Abstract: A reservoir for an inkjet printer, comprising: a 1st compartment (10), comprising at least one 1st part (101) called the upper part, and a 2nd part (102) called the lower part delimited by a convergent shaped wall (14), and a 2nd compartment (20) delimited by a lateral wall, the 2nd part of the 1st compartment (10) being placed in the 2nd compartment (20), the wall (22) of which surrounds it radially, when these 2 compartments are assembled to each other, 1st drawing off means (26) to connect the inside with the outside of the 1st compartment (10), and 2nd drawing off means (28) to connect the inside with the outside of the 2nd compartment (20); a cover (40) to close the 1st compartment (10).

Abstract: A valve unit includes a flow path member having an opening surface that has a flow path opening of a liquid flow path, a valve having a sealing surface configured to seal the flow path opening, and a sealing member disposed on one of a peripheral portion of the flow path opening in the opening surface and a portion of the sealing surface facing the peripheral portion. The sealing surface is configured to be moved forward and backward relative to the opening surface to open and close the flow path opening. The sealing member is configured to be in contact with the peripheral portion of the flow path opening and the sealing surface when the valve is closed. The sealing member includes a fluorinated polyether.

Abstract: A liquid ejecting apparatus includes a liquid ejecting unit provided with a nozzle from which liquid is ejected, a liquid supply flow path connected to a liquid supply source and the liquid ejecting unit, and a pump mechanism that includes a pump chamber provided in the liquid supply flow path and that repeats a suction driving operation and a discharge driving operation such that the liquid flows toward the liquid ejecting unit from the liquid supply source. Before maintenance of the liquid ejecting unit is performed by discharging liquid from the nozzle, the pump mechanism performs the suction driving operation until the amount of liquid accommodated in the pump chamber reaches a set value, which is set in advance.

Abstract: A drop ejection system includes a working fluid source containing a working fluid, an ink source containing an ink that is immiscible with the working fluid, and at least one drop ejector array module. Each drop ejector array module includes a substrate and an array of drop ejectors disposed on the substrate. Each drop ejector includes a nozzle; an ink inlet connected to the ink source; a working fluid inlet connected to the working fluid source; a pressure chamber in fluidic communication with the nozzle, the ink inlet, and the working fluid inlet; and a heating element configured to selectively vaporize a portion of the working fluid to pressurize the pressure chamber for ejecting ink drops through the nozzle.

Abstract: Provided is a liquid tank in which air bubbles are less likely to remain in a valve mechanism provided in an on-carriage-type liquid tank. The liquid tank has a liquid supply portion, a first liquid chamber, a second liquid chamber that can contain the liquid to be supplied to the first liquid chamber, and a valve mechanism that is arranged between the first liquid chamber and the second liquid chamber, and the valve mechanism has, inside an exterior wall constituting the valve mechanism, a channel member, a biasing member, a valve body, and a rod from an upstream side of flow of the liquid in the stated order, the channel member is provided inside the biasing member, and includes a first channel in which the liquid can pass, and the exterior wall and the biasing member form a second channel through which the liquid can pass therebetween.

Abstract: A liquid circulation device includes a housing having an outlet and an inlet, a circulation unit configured to convey liquid out of the housing through the outlet and recover liquid into the housing through the inlet, a liquid supplying unit configured to supply liquid into the housing, an air conveying unit configured to convey air into and out of the housing, a level detecting unit configured to detect a level of the liquid in the housing, a pressure sensing unit configured to detect a pressure of the air in the housing, and a control unit configured to control a pressure of the liquid in the housing by controlling the liquid supplying unit or the air conveying unit, based on the level and the pressure of the air.

Abstract: A mixer system for use with a non-contact liquid printer comprises: a printing liquid reservoir and an expansion volume; and an aspirator element, configured to reduce the pressure in the expansion volume, thereby to displace printing liquid from the reservoir to the expansion volume, and restore the pressure in the expansion volume, thereby to return the printing liquid to the reservoir so as to mix the printing liquid therein.

Abstract: There is provided an image recording method including applying a first ink and a second ink, each of which contains a surfactant and the like, to a recording medium. Critical micelle concentration c1 (mass %) of the surfactant and concentration c2 (mass %) of the surfactant in each ink satisfy a relationship of “c1×2?c2”; an HLB value of the surfactant is smaller than 13; content V1 (mass %) of the surfactant in the first ink is larger than content V2 (mass %) of the surfactant in the second ink.

Abstract: A printing method includes a step of forming a first image by ejecting a pretreatment liquid, and a step of forming a second image on the first image by ejecting a colored ink onto the first image. Here, the first image is allowed to include an extra portion by which the edge of the first image exists on the outside of the edge of the second image. Further, an amount of the ejection of the pretreatment liquid onto the extra portion per area at a position on the extra portion is allowed to be decreased further as the position is located further toward the outside from the edge of the second image.

Abstract: In a method for automatic adaptation of a quantity of a coating substance, a coating substance is inkjet printed to a printing region of the recording medium; a first color is over printed across a width of the printing region of the recording medium and atop the coating substance; a print image of a second color is over printed atop the first color; the printing region having been printed to is sensory recorded; a local bleeding behavior of the first and the second colors is analyzed based on the sensory recording; and a printed quantity of the coating substance is locally adapted, based on the analysis of the local bleeding behavior, in segments of the printing region that are affected by bleeding.

Abstract: A recording head has two or more first nozzle rows from which an ink droplet of a first color is discharged, two or more second nozzle rows from which an ink droplet of a second color is discharged, and two or more third nozzle rows from which an ink droplet of a third color is discharged. In a plurality of nozzle rows from which an ink droplet is discharged on the same line along the relative movement direction, a distance between the first nozzle row and the second nozzle row in the relative movement direction is fixed, and a plurality of distances are present regarding a distance between the first nozzle row and the third nozzle row in the relative movement direction.

Abstract: A printing device comprises a droplet generator for generating a droplet of printing fluid, a droplet detector for detecting a generated droplet of printing fluid, and a controller. The droplet detector is moveable along an axis. The controller is to cause the droplet detector to be positioned at a known location along the axis, cause the droplet generator to generate a droplet, receive a measurement signal from the droplet detector, and determine a location of the droplet generator based on the received measurement signal and the known location.

Abstract: A thermal head according to the present disclosure includes: a substrate; a first electrode; a heat generating section; a second electrode; a resin layer; and a protective layer. The first electrode is located on the substrate. The heat generating section is located on the substrate. The second electrode is located on the substrate so as to be electrically connected to the heat generating section and the first electrode. The resin layer is located on the first electrode. The protective layer is located on the resin layer. Moreover, the resin layer includes a first portion inserted in the first electrode.

Abstract: A laser imaging system and method. In an example embodiment, one or more laser diode arrays are associated with a digital micro-mirror device. A shutter-like device can be positioned upstream in the light path of the laser diode array (or arrays) such that the shutter-like device diverts energy out of the laser imaging system and away from the digital micro-mirror device during periods of extended non-imaging. A homogenizer module can be provided wherein the shutter-like device is located.

Abstract: The ink jet printer for the labelling of goods has a write head, which comprises at least one outlet opening for ink droplets, a printing mechanism connected to said outlet opening, a pneumatic pump and an electrical control. It has at least one supply tank for fluid flowing through the outlet opening. The supply tank is releasably connected to the write head in a coupling area. In the write head, a first pressure sensor is arranged at the compressed-air line, which detects the air pressure in the compressed-air line and outputs an air pressure signal to the controller. A second pressure sensor is arranged at the ink line, which detects the pressure in the ink line and outputs an ink pressure signal to the controller. Said controller outputs a signal “ink empty”, if the ink pressure signal declines by more than 10% in relation to the air pressure signal.

Abstract: An ink jet printing method includes attaching an ink composition to a cloth by using a printer head which has a nozzle discharging the ink composition, a pressure chamber for imparting pressure to the ink composition to cause the nozzle to discharge the ink composition, and a connection portion connecting the pressure chamber and the nozzle, and in which a distance of the connection portion is 500 ?m or more, the distance of the connection portion being from a portion of the pressure chamber where the ink flows out from a pressure chamber to the nozzle side to the nozzle, in which the ink composition includes the resin as a solid content in the amount of 10% by mass to 26% by mass with respect to the ink composition, the ratio of the total content of the organic solvent to the total content of the solid content of the resin is 0.3 or more, and a sum of the total content of the solid content of the resin and the total content of the organic solvent is 37% by mass or less with respect to the ink composition.

Abstract: A system and method for treatment of thread includes a thread printer that applies colored coatings to thread and that passes the treated thread to a fabric weaving system. A camera is positioned to capture images of the treated thread as it is woven into a fabric in the fabric weaving system. The system processes the images to determine whether the location of a selected segment of the treated thread in the fabric corresponds to an expected location in the fabric. If the actual location of the selected segment corresponds to the expected location, the system will continue instructing the thread printer to selectively apply the colored coatings to the thread according to the pattern. However, if the actual location does not correspond to the expected location, the system will modify the pattern so that thread printer adjusts the size of a segments to automatically account for the misalignment.

Abstract: A web handling system is disclosed. The web handling system includes first dancer rollers coupled to engage and move a web of a print medium in a forward and backward direction upon stopping a printing operation and allow forward motion during the printing operation.

Abstract: A smaller recording apparatus is provided, and includes a transport device that transports a print target medium using an endless transport belt placed around a plurality of rollers, an inkjet head that performs a recording on a medium on the endless transport belt, and a cleaning unit that cleans the endless transport belt. The cleaning unit includes a cleaner, making contact with the endless transport belt in a width direction thereof, so as to clean the endless transport belt with a cleaning liquid; a cleaning liquid tank, storing the cleaning liquid and includes at least a part of the cleaner; and a moving mechanism, supporting the cleaner and the cleaning liquid tank, and moving the cleaner in a horizontal direction between a contact position where the cleaner makes contact with the endless transport belt and a separated position where the cleaner is separated from the endless transport belt.

Abstract: In one example, a system for a partially dried inkjet media conditioner includes a partially dried Inkjet media conditioner, including: a first connector to couple a first end of the conditioner to a printing device, a second connector to couple a second end of the conditioner to a finishing device, and a constrained path extending through the conditioner to receive partially dried inkjet media from the printing device and provide the partially dried Inkjet media to the finishing device.

Abstract: A printing apparatus includes a drying unit that includes a bring-in port where a medium is brought in and a bring-out port where the medium is brought out, and dries ink applied onto the medium, and in a case in which printing is temporarily stopped and a predetermined maintenance work is performed, the medium is transported in a transporting direction which is a direction toward the bring-out port from the bring-in port in a maintenance work period from starting of the maintenance work to finishing of the maintenance work or in a partial period of the maintenance work period.

Abstract: In certain examples, a printing device comprises a print head, a dryer, a heat exchanger, a distribution system and a controller. The heat exchanger is coupled to an exhaust of the dryer to produce pre-heated air. The distribution system is coupled to the heat exchanger and a plurality of regions of the printing device. The controller causes the distribution system to distribute the pre-heated air from the heat exchanger among the plurality of regions based on an operating parameter of the printing device.

Abstract: A roll medium transport apparatus includes a feed roll medium support unit that feeds a roll medium, a takeup roll medium support unit that winds up the roll medium that has been fed, a position acquiring unit that acquires a position of a side end portion of the roll medium that is to be fed, a radiating unit capable of radiating light with a position of the side end portion being used as a reference point. The radiating unit is held by the feed roll medium support unit and allows the light to be radiated to a takeup roll that winds up the roll medium.

Abstract: A driving device includes a motor, a drive gear, a swing gear, a first gear member, a second gear member, a frame, and a bracket. The swing gear can swing between a first position engaging with the first gear member and a second position engaging with the second gear member. The bracket has a slide hole including a pair of contact parts having an arc shape, and an arc hole part for connecting the pair of contact parts with a first sliding surface farther from the drive gear and a second sliding surface nearer to the drive gear. The first sliding surface has a shape retracting to the opposite side to the rotation shaft from tangential lines of the rotation shaft contacting with the contact parts, which are parallel to pressure angle directions between the drive gear and the swing gear, or a shape coinciding with the tangential lines.

Abstract: In one example a method is disclosed for printing duplex images. The method includes printing an image on side A of media, including an alignment mark. Detecting the alignment mark with a sensor. The velocity of the media is determined when the alignment mark is detected. Printing an image on side B of the media where the location of the image on side B is dependent on the velocity of the media. In another example a printer is disclosed that uses the method to print duplex images.

Abstract: A printer includes: a holding member configured to hold a roll of paper; an elastic member configured to support the holding member so that the holding member is slidable in a vertical direction; a first detection unit configured to detect a position of the holding member; and a second detection unit that detects a near-end of the roll of paper based on a detection result by the first detection unit.

Abstract: A printer uses at least two centrally positioned single nip de-skew, lateral registration, and process direction registration devices to remove skew, laterally register, and register in the process direction substrates moving along a media transport path. The single nip de-skew, lateral registration, and process direction registration devices include a fixed roller having a low coefficient of friction and a length longer than a rotating wheel that forms a nip with the fixed roller having a high coefficient of friction to enable an actuator to move the rotating wheel along the fixed roller to laterally register and de-skew substrates.

Abstract: A media sheet drive has a continuous belt of a dielectric material for transporting sheet media supported on the belt in a transport direction. A launch mechanism is used to launch a sheet medium onto a top surface of the belt. A charging circuit including a charging roller is used to charge a top surface of the sheet medium and the belt as the sheet medium is launched. Charging acts to generate an electrostatic tacking force to tack the sheet medium to the belt. The charging roller has a second function to smooth out curled edges of paper as it is acted on by the charging circuit so that the full extent of a launched sheet medium may be subject to the electrostatic tacking force.

Abstract: A recording apparatus includes a paper discharging tray constituted of a first tray and a second tray which are capable of being displaced along a medium discharging direction, the paper discharging tray can be stored in the recording apparatus, a motor which drives the paper discharging tray and a transmission unit which transmits power of the motor to the paper discharging tray includes a first gear which comes into contact with the first tray and transmits the power of the motor to the first tray and a second gear which comes into contact with the second tray and transmits the power of the motor to the second tray.

Abstract: A tape includes: a sheet; first and second media; a first separating line located between first and second media of one pair and extending between first and second ends of the sheet in a widthwise direction; a first cutting portion formed through the first medium and extending from a first end of the first medium to a first endpoint; a second cutting portion formed through the second medium and extending from a first end of the second medium to a second endpoint; and second and third separating lines extending in a longitudinal direction between the first endpoint and a first-medium end portion and between the second endpoint and a second-medium end portion, respectively. A side of the first endpoint on which the first-medium end portion is located is identical in the longitudinal direction to a side of the second endpoint on which the second-medium end portion is located.

Abstract: A unit attaching structure configured to attach a unit to an attachment part of a printing device. The attachment part has a bottom wall and a side wall intersecting with the bottom wall. When the unit starts contacting a pressing plate, the unit contacts a contacting part which is a part of a particular end part of the pressing plate on a side opposite to the bottom wall and shifted in the third direction with respect to a position of center of load of gravity of the urging member to the pressing plate. The unit moves with contacting the pressing plate and is attached to the attachment part after contacting the contacting part. A contacting range, in the third direction, of the unit and the contacting part is smaller than a contacting range, in the third direction, of the unit attached to the attachment part and the pressing part.

Abstract: A printing system includes a base, a print head assembly, a print bed, and a shielding panel. The print head assembly is slidably coupled with the base and is slidable along a longitudinal path. The print head assembly includes a print head that is configured to selectively dispense a printing medium therefrom. The print bed is slidably coupled with the base and is slidable along a lateral path between a retracted and extended position. The print bed includes a lower tray that includes an outer edge. The shielding panel includes an upper surface. The shielding panel overlies at least a portion of the outer edge of the lower tray. The upper surface of the shielding panel is formed of a light absorbent material that has a hemispherical reflectance of between about 0% and about 5% for a light spectrum range of between about 220 nm and about 400 nm.

Abstract: A portable printing cabinet having a housing with a substantially enclosed interior and an opening formed in a side surface thereof, a printing device located within the interior of said housing, and a paper tray positioned outside of the housing and in communication with the opening of the housing is provided.

Abstract: In a liquid ejecting apparatus, a cover member, which is provided so that a part thereof is located in an external region of a housing and is displaceable between a closed position where a pouring port pouring a liquid is not exposed and an opened position where the pouring port is exposed, is at a position different from a position where the cover member overlaps an apparatus main body in a case where the apparatus main body is viewed from an upper surface of an image reading device at the opened position, and a liquid containing portion is provided at a position where at least a part of a liquid replenishment member connected to the pouring port overlaps the image reading device in a case where the apparatus main body is viewed from the side surface when the cover member is located at the opened position.

