155 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 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.

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 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.

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.

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.

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.

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 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.

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.

To provide a recording head for an image forming apparatus that enables appropriate determination of the pressure exerted on the nozzle of the recording head by the recording medium when a media attack occurs. [Solution] The recording head 24 of the image forming apparatus 1 according to the present invention comprises a head body portion 241, a nozzle row 24N formed on the lower surface of the head body portion 241 and having a plurality of nozzles 243 for ejecting ink arranged in a predetermined direction, and a plurality of pressure sensors 25 arranged on the lower surface of the head body portion 241 along the nozzle row 24N.

An inkjet recording device (10) comprises a determination unit (71) and an acquisition unit (72). The determination unit (71) determines, from among a plurality of ink storage parts (3) that each store ink of the same color, an ink storage part (3) as a supply source for supplying the ink to a corresponding recording head (51). The acquisition unit (72) acquires identification information of at least the ink storage part (3) as the supply source among the plurality of ink storage parts (3). The determination unit (71) determines the ink storage part (3) as the supply source on the basis of first identification information, which is identification information acquired by the acquisition unit (72), and second identification information, which is identification information acquired by the acquisition unit (72) before the first identification information is acquired and before the power is turned off.

To provide an inkjet recording device capable of suppressing repelling and bleeding of ink when forming an image by using aqueous ink.SOLUTION: The inkjet recording apparatus includes a conveying unit, a recording unit, a coating unit, and a control unit. The conveying unit conveys a recording medium. The recording section includes a recording head configured to eject an aqueous ink onto the recording medium conveyed by the conveying section. The application unit is disposed on the upstream side of the recording unit in the conveyance direction of the recording medium, and applies the pretreatment liquid to the recording medium. The control unit controls application of the pretreatment liquid to the recording medium by the application unit. The pretreatment liquid contains at least a polyester resin, a surfactant, a water-soluble organic solvent, and water. The control part changes the application amount of the pretreatment liquid by the application part according to the surface tension of the recording medium.SELECTED DRAWING: Figure 1

This recording device records an image on label paper in which a plurality of label pieces are provided side by side in a conveyance direction, the recording device comprising: a conveyance unit that conveys the label paper in the conveyance direction; a recording head that is configured to be capable of scanning in a scanning direction intersecting the conveyance direction and records the image on the label paper; an image data generation unit 501 that generates image data 505 to be recorded on the label pieces; a margin data generation unit 503 that generates margin data 509 corresponding to a margin portion between the label pieces adjacent to each other in the conveyance direction; and a head control unit that controls the operation of the recording head on the basis of the image data 505 and the margin data 509.

A data storage device comprises recording heads and magnetic recording media. An initialization process is performed following a logical block address (LBA) remapping operation that remaps LBAs to physical locations on the media. The initialization process comprises initializing a write target LBA in response to a write command by writing data to a physical location on the media that is mapped to the write target LBA, receiving a read command to read data from a read target LBA, reading and returning data from the physical location on the magnetic recording media that is mapped to the read target LBA if the read target LBA has been initialized, and generating and returning a background data pattern if the read target LBA has not been initialized.

An inkjet recording apparatus includes a recording head, a blade, and a cleaning liquid supply member. The head unit is provided with a nozzle surface. The cleaning liquid supply member includes a supply port, a sheet member, and a holder. When the cleaning liquid supply member is moved to a supply position and then the recording head is lowered, a tip end of the sheet member comes into contact with the nozzle surface, and then the cleaning liquid supply member is turned from an inclined posture to a supply posture while the tip end of the sheet member is moved along the nozzle surface forward in the moving direction, and the sheet member is disposed between the supply port and the nozzle surface.

A degassing device includes an ink tank, a recording head, a pressure reducing device, a circulation flow path, and a circulation device. The ink tank stores ink. The recording head ejects the ink supplied from the ink tank. The pressure reducing device reduces pressure in the ink tank. The circulation flow path communicates different positions of the ink tank. Thea circulation device circulates the ink through the circulation flow path. The ink contains a white pigment.

Provided is an aqueous ink which is capable of suppressing deterioration of filterability even when microorganisms are present in the aqueous ink, and which has good ejection stability by a recording head even when applied to an inkjet aqueous ink.　Specifically provided is an aqueous ink which contains a coloring material, a quorum sensing (QS) inhibitor, and water. The QS inhibitor is at least one compound that is selected from the group consisting of aromatic amide compounds, furanone compounds, phenol compounds, histidine compounds, pyrimidine compounds, sugar ester compounds, lactam compounds, thiohydantoin compounds, and thiazolidinedione compounds. The QS inhibitor has a common logarithm Log S of the solubility in water at 25°C of -2.2 or more. The content of water in the ink is 50.00 mass% or more based on the total mass of the aqueous ink.

Maintains good write characteristics in a heat-assisted magnetic recording and playback device. [Solution] According to the embodiment, the adjustment method for a heat-assisted magnetic recording and playback device is an adjustment method for a heat-assisted magnetic recording and playback device equipped with a heat-assisted magnetic recording head and a heat-assisted magnetic recording medium, wherein the bit density in the starting area of ​​the recording band and in each area storing information other than user data is changed to be lower than the bit density of the areas other than the starting area in order to improve the write characteristics.

