CA1048250A - Mode de fabrication des tetes magnetiques - Google Patents

Mode de fabrication des tetes magnetiques

Info

Publication number: CA1048250A
Authority: CA; Canada
Prior art keywords: core block; gap; pieces; pair; core
Prior art date: 1975-07-31
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

CA76256758A

Other languages

English (en)

Inventor

Tadashi Morokuma

Naotsune Tsuda

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.)

Olympus Corp

Original Assignee

Olympus Optical Co Ltd

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.)

1975-07-31

Filing date

1976-07-12

Publication date

1979-02-13

1975-07-31 Priority claimed from JP50093768A external-priority patent/JPS5217808A/ja

1975-10-20 Priority claimed from JP12672475A external-priority patent/JPS5250221A/ja

1976-05-08 Priority claimed from JP5252576A external-priority patent/JPS52135708A/ja

1976-07-12 Application filed by Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd

1979-02-13 Application granted granted Critical

1979-02-13 Publication of CA1048250A publication Critical patent/CA1048250A/fr

Status Expired legal-status Critical Current

Links

230000005291 magnetic effect Effects 0.000 title claims abstract description 16
238000004519 manufacturing process Methods 0.000 title claims abstract description 15
239000000463 material Substances 0.000 claims abstract description 26
239000010409 thin film Substances 0.000 claims abstract description 19
239000012466 permeate Substances 0.000 claims abstract description 6
239000011521 glass Substances 0.000 claims description 17
230000008018 melting Effects 0.000 claims description 6
238000002844 melting Methods 0.000 claims description 6
239000012634 fragment Substances 0.000 claims description 4
238000010438 heat treatment Methods 0.000 claims description 4
230000008020 evaporation Effects 0.000 claims description 3
238000001704 evaporation Methods 0.000 claims description 3
238000009740 moulding (composite fabrication) Methods 0.000 abstract 3
238000000034 method Methods 0.000 description 6
239000000919 ceramic Substances 0.000 description 4
125000006850 spacer group Chemical group 0.000 description 4
210000003298 dental enamel Anatomy 0.000 description 3
239000011888 foil Substances 0.000 description 3
239000011261 inert gas Substances 0.000 description 3
239000000843 powder Substances 0.000 description 3
IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
230000002411 adverse Effects 0.000 description 2
239000003570 air Substances 0.000 description 2
239000003302 ferromagnetic material Substances 0.000 description 2
239000000155 melt Substances 0.000 description 2
239000002184 metal Substances 0.000 description 2
239000006060 molten glass Substances 0.000 description 2
239000002985 plastic film Substances 0.000 description 2
239000012080 ambient air Substances 0.000 description 1
230000015572 biosynthetic process Effects 0.000 description 1
239000010445 mica Substances 0.000 description 1
229910052618 mica group Inorganic materials 0.000 description 1
229910052757 nitrogen Inorganic materials 0.000 description 1
229920000136 polysorbate Polymers 0.000 description 1
NQLVQOSNDJXLKG-UHFFFAOYSA-N prosulfocarb Chemical compound CCCN(CCC)C(=O)SCC1=CC=CC=C1 NQLVQOSNDJXLKG-UHFFFAOYSA-N 0.000 description 1
108010003641 statine renin inhibitory peptide Proteins 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
- G11B5/23—Gap features
- 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
- G11B5/133—Structure or manufacture of heads, e.g. inductive with cores composed of particles, e.g. with dust cores, with ferrite cores with cores composed of isolated magnetic particles
- G11B5/1335—Assembling or shaping of elements
- 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
- G11B5/193—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features the pole pieces being ferrite or other magnetic particles

Landscapes

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

CA76256758A 1975-07-31 1976-07-12 Mode de fabrication des tetes magnetiques Expired CA1048250A (fr)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
JP50093768A JPS5217808A (en)	1975-07-31	1975-07-31	Manufacturing method of magnetic head
JP12672475A JPS5250221A (en)	1975-10-20	1975-10-20	Producing serrated magnetic heads
JP5252576A JPS52135708A (en)	1976-05-08	1976-05-08	Method of manufacturing magnetic head

Publications (1)

Publication Number	Publication Date
CA1048250A true CA1048250A (fr)	1979-02-13

Family

ID=27294652

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA76256758A Expired CA1048250A (fr)	1975-07-31	1976-07-12	Mode de fabrication des tetes magnetiques

Country Status (2)

Country	Link
CA (1)	CA1048250A (fr)
DE (1)	DE2634182A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS53124410A (en) *	1977-03-16	1978-10-30	Olympus Optical Co Ltd	Production of magnetic head

1976
- 1976-07-12 CA CA76256758A patent/CA1048250A/fr not_active Expired
- 1976-07-29 DE DE19762634182 patent/DE2634182A1/de active Pending

Also Published As

Publication number	Publication date
DE2634182A1 (de)	1977-02-03

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