WO2008047625A1

WO2008047625A1 - Media cartridge and driver for the same

Info

Publication number: WO2008047625A1
Application number: PCT/JP2007/069658
Authority: WO
Inventors: Yoshihiro Someno; Yasuyuki Hirose; Tetsuo Morimoto; Atsushi Sato
Original assignee: Alps Electric Co., Ltd.; Hitachi Maxell, Ltd.
Priority date: 2006-10-16
Filing date: 2007-10-09
Publication date: 2008-04-24
Also published as: JP2010003327A

Abstract

[PROBLEMS] To provide a media cartridge which can perform open/close operation of a shutter quickly and is suitable for miniaturization. [MEANS FOR SOLVING PROBLEMS] When a media cartridge (1A) is loaded to a loading section, the small diameter gear (5b) of a pinion gear (5) meshes a second rack (11). When a case (3) is pushed in the Y2 direction, the small diameter gear (5b) rolls the second rack (11). A large diameter gear (5a) rolls a first rack (7) provided in a shutter (6) but the shutter (6) is moved at a speed of Ra/Rb times, where the Ra/Rb is the ratio of radial dimension between the large diameter gear (5a) and the small diameter gear (5b). Consequently, the shutter (6) can be moved ahead of the case (3) and open/close operation of the shutter (6) can be performed quickly. Since a region for making the shutter (6) retreat is not required to be secured previously on the media cartridge (1A) side, the media cartridge (1A) can be miniaturized.

Description

Specification

Media cartridge and drive device thereof

Technical field

TECHNICAL FIELD [0001] The present invention relates to a media cartridge for storing an optical recording medium and the like and a driving device thereof, and more particularly, to a media cartridge having a shirter and a driving device thereof.

Background art

In Patent Documents 1 and 2, a disk-shaped medium (recording medium) is stored in a cartridge.

[0003] A cartridge is slidably provided on the cartridge. When the cartridge is inserted into the loading unit of the playback device, the shirter is held by the shirter holding member provided on the loading unit side, so that the shirter is relatively moved to the retreat area in accordance with the cartridge insertion. . At this time, the media is exposed from the opening provided in the cartridge.

Yes

Patent Document 1: JP-A-9 213053

Patent Document 2: Japanese Patent Laid-Open No. 2003-242739

Disclosure of the invention

Problems to be solved by the invention

[0004] As described above, when the medium is a disk type, the medium can be reproduced only by partially opening only the opening hidden by the shirter.

[0005] On the other hand, when the medium is not a disk type, for example, when the flat rectangular area is an optical recording medium and is a non-disk type, the shirter covers the entire surface of the medium. It becomes the structure which covers. For this reason, in such a media cartridge, it is necessary to expose the entire surface of the media, that is, to make the shirter fully open. However, when the shatter is fully opened, the travel distance of the shatter is extended, which makes it difficult to reduce the burden on the operator and the speed of the opening / closing operation is lost.

[0006] In addition, as described in Patent Document 2, a conventional opening / closing mechanism for opening and closing a shirter is configured to inertialy press a part of the shirter from the loading unit side while the cartridge is moving. in front The shirter is configured to be held between the opening / closing mechanism and the cartridge. Therefore, in order to stabilize the opening / closing operation of the shutter, it is necessary to secure a retreat area for the shirter on the force cartridge side. In the case of a non-disk type, the retraction area requires an area substantially equal to the area occupied by the medium, and thus there is a problem that it is difficult to reduce the external dimensions of the media cartridge.

[0007] The present invention is for solving the above-described conventional problems, and an object of the present invention is to provide a media cartridge capable of quickly opening and closing a shirt.

Another object of the present invention is to provide a media cartridge suitable for downsizing.