This printer 10 comprises: a placement table 20 on which a medium 5 is placed; a recording head 40 provided above the placement table 20; a first moving device 25Z that moves the placement table 20 in a vertical direction Z; a non-contact sensor 70 that detects, without physical contact, the position in the vertical direction Z of a medium 5 placed on the placement table 20; a contact sensor 80 that is provided with a contact part 81, which comes into contact with the medium 5, and that detects the position in the vertical direction Z of the medium 5 by detecting the contact of the medium 5 with the contact part 81; and a control device 100. The control device 100 raises the placement table 20 until the medium 5 reaches a lower control position Pl set below the contact part 81 on the basis of the detection of the non-contact sensor 70, and then raises the placement table 20 until the medium 5 comes into contact with the contact part 81 on the basis of the detection of the contact sensor 80.

A printing device includes a recording head, a main scanning unit, a conveyance unit, and a control unit. The conveyance unit includes an upstream drive roller including a first gear, a downstream drive roller including a second gear, and a rotary element meshing with the first gear and the second gear. The control unit performs control for ejecting droplets to a cantilevered print area from the recording head moving along a main scanning direction in a state where a phase of the rotary element is a first phase and thus forming a first test pattern, and ejecting droplets to the cantilevered print area from the recording head moving along the main scanning direction in a state where the phase of the rotary element is one or more second phases shifted from the first phase by k(n / m) cycles and thus forming a second test pattern.

A data storage device comprises a disk and a recording head. A thermal fly-height control (TFC) heater thermally adjusts a spacing of the recording head from a surface of the disk. A thermal proximity sensor detects a spacing of the recording head from the disk surface and generates a thermal proximity sensor signal indicative of the detected spacing. A height of smear accumulated on the recording head is determined by dithering the TFC heater about a DC power level, measuring a skewness in the thermal proximity sensor signal while the TFC heater is being dithered, and determining the smear height from the measured skewness.

A recording apparatus includes a liquid container configured to house a liquid to be supplied to a recording head outside a recording region of the recording apparatus, the recording head configured to perform recording by discharging the liquid to a recording medium in the recording region; a maintenance unit arranged outside the recording region, including a suction unit configured to suction the liquid from the recording head, and configured to perform maintenance of the recording head; and a liquid reservoir below the liquid container and the maintenance unit.

This suppresses unnecessary ink consumption during the head recovery operation. [Solution] A recording head has multiple rows of ejection ports that eject ink supplied from multiple ink tanks. The system detects which ink tank has been replaced from among the multiple ink tanks. As a recovery operation for the recording head after replacement, it performs a suction operation to draw ink from the rows of ejection ports and an ejection operation to eject ink from the recording head. The content of the first ejection operation performed as a recovery operation for the first ink tank that has been replaced is made different from the content of the second ejection operation performed as a recovery operation for the first ink tank when the first ink tank has not been replaced.

The present disclosure is generally related to a magnetic recording device comprising a magnetic recording head. The magnetic recording head comprises a main pole, a hot seed layer, and a spintronic device disposed between the main pole and the hot seed layer. The spintronic device comprises two field generation layers (FGLs), two spin polarization layers (SPLs), and two spin kill layers. The second SPL of the spintronic device drives the second FGL. The spintronic device further comprises one or more optional thin negative beta material layers, such as layers comprising FeCr, disposed in contact with at least one of the spin kill layers. When electric current is applied, the spin kill layers and optional negative beta material layers eliminate or reduce any spin torque between the FGLs and the SPLs.

To provide a recording device capable of improving efficiency of a recording operation.SOLUTION: The printing apparatus includes a conveyance unit that conveys label paper in a conveyance direction, a recording head including a recording element array including a plurality of recording elements arranged along the conveyance direction, a head control unit that controls an operation of the recording head based on recording data, a data storage unit that stores recording data for one pass of the recording head therein, a data writing unit that writes the recording data to the data storage unit, and a determination unit that determines a magnitude relationship between a data length, which is a length of the recording data in the conveyance direction, and a column length, which is a length of the recording element array in the conveyance direction. The data writing part is configured to offset the data writing position of the recording data of the data storage part based on the length of the margin part in the conveyance direction, and newly writes the recording data from the offset position when the determination part determines that the data length of the recording data of the offset data storage part is less than the column length.SELECTED DRAWING: Figure 5

To provide an image forming apparatus with high accuracy for faulty connection testing. [Solution] The image forming apparatus comprises a recording head and a control board for controlling the recording head. The control board includes a control unit that generates print data and inspection data for determining connection problems between the recording head and the control board, and a transmission unit that transmits the print data and inspection data as differential signals to the recording head. The recording head includes a receiving unit that receives the print data and inspection data, and a determination unit that determines the connection problems from the received inspection data. The transmission unit and the receiving unit are equipped with switching means that can swap clock signals and data signals for transferring print data and inspection data.

An image forming apparatus is provided. The image forming apparatus has a recording head and a wiper. The recording head has a nozzle area in which a plurality of ink ejection ports are open toward a lower side. The wiper wipes the ink ejection ports by contacting the nozzle area and moving in a prescribed wiping direction. On a side surface of the recording head along the wiping direction, a recording head mounting portion along the wiping direction is provided in a manner projecting outward at a position higher than the nozzle area. The recording head mounting portion has an outer side portion and an inner side portion, wherein a surface of the outer side portion has a higher water repellency than the side surface, and the inner side portion is provided inside the outer side portion and has a surface with a lower water repellency than the outer side portion. Accordingly, it is possible to reduce the falling of ink that is pushed up to the side surface of the recording head when wiping is performed.