Abstract: A liquid ejection head includes a substrate having an ejection opening through which a liquid is ejected, a recessed member having a wall defining a recess in which the substrate is disposed away from the wall with a gap therebetween, and a sealing member filling the gap. The sealing member includes a cured product of a composition containing a first polyol compound, an isocyanate compound having an isocyanate group, and a second polyol compound that is more reactive with the isocyanate group than the first polyol compound.

Abstract: A thermal print head includes: a substrate having an obverse surface; a plurality of heat generators arranged on the substrate in a main scanning direction; and a wiring layer provided on the substrate and constituting an energization path to the heat generators. The substrate has a protrusion protruding from the obverse surface and extending in the main scanning direction. The protrusion has a top portion having the largest distance from the obverse surface, and an inclined portion connected to the top portion in a sub-scanning direction. The inclined portion is inclined relative to the obverse surface at a predetermined angle. Each of the plurality of heat generators extends across a boundary between the top portion and the inclined portion. Each of the heat generators is formed on at least a part of the top portion and at least a part of the inclined portion in the sub-scanning direction.

Abstract: A first channel member of a liquid ejection head includes a plurality of plates stacked through an adhesive. A first plate includes a second groove configuring the second common channel, and a plurality of first grooves which are communicated with the second groove from a wall surface of the second groove and individually configure a plurality of third individual channels. A second plate is bonded to a top surface of the first plate and configures an upper surface of the second common channel. The first plate includes an extension part which extends outward from the wall surface of the second groove between an end part position of one end of the second groove and a connection position closest to the end part position among connection positions of the plurality of first grooves with respect to the wall surface of the second groove.

Abstract: A manufacturing method for a bonded-substrate article includes a first bonding where a first bonding region of a first substrate and a third bonding region of a second substrate are bonded at a first temperature, and a second bonding, following the first bonding, where a second bonding region of the first substrate and a fourth bonding region of the second substrate are bonded at a second temperature. The first temperature is lower than the second temperature.

Abstract: Examples include a plastic-based support substrate and at least one fluid ejection die coupled thereto. The at least one fluid ejection die comprises a nozzles for dispensing printing material. The plastic-based support substrate has a fluid communication channel formed therethrough, where the fluid communication channel is in fluid communication with the nozzles of the at least one fluid ejection die.

Abstract: A removable module for an inkjet printer comprises: a housing; a plurality of fluid conduits; two cartridge connections; a printer connection; and an electrical link. The plurality of fluid conduits are disposed within the housing. The two cartridge connections are each for releasable engagement with a fluid cartridge. Each cartridge connection is exposed by the housing and comprises: a fluid connector for engaging an outlet of a fluid cartridge to allow fluid to flow from the engaged cartridge to one of the plurality of fluid conduits; and an electrical contact arranged to contact a corresponding contact on the engaged fluid cartridge. The printer connection is for releasable engagement with an inkjet printer.

Abstract: There is provided a tank including: a wall defining a liquid storage chamber, the wall including: an upper wall defining an upper end of the liquid storage chamber, a lower wall defining a lower end of the liquid storage chamber, and an erected wall between the upper wall and the lower wall and through which the liquid inside the liquid storage chamber is visible from outside of the tank; an inlet penetrating through the upper wall or the erected wall; and an outlet, wherein the lower wall includes an upper stage wall making contact with the erected wall; a lower stage wall located at a position separated and away from the erected wall and below the upper stage wall; and a connecting wall connecting the upper and lower stage walls; and the outlet is disposed below the upper stage wall.

Abstract: The present subject matter relates to printhead-integrated ink level sensor (PILS) system. In an example implementation, the PILS system includes a sense capacitor plate in a fluid sensing chamber to sense a level of fluid in the fluid sensing chamber. The fluid sensing chamber is in fluid communication with a fluid reservoir of the printhead to receive fluid from the fluid reservoir. The sense capacitor plate includes at least one slot. The PILS system further includes at least one central clearing resistor and at least one peripheral clearing resistor to clear the fluid sensing chamber of the fluid. The central clearing resistor is provided in the at least one slot of the sense capacitor plate. The at least one peripheral resistor is provided in the fluid sensing chamber surrounding the sense capacitor plate.

