311 results about "Recording head" patented technology

Embodiments of the invention provide a write head for perpendicular recording in which the magnetic field intensity applied at a read element is reduced with larger write-field gradients and the distance between a write element and a read element is small. In one embodiment, a pair of magnetic bodies for shielding a read element are provided on the leading and trailing sides of the read element respectively and whichever one of the two shields is the longer in the length from the air bearing surface is shorter than the length up to the back contact position PBK at which a main pole and an auxiliary pole are connected.

The present disclosure generally relates to a magnetic recording head comprising a read head. The read head comprises a first sensor disposed at a media facing surface (MFS) comprising at least one free layer, a second sensor disposed at the MFS comprising at least one free layer, a first spin generator spaced from the first sensor and recessed from the MFS, and a second spin generator spaced from the second sensor and recessed from the MFS. The first and second spin generators each individually comprises at least one spin orbit torque (SOT) layer. The SOT layer may comprise BiSb. The first and second sensors are configured to detect a read signal using a first voltage lead and a second voltage lead. The first and second spin generators are configured to inject spin current through non-magnetic layers to the first and second sensors using a plurality of current leads.

The present disclosure generally relates to a magnetic recording system comprising a magnetic recording head that provides a low resistance cross-track current path at the trailing side of the main pole. A bias current may be driven through the path to enhance the magnetic write field to the magnetic recording media. The current is driven by an alternating current (AC) source external to the head. In some embodiments, the cross-track current going through the low resistance path enables high amounts of current to be utilized without break down of the magnetic recording head.

The present embodiments relate to a near-field transducer (NFT) for a hard disk drive write head with a parabolic waveguide blocker. The waveguide blocker can include a parabolic curved surface in a center portion of a first side of the waveguide blocker and a first side comprising a slope angle of between 10-90 degrees. The waveguide blocker can be configured to reduce electromagnetic radiation from the waveguide core and recycle a scattering field emitting from the NFT to mitigate a thermal background in a recording medium and improve a thermal gradient to increase an area density capacity (ADC) of the hard disk drive write head.

A slider for a data storage device may include a trailing pad comprising a recording head, an outer surface, and an inner surface, wherein the outer surface is at the media-adjacent level and the inner surface is at the first recessed level. The slider may further include particle-blocking structure comprising a hole in the inner surface of the trailing pad, wherein a bottom surface of the hole is at the second recessed level, and an island blocker situated within the hole, wherein a media-facing surface of the island blocker is at the media-adjacent level, wherein the recording head is situated between the island blocker and a trailing edge of the slider. Also disclosed are data storage devices comprising sliders having particle-blocking structures comprising a hole and an island blocker. Also disclosed are methods of manufacturing sliders having particle-blocking structures comprising a hole and an island blocker.

To improve a thermal gradient of a near-field transducer (NFT) and increase an areal density capacity of a HAMR head.SOLUTION: An NFT includes a main pole (MP) 302, a two-layer transducer 304 positioned adjacent to the MP, a waveguide core 306, and a parabolic waveguide blocker 308 positioned adjacent to the waveguide core, wherein the parabolic waveguide blocker includes a parabolic shape having a surface exposed to an air-bearing surface (ABS) of a write head. The parabolic waveguide blocker reduces electromagnetic radiation from the waveguide core, recycles a scattering field emitted from the NFT to mitigate a thermal background in a recording medium, improves a thermal gradient, and increases an areal density capacity (ADC) of a hard disk drive write head.SELECTED DRAWING: Figure 3A

The present invention provides a recording head that can update eigenvalues ​​while suppressing increases in memory capacity and head size. [Solution] The recording head 810 has a memory section 20 configured using a fuse element or an antifuse element. The memory section 20 has a main memory circuit M0 for storing eigenvalues ​​related to the recording head 810, and correction memory circuits M1 and M2 for storing correction values ​​for updating the eigenvalues.

This technology can help reduce the increase in discarded ink. [Solution] The recording head is provided with a first discharge port capable of discharging a first ink and a second discharge port capable of discharging a second ink; a cap that contacts the discharge port surface on which the first and second discharge ports are formed and covers the area including the first and second discharge ports; a suction means for reducing the pressure inside the cap; an discharge control means that, with the cap in contact with the discharge port surface, generates negative pressure inside the cap using the suction means to discharge ink into the cap from each discharge port; and, when the discharge of ink by the discharge control means is performed, an ejection control means that first discharges the first ink into the cap by performing a preliminary discharge from the first discharge port, and then first discharges the second ink into the cap by performing a preliminary discharge from the second discharge port.

To provide an inkjet recording method capable of recording a high quality image suppressed in generation of bleeding and irregularity when recording on a hardly- or non-absorptive recording medium by one pass.SOLUTION: There is provided an inkjet recording method of respectively discharging any of a clear ink, a reaction liquid, and a pigment ink of an aqueous liquid composition from a recording head to apply onto a recording medium so as to record an image. Application of each liquid composition to a unit region is done by one relative scanning of the recording head and the recording medium. The clear ink contains a resin, the reaction liquid contains a polyvalent metal salt as a reagent, and the pigment ink contains a pigment. The inkjet recording method includes: a clear ink-applying process of applying the clear ink onto the recording medium; a drying process of drying the clear ink applied onto the recording medium; a reaction liquid-applying process of applying the reaction liquid onto the recording medium; and a pigment ink-applying process of applying the pigment ink onto the recording medium, in this order.SELECTED DRAWING: Figure 1

This invention provides an inkjet recording method that enables the recording of images with minimal misalignment of grid lines, even when recording images using a recording head having overlapping sections where the end ejection ports of adjacent ejection port rows overlap. [Solution] An inkjet recording method comprising the step of discharging aqueous ink from end discharge ports constituting an overlapping portion, allocated to a first discharge port row and a second discharge port row, to record an image on a recording medium, wherein the viscosity of the aqueous ink is 4.0 mPa·s or more, and the water-soluble organic solvent contains a water-soluble organic solvent (A) with a vapor pressure of 0.030 Pa or more and 0.200 Pa or less at 25°C, and a water-soluble organic solvent (B) with a vapor pressure of 1.000 Pa or more at 25°C, wherein the content (mass%) of water-soluble organic solvent (A) is 0.30 times or more by mass ratio to the content (mass%) of water-soluble organic solvent (B).

A test pattern used for imaging in the information terminal's imaging section to adjust printing characteristics of a printing device that includes a recording head, wherein a density pattern for adjusting printing density, as one of the printing characteristics, is included in an imaging target region of the test pattern and the arrangement region of the density pattern within the imaging target region is symmetrical with respect to either the center of the imaging target region or a straight line passing through the center as the reference.

A recording head includes plural nozzle units. A nozzle unit position detecting unit detects positions of the nozzle units on the basis of a scanned image of a test pattern. The test pattern includes patch images corresponding to the plural nozzle units. Each of the patch image includes a first edge along a secondary scanning direction, and a second edge that crosses the first edge. On the basis of a density distribution of the test pattern, the nozzle unit position detecting unit determines an intersection point between the first edge and the second edge in each of the patch images, and determines respective positions of the plural nozzle units on the basis of positions of the determined intersection points.

The present disclosure relates to the pretreatment of a magnetic recording head assembly for a magnetic media drive. The magnetic recording head assembly comprises a slider with a media-side surface (MFS), an upper surface opposite the MFS, a trailing-edge surface adjacent to the upper surface, and an optical grating arranged on the trailing-edge surface. A vertical resonator surface-emitting laser device (VCSEL device) is mounted on the trailing-edge surface of the slider. The VCSEL device is aligned with the optical grating. A magnetic recording head, comprising a waveguide and a near-field transducer (NFT) coupled to the waveguide, is arranged on the trailing-edge surface of the slider. The VCSEL device is capable of emitting a plurality of phase-coherent lasers onto the optical grating.The optical grating is capable of directing the emitted laser beams at approximately 90 degrees to the waveguide.

The invention relates to a printing apparatus and a control method thereof, which can reduce liquid consumption, medium consumption and printing time for printing a test pattern. The printing apparatus includes a recording head, a control unit, and a detection unit. The control section performs control so as to form an intermediate image including a marker section detectable by the detection section on a medium on the basis of an input image during a cycle among a plurality of cycles, and performs control so as to form a marker section on the medium on the basis of the intermediate image during a cycle following the cycle during the cycle. A remaining image of the printed image other than the intermediate image is formed on the medium. The detection part detects the state of the identification part. The control unit is capable of executing a process based on the state of the identification unit detected by the detection unit.

Configuring the recording head to be movable in the direction of platen gap adjustment while also incorporating a mechanism to adjust the posture of the recording head would lead to increased costs and a larger size for the device. [Solution] The guide frame comprises a first guide portion that guides the recording unit along a first axis, and a second guide portion that is spaced apart from the first guide portion in the width direction, which is the direction intersecting the media transport direction at a position opposite to the recording portion, and which guides the recording unit along the first axis. The recording unit comprises a first guided portion guided by the first guide portion, and a second guided portion guided by the second guide portion, the second guided portion also serving as a rotation mechanism that rotates the recording unit with the first guide portion as a pivot point when viewed from the first axis.

To solve such a conventional problem that a movement length of a carriage became long in a main scanning direction, and improvement of through-put was difficult.SOLUTION: A recording device 10 comprises: a carriage 41 on which a recording head 20 for discharging a photocurable ink onto a medium B and a light source 30 for radiating light that cures the photocurable ink discharged during an approach path motion are mounted, and which is capable of reciprocating in a main scanning direction; and a control part 80 that controls the motion of the carriage 41. The control part 80 specifies a movement range at a step S140 and controls the movement of the carriage 41 so that the irradiation range of light by the light source 30 does not deviate from a region on the medium B to which the photocurable ink has been discharged, when reversing from the approach path motion to the return path motion.SELECTED DRAWING: Figure 3

To provide an inkjet recording apparatus capable of suppressing an increase in the width of the apparatus.SOLUTION: An inkjet recording apparatus includes: a recording head; suction means for suctioning liquid from the recording head; a drive source for driving the suction means; and transmission means for transmitting driving force of the drive source to the suction means. The transmission means includes a first foil and a second foil. Therein: the first foil includes a first foil portion and a first abutment portion; the second foil includes a second foil portion and a second abutment portion; the first foil is rated by the driving force; the second foil is rotated when the first abutment portion abuts against the second foil; and the first abutment portion overlaps at least partially the second foil portion in a direction of a rotational axis of the first foil.SELECTED DRAWING: Figure 5

This invention provides a means for accurately determining the amount of waste liquid held by a waste liquid cartridge. [Solution] The controller 50 performs a purging process to discharge ink from the recording head 34 to the cap 71, a process to determine the amount of waste liquid discharged from the recording head 34 by the purging process, and, after the purging process, at predetermined intervals, adds a partial waste liquid amount, which is a part of the total waste liquid amount, to the amount of waste liquid already discharged to the waste liquid cartridge 74 and writes it to the cartridge memory 75.

A hard disk drive includes a heat-assisted magnetic recording head and an enclosure. The enclosure is configured to contain the heat-assisted magnetic recording head and other components of the hard disk drive. The enclosure includes a base and a thermally processed top cover including a thermally oxidized interior surface. Preferably, a composition of the thermally oxidized surface of the thermally processed top cover comprises at least 5 percent oxygen. More preferably, an average oxidation depth of the thermally oxidized surface of the thermally processed top cover is at least 8 nanometers.

An inkjet recording apparatus capable of suppressing deterioration in image quality is provided. [Solution] The inkjet recording device includes a recording unit, an image reading unit, and a control unit. The control unit has an image processing unit. The image processing unit is capable of halftone processing image data input to the recording unit using multiple patterns with different degrees of concentration. The control unit is capable of executing a switching mode that switches between halftone processing patterns when a normal image formation mode is being executed. When the switching mode is being executed, the control unit acquires density information of the recording head by having the image reading unit read a check chart for density measurement recorded on a sheet by the recording unit, and determines the halftone processing pattern based on the acquired density information of the recording head.

The present invention provides a semiconductor device that allows for easy determination of the remaining number of rewrites in a counter circuit and whether or not the upper limit has been reached. [Solution] The semiconductor device is configured by combining an antifuse element A and fuse elements F1 and F2, and includes a counter circuit CM1 in which a count value is set by the combination of the conduction state and non-conduction state of the fuse elements F1 and F2 and the antifuse element A. The count value set in the counter circuit CM1 is incremented by sequentially rewriting the fuse elements F1 and F2 from the conduction state to the non-conduction state and the antifuse element A from the non-conduction state. The counter circuit CM1 has an output unit 10 that outputs a signal corresponding to the combination of the conduction state and non-conduction state of the fuse elements F1 and F2 and the antifuse element A.

Aspects of the present disclosure generally relate to a magnetic recording device comprising a magnetic recording head. The magnetic recording head comprises a main pole, the main pole comprising a contact recessed from a media facing surface (MFS) and a contact terminal coupled to the contact, a trailing shield disposed adjacent to the main pole, a spin torque oscillator (STO) device disposed between the main pole and the trailing shield, a leading shield disposed adjacent to the main pole, the contact being disposed over the leading shield, a first alternating current (AC) source coupled to the main pole and the contact terminal, and a second AC source coupled to the trailing shield and the main pole. The first AC source is configured to generate an AC field, and the AC field is configured to generate spin waves near the contact to transfer energy to the STO device.

