JP2006127557A - Cartridge - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve such a problem that a cartridge housing single-sided recordable/reproducible optical disk and a cartridge housing a double-sided recordable/reproducible optical disk are expensive due to different specifications. <P>SOLUTION: A cartridge 1 is same basically as a format of the cartridge for the double-sided recordable/reproducible optical disk, and is provided with a recording propriety identifier 10a for one side of information layer in a cartridge housing the double-sided recordable/reproducible optical disk and a single-sided recording identification hole 10b for the other side information layer and a recording propriety detecting part of the optical disk apparatus detects a recording forbidden identification hole 10b. Thereby, it can be recognized that an optical disk housed in the cartridge 1 has single sided specifications. When the cartridge 1 is applied to the double-sided recordable/reproducible optical disk, it can be coped with by changing a metalic mold of only the single-sided recording identification hole 10b, the cartridge becomes inexpensive. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a cartridge for storing a disc-shaped recording / reproducing medium.

  There are two types of optical disks: a read-only optical disk and a rewritable optical disk stored in a cartridge case. Then, there is a demand for reproducing the rewritable optical disk with a read-only optical disk device, and a cartridge capable of taking out the disk has been proposed. An example of a conventional cartridge from which a disk can be taken out is described in Patent Document 1. FIG. 5 is a plan view of a conventional cartridge from which a disc can be taken out, FIG. 6 is an enlarged view of a claw portion of the cartridge, and FIG. 7 is a plan view showing a step of taking out the disc from the cartridge. 5 and 6, a cartridge 101 contains a disk 102 therein, and includes a cartridge body 103 and an opening / closing lid 104. An opening window 105 through which the disk 102 can be exposed is formed in the cartridge body 103, and the opening window 105 is closed by a shutter 106 that can be opened and closed. When the cartridge 101 is mounted on the optical disc apparatus, the shutter 106 automatically moves so that the opening window 105 is exposed. The cartridge body 103 is provided with an opening 107 for taking out the disk 102. The opening / closing lid 104 covers the opening 107, and one end of the opening / closing lid 104 is attached to be rotatable about a rotation shaft 108 formed in the cartridge main body 103. The other end of the opening / closing lid 104 has an engaging portion 109, and the engaging portion 109 engages with the engaged portion 110 of the cartridge main body 103 so that the opening 107 is covered with the opening / closing lid 104. It is configured. The claw portion 111 formed in the cartridge main body 103 has a function of an instruction portion that indicates whether or not the disc 102 has been taken out by engaging with a detector provided in the optical disc apparatus. Several portions of the claw portion 111 are connected to the cartridge main body 103 by the connection portion 112, and are fitted to a groove portion 113 provided on the opening / closing lid 104. Therefore, in a normal use state, unless the connecting portion 112 is cut and the claw portion 111 is removed from the cartridge body 103, the opening / closing lid 104 cannot be rotated and the optical disk 102 cannot be taken out. Further, the opening / closing lid 104 is provided with a recording prohibition identification hole 114 having a movable element 115 that allows the user to select whether recording is possible or prohibition of recording. For example, recording is possible when the mover 115 closes the recording prohibition identification hole 114, and recording is prohibited when the movable element 115 is not closed.

  The disc removal procedure will be described with reference to FIG. From the initial state of (a), after cutting the connecting portion 112 and removing the claw portion 111 to the state of (b), the opening / closing lid 104 is rotated around the rotation shaft 108 to the state of (c). Then, the disk 102 is taken out. When the disk 102 is taken out once, the claw portion 111 disappears, so that the user can identify whether or not the disk has been taken out. In addition, by detecting the presence / absence of the claw portion 111 by the optical disc apparatus which is a signal recording device, an appropriate recording method for the disc can be set. For example, when there is a risk of fingerprints or dust adhering when the disc is removed from the cartridge, recording on the disc is possible when there is a claw portion 111, but when there is no claw portion 111, For example, even if the recording prohibition identification hole 114 is in a recordable state, it is possible to perform processing such as recording prohibition or recording on a disk after defect inspection.