Abstract: Water-based ink comprising a pigment mix and a method to form a digital print on a substrate with a pigment mix comprising large pigments and a Piezo ink head equipped with an ink circulation system, the method including: providing a water-based ink including an aqueous pigment mix including settling pigments, a binder including an acrylic resin dispersion, and a viscosity increasing substance including glycol and/or glycerine, providing a steric stabilization of the pigments and adapting the size of the pigments and the viscosity of the water-based ink such that a settling velocity of the pigments exceeds about 0.001 mm/min at 25° C., circulating said water-based ink within said at least one Piezo print head, and printing a digital image with said at least one Piezo print head by applying ink drops of said water-based ink on the substrate.

Abstract: In accordance with an embodiment, a printing apparatus comprises a printing section, a first temperature sensor and a processor. The printing section carries out printing on a sheet through heating. The first temperature sensor measures a temperature of the sheet on which the printing section carries out the printing. The processor sets a heating amount on the basis of the temperature of the sheet and controls the printing section to carry out printing through the heating amount.

Abstract: A system for forming a structure on a print medium 1 includes: a print unit (print device) 10 for printing an electromagnetic wave-heat conversion layer for converting electromagnetic waves into heat, on a medium including an expansion layer that expands by heating; an expansion unit (expansion device) 20 aligned laterally with the print unit 10, for expanding the expansion layer by irradiating the medium with electromagnetic waves; and a top plate 30 covering the print unit 10 and the expansion unit 20 from above.

Abstract: The present invention refers to a plant (1) for printing, particularly for digitally printing, a sheet fibrous material (T), said printing plant (1) comprising: a conveyor belt (2) configured for temporarily receiving in contact a first side (T1) of the sheet fibrous material (T) and—during a predetermined operative condition—for continuously moving said sheet fibrous material (T) at a speed constantly greater than 0 along an advancement direction (A); one preparing station (4) configured for placing on the sheet fibrous material (T) a treatment composition (M) comprising at least one of: a treatment liquid and a treatment foam; a printing station (6) adapted to ink-print at least part of a second side (T2), opposite to the first side (T1), of the sheet fibrous material (T).

Abstract: A lamp array for drying liquid ink on a media in a printing apparatus. The printing apparatus includes a transport system arranged to move the media through the printing apparatus in a process direction. The lamp array includes a plurality of lamps, each lamp of the plurality of lamps having a longitudinal axis arranged in a direction parallel to the process direction and adjacent to the transport system, wherein the plurality of lamps are equidistantly positioned substantially across a cross process width of the transport system.

Abstract: Scan printing systems and methods for reducing banding artefacts of an image printed on a substrate, including a substrate feeder assembly, a printhead adapted to print an encoder pattern on the substrate, a sensor, and a controller. The controller performs a feedback cycle of positioning the substrate relative to the printhead and instructs the printhead to print a band of the image when the encoder pattern has reached a target position. The controller repeats the feedback cycle of positioning the substrate relative to the printhead and instructs the printhead to print a subsequent band of the image until the entire image is printed on the substrate.

Abstract: A media transport system for conveying sheets of media along a process path extending from a media-uptake zone and thereafter through a print zone. The system includes a transport belt for holding the sheets of media generally flat via vacuum for ink jet printing. The media transport system includes a seamed vacuum transport belt, and a platen supporting the belt. The belt comprises a partially-conductive coating having a surface resistivity of from about 101 to about 106 ohms per square on a polymeric substrate. The partially-conductive coating comprises a polyester and a conductive component such as carbon black, and optionally includes a plasticizer and a leveling agent. The polymeric substrate is either a thermoplastic or a thermoset material.

