z1 of the main drive rollers 6A and 8A are set small, and the main drive rollers. The diameter Y1 of 7A and the diameter Y2 of the subdrive roller 7B are set equal. Then, the circumferential speeds of the main drive rollers 6A and 8A are later than the circumferential speeds of the main drive rollers 7A, and the card C conveyed is carried out by the first and third drive roller pairs 6 and 8. When handing over to the 2nd drive roller pair 7, it is conveyed in the state dominated by the circumferential speed of the main drive roller 7A, and is conveyed with respect to the magnetic heads 4 and 5 at a fixed conveyance speed. Therefore, even if the conveyance speed of the card C fluctuates in the first drive roller pair 6 or the third drive roller pair 8, the recording and reproducing of the card C can be made stable.

The diameters X2 and Z2 of the sub-drive rollers 6B and 8B are slightly larger than the diameters X1 and Z1 of the main drive rollers 6A and 8A under the conditions of the roller diameter described above. The diameter is set so as to be equal to the diameters X1 and Z1 of the main driving rollers 6A and 8A when the card C is inserted between the rollers and the roller is deformed.

With this setting, the main drive rollers 6A, 7A, 8A and the sub drive rollers 6B, 7B, 8B are driven so that the card C is shown in FIG. And the first and third drive roller pairs 6 are crushed and the sub-drive roller 6B is crushed, so that the peripheral speed difference between the main drive roller 6A and the sub-drive roller 6B is absorbed and the card C has a constant speed. It is conveyed toward the 2nd drive roller pair 7 by the furnace.

When the card C is inserted and picked up by the third drive roller pair 8, the sub-drive roller 8B is crushed, similarly to the first drive roller pair 6, the main drive roller 8A and the sub-drive roller 8B. The main speed difference is absorbed. Therefore, when the card C is inserted at the third drive roller pair 8 side or when the card C is reciprocated, the card C is conveyed to the second drive roller pair 7 at a constant speed. .

When the card C is conveyed and pinched from the first driving roller pair 7 to the second driving roller pair 7, the second driving roller pair 7 is set to have a faster peripheral speed in relation to the roller diameter. For this reason, the card C is pulled from the first drive roller pair 1 to the second drive roller pair 2, and is turned over, and is controlled at the circumferential speed of the second drive roller pair 7 and conveyed. In this way, by setting the roller diameter, the card conveyance speed on the medium conveying path 2 is stabilized, so that the recording and reproducing of the card C can be made stable.

Incidentally, since the main driving roller 7A and the sub-drive roller 7B are set to the same diameter at the same effective hardness, they are deformed similarly even when the pad pressure is applied. In addition, the main drive rollers 6A and 8A are configured to have the same effective diameter as the main drive rollers 7A and the sub-drive rollers 7B, and the sub-drive rollers 6B and the sub-drive rollers 8B are main drive. It is set lower than the effective hardness of the rollers 6A and 8A (easy to deform). Therefore, even when the environment, such as temperature, changes, the difference of the roller deformation amount of the 1st and 3rd drive roller pairs 6 and 8 and the 2nd drive roller pair 7 will fluctuate similarly, and it looks even in the long run. Carriage of the card C can be stably reduced in recording and playback failure. This is connected with the improvement of the durability of the medium recording and reproducing apparatus 1.

As shown in FIG. 8, for example, the magnetic card C is blocked in the medium conveying path 2 in a state of being pinched by the card feed roller pair 6 due to deformation (curvature) or the like of the card. It is assumed that the knob 39 shown in FIG. 2 is rotated. Then, the first transmission gear 201 fixed to the first drive shaft 12 is rotated so that the second transmission gear 204 shown in FIG. 3 is engaged with the first transmission gear 201. By rotating, the second drive shaft 15 to which the second transfer means 204 is fixed rotates. Although the first cogwheel 203 and the second cogwheel 206 are engaged, the first cogwheel 203 and the second cogwheel 206 are rotatably supported by the first drive shaft 12 and the second drive shaft 15. The main drive roller 6A and the sub-drive roller 6B rotate, but the pulleys 191 and teeth are provided until the installed pin 201b engages with the protrusion 203b provided on the first gear 203. This rotation is not transmitted to the fleece 231. Therefore, since the drive mechanism 19 is not operated, the driving force connection between the first conveying roller 6 and the drive mechanism 19 is released, and the handle 39 can be turned with a light force, causing the magnetic card C to be blocked. ) Can be easily recovered.