  The need for this removable cartridge has been accelerated by the release of a DVD recorder and has become the mainstream of current disk cartridges. With the technique disclosed in Patent Document 1, it is possible to take out the optical disk 102 stored in the cartridge 101. Further, by detecting the possibility that the optical disk 102 has been taken out and performing the recording operation prohibition or defect detection with the optical disk device, the reliability of recording on the optical disk 102 can be ensured.

  However, the optical disk 102 accommodated in the cartridge 101 described with reference to FIGS. 5 to 7 is both a single-sided recording / reproducing optical disk having an information layer only on one side even when a double-sided recording / reproducing optical disk having information layers on both sides of the substrate is applied. Is required to be applicable. As a cartridge for storing a 4.7 GB DVD-RAM disk for single-sided recording / reproducing, for example, the type shown in FIG. 3 is known. 3A is a plan view of the cartridge 21 containing the single-sided recording / reproducing optical disc 200, and FIG. 3B is a plan view showing how the single-sided recording / reproducing optical disc 200 is taken out from the cartridge 21. The cartridge 21 houses the optical disc 200 in a gap between a pair of plate portions 22a and a plate portion (not shown) (hereinafter referred to as a plate portion 23b), and the gap is defined by the side walls 23a and 23b. One wall surface connecting the side walls 23 a and 23 b is provided with an opening / closing lid 24 that rotates around the rotation shaft 23 a, and a shutter 25 is provided via plate portions 23 a and 23 b of the opening / closing lid 24. The shutter 25 is provided in the plate portions 22 a and 22 b and opens and closes an opening window 29 that exposes a part of the information layer of the optical disc 200. Further, the side walls 23a and 23b are provided with a pair of gripper slots 26a and 26b that are recessed in the shape of the optical disc 200, and auto loading hooks (also referred to as auto loading detents) 27a and 27b are provided on the shutter 25 side. Prepare to sink into the 200 side. The protrusions of the optical disk device (not shown) are fitted into the recessed portions of the gripper slots 26a and 26b, thereby positioning the cartridge 21. The open / close lid 24 is provided with a recording prohibition identifier 28a for identifying whether recording is possible or impossible on the information layer of the optical disc 200 with a slide switch, and a hole is opened by a detection convex portion provided on a tray of an optical disc apparatus (not shown). In general, it is detected that recording is impossible by entering the hole, and when the hole is blocked, it is detected that recording is possible because the hole does not enter the hole. Further, the opening / closing lid 24 is provided with a claw 30a in between, and the claw 30a is engaged with the plate portions 22a and 22b and the opening / closing lid 24, so that the opening / closing lid 24 is prevented from rotating around the rotation shaft 24a. However, the optical disk 200 cannot be taken out from the cartridge 21, but the opening / closing lid 24 can be rotated around the rotation shaft 24a by removing the claw 30a and forming the hole 30b as shown in FIG. 3B. The optical disc 200 can be taken out.

  Since the optical disc 200 accommodated in the cartridge 21 shown in FIGS. 3A and 3B is a single-sided recording / reproducing disc, the information layer recorded / reproduced by the optical pickup of the optical disc device (not shown) faces the plate portion 22b. The surface of the optical disc 200 facing the surface 22a is subjected to a process that cannot be recorded even if a label or an information layer is provided (for example, a process in which information cannot be read in the lead-in area on the inner periphery of the optical disc 200). The gripper slots 26a and 26b of the cartridge 21 and the plate portion 22a side on the autoloading hooks 27a and 27b are arranged as shown in the figure so that the user does not accidentally irradiate the unrecordable surface with the pickup of the optical disk device. By adopting a configuration in which the depressed portion is covered with the portion 22a, erroneous mounting is suppressed. As described above, since the optical disk 200 is a single-sided recording / reproducing optical disk, only the recording prohibition identifier 28a is provided.

