JPH01116439A - Inspection device for optical information memory medium - Google Patents

Abstract

PURPOSE:To speed up an inspection process with a reduction in inspection time by performing an inspection sequentially with an inspection head mounting an optical information memory media sequentially on a plurality of spindles to rotate it. CONSTITUTION:At the position of a spindle 2, an optical information memory medium 1 is mounted on the spindle. At the position of a spindle 3, the rotation of the spindle is started. At the position of a spindle 4, an inspection of the optical information memory medium 1 is performed with an inspection head 7. At the position of a spindle 5, the optical information memory medium 1 is removed from the spindle. Such a series of operations is accomplished by the rotation of a turntable 6.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an optical information storage medium inspection WA@ that can efficiently inspect an optical information storage medium.

(Prior Art) Conventionally, an optical information storage medium inspection device has one spindle, an optical information storage medium is attached to this spindle, and the optical information storage medium is inspected while rotating through the spindle. An optical information storage medium is inspected by the head. The inspection contents include, for example, defects such as foreign substances and scratches on the optical information storage medium, transmission thickness of film formation, reflected color, pinholes, birefringence, shape and dimensions, and the like.

(Problems to be Solved by the Invention) Conventional optical information storage medium inspection devices have only one spindle, but this device is installed, for example, in a manufacturing inspection process and sent in one after another. When inspecting an optical information storage medium, first attach the optical information storage medium to the spindle and rotate it for inspection. After the inspection is completely completed, remove the optical information storage medium from the spindle and start the next optical information storage medium. This requires a series of operations to install an optical information storage medium, and it is not possible to perform a substantive inspection during the operation of installing and removing an optical information storage medium from the spindle, which increases the overall inspection time and reduces the manufacturing inspection process. The problem is that the speed cannot be increased and it is uneconomical.

The present invention has been made in view of the above, and its purpose is to shorten the overall inspection time including the installation and removal of optical information storage media, and to speed up the inspection process. An object of the present invention is to provide an information storage medium inspection device.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, an optical information storage medium inspection device of the present invention includes a plurality of spindles on which optical information storage media are mounted, and a plurality of spindles on which optical information storage media are mounted, and a rotation means for rotating the
An inspection head for inspecting an optical information storage medium rotated by rotation of the spindle by the rotation means; and an inspection head for sequentially inspecting the optical information storage medium mounted on the spindle and rotated by the rotation means with the inspection head. and movement control means for sequentially moving the spindle to positions corresponding to the inspection head.

(Function) The optical information storage medium inspection apparatus of the present invention is provided with a plurality of spindles, and the optical information storage media are sequentially mounted on the spindles and rotated, while being sequentially inspected with an inspection head.

(Example) Hereinafter, the present invention will be explained in detail using the drawings.

1 and 2 are a perspective view and a plan view, respectively, of an optical information storage medium inspection apparatus according to an embodiment of the present invention. The optical information storage medium inspection apparatus shown in both figures has a rotary table 6 and four spindles 2.3° 4.5 erected on the rotary table 6, and a disk-shaped disk is mounted on these spindles. Optical information storage media 1 are respectively attached. Further, an inspection head 7 approaches the optical information storage medium 1 mounted on the spindle 4, so that the optical information storage medium 1 can be inspected.

Each spindle is rotated by a motor (not shown) or the like, and the optical information storage medium 1 mounted on each spindle is rotated by the spindle, and the rotary table 6 to which the spindle is attached is rotated by the spindle. It is designed to rotate in the direction shown by the arrow in Fig. 2 by a motor (not shown), etc.
This allows the optical information storage medium 1 on each spindle to be sequentially inspected by the inspection head 7.

When the optical information storage medium inspection apparatus configured as described above is installed, for example, in the manufacturing inspection process of optical information storage media, the optical information storage medium 1 is mounted on the spindle at the position of the spindle 2 in the figure. , the rotation of the spindle is started at the spindle 3 position, the optical information storage medium 1 is inspected by the inspection head 7 at the spindle 4 position, and the optical information storage medium 1 is removed from the spindle at the spindle 5 position. These operations are performed by rotating the rotary table 6.

As a result, the optical information storage medium 1 is inspected by the inspection head 7.
During the inspection, the optical information storage medium 1 can be mounted on the spindle at the position of the spindle 2, and the optical information storage medium 1 can be removed from the spindle at the position of the spindle 5, and Inspection head 7
When the inspection is completed, the optical information storage medium 1
without having to wait for it to be installed and removed from the spindle.
By simply rotating the rotary table 6 and moving the optical information storage medium 1 located on the spindle 3 to the inspection head 7, the next optical information storage medium can be immediately inspected. Therefore, at least the time required to attach and detach the optical information storage medium is eliminated, and the overall inspection operation can be speeded up.

3 and 4 are a perspective view and a plan view, respectively, of another embodiment of the invention. The optical information storage medium inspection apparatus of this embodiment is different from the embodiments shown in FIGS. 1 and 2 in that the number of inspection heads is increased so that inspection can be performed using a plurality of inspection heads.

That is, in FIGS. 3 and 4, in addition to the inspection head 7 at the spindle 4 position, two inspection heads 8 and 9 are provided at the spindle 3 position, thereby allowing the spindle 3 to
The two inspection heads 8 and 9 can be used for inspection at the same time. In this case, each inspection head inspects different inspection items so that each inspection head 7.8.9 can inspect multiple items at the same time, and as the rotary table 6 rotates, the inspection head 7 and 7, all tests are completed when the test of the test head 7 is completed. As a result, the inspection operations are parallelized, so the inspection time itself is shortened.

In addition, in FIGS. 2 and 4, reciprocating arrows are shown corresponding to the rear of each inspection head, but this means that when inspecting an optical information storage medium, the inspection head is not connected to the optical information storage medium. This shows that the inspection head is configured to be able to approach and separate from the optical information recording medium so that the inspection head approaches the storage medium and then leaves the inspection head when the inspection is completed.

[Effects of the Invention] As explained above, according to the present invention, a plurality of spindles are provided, and optical information storage media are sequentially mounted on the spindles and are sequentially inspected by the inspection head while rotating, so that the inspection can be performed easily. While the optical information storage medium is being inspected by the head, the next optical information storage medium can be loaded onto the spindle, and the previous optical information storage medium can be removed from the spindle. Since the inspection operation does not stop due to attachment and removal of the inspection device, the inspection time can be shortened overall, and the inspection process can be speeded up even if it is placed in the manufacturing inspection process. Furthermore, by providing a plurality of inspection heads, the inspection time itself can be shortened.

[Brief explanation of the drawing]

1 and 2 are a perspective view and a plan view, respectively, of an optical information storage medium inspection apparatus according to one embodiment of the present invention, and FIGS. 3 and 4 are a perspective view and a plan view of another embodiment of the present invention. FIG. 1... Optical information storage medium 2-5... Spindle 6... Rotary table 7-9... Inspection head

Claims (2)

[Claims] (1) a plurality of spindles on which optical information storage media are mounted; a rotating means for rotating the spindles; an inspection head for inspecting the optical information storage medium rotated by the rotation of the spindles by the rotating means; and a movement control means for sequentially moving the spindle to positions corresponding to the inspection head so that the optical information storage medium mounted on the spindle and rotated by the rotation means can be sequentially inspected by the inspection head. An optical information storage medium inspection device characterized by: (2) The optical information storage medium inspection apparatus according to claim 1, wherein a plurality of said inspection heads are provided so that a plurality of optical information storage media can be inspected simultaneously.