GB2005454A - Magnetic-Disk files - Google Patents
Magnetic-Disk filesInfo
- Publication number
- GB2005454A GB2005454A GB7831245A GB7831245A GB2005454A GB 2005454 A GB2005454 A GB 2005454A GB 7831245 A GB7831245 A GB 7831245A GB 7831245 A GB7831245 A GB 7831245A GB 2005454 A GB2005454 A GB 2005454A
- Authority
- GB
- United Kingdom
- Prior art keywords
- base
- disk
- file
- spindle assembly
- lie
- 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.)
- Granted
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
- G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
- G11B5/54—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/22—Guiding record carriers not specifically of filamentary or web form, or of supports therefor from random access magazine of disc records
- G11B17/30—Guiding record carriers not specifically of filamentary or web form, or of supports therefor from random access magazine of disc records wherein the playing unit is moved according to the location of the selected record
Landscapes
- Moving Of Heads (AREA)
- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
Abstract
A disk file of the accessing head type has a disk/spindle assembly supported by and within an enclosure wail base, enclosing the assembly about its axis of rotation. The disk/spindle assembly centre of gravity is located on the neutral plane of the base. Actuators for moving the read/write heads of the file are predominantly supported by land lie within the enclosure wall base so that their centres of force lie as close as possible to the neutral plane. This file structure minimises both dynamic and static off-track error resulting from out-of-plane bending of the base due to actuator reaction forces or thermal effects. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US83834677A | 1977-09-30 | 1977-09-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2005454A true GB2005454A (en) | 1979-04-19 |
GB2005454B GB2005454B (en) | 1982-02-10 |
Family
ID=25276871
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7831245A Expired GB2005454B (en) | 1977-09-30 | 1978-07-26 | Disc file with enclosure wall base |
Country Status (17)
Country | Link |
---|---|
JP (1) | JPS5455408A (en) |
AR (1) | AR221066A1 (en) |
BR (1) | BR7805656A (en) |
CA (1) | CA1109557A (en) |
CH (1) | CH629617A5 (en) |
DE (1) | DE2830828A1 (en) |
DK (1) | DK151739C (en) |
FI (1) | FI67141C (en) |
FR (1) | FR2404886A1 (en) |
GB (1) | GB2005454B (en) |
IE (1) | IE47039B1 (en) |
IT (1) | IT1174388B (en) |
NL (1) | NL7809812A (en) |
NO (1) | NO150255C (en) |
SE (1) | SE426112B (en) |
SU (1) | SU921475A3 (en) |
ZA (1) | ZA784308B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0222939A1 (en) * | 1985-10-31 | 1987-05-27 | International Business Machines Corporation | Disk file with in-hub motor |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57191871A (en) * | 1981-05-22 | 1982-11-25 | Hitachi Ltd | Magnetic disk storing device |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3815150A (en) * | 1972-06-23 | 1974-06-04 | Memorex Corp | Flexible disc drive |
-
1978
- 1978-05-25 CA CA304,089A patent/CA1109557A/en not_active Expired
- 1978-07-12 FR FR7821340A patent/FR2404886A1/en active Granted
- 1978-07-13 DE DE19782830828 patent/DE2830828A1/en active Granted
- 1978-07-26 GB GB7831245A patent/GB2005454B/en not_active Expired
- 1978-07-28 IE IE1537/78A patent/IE47039B1/en not_active IP Right Cessation
- 1978-07-28 ZA ZA784308A patent/ZA784308B/en unknown
- 1978-08-10 CH CH851678A patent/CH629617A5/en not_active IP Right Cessation
- 1978-08-31 BR BR7805656A patent/BR7805656A/en unknown
- 1978-09-01 SE SE7809227A patent/SE426112B/en not_active IP Right Cessation
- 1978-09-07 IT IT27411/78A patent/IT1174388B/en active
- 1978-09-08 JP JP10987878A patent/JPS5455408A/en active Granted
- 1978-09-27 FI FI782943A patent/FI67141C/en not_active IP Right Cessation
- 1978-09-28 NO NO783288A patent/NO150255C/en unknown
- 1978-09-28 NL NL7809812A patent/NL7809812A/en not_active Application Discontinuation
- 1978-09-28 SU SU782670598A patent/SU921475A3/en active
- 1978-09-29 AR AR273894A patent/AR221066A1/en active
- 1978-09-29 DK DK432678A patent/DK151739C/en not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0222939A1 (en) * | 1985-10-31 | 1987-05-27 | International Business Machines Corporation | Disk file with in-hub motor |
US4743995A (en) * | 1985-10-31 | 1988-05-10 | International Business Machines Corporation | Disk file with in-hub motor |
Also Published As
Publication number | Publication date |
---|---|
CH629617A5 (en) | 1982-04-30 |
DE2830828B2 (en) | 1980-05-08 |
CA1109557A (en) | 1981-09-22 |
DK151739C (en) | 1988-06-13 |
IT7827411A0 (en) | 1978-09-07 |
NO150255B (en) | 1984-06-04 |
SU921475A3 (en) | 1982-04-15 |
DK151739B (en) | 1987-12-28 |
FI67141C (en) | 1985-01-10 |
FR2404886B1 (en) | 1984-11-16 |
FI67141B (en) | 1984-09-28 |
NO150255C (en) | 1984-09-12 |
NL7809812A (en) | 1979-04-03 |
SE426112B (en) | 1982-12-06 |
NO783288L (en) | 1979-04-02 |
SE7809227L (en) | 1979-03-31 |
ZA784308B (en) | 1980-02-27 |
JPS5455408A (en) | 1979-05-02 |
DK432678A (en) | 1979-03-31 |
FI782943A (en) | 1979-03-31 |
DE2830828C3 (en) | 1981-01-15 |
GB2005454B (en) | 1982-02-10 |
AR221066A1 (en) | 1980-12-30 |
IE781537L (en) | 1979-03-30 |
IE47039B1 (en) | 1983-11-30 |
IT1174388B (en) | 1987-07-01 |
JPS5756151B2 (en) | 1982-11-27 |
BR7805656A (en) | 1979-04-17 |
DE2830828A1 (en) | 1979-04-05 |
FR2404886A1 (en) | 1979-04-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19920726 |