JPS641588A - Optical card - Google Patents

Optical card

Info

Publication number
JPS641588A
JPS641588A JP62158099A JP15809987A JPS641588A JP S641588 A JPS641588 A JP S641588A JP 62158099 A JP62158099 A JP 62158099A JP 15809987 A JP15809987 A JP 15809987A JP S641588 A JPS641588 A JP S641588A
Authority
JP
Japan
Prior art keywords
film
diamond
carbon
forming
main body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62158099A
Other languages
Japanese (ja)
Other versions
JPH011588A (en
Inventor
Shigeki Hoshino
Kazutaka Fujii
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP62-158099A priority Critical patent/JPH011588A/en
Priority claimed from JP62-158099A external-priority patent/JPH011588A/en
Publication of JPS641588A publication Critical patent/JPS641588A/en
Publication of JPH011588A publication Critical patent/JPH011588A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Credit Cards Or The Like (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

PURPOSE:To reduce surface damage, by forming a film based on carbon to a card main body as a protective film. CONSTITUTION:A card main body is formed, for example, by forming the patterns of an Al reflecting film and recording bits 14 to a polycarbonate resin substrate 15 and bonding said pattern surface to a polyvinyl chloride substrate 11 by an adhesive 12 and subsequently forming a diamond film 16, a diamond like carbon film 16 or a carbon film 16 of diamond like carbon and graphite like carbon to the polycarbonate resin substrate 15. The film 16 is generally transparent in visible and infrared regions and the hardness thereof shows a value close to that of natural diamond and, therefore, even if the film is brought into contact with a substance excepting diamond, said film is not damaged in spite of a thin film. As a result, the deterioration of data due to damage at the time of reading by laser beam is not generated.
JP62-158099A 1987-06-24 optical card Pending JPH011588A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62-158099A JPH011588A (en) 1987-06-24 optical card

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62-158099A JPH011588A (en) 1987-06-24 optical card

Publications (2)

Publication Number Publication Date
JPS641588A true JPS641588A (en) 1989-01-05
JPH011588A JPH011588A (en) 1989-01-05

Family

ID=

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5171607A (en) * 1990-01-29 1992-12-15 Bausch & Lomb Incorporated Method of depositing diamond-like carbon film onto a substrate having a low melting temperature
EP0639830A1 (en) * 1989-07-28 1995-02-22 Matsushita Electric Industrial Co., Ltd. Optical recording apparatus
EP1296319A4 (en) * 2000-04-25 2005-04-13 Matsushita Electric Ind Co Ltd Method of manufacturing disk substrate, and method and device for manufacturing optical disk

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0639830A1 (en) * 1989-07-28 1995-02-22 Matsushita Electric Industrial Co., Ltd. Optical recording apparatus
US5171607A (en) * 1990-01-29 1992-12-15 Bausch & Lomb Incorporated Method of depositing diamond-like carbon film onto a substrate having a low melting temperature
EP1296319A4 (en) * 2000-04-25 2005-04-13 Matsushita Electric Ind Co Ltd Method of manufacturing disk substrate, and method and device for manufacturing optical disk
US7101593B2 (en) 2000-04-25 2006-09-05 Matsushita Electric Industrial Co., Ltd. Method for producing a disk-shaped substrate and method for producing an optical disk

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