JPH0579724U - Stamper playback device - Google Patents

Abstract

(57) [Summary] [Purpose] The loading method using the tray section is abolished to eliminate inadvertent damage to the stamper and improve the mounting accuracy. A turntable portion 22 is provided in the stamper reproducing main body portion 16, and an optical pickup portion 24 that moves in the radial direction of the turntable portion 22 is provided near the turntable portion 22. Then, the opening / closing lid 26 covering the turntable portion 22 is opened, and the stamper suction jig 34 is directly attached to the turntable portion 22.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a stamper reproducing apparatus for reading a record in order to confirm the quality of a master, a so-called stamper, for manufacturing an optical disc such as a CD (compact disc) by a molding process.

[0002]

[Prior Art]

 In order to manufacture a CD (Compact Disc) that has rapidly spread as a music medium recently, a master disc having pits as information signals is prepared in advance. An optical disc master recording device using a laser beam is used for this production. Generally, a glass master disk with a resist coated on its surface is exposed and recorded by the above-mentioned optical disk master recording apparatus, and then a development, plating process is performed, and a metal master disk, that is, a stamper for replica molding the disk is completed. .. Then, the stamper surface is pressed against a disk made of a photo-curing resin or the like to transfer the pits, and the disk is molded. The performance such as the reproduction characteristics of the disc after molding is naturally related to the performance of this stamper. The player was slightly remodeled and the recording was simply played back to check the quality.

FIG. 4 is a perspective view showing an example of a conventional stamper reproducing device. This stamper reproducing device has, for example, a commercially available CD player main body 2, in which a turntable portion 6 for rotating a metal stamper 4 and an optical pickup portion for reading an information signal from the stamper 4 and the like (see FIG. (Not shown). A glass plate (not shown), which is optically equivalent to the optical disc, is attached to the optical pickup section for reproducing the stamper. Further, a tray portion 8 is provided on one side of the player main body 2 so as to be able to project and retract forward. The attraction jig 10 that holds the metal annular stamper 4 has a magnet 12 that attracts the stamper 4 and can be handled in the same way as an optical disc. Further, the tray portion 8 on which the suction jig 10 is mounted and loaded has an accommodating portion formed according to the outer shape of the suction jig 10 so that the suction jig 10 can be loaded similarly to an optical disk.

[0004]

[Problems to be solved by the device]

 In the conventional stamper reproducing device as described above, since the suction jig is treated in the same manner as the disc, the stamper 4 is mounted on the tray portion 8 in order to reproduce and inspect the performance of the stamper 4 in the production workplace. There is a problem that the signal surface of the stamper 4 may be damaged due to the carelessness of the inspector when placing it, or foreign matter such as dust adhered to the surface of the tray portion 8 may adhere to the surface of the stamper 4. there were. When such a problem occurs, the stamper 4 cannot be used in the subsequent process, and there is a disadvantage that productivity efficiency is significantly reduced.

Further, in this type of loading method, the clamping accuracy of the disc to the turntable portion 6 is not so high, but in this conventional device, the inner diameter of the suction jig 10 is the same as that of a normal disc. Since the suction jig is clamped to the turntable portion 6 in the same manner as in the case of the disc, there is a problem that the eccentricity accuracy at the time of clamping cannot be increased. The present invention has been devised in order to effectively solve the above problems. SUMMARY OF THE INVENTION An object of the present invention is to provide a stamper regenerating apparatus which can eliminate the inadvertent damage to the stamper and improve the mounting accuracy by eliminating the loading method using the tray section.

[0006]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention is a stamper reproducing apparatus for reading a signal from a metal stamper on which a signal is recorded. The stamper reproducing main body and the stamper reproducing main body are rotatably provided. A turntable unit, a stamper suction jig that is attached to the turntable unit while attracting the stamper with a magnet, an optical pickup unit that reads out signals from the stamper, and an opening / closing lid that covers the turntable unit. It is a thing.