[0009] In addition, the present invention aims to provide a drive device for a media cartridge that can quickly expose almost the entire media accommodated when the media cartridge is loaded. ! /

Means for solving the problem

[0010] The present invention includes a case in which a recording medium is stored and a shirt that moves relative to the case, and the drive device is loaded in a state where the case and the shirter are closed. A media cartridge to be inserted into the section,

A moving mechanism is provided between the case and the shirter to move the other of the case and the shirter in advance when the one is pushed into the loading portion! It is characterized by this.

In the present invention, when the case is pushed in, the shirter can be moved in advance of the case. Alternatively, when the shatter is pushed in, the case can be moved ahead of the shatter. For this reason, the operator can quickly expose the recording medium (medium) stored in the media cartridge by only slightly pushing one manually. For this reason, the burden on the operator can be reduced.

[0012] In the above, the moving mechanism includes a first rack and a second rack provided along a moving direction, a large-diameter gear that rolls in contact with the first rack, and It is preferable to have a pinion gear formed with a small-diameter gear that rolls in contact with the second rack. [0013] With the above means, the moving mechanism can be configured with a simple configuration. For example, the first rack may be provided on the shirter, the second rack may be provided on the loading unit, and the pinion gear may be provided rotatably on the case.

[0014] With the above means, when the case is pushed in, the shirt can be moved in advance of the case.

[0015] Alternatively, the first rack may be provided in the case, the second rack may be provided in the loading unit, and the pinion gear may be rotatably provided in the shirter. it can.

[0016] With the above means, when the shirt is pushed in, the case can be moved ahead of the shirt.

Alternatively, the first rack is provided in the shirter, the second rack is provided in the case, and the pinion gear is rotatably provided in the loading portion. I can do it.

[0018] Also with the above means, when the case is pushed in, the shirt can be moved in advance of the case.

For example, the recording medium can be configured as an optical recording medium.

[0019] The present invention is also a drive device for a media cartridge having at least a loading section in which the media cartridge is loaded and a reproduction mechanism for reproducing the recording medium stored in the media force cartridge,

The media cartridge has a case for storing the recording medium, and a shirt that moves relative to the case.

The loading unit is provided with a moving mechanism that moves one of the case and the shirt in advance of the other when the media cartridge is pushed into the loading unit. is there.

[0020] In the present invention, it is possible to quickly open the media cartridge by slightly pushing the media cartridge loaded in the loading section, and to be a horse running device capable of exposing the media inside. it can. For example, the moving mechanism includes a pinion having a large-diameter gear that fits in a first rack formed in the case, and a small-diameter gear that fits in a second rack formed in the shirter. It can consist of gears.

[0022] In this case, it is preferable that the pinion gear is provided rotatably in the loading section.

The invention's effect

[0023] In the media cartridge of the present invention, when the cartridge is loaded in the loading section, one of the shirter and the case can be moved in advance, and therefore the opening / closing operation can be quickly performed with a force S.

[0024] Further, since the pushing amount at the time of loading can be shortened, the burden on the operator can be reduced.

[0025] In addition, since a retreat area for retracting the shirter is not required, a small-sized media cartridge can be used with force S.

[0026] Further, in the drive device for a media cartridge of the present invention, when the media cartridge is loaded, almost the entire recording medium accommodated therein can be quickly exposed.

BEST MODE FOR CARRYING OUT THE INVENTION

FIG. 1 is a partial cross-sectional view of the media cartridge according to the first embodiment of the present invention when viewed from the front, and FIG. 2 shows the operation of the media cartridge of FIG. It is sectional drawing in the II line, A shows the state immediately after inserting into the loading part, B shows the state in the middle of insertion, and C shows the state at the end of insertion.

As shown in FIG. 1, in this media cartridge 1 A, a medium (recording medium) 2 is held in a bottomed case 3.

