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

2007-03-20

2007-03-20

Neyzari, Ali (Department: 2627)

Dynamic information storage or retrieval

Storage medium structure

Special groove

C369S275400

Reexamination Certificate

active

10334222

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: 4820918 (1989-04-01), Igaki et al.
patent: 6018510 (2000-01-01), Abe et al.
patent: 6803560 (2004-10-01), Okumura et al.
patent: 62-003616 (1987-01-01), None
patent: 62-005127 (1987-01-01), 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

Affiliated with

Also associated with

Rating

Code disk with a plurality of tracks having different patterns does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Code disk with a plurality of tracks having different patterns, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Code disk with a plurality of tracks having different patterns will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3796908