In the conventional media conveying apparatus, since the coupling means 200 is installed in the large fleece 194 and the fleece 192, the first to third conveyance roller pairs are rotated when the handle 39 is turned as in the present embodiment. (6), (7) (8) are all rotated, a large force is required for the force to rotate the handle 39, in this embodiment can solve such a bad state.

In the present embodiment, the main drive rollers 6A, 7A, and 8A are located above the medium transport path 2, and the sub drive rollers 6B, 7B, 8B are located on the medium transport path 2. Although the example arrange | positioned below has been demonstrated, it is not limited to this, You may arrange | position the main and secondary drive rollers upside down. In other words, it is applied to both the drive roller pairs of the double-sided driving method in which the card C is inserted on both sides to give the driving force.

In this embodiment, the medium recording and reproducing apparatus 1 is a one-side conveying system, but the card C is reciprocally conveyed on the medium conveying path 2 by using a motor capable of forward and reverse rotation to the drive source. It may be applied to the media recording and reproducing apparatus of the system.

Furthermore, as an example of the recording medium of the present invention, the magnetic card C has been described as an embodiment, but the present invention is not limited to the magnetic card alone. The magnetic IC card provided with the IC chip on the magnetic card and optical information can be recorded and reproduced. Of course, even if it is a plate-shaped recording medium. Although the magnetic heads 4 and 5 are used in the embodiment as the information recording and reproducing head of the present invention, heads capable of recording and reproducing light or magneto-optical signals corresponding to the cards described above, or heads such as IC contacts, etc. It may be.

According to the present invention, in a two-drive media recording and reproducing apparatus in which drive shafts supporting oppositely arranged conveying rollers are rotated in the same manner, the sub-drive roller side of the first and third drive roller pairs is the main drive roller pair. Since it is easier to bend than the driving roller, if the main speed difference occurs between the main drive roller and the sub-drive roller, the sub-drive roller deforms because the sub-drive roller deforms. By deforming, the main speed difference of a main drive roller and a sub drive roller is absorbed. In addition, since the diameters of the sub-drive rollers of the first and third drive roller pairs are set to a diameter slightly larger than the diameters of the main drive rollers of the first and third drive roller pairs, In this case, the diameter of the main drive roller can be approximately the same diameter. Therefore, the circumferential speed difference of the main drive roller can be made small, and the recording medium can be conveyed stably. Therefore, it is possible to extremely reduce the recording and reproducing defects of the recording medium conveyance even if the rotation detecting means is provided and the timing other than the recording and reproducing as in the prior art is reduced, and the complexity of the apparatus used by the rotation detecting means can be reduced. As a result, the device can be miniaturized.

In the case where the main drive roller and the sub-drive roller have a main speed difference, the driving force to the sub-drive roller is missed by the elastic belt so that the main speed difference between the main drive roller and the sub-drive roller is absorbed. Can be transported stably. In addition, when the recording medium is caught in two conveying roller pairs, such as the first conveying roller pair and the second conveying roller pair or the second conveying roller pair and the third conveying roller pair, The first conveying roller pair and the third conveying roller pair are freely rotated with respect to the driving force transmitting means by the engaging means to cut the driving force. Therefore, the recording medium to be conveyed is conveyed only by the driving force of the second conveying roller pair, and the recording medium can be stably conveyed even when the recording medium is conveyed over two conveying roller pairs having different circumferential speeds.

In addition, if the movable piece provided on the first rotating means rotatably supported on the first drive shaft and the atmospheric piece provided on the first drive shaft are not coupled, the conveying roller pair is free to the drive mechanism, so the medium conveying apparatus of the double-sided driving method Even when the recording medium is inserted into or removed from the medium transport path, the operation can be assured with a weak force. In addition, when the movable piece and the atmospheric piece are combined, the driving force in the drive mechanism is transmitted to the second transfer means fixed to the second drive shaft through the first transfer means fixed to the first drive shaft, and the main drive roller fixed to each drive shaft. The sub-drive rollers are driven synchronously. Therefore, it is possible to easily synchronize the conveying rollers with a simple configuration of providing the first and second conveying means.

