Abstract: Enclosure parts for portable information handling systems may be made by heat pressing material layers together. The material layers may include outer fiber-reinforced thermoplastic layers and a core thermoplastic layer comprising a plurality of thermoplastic film layers. The core thermoplastic layer may be die cut to create voids that reduce weight of the enclosure part. A finishing layer may be added, along with attachment features.

Abstract: A method of making an aquaplane is provided. The method includes flattening a fabric layer and a bottom layer with a waterproof characteristic, where the pull-string layer has a first pull-string layer, a second pull-string layer and multiple pull lines, one end of the pull line holds the first pull-string layer, and the other end of the pull line holds the second pull-string layer; using a roller laminates the fabric layer, the pull-string layer and the bottom layer, where a portion surface of the fabric layer and the bottom layer are melted, and respectively mixed with the surface gluing of the first pull-string layer and the second pull-string layer to produce a fixed microstructure; and cutting a shape of the aquaplane from the lamination of the fabric layer, the pull-string layer, and the bottom layer.

Abstract: A substrate structure and methods for method for attaching a flexible substrate and for peeling off a flexible substrate are disclosed. The substrate structure includes a carrier substrate and a flexible substrate disposed on the carrier substrate, the substrate structure further including a bonding layer interposed between the carrier substrate and the flexible substrate, or more than one bonding layers parallel interposed between the carrier substrate and the flexible substrate, wherein the bonding layer includes an electroviscosity layer, viscous strength of which changes under effect of electric field, the electroviscosity layer is disposed on a contact surface between the bonding layer and the flexible substrate.

Abstract: A steel for electron-beam welding according to the present invention includes at least C: 0.02% to 0.10%, Si: 0.03% to 0.30%, Mn: 1.5% to 2.5%, Ti: 0.005% to 0.015%, N: 0.0020% to 0.0060%, and O: 0.0010% to 0.0035%, further includes S: limited to 0.010% or less, P: limited to 0.015% or less, and Al: limited to 0.004% or less, with a balance including iron and inevitable impurities. An index value CeEBB obtained by substituting composition of the steel into following Formula 1 falls in the range of 0.42 to 0.65%, the number of oxide having an equivalent circle diameter of 1.0 ?m or more is 20 pieces/mm2 or less at a thickness center portion in cross section along the thickness direction of the steel, and the number of oxide containing Ti of 10% or more and having an equivalent circle diameter of not less than 0.05 ?m or more and less than 0.5 ?m falls in the range of 1×103 to 1×105 pieces/mm2 at the thickness center portion.

Abstract: A modular element for a thermally insulated construction such as a freezer construction or a heated construction, wherein the modular element is a thermally insulated structural element comprising an inner cladding, an outer cladding and an insulating layer located between the inner cladding and the outer cladding. The modular element is configured with the insulating layer placed adjacent to the inner cladding prior to assembly of said modular element in a modular construction. Further, the inner cladding of the modular element is adapted to be joined to an inner cladding of the modular construction along at least a substantial part of at least one edge with the insulating layer of the modular element maintained intact.

Abstract: There is provided an interlayer film for laminated glass with which the production efficiency of laminated glass can be heightened. The interlayer film for laminated glass according to the present invention is an interlayer film for laminated glass having a one-layer structure or a two or more-layer structure and includes a first layer containing a thermoplastic resin, the softening point of the first layer is 60° C. or more, the interlayer film has an MD direction and a TD direction, and with regard to thermal shrinkage ratios obtained when the first inside portion, the second inside portion and the central portion are heated for 20 minutes at 140° C. respectively, all of the thermal shrinkage ratio MD1MAX, the thermal shrinkage ratio MD2MAX and the thermal shrinkage ratio MD3MAX are 45% or less.

Abstract: A laminating apparatus includes: a first jig including at least one curved portion; a second jig opposing the first jig; a pad portion on the second jig; a tube between the first jig and the pad portion, the tube contractable and expandable by a fluid to be injected thereinto; a pressure regulator to regulate a pressure of a fluid injected into the tube; and a fluid moving portion connecting the tube and the pressure regulator. A laminating method is also provided.

