Abstract: An information processing apparatus includes: a state detection unit configured to detect states of the liquids contained in the plurality of liquid tanks; a light emission unit attached to an external surface of the information processing apparatus with a cover closed, the cover being opened when the plurality of tanks are operated; and a control unit configured to control the light emission unit, based on a fact that the state of the liquid detected by the state detection unit is a predetermined state in one of the plurality of liquid tanks, so that the light emission unit emits light in a light emission pattern corresponding to the liquid tank that contains the liquid in the predetermined state, out of a plurality of light emission patterns corresponding to the plurality of liquid tanks.

Abstract: The liquid discharge device starts executing an initial process of discharging the liquid, based on determining that a low level signal is received after receiving a high level signal from an installation sensor and that a low level signal is received after receiving a high level signal from a liquid level sensor.

Abstract: In some examples, an apparatus can include a pawl including an anti-rotation surface and a spring, and a valve housing including a wedge, where the spring biases the pawl to a first position in response to the valve housing being at a closed position such that the wedge of the valve housing contacts the anti-rotation surface of the pawl to prevent rotation of the valve housing at the first position of the pawl.

Abstract: A recording apparatus includes a recording unit configured to apply a recording agent to a recording medium, the recording agent developing metallic luster when fixed to the recording medium, a conveyance unit configured to come into contact with the recording medium and convey the recording medium, after an image to be recorded on a side where the amount of the recording agent is smaller is recorded on a first side of the recording medium, an image to be recorded on a side where the amount of the recording agent is greater is recorded on a second side of the recording medium opposite from the first side.

Abstract: A thermal print head includes a substrate; a protrusion formed on an obverse surface of the substrate and extending in a main scanning direction; heat generating parts disposed on a top surface of the protrusion and arranged along the main scanning direction; and columnar heat storage members embedded in the protrusion and disposed in a given area having a width in a sub-scanning direction and being elongated in the main scanning direction. Each of the columnar heat storage members is elongated in a thickness direction of the substrate and has an upper end and a lower end, with the upper end being disposed at the same level of the top surface of the protrusion.

Abstract: A thermal transfer printing apparatus includes a storage to store a plurality of density adjustment parameters that are each associated with a corresponding one of a plurality of first-page calibration patterns and a plurality of second-page calibration patterns, a density adjustment processing part to adjust data on a color gradation value of a first-page superimposing portion and data on a gradation value of a second-page superimposing portion using their respective associated density adjustment parameters, and a printing part to make a print on recording paper to form a plurality of printed calibration patterns that include a printed superimposing portion where the first-page superimposing portion and the second-page superimposing portion are superimposed on each other based on data on color densities adjusted by the density adjustment processing part. A color density of the printed superimposing portion printed on the recording paper varies for each of the printed calibration patterns.

Abstract: In an editing device, a controller is configured to perform: editing; and displaying. The editing edits print data for a composite label to be created by affixing at least one overlay label to a base label. A printer is configured to perform a single printing operation using an ink ribbon to print an object on a tape in a single printing color thereby creating a single label. The editing includes: determining a printing color of an object; categorizing the object to one of a base object and an overlay object; and setting a print mode to one of a shortest length mode in which a single overlay label is created for each overlay object and a fewest prints mode in which a single overlay label is created for all overlay objects having a same printing color. The displaying displays a composite label image based on the print data.

Abstract: Provided is a tape printing apparatus including a recessed portion having an open first side, a mounting portion lid that opens and closes the recessed portion, a support target portion that extends from a bottom surface of the recessed portion to the first side, and a cantilever support portion that is provided on a second side of the support target portion opposite to the first side and supports the support target portion in a cantilever manner. The mounting portion lid is provided with a lid-side support portion that supports an end on the first side of the support target portion when the mounting portion lid is closed.

Abstract: An information processing apparatus performs: receiving a print instruction for repeatedly printing an object along a particular direction, the print instruction including an image length; determining whether the image length exceeds a particular length; in a case where the image length exceeds the particular length, creating print image data of a first image and a second image, the first and second images including the object arranged repeatedly, a length of the first image being within the particular length, the second image continuing from the first image, a total length of the first and second images being equal to the image length; in a case where the image length does not exceed the particular length, creating print image data of a third image in which the object is arranged repeatedly, a length of the third image being equal to the image length; and outputting the print image data to a printer.