[0007]

[Action]

 Since the present invention is configured as described above, the stamper is attracted by the magnet of the stamper attracting jig, and in this state, the stamper is directly mounted on the turntable of the main body of the stamper. Then, a signal is read out by the optical pickup section while rotating the stamper while the pickup section is covered with the opening / closing lid.

[0008]

【Example】

 An embodiment of the stamper reproducing device according to the present invention will be described below in detail with reference to the accompanying drawings. 1 is a perspective view showing an embodiment of a stamper regenerating apparatus according to the present invention, and FIG. 2 is an enlarged view showing a part of a stamper suction jig and a turntable portion of the present invention. As shown in the figure, the stamper reproducing device 14 has a stamper reproducing main body 16 which is formed into a substantially box shape and has therein various electronic components such as a microcomputer necessary for the operation of the device and a drive system. A recessed stamper accommodating portion 18 is formed in the upper portion of the reproducing main body portion 16.

A rotatable shaft 20 is provided at the center of the bottom of the stamper accommodating portion 18, and the shaft 20 has a diameter smaller than the inner diameter of the signal surface of the stamper 4 formed of metal in an annular shape. A turntable portion 22 having a small diameter is fixed with the shaft tip portion 20A protruding. An optical pickup section 24 is provided at the bottom of the stamper housing section 18 so as to be reciprocally movable in the radial direction of the turntable section 22 in order to read a signal recorded in the stamper 4. .. A glass plate (not shown), which is optically equivalent to the thickness of the disc, is attached to the optical pickup unit 24 in order to make the conditions equivalent to the optical disc when reading the stamper signal.

The stamper accommodating portion 18 is provided with an opening / closing lid 26 made of, for example, a transparent or translucent plastic material or the like that covers the stamper accommodating portion 18 in the vertical direction. The inside is visible. A handle 28 for opening and closing is attached to the open / close lid 26. Further, a group of various operation switches 30 and a jack 32 for remote control are provided on the front part of the stamper reproducing main body 16. On the other hand, as shown in FIG. 2, the stamper suction jig 34 for sucking and holding the stamper 4 is formed into a disk shape having a diameter slightly larger than the diameter of the stamper 4, and the lower surface thereof has a circular shape. A ring-shaped housing recess 36 is formed to house the annular stamper 4 and, for example, a ring-shaped stamper magnet 38 for magnetically attracting the stamper 4 is provided on the housing recess 36. It is being done.

The stamper suction jig 34 is provided at its central portion with an upwardly projecting handle portion 40, and at a lower portion thereof with a downwardly projecting handle portion 40, which is a central concave portion 22A of the turntable portion 22. A fitting convex portion 42 that is fitted to is formed. The diameter of the fitting convex portion 42 is set to be considerably smaller than that of the central hole 4A of the stamper 4, and the fitting convex portion 42 can be inserted into the central hole 4A. Further, a shaft fitting hole 44 for inserting and fitting the tip portion 20A of the shaft 20 is formed in the fitting convex portion 42 and the handle portion 40. A ring-shaped turntable magnet 46 is provided at the base end of the fitting convex portion 42 so as to correspond to the peripheral portion of the turntable portion 22. It is configured so that it can be strongly adsorbed to the portion 22. The dimensions of the shaft tip portion 20A, the shaft fitting hole 44, the fitting convex portion 42, and the central concave portion 22A are defined with high accuracy, and the positional deviation during mounting is set to be extremely small. There is.

Next, the operation of this embodiment configured as described above will be described. First, when reproducing the information signal recorded in the stamper 4, hold the handle portion 40 of the disk-shaped stamper suction jig 34 in the hand, and insert the ring-shaped stamper into the accommodation recess 36 on the lower surface. Accommodates 4. At this time, since the stamper magnet 38 of the stamper suction jig 34 attracts the metal stamper 4 by magnetic force, the stamper 4 can be firmly attracted and held.

