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.)
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.)
Compagnie pour le Developpment des Transactions Automatiques TRANSAC
Original Assignee
Compagnie pour le Developpment des Transactions Automatiques TRANSAC
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 Compagnie pour le Developpment des Transactions Automatiques TRANSACfiledCriticalCompagnie pour le Developpment des Transactions Automatiques TRANSAC
Priority to FR7702145ApriorityCriticalpatent/FR2379130A1/fr
Publication of FR2379130A1publicationCriticalpatent/FR2379130A1/fr
Application grantedgrantedCritical
Publication of FR2379130B1publicationCriticalpatent/FR2379130B1/fr
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
G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
G06K19/06187—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with magnetically detectable marking
G06K19/06196—Constructional details
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
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
G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
G11B5/842—Coating a support with a liquid magnetic dispersion
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
Engineering & Computer Science
(AREA)
Theoretical Computer Science
(AREA)
Chemical & Material Sciences
(AREA)
Dispersion Chemistry
(AREA)
Credit Cards Or The Like
(AREA)
FR7702145A1977-01-261977-01-26Perfectionnement aux procedes d'enregistrement magnetique inalterable
GrantedFR2379130A1
(fr)