413 results about "Magnetic tape" patented technology

A main object of the present technology is to improve the reliability of a magnetic recording tape by controlling the distribution of the binder in the underlayer.The present technology provides a magnetic recording medium including a magnetic layer, an underlayer, and a base layer in this order, the underlayer containing a chlorine-containing binder, the underlayer including a part having a thickness of 130 nm or less, the part having a chlorine count equal to or more than a threshold described below:[T⁢hreshold]=[⁠an⁢ average⁢ chlorine⁢ count⁢ in⁢ the⁢ underlayer]+6×[a⁢ standard⁢ deviation⁢ determined⁢ in⁢ calculation⁢ of⁢ the⁢ average⁢ chlorine⁢ count].Furthermore, the present technology also provides a magnetic recording medium including a magnetic layer, an underlayer, and a base layer in this order, the underlayer containing a chlorine-containing binder, the underlayer including a part having a thickness of 12% or less of a thickness of the underlayer, the part having a chlorine count equal to or more than the above-described threshold.

The embodiment of the invention discloses a magnetic separation chip for cell separation and a preparation method thereof.The magnetic separation chip structurally comprises a sample layer, a functional layer, a clamp set and a magnetic field source, the sample layer is composed of a flow channel layer and a sealing film, and the flow channel layer is provided with a sheath fluid inlet, a sample inlet and a sample outlet; the sealing film is attached to the open surface of the runner layer to seal the runner; the functional layer is located below the sample layer and comprises a patterned substrate and an amorphous alloy soft magnetic strip material, the patterned substrate is provided with a counter bore groove, the amorphous alloy soft magnetic strip material is embedded into the counter bore groove, and the upper surface of the amorphous alloy soft magnetic strip material is flush with the upper surface of the substrate, right faces the sealing film and is arranged in the extending direction of the flow channel; the clamp group comprises an upper clamping plate and a lower clamping plate, the upper clamping plate is arranged above the sample layer, the lower clamping plate is arranged below the functional layer, the upper clamping plate is provided with runner holes corresponding to the inlets and the outlets, and the two are connected through bolts to clamp and fix the sample layer and the functional layer; the magnetic field source is arranged at the end where the sample outlet is located and on one side opposite to the functional layer, so that a gradient magnetic field which is gradually enhanced from the inlet to the outlet is formed in the flow channel.

Systems and methods are disclosed for retrieving information from legacy storage media with high fidelity and minimal contact. A read sensor with multiple read elements detects electromagnetic fields from tracks on a storage medium. Readings from different elements are combined to generate a composite interpretation, which can be used to, for example, generate digitized waveforms and determine if portions of tracks are damaged.

The magnetic head comprises a recording module in which a plurality of recording elements are provided, and a reproducing module in which a plurality of reproducing elements are provided. The recording module and the reproducing module are disposed along a longitudinal direction of the magnetic tape. A pair of first servo reading elements of the recording module and a pair of second servo reading elements of the reproducing module are shifted from each other by a predetermined difference along one direction in the width direction of the magnetic tape. The predetermined difference is defined based on a pitch between a plurality of tracks formed using an SMR method and a length of the recording element in the width direction of the magnetic tape.

The invention discloses storage equipment and a storage system, and relates to the technical field of magnetic tapes. The magnetic tape in the magnetic tape medium memory is accessed by the magnetic head driver in the magnetic tape medium memory, and the magnetic head driver in the magnetic tape medium memory is not used for accessing the magnetic head drivers in other magnetic tape medium memories, namely, the shared part in the storage equipment does not comprise the mechanical structure of the magnetic head driver. The problem that the storage device breaks down due to unreliable mechanical parts is reduced, and the service stability in the storage device is improved. The data processing assembly is connected with different tape medium memories through a plurality of data channels, and the plurality of tape medium memories share the data processing assembly, that is, shared parts in the storage equipment do not comprise mechanical parts, and the mechanical parts of the magnetic head driver do not need to be moved for multiple times, so that the reliability of the mechanical parts in the storage equipment is improved, and the reliability of the storage equipment is improved. And the service stability in the storage equipment can be further improved.

