公开(公告)号：WO1987005736A1

公开(公告)日：1987-09-24

申请号：PCT/US1987000395

申请日：1987-02-27

Applicant: VERBATIM CORPORATION

Inventor： VERBATIM CORPORATION ,  BOND, Charles, R.

IPC: G11B05/00

CPC classification number: G11B5/56 ,  G11B5/00

Abstract: A magnetic disk (10) includes a pair of azimuth test tracks (30, 32) of relatively narrow trackwise width located adjacent each other so that a magnetic head (28), the azimuth of which is to be measured, straddles both tracks at the same time. Each test track includes a recording pattern comprising a series of separate, uniformly spaced magnetic domains (34) of alternating orientation, the recording pattern on one track being in a particular phase relative to the recording pattern on the other track. Upon playback, the magnetic head produces a composite playback signal comprising a series of localized peaks, the time between adjacent peaks being functionally related to head azimuth.

公开(公告)号：WO1988009992A1

公开(公告)日：1988-12-15

申请号：PCT/US1988001776

申请日：1988-05-31

Applicant: VERBATIM CORPORATION

Inventor： VERBATIM CORPORATION ,  ASHE, Philipp, R. ,  CAREY, James, R. ,  CHAMPAGNE, Patrick, Joseph

IPC: G11B23/03

CPC classification number: G11B23/0308 ,  G11B23/0316

Abstract: A cartridge (10) comprises a rigid peripheral wall (22) sandwiched between a pair of similarly rigid major surfaces (18, 20), to form a compartment containing a disk (12) arranged for rotation about a central axis (21). The cartridge obviates the need to have relative axial movement between the disk and a record/playback transducer head (60) as the cartridge is loaded into a drive mechanism. To that end, a brake mechanism (42) latches the disk axially, as well as radially, in its operative plane as the cartridge is loaded; additionally, the cartridge exposes the disk sufficiently to provide interference-free access to it by the transducer head. For that purpose, at least one of the major surfaces has a head-access opening (26) extending to the peripheral wall, which, in turn, defines a relatively narrow bridge-like member (59), comparable in width to the operative plane of the disk, extending laterally, in the disk plane, from one side to the other side of the head-access opening. The bridge-like member, in addition to simplifying loading movement, maintains cartridge rigidity across the ''throat'' of the head-access opening.

公开(公告)号：WO1998044505A1

公开(公告)日：1998-10-08

申请号：PCT/JP1997001080

申请日：1997-03-28

Applicant: VERBATIM CORPORATION ,  KURIWADA, Ken ,  YOSHIYAMA, Ryuichi

Inventor： VERBATIM CORPORATION

IPC: G11B23/087

CPC classification number: G11B23/08778 ,  G11B15/67521

Abstract: A recording tape driving belt for preventing inclusion of air between the contact surfaces of the driving belt and a recording tape so as to prevent a tracking error and reducing errors of data recorded on the recording tape. A belt driving type recording tape cartridge equipped with such a driving belt is also disclosed. The recording tape driving belt has a plurality of longitudinal grooves in the contact surface thereof, and does not substantially have any edge in section in the contact portion.

Abstract translation: 一种用于防止在驱动带的接触表面和记录带之间包含空气的记录带驱动带，以便防止跟踪误差并减少记录在记录带上的数据的错误。 还公开了一种配备有这种传动带的带驱动型记录带盒。 记录带驱动带在其接触表面中具有多个纵向槽，并且在接触部分中基本上不具有任何边缘。