Abstract: There is provided a printing apparatus including: a frame; a platen facing a thermal head; a moving mechanism having first and second rollers; a motor; a transmitting mechanism; a clutch provided on the transmitting mechanism; a communication interface performing communication with an external apparatus; and a controller. The controller is configured to: start the driving of the motor toward one direction in a state that the clutch is in the connected state, after receiving a print signal, indicating that the print medium is located at a printable position; and to allow the clutch to be in a cutoff state and stop the driving of the motor toward the one direction, after ending of printing in accordance of the receiving of the print signal and before arrival of the moving mechanism at an end on a second side, opposite to the first side, in the specified direction of the moving range.

Abstract: A pick attempt of a media sheet from a media tray is initiated by rotating a pick roller a number of rotations that is set to greater than one in response to the sheet having been designated as a special media sheet type and that is set to one in response to the sheet not having been so designated. In response to a pick sensor detecting the sheet after the pick attempt has been attempted, a turn roller is rotated to advance the sheet to a print engine, and while the turn roller is rotating, the pick roller is rotated to assist advancement of the media sheet. A controller manages per-sheet and per-tray pick attempt counters while the sheet is individually attempted to be picked and advanced, using the counters to determine whether to initiate another pick attempt of the sheet when a current pick attempt has failed.

Abstract: The tape cartridge including a roll by around which the tape is wound in a roll shape, a cartridge case in which the roll body is accommodated and which is common to the plurality of types of the tape cartridges, a spacer portion that is provided between the cartridge case and a first end surface which is one end surface of the roll body, and has a varying size in a tape width direction depending on the type of the tape cartridge such that a position of the center of the tape is common to the plurality of types of the tape cartridges in the tape width direction, and an urging member that is provided between the cartridge case and a second end surface which is another end surface of the roll body and urges the roll body to a first end surface side.

Abstract: A housing for an industrial machine, consists of first and second oppositely facing plates. Two cross beams are connected between the first and second plates to make the first and second plates into endplates of an enclosure for the industrial machine which may be placed inside. Front and rear pivoted closures are located between the endplates above the enclosure, which are opened to provide access to the enclosure for repair, maintenance etc., of the industrial machine housed therein.

Abstract: Apparatus for use in continuous inkjet printing, comprising: a cabinet, an ink system located in the cabinet, the ink system comprising, an ink pump, an ink system air inlet, and an ink system air outlet, and an air circulation device arranged to cause air to flow within the cabinet. The air circulation device is arranged to cause air to flow along a predetermined air flow path through the ink system air inlet, past the ink pump, and through the ink system air outlet.

Abstract: A printer that incorporates a spectrometry device includes a spectroscope, a distance measurer, and a spectrometry unit. The spectroscope includes a wavelength-selective interference filter on which light from a position of measurement in a medium is incident. The distance measurer measures the distance between the position of measurement and the spectroscope, and the spectrometry unit performs spectrometry at the position of measurement by using the spectroscope and correct a measured value obtained by the spectrometry based on the measured distance.

Abstract: A coated print medium can include a base stock having a basis weight of 35 gsm to 250 gsm, and a coating layer applied to the base stock at from 1 gsm to 50 gsm by dry weight. The base stock can include from 65 wt % to 95 wt % cellulose fiber with 20 wt % to 100 wt % being mechanical pulp, and from 5 wt % to 35 wt % inorganic pigment filler. The coating layer can include inorganic pigment particles having an average equivalent spherical diameter from 0.2 ?m to 3.5 ?m; a fixative agent including metal salt, cationic amine polymer, quaternary ammonium salt, quaternary phosphonium salt, or mixture thereof; and a polymer blend including water soluble polymer and water dispersible polymer having a Zeta potential greater than ?40 mV, wherein a weight ratio water soluble polymer to water dispersible polymer is from 1:25 to 1:1.

