BE889440A - Matiere a deux couches photosensibles pour enregistrement d'informations - Google Patents

Matiere a deux couches photosensibles pour enregistrement d'informations

Info

Publication number
BE889440A
BE889440A BE0/205257A BE205257A BE889440A BE 889440 A BE889440 A BE 889440A BE 0/205257 A BE0/205257 A BE 0/205257A BE 205257 A BE205257 A BE 205257A BE 889440 A BE889440 A BE 889440A
Authority
BE
Belgium
Prior art keywords
information recording
photosensitive layers
photosensitive
layers
recording
Prior art date
Application number
BE0/205257A
Other languages
English (en)
French (fr)
Inventor
J Drexler
Original Assignee
Drexler Tech
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 Drexler Tech filed Critical Drexler Tech
Publication of BE889440A publication Critical patent/BE889440A/fr

Links

Classifications

    • 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
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/46—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein having more than one photosensitive layer
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Preparing Plates And Mask In Photomechanical Process (AREA)
BE0/205257A 1980-07-21 1981-06-30 Matiere a deux couches photosensibles pour enregistrement d'informations BE889440A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US17080280A 1980-07-21 1980-07-21

Publications (1)

Publication Number Publication Date
BE889440A true BE889440A (fr) 1981-10-16

Family

ID=22621316

Family Applications (1)

Application Number Title Priority Date Filing Date
BE0/205257A BE889440A (fr) 1980-07-21 1981-06-30 Matiere a deux couches photosensibles pour enregistrement d'informations

Country Status (5)

Country Link
JP (1) JPS5941878B2 (enrdf_load_stackoverflow)
BE (1) BE889440A (enrdf_load_stackoverflow)
DE (1) DE3125715A1 (enrdf_load_stackoverflow)
FR (1) FR2487089A1 (enrdf_load_stackoverflow)
GB (1) GB2081461B (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8610191D0 (en) * 1986-04-25 1986-05-29 Ciba Geigy Ag Holograms
IT1222105B (it) * 1986-09-11 1990-08-31 Drexler Tech Scheda per dati ottici,a sola lettura

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE106576C (enrdf_load_stackoverflow) *
DE469826C (de) * 1926-06-07 1931-06-06 Mimosa Akt Ges Photographisches Filmmaterial zur Herstellung von Aufsichts- und Durchsichtskopien in einem Bild
DE656255C (de) * 1933-05-07 1938-02-01 Heinrich Kuehn Beidseitig beschichteter photographischer Film
BE476329A (fr) * 1946-08-13 1947-10-31 V Barra Procédé rendant infalsifiables les photographies et écritures sur tous documents d'identité ou autres
GB1493111A (en) * 1974-02-19 1977-11-23 Agfa Gevaert Production of photomasks
GB2042200B (en) * 1979-02-14 1983-03-09 Drexler Tech Laser pyrographic reflective recording medium

Also Published As

Publication number Publication date
JPS5941878B2 (ja) 1984-10-11
GB2081461B (en) 1984-03-07
DE3125715C2 (enrdf_load_stackoverflow) 1987-12-03
FR2487089A1 (fr) 1982-01-22
DE3125715A1 (de) 1982-02-25
JPS5746240A (en) 1982-03-16
GB2081461A (en) 1982-02-17

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: DREXLER TECHNOLOGY CORP.

Effective date: 19880630