  On the other hand, in particular, for use in recording moving image video / audio signals such as a DVD recorder, it is often insufficient to use only one side, so that it is required to support a double-sided recording / reproducing disc. As a cartridge for a double-sided recording / reproducing disk, for example, the type shown in FIG. 4 is known. 4A is a plan view of the cartridge 31 containing the double-sided recording / reproducing optical disk 300, and FIG. 4B is a plan view showing the state where the double-sided recording / reproducing optical disk 300 is removed from the cartridge 31. The cartridge 31 houses the optical disc 300 in a gap between a pair of plate portions 32a and a plate portion (not shown) (hereinafter referred to as a plate portion 33b), and the gap is defined by the side walls 33a and 33b. One wall surface connecting the side walls 33a and 33b is provided with an opening / closing lid 34 that rotates about the rotation shaft 33a, and a shutter 35 is provided via plate portions 33a and 33b of the opening / closing lid 34. The shutter 35 is provided in the plate portions 32 a and 32 b and opens and closes an opening window 39 that exposes a part of the information layer of the optical disc 300. Further, the side walls 33a and 33b are provided with a pair of gripper slots 36a and 36b that are recessed in the optical disc 300 side, and auto loading hooks 37a and 37b are provided in the shutter 35 side that are recessed in the optical disc 300 side. The protrusions of the optical disk device (not shown) are fitted into the recessed portions of the gripper slots 36a and 36b, thereby positioning the cartridge 31. The open / close lid 34 is provided with recording prohibition identifiers 38a and 38b for identifying whether recording is possible or impossible on the information layer of the optical disc 300 by a slide switch, and a hole is opened by a detection convex portion provided on a tray of an optical disc apparatus (not shown). If the hole is closed, it is generally detected that recording is impossible, and if the hole is blocked, it is detected that recording is possible because the hole does not enter. Further, the opening / closing lid 34 is provided with a claw 40a in between, and the claw 40a is engaged with the plate portions 32a and 32b and the opening / closing lid 34, so that the opening / closing lid 34 is prevented from rotating around the rotation shaft 34a. However, although the optical disk 300 cannot be removed from the cartridge 31, the opening / closing lid 34 can be rotated around the rotation shaft 34a by removing the claw 40a and forming the hole 40b as shown in FIG. 4B. The optical disk 300 can be taken out.

  Since the optical disk 300 accommodated in the cartridge 31 shown in FIGS. 4A and 4B is a double-sided recording / reproducing disk, the information layer recorded / reproduced by the optical pickup of the optical disk apparatus when mounted on an optical disk apparatus (not shown) in the state shown in FIG. When recording and reproducing the surface of the optical disc 300 that faces the plate portion 32b and faces the plate portion 32a, the cartridge 31 is reversed from the state shown in FIG. Accordingly, since the cartridge 31 is used both front and back, unlike the cartridge 21, the gripper slots 36a and 36b of the cartridge 31 and the side walls 33a and 33b of the autoloading hooks 37a and 37b are arranged on the plate portion 32a side and the plate portion 32b as shown in the figure. Both sides are cut off. Since the optical disc 300 is a double-sided recording / reproducing optical disc as described above, the recording prohibition identifiers are also provided with 28a and 28b.

Thus, the cartridge 21 is used as the cartridge applied to the single-sided recording / reproducing optical disc 200, the cartridge 31 is used as the cartridge applied to the double-sided recording / reproducing optical disc 300, and the cartridge 21 cannot be mounted on the optical disc apparatus. Since the optical pickup tries to follow the non-recording / reproducing surface of 200 and cannot follow, an error can be suppressed, and the cartridge 31 can be turned upside down to be mounted on the optical disk device, so that the information layer provided on both surfaces of the optical disk 300 can be provided. On the other hand, it can be recorded and reproduced properly. Further, since both the cartridges 21 and 31 are provided with the recording prohibition identifiers 28a, 38a, and 38b, for example, it is possible to suppress dissipation due to overwriting of important data. The possibility that the optical disk 200 or 300 has been removed from the cartridge 21 or 31 can also be detected, and the recording characteristics of the optical disk 200 or 300 can be guaranteed.
Japanese Patent Laid-Open No. 9-045032