Abstract: Provided is an ink jet printer including an electromagnetic wave generator that includes an electromagnetic wave generation section, a high-frequency voltage generation section, a transmission line, an ink jet head, and a control section. The electromagnetic wave generation section includes a first electrode, a second electrode, a first coil coupled to the first electrode or the second electrode in series, an impedance matching circuit constituted by a second coil and a capacitor coupled between the first coil and the high-frequency source. A thin ink film discharged from the ink jet head and attached to the recording medium is heated and dried by the electromagnetic wave generator. The control section controls a constant of the second coil or a constant of the capacitor of the impedance matching circuit according to information on the thin ink film.

Abstract: A drying device includes a storage unit in which energy (e.g. thermal energy) may be stored during a charging phase. The stored energy may be used at the beginning of a subsequent printing phase to warm a drying medium (e.g. air) to dry a recording medium that has been printed to. The maximum required connected electrical load of the drying device is advantageously and efficiently reduced.

Abstract: A tape cassette that includes a tape cassette that includes a housing having a top surface, a bottom surface, a rear wall, a front wall, and a tape feed exit located on the front wall, a tape included at least partially within the housing and configured to be fed along a tape feed path extending to the tape feed exit, and a first indicator aperture positioned on the front wall and a second indicator aperture position on a rear portion of the bottom surface. A position of the first indicator aperture on the front wall indicates a type of the tape included within the housing. A position of the second indicator aperture indicates a color of characters.

Abstract: A base material processing apparatus includes a transport mechanism, a mark detector, and a calculating unit. The transport mechanism transports an elongated strip-shaped base material in a longitudinal direction thereof along a predetermined transport path. The mark detector acquires a detection result by detecting a mark continuously at a detecting position on the transport path. The mark is applied previously to an end of the base material in a width direction thereof. The calculating unit calculates a transport speed of the base material, the amount of positional deviation of the base material in a transport direction, and tension on the base material applied in the transport direction on the basis of the detection result and information about the mark applied previously to the base material.

Abstract: A cutter unit includes a cutter holder, a cradle, a cutter lever, a cradle lever, and a transmitting portion. The cradle faces the cutter holder and movable between a full-cut position and a half-cut position. The cutter lever is configured to be contactable with the cutter holder. The cradle lever is configured to be contactable with the cradle. The transmitting portion is configured to move the cutter lever and the cradle lever in interlocking relation therebetween. The transmitting portion is configured to shut off transmission of movement of the cutter lever to the cradle lever in accordance with only operation to the cutter lever out of the cutter lever and the cradle lever while the transmitting portion is configured to transmit movement of the cradle lever to the cutter lever in accordance with only operation to the cradle lever out of the cutter lever and the cradle lever.

Abstract: Provided is a tape cutter including a full-receiving portion having a full-receiving blade and a positioning hole, and a full-movable portion having a full-movable blade and a positioning pin, and that comes into contact with or separates from the full-receiving portion. The full-receiving blade and the full-movable blade overlap and rub against each other to cut a tape, and when the full-movable portion moves toward the full-receiving portion, the positioning hole and the positioning pin are engaged with each other, so that the full-receiving blade is positioned with respect to the full-movable blade in a direction in which the full-receiving blade and the full-movable blade overlap.

Abstract: Provided is a tape cutter including a full-receiving portion, a full-movable portion that comes into contact with or separates from the full-receiving portion, a full-pressing portion that presses the full-movable portion, and a full second lever portion to which the full-pressing portion is fixed. The full-pressing portion has a full first pressing portion that presses a full first pressing target portion of the full-movable portion toward the full-receiving portion so that the full-movable portion approaches the full-receiving portion, and a full second pressing portion that engages with a full second pressing target portion of the full-movable portion and pulls the full second pressing target portion toward a side opposite to the full-receiving portion so that the full-movable portion separates from the full-receiving portion, and the full first pressing portion and the full second pressing portion are overlapping with the full second lever portion in a feed direction of the tape.