[0029] The medium 2 is an optical recording medium (hologram) capable of recording / reproducing information using light interference phenomenon. For example, silver salt, dichromated gelatin, photopolymer, photoresist It is made of a photosensitive material made of

[0030] A through hole 3a is formed in the side surface 3A of the case 3, and a support shaft 4 extending horizontally along the X direction is passed through the through hole 3a. The support shaft 4 has a pin A two-on gear 5 is rotatably supported. The pinion gear 5 is a two-stage gear in which a large diameter gear 5a and a small diameter gear 5b are integrally formed.

A shirt 6 is provided on the upper part of the case 3. The shirt 6 is the case

3 is slidably supported by a mechanism (not shown). The movement direction of the shirter 6 is a direction orthogonal to the paper surface. On the lower surface of the shirter 6, a first rack 7A is formed extending in a direction orthogonal to the paper surface.

As shown in FIG. 1, the pinion gear 5 is provided in a space S between one side surface 6 A of the shirt 6 and the side surface 3 A of the case 3. The large-diameter gear 5a of the pinion gear 5 is meshed with the first rack 7A. For this reason, when the pinion gear 5 rotates, the shirter 6 can slide in the moving direction (Y direction) orthogonal to the paper surface.

[0033] Normally, the media cartridge 1A is set in a closed state in which the shirter 6 is closed. In this state, the media 2 is not exposed between the case 3 and the shirter 6. Is retained. For this reason, it is possible to prevent intrusion of dust and the like and damage to the surface of the media 2.

As shown in FIG. 1, the media cartridge 1 A is loaded into the loading unit 10 of the driving device for reproducing the media 2. The loading unit 10 is formed with a second rack 11A extending in the moving direction (Y direction). As shown in FIG. 2A, when the media cartridge 1A is loaded into the loading section 10, the small-diameter gear 5b of the pinion gear 5 is engaged with the second rack 11A.

[0035] As shown in FIG. 2B, when the pushing force F is applied only to the case 3 and only the case 3 is pushed in the Y2 direction, the small-diameter gear 5b of the pinion gear 5 is moved onto the second rack 11A. Roll. At this time, the shirter 6 is moved in the insertion direction on the Y2 side in the drawing prior to the case 3 by the large-diameter gear 5a.

[0036] This is based on the fact that the configuration of the pinion gear 5 is such that the radius Ra of the pitch circle of the large diameter gear 5a is larger than the radius Rb of the pitch circle of the small diameter gear 5b! /, (Ra> Rb) It is. That is, in the pinion gear 5, the rotation speed of the large-diameter gear 5a is Ra / Rb times (Ra / Rb> l) times the rotation speed of the small-diameter gear 5b. For this reason, the large gear 5a The movement speed of the shirter 6 that moves through the first rack 7A that fits with this can be made faster than the movement speed (push-in speed) of the case 3. For this reason, in the present invention, as shown in FIG. 2C, when the media cartridge 1A is inserted and only the case 3 is pushed in for a certain period of time, the moving distance of the case 3 is Ll. When the movement distance that the shirter 6 moves is L0, the force S is used to make the movement distance L0 longer than the movement distance L1.

[0037] Therefore, the shirter 6 can be largely opened by slightly pushing only the case 3 of the media cartridge 1A loaded in the loading unit 10 in the insertion direction on the Y2 side of the drawing. That is, the travel distance L0 required to fully open the shirt 6 on the case 3 is less than the travel distance L0! / The travel distance L1 can be moved so that the shirt 6 can be fully opened.

[0038] Therefore, the media cartridge 1A can be fully opened in a short time. In other words, almost the entire surface of the media 2 stored in the media cartridge 1A can be quickly exposed.

It should be noted that when ejecting the media cartridge 1A, a discharge means (not shown) provided in the loading unit 10 is used. That is, the case 3 is pushed by the discharging means (not shown) and moved in the discharging direction on the Y1 side shown.

[0040] Also at this time, the small-diameter gear 5b of the pinion gear 5 rolls on the second rack 11A provided on the loading portion 10 side in the discharging direction, and the large-diameter gear 5a is the first rack. Rolls against 7A. For this reason, the shirt 6 is closed in the Y1 side closing direction (discharge direction).