Abstract: Described is a printing method comprising: forming an organic material layer on a non-printing region of a substrate, the burning point of the organic material layer being lower than the pre-curing temperature of glass glue; performing printing processing on the substrate so as to form the glass glue on a printing region of the substrate; and performing a burning processing of the organic material layer so as to separate the organic material layer from the substrate. Such a printing method can effectively avoid the occurrence of the printing offset and burrs and thus greatly reduce the rate of defective goods.

Abstract: The present invention provides an alignment film printing plate and a manufacturing method thereof. The alignment film printing plate includes a backing protection layer (1) and a bottom sheet (2). The bottom sheet (2) includes a plurality of first circular bumps (21) formed on and distributed in a circumferential edge portion thereof and a plurality of second circular bumps (22) formed on and arranged in a central portion of the bottom sheet (2) and surrounded by the plurality of first circular bumps (21). The first circular bumps (21) have a diameter smaller than a diameter of the second circular bumps (22).

Abstract: A method for forming a flexographic plate for an image pattern including image features. The image pattern includes an array of image pixels, wherein the image pixels include printing pixels corresponding to portions of the image pattern where ink is to be printed on a substrate by the flexographic plate. Edge regions and interior regions of the image features are identified, which are separated by gap regions. A fine texture pattern is applied to the edge regions and a coarse texture pattern is applied to the interior regions to form a textured image pattern which is used to form the flexographic plate. No texture pattern is applied to the gap regions thereby leaving gaps between the edge regions and the interior regions of the image features.

Abstract: The present disclosure relates to cleaning a surface in a printing device, wherein a steam guiding member directs a steam flow towards the surface; wherein the steam flow interacts with a substance on said surface to clean a portion of the surface.

Abstract: A lithographic printing plate precursor, comprising a layer arrangement according to any one of the following (i) to (iv): (i) a support and an image recording layer; (ii) a support, an undercoat layer, and an image recording layer; (iii) a support, an image recording layer, and a protective layer; or (iv) a support, an undercoat layer, an image recording layer, and a protective layer, wherein: a layer containing a hydrophilic agent is included in the layer arrangement between the support and an innermost layer, between adjacent layers, or on an outermost layer other than the protective layer, the layer containing a hydrophilic agent contacts a region of at least one of, but not all of, the support, the undercoat layer, the image recording layer, or the protective layer, and an amount of sag of an end portion of the lithographic printing plate precursor is from 30 ?m to 150 ?m.

Abstract: An anti-counterfeiting method, system, and non-transitory computer readable medium an anti-counterfeiting system, include a production circuit configured to produce a Directed Self-Assembly (DSA) pattern including a unique pattern, an analysis circuit configured to analyze the unique pattern, an embedding circuit configured to embed the unique pattern on a document, and a verification circuit configured to verify that the unique pattern embedded on the document corresponds to the document.

Abstract: A semi-transparent security element which upon viewing in incident light and in transmitted light has different colors, comprises either (a) a transparent carrier substrate having a front side and a back side. The front side has a metallic layer “V-a” dyed in a first color, obtainable by printing technology by means of dyed metal pigments. The back side has an ink layer appearing in a second color “R-a” and a metallic layer “R-b” dyed in a first color, obtainable by printing technology by means of dyed metal pigments; or (b) a transparent carrier substrate having a front side and a back side. The front side has a semi-transparent metallic layer “V-A” and an ink layer appearing in a first color “V-B” and the back side has an ink layer “R-A” appearing in a second color, a semi-transparent metallic layer “R-B” and an ink layer “R-C” appearing in a first color.

Abstract: A multiple-image display body includes a spacer layer, a line tone barrier layer stacked on the first surface of the spacer layer, and a multiple-image formation layer stacked on the second surface of the spacer layer. The line tone barrier layer includes first regions, which transmit electromagnetic waves, and second regions, which absorb electromagnetic waves. The multiple-image formation layer includes images that are visible when observed from specific angles over the first regions of the line tone barrier. The image is formed by a contrast resulting from an area ratio of the third region, which scatters electromagnetic waves, and the fourth region, which absorbs electromagnetic waves.

Abstract: A method of forming a palette includes obtaining a foldable palette blank, the foldable palette blank including a working portion, the working portion defining a first working surface and a second working surface opposite from the first working surface, the working portion defining a working hand hole, the working portion defining a reservoir hole extending from the first working surface to the second working surface; and a support portion, the support portion defining a first support surface and a second support surface opposite from the first support surface, the support portion defining a support hand hole, the support portion configured to cover an end of the reservoir hole; positioning the working portion in facing contact with the support portion; aligning the working hand hole with the support hand hole; and covering the end of the reservoir hole with the support portion to form a reservoir.

Abstract: A shielding structure for a wheel having a turning axis, a rim, and a tire mounted to the rim for rolling against an underlying surface. The wheel has axially oppositely facing sides. A mounting assembly is attached to the rim to move as one piece therewith. A plurality of shielding components are attached to the mounting assembly to overlie at least a part of the tire at one of the axially oppositely facing sides of the wheel. At least one of the shielding components is made from a non-metal material and a reinforcing element.

Abstract: A multi-width dual wheel arrangement and method utilize a dual wheel spacer and a clamping disk for selectively mounting a dual wheel having a rim to a first wheel at a desired axial spacing of the dual wheel from the first wheel along a rolling axis of the dual and first wheels. The clamping ring is positioned outboard of the rim to clamp the rim between the clamping ring and the spacer for positioning the dual wheel at a first axial spacing from the first wheel along the rolling axis. The clamping ring is positioned inboard between the rim of the dual wheel and the dual wheel spacer for positioning the dual wheel at a second axial spacing from the first wheel. A third axial spacing is provided by configuring the rim to have a convex surface that may be electively positioned facing toward or away from the first wheel.

Abstract: A traction device for installation between a set of dual wheels on a vehicle, the traction device including a wheel attachment plate, at least one leg and at least one paddle. The wheel attachment plate is centrally coupled between each of the wheels. The at least one leg is coupled to the wheel attachment plate between the wheels. The at least one paddle is coupled to the leg and positioned radially outward from the wheel attachment plate.

Abstract: A wheel may include a centerless rim with a rail with a driving feature, where the rail protrudes towards a middle of the centerless rim in a first plane. The wheel may also include a stationary hub positioned along a second plane generally parallel with the first plane. The wheel may additionally include a roller guide assembly that includes a support member coupled to the stationary hub and configured to bridge the rail, and first and second roller guides coupled to the support member and positioned to roll along the centerless rim adjacent to and on either side of the rail. The wheel may additionally include a spring positioned to bias the first roller guide against the centerless rim.

Abstract: Disclosed herein is a lug drive system for a wheel such as that found on a motorcycle. The lug drive system includes a 2-piece lug drive hub assembly mounted on one side of the wheel to apply a driving force thereto. The lug drive hub assembly includes a lug drive sprocket and a hub that are detachably connected together by an inner retaining ring. The lug drive sprocket includes an outer drive ring and an inner carrier disk that are detachably connected together by an outer retaining ring. The lug drive system also includes a 2-piece lug drive rotor assembly mounted on the opposite side of the wheel to apply a braking force thereto. The lug drive rotor assembly includes a lug brake rotor and a hub that are detachably connected together by an inner retaining ring. The lug brake rotor includes an outer friction ring and an inner carrier disk that are detachably connected together by an outer retaining ring.

Abstract: A tool for use with a vehicle jack or vehicle wheel fastener including an operation shank, a first segment and a second segment. The first segment may include a connection end coupled to the operation shank, a distal end spaced from the operation shank, and a first slot extending longitudinally in a first direction. The second segment may include a first end and a second end opposite to the first end, with the second segment movably connected to the first segment. The second segment movable in the first direction so the first end of the second segment extends beyond the distal end of the first segment and the second segment is movable in a second direction opposite to the first direction so the second end extends beyond the connection end.

