CA1059623A - Mode de fabrication d'une tete d'enregistrement/lecture - Google Patents

Mode de fabrication d'une tete d'enregistrement/lecture

Info

Publication number: CA1059623A
Authority: CA; Canada
Prior art keywords: ferrite; glass ceramic; ceramic; bars; gap
Prior art date: 1974-10-29
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

CA237,790A

Other languages

English (en)

Other versions

CA237790S (en

Inventor

John F. Bagby

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.)

Spin Physics Inc

Original Assignee

Spin Physics Inc

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.)

1974-10-29

Filing date

1975-10-16

Publication date

1979-07-31

1975-10-16 Application filed by Spin Physics Inc filed Critical Spin Physics Inc

1979-07-31 Application granted granted Critical

1979-07-31 Publication of CA1059623A publication Critical patent/CA1059623A/fr

Status Expired legal-status Critical Current

Links

230000005291 magnetic effect Effects 0.000 title claims abstract description 29
238000004519 manufacturing process Methods 0.000 title claims abstract description 17
229910000859 α-Fe Inorganic materials 0.000 claims abstract description 71
239000000919 ceramic Substances 0.000 claims abstract description 24
239000000126 substance Substances 0.000 claims abstract description 4
238000010304 firing Methods 0.000 claims abstract description 3
239000002241 glass-ceramic Substances 0.000 claims description 21
238000000034 method Methods 0.000 claims description 9
238000000151 deposition Methods 0.000 claims description 4
238000003754 machining Methods 0.000 claims 1
239000011521 glass Substances 0.000 abstract description 15
239000000463 material Substances 0.000 abstract description 12
238000000429 assembly Methods 0.000 description 3
230000000712 assembly Effects 0.000 description 3
229910010293 ceramic material Inorganic materials 0.000 description 3
239000004593 Epoxy Substances 0.000 description 2
239000006088 Fotoceram Substances 0.000 description 2
230000008021 deposition Effects 0.000 description 2
YUBJPYNSGLJZPQ-UHFFFAOYSA-N Dithiopyr Chemical compound CSC(=O)C1=C(C(F)F)N=C(C(F)(F)F)C(C(=O)SC)=C1CC(C)C YUBJPYNSGLJZPQ-UHFFFAOYSA-N 0.000 description 1
238000005299 abrasion Methods 0.000 description 1
238000010276 construction Methods 0.000 description 1
238000001816 cooling Methods 0.000 description 1
230000003247 decreasing effect Effects 0.000 description 1
230000007812 deficiency Effects 0.000 description 1
238000004031 devitrification Methods 0.000 description 1
230000003628 erosive effect Effects 0.000 description 1
230000004907 flux Effects 0.000 description 1
239000000155 melt Substances 0.000 description 1
238000002844 melting Methods 0.000 description 1
230000008018 melting Effects 0.000 description 1
238000012986 modification Methods 0.000 description 1
230000004048 modification Effects 0.000 description 1
238000005498 polishing Methods 0.000 description 1
238000004382 potting Methods 0.000 description 1
238000004544 sputter deposition Methods 0.000 description 1

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
- G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features

Landscapes

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

CA237,790A 1974-10-29 1975-10-16 Mode de fabrication d'une tete d'enregistrement/lecture Expired CA1059623A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US51935874A	1974-10-29	1974-10-29

Publications (1)

Publication Number	Publication Date
CA1059623A true CA1059623A (fr)	1979-07-31

Family

ID=24067960

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA237,790A Expired CA1059623A (fr)	1974-10-29	1975-10-16	Mode de fabrication d'une tete d'enregistrement/lecture

Country Status (6)

Country	Link
JP (1)	JPS5167119A (fr)
CA (1)	CA1059623A (fr)
DE (1)	DE2548435A1 (fr)
FR (1)	FR2289996A1 (fr)
GB (1)	GB1528599A (fr)
NL (1)	NL7512688A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5972638A (ja) *	1982-10-19	1984-04-24	Sumitomo Special Metals Co Ltd	複合型磁気ヘツドの製造方法

1975
- 1975-10-16 CA CA237,790A patent/CA1059623A/fr not_active Expired
- 1975-10-27 JP JP12917675A patent/JPS5167119A/ja active Pending
- 1975-10-28 GB GB4442875A patent/GB1528599A/en not_active Expired
- 1975-10-29 FR FR7532997A patent/FR2289996A1/fr active Granted
- 1975-10-29 NL NL7512688A patent/NL7512688A/xx not_active Application Discontinuation
- 1975-10-29 DE DE19752548435 patent/DE2548435A1/de not_active Withdrawn

Also Published As

Publication number	Publication date
GB1528599A (en)	1978-10-11
FR2289996A1 (fr)	1976-05-28
JPS5167119A (en)	1976-06-10
NL7512688A (nl)	1976-05-04
DE2548435A1 (de)	1976-05-06
FR2289996B1 (fr)	1982-01-22

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