Claims
- 1. A magnetic disk pack, comprising:
- a flexible magnetic disk and a protective casing rotatably accommodating said magnetic disk thereinside, said protective casing having a pair of aligned windows formed in at least upper and lower surfaces of said casing, at corresponding positions at a side of said casing, so that a magnetic head can be inserted into one of said windows to be brought into sliding contact with said magnetic disk while said disk is rotating, in a specified direction, thereby recording and reproducing information on and from said magnetic disk, wherein at least one first lug having a substantially flat inclined surface positioned so as to urge said rotating magnetic disk toward and onto said magnetic head by utilization of a positive pressure is formed along and integral with an inner part of a marginal edge of the window opposite that into which said magnetic head is inserted, said inclined surface lying in a plane which intersects a free plane of rotation of said disk at an acute angle.
- 2. A magnetic disk pack according to claim 1, wherein said lug is formed at least one of upstream and downstream sides of said magnetic head with respect to direction of rotation of said disk.
- 3. A magnetic disk pack according to claim 1 or 2, wherein at least one second lug having an inclined surface for attracting said magnetic disk toward and onto said magnetic head by utilization of a negative pressure is formed along and integral with an inner part of a marginal edge of said one window into which said magnetic head is inserted.
- 4. A magnetic disk pack according to claim 3, wherein said second lug is located at at least one of said an upstream and downstream sides of said magnetic head with respect to the direction of rotation of said disk.
- 5. A magnetic disk pack according to claim 3, wherein each of said lugs comprises a wear-resistive separate member having a low coefficient of friction fixedly mounted at the inner part of the marginal edge of respective one of said windows.
- 6. A magnetic disk pack according to claim 3, wherein each of said lugs includes a coating of a wear-resistive material having a low coefficient of friction.
- 7. A magnetic disk pack, comprising:
- a flexible magnetic disk and a protective casing rotatably accommodating said magnetic disk thereinside, said protective casing having a pair of aligned windows formed in at least upper and lower surfaces thereof, at a side thereof, so that a magnetic head can be inserted into one of said windows to be brought into sliding contact with said magnetic disk while said disk is rotating, thereby recording and reproducing information on and from said magnetic disk, wherein at least one first lug having a substantially flat inclined surface positioned so as to urge said rotating magnetic disk toward and onto said magnetic head by utilization of a negative pressure is formed along and integral with an inner part of a marginal edge of the window opposite that into which said magnetic head is inserted, said inclined surface lying in a plane which intersects a free plane of rotation of said disk at an acute angle.
- 8. A magnetic disk pack, comprising:
- a flexible magnetic disk;
- a protective casing rotatably accommodating said magnetic disk thereinside;
- a pair of aligned windows formed in upper and lower surfaces of said protective casing, said windows being respectively adapted to receive a magnetic head thereinto in a manner such that said magnetic head may contact said magnetic disk while said disk is rotating; and
- lug means integral with said protective casing and located at at least one marginal edge of at least one of said windows, and having a substantially flat surface which is inclined in a manner so as to assist the contact of said magnetic disk with a magnetic head when said disk is rotating, said surface lying in a plane which intersects a free plane of rotation of said disk at an acute angle.
Priority Claims (3)
Number |
Date |
Country |
Kind |
63-162667 |
Jul 1988 |
JPX |
|
63-169037 |
Jul 1988 |
JPX |
|
63-322014 |
Dec 1988 |
JPX |
|
Parent Case Info
This is a continuation of application Ser. No. 07/371,857 filed Jun. 27, 1989 now abandoned.
US Referenced Citations (6)
Foreign Referenced Citations (3)
Number |
Date |
Country |
0003748 |
Jan 1984 |
JPX |
0009868 |
Jan 1986 |
JPX |
0001168 |
Jan 1987 |
JPX |
Continuations (1)
|
Number |
Date |
Country |
Parent |
371857 |
Jun 1989 |
|