JPS6466844A - Manufacture of substrate for information recording medium - Google Patents

Manufacture of substrate for information recording medium

Info

Publication number
JPS6466844A
JPS6466844A JP22202187A JP22202187A JPS6466844A JP S6466844 A JPS6466844 A JP S6466844A JP 22202187 A JP22202187 A JP 22202187A JP 22202187 A JP22202187 A JP 22202187A JP S6466844 A JPS6466844 A JP S6466844A
Authority
JP
Japan
Prior art keywords
cast
units
molding mold
improved
recording medium
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
JP22202187A
Other languages
Japanese (ja)
Inventor
Tomoyuki Tamura
Mitsuo Hiraoka
Hiroyuki Imataki
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP22202187A priority Critical patent/JPS6466844A/en
Priority to DE19883850723 priority patent/DE3850723T2/en
Priority to EP19880308070 priority patent/EP0308104B1/en
Publication of JPS6466844A publication Critical patent/JPS6466844A/en
Priority to US07/622,151 priority patent/US5174937A/en
Priority to US07/941,172 priority patent/US5344304A/en
Pending legal-status Critical Current

Links

Landscapes

  • Manufacturing Optical Record Carriers (AREA)

Abstract

PURPOSE:To improve the durability of a cast-molding mold, and to improve the productivity of substrate manufacturing by using the cat-molding mold formed by jointing plural units together by using special adhesive. CONSTITUTION:The mold of construction that plural pieces of the units 1 whose one or plural surfaces are made to be a unit are arranged and jointed together, is formed as the cast-molding mold having a sectional form contrary to the ruggedness form of the groove for tracking and a pit for information, etc. of the recording medium 9, and the respective units 1 are made detachable. Since the adhesives 2, 3, whose principal components are thermoplastic resin and which have Young's modulus of 2-300kg/cm<2>, are used as the adhesives 2, 3 for jointing the units, resisting force against a stress due to a heat and a pressure at the time of cast-molding, and the stress due to the shrinking of the resin 7 to set, is improved. Thus, the durability of the cast-molding mold can be improved, and besides, the productivity of the substrate manufacturing can be improved.
JP22202187A 1987-09-05 1987-09-07 Manufacture of substrate for information recording medium Pending JPS6466844A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP22202187A JPS6466844A (en) 1987-09-07 1987-09-07 Manufacture of substrate for information recording medium
DE19883850723 DE3850723T2 (en) 1987-09-05 1988-08-31 Form for manufacturing an information storage medium and method for manufacturing an information storage medium.
EP19880308070 EP0308104B1 (en) 1987-09-05 1988-08-31 Mold for molding of substrate for information recording medium and method for preparing substrate for information recording medium
US07/622,151 US5174937A (en) 1987-09-05 1990-12-03 Method for molding of substrate for information recording medium and method for preparing substrate for information recording medium
US07/941,172 US5344304A (en) 1987-09-05 1992-09-04 Mold for molding of substrate for information recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22202187A JPS6466844A (en) 1987-09-07 1987-09-07 Manufacture of substrate for information recording medium

Publications (1)

Publication Number Publication Date
JPS6466844A true JPS6466844A (en) 1989-03-13

Family

ID=16775858

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22202187A Pending JPS6466844A (en) 1987-09-05 1987-09-07 Manufacture of substrate for information recording medium

Country Status (1)

Country Link
JP (1) JPS6466844A (en)

Similar Documents

Publication Publication Date Title
DE69111576D1 (en) High performance epoxy resin adhesive.
ATE98977T1 (en) IMPACT MODIFIED POLYCARBONATE.
DE3580175D1 (en) ASSEMBLING THE SLIDE FOR A RECORDING HEAD.
KR860003591A (en) Optical disc
DK182589D0 (en) CLOTHING ELEMENT WITH A NATURAL STONE PLATE AND A PROCEDURE FOR MANUFACTURING SUCH A CLOTHING ELEMENT
JPS6466844A (en) Manufacture of substrate for information recording medium
JPS644912A (en) Magnetic head and its production
DE3854571D1 (en) Activation energy curable resin composition.
EP0869488A3 (en) Bonded optical disk
EP0390413A3 (en) Optical disc and method for making same
US2407280A (en) Mold for use in the manufacture of optical elements
GB560251A (en) Improvements in or relating to the jointing of plates, sheets and the like
DK470585D0 (en) ADHESIVES BASED ON THERMOPLASTIC ELASTOMERS AND THEIR USE AS PRESSURE SENSITIVE ADHESIVES
ATE87126T1 (en) PROCESS THAT USES ELASTIC FOIL FOR MAKING AN INTEGRATED CIRCUIT PACKAGE WITH PADS IN A GRADUATED DOWN.
ATE50326T1 (en) HARD PLASTIC SUPPORT.
DE3886854D1 (en) Method for adjusting the thermal balance of a runner.
DK419488D0 (en) PROCEDURE AND APPLICATIONS FOR THE PERFORMANCE OF A SYNTHESIS, IN PARTICULAR FOR THE SYNTHESIS OF AMMONIAK
KR880014530A (en) How to display disk type information carrier
TWI263065B (en) Precision grating element and master plate thereof
IT1227363B (en) COMPOSITION OF EPOXY RESIN AND PROCESSES FOR THE PRODUCTION OF PRE-IMPREGNATED MATERIALS AND A LAMINATED SLAB.
JPS6439648A (en) Production of optical recording medium
KR810001411Y1 (en) Guitar
IT1176389B (en) PRESSURE DISC FOR CLUTCHES WITH DIAPHRAGM SPRING
JP2797522B2 (en) Optical recording medium sheet
JPS5284752A (en) Preparation of optical part which uses as matrix cured adhesives