  In recent years, with the widespread use of DVD drives (so-called optical disk devices) used as DVD recorders and / or computer terminals, recordable DVD disks (hereinafter referred to as DVD disks) used are also required to be diversified and inexpensive. Diversification requires a single-sided recording / reproducing optical disc or a double-sided recording / reproducing optical disc depending on the capacity of the user information signal to be recorded. As described above, there is a dedicated cartridge 21 as the single-sided recording / reproducing optical disc 200, and a dedicated cartridge 31 as the double-sided recording / reproducing optical disc 300. However, as a manufacturer of manufacturing and selling DVD discs, each dedicated cartridge requires a die. Yes, as is well known, the mold is expensive and it takes a long time to change the mold. Therefore, a dedicated cartridge mold is provided, and time loss due to frequent mold change is taken into consideration. In addition, it is required from the DVD disk manufacturing side that the cartridge 31 for the double-sided recording / reproducing optical disk 300 is also applied to the single-sided recording / reproducing optical disk 200.

  However, when the single-sided recording / reproducing disc 200 is housed in the cartridge 31, it can be mounted on the optical disc apparatus even if the cartridge 31 is turned upside down as described above. The user is required to wait uselessly until it is recognized that recording or reproduction is impossible and an alarm is issued. For example, when the double-sided recording / reproducing optical disc 300 is stored in the cartridge 31 as a single-sided specification, the lead-in area Since an error or the like is generated only after reading information recorded in advance that cannot be recorded / reproduced, the user is required to wait for a long time. In the case where the double-sided recording / reproducing optical disc 300 is stored in the cartridge 31 as a single-sided specification, recording a certain signal in the lead-in area and / or the data area on the information layer side where recording / reproduction is impossible is performed by the DVD disk manufacturer. Since it is left to autonomy, an information layer that cannot be recorded / reproduced must be clearly recognized by the optical disc apparatus. Further, since the cartridge 31 is originally used for the double-sided recording / reproducing optical disc 300, the risk of causing a fatal defect in which important user data is erased and overwritten especially when the unrecordable information is erroneously recognized is avoided. There is a need to.

  SUMMARY OF THE INVENTION In view of the above problems, the present invention provides an inexpensive cartridge for a single-side recording / reproducing optical disc that can accurately recognize only the recordable surface of a single-sided recording / reproducing disc and that has a basic die configuration in common. For the purpose.

  The cartridge according to the present invention includes a data storage area for storing a disk-shaped recording medium having a data area for recording / reproducing a user data signal and a lead-in area in which information indicating data attribution is recorded on the inner periphery of the data area; A pair of substantially rectangular plate portions forming a medium storage portion; a pair of side walls defining a gap corresponding to the height of the medium storage portion; and the disk-shaped recording medium from the medium storage portion to the outside An opening / closing lid that opens and closes the take-out port, an opening that exposes part of the disk-shaped recording medium, a shutter member that opens and closes the opening, and a pair of side walls on the opening / closing lid side. A pair of gripper slot portions recessed into the disc-shaped recording medium side in a concave shape, and a pair of autoloadings recessed into the disc-shaped recording medium side in a substantially triangular shape on the shutter member side of the pair of side walls A hooking portion, a claw portion for releasing the opening / closing lid and identifying the possibility that the disc-shaped recording medium has been taken out from the medium storage portion, and a recording propriety setting portion for setting whether or not recording to the disc-shaped recording medium is possible The disc-shaped recording medium housed in the medium housing portion is a one-sided recording medium having an information layer that can be recorded only on one side, and the recording that sets whether or not recording is possible for the recordable information layer It has a configuration in which a single-sided recording identification hole for identifying a single-sided recording medium is formed on a surface facing the recordable information layer via a substrate of the disc-shaped recording medium.

  Since the cartridge of the present invention has the above-described configuration, the single-sided recordable / reproducible information medium can be accurately detected by the optical disc apparatus, for example, quickly without reading unrecordable information recorded in advance in the lead-in area and / or data area. Since the determination can be made, the user is not forced to waste time, and the user data recorded on the information medium can be prevented from being erroneously overwritten to damage the user data. Furthermore, since a cartridge capable of realizing the above-described effects can be manufactured at a low cost, the cost of the recordable information medium can be reduced.