The case 3 can be moved prior to the movement.

That is, the shirt 6 can be returned to the original closed state by moving the case 3 slightly in the discharging direction. Therefore, it is possible to return the media cartridge 1A to the original closed state in a short time.

That is, in the first embodiment, the pinion gear 5, the first rack 7A, the second rack 11A force S, and the movement mechanism that moves the shirter 6 prior to the movement of the case 3 are provided. It is composed.

[0043] As shown in FIG. 2C, when the insertion of the media cartridge 1A is completed, the driving device The reproduction mechanism 20 provided on the side is moved to the upper position of the case 3. The reproduction mechanism 20 includes a light source, a collimating lens, a mirror actuator, an imaging device, and the like (all not shown). When the playback mechanism 20 is set to face the medium 2 in the case 3 and the playback light is output from the light source and a predetermined playback operation is performed, the data information recorded on the media 2 is transferred to the imaging device. It is possible to read through In the first embodiment, since the shirter 6 is moved to the back of the apparatus rather than the case 3, the reproducing mechanism 20 is arranged on the front side (Y1 side) of the apparatus.

FIG. 3 is a partial cross-sectional view of the media cartridge according to the second embodiment of the present invention as viewed from the front, and FIG. 4 shows the operation of the media cartridge of FIG. It is sectional drawing in the IV line, A is the state immediately after insertion into the loading part, B is in the middle of insertion, C shows the state at the end of insertion. The same members as those in the media force cartridge 1 A shown in the first embodiment will be described with the same reference numerals.

The media cartridge 1B shown in FIG. 3 also has a bottomed case 3 for holding the media 2 and a case.

It has a shirt 6 that covers the top of 3. The media 2 is the same as in the first embodiment.

[0046] At the upper end of the side surface 3A of the case 3, a rack portion 3B extending horizontally (L-shaped in cross section) in the XI direction shown in the figure is formed in a body. A first rack 7B formed along a moving direction (Y direction) orthogonal to the paper surface is provided on the lower surface (Z2 side surface) of the rack portion 3B.

[0047] The shirter 6 is configured to be slidable relative to the case 3 by a mechanism (not shown). The direction of the slide is a moving direction (Y direction) orthogonal to the paper surface.

[0048] The width dimension of the shirter 6 in the X direction is wider than that of the case 3. The side surface 6A of the shirter 6 is bent in the Z2 direction shown in the figure, and a space S is provided at a portion where the side surface 6A and the side surface 3A of the case 3 face each other.

[0049] A support shaft 4 extending horizontally in the space S along the X2 direction in the drawing is fixed to the side surface 6A of the shirter 6. A pinion gear 5 is rotatably supported on the support shaft 4 and in the space S. The pinion gear 5 is a large-diameter gear 5 This is a two-stage gear in which a and the small-diameter gear 5b are integrally formed. As in the first embodiment, the radius Ra of the pitch circle of the large diameter gear 5a constituting the pinion gear 5 is larger than the radius Rb of the pitch circle of the small diameter gear 5b! /, (Ra> Rb) .

[0050] As shown in FIG. 3, the large-diameter gear 5a is fitted into the first rack 7B.

Therefore, when the pinion gear 5 rotates, the large-diameter gear 5a rolls on the first rack 7B. At this time, the case 3 and the shirt 6 are relatively moved in the moving direction (Y direction) orthogonal to the paper surface.

[0051] As shown in FIG. 3 and FIG. 4A, the media cartridge 1B is loaded at a predetermined position on the loading unit 10 of the driving device. At this time, as in the first embodiment, the small-diameter gear 5b of the pinion gear 5 is swept into the second rack 11A provided in the force loading section 10.

