JPS4937529B1 - - Google Patents
Info
- Publication number
- JPS4937529B1 JPS4937529B1 JP45100113A JP10011370A JPS4937529B1 JP S4937529 B1 JPS4937529 B1 JP S4937529B1 JP 45100113 A JP45100113 A JP 45100113A JP 10011370 A JP10011370 A JP 10011370A JP S4937529 B1 JPS4937529 B1 JP S4937529B1
- Authority
- JP
- Japan
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR 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
- G06K19/06—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
- G06K19/08—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 using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
- G06K19/10—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 using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards
- G06K19/12—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 using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards the marking being sensed by magnetic means
-
- 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
- G11B5/845—Coating a support with a liquid magnetic dispersion in a magnetic field
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5578769 | 1969-11-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS4937529B1 true JPS4937529B1 (en) | 1974-10-09 |
Family
ID=10474880
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP45100113A Pending JPS4937529B1 (en) | 1969-11-14 | 1970-11-13 |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS4937529B1 (en) |
DE (1) | DE2055357C3 (en) |
FR (1) | FR2069355A5 (en) |
GB (1) | GB1331604A (en) |
NL (1) | NL170342C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4960624U (en) * | 1972-09-06 | 1974-05-28 | ||
JPS53160436U (en) * | 1977-05-21 | 1978-12-15 |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3878367A (en) * | 1973-05-02 | 1975-04-15 | Minnesota Mining & Mfg | Magnetic security document and method for making same |
US4237189A (en) * | 1973-10-31 | 1980-12-02 | Robert J. Deffeyes | Polymodal magnetic recording media process for making and verifying the same and compositions useful therein |
US4186944A (en) | 1974-04-17 | 1980-02-05 | Emi Limited | Security document |
GB1510105A (en) * | 1974-04-17 | 1978-05-10 | Emi Ltd | Printing |
GB1519142A (en) * | 1974-07-04 | 1978-07-26 | Emi Ltd | Detection of magnetic patterns |
US4197989A (en) * | 1974-10-16 | 1980-04-15 | Emi Limited | Magnetic recording |
US4114029A (en) * | 1974-10-16 | 1978-09-12 | E M I Limited | Magnetic recording |
DE2752895A1 (en) * | 1976-12-06 | 1978-06-08 | Emi Ltd | METHOD FOR PRODUCING A MATERIAL LAYER, THE SURFACE OF WHICH HAS A SCANABLE PATTERN, AS WELL AS A SECURITY DOCUMENT SYSTEM |
GB1593377A (en) * | 1976-12-10 | 1981-07-15 | Emi Ltd | Security document and system |
JPS6057130B2 (en) * | 1977-01-14 | 1985-12-13 | 富士写真フイルム株式会社 | Manufacturing method for multilayer magnetic recording tape |
US4242400A (en) * | 1977-10-15 | 1980-12-30 | E M I Limited | Magnetically structured materials |
EP0024800A1 (en) * | 1979-08-04 | 1981-03-11 | EMI Limited | Security document and system |
DE2950129A1 (en) | 1979-12-13 | 1981-06-19 | BASF Corp., New York, N.Y. | METHOD AND DEVICE FOR CHECKING THE AUTHENTICITY OF RECORDING CARRIERS TO BE SECURED AGAINST COUNTERFEITING |
DE2950174A1 (en) | 1979-12-13 | 1981-06-19 | Basf Ag, 6700 Ludwigshafen | METHOD AND DEVICE FOR CHECKING THE AUTHENTICITY OF RECORDING CARRIERS TO BE SECURED AGAINST COUNTERFEITING |
JPS56117336A (en) * | 1980-02-19 | 1981-09-14 | Sony Corp | Manufacture of magnetic recording medium |