  Next, the best mode of the cartridge of the present invention will be described in detail. FIG. 1 is a plan view showing the configuration of an embodiment of the cartridge of the present invention. FIG. 1 (a) is a plan view in which a first surface, usually referred to as A-side of a disk, is on the lower side of the cartridge, and FIG. It is the top view which made the 2nd surface called the B surface of a disk the lower side of the cartridge. In the figure, reference numeral 1 denotes cartridges 2a and 2b, which are substantially rectangular plate portions that form a medium storage portion for storing an optical disk (not shown), and 3a and 3b define the gap between the plate portions 2a and 2b to be substantially the height of the medium storage portion. A pair of side walls, 4 is an opening / closing lid for opening / closing an outlet for taking out the optical disk stored in the medium storage unit from the medium storage unit, 4a is a pivot shaft for rotating the opening / closing lid 4, and 5 is provided on the plate portions 2a and 2b. A shutter member that opens and closes the opening (see FIGS. 3A and 4A), 6a and 6b are a pair of gripper slots that are recessed from the surfaces of the side walls 3a and 3b on the opening / closing lid 4 side, and 7a and 7b are the shutter member 5 side Are a pair of autoloading hooks that are recessed in a substantially triangular shape from the surfaces of the side walls 3a and 3b. 8a to 8d are holes for positioning the cartridge 1 in the tray by inserting an alignment pin provided in an optical disk device (not shown), and 8a and 8c are rectangular shapes parallel to the opening / closing lid 4 and a pair of short sides are half-finished. A so-called long hole having a circular shape is generally referred to as an alignment hole, and 8b and 8d are circular holes and generally referred to as location holes. The alignment holes 8a and 8c and the location holes 8b and 8d may be through holes or non-through holes having a predetermined depth (for example, 1.2 mm or more) in which the alignment pins are buried. Reference numeral 9 denotes a claw portion that indicates a history of the possibility that the optical disk has been taken out from the medium storage portion once. Generally, the claw portion 9 recognizes the claw portion 9 in the state of the plate portion 2a or 2b ((a) in the figure). Therefore, it is detected that there is no history of taking out when the plate portion 2b is substantially flush with the plate portion 2b). In the present embodiment described below, it is assumed that the recording medium stored in the cartridge 1 can record only the A side, and the B side opposite to the A side cannot be recorded. Reference numeral 10a denotes a recording enable / disable setting unit for setting recording enable / disable on the A side of the optical disc. For example, as shown in FIG. 6, a recording prohibition identification hole (also referred to as a write prohibition hole) is slid by a mover to set recording enable / disable. In the same manner as the normal claw portion 9, the state in which the recordable hole is formed substantially in the same state as the plate portion 2b is defined as the unrecordable state. Reference numeral 10b denotes a single-sided recording identification hole for identifying a single-sided recording disk which can record and reproduce only the A side of the optical disk and cannot record and reproduce the B side, in other words, can record and reproduce only the A side.

  An optical disk apparatus that records and reproduces an information medium stored in a cartridge 1 generally has a motor for rotating the information medium stored in the cartridge 1 and a user information signal to the information medium. A tray for loading the cartridge 1 to a position where it engages with the pickup is applied. The tray includes an alignment pin that engages with the alignment hole 8a and the location hole 8b or the alignment hole 8c and the location hole 8d, and a protrusion that engages with the pair of gripper slots 6a and 6b. Positioning of the cartridge 1 and the tray placed by the alignment pins and protrusions is performed. The optical disk apparatus detects the presence / absence of the cartridge 1 and the state of the information medium stored in the cartridge 1 when the shutter member 5 is on the upper side as shown in FIG. It is a mounting surface. That is, the state of the information layer of the disc-shaped recording medium is described on the plate portion of the cartridge 1 facing the information layer. In the state of FIG. 1A, the plate portion 2b shown in FIG. The optical disk device detects the claw portion 9 and the recordability setting portion 10a at the right corner of the drawing. In the figure, since the record enable / disable setting unit 10a is set to be recordable, the optical disc apparatus recognizes that recording is permitted on the information layer A surface facing the optical pickup in the state shown in FIG. When the record enable / disable setting unit 10a is depressed from the plate unit 2b by the slider as described with reference to FIGS. 5 and 6, for example, the optical disc apparatus recognizes that recording is impossible and performs only the reproduction operation without performing the recording operation. . Further, since the claw portion 9 is substantially flush with the surface of the plate portion 2b, it is recognized that the disc-shaped recording medium accommodated in the cartridge 1 has not been taken out, and user information is stored in the information layer of the disc-shaped recording medium. When recording a signal, recording is started by a normal recording operation. On the other hand, when the claw portion 9 is removed and is depressed from the surface of the plate portion 2b, even if the disk-shaped recording medium actually stored in the cartridge 1 is not taken out from the medium storage portion, the information layer of the disk-shaped recording medium The recording operation is performed after detecting the presence or absence of defects.

