CA989065A - Magnetic ink recording system - Google Patents

Magnetic ink recording system

Info

Publication number: CA989065A
Authority: CA; Canada
Prior art keywords: recording system; magnetic ink; ink recording; magnetic; recording
Prior art date: 1971-12-27
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

CA159,079A

Other languages

English (en)

Other versions

CA159079S (en

Inventor

David A. Thompson

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.)

International Business Machines Corp

Original Assignee

International Business Machines Corp

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.)

1971-12-27

Filing date

1972-12-13

Publication date

1976-05-11

1972-12-13 Application filed by International Business Machines Corp filed Critical International Business Machines Corp

1976-05-11 Application granted granted Critical

1976-05-11 Publication of CA989065A publication Critical patent/CA989065A/en

Status Expired legal-status Critical Current

Links

Classifications

- 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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/33—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only
- G11B5/39—Structure or manufacture of flux-sensitive heads, i.e. for reproduction only; Combination of such heads with means for recording or erasing only using magneto-resistive devices or effects
- 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

Landscapes

Engineering & Computer Science (AREA)
Manufacturing & Machinery (AREA)
Computer Vision & Pattern Recognition (AREA)
Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
Theoretical Computer Science (AREA)
Artificial Intelligence (AREA)
Character Input (AREA)
Recording Or Reproducing By Magnetic Means (AREA)
Magnetic Heads (AREA)
Digital Magnetic Recording (AREA)
Character Discrimination (AREA)
Magnetic Record Carriers (AREA)

CA159,079A 1971-12-27 1972-12-13 Magnetic ink recording system Expired CA989065A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US21257971A	1971-12-27	1971-12-27

Publications (1)

Publication Number	Publication Date
CA989065A true CA989065A (en)	1976-05-11

Family

ID=22791618

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA159,079A Expired CA989065A (en)	1971-12-27	1972-12-13	Magnetic ink recording system

Country Status (7)

Country	Link
US (1)	US3796859A (it)
JP (1)	JPS5311174B2 (it)
CA (1)	CA989065A (it)
DE (1)	DE2257029C3 (it)
FR (1)	FR2170509A5 (it)
GB (1)	GB1362105A (it)
IT (1)	IT967902B (it)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3887944A (en) *	1973-06-29	1975-06-03	Ibm	Method for eliminating part of magnetic crosstalk in magnetoresistive sensors
DE2705439C2 (de) *	1976-02-10	1987-01-22	Denki Onkyo Co., Ltd., Tokio/Tokyo	Magnetfühler
FR2390778A1 (fr) *	1977-05-13	1978-12-08	Cii Honeywell Bull	Dispositif de lecture d'informations magnetiques
US4547824A (en) *	1982-12-17	1985-10-15	International Business Machines Corporation	Dual biasing for integrated inductive MR head
US5157245A (en) *	1988-06-29	1992-10-20	Murata Mfg. Co., Ltd.	Magnetic sensor
US4987508A (en) *	1988-12-23	1991-01-22	Eastman Kodak Company	Permanent magnet shaped to provide uniform biasing of a magnetoresistive reproduce head
JPH02309748A (ja) *	1989-05-24	1990-12-25	Murata Mfg Co Ltd	磁気ダイヤルカードおよびカードダイヤル装置
US5068519A (en) *	1990-01-10	1991-11-26	Brandt, Inc.	Magnetic document validator employing remanence and saturation measurements
US5266786A (en) *	1991-10-01	1993-11-30	Ncr Corporation	Magnetoresistive head for reading magnetic ink characters
US5644228A (en) *	1993-08-31	1997-07-01	Eastman Kodak Company	Permanent magnet assembly with MR and DC compensating bias
US5532584A (en) *	1993-08-31	1996-07-02	Eastman Kodak Company	MR sensor including calibration circuit wherein signals are averaged for determining a correction factor and pole pieces are shaped to reduce field in gap therebetween
US5552589A (en)	1993-08-31	1996-09-03	Eastman Kodak Company	Permanent magnet assembly with MR element for detection/authentication of magnetic documents
US5428491A (en) *	1993-12-03	1995-06-27	Eastman Kodak Company	Magnetoresistive head with deposited biasing magnet
DE102011110138A1 (de)	2011-08-15	2013-02-21	Meas Deutschland Gmbh	Messvorrichtung zum Messen magnetischer Eigenschaften der Umgebung der Messvorrichtung
DE102011120972A1 (de) *	2011-12-13	2013-06-13	Giesecke & Devrient Gmbh	Verfahren und Vorrichtung zur Prüfung von Wertdokumenten

1971
- 1971-12-27 US US00212579A patent/US3796859A/en not_active Expired - Lifetime
1972
- 1972-09-27 IT IT29721/72A patent/IT967902B/it active
- 1972-11-16 JP JP11438972A patent/JPS5311174B2/ja not_active Expired
- 1972-11-21 DE DE2257029A patent/DE2257029C3/de not_active Expired
- 1972-12-01 GB GB5566172A patent/GB1362105A/en not_active Expired
- 1972-12-12 FR FR7245544A patent/FR2170509A5/fr not_active Expired
- 1972-12-13 CA CA159,079A patent/CA989065A/en not_active Expired

Also Published As

Publication number	Publication date
FR2170509A5 (it)	1973-09-14
DE2257029A1 (de)	1973-07-05
DE2257029B2 (de)	1980-12-18
JPS4874742A (it)	1973-10-08
DE2257029C3 (de)	1981-10-08
US3796859A (en)	1974-03-12
JPS5311174B2 (it)	1978-04-19
IT967902B (it)	1974-03-11
GB1362105A (en)	1974-07-30

Publication	Publication Date	Title
CA963739A (en)	1975-03-04	Magnetic recording tape
CA958482A (en)	1974-11-26	Magnetic recording disc
CA980184A (en)	1975-12-23	Magnetic recording element
CA989065A (en)	1976-05-11	Magnetic ink recording system
CA954624A (en)	1974-09-10	Magnetic disc recorder
CA1004766A (en)	1977-02-01	Record reading system
CA971834A (en)	1975-07-29	Magnetic recording member
AU4234772A (en)	1973-11-22	Magnetic recording medium
CA953021A (en)	1974-08-13	Magnetic recording head
IL39269A0 (en)	1972-06-28	Magnetic printing system
CA971932A (en)	1975-07-29	Tamper-proof time interval recording system
AU462249B2 (en)	1975-06-19	Magnetic record medium
CA1010309A (en)	1977-05-17	Magnetic recording media
CA980004A (en)	1975-12-16	Magnetic tape duplicating system
CA999373A (en)	1976-11-02	Magnetic recording system
CA969433A (en)	1975-06-17	Magnetic recording media
CA981533A (en)	1976-01-13	Magnetic recording medium
CA980185A (en)	1975-12-23	Magnetic recording members
CA967487A (en)	1975-05-13	Magnetic record apparatus
CA929660A (en)	1973-07-03	Magnetic tape printer
CA954623A (en)	1974-09-10	Digital recording system
GB1367531A (en)	1974-09-18	Recording systems
CA957575A (en)	1974-11-12	Magnetic recording medium
CA996264A (en)	1976-08-31	Recording carrier
CA889524A (en)	1971-12-28	Magnetic recording sheet