Mehod of forming indicia on compact disks and indicia-bearing compact disks
AssigneeSanyo Laser Products, Inc.
InventorsIchiro Kodaka, Shoji Ishida, Charles Plumer
Life of this patent
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AssigneeSanyo Laser Products, Inc.
InventorsIchiro Kodaka, Shoji Ishida, Charles Plumer
Estimating the term…
A new compact disk ("CD") is formed providing a bright, metallic presentation of indicia such as trademarks, promotion and advertising copy and other alphanumeric information around the circumference of the disk with recorded digital data in the disk's central portion. Such a CD may be a 120 mm CD including a central portion recorded in the 80 mm format of a single CD, with the desired indicia formed by a bright metal indicia-bearing substrate in the 20 mm, radially-extending, circumferential portion of the CD that surrounds the recorded digital data. Such CD's are manufactured by recording the digital data in the central 80 mm of a 120 mm master, leaving the remaining unrecorded circumferential portion of the master with a smooth surface and applying the desired indicia onto the unrecorded outer peripheral portion of a disk used to form production stampers.
In a method of manufacturing a CD, the improvement comprising:
In a method of manufacturing a CD, the improvement comprising the steps of limiting recordation of digital data to a central portion of a disk to provide a recorded disk with a smooth and unrecorded peripheral portion, placing desired indicia on the unrecorded peripheral portion of the recorded disk, and thereafter producing a production tooling for the manufacturing of a CD from the disk which is adapted to display the desired indicia.
Dependencies are inferred from the claim text.