Abstract: A printing management apparatus includes a memory; and a processor that is connected to the memory, in which, in a case where a printing apparatus, which performs printing on continuous form paper, processes plural jobs with respect to the continuous form paper in one-time printing, the processor calculates a length, which is acquired by excluding a part used to print the plural jobs from a length determined by a transport start spot, at which transport of the continuous form paper starts and a transport end spot at which the transport of the continuous form paper ends, as an amount of waste paper indicative of a part which becomes a loss of the continuous form paper, and outputs an amount of waste paper for each job of plurality of jobs, which is acquired by allocating the calculated amount of waste paper to the plural jobs.

Abstract: A printing device is configured to perform a plurality of print cycles including a plurality of conveying periods and a plurality of printing periods. An N-th print cycle includes: selecting m number of conveying periods from among the plurality of conveying periods; setting one or more valid conveying periods; obtaining a first time duration by dividing a time duration corresponding to the m number of conveying periods into a plurality of time segments; adjusting a time duration of each of the one or more valid conveying periods using the first time duration; outputting a pulse in each of the one or more valid conveying periods to convey the printing medium in response to a motor being driven to rotate upon receipt of the pulse; and printing a portion of an object on the printing medium in each of the plurality of the printing periods.

Abstract: A liquid droplet discharging apparatus includes a transfer device, a discharging head, a first medium supply, a second medium supply and an imaging device. The transfer device is configured to transfer a work along a transfer direction. The discharging head is configured to discharge a liquid droplet of a functional liquid to the work. The first medium supply is configured to supply a first inspection medium, which receives the liquid droplet, in a direction orthogonal to the transfer direction. The second medium supply is configured to supply a second inspection medium, which receives the liquid droplet and is arranged side by side with respect to the first inspection medium in the transfer direction, in the direction orthogonal to the transfer direction. The imaging device is configured to image the liquid droplet discharged to the first inspection medium and the liquid droplet discharged to the second inspection medium.

Abstract: A medium processing apparatus includes a printer, a supporting member having a sheet-like shape and configured to support a discharged medium, and a winding unit configured to wind the supporting member and move with respect to the printer. The winding unit has a first case and a second case that rotatably support a winding shaft, and a placement portion placed at a flat surface. The first case and the second case in a state where axis lines of respective bearing portions that support the winding shaft are aligned with each other and in a state of being held so as to be mutually non-rotatable in a plane orthogonal to an axis line of the winding shaft, and when the winding unit is installed on a flat surface, the placement portion contacts the flat surface.

Abstract: A tape cassette includes: a tape roll which is a roll of a tape wound about an axis extending in a first direction; and a nipping member configured to nip the tape conveyed in a second direction in cooperation with a conveying roller of a printing device. The nipping member includes: a first region configured to face one end portion of the tape; a second region configured to face another end portion of the tape; and a third region positioned between the first region and the second region. The first region and an imaginary reference surface provide a first length in a third direction. The second region and the imaginary reference surface provide a second length in the third direction. The third region and the imaginary reference surface provide a third length in the third direction. The third length is greater than the first length and the second length.

Abstract: A tape cassette that includes a box-shaped cassette case whose outline being defined by a bottom wall, a top wall, and a side wall and including a plurality of corner portions, at least one tape contained within a tape containment area defined within the outline, a pair of cavities extending from the bottom wall and being provided between the tape containment area and the outline at opposite ends of a diagonal line connecting one of the corner portions to another of the corner portions, and a side face indicator portion provided in the side wall, indicating a type of the tape, and including a plurality of indicator portions disposed in a pattern in accordance with the type of the tape, each of the indicator portions being one of a switch hole and a surface portion.

Abstract: An object printer is configured to generate a three-dimensional map of a surface of an object to be printed and determine which areas in the three-dimensional map can be printed by a printhead movable in three-dimensional space. Areas can be printed when the printhead is positioned opposite an area where no inkjet in the printhead is closer than a minimum distance for accurate ink drop placement and all of the features in the area are within a maximum distance for accurate ink drop placement from the printhead. The areas that cannot be printed are deleted from the map and the map is displayed so a user can select where an ink image is to be formed on the object. The printer then operates an articulated arm to move the printhead opposite the surface at positions corresponding the selected area and operates the printhead to form the ink image.

Abstract: A printing apparatus includes: a head portion that discharges droplets toward a printing medium while reciprocating on the printing medium; and a controller that controls movement of the head portion during a printing operation such that a movement stop time of the head portion when a movement direction of the head portion is reversed at an endmost portion of a range in which the head portion moves is longer than the movement stop time of the head portion when the movement direction of the head portion is reversed on the printing medium.

