Inspection apparatus

• US 4,868,805 A
• Filed: 08/13/1987
• Issued: 09/19/1989
• Est. Priority Date: 08/13/1986
• Status: Expired due to Fees

• Current Assignee: Seiko Seiki Kabushiki Kaisha
• Original Assignee: Seiko Seiki Kabushiki Kaisha
• Inventors: Hanami, Osamu, Nomura, Shinichi, Kogure, Toshiharu
• Primary Examiner(s): Sikes, William L.
• Assistant Examiner(s): Ullah, Akh E.
• Application Number:
  US07/085,071
• Time in Patent Office: 768 Days
• Field of Search: 369/53, 369/54, 369/58
• US Class Current: 369/53.41
• CPC Class Codes: G11B 17/0282 by means provided on the turntable
• CPC Class Codes: G11B 19/12 by sensing distinguishing features of or on records, e.g. diameter end mark
• CPC Class Codes: G11B 23/0021 discs
• CPC Class Codes: G11B 33/10 Indicating arrangements; Warning arrangements G11B15/04, G11B19/04, G11B27/34, G11B27/36 take precedence

Abstract

The present invention provides an inspection apparatus for inspecting an object such as an information storage medium or an information recording/reproducing head under set inspection conditions, which comprises: a sensor for identifying the type of object set for inspection by its size, and automatic inspection condition setting means for automatically setting the inspection conditions for the object to be inspected which are associated with the type identified.

Claims

1. An apparatus for inspecting an information storage medium comprising:

means for detecting a predetermined characteristic of the information storage medium;

means for producing a signal of said detected characteristic of the information storage medium; and

means responsive to said signal for initiating an inspection sequence and positioning at least one inspection head in predetermined positions relative to the information storage medium.

2. The apparatus of claim 1, comprising means for recording inspection signals in said information storage medium and reproducing the inspection signals stored therein.

3. The apparatus of claim 1, comprising means for detecting positions of said inspection head and for producing position signals corresponding to predetermined positions of said head relative to said information storage medium.

4. The apparatus of claim 3, in which said means for initiating an inspection sequence comprises means for controlling relative movement of said head in response to said position signals.

5. The apparatus of claim 1, wherein the information storage medium comprises a disk provided with a surface layer for storing digital information.

6. The apparatus of claim 1, wherein said detecting means comprises a plurality of photosensors each of which is located so as to correspond to one of a plurality of different types of information storage mediums.

7. The apparatus of claim 3, wherein said head position detecting means comprises a plurality of photointerrupters each of which is located so as to correspond to one of a plurality of predetermined positions of said inspection head.

8. The apparatus of claim 7, in which said plurality of predetermined positions of said inspection head consists of positions outside, on the outer periphery of, and on the inner periphery of said information storage medium.

9. The apparatus of claim 1, comprising a plurality of said inspection heads.

10. The apparatus of claim 9, comprising means for elevating said inspection heads relative to the information storage medium.

11. The apparatus of claim 5, comprising means for clamping said disk in position for said inspection sequence.

12. The apparatus of claim 11, in which said clamping means comprises a clamping body having disk clamping reference plane for receiving the disk;

a sliding shaft rotatably housed in said clamping body and movable back and forth relative to said body, one end of said shaft having a disk clamping latch;

means for actuating said sliding shaft; and

means for rotating said sliding shaft upon actuation thereof, thereby to move said latch relative to said disk clamping reference plane.

13. Apparatus for inspecting an information storage medium comprising:

type identifying sensor means for detecting a type of said information storage medium, and for producing a detection signal corresponding to the type of said information storage medium;

head means movable relative to said information storage medium for recording inspection signals in said information storage medium and reproducing the inspection signals stored therein;

head position detecting means for detecting positions of said head means and for producing position signals corresponding to predetermined positions of said head means relative to said information storage medium; and

inspection condition setting means responsive to said detection signal for setting an inspection condition corresponding to the type of said information storage medium, said condition setting means controlling relative movement of said head means in response to said position signals.

14. The apparatus of claim 13, wherein said information storage medium comprises a disk provided with a surface layer for storing digital information.

15. The apparatus of claim 13, wherein said type identifying sensor means comprises a plurality of photosensors arranged at positions corresponding to a plurality of types of said information storage medium.

16. The apparatus of claim 13, wherein said position detecting means comprises a plurality of photointerrupters arranged at positions corresponding to positions of said head means placed outside, on the outer periphery of, and on the inner periphery of said disk.