The invention discloses a storage and calculation integrated architecture-based convolutional code parallel pipeline decoding acceleration system and method, and the system comprises a global data scheduling module which is used for slicing convolutional code data from magnetic tape storage equipment according to a set rule and carrying out the scheduling through a multi-stage cache mechanism; the storage and calculation integrated unit array is used for storing data tiles and intermediate results output by the global data scheduling module and executing convolution operation, path metric calculation and survival path selection through a reconfigurable calculation unit; the parallel pipeline controller is used for dynamically distributing decoding tasks and controlling the pipeline rhythm of the storage and calculation integrated unit array; the self-adaptive resource configuration module is used for monitoring system load in real time and dynamically adjusting a data distribution strategy and computing resource scheduling; the verification and error correction unit is used for performing verification and error correction on the decoding result output by the storage and calculation integrated unit array and then outputting the decoding result; according to the decoding acceleration system and method, high-efficiency and low-delay convolutional code decoding is realized.

The magnetic tape includes a non-magnetic support, and a magnetic layer containing a ferromagnetic powder. A rate of change in an area ratio of a protrusion having a height of 5 nm or more and 10 nm or less, which is obtained by measuring a measurement region of 5 μm×5 μm on a surface of the magnetic layer before and after 1000 reciprocating slides with respect to an LTO 8 head at a head tilt angle of 15° in an environment of a temperature of 35° C. and a relative humidity of 80%, with an atomic force microscope, is 10.0% or less.

The objective is to provide a component mounting device, tape feeder, and cassette that can be made more compact. [Solution] The tape feeder 22 has a transport path 32 having an inlet and an outlet, and a tape transport section which, when a carrier tape CT containing parts BH is inserted into the inlet, transports it along the transport path 32 and supplies the parts BH to a parts removal position 22K in the middle of the transport path 32. The mounting head 13 picks up the parts BH from the parts removal position 22K and mounts them on the substrate KB. The cassette 23 has a storage section 55 for storing the carrier tape CT and a tape tip holding section 60 for holding the leading edge of the carrier tape CT stored in the storage section 55. The tape feeder 22 also has a cassette mounting section 39 for mounting the cassette 23.

1. The name of the design product: magnetic tape player (F-023). 2. The use of the design product: a player for playing magnetic tapes. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: front view.

This invention provides a tape suitable for edge treatment processing to cover the end faces of blanks used in paper containers. [Solution] One aspect of the present invention is a tape having a thermoplastic resin on its surface, used for processing the end faces of blanks used as the body of paper containers. The thickness of the tape is 25 to 200 μm. In the end face processing described above, the tape is positioned so that its longitudinal direction coincides with the longitudinal direction of the end face of the blank, and the tape is folded back so that the approximate center of the longitudinal direction of the tape becomes a fold, and is attached to one side and the other side of the blank so as to cover the end face of the blank.

An automatic tape processing device according to the present invention comprises: a feeding device that conveys a carrier tape, which is loaded on a tape feeder and obtained by adhering a cover tape to the top surface side of a base tape provided, at a fixed pitch, with cavities for accommodating components therein; a cutting device that cuts the base tape and the cover tape at cutting locations; and a control device that determines the cutting locations of the base tape and the cover tape according to the type of tape feeder, and controls operation of the feeding device and the cutting device such that the base tape and the cover tape are cut at the determined cutting locations.

A servo reproduction apparatus according to the present technology includes: a servo reproduction head. The servo reproduction head includes a first reproduction head portion and a second reproduction head portion. The first reproduction head portion reads a servo pattern recorded on a plurality of first servo bands, which are some of a plurality of servo bands in a magnetic tape including the plurality of servo bands. The second reproduction head portion reads a servo pattern recorded on a plurality of second servo bands, which are others of the plurality of servo bands.

A laser printer may include one or more printing platforms, each supporting a cassette from the plurality of cassettes while printing occurs on the cassette; one or more cassette hoppers, each receiving at least one of the plurality of cassettes and feeding the at least one of the plurality of cassettes to at least one printing platform; a laser emitting device for emitting a laser beam to print on the plurality of cassettes; and a method comprising: receiving information indicative of a cassette size for the selected cassette, loading the selected cassette on a printing platform, aligning the selected cassette on the printing platform with a focus plane of the laser beam based on the received information indicative of the cassette size for the selected cassette, printing the marking on a printing surface of the selected cassette; and releasing the selected cassette from the printing platform after printing the marking.

