Code disk with a plurality of tracks having different patterns

Details Code disk with a plurality of tracks having different patterns Code disk with a plurality of tracks having different patterns

2011-03-15

2011-03-15

Neyzari, Ali (Department: 2627)

Dynamic information storage or retrieval

Storage medium structure

Special groove

C369S275400, C250S231180, C428S064400

Reexamination Certificate

active

07907505

ABSTRACT:
A code disk for a high-resolution encoder that can detect an absolute position and a method for manufacturing a mold to produce the code disk are provided. The code disk is formed by using transparent substrate. The code disk includes a plurality of tracks provided on the transparent substrate and an area provided between the plurality of tracks. Each surface of the plurality of tracks has a different pattern. A level of the area is different from that of the each surface of the plurality of tracks. The method for manufacturing the mold includes steps of processing a plurality of tracks with a flat surface on material; processing an area with a level different from that of each surface, between the plurality of tracks; forming different patterns on the each surface; plating the first material; and peeling plating from the first material to obtain a mold.

REFERENCES:
patent: 4757196 (1988-07-01), Yamada et al.
patent: 4820918 (1989-04-01), Igaki et al.
patent: 6018510 (2000-01-01), Abe et al.
patent: 6093928 (2000-07-01), Ohtomo et al.
patent: 6803560 (2004-10-01), Okumura et al.
patent: 7193962 (2007-03-01), Sakamoto et al.
patent: 7612331 (2009-11-01), Sakamoto et al.
patent: 62-003616 (1987-01-01), None
patent: 62-005127 (1987-01-01), None
patent: 4-145326 (1992-05-01), None
patent: 08-229955 (1996-09-01), None
patent: 11-23321 (1999-01-01), None
patent: 11-031334 (1999-02-01), None
patent: 2000-352527 (2000-12-01), None
patent: 2001-227989 (2001-08-01), None
Japanese Office Action of JP 2005-107752, dated Oct. 21, 2008.

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