  With respect to the disc-shaped recording medium accommodated in the cartridge 1, the B-side that cannot record and reproduce information signals is prevented from being blocked by the user with the single-sided recording identification hole 10b on the plate portion 2a facing the B-side. Since it is opened in advance, the optical disc apparatus detects the single-sided recording identification hole 10b, so that, for example, a recording operation or a reproducing operation is not performed on a label surface or a surface that cannot be recorded for some reason. Accordingly, the gripper slots 6a and 6b and the auto loading hooks 7a and 7b have the same shape as the cartridge 31 corresponding to the double-sided recording shown in FIG. At least when loading of the cartridge 1 into the optical disk apparatus is completed, it can be recognized that a single-sided recordable disk is stored in the cartridge 1 and that recording and reproduction cannot be performed on the B side. For example, even in the case of a disk-shaped recording medium in which information that cannot be recorded in the lead-in area and / or the data area is described in advance, it is possible to shorten the time required to issue a warning that reading is impossible. From loading completion of cartridge 1 to reading by optical pickup It is that the time required is shortened. Since the surface state of the disk-shaped recording medium is detected at one corner of the plate portion 2a or 2b facing the surface as described above, the single-sided recording identification hole 10b is similar to the recording permission / inhibition setting portion 10a. May penetrate to the plate portion 2b. As described above, it is preferable that the optical disc apparatus includes an algorithm or a mechanism that prohibits both the recording operation and the reproducing operation when the single-side recording identification hole 10b is detected. Further, for example, as shown in FIG. 1, the single-sided recording identification hole 10b can be provided on the side wall 3b side with respect to the recording availability setting portion 10a so as not to engage with the recording availability setting portion 10a. In particular, since the position of the single-sided recording identification hole 10b shown in FIG. 1 is provided on the side wall 33b rather than the recording enable / disable setting unit 38 in the double-sided cartridge 31 of FIG. Since it is an empty space, the single-sided record identification hole 10b can be drilled without any trouble.

  Depending on the center position of the single-sided recording identification hole 10b and / or its diameter, the single-sided recording identification hole 10b and the recording availability setting unit 10a may be erroneously detected because they are close to the recording availability setting unit 10a. In the present embodiment, as shown in FIG. 1, since both the single-sided recording identification hole 10b and the recording enable / disable setting unit 10a do not penetrate to the opposing plate portions 2a and 2b, the influence is small. There is a high possibility of false detection.