Abstract: Disclosed herein are a real wood film and a method of manufacturing an injection-molded real wood product by using the real wood film. The real wood film includes: a sliced veneer; a non-woven fabric adhered to the bottom surface of the sliced veneer by means of a non-aqueous adhesive, and configured to protect the sliced veneer from moisture; a formation improvement layer adhered to the bottom surface of the non-woven fabric, and configured to prevent the sliced veneer from being wrinkled due to heat applied to the sliced veneer and prevent a crack from occurring; and a thermoplastic adhesive layer adhered to the bottom surface of the formation improvement layer, and configured to enable adhesion to injected resin.

Abstract: A lining element includes at least three layers and is configured to be mounted to a structure exposed to wear. The lining element has a wear-impeding polymer layer, an energy-absorbing polymer layer and a reinforcing polymer layer. The reinforcing layer is located adjacent the structure exposed to wear, whereas the energy-absorbing layer is located between the reinforcing layer and the wear-impeding layer. The wear-impeding layer is located on top of the energy-absorbing layer.

Abstract: There is provided herein a flame retardant and curing agent compound for curing thermosetting resins, e.g., epoxy resins, a composition comprising a thermosetting resin, e.g., an epoxy resin and the curing agent, an article comprising the curing agent, and a method of making the curing agent.

Abstract: A method of producing a stretch film includes at least: extruding a first random copolymer polypropylene (RCPP) resin from a first extruder at a first temperature to at least one primary channel inside of a feedblock; extruding a second RCPP resin from a second extruder at a second temperature to at least one secondary channel, wherein said second temperature is greater than said first temperature; combining the first RCPP resin and the second RCPP resin to create a layered stream using a combining adapter disposed in communication with the feedblock; passing said layered stream from the combining adapter to a die; and passing the layered stream through said die to a casting unit. A multi-layered stretch film includes at least one nanolayer section, the nanolayer section comprising alternating substantially adjacent layers of a first random copolymer polypropylene (RCPP) resin and a second RCPP resin.

Abstract: A multi-layered laminated paper structure that has at least two layers of an extensible kraft paper is provided. The extensible kraft paper has a basis weight of 25-400 pounds per 3000 sq. ft. The multi-layered laminated paper structure also has one or more layers of a non-extensible kraft paper and a layer of adhesive which bonds each of the at least two layers of extensible or non-extensible kraft paper together to form a flexible solid multi-layered laminated paper structure.

Abstract: A method of forming deformations in a nonwoven web includes the steps of: a) providing a precursor nonwoven web; b) providing a pair of forming members which include: a first forming member having a surface comprising a plurality of discrete, spaced apart male forming elements; and a second forming member having a surface comprising a plurality of recesses in the second forming member, wherein the recesses are aligned and configured to receive the male forming elements therein, wherein the recesses have a plan view periphery that is larger than, and may completely surround, the plan view periphery of the male elements; and c) mechanically deforming the precursor nonwoven web with the forming members by placing the precursor nonwoven web between the forming members. The method forms a nonwoven web having a generally planar first region and a plurality of discrete deformations.

Abstract: The present disclosure provides an attachment device, an attachment system and a method for attaching a protection film using the attachment system. The attachment device includes an adsorption stage and a handle fixedly connected to the adsorption stage, wherein the adsorption stage is provided with an adsorption surface and a suction hole, and the suction hole is communicated with a plurality of adsorption mouths in the adsorption surface and is configured to connect to a suction device.

Abstract: A method for laminating and aligning an irregular-shape material is disclosed. Since the existing laminating material has an irregular shape, there is a problem with disabling alignment in a lamination process. Thus, the irregular shape of the laminating material is used to form a straight line correlated with a tangent line to the shape, and the straight line is used as the shape-aligned feature of the laminating material. Besides, the definition of an alignment relationship between the laminating material and a laminated object is established to adjust a lamination tolerance and prevent the laminating material from overhanging over the laminated object, thereby satisfying consumers' aesthetic needs for the appearance of products.

Abstract: A ribbon liquefier comprising an outer liquefier portion configured to receive thermal energy from a heat transfer component, and a channel at least partially defined by the outer liquefier portion, where the channel has dimensions that are configured to receive the ribbon filament, and where the ribbon liquefier is configured to melt the ribbon filament received in the channel to at least an extrudable state with the received thermal energy to provide a melt flow. The dimensions of the channel are further configured to conform the melt flow from an axially-asymmetric flow to a substantially axially-symmetric flow in an extrusion tip connected to the ribbon liquefier.