The invention discloses an HDFS (Hadoop Distributed File System) intelligent hierarchical storage method and system based on multi-dimensional popularity perception and tape library integration, and belongs to the technical field of distributed file systems, and the method comprises the following steps: expanding HDFS metadata to construct a unified namespace; acquiring data block access features and dynamically dividing hot, warm and cold data by using a K-means clustering algorithm; executing a self-adaptive grading strategy: adding a copy to hot data and storing in an SSD (Solid State Disk), maintaining a default copy to warm data and storing in a disk, and migrating cold data to a tape library and storing by adopting an erasure code; scattered storage and fault tolerance of relevance perception are realized through a message queue; metadata persistence and periodical re-evaluation are carried out, and automatic migration and dynamic adjustment of data among the SSD layer, the disk layer and the tape library layer are achieved. By adopting the method and the system, the storage strategy and the data access value are accurately matched, the storage cost is finally reduced, and the system I / O performance and the resource utilization rate are improved.

The invention discloses magnetic tape unit equipment and a storage system, and relates to the technical field of magnetic tapes. According to the method and the device, the problem that the magnetic tape in the magnetic tape unit needs to frequently turn round to access the data in the magnetic tape by the magnetic head is solved, the magnetic tape does not need to frequently turn round in the data access process, the IO delay of the magnetic tape unit is reduced, and the access efficiency of the magnetic tape unit is improved. A data area in the magnetic tape is divided into a plurality of data slices, the data slices are arranged at intervals, and every two adjacent data slices are used for storing data of the same IO flow. In the tape winding process after the magnetic tape is driven by the magnetic tape driver, the problem of reverse tape winding of the magnetic tape does not need to be considered, the magnetic tape driver can wind the magnetic tape at a relatively stable speed, and a magnetic head can still continuously access data slices arranged in the magnetic tape at intervals in the tape winding process; the tape does not need to turn around frequently, the IO delay of the tape unit equipment is reduced, and the access efficiency of the tape unit equipment is improved.

Beginning of wrap (BOW) data set reading and writing for tape drives is provided. In response to reaching an end of wrap (EOW) while writing to tape, a tape directory (TD) is updated to include first data set information for a first data set written at the EOW of a first wrap. A second data set is written using normal write procedure from a BOW of a second wrap, the second wrap following the first wrap. The first data set information is overwritten with second data set information for the second data set written at BOW. When reading a BOW data set from tape, data set information is read from a TD. Based on determining whether the data set information corresponds to a BOW data set, a target Data Set ID and a target Tape Write Pass are set for reading the BOW data set.

The magnetic tape includes: a non-magnetic support; and a magnetic layer containing a ferromagnetic powder, in which a contact angle with water, which is measured on a surface of the magnetic layer, is 95° or more and 105° or less, and standard deviation σ of the contact angle in a width direction of the surface of the magnetic layer is 1.0° or less.

1. The name of the design product: tape machine (HY-906). 2. The use of the design product: for playing audio. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

To provide a magnetic recording medium with a little deterioration in electromagnetic conversion characteristics after repeated running in a high-temperature environment.SOLUTION: In a magnetic recording medium, a protrusion height difference Δ(HD-HB) is 0.7 nm or more, in which an arithmetic mean roughness Ra measured on the surface of a magnetic layer is 2.5 nm or less, a protrusion height HD, with the height of the surrounding substrate area being 0 nm, is measured by an atomic force microscope with respect to an area identified as a dark area in a first binarized image of a backscattered electron image obtained by imaging the surface of the magnetic layer with a scanning electron microscope, and a protrusion height HB, with the height of the surrounding substrate area being 0 nm, is measured by the atomic force microscope with respect to an area identified as a bright area in a second binarized image performed on the higher gradation side than the first binarized image obtained by imaging the surface of the magnetic layer with the scanning electron microscope. A magnetic tape cartridge and a magnetic recording / reproducing device include the magnetic recording medium.SELECTED DRAWING: None

A tape connecting device (1) and a method for connecting a first tape to a second tape for providing a tape string. In the tape connecting device (1) when continuously conveying the first tape an end section of the first tape is connected to a start section of the second tape by an adhesive connection by a liquid (in particular water) arranged in a connecting section. Furthermore, the invention relates to a method for connecting two tapes, a processing system and a use of a method. The inventive tape connecting device (1) and the method can in particular be used for a continuous provision of a security tape for a security document as a banknote.