Claims (10)

At least the first drive roller pair 6 for the drive roller pair for picking up and transporting the recording medium by the main drive rollers 6A, 7A, 8A having the drive force transmission means 19 and the sub drive rollers 6B, 7B, 8B. ), The second drive roller pair (7) is placed near the magnetic head arranged to reach the medium transport path (2), so that the first and third drive roller pairs are sandwiched between the second drive roller pairs. 1), the second drive roller pair is fitted with a recording medium by a main drive roller driven integrally with the drive means by a drive means and a sub drive roller connected through an elastic belt interposed between the drive means. A medium conveying apparatus comprising at least one set of drive roller pairs for picking up and conveying. 2. The method of claim 1, wherein the secondary drive rollers of the second drive roller pair are movable with respect to the main drive rollers of the second drive roller pair, and the compressive force of the recording medium is imparted as the secondary drive rollers move. A medium conveying apparatus having a compression moving means. The medium conveying apparatus of Claim 1 or 2 provided with the elastic material so that the diameter of the said main drive roller and the sub drive roller may be the same diameter, and it may be the same amount of deformation when the same compression force is applied. The first transport roller pair and the first transport roller pair and the first and second transport roller pairs according to claim 1, wherein the diameters of the first transport roller pair and the third transport roller pair are set smaller than the diameter of the second transport roller pair. The circumferential speed of the three conveying roller pairs is set later than the circumferential speed of the second conveying roller pair arranged near the information recording reproduction head, and between the first conveying roller pair and the driving force transmitting means, and between the third conveying roller pair and Coupling means for freely rotating the first conveying roller pair and the third conveying roller pair only a predetermined range with respect to the driving force transmission means between the driving force transmission means, the coupling means is integrally rotated with the driving force transmission means It is fixed to the movable piece and the first and third conveying roller pairs so as to be rotatable together, and is disposed within the rotation range of the movable piece so as to be caught by the movable piece during idling of the first and third conveying roller pairs. Medium delivery device is configured to gipyeon. The first driving shaft is fixed to the first driving shaft and the second driving shaft, respectively, and is conveyed to the medium conveying path and is arranged on the conveying roller pair consisting of the main driving roller and the sub-driving roller, and the first driving shaft is fitted to the first driving shaft. Coupling means consisting of a first rotating means that can be rotated to the center, the atmosphere provided on the first drive shaft disposed within the movable range of the movable piece, the first transfer means fixed to the first drive shaft, the second drive shaft And a second transfer means fixed to the second transfer means for rotationally coupling with the first transfer means. The second transmission according to claim 5, wherein the first transmission means comprises a first gear and the first transmission means serves as a first transmission gear, and the second transmission means engages with the first transmission gear. A medium transport device, characterized in that it consists of cog wheels. 7. The roller according to claim 6, further comprising a second conveying roller pair composed of a second main driving roller and a second sub-driving roller, and arranged separately from the conveying roller pair, between the second sub-rolling roller and the sub-drive roller. A first fleece fitted to a second drive shaft and integrally rotating with a second cogwheel engaged with the first cogwheel, and a second fleece provided such that the first fleece and the second sub-drive roller can be integrally rotated; And a speed difference absorbing means constituted by an elastic belt wound around. The method of claim 1, wherein each of the sub-drive rollers 6B, 8B of the first and third drive roller pairs is smaller in hardness than the main drive rollers 6A, 8A of the first and third drive roller pairs. Easy to configure and A secondary conveying roller diameter of the first and third driving roller pairs is set to a diameter larger than the diameter larger than the diameter of the main driving roller of the first and third driving roller pairs. 9. The main drive rollers of claim 8, wherein each of the main drive rollers and the sub-drive rollers of the first and third drive roller pairs is supported by a drive shaft set between fixed shafts, respectively, to the main drive rollers of the second drive roller pair 7. And a compression moving means which is capable of moving the sub-drive rollers of the same drive roller pair and moving the compression force to the medium higher than the compression force to the recording medium generated in the first and third drive roller pairs. Media conveying device. 10. The method of claim 8 or 9, wherein the main drive rollers and the sub-drive rollers of the second drive roller pair are equal to the amount of deformation when the same compressive force as the main drive rollers of the first and third drive roller pairs is applied. And a diameter of the main and the sub-drive rollers of the second drive roller pair, having the same diameter.