Then, the opening / closing lid 26 provided on the upper part of the stamper reproduction main body 16 is developed upward to accommodate the stamper suction jig 34 to which the stamper 4 is suctioned in the stamper storage portion 18. At this time, the shaft tip portion 20A of the turntable portion 22 provided at the bottom of the stamper housing portion 18 is inserted into the shaft fitting hole 44 of the stamper suction jig 34, and these are fitted together. At the same time, the fitting convex portion 42 of the stamper suction jig 34 is inserted into the central concave portion 22A of the turntable portion 22. Since the shaft fitting hole 44 and the shaft tip portion 20A and the fitting convex portion 42 and the central concave portion 22A are formed with high dimensional accuracy, the stamper 4 can be mounted with high eccentricity accuracy. In this case, the ring-shaped turntable magnet 46 provided in the central portion of the stamper suction jig 34 is strongly attracted to the turntable portion 22 by the magnetic force. After the stamper suction jig 34 is set on the turntable section 22 in this way, the opening / closing lid 26 is closed and the optical pickup section 24 performs the reproduction operation of the information signal.

As described above, in the present embodiment, the stamper suction jig 34 is directly attached to the turntable portion 22 without using a loading mechanism or the like, so that the tray portion of the conventional apparatus is used. In addition to reducing the possibility that the inspector will inadvertently damage the signal surface of the stamper compared to the above, dust such as dust adhering to the tray part will adhere to the stamper 4. It is also possible to prevent this. Further, as described above, since the mounting mechanism is directly mounted on the turntable portion 22 without using a loading mechanism or the like whose mounting accuracy is not so high, it is possible to greatly improve the eccentricity accuracy of the stamper suction jig 34. .. Further, since the opening / closing lid 26 covering the stamper accommodating portion 18 is made of a transparent or translucent material, the stamper suction jig 34 can be visually recognized while the inner portion is rotating, and the mental burden of the inspector can be reduced. it can.

In the above-described embodiment, the opening / closing lid 26 is manually and upwardly deployed, but the present invention is not limited to this, and the opening / closing lid 26 may be automatically opened / closed. Alternatively, this may be expanded laterally. Further, as shown in FIG. 3, a remote control unit 48 connected by a wire 46 having a finite length may be connected to the remote control jack 32 provided on the front surface of the stamper reproducing main body 16, or 1 A plurality of stamper reproducing main body units 16 may be connected in parallel to one remote control unit 48 to prevent an erroneous operation.

[0016]

[Effect of the device]

 As described above, according to the stamper reproducing apparatus of the present invention, the following excellent working effects can be exhibited. Since the stamper suction jig is mounted directly without using a loading mechanism, etc., not only can foreign matter not be stuck to the stamper, but also the stamper signal surface can be prevented from being damaged by the carelessness of the inspector. can do. Further, the mounting accuracy of the stamper suction jig can be greatly improved for the above-mentioned reasons.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a stamper reproducing device according to the present invention.

FIG. 2 is an enlarged view showing a stamper suction jig and a turntable part which constitute the present invention.

FIG. 3 is a perspective view showing a stamper reproducing device according to the present invention to which a remote control unit is connected.

FIG. 4 is a perspective view showing a conventional stamper reproducing device.

[Explanation of symbols]

4 ... Stamper, 14 ... Stamper reproducing device, 16 ... Stamper reproducing main body section, 20 ... Shaft, 22 ... Turntable section, 24 ... Optical pickup section, 26 ... Open / close lid, 34 ... Stamper suction jig, 38 ... Stamper magnet , 40 ...
Handle, 46 ... Magnet for turntable.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Nobuo Hashimoto, 3-12 Moriya-cho, Kanagawa-ku, Kanagawa, Japan Victor Company of Japan, Ltd. (72) Kenji Furuta 3--12, Moriya-cho, Kanagawa-ku, Yokohama Address inside Victor Company of Japan, Ltd.

Claims (1)

[Scope of utility model registration request] 1. A stamper reproducing apparatus for reading a signal from a metal stamper on which a signal is recorded, a stamper reproducing main body, a turntable portion rotatably provided on the stamper reproducing main body, and a magnet for the stamper. A stamper reproducing device including a stamper suction jig that is mounted on the turntable unit while being sucked by the optical pickup unit, an optical pickup unit that reads a signal from the stamper, and an opening / closing lid that covers the turntable unit.