Provided is a magnetic recording medium comprising a non-magnetic support and a magnetic layer containing ferromagnetic powder, and further comprising a non-magnetic layer containing non-magnetic powder between the non-magnetic support and the magnetic layer. The average pore diameter of the magnetic layer and the non-magnetic layer is 30.0 nm or less, and the standard deviation of the pore diameter distribution of the magnetic layer and the non-magnetic layer is 30.0 nm or less.

Provided are a method, system, and computer program product in whichdata is encoded for a plurality of tracks of a tape of a tape drive, by using an error correction code (ECC) scheme that applies a single code with code word symbols that are at least 10 bits. The code word symbols are interleaved along and across parallel tracks of the tape in the tape drive.

Provided is a system, method, and computer program product for minimizing high resolution tape directory (HRTD) recovery time when a HRTD is invalid. A tape drive may load a tape in the tape drive. In response to receiving a write command or a read command at a beginning of tape (BOT) position, the tape drive may execute the write command or the read command without performing HRTD recovery. In response to receiving the write command or the read command at a position other than the BOT position, the tape drive may determine if the HRTD is valid. In response to determining the HRTD is not valid, the tape drive may clear a timer.

A wireless charging module (30, 40, 50, 60, 70), comprising a magnetic core (31, 41, 51, 61, 71), a coil (32, 42, 52, 62, 72), and a magnetic tape (T). The coil (32, 42, 52, 62, 72) and the magnetic tape (T) are disposed on a surface of the magnetic core (31, 41, 51, 61, 71) and surround a central axis (Z6, Z7) of the magnetic core (31, 41, 51, 61, 71). A curved section (T1) of the magnetic tape (T) is located between each two adjacent curved portions (621, 721) of the coil (32, 42, 52, 62, 72) in a horizontal direction, and the horizontal direction is perpendicular to the central axis (Z6, Z7).

The storage device comprises a shell structure, a magnetic tape module, an electric storage module and a control module, wherein the control module is used for writing small particle data into the electric storage module and writing large particle data into the magnetic tape module. The electric storage module can be used for storing small-particle data so as to improve the efficiency of reading and writing the small-particle data, and the magnetic tape module can be used for providing large-capacity storage capacity. The invention further provides a data processing method, and the efficiency of reading and writing the small-particle data can be improved.

1. Name of the designed product: magnetic tape cassette. 2. Use of the designed product: cassette for storing magnetic tape. 3. Design points of the designed product: in shape. 4. Picture or photo showing the design points most: design 1, perspective view 1. 5. Design 1 is designated as the basic design.

An indicator indicating a non-linearity of a servo pattern is within 15% or less of a track pitch. The track pitch is a pitch between tracks. The indicator indicates a degree of variation in the plurality of distance differences from an average value of the plurality of distance differences. The distance difference is a difference between a distance between a pair of first positions corresponding to each other in the width direction in the pair of servo patterns and a distance between a pair of second positions deviated from the pair of first positions in the width direction by a first predetermined interval in the pair of servo patterns. The plurality of distance differences are obtained by measuring the distance difference for each second predetermined interval along the width direction in the pair of servo patterns. The first predetermined interval is larger than the second predetermined interval.

A magnetic tape drive and an assembly for a tape drive are disclosed herein. The disclosed magnetic tape drive comprises a SAS-compliant tape drive module; and a USB-C to SAS assembly having one or more controllers operatively coupled to a USB-C connector and a SAS connector. The SAS connector of the USB-C to SAS assembly is operatively coupled to the SAS-compliant tape drive module. The USB-C to SAS assembly is configured to enable the magnetic tape drive to interface a USB-C-compliant computing device with the SAS-compliant tape drive module, and the USB-C to SAS assembly is configured to transmit tape commands received at the USB-C connector to the SAS-compliant tape drive module via the one or more controllers and the SAS connector. The assembly includes a SAS connector, a USB-C connector, and one or more controllers operatively coupled to the SAS connector and the USB-C connector.

The magnetic tape includes a non-magnetic support, and a magnetic layer containing a ferromagnetic powder, in which a half-width of a frictional force, which is measured on a surface of the magnetic layer with a lateral force microscope, is 200 mV or less, and standard deviation σ of the half-width of the frictional force in a width direction of the surface of the magnetic layer is 50.0 mV or less.