GB1320754A - Recording medium - Google Patents

Recording medium

Info

Publication number
GB1320754A
GB1320754A GB1858470A GB1858470A GB1320754A GB 1320754 A GB1320754 A GB 1320754A GB 1858470 A GB1858470 A GB 1858470A GB 1858470 A GB1858470 A GB 1858470A GB 1320754 A GB1320754 A GB 1320754A
Authority
GB
United Kingdom
Prior art keywords
card
belt
coating
april
visible light
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.)
Expired
Application number
GB1858470A
Other languages
English (en)
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
Priority claimed from JP44029808A external-priority patent/JPS5214572B1/ja
Application filed by Canon Inc filed Critical Canon Inc
Publication of GB1320754A publication Critical patent/GB1320754A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/02—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the selection of materials, e.g. to avoid wear during transport through the machine
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/08—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/12—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using a selected wavelength, e.g. to sense red marks and ignore blue marks

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Credit Cards Or The Like (AREA)
GB1858470A 1969-04-17 1970-04-17 Recording medium Expired GB1320754A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP44029808A JPS5214572B1 (enrdf_load_stackoverflow) 1969-04-17 1969-04-17
JP2980969 1969-04-17
JP2980769 1969-04-17
JP3522369 1969-04-17

Publications (1)

Publication Number Publication Date
GB1320754A true GB1320754A (en) 1973-06-20

Family

ID=27459129

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1858470A Expired GB1320754A (en) 1969-04-17 1970-04-17 Recording medium

Country Status (2)

Country Link
DE (1) DE2018594A1 (enrdf_load_stackoverflow)
GB (1) GB1320754A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0262973A3 (en) * 1986-10-01 1988-11-17 Canon Kabushiki Kaisha Protective member covering device for optical recording medium and optical information recording and reading device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2703714C2 (de) * 1977-01-29 1984-04-05 Hopt + Schuler, 7210 Rottweil Maschinell lesbarer Datenträger
DE7935267U1 (de) * 1979-12-14 1980-08-07 Gesellschaft Fuer Zeit- Und Informationserfassung Mbh, 8034 Germering Identifizierungskarte

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0262973A3 (en) * 1986-10-01 1988-11-17 Canon Kabushiki Kaisha Protective member covering device for optical recording medium and optical information recording and reading device

Also Published As

Publication number Publication date
DE2018594A1 (enrdf_load_stackoverflow) 1970-12-17

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees