17 results about "Magnetic carriers" patented technology

Magnetic carrier include a carrier core and a resin coat layer that coats the surface of the carrier core, and can electrostatically charge toner positively by friction. The resin coat layer contains polyimide silicone resin and silica particles.

A wireless short hop assembly includes a transmitter antenna and an integrated receiver / pulser module. A receiver antenna and a pulser assembly are consolidated into the receiver / pulser module. The transmitter antenna is configured to transmit, via magnetic flux induction, a magnetic carrier wave conveying a wireless signal to the receiver antenna. When the wireless short hop assembly is deployed on subterranean drilling bottom hole assembly (BHA) such that a shock reduction tool is interposed on the BHA between the transmitter antenna and the integrated receiver / pulser module, the integrated receiver / pulser module positions the receiver antenna closer to the shock reduction tool and the transmitter antenna than if the receiver antenna and the pulser assembly were discrete. The wireless signal as received by the receiver antenna is stronger and more stable than if the receiver antenna and the pulser assembly were discrete.

To provide a two-component developer that can suppress the decrease in the amount of charge of the developer due to the deterioration of the developer's durability in a high-temperature, high-humidity environment. [Solution] A two-component developer containing toner particles, a magnetic carrier, and inorganic fine particles B, wherein the magnetic carrier has magnetic carrier particles having a coating resin layer covering the surface of magnetic core particles, the coating resin layer contains inorganic fine particles A, at least a portion of the inorganic fine particles A is exposed on the surface of the carrier particles, the amount of inorganic fine particles B recovered by the water washing method XB is 0.01 to 0.05 parts by mass, the compression energy of the inorganic fine particles B is 75 mJ or less, and the work function WA of inorganic fine particles A, the work function WB of inorganic fine particles B, the coverage rate by inorganic fine particles A XA, the height of the protrusions of inorganic fine particles A HA, and the number-average particle size HB of inorganic fine particles B recovered by the water washing method satisfy the following formula. 0.5 ≤ |WA - WB| ≤ 10.0 0.001 ≤ XB / XA ≤ 0.010 0.5 ≤ HB / HA ≤ 4.0

The magnetic carrier of the present invention comprises a carrier core and a resin coating layer covering the surface of the carrier core, which enables the toner to become positively charged through friction. The resin coating layer comprises polyimide silicone resin and silica particles.

The present invention relates to a hydrogel construct comprising a magnetic structure and a method for manufacturing same, the method comprising: manufacturing a magnetic scaffold having a predetermined shape by curing an ink composition including magnetic particles; coating the manufactured magnetic scaffold with a hydrogel to manufacture a construct; and applying a magnetic field to the manufactured construct to deform the magnetic scaffold, thereby enabling the manufacture of a desired three-dimensional construct in various shapes.

The present invention provides an electrophotographic magnetic carrier that exhibits excellent charge imparting and charge retention capabilities even in high-temperature and high-humidity environments, as well as high durability and high-quality development capabilities, a two-component developer, and a method for manufacturing the magnetic carrier. [Solution] The magnetic carrier comprises a carrier core and a resin coating layer covering the surface of the carrier core, and can charge toner by friction. The carrier core has fine particles with a volume-average primary particle diameter of 1 μm or less in the recesses on its surface. The amount of fine particles present on the surface of the carrier core is 2% to 20% based on the number of particles when the particle size distribution of the carrier core is measured.

The disclosure provides a kind of magnetically controlled carrier visualization method, system, magnetically controlled system, storage medium, the visualization method includes: obtaining the three-dimensional coordinate data of magnetically controlled carrier and the three-dimensional scanning data of organism corresponding to several time points in preset time period;According to the three-dimensional coordinate data and the three-dimensional scanning data, determine the superimposed image corresponding to the several time points, the superimposed image is used to characterize the position of the magnetically controlled carrier in the organism.The disclosure obtains the three-dimensional coordinate data of magnetically controlled carrier and the three-dimensional scanning data of organism corresponding to several time points in preset time period, determines the superimposed image of the magnetically controlled carrier in organism corresponding to the several time points, realizes that the relative position between magnetic carrier and organism can be observed from a variety of different angles according to actual demand to facilitate user, further optimizes the control precision of magnetic carrier.

A two-component developer includes a toner particle, a magnetic carrier particle, and an inorganic fine particle B. The magnetic carrier particle includes a coating resin layer coating a magnetic core particle and including an inorganic fine particle A. At least part of the inorganic fine particle A is exposed on the carrier particle surface. A recovery amount XB of the inorganic fine particle B recovered by a water washing method is 0.01 to 0.05 parts by mass. The inorganic fine particle B has a compression energy of 75 mJ or less. The inorganic fine particles A and B satisfy designated relationship.

This application relates to the field of semiconductor packaging technology, specifically to a substrate magnetic carrier and semiconductor manufacturing equipment. The substrate magnetic carrier includes: a magnetic support base and a metal cover plate magnetically adsorbed and connected to the magnetic support base to form a receiving cavity. The receiving cavity is used to receive a substrate on which a chip to be soldered is disposed. The magnetic support base has a first protrusion for supporting the bottom surface of the substrate, and the metal cover plate has a second protrusion for pressing the top surface of the substrate. In the received state, the first and second protrusions are used to bend the substrate along the warp direction of the chip to be soldered. When the substrate is received, the originally flat substrate can be bent and deformed under the action of the first and second protrusions, so that its bent surface fits against the warped surface of the chip to be soldered. This reduces the risk of solder ball cracking or poor soldering, and improves product yield.