Abstract: A controller: generates a first corrected pulse signal by correcting a received first pulse signal or generate a second corrected pulse signal by correcting a received second pulse signal, based on a difference value between a first rotation cycle of a first roller and a second rotation cycle of a second roller such that a difference between a first pulse cycle of the received first pulse signal and a second pulse cycle of the received second pulse signal is reduced; upon generating the first corrected pulse signal, controls first print timings in respective first print mechanisms of a first printer based on the generated first corrected pulse signal; and upon generating the second corrected pulse signal, controls second print timings in respective second print mechanisms of a second printer based on the generated second corrected pulse signal.

Abstract: A drying apparatus usable with a printing system includes a housing, a first set of radiative heating elements, a second set of radiative heating elements, and an air handling device. The housing includes a front region and a rear region adjacent to the front region. The front region includes an inlet to receive media. The rear region includes an outlet to pass media there through. The first set of radiative heating elements is disposed within the front region to heat the media. The second set of radiative heating elements is disposed within the rear region to heat the media. The air handling device is disposed across from the second set of radiative heating elements to jet air within the rear region to cool the media prior to the media being passed through the outlet.

Abstract: Provided is an ink jet recording method for recording an image on a recording medium by making use of an aqueous reaction liquid containing a reactant and first and second inks which are aqueous inks containing a coloring material. This method has a step of applying the reaction liquid to a first recording medium, a step of applying the first and second inks, in order of mention, to the first recording medium to form a first image and a step of bringing a porous layer of a liquid absorption member into contact with the first image and thereby absorbing a liquid component therefrom. The second image has brightness higher than that of the first ink.

Abstract: A method for digital printing in quantity, including the steps of providing a conveying unit adapted to convey printing substrates, setting a running velocity, providing a digital printer, providing a graphics file as input to the digital printer representing a motif to be reproduced on the printing substrates at a predefined resolution, calculating a decoration frequency for printing with decorative inks as a function of the predefined resolution and of the running velocity, calculating single material printing frequencies for each one of the material inks, calculating a synchronized printing frequency, calculating a scaling factor, calculating an actual printing frequency as a function of the scaling factors, calculating an actual printing resolution as a function of the actual frequency of material to be deposited and of the running velocity, and printing on the printing substrates at the actual printing resolution.

Abstract: A thermal transfer ink composition, a domestic thermal transfer kit, and a thermal transfer method is provided. The thermal transfer ink composition comprises a disperse dye, a resin, an additive, an auxiliary solvent and a main solvent. The domestic thermal transfer kit comprises an ink cartridge, a writing instrument, high temperature resistant tapes and writing media. The writing instrument comprises a cotton core type, a capillary liquid type and a valve type; The method comprises the following steps: using a writing instrument to form writing marks on the surface of a writing medium; pasting the writing medium onto the surface of a thermal transfer medium by the use of high temperature resistant tapes; applying a heat source to the writing medium and then removing the heat source to obtain the well-transferred thermal transfer medium.

Abstract: The purpose of the present invention is to provide a thermal transfer sheet which can prevent a kick and a scumming, and can form a photographic tone color image of high quality with a continuous tone image by sublimation transfer, while expanding the range of choices for colorants to be included in a colorant layer; a coating liquid for colorant layer to be used for forming the colorant layer of this thermal transfer sheet; a method for manufacturing this thermal transfer sheet; and image forming method employing this thermal transfer sheet.

Abstract: A security element (1) for a security paper, value document or the like, having a carrier (8) which has an areal region (3) which is divided into a multiplicity of pixels (4) which respectively includes at least one optically active facet (5), whereby the majority of the pixels (4) respectively have several of the optically active facets (5) of identical orientation per pixel (4), and the facets (5) are so oriented that the areal region (3) is perceptible to a viewer as an area that protrudes and/or recedes relative to its actual spatial form.

Abstract: The invention relates to an optically variable security element (20) for securing valuable articles, having an achromatically reflective micropattern in the form of a mosaic (22) including a plurality of achromatically reflective mosaic elements (26-1, 26-2) that are characterized by the parameters size, contour shape, relief shape, reflectivity and spatial orientation and that form a predefined motif in that different groups of mosaic elements (26-1, 26-2) having different characteristic parameters reflect incident light (28) in different spatial regions (30). The mosaic elements (26-1, 26-2) exhibit a lateral dimension below the resolution limit of the eye.