Abstract: An apparatus for use in 3D fabrication includes a heat sink, a melt tube extending through the heat sink, the melt tube having a first end and an opposite second end and adapted for melting filament or other material as the material is conveyed from the first end to the second end, a pen tip having an opening therein for ejecting melted material, the pen tip at the second end of the melt tube, and a pen tip holder for securely holding the pen tip during printing, the pen tip holder having a heater element associated therewith.

Abstract: A temperature control system for the extruder of a 3-D printer includes a blower and a baffling system to cool different components of the extruder using the same blower by directing air flow of the blower into two passages arranged at an outlet of the blower.

Abstract: An additive manufacturing system is configured to manufacture a component. The additive manufacturing system includes a laser device, a build platform, a first scanning device, and an air knife. The laser device is configured to generate a laser beam. The component is disposed on the build platform. The air knife is configured to channel an inert gas across the build platform. The first scanning device is configured to selectively direct the laser beam across the build platform. The laser beam is configured to generate successive layers of a melted powdered build material on the component and the build platform. The build platform is configured to rotate the component relative to the air knife.

Abstract: A 3D printing device and a resume printing method thereof are provided. The method includes: executing printing commands sequentially to control a print head for printing; obtaining a first printing command executed when a printing interruption occurs, and resuming printing according to the first printing command.

Abstract: The cost required to shape a three-dimensional laminated and shaped object is suppressed. A three-dimensional laminating and shaping apparatus for shaping a three-dimensional laminated and shaped object by irradiating a powder with a high-energy beam includes a laminating and shaping data acquirer that acquires laminating and shaping data to be used for laminating and shaping of the three-dimensional laminated and shaped object, an attribute information acquirer that acquires attribute information of the powder to be used for laminating and shaping of the three-dimensional laminated and shaped object, a model generator that generates, based on the laminating and shaping data and the attribute information, a circuit pattern model for removing electrons from the powder electrically charged by irradiation with the high-energy beam, and a circuit pattern shaping unit that shapes a circuit pattern based on the generated circuit pattern model.

Abstract: In the additive manufacturing process, a monitored or controlled mixture of materials is deposited to form an additive manufactured product by delivering the mixture of materials through a material flow path while using an excitation source to introduce electromagnetic energy into the material flow path using a circuit element having inductive or capacitive reactance disposed adjacent the material ejecting orifice. The excitation source produces an electromagnetic field condition within the material flow path that is responsive to at least one of the permeability and permittivity properties of a space within the material flow path. A sensing means coupled electrically or magnetically to the excitation means is responsive to the electromagnetic field condition and provides at least one control parameter based on the electromagnetic field condition that may be used to control the composition of the mixture of materials by adjusting proportions of constituent materials.

Abstract: A method of controlling an additive fabrication process includes providing a primary substrate and a test substrate. Polymer test material is extruded onto the test substrate utilizing an extrusion head. The extrusion head is moved relative to the test substrate, and a force required to move the extrusion head relative to the test substrate is measured to thereby generate test data. A part is fabricated by extruding polymer material onto the primary substrate utilizing the extrusion head. The test data is utilized to control at least one process parameter associated with extruding polymer material onto the primary substrate.

Abstract: An extruder is fitted with a connector for coupling and decoupling with a filament feed source, such as a filament tube. When connected, the extruder and filament tube are aligned to define a feed path for a filament. A tool rack includes a plurality of filament tubes secured within respective openings. The tool rack may facilitate coupling and decoupling operations between the extruder and filament sources. For example, the tool rack may define an insertion path that engages a filament tube during insertion, and that secures the filament tube against an excursion from the insertion path. The extruder may disengage the coupling by initiating a motion along the insertion path and then moving off of the insertion path to decouple the filament tube and the extruder. In this manner, filaments may be swapped through engaging and disengaging the extruder with different filament tubes on the tool rack.

Abstract: A can decorator comprising a spindle disc, a blanket drum, a transfer wheel, a pin chain drive, and a controller. The spindle disc is adapted for (i) receiving beverage cans from an infeed and (ii) carrying and rotating each can body on a corresponding spindle. The blanket drum is adapted for (i) applying ink to printing cylinders and (ii) rotating the print cylinders in registration with beverage cans on the spindle disc to decorate the cans. The transfer wheel is adapted for receiving beverage cans from the spindle disc after decoration by the blanket drum. The pin chain drive is adapted for receiving cans from the transfer wheel and transporting the cans on a chain through an oven. The controller adapted for receiving encoder information and matching or adjusting speeds of a spindle disc motor, a blanket drum motor, a transfer wheel motor, and a pin chain drive motor.