The application discloses a kind of FPC flatness suction positioning structures of SMT stick board station, it is related to SMT stick board station technical field, including magnetic carrier plate and first combination block, the positioning pressing plate is symmetrically movably installed in length direction on the top surface of the magnetic carrier plate, and the bottom surface of magnetic carrier plate is installed with sealing ring, the first combination block is symmetrically arranged along width side left and right of the magnetic carrier plate, and the side of magnetic carrier plate away from first combination block is symmetrically arranged with first combination clamping block, and the second combination block is symmetrically arranged along length side left and right of magnetic carrier plate.This FPC flatness suction positioning structure of SMT stick board station, by the design of combination block and combination clamping block, multiple magnetic carrier plates can be quickly spliced according to production demand, adapt to different number of FPC processing demand, overall structure is simple and stable, can effectively improve the flatness of FPC positioning when SMT stick board processing, reduce the generation of defective product, improve processing precision and processing efficiency.

The application discloses a micro device pose visual positioning method for a semiconductor substrate, a flexible magnetic positioning subsystem composed of a coil array and a magnetic sensor array arranged on the same flexible substrate is used to perform global six-degree-of-freedom coarse positioning on a magnetic carrier integrated with a permanent magnet mark; then, an imaging probe is guided to reach a target neighborhood based on the coarse positioning pose, and improved YOLO-Pose neural network is used to complete sub-pixel detection of key points of the micro device, the improved network takes CSPDarknet53 as a backbone, embeds deformable convolution and scale self-adaptive modulation, is matched with a dynamic receptive field adjustment module and a hierarchical key point regression head containing multi-scale Fourier feature coding, and finally, six-degree-of-freedom fine positioning pose of the micro device is solved through an EPnP algorithm. The application effectively overcomes the defects of insufficient positioning accuracy, susceptibility to visual interference and easy loss of micro target features of the traditional positioning.

The present application relates to the technical field of flexible circuit board production, and particularly relates to a replacement carrier clamping device and a replacement carrier clamping method. The replacement carrier clamping device comprises a conveying mechanism, a transplanting mechanism and a turnover mechanism. The conveying mechanism is used for conveying a carrier carrying a product. When the conveying mechanism conveys a non-magnetic carrier carrying a product to a preset position, the transplanting mechanism can transfer the non-magnetic carrier carrying the product to the turnover mechanism. The turnover mechanism can drive the non-magnetic carrier carrying the product to turn 180°, so that the product carried by the non-magnetic carrier is transferred to a magnetic carrier, the automatic replacement of the product from the non-magnetic carrier to the magnetic carrier is realized, the production efficiency and the operation accuracy are improved, the manpower is saved, and the structure is simple and the operation is convenient. The replacement carrier clamping method replaces the carrier carrying the product by the above-mentioned replacement carrier clamping device, improves the production efficiency and the operation accuracy, saves the manpower, and is convenient to operate.

A two-component developer comprises a toner particle, a magnetic carrier particle, and an inorganic particle B. The magnetic carrier particle includes a coating resin layer that coats a magnetic core particle and encompasses an inorganic particle A. At least a portion of the inorganic particle A is exposed on the carrier particle surface. The recovery quantity XB of the inorganic particle B, recovered by a water washing process, is 0.01 to 0.05 mass fractions. The inorganic particle B has a compression energy of 75 mJ or less. The inorganic particles A and B satisfy a defined relationship.

This invention relates to a two-component developer. The two-component developer comprises toner particles, magnetic carrier particles, and inorganic fine particles B. The magnetic carrier particles comprise a coated resin layer containing magnetic core particles and inorganic fine particles A. At least a portion of the inorganic fine particles A is exposed on the surface of the carrier particles. The recovery amount XB of the inorganic fine particles B recovered by water washing is 0.01 to 0.05 parts by mass. The inorganic fine particles B have a compressive energy of less than 75 mJ. The inorganic fine particles A and B satisfy a specified relationship.

This invention discloses a stimulus-responsive polymer magnetic bead, its preparation method, and a method for targeted extraction of ribonucleic acid (RNA), belonging to the fields of biomedical nanomaterials and molecular diagnostics. The polymer magnetic bead comprises a magnetic carrier and a stimulus-responsive polymer grafted onto its surface. This polymer contains thermosensitive N-isopropylacrylamide segments and functional monomer segments with phosphate group affinity. The preparation method includes surface bromination of the magnetic carrier, followed by grafting the copolymer via atom transfer radical polymerization. In RNA extraction applications, these magnetic beads utilize the stimulus-responsive properties of the polymer chains to achieve dynamic adsorption and static elution, enabling direct and efficient capture of RNA from tissue lysate. This invention significantly improves the concentration, purity, and integrity of extracted RNA, while simplifying the operation steps, shortening the extraction time, and greatly reducing the use of toxic reagents, offering outstanding advantages such as low cost, high efficiency, and environmental friendliness.

Magnetic carrier include a carrier core and a resin coat layer that coats the surface of the carrier core, and can electrostatically charge toner positively by friction. The resin coat layer contains polyimide silicone resin and silica particles.