Abstract: A marker pen that allows a user to mark, write, or draw on hard to reach surfaces is disclosed herein. The marker pen includes an angularly displaceable tip to allow a user to mark, write or draw at various angles with respect to the body the marker pen. The angular displacement of tip is facilitated by a tip holder, which facilities the coupling between the tip and body of marker pen. The tip holder includes a first case, second case, and rotational shaft passing through concentric openings formed on first and second case. The tip is snugly fit onto a rotational shaft that allows it to be moved between a predetermined angular range.

Abstract: A knock type pen includes a body in which a lead and a spring which provides an elastic force to the lead are received, and a knock section which is coupled to a rear end of the body and includes a knock body and a rotary cam to push the lead out of a tip of the body or receive the lead inside, wherein the knock type pen includes a cutout groove which extends in one direction along an axial direction of the body, a slit hole which extends along a downward direction from an upper end of the cutout groove, an insert hole which is formed in a direction perpendicular to the slit hole from the upper end of the cutout groove, and a locking section which moves up and down along the slit hole.

Abstract: A side-knock type mechanical pencil comprising a body with a side-mounted knock button coupled to the body of the mechanical pencil and adapted to slidingly engage with a lead tube with a frustoconical hub for translating the motion of the knock button actuation to linear extension of the lead.

Abstract: The flat foil printing press comprises an evacuable back-pressure plate (9), with suction regions (15k) which run in the sheet running direction (X) and which are next to embossing regions (16k), in which foil webs (6k) run. The suction regions are subdivided into several suction segments (10i) which are successive in the sheet running direction, and are each connected to a vacuum source (14) by way of a vacuum feed line (12i) via a vacuum switching element (13i). With the running-out of an embossed sheet (5), firstly all suction segments (10i) covered by the sheet are evacuated, and subsequently the suction segments which are no longer covered by the sheet are successively disconnected from the vacuum source. This results in an error-free separation of foil webs and sheets, for a greater picture quality and machine output.

Abstract: An assembly for mounting deer antlers is provided, the assembly generally comprising an enclosure, the enclosure generally shaped like a game ball such as a football, and comprising a front portion and a rear portion, the enclosure being adapted to couple end portions of main beams of the antlers to an inside surface of the enclosure rear portion such that portions of the antlers extend through lateral holes, to an area outside the enclosure, the enclosure front and rear portions being removably coupled to one another.

Abstract: A combination structure of a hub and spokes is provided, including: a hub shell, having separate small and large flanges, the small and large flanges having first and second assembling holes, respectively; a plurality of first spokes, assembled to one of the first assembling holes and a wheel rim; a plurality of second spokes, including cylindrical spokes and aero bladed spokes, the cylindrical spokes and aero bladed spokes being alternatively assembled to the second assembling holes and to the wheel rim; as viewed along an axial direction of the hub shell, every two of the second spokes which are neighboring to each other intersect with each other to define an intersecting area, each first spoke extends and passes through one of the intersecting areas.

Abstract: A wheel with adjustable radius or tread firmness including a hub assembly, primary spokes, a suspension assembly positioned at the outer end of each primary spoke, and treads attached to the outer end of each suspension assembly. The hub assembly includes a radius lock and a tensioner lock. When each is in a locked position, the radius and tread firmness of the wheel remains constant. When the radius lock or the tensioner lock is in an unlocked position, the radius or the tread firmness, respectively, is adjusted by rotating the wheel relative to internal components of the hub assembly. This relative rotation adjusts the tension on internal cords to adjust the length of the primary spokes or flexibility of the suspension assemblies, respectively. Optionally, secondary spokes may be positioned between each of the primary spokes and the suspension assemblies. The radius and tread firmness is adjustable under a load.

Abstract: A wheel for vehicle 1 is provided with a disc 10 and a rim 20 and has a braking device 30 housed therein. An annular flange portion 41 protruded inward from a bead seat portion 22 in a radial direction of the wheel 1 is disposed at an end of the rim 20 on a side opposite to the disc 10. The flange portion 41 has an inclined surface 41a on a side opposite to the disc 10. The flange portion 41 is inclined toward the disc 10 in a direction toward a central axis L of the wheel 1. The inclined surface 41a acts to reduce air resistance at the wheel 1 while the vehicle is running and guides a portion of an underfloor airflow to an inner space of the wheel 1 to secure an amount of air for cooling the braking device 30.