On the other hand, various dimensions of the cartridge 1 are defined by, for example, JISX6244 using the center point of the location holes 8b and 8d as a reference point, and the position of the center point of the recording enable / disable setting unit 10a is also defined by using the location hole 8d as a reference. ing. FIG. 2 shows an enlarged view of the vicinity of the location hole 8b and the single-sided recording identification hole 10b of the same embodiment. For reference, the virtual position of the record enable / disable setting unit 10a is also indicated by a broken line. In the following description, the shutter 5 side is up, the open / close lid 4 side is down, and the right side wall of the plate portion 2a is 3b. The location hole 8b is the above-mentioned standard, and the distance L ₁ parallel to the right side wall 3b from the opening / closing lid 4 is 22.8 mm or more and 23.2 mm or less, and the distance L ₂ parallel to the opening / closing lid 4 from the right side wall 3b is 11.0 mm or more. It is defined as a circular hole having a center point in a range of 11.4 mm or less and having a diameter of 4.00 mm to 4.05 mm as the center point. Further, in the recording availability setting unit 10a is the standard location distance L ₃ parallel to the right side wall 3b from the center point of the hole 8b is 18.3mm above 18.7mm or less parallel to the opening and closing lid 4 from the center point of the location hole 8b The distance L _{5 in the} direction of the left side wall 3a (see FIG. 1 (a)) has a center point in the range of 8.8 mm to 9.2 mm, and a depth of 5.0 mm having a diameter of 3.0 mm or more from the center point. These are defined as circular holes. By the way, although it is preferable in terms of the circuit configuration and the like that the detection sensor is provided in the vicinity of the recording enable / disable detecting projection or the like (provided in the optical disc device not shown) that fits in the circular hole of the recording enable / disable setting portion 10a, the plate portion 2a. The single-sided recording identification hole 10b for identifying single-sided recording is set by the recording enable / disable detection projection due to the above-described dimensional tolerance with respect to the single-sided recording identification hole 10b having a circular hole with a predetermined depth from There is a possibility of erroneous detection (for example, detection is not possible despite the single-sided recording identification hole 10b being provided, or the recording availability setting unit 10a is detected as the single-sided recording identification hole 10b).

Therefore, the optical disc apparatus side that does not erroneously detect the one-side recording identification hole 10b and the recordability setting portion 10a and wants to install the one-sided recording detection projection portion that fits into the one-side recording identification hole 10b as close as possible to the recording availability detection projection portion. to meet the demands, the distance from the parallel location hole 8b to open and close the lid 4 of the single-sided recording identification hole 10b as shown in Figure 2, it was the same as the distance L ₃ of the recording availability setting unit 10a. Further, since the distance from the right side wall 3b in the direction parallel to the open / close lid 4 of the single-sided recording identification hole 10b is on the left side wall 3a side with respect to the recording enable / disable setting unit 10a, the label adhering portion 2c is provided. It was set as the right side wall 3b side from the setting part 10a. Furthermore, the outer diameter of the protrusion fitted to the recording enable / disable setting portion 10a is a rod-like rod having a chamfered 1.5 mm engaging portion in consideration of the inner diameter of the recording enable / disable setting portion 10a. A contact switch for detecting with pressure called a so-called detection switch was applied to the other end of the contact switch, and a contact switch having a width of 5 mm parallel to the open / close lid 4 used exclusively was used. The detection switch for detecting the single-sided recording identification hole 10b is the same switch as the detection switch of the recording enable / disable setting unit 10a, and the distance parallel to the right side wall 3b from the center of the location hole 8b in the direction of the opening / closing lid 4 is L. ₃ was made the same as the tolerance of 3 and the direction of the right / left side wall 3b was changed from the recording enable / disable setting unit 10a, and the prototype of the single-sided recording identification hole 10b was also changed, and the detection accuracy was confirmed. As a result, the center point of the single-sided recording identification hole 10b is such that the distance L _{4 in the} parallel direction from the central point of the location hole 8b to the opening / closing lid ₄ is 3.45 mm or more and 3.55 mm or less, and the diameter of the single-sided recording identification hole 10b is 3. If it was 1 mm or more and 3.2 mm or less, there was little false detection with the recording availability setting part 10a with the said rod and contact switch. Moreover, erroneous detection when the dimensional tolerance of the distance L ₃ to 18.45mm or 18.55mm or less could be completely suppressed. In addition, although the diameter of the rod was examined at 1.5 mm, suppression of false detection could be achieved if it was up to about 2 mm, but because of the large crossing of the dimensions of the record enable / disable setting unit 10a, false detection occurred in the record enable / disable detection. .

  Such a cartridge 1 is made of, for example, polycarbonate resin, ABS resin, polystyrene resin or the like by injection molding, and can be molded by applying basically the same mold as the cartridge 31 shown in FIG. 4A. That is, when the cartridge 1 is molded, the single-sided recording identification hole 10b and the recording enable / disable setting part 38b of the cartridge 31 are nested so that the single-sided cartridge 1 and the double-sided cartridge 31 are not large. The mold can be produced without replacing the mold, and the manufacturing time is shortened, and it is not necessary to prepare in advance a mold for exclusive use of the cartridge 21 for single-sided use and a mold for exclusive use of the cartridge 31 for double-sided use. Even with only the cost, the cartridge and thus the DVD disk can be provided at low cost.