Abstract: The present invention discloses an installation structure for a wheel axle assembly and a wheel fork, a frame and a vehicle. The wheel axle assembly includes a wheel axle; a first bearing, a bush and a second wheel axle sleeved on the wheel axle successively; and a hub arranged on the outer rings of the first bearing and the second bearing, wherein the bush is used for spacing apart the first bearing and the second bearing axially a predetermined distance, and the hub is of a sleeve shape and an end thereof arranged on the first bearing expands the outer diameter to form a flange portion for fixing and installing a wheel; and the wheel fork includes a wheel fork body and a frame connection portion formed on an end of the wheel fork body and forming an L shape with the wheel fork body for connecting to a frame, and the wheel axle is fixed on the other end of the wheel fork body in a direction perpendicular to the rim center plane of the wheel.

Abstract: The present disclosure relates to an axle beam, in particular an axle bridge, for a motor vehicle, preferably a commercial vehicle. The axle beam has a first axle beam shell and a second axle beam shell which is connected, in particular welded, to the first axle beam shell in order to configure a tubular body. The tubular body has an inner circumferential face with a plurality of flat sections which form a non-round cross section of the tubular body. The axle beam has a reinforcing component which has a non-round cross section, is arranged within the tubular body, and bears at least partially against the flat sections of the inner circumferential face of the tubular body.

Abstract: A tire includes a tire frame member that is formed from a resin material and has a bead portion, side portions, and a crown portion, a belt layer serving as an example of a reinforcing layer that is disposed at the outer side in a tire radial direction of the tire frame member, and has a higher bending rigidity than outer circumferential portions of the tire frame member, a top tread serving as an example of a tread that is formed from a rubber material and is disposed at the outer side in the tire radial direction of the belt layer, and first width direction grooves serving as an example of width direction grooves that are provided at the top tread. An aperture surface area of one of the first width direction grooves within a total ground contact surface of the tread of one circumferential direction portion of the tire is 0.02% or less relative to a surface area of a total ground contact surface of the tread of one circumferential portion of the tire.

Abstract: A green tire includes a plurality of sheets of green rubber having a substantially circular shape, wherein each sheet of green rubber includes an upper ring and a lower ring, and each sheet of green rubber further includes a plurality of spoke portions extending from the upper ring to the lower ring. The green tire further includes a plurality of reinforcements. Each reinforcement is disposed between adjacent sheets of green rubber. At least one reinforcement is sandwiched between the upper rings of adjacent sheets of green rubber, and at least one reinforcement is sandwiched between the spoke portions of adjacent sheets of green rubber.

Abstract: Disclosed herein are a tire ply steel fabric having specified weft cords, a rubber covered tire ply comprising the tire ply steel fabric, tires comprising the rubber covered tire ply, and related processes for producing a tire ply steel fabric with specific weft cords and for producing a rubber covered tire ply comprising the tire ply steel fabric. The tire ply steel fabric comprises a plurality of steel warp cords and a plurality of weft cords each weft cord having a core-sheath construction wherein the core comprises at least one filament of a non-metallic material having a specified Eb and the sheath comprises a different non-metallic material having a specified Eb that is lower than the Eb of the core material.

Abstract: The tire has a load index that is at least 118 and two layers of reinforcing elements. Each of the layers has a breaking force per unit width that is higher than 2900 daN/dm. A minimum strength per unit width, measured for an elongation of less than 10%, of the second layer is greater than 20% of the minimum strength per unit width, measured for an elongation of less than 10%, of the first layer. The reinforcing elements of the first layer have a thread count that is higher than 300 tex. The reinforcing elements of the two layers have a thread count of less than 750 tex. The elongation of the reinforcing elements of the second layer are greater than 8% under a force of 20 daN and the secant elastic modulus values under tension at 10% elongation, Mt, Mj, satisfy the relationship Mt/Mj?1.