Here, as shown in FIG. 4B, when the pressing force F is applied only to the shirter 6 and the shirter 6 is pushed in the insertion direction (Y2 direction), the pinion gear 5 is moved to the small-diameter gear 5b. Is moved in the insertion direction while rolling on the second rack 11A. At this time, the rotation speed of the large-diameter gear 5a of the pinion gear 5 is Ra / Rb times (Ra / Rb> 1) than that of the small-diameter gear 5b.

[0053] Therefore, the first rack 7B formed in the rack portion 3B of the case 3 can be moved in the insertion direction (Y2 direction) at a moving speed faster than the moving speed at the time of pushing. The Therefore, the case 3 is moved in the insertion direction on the Y2 side in the drawing prior to the movement of the shirter 6 by the large-diameter gear 5a.

[0054] Then, as shown in FIG. 4C, the case 3 is greatly moved by merely moving the shirter 6 of the media cartridge 1B loaded in the loading unit 10 in the insertion direction on the Y2 side in the figure. It is possible to expose almost the entire surface of the media 2 provided inside the case 3.

[0055] That is, in the second embodiment, the pinion gear 5, the first rack 7B, the second rack 11A force S, and the movement mechanism that moves the case 3 prior to the movement of the shirter 6 are provided. It is composed.

[0056] In the media cartridge 1B, the shirt is also ejected in the same manner as described above. The force S can be moved S in the closing direction (discharge direction) of the case 3 prior to the movement in the discharge direction (Y1 direction). For this reason, it is possible to return the media cartridge 1B to the original closed state in a short time even at the time of ejection.

[0057] As shown in FIG. 4C, when the insertion of the media cartridge 1B is completed, the reproducing mechanism 20 provided on the drive device side is moved to the upper position of the case 3. Then, the playback mechanism 20 is set to face the media 2 in the case 3 and a predetermined playback operation such as playback light emission is performed, so that the data information recorded on the media 2 can be read. Done. In the second embodiment, since the case 3 is moved to the back of the apparatus rather than the shirt 6, the reproduction mechanism 20 is provided on the back of the apparatus (Y2 side).

[0058] FIG. 5 is a partial cross-sectional view of the media cartridge according to the third embodiment of the present invention as viewed from the front, and FIG. 6 is a VI-VI line in FIG. It is a cross-sectional view in which A is a state immediately after insertion into the loading section, B is a state during insertion, and C is a state at the end of insertion. The same members as those in the media cartridges 1A and 1B shown in the first and second embodiments will be described with the same reference numerals.

As shown in FIG. 5, the media cartridge 1C shown in the third embodiment also has a bottomed case 3 that holds the media 2 and a shirter 6 that covers the top surface portion of the case 3. Yes. The medium 2 is the same as in the first and second embodiments.

[0060] The shirter 6 is configured to be slidable relative to the case 3 by a mechanism (not shown). The direction of the slide is a moving direction (Y direction) orthogonal to the paper surface.

As shown in FIG. 5, the width dimension of the shirter 6 in the X direction is wider than that of the case 3. A first rack 7C extending in the movement direction (Y direction) orthogonal to the paper surface is formed on the lower surface of the shirter 6 and at a position protruding from the case 3 in the XI direction.

[0062] At the upper end of the side surface 3A of the case 3, a rack portion 3B extending horizontally (L-shaped cross section) in the XI direction shown in the figure is formed in a body. A second rack 11C extending in the moving direction (Y direction) perpendicular to the paper surface is formed on the lower surface (Z2 side surface) of the rack portion 3B. [0063] On the other hand, the loading unit 10 on the drive device side for reproducing the media 2 is provided with a support unit 10a. A holding hole 10b is formed in the support portion 10a, and a pinion gear 5 is provided in the holding hole 10b. The pinion gear 5 is a two-stage gear in which a large-diameter gear 5a and a small-diameter gear 5b are integrally formed. In the third embodiment, a support shaft 4 is formed in a body at the center of the pinion gear 5. Yes. The pinion gear is rotatably supported by passing the support shaft 4 through the holding hole 1 Ob. As in the first and second embodiments, the radius Ra of the pitch circle of the large diameter gear 5a constituting the pinion gear 5 is larger than the radius Rb of the pitch circle of the small diameter gear 5b (Ra> Rb). .