Abstract: An inkjet printing apparatus includes a printhead configured to form an image by discharging ink to a transfer member, a transfer unit configured to transfer the image from the transfer member to a print medium, and an application unit configured to apply a first liquid to the transfer member prior to formation of the image by the printhead. The inkjet printing apparatus also includes a first drying unit configured to dry the first liquid applied to the transfer member by the application unit by blowing air using a first air blower before the ink is discharged by the printhead to the transfer member.

Abstract: A printing apparatus includes a control unit that, when continuously printing on a plurality of cut sheets of a same size, controls a print unit to cause a transfer member to continue movement, controls the print unit and a supply unit so as to stop supply of a cut sheet by the supply unit based on information concerning a time taken to process image data representing an image of a print target by an image processing unit, and controls the print unit not to form an ink image in a partial area on the transfer member that passes through a transfer area at a timing when the supply of the cut sheet to the transfer area is stopped, and to form the ink image in a remaining area.

Abstract: An ink jet recording apparatus of the present invention includes an image forming unit which forms an ink image by discharging and applying ink containing at least a resin and a liquid component as an ink droplet onto a transfer body, a liquid removing unit which removes the liquid component in the ink image, a transfer unit which transfers removes the image, from which the liquid component is removed, onto a recording medium, a fixing unit which performs heating and pressing fixing on the image formed on the recording medium by pressing a fixing substrate, a liquid adhesion determination unit which determines whether a liquid adheres to a surface of the fixing substrate, and a liquid removing condition changing unit which changes a liquid removing condition of the liquid removing unit based on the determination result of the liquid adhesion determination unit.

Abstract: A method calibrates image sensors and adjusts print heads in an inkjet printing machine via a computer. The method includes printing a test print chart, recording the printed test print chart via an image sensor to create a digital image, determining a coordinate transformation between the coordinates on the test print chart and the coordinates of the image sensor and the print heads, implementing a computer-assisted evaluation process of the digital image to determine the coordinates on the test print chart, deriving correction values for print head adjustment and camera calibration from results of the coordinate transformation and/or the comparison thereof with the determined measured values, and implementing the print head adjustment and the camera calibration by the computer. The test print chart has filled circular discs. The filled circular discs have a minimum diameter that is selected for them to function even if defective printing nozzles occur.

Abstract: The purpose of the present invention is to provide an ink jet recording apparatus that improves printing quality when printing with a plurality of nozzles. The ink jet recording apparatus performs printing control of a plurality of nozzles using an encoder pulse output from an encoder attached to a conveying line, and is characterized by comprising: an input unit with which a printing character width is separately set for each of the plurality of nozzles; and a control unit that controls printing using a character width corresponding to input information from the input unit.

Abstract: According to one embodiment, a waveform generating device includes a head driver configured to apply a driving signal to an actuator to discharge ink from a pressure chamber connected to a nozzle, the driving signal including a first portion for reducing an ink pressure in the pressure chamber and a second portion for increasing the ink pressure in the pressure chamber. The second portion is increased in potential by a first potential increase when ink pressure in the pressure chamber is at a maxima and the second portion is further increased in potential by a second potential increase when the ink pressure of the pressure chamber is at a negative value after the first potential increase.

Abstract: A printing apparatus includes first and second actuators for exerting force to liquid, the number of the second actuators being smaller than the number of the first actuators; a switching circuit; first, second and third power circuits for applying voltages to the first and second actuators; and a controller for controlling driving of the first and second actuators. The controller is configured to control the switching circuit to electrically connect the first power circuit and some of the first actuators, electrically connect the second power circuit to the other of the first actuators and electrically connect the third power circuit to the second actuators, based on the number of the first actuators and the number of the second actuators.

Abstract: A print head, including a plurality of piezoelectric actuators, a pseudo-actuator, a drive rail, electronic selection circuitry connected to each of the plurality of piezoelectric actuators, the pseudo-actuator, and the drive rail, the electronic selection circuitry configured to select at least one of the piezoelectric actuators or the pseudo-actuator to connect to the drive rail, and a controller coupled to the drive rail, the controller configured to generate a waveform to drive the drive rail and measure a signal on the drive rail connected to a piezoelectric actuator, a pseudo-actuator, or without any connected piezoelectric actuators or the pseudo-actuator, and using the resulting measurements to calculate an impedance of a piezoelectric actuator.

Abstract: A liquid ejecting head includes an actuator communicating with a nozzle, configured to eject liquid from the nozzle, a drive circuit on a circuit board configured to drive the actuator, a flow path of liquid circulating, a first temperature sensor configured to measure a temperature on a surface on the circuit board proximate to the drive circuit, and a second temperature sensor configured to measure a temperature of a liquid on the flow path of liquid circulating.

Abstract: A printer includes a printhead assembly, a service station assembly, and a controller. The printhead assembly includes nozzles to eject fluid drops. The nozzles are divided into a least two groups with each group assigned a burst drop count, a post-burst delay, and a burst order. The service station assembly is to receive fluid ejected from the nozzles during spits. The controller is to control a spit of the printhead assembly by ejecting fluid from the nozzles of each group based on the burst drop count, the post-burst delay, and the burst order of each group until a target drop count for the spit is reached.

Abstract: Systems and methods are provided for printhead waveform adjustment. One embodiment is a system that includes a controller that correlates a series of printhead waveforms input to a printhead with a series of optical density values output by the printhead. The controller determines a single target optical density for the printheads based on an average optical density of the printheads. Also, for each of the printheads, the controller determines a functional relationship between the parameter of the printhead waveforms input to the printhead and the optical density values output by the printhead, and determines a target printhead waveform parameter for the printhead based on the single target optical density input to an inverse of the functional relationship. The controller updates printhead settings to include information of the target printhead waveform parameter determined for each of the printheads for applying to the printheads to output ink at consistent optical density.

Abstract: A fluid ejection device includes a fluid slot, a fluid ejection chamber communicated with the fluid slot, a drop ejecting element within the fluid ejection chamber, a fluid circulation channel communicated at one end with the fluid slot and communicated at another end with the fluid ejection chamber, a fluid circulating element within the fluid circulation channel, and a channel wall separating the fluid ejection chamber and the fluid circulation channel. The fluid circulation channel includes a channel loop, and a width of the channel wall is based on a width of the channel loop and a width of the fluid ejection chamber.

Abstract: A print element substrate, comprises: a heater layer; a wiring layer that is connected to the heater layer and is for causing the heater layer to generate heat; an insulating layer arranged on the wiring layer; an anti-cavitation layer arranged on the insulating layer that is for protecting the insulating layer; and a switch that has a control terminal that is pulled-down to a ground, and causes the anti-cavitation layer and the ground to have an electrical connection when the control terminal is in a high-level state.

Abstract: There are provided a liquid jet head and a liquid jet device capable of achieving reduction in size. There are included a first head chip and a second head chip stacked on one another in the Y direction, a first flow channel member disposed on the ?Y direction side of the first head chip, and having an inflow port communicated with an ink tank, and a first ink flow channel adapted to communicate the inflow port and the first head chip with each other, a second flow channel member disposed on the +Y direction of the second head chip, and having a second ink flow channel communicated with the second head chip, and a communication flow channel located between the first flow channel member and the second flow channel member, and adapted to communicate the first ink flow channel and the second ink flow channel with each other.

Abstract: A piezoelectric device including a pressure chamber, a piezoelectric element, and a vibration plate, in which the piezoelectric element is provided with a first electrode, a second electrode, and a piezoelectric layer, the vibration plate has a first portion overlapping the piezoelectric element and a second portion having a thickness smaller than that of the first portion and overlapping an inner peripheral surface of a side wall of the pressure chamber, a side surface of the piezoelectric element which intersects the vibration plate has a first surface inclined at a first angle, the vibration plate has a second surface, between the first portion and the second portion, inclined at a second angle smaller than the first angle, and an end portion of the second surface on the side wall side of the pressure chamber overlaps the side wall of the pressure chamber.

Abstract: An actuator component for a droplet deposition head that includes: a plurality of fluid chambers arranged side-by-side in an array, with certain of the fluid chambers being firing chambers, each of which is provided with at least one piezoelectric actuating element for causing droplet ejection from a nozzle for that firing chamber; and a plurality of non-actuable walls, each of which is formed of piezoelectric material and bounds at least one of the firing chambers.