Abstract: Technique to increase the endurance of tires comprising two crossed working layers (41, 42), comprising mutually parallel reinforcing elements that form, with the circumferential direction (XX?) of the tire, an angle which is at least equal to 20° and at most equal to 50°. The reinforcing elements are made up of individual metal threads or monofilaments having a cross section which is at least equal to 0.20 mm and at most equal to 0.5 mm. The tire also comprises axially exterior sipes (24) having a mean width W at most equal to 1 mm, of a depth D at least equal to 5 mm and spaced apart, in the circumferential direction (XX?), by a circumferential spacing P at least equal to 4 mm, and axially exterior grooves (25) having a mean width W at least equal to 1 mm, of a depth D at most equal to 5 mm.

Abstract: Pneumatic tire for heavy duty vehicles having a crown portion comprising two working plies (114,116) and a breaker ply (120) radially outward of the carcass body ply wherein the breaker ply (120) comprises a plurality of breaker ply reinforcement elements (122) having a length L of no more than 155 mm, at an angle of 5°<60°.

Abstract: A pneumatic tire, includes: an annular-shape tread portion; a sidewall portions; and bead portions. JIS hardness of tread rubber is within a range of 40 to 60 and snow traction index is 180 or higher. A rib positioned between circumferential grooves is demarcated in a center region of the tread portion. Closed grooves are formed in the rib. The closed grooves are inclined with regard to a tire axial direction such that a closed end faces a leading side. A groove wall of the closed groove on the leading side protrudes more outward in the tire axial direction than a groove wall on a trailing side. A difference between angles ?1 and ?2 of the groove walls on the leading and trailing sides of the closed grooves, respectively, with regard to the tire axial direction is within a range of 0°??1-?2?5°.

Abstract: Tire (1) for a heavy-duty vehicle of civil engineering type, and more particularly to the tread (2) thereof, and seeks to improve the grip thereof, while at the same time ensuring a satisfactory compromise with wearing and thermal endurance. The tread (2) comprises cuts (3, 4, 5) distributed, in a circumferential direction (XX?) of the tire, among circumferential grooves (3) and, in an axial direction (YY?) of the tire, transverse sipes (4) and transverse grooves (5), the cuts (3, 4, 5) delimiting elements in relief (6), each cut (3, 4, 5) being delimited by two faces facing one another and each face intersecting the tread surface (21) along an edge corner (311, 321; 411, 421; 511, 521).

Abstract: Disclosed herein is a kerf of a winter tire capable of easily discharging snow therefrom and further improving braking performance and drainage performance on a wet road. The kerf includes a kerf inlet portion formed in the shape of a sawtooth-type zigzag wave in a block of one of a tread and a shoulder of the tire in the circumferential direction of the tire, a pipe-shaped flow passage portion formed in a lower portion of the block and having a width that is greater than or equal to the width of the kerf inlet portion, and a connection channel for connecting the kerf inlet portion and the flow passage portion to each other. The sawtooth-type zigzag wave has an amplitude that gradually decreases in the depth direction of the block, and the connection channel has a width that gradually decreases from the kerf inlet portion to the flow passage portion.

Abstract: The present disclosure is directed to tire tread blocks each having a sipe and cut-out portions that reveal a three dimensional sipe pattern on interior walls of the tread block. More particularly, the sipe defines the interior walls of the tread block and divides the tread block into first and second portions. The sipe further defines the sipe pattern on the interior walls of the tread block, on the first and second portions. The cut-out portions are located on the first and second portions, and expose the sipe patterns on the second and first portions, respectively.

Abstract: Tire tread (1) made of elastomeric material, having a tread surface intended to come into contact with a road surface when the tire rolls. The tread includes a plurality of cuts opening onto the tread surface, each cut having a sipe (3) delimited by facing first walls (4), and a widening zone (5) delimited by second walls (6) widening the sipe in the depth of the tread, the roughness of the first walls (4) being different from the roughness of the second walls (6) of material.