SE7709187L - WAY TO COPY A VIDEO - Google Patents

WAY TO COPY A VIDEO

Info

Publication number
SE7709187L
SE7709187L SE7709187A SE7709187A SE7709187L SE 7709187 L SE7709187 L SE 7709187L SE 7709187 A SE7709187 A SE 7709187A SE 7709187 A SE7709187 A SE 7709187A SE 7709187 L SE7709187 L SE 7709187L
Authority
SE
Sweden
Prior art keywords
replicate
disc
contact
contact printing
photographic
Prior art date
Application number
SE7709187A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE435215B (en
Inventor
H T Thomas
D G Howe
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of SE7709187L publication Critical patent/SE7709187L/en
Publication of SE435215B publication Critical patent/SE435215B/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/28—Re-recording, i.e. transcribing information from one optical record carrier on to one or more similar or dissimilar record carriers
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/18—Diazo-type processes, e.g. thermal development, or agents therefor
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
    • G11B7/261—Preparing a master, e.g. exposing photoresist, electroforming

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Manufacturing Optical Record Carriers (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)

Abstract

PRODUCING A REPLICATE VIDEO DISC BY A METHOD OF PHOTOGRAPHIC CONTACT PRINTING A photographic contact printing process is disclosed having application in the mass production of replicate video discs from a master disc, and other applications wherein it is desired to replicate microdetail over a relatively large area. A problem with conventional contact printing from a mask to a photographic medium is one of maintaining intimate contact over a relatively large area since dust, dirt, etc., are almost impossible to completely eliminate in any practical manner. In accordance with the present invention, a contact printing process is proposed wherein intimate contact is not necessary for making high quality contact prints. The present invention recognizes that in contact printing information from a master disc to a replicate disc, the contact printing process is significantly less sensitive to imperfect contact between the master disc and the replicate disc if one employs a replicate disc comprising a photosensitive material having certain optical properties. In particular, the photosensitive material initially has a high level of absorption to the actinic radiation used for exposure but, under the influence of such actinic radiation, the absorption decays to a lower level during exposure.
SE7709187A 1976-08-16 1977-08-15 INFORMATION GUIDE AND PHOTOGRAPHIC PREPARATION OF A DUPLICATE INFORMATION GUIDE SE435215B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US71501776A 1976-08-16 1976-08-16

Publications (2)

Publication Number Publication Date
SE7709187L true SE7709187L (en) 1978-02-17
SE435215B SE435215B (en) 1984-09-10

Family

ID=24872370

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7709187A SE435215B (en) 1976-08-16 1977-08-15 INFORMATION GUIDE AND PHOTOGRAPHIC PREPARATION OF A DUPLICATE INFORMATION GUIDE

Country Status (8)

Country Link
JP (1) JPS5323605A (en)
AU (1) AU513067B2 (en)
BE (1) BE857828A (en)
CA (1) CA1171959A (en)
CH (1) CH616797A5 (en)
GB (1) GB1590795A (en)
IT (1) IT1083923B (en)
SE (1) SE435215B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5724038A (en) * 1980-07-18 1982-02-08 Sony Corp Information recording member
JPS5826335A (en) * 1981-08-07 1983-02-16 Toppan Printing Co Ltd Duplicating method of information recording disc

Also Published As

Publication number Publication date
AU513067B2 (en) 1980-11-13
IT1083923B (en) 1985-05-25
GB1590795A (en) 1981-06-10
BE857828A (en) 1978-02-16
SE435215B (en) 1984-09-10
CH616797A5 (en) 1980-04-15
CA1171959A (en) 1984-07-31
AU2788077A (en) 1979-02-22
JPS5323605A (en) 1978-03-04

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