摘要:
A method and apparatus for increasing the capacity of magnetic media storage is disclosed. More specifically, an improved two-sided magnetic tape is disclosed. In one implementation, in order to mitigate pack winding problems, a trade-off can be made between the back-coat roughness of a side of the magnetic tape and the mechanical imprint of that roughness in the recording surface of that side (e.g., compromise between roughness and recording density). For example, a recording density and coding scheme deemed appropriate for a relatively large recording head-to-media separation can be used for the “rougher” side of a two-sided tape, and the highest recording density achievable can be used for the “best” or smoothest side of the two-sided tape. Depending on the recording density/roughness match selected, an optimum capacity gain can be selected from a range of capacity gains with values between 1 and 2 (e.g., 1
摘要:
A tape drive has a take-up reel assembly and a tape guide arrangement that are each selectively actuatable for interchangeable use with magnetic recording tape of a first width or a second width. The take-up reel assembly includes at least one actuatable, retractable element that can be moved between the flanges of the take-up reel assembly, dependent on the width of the tape currently being used in the drive, and the tape guide arrangement includes actuatable guide elements movable to define a width of the tape transport path across the read/write head, also dependent on the width of the magnetic recording tape currently being used.
摘要:
A normal tape reel is disclosed, comprising a tape reel portion and a magnetic tape wound on the reel core of the tape reel portion, wherein the ratio of the winding radius R of the magnetic tape to the radius r of the reel core (R/r) is not smaller than 3.5 and the winding hardness of the magnetic tape is adjusted to a range of from 1.9 to 11.5 N.
摘要:
Disclosed are a magnetic tape capable of being wound regularly, and an apparatus and a method by which the tape is wound regularly. The tape-shaped recording medium, which includes a tape-shaped support body and a recording layer being formed on a surface of the support body, is curved laterally over its whole length and said tape-shaped recording medium being curved laterally over its whole length and having a surface arching across a whole width of the medium. Furthermore, it is preferable that a curved amount of the medium ranges from 0.5 mm/m to 4.0 mm/m and an arched amount of the medium ranges from 0.3 mm to 2.0 mm.
摘要:
A magnetic tape is packed prior to removal from a tape drive. The tape is packed by completely unwinding the tape and then completely rewinding the tape without reading or writing to the tape. Completely unwinding the tape and then completely rewinding the tape reduces air entrainment and thereby reduces the susceptibility of the tape to damage after removal from the tape drive.
摘要:
A tape winding method of the present invention comprises a winding process for winding tape on a periphery of a hub by rotating the hub so that one end surface of a wound roll, which consists of the tape having a base film and being wound, becomes concave; and a heating treatment process for performing a heating treatment for the wound roll within a predetermined temperature range just under a glass transition temperature of the base film.
摘要:
A receiving surface (625) for use in the supersonic welding of the welding boss (620) of an M cassette tape reel (612a) is composed of the lower surface of a ring portion (626) which is formed so as to extend annularly along the base end of a hub central portion (621) formed in the bottom surface (616a) of a lower reel (616) and also which is projected downward (in FIG. 2) by a given amount from the bottom surface (616a). That is, the receiving surface (625) is situated slightly outside in the radial direction from directly below the welding boss (620).
摘要:
A method and apparatus to dispose a tape around the hub portion of a rotatable reel disposed within a tape cartridge, said hub including a pair of flanges extending outwardly therefrom and arranged to contain said tape, each of said flanges having an inner surface, said tape disposed on said hub such that a first edge of a first portion of said tape is disposed on the inner surface of a first flange and such that neither of the edges of a second portion of the tape are disposed on the inner surface of that first flange. A tape cartridge comprising a length of tape and rotatable reel disposed therein, said rotatable reel including a hub, and said hub including a pair of flanges extending outwardly therefrom and arranged to contain said tape, each of said flanges having an inner surface, said tape disposed on said hub such that a first edge of a first portion of said tape is disposed on the inner surface of a first flange and such that neither of the edges of a second portion of the tape are disposed on the inner surface of that first flange.
摘要:
There is provided a magnetic recording medium winding apparatus for rolling up an original roll of the magnetic recording medium, comprising: an arm member rotatably supporting a pushing roller at one end side thereof and supported turnably around the other end side thereof; a driving unit turning the arm member to push the pushing roller against the original roll of magnetic recording medium at a predetermined set pressure while rolling up the original roll; a strain sensing unit sensing a strain generated in the arm member during a pushing by the driving unit; and a control unit calculating a pressure of the pushing roller against the original roll of magnetic recording medium based on a sensed signal of the strain sensing unit and also feedback-controlling the driving unit such that the calculated pressure coincides with the set pressure at the driving unit.
摘要:
A method and apparatus to dispose a tape around the hub portion of a rotatable reel disposed within a tape cartridge, said hub including a pair of flanges extending outwardly therefrom and arranged to contain said tape, each of said flanges having an inner surface, said tape disposed on said hub such that a first edge of a first portion of said tape is disposed on the inner surface of a first flange and such that neither of the edges of a second portion of the tape are disposed on the inner surface of that first flange. A tape cartridge comprising a length of tape and rotatable reel disposed therein, said rotatable reel including a hub, and said hub including a pair of flanges extending outwardly therefrom and arranged to contain said tape, each of said flanges having an inner surface, said tape disposed on said hub such that a first edge of a first portion of said tape is disposed on the inner surface of a first flange and such that neither of the edges of a second portion of the tape are disposed on the inner surface of that first flange.