KR910003905B1 - 자기기록매체 - Google Patents
자기기록매체 Download PDFInfo
- Publication number
- KR910003905B1 KR910003905B1 KR1019880701680A KR880701680A KR910003905B1 KR 910003905 B1 KR910003905 B1 KR 910003905B1 KR 1019880701680 A KR1019880701680 A KR 1019880701680A KR 880701680 A KR880701680 A KR 880701680A KR 910003905 B1 KR910003905 B1 KR 910003905B1
- Authority
- KR
- South Korea
- Prior art keywords
- magnetic
- recording medium
- magnetic recording
- pattern
- coercive force
- Prior art date
Links
- 230000005415 magnetization Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 description 14
- 230000004907 flux Effects 0.000 description 4
- 229910001566 austenite Inorganic materials 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229910017518 Cu Zn Inorganic materials 0.000 description 1
- 229910017752 Cu-Zn Inorganic materials 0.000 description 1
- 229910017943 Cu—Zn Inorganic materials 0.000 description 1
- 229910018605 Ni—Zn Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D15/00—Printed matter of special format or style not otherwise provided for
- B42D15/02—Postcards; Greeting, menu, business or like cards; Letter cards or letter-sheets
-
- 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
- G06K19/06187—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
- B42D25/369—Magnetised or magnetisable materials
-
- 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
-
- 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
- G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
-
- 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
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
-
- 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
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Magnetic Record Carriers (AREA)
- Paints Or Removers (AREA)
- Credit Cards Or The Like (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Abstract
Description
Claims (2)
- 보자력이 다른 3종류 이상의 패턴이 정보에 대응해서 결합되어 있는 것을 특징으로 하는 자기기록매체.
- 제 1 항에 있어서, 상기 보자력이 높은 인쇄패턴은 소망의 방향으로 미리 자화되어 있고, 그 자화방향이 정보의 일부를 부여하는 것을 특징으로 하는 자기기록매체.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-93351 | 1987-04-17 | ||
JP62093351A JPH0827933B2 (ja) | 1987-04-17 | 1987-04-17 | 磁気記録媒体 |
PCT/JP1988/000370 WO1988007938A1 (en) | 1987-04-17 | 1988-04-14 | Magnetic recording medium |
Publications (2)
Publication Number | Publication Date |
---|---|
KR890700481A KR890700481A (ko) | 1989-04-25 |
KR910003905B1 true KR910003905B1 (ko) | 1991-06-15 |
Family
ID=14079849
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019880701680A KR910003905B1 (ko) | 1987-04-17 | 1988-04-14 | 자기기록매체 |
Country Status (8)
Country | Link |
---|---|
US (1) | US4982076A (ko) |
EP (1) | EP0355162B1 (ko) |
JP (1) | JPH0827933B2 (ko) |
KR (1) | KR910003905B1 (ko) |
AU (1) | AU609475B2 (ko) |
CA (1) | CA1326906C (ko) |
DE (1) | DE3873332T2 (ko) |
WO (1) | WO1988007938A1 (ko) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0322214A (ja) * | 1989-06-20 | 1991-01-30 | Tomoegawa Paper Co Ltd | 磁気記録媒体 |
JPH04132018A (ja) * | 1990-09-20 | 1992-05-06 | Csk Corp | 磁気カード |
US5424523A (en) * | 1992-11-25 | 1995-06-13 | Kabushiki Kaisha Toshiba | Record medium and record medium processing apparatus |
US5993937A (en) * | 1993-11-30 | 1999-11-30 | Matsushita Electric Industrial Co., Ltd. | Magneto-optic recording medium and method of fabricating the same |
US6146740A (en) * | 1994-11-28 | 2000-11-14 | Matsushita Electric Industrial Co., Ltd. | Magnetic recording medium and method of fabricating the same |
US5613712A (en) * | 1995-04-21 | 1997-03-25 | Eastman Kodak Company | Magnetic fingerprint for secure document authentication |
US5616911A (en) * | 1995-05-24 | 1997-04-01 | Eastman Kodak Company | Read-only magnetic security pattern |