Next, the operation of the media cartridge 1C will be described.

As shown in FIG. 5 and FIG. 6A, the media cartridge 1C is loaded at a predetermined position on the loading unit 10 of the driving device. At this time, the large-diameter gear 5a of the pinion gear 5 meshes with the first rack 7C, and the small-diameter gear 5b meshes with the second rack 11C.

[0065] As shown in FIG. 6B, when the pressing force F is applied only to the case 3 and the shirter 6 is pushed in the insertion direction (Y2 direction), the small-diameter gear 5ba is moved into the second rack 11C. Roll together on the second rack 11C. At the same time, the large-diameter gear 5a is caught in the first rack 7C and rolls on the first rack 7C. Thereby, the case 3 and the shirter 6 are moved in the moving direction (Y2 direction) orthogonal to the paper surface.

However, a speed difference based on the dimensional difference between the radii Ra and Rb is generated between the rotational speed of the large-diameter gear 5a and the rotational speed of the small-diameter gear 5b. That is, the rotation speed of the large-diameter gear 5a is Ra / Rb times (Ra / Rb> l) that of the small-diameter gear 5b. Therefore, the force S can be moved S in the insertion direction (Y2 direction) at a moving speed faster than the moving speed at the time of pushing, that is, faster than the case 3! Therefore, the force S is used to move the shirt 6 in the insertion direction on the Y2 side in the drawing prior to the movement of the case 3.

[0067] As shown in FIG. 6C, the presser 3 is moved by moving the case 3 of the media cartridge 1C loaded in the loading unit 10 by a predetermined distance in the insertion direction on the Y2 side in the drawing. It can be moved a long distance, and almost the entire surface of the media 2 provided in the case 3 is exposed. Use force S.

That is, in the third embodiment, the pinion gear 5 having the large-diameter gear 5a and the small-diameter gear 5b, the first rack 7C, and the second rack 11C force. The moving mechanism is configured to move prior to the movement.

[0069] Also, in the media cartridge 1C, when ejecting in the same manner as described above, the shirter 6 is moved in the closing direction (discharging direction) prior to the movement of the case 3 in the discharging direction (Y1 direction). That power S. Therefore, it is possible to return the media cartridge 1B to the original closed state in a short time, and it is possible to take out the media cartridge 1C with the shirter 6 closed at the time of ejection.

[0070] As shown in FIG. 6C, in the third embodiment, as in the first embodiment, when the insertion of the media cartridge 1C is completed, the loading portion 10 is moved to the front side. The provided regeneration mechanism 20 is moved to the upper position of the case 3. Then, the reproduction mechanism 20 is installed in a state facing the medium 2 in the case 3, and a predetermined reproduction operation such as emission of reproduction light is performed, whereby the data information recorded on the medium 2 is read.

[0071] In the third embodiment, since the case 3 is moved to the back of the apparatus rather than the shirter 6, the reproduction mechanism 20 is located in front of the apparatus as in the first embodiment. On the side (Y1 side).

[0072] As described above, in the media cartridges 1A, IB, 1C of the present invention, when the operator manually pushes the media cartridges 1A, IB, 1C into the loading unit 10, one of the case 3 and the shirter 6 is Can be moved in advance with respect to the other. For this reason, the force S can be moved by simply pushing one of the case 3 or the shirt 6 slightly. Therefore, the opening / closing operation between the case 3 and the shirt 6 can be performed quickly. For this reason, it is possible to reduce the burden given to the operator.

