Optical cards and processes for preparing the same

Details Optical cards and processes for preparing the same Optical cards and processes for preparing the same

1986-02-18

1988-06-28

Pitts, Harold I.

Registers

Records

Laminated

235487, G06K 1902

Patent

active

047541288

ABSTRACT:
An optical card comprising a card substrate and a light reflective layer provided on said card substrate, said light reflective layer comprising an optical reflective metallic thin film having a light information pattern formed therein is prepared by forming said optical information pattern by photoetching. According to this optical card, it is possible to readily carry out high density recording.

REFERENCES:
patent: 3873813 (1975-02-01), Lahr et al.
patent: 4132350 (1979-01-01), Kubota
patent: 4230939 (1980-10-01), de Bont
patent: 4304848 (1981-12-01), Bouldin et al.
patent: 4542288 (1985-09-01), Drexler

Affiliated with

Also associated with

Rating

Optical cards and processes for preparing the same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical cards and processes for preparing the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical cards and processes for preparing the same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1916320