US6079621A (en) * | 1998-11-13 | 2000-06-27 | Chrysalis-Its Inc. | Secure card for E-commerce and identification |
DE10130553A1 (de) * | 2001-06-25 | 2003-01-09 | Forschungszentrum Juelich Gmbh | Markierungseinrichtung sowie Verfahren zum Auslesen der Markierungseinrichtung |
EP1714795A1 (de) * | 2005-04-20 | 2006-10-25 | Hueck Folien Ges.m.b.H | Sicherheitselement mit räumlich aufgelöster magnetischer Codierung, Verfahren und Vorrichtung zu dessen Herstellung und dessen Verwendung |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3627934A (en) * | 1969-04-09 | 1971-12-14 | Micro Magnetic Ind Inc | Method and apparatus for verifying magnetic records |
JPS54130B2 (ko) * | 1974-05-16 | 1979-01-06 | ||
US4104513A (en) * | 1974-10-16 | 1978-08-01 | E M I Limited | Magnetic recording |
GB1529939A (en) * | 1975-10-06 | 1978-10-25 | Emi Ltd | Method of verification of magnetic records |
GB1534859A (en) * | 1976-06-04 | 1978-12-06 | De La Rue Crosfield | Detector for documents comprising magnetizable material |
JPS58101385A (ja) * | 1981-12-10 | 1983-06-16 | Tdk Corp | 消去不能な磁気カ−ド |
JPH0678037B2 (ja) * | 1984-12-12 | 1994-10-05 | グローリー工業株式会社 | 認証識別媒体の認証装置 |
JP3154002B2 (ja) * | 1991-07-15 | 2001-04-09 | 株式会社日立メディコ | 直交受信方式の受信コイル及びこの受信コイルを用いた磁気共鳴イメージング装置 |
JPH0550899A (ja) * | 1991-08-22 | 1993-03-02 | Yoshitaka Murayama | 車体に固定する手動ジヤツキ |
JP2502239B2 (ja) * | 1992-03-27 | 1996-05-29 | 株式会社神戸製鋼所 | 圧延機の圧延工程スケジュ―ル設定方法 |
-
1987
- 1987-04-17 JP JP62093351A patent/JPH0827933B2/ja not_active Expired - Fee Related
-
1988
- 1988-04-14 WO PCT/JP1988/000370 patent/WO1988007938A1/ja active IP Right Grant
- 1988-04-14 DE DE8888903372T patent/DE3873332T2/de not_active Expired - Fee Related
- 1988-04-14 US US07/432,756 patent/US4982076A/en not_active Expired - Lifetime
- 1988-04-14 KR KR1019880701680A patent/KR910003905B1/ko not_active IP Right Cessation
- 1988-04-14 AU AU15921/88A patent/AU609475B2/en not_active Ceased
- 1988-04-14 EP EP88903372A patent/EP0355162B1/en not_active Expired - Lifetime
- 1988-04-15 CA CA000564283A patent/CA1326906C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
EP0355162A4 (en) | 1990-01-29 |
JPH0827933B2 (ja) | 1996-03-21 |
EP0355162B1 (en) | 1992-07-29 |
KR890700481A (ko) | 1989-04-25 |
AU1592188A (en) | 1988-11-04 |
AU609475B2 (en) | 1991-05-02 |
WO1988007938A1 (en) | 1988-10-20 |
CA1326906C (en) | 1994-02-08 |
EP0355162A1 (en) | 1990-02-28 |
DE3873332D1 (de) | 1992-09-03 |
DE3873332T2 (de) | 1993-03-11 |
US4982076A (en) | 1991-01-01 |
JPS63259829A (ja) | 1988-10-26 |
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Date | Code | Title | Description |
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A201 | Request for examination | ||
PA0109 | Patent application |
Patent event code: PA01091R01D Comment text: Patent Application Patent event date: 19881216 |
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PA0201 | Request for examination |
Patent event code: PA02012R01D Patent event date: 19881216 Comment text: Request for Examination of Application |
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PG1501 | Laying open of application | ||
G160 | Decision to publish patent application | ||
PG1605 | Publication of application before grant of patent |
Comment text: Decision on Publication of Application Patent event code: PG16051S01I Patent event date: 19910518 |
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E701 | Decision to grant or registration of patent right | ||
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Patent event code: PE07011S01D Comment text: Decision to Grant Registration Patent event date: 19910829 |
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