G11B15/64

METHODS FOR SELECTING WRAP ANGLE FOR INDUCING TAPE TENTING ABOVE TRANSDUCER
20190304501 · 2019-10-03 ·

In one embodiment, a method includes determining a distance from a to an edge closest thereto and selecting a wrap angle based on the determined distance for inducing tenting of a moving magnetic recording tape in a region above the transducer whereby a resulting tent of the moving tape extends from the edge closest thereto to a minima with a tent apex therebetween. In response to a determination to move the tape over the tape bearing surface, the method includes moving the tape over the tape bearing surface, and checking for changes in the tenting characteristics. In response to determining changes are present, the method includes sequentially selecting a different wrap angle based on the determined distance for inducing a desired tenting characteristic, and checking for changes in the tenting characteristics. Moreover, the method includes selecting a final wrap angle in response to determining no significant changes are present.

METHODS FOR SELECTING WRAP ANGLE FOR INDUCING TAPE TENTING ABOVE TRANSDUCER
20190304502 · 2019-10-03 ·

In one embodiment, a computer program product for determining a wrap angle includes a computer readable storage medium having program instructions embodied therewith, wherein the computer readable storage medium is not a transitory signal per se. The program instructions are executable by a processor to cause the processor to perform a method that includes receiving, by the processor, a measurement of a distance from an edge to a transducer, receiving, by the processor, a predefined height of tenting of a magnetic recording tape above the transducer, and determining, by the processor, a wrap angle for inducing tenting of the magnetic recording tape above the transducer at the predefined height when the magnetic recording tape passes over the edge in a direction of tape travel thereacross.

Methods for selecting wrap angle for inducing tape tenting above transducer

In one general embodiment, a method includes determining a distance from a transducer of a module to an edge of the module closest thereto, and selecting a wrap angle based on the determined distance for inducing tenting of a moving magnetic recording tape in a region above the transducer. In another general embodiment, a method includes running a magnetic recording tape over a tape bearing surface having at least one edge, and detecting signals from the tape at differing wrap angles for estimating a height of tenting of the tape above a transducer at each of the wrap angles. A wrap angle is selected to provide about a predefined height of tenting of the tape above the transducer.

Tape head and system having asymmetrical construction

According to one embodiment, a method includes determining a first distance from a sensor to a first edge closest thereto, where the sensor is positioned between a lower shield and the first edge, selecting a first wrap angle based on the first distance for inducing tenting of a moving magnetic recording tape in a region above the sensor, determining a second distance from a second edge to the sensor, and selecting a second wrap angle based on the determined second distance for affecting or not affecting the tenting of a moving magnetic recording tape in the region above the sensor.

Tape head and system having asymmetrical construction

According to one embodiment, a method includes determining a first distance from a sensor to a first edge closest thereto, where the sensor is positioned between a lower shield and the first edge, selecting a first wrap angle based on the first distance for inducing tenting of a moving magnetic recording tape in a region above the sensor, determining a second distance from a second edge to the sensor, and selecting a second wrap angle based on the determined second distance for affecting or not affecting the tenting of a moving magnetic recording tape in the region above the sensor.

SEGMENTED MAGNETIC RECORDING WRITE HEAD FOR WRITING TIMING-BASED SERVO PATTERNS
20190172484 · 2019-06-06 ·

An apparatus according to one embodiment includes a plurality of first modules each having a first write transducer. The apparatus further includes a plurality of second modules each having a second write transducer. Planes of deposition of write gaps of the second write transducers are oriented at an angle of greater than 4 degrees relative to planes of deposition of write gaps of the first write transducers. The media bearing surfaces of the modules are primarily planar, and lie along offset parallel planes. An apparatus according to another embodiment includes a first module having a plurality of first write transducers. The apparatus further includes a second module having a plurality of second write transducers. Planes of deposition of write gaps of the second write transducers are oriented at an angle of greater than 4 degrees relative to planes of deposition of write gaps of the first write transducers.

TAPE HEAD AND SYSTEM HAVING ASYMMETRICAL CONSTRUCTION
20190164569 · 2019-05-30 ·

An apparatus according to one embodiment includes a module having a tape bearing surface, a first edge, and a second edge, where a tape tenting region extends from the first edge toward the second edge, the first edge being a first end of the tape tenting region, a second end of the tape tenting region being positioned between the first and second edges. The apparatus includes a guide positioned relative to the first edge for inducing tenting of a moving magnetic recording tape and a transducer positioned in the tape tenting region. In one approach, the transducer is a TMR sensor. In another approach, the tape bearing surface is planar. In yet another approach, the guide is positioned to create an inflection point of the moving magnetic recording tape at a location above the tape tenting region that is between the transducer and the second edge.

Segmented magnetic recording write head for writing timing-based servo patterns

An apparatus according to one embodiment includes a plurality of first modules each having a first write transducer, and a plurality of second modules each having a second write transducer. Planes of deposition of write gaps of the second write transducers are oriented at an angle of greater than 4 degrees relative to planes of deposition of write gaps of the first write transducers. An apparatus according to another embodiment includes a first module having a plurality of first write transducers, and a second module having a plurality of second write transducers. Planes of deposition of write gaps of the second write transducers are oriented at an angle of greater than 4 degrees relative to planes of deposition of write gaps of the first write transducers.

Tape head and system having asymmetrical construction

An apparatus according to one embodiment includes a module having a tape bearing surface, a first edge, and a second edge, where a tape tenting region extends from the first edge toward the second edge, the first edge being a first end of the tape tenting region, a second end of the tape tenting region being positioned between the first and second edges. The apparatus includes a guide positioned relative to the first edge for inducing tenting of a moving magnetic recording tape and a transducer positioned in the tape tenting region. In addition, the module has a wear coating on a media facing side of the transducer, where a peak height is defined between the peak of tenting and an upper surface of the coating. The thickness of the wear coating is in a range of between about 0.5 and about 3 times the peak height.

TAPE HEAD HAVING SUB-AMBIENT CHANNEL AND METHODS OF MANUFACTURE

An apparatus, according to one embodiment, includes a module having a tape bearing surface, an array of magnetic transducers, and a channel in the tape bearing surface. The channel has a longitudinal axis oriented about parallel to a longitudinal axis of the array of magnetic transducers for inducing tenting of a moving magnetic recording tape above the array of magnetic transducers. Moreover, the channel has a shape with a middle section of similar recession therealong between straight opposite ends.