Abstract: There are provided a head chip, a liquid jet head, and a liquid jet recording device capable of enhancing the reliability. The head chip according to an embodiment of the disclosure includes a first plate having a plurality of pressure chambers adapted to apply pressure to a liquid, a second plate having a plurality of nozzle holes adapted to jet the liquid in response to application of the pressure, and a third plate disposed between the first and second plates, and provided with a plurality of through holes individually communicated with the plurality of pressure chambers and the plurality of nozzle holes, respectively. In the through hole, a second opening region opposed to the second plate is larger than a first opening region opposed to the first plate.

Abstract: According to one embodiment in an inkjet head, the common electrodes for all the actuators, without overlapping with the first wiring pattern formed by individual electrodes, are connected to a second wiring pattern that passes between the outer peripheral portion of piezoelectric bodies, and a third wiring pattern that extends in a direction different from a direction of the second wiring pattern. The first wiring pattern and the third wiring pattern are electrically insulated at intersections thereof.

Abstract: There is provided a nozzle substrate including a nozzle hole penetrating in a thickness direction. The nozzle substrate includes a main substrate including a first surface and a second surface, an oxidation film formed on the second surface of the main substrate, and a water repellent film formed on a surface at an opposite side to the main substrate side of the oxidation film. The nozzle hole includes a first through hole penetrating the main substrate in a thickness direction, a second through hole penetrating the oxidation film and being connected to the first through hole, and a third through hole penetrating the water repellent film and being connected to the second through hole. An inner circumference surface of the second through hole and an inner circumference surface of the third through hole are approximately flush.

Abstract: In an example, a fluid ejection apparatus includes a printed circuit board including a conductor layer, a cover layer forming a surface of the printed circuit board, and a cavity. A printhead die may be embedded in a molding material in the cavity.

Abstract: In some examples, a print cartridge comprises a printhead die that includes a die sliver molded into a molding. The die sliver includes a front surface exposed outside the molding to dispense fluid, and a back surface exposed outside the molding and flush with the molding to receive fluid. Edges of the die sliver contact the molding to form a joint between the die sliver and the molding.

Abstract: An actuator device includes an actuator substrate having actuators, individual conductors electrically connected with the actuators respectively, and dummy conductors; and a bonding member bonded to a surface of the actuator substrate provided with the individual conductors and the dummy conductors. The individual conductors are aligned in an alignment direction to form a first row and a second row arranged in an orthogonal direction orthogonal to the alignment direction. In a first end portion of the actuator substrate on one side in the alignment direction, first individual conductors are aligned in the alignment direction without intervening second individual conductors therebetween. In a second end portion of the actuator substrate on the other side in the alignment direction, the second individual conductors are aligned in the alignment direction without intervening the first individual conductors therebetween.

Abstract: A method for manufacturing a liquid ejection head including providing a negative first photosensitive resin layer on the substrate, forming a pattern of the flow path by selectively exposing the first photosensitive resin layer, providing a negative second photosensitive resin layer on the first photosensitive resin layer, providing a negative third photosensitive resin layer on the second photosensitive resin layer, forming a pattern of the ejection port by selectively exposing the second and third photosensitive resin layers, developing the first, second, and third photosensitive resin layers, irradiating an activation energy line on at least the third photosensitive resin layer after the developing, and heat curing the first, second, and third photosensitive resin layers after the irradiating of the activation energy line.

Abstract: There is provided a liquid ejecting apparatus including: a liquid ejecting head that has a nozzle-formed surface; guide shafts that guide the liquid ejecting head in a direction in which the liquid ejecting head is lifted and lowered; a cap that is lifted and lowered in the direction and covers the nozzle-formed surface; and a restrainer that restrains the liquid ejecting head against the cap at a position shifted from the center of the cap when viewed from the direction.

Abstract: An inkjet head maintenance mechanism includes: an inkjet head including a nozzle plate with ejection ports arranged in the nozzle plate and configured to eject droplets of ink, and a protection plate stacked on the nozzle plate and having an opening formed at a position corresponding to the ejection ports and exposing the ejection ports to an outside; a cap configured to come into contact with the protection plate and surround the opening of the protection plate; and a controller configured to detect an on-off state of a power supply of an inkjet printer to which the inkjet head is attached and adjust a contact pressure of the cap onto the protection plate depending on the detected on-off state of the power supply.