A method comprising the steps of forming a recording head comprising a waveguide, a heat sink and a bleed resistor on a first substrate, is described. The bleed resistor is coupled to the heat sink and the substrate. The top surface of the heat sink is planarized to form a planarized heat sink. A laser diode formed on a second substrate is transfer printed onto the planarized heat sink to form an integrated laser diode.

An image forming apparatus includes a rotatable endless belt; a recording head; a platen member; a first guiding member provided movably in a direction crossing the conveying surface and for guiding a first surface, of the sheet conveyed toward the conveying surface, opposing the recording head; a second guiding member for guiding a second surface of the sheet conveyed toward the conveying surface; a first supporting portion provided movably and integrally with the first guiding member and for supporting the first guiding member in contact with the conveying surface; and a second supporting portion provided between the first guiding member and the second guiding member and for supporting the first guiding member relative to the second guiding member.

To provide a tank set capable of increasing liquid amount which can be stored in each tank while maintaining an occupied space of a plurality of tanks small.SOLUTION: A tank set 99 includes a plurality of ink tanks 100B, 100Y, 100C, and 100M which are arranged in a line. Each ink tank 100B, 100Y, 100C, and 100M is constituted of a body 140 having an ink chamber 111 which is partitioned by a right surface and a left surface facing to each other so as to store ink, an inlet 112 for injecting ink into the ink chamber 111 and an opening 158 which makes ink flow out from the ink chamber 111 toward a recording head 39. In each of two surfaces which are extended in a longitudinal direction 8 crossing a lateral direction 9 arranged in a line in each ink tank 100B, 100Y, 100C, and 100M, at least a part is constituted of films 142 and 143.SELECTED DRAWING: Figure 15

To provide a liquid dispensing device and a determination method capable of detecting a defective nozzle condition caused by increased viscosity of the liquid inside the nozzle. [Solution] The image forming apparatus includes a wiper 72 that wipes off ink IN1 adhering to the nozzle surface 33A of the recording head, an imaging unit 74 that images the nozzle surface 33A after the ink IN1 has been wiped off by the wiper 72, an acquisition processing unit that acquires the amount of ink IN1 drawn out from inside the nozzle 34 to the nozzle surface 33A by the wiper 72 based on the imaging results from the imaging unit 74, and a determination processing unit that determines that the nozzle 34 is in a defective state if the amount of ink IN1 acquired by the acquisition processing unit is less than a first threshold.

In an inkjet recording device, when a defective nozzle in a recording head is corrected, a control unit increases the amount of ink discharged to a correction pixel region adjacent to a defective pixel region corresponding to the defective nozzle in an intersection direction as compared with the amount of ink discharged to each of other pixel regions. The control unit reduces the amount of ink discharged to the correction pixel region by the recording head arranged on a downstream side in the direction of movement of a recording medium as compared with the amount of ink discharged to the correction pixel region by the recording head arranged on an upstream side in the direction of movement of the recording medium.

The present disclosure generally relates to a magnetic recording head for magnetic media, such as a magnetic media drive. The head has a main pole, trailing shield, leading shield, first side shield, and second side shield. One side shield is electrically connected to the trailing shield and electrically disconnected from the leading shield. The other side shield is electrically connected to the leading shield and electrically disconnected from the trailing shield. The side shields are electrically connected through a hot seed layer and / or a nonmagnetic electrically conductive layer that is electrically disconnected from the main pole. Such an arrangement results in a current path from the trailing shield, through the side shields, around the main pole, and to the leading shield, which results in reduced resistance.

A magnetic recording head includes a piezoelectric actuator for controlling head-media spacing. A method for making the magnetic recording head including a piezoelectric actuator includes the steps of: providing a source wafer on which to fabricate the piezoelectric actuator; providing a target wafer; fabricating the piezoelectric actuator on the source wafer; releasing the piezoelectric actuator from the source wafer; and placing the piezoelectric actuator on the target wafer.

Described is a recording head that includes a notched write pole to enhance perpendicularity of the write pole field. The write pole notch is formed at the media-facing surface and the leading edge of the write pole. The write pole notch is filled with a non-magnetic metal. The recording head further includes a near field transducer located in front of the leading edge of the write pole and having a portion extending to the media-facing surface that is spaced apart from the notch, thereby forming a gap between the near field transducer and the notch.