Method and device for instantly encoding digitized information on a stamper from which compact discs can be made
AssigneesSony Corporation, Sony Electrons, Inc.
InventorEdward W. Morton
Life of this patent
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Abstract
An apparatus and method for mass producing optically readable discs includes providing an array of light emitting devices which are arranged in a spiral pattern corresponding to the spiral track along which data is recorded on optically readable discs. The light emitting devices of the array are driven selectively to expose a layer of photoresist on a substrate. The light is focused on the substrate by an array of micro-lenses corresponding to the array of light emitting devices. When the photoresist on the substrate is developed, it can either by cured for use as a stamper or metallized for use in forming, in succession, a father, a mother and a stamper.
Claims17
An apparatus for producing optically-readable discs, comprising:
- an array of light emitting devices, spirally arranged corresponding a spiral track, along which data is recorded, on a disc;
- and
- a processor for receiving a digital signal to be recorded on said disc and for selectively driving said light emitting devices in accordance with said digital signal.
A method of recording information on an optically readable disc comprising exposing a substrate having a layer of photoresist thereon with an array of spirally-arranged light emitting devices corresponding to a spiral track along which data is recorded on an optically readable disc, wherein said light emitting devices of said array are driven according to a digital data signal to be recorded on said optically readable disc.
An apparatus for producing optically readable discs, comprising:
- light emitting means spirally arranged to selectively emit light along a spiral track corresponding a spiral track along which data is recorded on a disc;
- and
- means for receiving a digital signal to be recorded on said disc and for selectively driving said light emitting means in accordance with said digital signal.
Dependencies are inferred from the claim text.