JPS56119938A (en) * | 1980-02-22 | 1981-09-19 | Sony Corp | Production of magnetic recording medium |
EP0025636A3 (en) * | 1980-07-07 | 1981-06-10 | General Kinetics, Incorporated | Perpetuation of information in magnetically recorded medium |
EP0094775B1 (en) * | 1982-05-18 | 1989-01-04 | EMI Limited | A method of preparing and reading information which is permananently recorded on a magnetic layer |
US4743490A (en) * | 1986-02-24 | 1988-05-10 | Minnesota Mining And Manufacturing Company | Counterfeit-resistant magnetic recording tape |
US4985614A (en) * | 1987-01-16 | 1991-01-15 | Rand Mcnally & Company | Object verification apparatus and method |
US4906988A (en) * | 1987-01-27 | 1990-03-06 | Rand Mcnally & Co. | Object verification system and method |
US5216229A (en) * | 1989-06-05 | 1993-06-01 | Rand Mcnally & Company | Verifiable object having incremental key |
DE3938055A1 (en) * | 1989-11-16 | 1991-05-23 | Merck Patent Gmbh | MATERIALS COATED WITH PLAIN-SHAPED PIGMENTS |
US5177344A (en) * | 1990-10-05 | 1993-01-05 | Rand Mcnally & Company | Method and appparatus for enhancing a randomly varying security characteristic |
US5480685A (en) * | 1993-10-22 | 1996-01-02 | Tomoegawa Paper Co., Ltd. | Method of making a magnetic recording medium comprising two magnetic layers |
DE4439455A1 (en) * | 1994-11-04 | 1996-05-09 | Basf Ag | Process for the production of coatings with three-dimensional optical effects |
GB2309568B (en) * | 1996-01-25 | 1999-09-29 | Central Research Lab Ltd | Method of identifying a data carrier |
GB9621000D0 (en) * | 1996-10-09 | 1996-11-27 | Flying Null Ltd | Magnetic tags and techniques |
GB2319644B (en) | 1996-11-23 | 2000-01-12 | Central Research Lab Ltd | A record carrier |
DE19882776T1 (en) * | 1997-11-10 | 2000-11-16 | Thorn Secure Science Ltd | Procedure for marking an article |
DE10149126A1 (en) * | 2001-10-05 | 2003-04-10 | Flexchip Ag | Production of a screen used for a transponder comprises applying ferromagnetic particles to a region of the substrate having the spatial expansion of the antenna structure of a transponder, aligning the ferromagnetic particles, etc. |
AT504444A1 (en) * | 2002-11-28 | 2008-05-15 | Hueck Folien Gmbh | SECURITY ELEMENTS WITH COMBINED FEATURES TO BE RECOGNIZED BY MACHINE |
US7950587B2 (en) | 2006-09-22 | 2011-05-31 | The Board of Regents of the Nevada System of Higher Education on behalf of the University of Reno, Nevada | Devices and methods for storing data |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2796359A (en) * | 1952-07-05 | 1957-06-18 | Audio Devices Inc | Production of magnetic sound recording tape |
US3430200A (en) * | 1967-06-30 | 1969-02-25 | Walter W Barney | Validator apparatus for magnetic credit cards and the like |
-
1969
- 1969-11-14 GB GB1331604D patent/GB1331604A/en not_active Expired
-
1970
- 1970-11-06 NL NL7016325A patent/NL170342C/en not_active IP Right Cessation
- 1970-11-11 DE DE19702055357 patent/DE2055357C3/en not_active Expired
- 1970-11-13 FR FR7040678A patent/FR2069355A5/fr not_active Expired
- 1970-11-13 JP JP45100113A patent/JPS4937529B1/ja active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4960624U (en) * | 1972-09-06 | 1974-05-28 | ||
JPS53160436U (en) * | 1977-05-21 | 1978-12-15 |
Also Published As
Publication number | Publication date |
---|---|
NL170342B (en) | 1982-05-17 |
DE2055357C3 (en) | 1981-08-27 |
DE2055357A1 (en) | 1971-05-27 |
DE2055357B2 (en) | 1980-11-13 |
NL170342C (en) | 1982-10-18 |
FR2069355A5 (en) | 1971-09-03 |
GB1331604A (en) | 1973-09-26 |
NL7016325A (en) | 1971-05-18 |