DE3120549C2 - Magnetischer Aufzeichnungs- und/oder Wiedergabekopf - Google Patents

Magnetischer Aufzeichnungs- und/oder Wiedergabekopf

Info

Publication number
DE3120549C2
DE3120549C2 DE3120549A DE3120549A DE3120549C2 DE 3120549 C2 DE3120549 C2 DE 3120549C2 DE 3120549 A DE3120549 A DE 3120549A DE 3120549 A DE3120549 A DE 3120549A DE 3120549 C2 DE3120549 C2 DE 3120549C2
Authority
DE
Germany
Prior art keywords
recording
recording medium
main pole
magnetic
pole
Prior art date
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
DE3120549A
Other languages
German (de)
English (en)
Other versions
DE3120549A1 (de
Inventor
Hiroshi Kodaira Tokio/Tokyo Kobayashi
Hazime Tokio/Tokyo Machida
Motoharu Numazu Shizuoka Tanaka
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Publication of DE3120549A1 publication Critical patent/DE3120549A1/de
Application granted granted Critical
Publication of DE3120549C2 publication Critical patent/DE3120549C2/de
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
    • G11B5/02—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
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)
DE3120549A 1980-05-23 1981-05-22 Magnetischer Aufzeichnungs- und/oder Wiedergabekopf Expired DE3120549C2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6852780A JPS56165918A (en) 1980-05-23 1980-05-23 Vertical magnetic recorder and reproducer

Publications (2)

Publication Number Publication Date
DE3120549A1 DE3120549A1 (de) 1982-03-11
DE3120549C2 true DE3120549C2 (de) 1987-02-19

Family

ID=13376281

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3120549A Expired DE3120549C2 (de) 1980-05-23 1981-05-22 Magnetischer Aufzeichnungs- und/oder Wiedergabekopf

Country Status (3)

Country Link
US (1) US4413297A (en, 2012)
JP (1) JPS56165918A (en, 2012)
DE (1) DE3120549C2 (en, 2012)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5737713A (en) * 1980-08-20 1982-03-02 Seiko Epson Corp Vertical magnetic recording head
JPS5753814A (ja) * 1980-09-17 1982-03-31 Toshiba Corp Suichokujikagatajikihetsudo
JPS57162114A (en) * 1981-03-30 1982-10-05 Sony Corp Magnetic head
JPS5862810A (ja) * 1981-10-08 1983-04-14 Toshiba Corp 垂直磁化型磁気ヘッド
US4613918A (en) * 1982-04-14 1986-09-23 Matsushita Electric Industrial Co., Ltd. Perpendicular magnetic playback head and a perpendicular magnetic recording and reproducing device
JPS5940314A (ja) * 1982-08-30 1984-03-06 Sony Corp 磁気ヘツド
JPS59101004A (ja) * 1982-11-29 1984-06-11 Olympus Optical Co Ltd 録画再生装置
IE54739B1 (en) * 1982-11-29 1990-01-17 Litton Systems Inc Microwave oven with common wrap and cavity walls
JPS59152515A (ja) * 1983-02-18 1984-08-31 Victor Co Of Japan Ltd 垂直磁化型磁気ヘツド
JPS6089804A (ja) * 1983-10-24 1985-05-20 Olympus Optical Co Ltd 垂直磁気ヘツド
DE3424651A1 (de) * 1983-11-04 1985-05-15 Control Data Corp., Minneapolis, Minn. Magnetwandlerkopf
US4663676A (en) * 1985-09-13 1987-05-05 International Business Machines Return to zero vertical magnetic recording system
US6513228B1 (en) * 2000-01-05 2003-02-04 Seagate Technology Llc Method for forming a perpendicular recording read/write head
JP3799322B2 (ja) * 2002-11-15 2006-07-19 株式会社日立グローバルストレージテクノロジーズ 磁気ディスク装置
US6939654B2 (en) * 2002-12-06 2005-09-06 Ricoh Company, Ltd. Carrier and developer for developing latent electrostatic images
US7233457B2 (en) * 2003-12-16 2007-06-19 Seagate Technology Llc Head for perpendicular recording with reduced erasure
US20070205346A1 (en) * 2006-02-03 2007-09-06 Emerald Innovations Llc Device for supporting an item on a structure
JP6048189B2 (ja) 2013-02-08 2016-12-21 株式会社リコー 投影システム、画像生成プログラム、情報処理装置及び画像生成方法
US9697852B2 (en) * 2015-11-06 2017-07-04 Seagate Technology Llc Single coil turn data writer

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2562707A (en) * 1945-01-09 1951-07-31 Gen Electric Stylus for magnetic recording and reproducing apparatus
NL145697B (nl) * 1964-10-10 1975-04-15 Philips Nv Meervoudige magneetkop voor het optekenen, weergeven en/of wissen van magnetische registraties, alsmede werkwijze voor het vervaardigen van een meervoudige magneetkop.
US3376035A (en) * 1964-12-10 1968-04-02 Ibm Electromagnetic transducer manufacture
JPS545417A (en) * 1977-06-14 1979-01-16 Tdk Corp Magnetic head
JPS5587325A (en) * 1978-12-25 1980-07-02 Fujitsu Ltd Magnetic head for vertical magnetic recording
US4317148A (en) * 1980-01-24 1982-02-23 Sperry Corporation Transducer for perpendicular magnetic recording

Also Published As

Publication number Publication date
JPS56165918A (en) 1981-12-19
US4413297A (en) 1983-11-01
DE3120549A1 (de) 1982-03-11
JPH0152802B2 (en, 2012) 1989-11-10

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8128 New person/name/address of the agent

Representative=s name: SCHWABE, H., DIPL.-ING. SANDMAIR, K., DIPL.-CHEM.

D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee