FR2146334B1 - - Google Patents

Info

Publication number
FR2146334B1
FR2146334B1 FR7225818A FR7225818A FR2146334B1 FR 2146334 B1 FR2146334 B1 FR 2146334B1 FR 7225818 A FR7225818 A FR 7225818A FR 7225818 A FR7225818 A FR 7225818A FR 2146334 B1 FR2146334 B1 FR 2146334B1
Authority
FR
France
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.)
Expired
Application number
FR7225818A
Other versions
FR2146334A1 (fr
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing 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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of FR2146334A1 publication Critical patent/FR2146334A1/fr
Application granted granted Critical
Publication of FR2146334B1 publication Critical patent/FR2146334B1/fr
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73923—Organic polymer substrates
    • G11B5/73927—Polyester substrates, e.g. polyethylene terephthalate
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2017/00—Carriers for sound or information
    • B29L2017/001—Carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records
    • B29L2017/003—Records or discs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
    • Y10T428/264—Up to 3 mils
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/3167—Of cork
    • Y10T428/31674—Including natural oil or gum or rosin [e.g., linoleum, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31786—Of polyester [e.g., alkyd, etc.]

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Paints Or Removers (AREA)
FR7225818A 1971-07-19 1972-07-18 Expired FR2146334B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16391571A 1971-07-19 1971-07-19

Publications (2)

Publication Number Publication Date
FR2146334A1 FR2146334A1 (fr) 1973-03-02
FR2146334B1 true FR2146334B1 (fr) 1976-08-13

Family

ID=22592154

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7225818A Expired FR2146334B1 (fr) 1971-07-19 1972-07-18

Country Status (7)

Country Link
US (1) US3772081A (fr)
JP (1) JPS5223721B1 (fr)
CA (1) CA958634A (fr)
DE (1) DE2235732B2 (fr)
FR (1) FR2146334B1 (fr)
GB (1) GB1403383A (fr)
SE (1) SE381941B (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3874586A (en) * 1972-12-18 1975-04-01 Addressograph Multigraph Information-carrying article and reading apparatus and method
US4515830A (en) * 1983-11-29 1985-05-07 Rca Corporation Solvent-cast capacitive high density information disc
WO1989008549A1 (fr) * 1988-03-07 1989-09-21 Leigh-Mardon Pty. Limited Stratifie interactif avec les micro-ondes
US4935835A (en) * 1988-11-10 1990-06-19 Insite Peripherals, Inc. Magnetic media containing reference feature and methods for referencing magnetic head position to the reference feature
US5589247A (en) * 1992-12-22 1996-12-31 Minnesota Mining And Manufacturing Company Magnetic recording medium having an embossed backcoat layer
US5912791A (en) * 1997-03-14 1999-06-15 Seagate Technology, Inc. Landing zone design for a magnetic disc

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2501126A (en) * 1946-10-18 1950-03-21 Indiana Steel Products Co Magnetic record medium
US2857476A (en) * 1953-07-22 1958-10-21 Joseph P Kleiber System of electro-magnetic recording
US2844665A (en) * 1954-04-15 1958-07-22 Sound Engineering Magnetic recording device
US3159078A (en) * 1954-07-09 1964-12-01 Kalart Co Inc Device for viewing a photographic slide and reproducing intelligence associated therewith
US2819186A (en) * 1956-01-19 1958-01-07 Reeves Soundcraft Corp Magnetic recording tape
US3149996A (en) * 1960-11-16 1964-09-22 Basf Ag Magnetic record member
NL131590C (fr) * 1963-09-13 1900-01-01
US3502761A (en) * 1967-09-25 1970-03-24 Panayotis C Dimitracopoulos Method of forming magnetic record discs
US3566356A (en) * 1968-02-29 1971-02-23 Minnesota Mining & Mfg Magnetic recording document and method
US3627330A (en) * 1969-10-30 1971-12-14 Panayotis C Dimitracopoulos Pregrooved magnetic tracks

Also Published As

Publication number Publication date
US3772081A (en) 1973-11-13
SE381941B (sv) 1975-12-22
CA958634A (en) 1974-12-03
GB1403383A (en) 1975-08-28
DE2235732B2 (de) 1977-01-27
DE2235732A1 (de) 1973-02-01
FR2146334A1 (fr) 1973-03-02
JPS5223721B1 (fr) 1977-06-27

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Legal Events

Date Code Title Description
ST Notification of lapse