Abstract:
In one general embodiment, an apparatus includes at least two modules, each of the modules having an array of transducers, wherein the at least two modules are fixed relative to each other, wherein an axis of each array is defined between opposite ends thereof, wherein the axes of the arrays are oriented about parallel to each other, wherein the array of a first of the modules is offset from the array of a second of the modules in a first direction parallel to the axis of the array of the second module such that the transducers of the first module are about aligned with the transducers of the second module in an intended direction of tape travel thereacross; and a mechanism for orienting the modules about an axis orthogonal to the plane in which the arrays reside to control a transducer pitch presented to a tape.
Abstract:
PROBLEM TO BE SOLVED: To achieve a higher data storage density in the data storage system of a tape base. SOLUTION: A magnetic head having a tape bearing surface according to one embodiment includes a plurality of writers, each writer having first and second poles each having a pole tip positioned towards the tape bearing surface, a front gap defined between the pole tips, and a back gap defined along an electrical coupling of the poles at portions thereof positioned away from the tape bearing surface; wherein widths of the front and back gaps are defined in a direction parallel to the tape bearing surface and parallel to planes of deposition thereof, wherein a ratio of the width of the back gap to the width of the front gap is less than about 3:1. Various embodiments of a magnetic recording tape are also disclosed. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To compensate for tape lateral expansion and contraction about a head having readers with a track width that changes. SOLUTION: A tape head 300 according to one embodiment includes an array of readers, each of the readers having a track width TW, wherein the track width of an inner reader 308 of the array is greater than the track width of an outer reader 306 relative thereto. A tape head, according to another embodiment, includes an array of readers, with each of the readers having a track width, wherein the track width of at least some of the readers progressively decrease, in a direction along the array from a middle of the array towards an end of the array. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
Bei einer allgemeinen Ausführungsform beinhaltet eine Vorrichtung zumindest zwei Module, wobei jedes der Module ein Array von Wandlern aufweist, wobei die zumindest zwei Module im Verhältnis zueinander feststehend sind, wobei eine Achse jedes Arrays zwischen gegenüberliegenden Enden davon definiert ist, wobei die Achsen der Arrays ungefähr parallel zueinander orientiert sind, wobei das Array eines ersten der Module von dem Array eines zweiten der Module in einer ersten Richtung parallel zu der Achse des Arrays des zweiten Moduls so versetzt ist, dass die Wandler des ersten Moduls ungefähr mit den Wandlern des zweiten Moduls in einer beabsichtigten Richtung eines Bandlaufs darüber ausgerichtet sind; und einen Mechanismus zum Orientieren der Module um eine Achse orthogonal zu der Ebene, in der sich die Arrays befinden, zum Steuern eines Wandlerabstands, mit dem ein Band konfrontiert wird.
Abstract:
A media abrasivity testing system includes a carrier 402 for receiving a module 204, a transport mechanism 404 for running a tape 406 across a tape bearing surface 209 of the module, and a measuring device 412 for measuring an extent of wear of a coating on a tape bearing surface of the module. The coating may be transparent and the measuring device may be an ellipsometer or a stylus profiler. The module can include a body having a tape bearing surface, the body having an approximate tape bearing surface profile and dimensions as a module of interest. The module may be an operative module for a tape head or can be a nonfunctional dummy. A method of testing can include measuring an initial coating thickness on a tape bearing surface of a module in a carrier, running a tape across the tape bearing surface, and at intervals, measuring a residual thickness of the coating.
Abstract:
Ein Verfahren gemäß einer Ausführungsform enthält Erfassen von Informationen darüber, wie eine Anordnung aus Schreibeinrichtungen auf ein magnetisches Medium bei überlappendem Aufzeichnen schreibt und/oder schreiben soll, und unter Verwendung der erfassten Informationen Berechnen von Daten, die eine seitliche Schreibposition beschreiben, zum Verwenden beim Schreiben, so dass Kanten überlappender Spuren gemäß einem Format ausgerichtet sind. Ein Verfahren gemäß einer weiteren Ausführungsform enthält Erhalten eines seitlichen Versatzes von einer nominellen Schreibposition und Anwenden des seitlichen Versatzes zum Neupositionieren einer Schreibposition einer Anordnung aus Schreibeinrichtungen relativ zu einer nominellen Schreibposition beim Schreiben in einer ersten Richtung. Ein Produkt gemäß einer Ausführungsform enthält ein magnetisches Aufzeichnungsmedium; und Daten, die angeben, ob ein seitlicher Versatz der Schreibposition beim Schreiben verwendet wurde.
Abstract:
In one general embodiment, an apparatus includes at least two modules, each of the modules having an array of transducers, wherein the at least two modules are fixed relative to each other, wherein an axis of each array is defined between opposite ends thereof, wherein the axes of the arrays are oriented about parallel to each other, wherein the array of a first of the modules is offset from the array of a second of the modules in a first direction parallel to the axis of the array of the second module such that the transducers of the first module are about aligned with the transducers of the second module in an intended direction of tape travel thereacross; and a mechanism for orienting the modules about an axis orthogonal to the plane in which the arrays reside to control a transducer pitch presented to a tape.
Abstract:
A magnetic head assembly with an air bearing surface (ABS) layer over a double-shielded magnetoresistive (MR) sensor and a write gap formed between two spaced magnetic pole tips, with an optional write-gap shield disposed so that one magnetic pole tip is disposed between the write-gap shield and the other magnetic pole tip. At least one of the MR element shields is electrically connected to one of the MR signal lead conductors (preferably the one having the most positive potential) and the one magnetic pole tip (and/or the optional write-gap shield) is coupled to the clamped MR element shield with an electrical conductor. For multi-track read/write arrays, the connection between adjacent reader shield and writer pole and/or shield is provided independently for each read/write pair in the array, thereby equalizing the voltage environments to reduce variations in the chemical/mechanical erosion of the read and write head ABS layers.
Abstract:
A magnetic head assembly with an air bearing surface (ABS) layer over a double-shielded magnetoresistive (MR) sensor and a write gap formed between two spaced magnetic pole tips, with an optional write-gap shield disposed so that one magnetic pole tip is disposed between the write-gap shield and the other magnetic pole tip. At least one of the MR element shields is electrically connected to one of the MR signal lead conductors (preferably the one having the most positive potential) and the one magnetic pole tip (and/or the optional write-gap shield) is coupled to the clamped MR element shield with an electrical conductor. For multi-track read/write arrays, the connection between adjacent reader shield and writer pole and/or shield is provided independently for each read/write pair in the array, thereby equalizing the voltage environments to reduce variations in the chemical/mechanical erosion of the read and write head ABS layers.
Abstract:
A tape movement constraint is provided for a tape drive system which moves a tape longitudinally along a tape path across a tape head, the tape having longitudinal tracks. The tape head has a track following servo system for moving the head laterally for following lateral movement of the tracks, where the tape is subject to lateral transient movement. A tape roller bearing closely adjacent the tape head is rotatable about a central axis parallel to the cylindrical peripheral surface, allowing the tape freedom of movement in the longitudinal direction. The tape roller bearing has a frictional cylindrical peripheral surface for contacting and engaging the surface of the tape and constraining movement of the tape in the lateral direction, thereby reducing the rate of the lateral transient movement of the tape to allow the track following servo system to follow the reduced rate lateral transient movement of the longitudinal tracks. Any potential air bearing that could form between the surface of the tape and the surface of the roller bearing is collapsed to insure that the roller bearing frictionally contacts and engages the surface of the tape.