[0073] Further, the present invention does not have a configuration in which the shatter is held by the opening / closing mechanism during the movement of the cartridge as in the prior art. Therefore, it is necessary to secure a retreat area for retreating the shatter in advance on the media cartridge side. There is no. Therefore, the media cartridges 1A, IB, 1C can be reduced in size.

[0074] It should be noted that the radius Ra of the pitch circle of the large-diameter gear 5a constituting the pinion gear 5 and the front The speed of the opening / closing operation of the case 3 or the shirt 6 can be changed to a desired speed by changing the setting of the radial dimension ratio Ra / Rb with the radius Rb of the pitch circle of the small diameter gear 5b.

Brief Description of Drawings

FIG. 1 is a partial cross-sectional view of a media cartridge as a first embodiment of the present invention when viewed from the front.

[Fig. 2] Cross-sectional view taken along line II-II in Fig. 1 showing the operation of the media cartridge step by step. A is the state immediately after insertion into the loading section, B is in the middle of insertion, and C is the end of insertion. FIG. 3 is a partial cross-sectional view of the media cartridge according to the second embodiment of the present invention as viewed from the front,

[Fig. 4] Sectional view taken along line IV—IV in Fig. 3 showing the operation of the media cartridge step by step. A is the state immediately after insertion into the loading section, B is in the middle of insertion, and C is the end of insertion. State of time

FIG. 5 is a partial cross-sectional view of a media cartridge as a third embodiment of the present invention when viewed from the front.

[Fig. 6] Sectional view taken along line VI-VI in Fig. 5 showing the operation of the media cartridge step by step. A is the state immediately after insertion into the loading section, B is in the middle of insertion, and C is the end of insertion. State of time Explanation of sign

[0076] 1A, 1B media cartridge

2 media (recording media)

3 cases

4 Support shaft

5 Pinion gear

5a Large diameter trouble table

5b / J Infinity Car

6 A Side of the shirt 7A, 7B, 7C 1st rack 10 Loading unit 11A, 11C 2nd rack 20 Regeneration mechanism

Ra Radius of pitch circle of large-diameter gear Rb Radius of pitch circle of small-diameter gear Ra / Rb Diameter to dimension ratio

Claims

The scope of the claims

A case in which a recording medium is stored; and a shirter that moves relative to the case; and the case and the shirter are closed in a loading portion of the driving device.

A moving mechanism is provided between the case and the shirter so that when one of the case or the shirter is pushed into the mounting portion, the other moves before the one. Media cartridge.

[2] The moving mechanism includes a first rack and a second rack provided along a moving direction, a large-diameter gear that rolls in contact with the first rack, and the second rack. 2. A media cartridge according to claim 1, further comprising a pinion gear formed with a small-diameter gear that rolls by rolling.

[3] The media cartridge according to claim 2, wherein the first rack is provided on the shirt, the second rack is provided on the loading section, and the pinion gear is rotatably provided on the case.

[4] The media cartridge according to claim 2, wherein the first rack is provided in the case, the second rack is provided in the loading section, and the pinion gear is rotatably provided in the shirter. .

5. The media cartridge according to claim 2, wherein the first rack is provided in the shirter, the second rack is provided in the case, and the pinion gear is rotatably provided in the loading portion.

6. The media cartridge according to claim 1, wherein the recording medium is an optical recording medium.

[7] A drive device for a media cartridge having at least a loading section in which the media cartridge is loaded and a playback mechanism for playing back a recording medium stored in the media cartridge,

In the loading unit, when the media cartridge is pushed into the loading unit, A drive mechanism for a media cartridge, characterized in that a moving mechanism is provided for moving one of the case and the shirt before the other.

[8] The moving mechanism is a pinion gear having a large-diameter gear that meshes with a first rack formed in the case and a small-diameter gear that meshes with a second rack formed in the shirter. The drive device for a media cartridge according to claim 7.

9. The drive device for a media cartridge according to claim 8, wherein the pinion gear is rotatably provided in the loading portion.