  In the above-described embodiment, the opening / closing lid 4 has been described as rotating around the rotation shaft 4a. However, the opening / closing lid 4 is taken out in conjunction with the sliding of the medium holding portion for loosely supporting the disc-shaped recording medium in the medium storage portion. Even if it is a structure, or even if it is the structure which opens any board part of Japanese Patent Publication No. 2001-513953 gazette with a shutter, there is no problem.

  According to the present invention, it is possible to produce a cartridge that can cope with the single-sided specification and the double-sided specification with only a slight change, and therefore, it is possible to provide a cartridge that can cope with the recording capacity at low cost.

(A) is a top view explaining one surface of the cartridge in one Embodiment of this invention, (b) is a top view explaining the other surface Main part enlarged view of the same embodiment Top view of cartridge containing single-sided recordable optical disc Top view explaining how to take out the same optical disc from the cartridge Top view of a cartridge containing a double-sided recordable optical disc Top view explaining how to take out the same optical disc from the cartridge Top view of a conventional removable cartridge The main part enlarged plan view of the cartridge (A) is a plan view for explaining a state in which the optical disk is stored in the cartridge, (b) is a plan view for explaining a state in which the claw portion of the cartridge is removed, and (c) explains a state in which the optical disk is taken out from the cartridge. Plan view

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cartridge 2a, 2b Plate part 3a, 3b Side wall 4 Opening / closing lid 5 Shutter 9 Claw part 10a Recording availability setting part 10b Single-sided recording identification hole

Claims (2)

A medium storage section for storing a disk-shaped recording medium having a data area for recording / reproducing a user data signal and a lead-in area in which information indicating data attribution is recorded on the inner periphery of the data area, and the medium storage section are formed. A pair of substantially rectangular plate parts, a pair of side walls that define a gap of the plate part by the height of the medium storage part, and an opening for opening the disk-shaped recording medium from the medium storage part to the outside An opening / closing lid that is provided in the plate portion, an opening that exposes part of the disk-shaped recording medium, a shutter member that opens / closes the opening, and a disc-shaped recording that is concave on the opening / closing lid side of the pair of side walls. A pair of gripper slot portions recessed on the medium side, a pair of autoloading hook portions recessed on the disk-shaped recording medium side in a substantially triangular shape on the shutter member side of the pair of side walls, and the open / close lid Includes a claw portion releasing said disc-shaped recording medium is to identify the likelihood that has been removed from the medium accommodating portion, and a recording permission setting unit that sets the recording possibility of the said disc-shaped recording medium,
The disc-shaped recording medium accommodated in the medium accommodating portion is a one-side recording medium having an information layer that can be recorded only on one surface,
The record enable / disable setting unit for setting record enable / disable for the recordable information layer;
A cartridge having a single-sided recording identification hole for identifying a single-sided recording medium on a surface of the plate portion facing the recordable information layer through a substrate of the disk-shaped recording medium. In the plate portion facing the recordable information layer through the disk-shaped recording medium substrate, when the pair of autoloading hook portions are viewed as the upper side and the pair of gripper slot portions as the lower side, A diameter of 4.00 mm or more and 4.01 mm or less with a center point in the range of 22.8 mm or more and 23.2 mm or less from the outer surface of the opening / closing lid and 11.0 mm or more and 11.4 mm or less from the outer surface of the right side wall. The plate portion is provided with a circular location hole of
The single-sided recording identification hole is a left side wall parallel to the opening / closing lid from the center point of the location hole to 18.45 mm or more and 18.55 mm or less in the direction of the opening / closing lid, and parallel to the opening / closing lid from the center point of the location hole. 2. The cartridge according to claim 1, wherein the cartridge has a circular shape having a diameter of 3.1 mm or more and 3.2 mm or less with any point in the range of 3.45 mm or more and 3.55 mm or less as a central point.

Images