NL7305021A - - Google Patents

Info

Publication number: NL7305021A
Authority: NL; Netherlands

Application number

NL7305021A

Other versions

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.)

1972-04-15

Filing date

1973-04-11

Publication date

1973-10-17

1973-04-11 Application filed filed Critical

1973-10-17 Publication of NL7305021A publication Critical patent/NL7305021A/xx

1979-05-15 Publication of NL160412B publication Critical patent/NL160412B/xx

1979-10-15 Application granted granted Critical

1979-10-15 Publication of NL160412C publication Critical patent/NL160412C/xx

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
- G11B5/265—Structure or manufacture of a head with more than one gap for erasing, recording or reproducing on the same track
- 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
- G11B5/147—Structure or manufacture of heads, e.g. inductive with cores being composed of metal sheets, i.e. laminated cores with cores composed of isolated magnetic layers, e.g. sheets
- G11B5/1475—Assembling or shaping of elements
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
- Y10T29/49032—Fabricating head structure or component thereof
- Y10T29/49048—Machining magnetic material [e.g., grinding, etching, polishing]
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
- Y10T29/49032—Fabricating head structure or component thereof
- Y10T29/49055—Fabricating head structure or component thereof with bond/laminating preformed parts, at least two magnetic

Landscapes

Engineering & Computer Science (AREA)
Manufacturing & Machinery (AREA)
Magnetic Heads (AREA)

NL7305021.A 1972-04-15 1973-04-11 Werkwijze voor het vervaardigen van een magneetkopsamen- stel. NL160412C (nl)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB1747772A GB1376522A (en)	1972-04-15	1972-04-15	Manufacture of magnetic transducing heads

Publications (3)

Publication Number	Publication Date
NL7305021A true NL7305021A (de)	1973-10-17
NL160412B NL160412B (nl)	1979-05-15
NL160412C NL160412C (nl)	1979-10-15

Family

ID=10095856

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL7305021.A NL160412C (nl)	1972-04-15	1973-04-11	Werkwijze voor het vervaardigen van een magneetkopsamen- stel.

Country Status (5)

Country	Link
US (1)	US3854199A (de)
JP (1)	JPS5512654B2 (de)
DE (1)	DE2318322C3 (de)
GB (1)	GB1376522A (de)
NL (1)	NL160412C (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4044392A (en) *	1975-08-14	1977-08-23	International Business Machines Corporation	Process for making a read-while-write tape head and the product made thereby
JPS55111929A (en) *	1979-02-21	1980-08-29	Ricoh Co Ltd	Automatic focusing device
DE3377814D1 (en) *	1982-06-05	1988-09-29	Olympus Optical Co	An optical system focus-state detector
JPS59139519A (ja) *	1983-01-31	1984-08-10	松下電工株式会社	反射型光電スイツチ
JPS59180475A (ja) *	1983-03-31	1984-10-13	Matsushita Electric Works Ltd	反射型光電スイツチ
JPS6017414A (ja) *	1983-07-08	1985-01-29	Mitsubishi Electric Corp	焦点検出装置
US4801963A (en) *	1985-12-18	1989-01-31	Canon Kabushiki Kaisha	Focus detecting system
JPH079126Y2 (ja) *	1986-11-17	1995-03-06	旭光学工業株式会社	オートフォーカス用投光器
US5305047A (en) *	1988-10-11	1994-04-19	Canon Kabushiki Kaisha	Pattern projector having a multi-portion projection lens and camera comprising the same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2885488A (en) *	1952-09-30	1959-05-05	Rca Corp	Magnetic record transducer
US2984709A (en) *	1954-10-01	1961-05-16	Rca Corp	Magnetic head construction
US3414971A (en) *	1964-06-09	1968-12-10	Honeywell Inc	Method of fabricating read-after-write heads
FR1543786A (fr) *	1966-12-28		Ibm	Transducteur magnétique

1972
- 1972-04-15 GB GB1747772A patent/GB1376522A/en not_active Expired
1973
- 1973-04-11 NL NL7305021.A patent/NL160412C/xx not_active IP Right Cessation
- 1973-04-12 DE DE2318322A patent/DE2318322C3/de not_active Expired
- 1973-04-13 US US00350981A patent/US3854199A/en not_active Expired - Lifetime
- 1973-04-14 JP JP4262673A patent/JPS5512654B2/ja not_active Expired

Also Published As

Publication number	Publication date
NL160412C (nl)	1979-10-15
DE2318322C3 (de)	1980-12-18
US3854199A (en)	1974-12-17
NL160412B (nl)	1979-05-15
DE2318322A1 (de)	1973-10-25
JPS5512654B2 (de)	1980-04-03
DE2318322B2 (de)	1980-04-10
JPS4919810A (de)	1974-02-21
GB1376522A (en)	1974-12-04

Legal Events

Date	Code	Title	Description
1986-12-16	V1	Lapsed because of non-payment of the annual fee
1993-04-10	NL80	Abbreviated name of patent owner mentioned of already nullified patent	Owner name: INT COMPUTERS

Publication	Publication Date	Title
HU169972B (de)	1977-03-28
JPS4925811A (de)	1974-03-07
FR2187227B1 (de)	1976-05-28
JPS5512654B2 (de)	1980-04-03
JPS4961947A (de)	1974-06-15
JPS4898156A (de)	1973-12-13
FR2206548B1 (de)	1979-02-23
JPS5139046B2 (de)	1976-10-26
JPS49806U (de)	1974-01-07
JPS4987993A (de)	1974-08-22
IN138703B (de)	1976-03-20
JPS4922116A (de)	1974-02-27
JPS4962213U (de)	1974-05-31
FR2204783A1 (de)	1974-05-24
JPS4887767A (de)	1973-11-17
AU465382B2 (de)	1975-09-25
JPS5232085Y2 (de)	1977-07-22
JPS5416211Y2 (de)	1979-06-26
JPS4927711Y1 (de)	1974-07-27
CS160828B1 (de)	1975-05-04
CS153905B1 (de)	1974-03-29
JPS52103904U (de)	1977-08-08
CS160865B1 (de)	1975-05-04
JPS48107824U (de)	1973-12-13
CS159690B1 (de)	1975-01-31