Abstract: Provided herein is a printer comprising a printing assembly. The printing assembly comprises a printhead bracket fixedly attached to the printer, a printhead that defines a groove, the printhead aligned at a first alignment, an alignment adjuster fastened between the printhead bracket and the printhead, and a plurality of fasteners operatively engaged with the alignment adjuster. The alignment adjuster comprises a gear rack that is adjacent to the printhead bracket, and a protrusion that is received by the groove of the printhead. The plurality of fasteners comprises at least one selected from a group of a lateral adjustment fastener operatively engaged with the gear rack, and a rotational adjustment fastener operatively engaged with a transverse edge of the printhead. The lateral adjustment fastener is configured to provide lateral movement to the alignment adjuster and the printhead. The rotational adjustment fastener is configured to provide rotational movement to the printhead.

Abstract: A head pressurizing mechanism in which in a state in which a first tape cartridge is mounted, a first contact pin is positioned at a first switching position in which the first contact pin comes in contact with a pressure receiving portion provided on a side of a thermal head opposite a platen roller, and in a state in which the second tape cartridge is mounted, by pushing the pressurizing position switching portion in a mounting direction with the second tape cartridge, a second contact pin is positioned at a second switching position in which the second contact pin comes in contact with the pressure receiving portion at, with respect to the first switching position, a portion in a direction opposite the mounting direction.

Abstract: A printing apparatus includes one or more memories, and one or more processors that execute a set of instructions to transmit information for identifying print data to a different printing apparatus, receive a print request including print data, store the print data included in the received print request in the memories, and print print data, wherein, in a case where the received print request is a print request transmitted from the different printing apparatus, the print data included in the received print request is printed without being stored in the memories.

Abstract: A cassette includes: a tape having a first surface and a second surface opposite each other; an ejecting portion for discharging the tape in a conveying direction; and a guide provided at the ejecting portion. The tape has a thickness in a first direction defined as a direction from the first surface to the second surface. The guide includes a first region in contact with the first surface of the tape at the guide, and second and third regions in contact with the second surface of the tape at the guide. The first region is positioned between the second region and the third region in a widthwise direction of the tape perpendicular to the first direction. The first region is positioned further in the first direction of the tape at the guide relative to the second region and the third region.

Abstract: A cassette includes: a tape roll rotatable about an axis extending in a first direction; a tape conveying passage; and first and second guides positioned at the tape conveying passage. The tape roll is a roll of a tape. The tape is conveyed in a second direction perpendicular to the first direction along the tape conveying passage. The first guide and the second guide are configured to guide widthwise edges of the tape in the first direction. The first guide has a first end surface and the second guide has a second end surface facing the first end surface in the first direction. The first end surface and the second end surface provide a distance therebetween in the first direction smaller than a widthwise length of the tape in the first direction.

Abstract: The present invention relates to a method for applying an image onto a recording medium, using an aqueous ink jet coating, wherein the aqueous ink jet coating comprises a cationic polymer and an anionic surfactant. The present invention further relates to a method for preparing such aqueous ink jet coating composition.

Abstract: A printing system is disclosed for thermal transfer printing onto a surface of a substrate. The system comprises a transfer member having opposite front and rear sides with an imaging surface on the front side, a coating station at which a monolayer of particles made of, or coated with, a thermoplastic polymer is applied to the imaging surface, an imaging station at which energy is applied by a thermal print head via the rear side of the transfer member to selected regions of the imaging surface to render particles coating the selected regions tacky, and a transfer station at which the imaging surface of the transfer member and the substrate surface are pressed against each other to cause transfer to the surface of the substrate of the particles that have been rendered tacky.

Abstract: Provided is a thermosensitive recording medium, which is excellent in color developing property, especially excellent in bar code readability, under severe environment, further, excellent in resistance to discoloration under severe environment. That is a thermosensitive recording medium having a thermosensitive recording layer comprising a colorless or pale colored electron donating leuco dye and an electron accepting color developing agent on a substrate, wherein the thermosensitive recording layer comprises, as the electron accepting color developing agent, a specific sulfone compound and a phenolic compound in a specific ratio, wherein the phenolic compound contains two or more hydroxyl groups and two or more diphenylsulfone backbone but contains neither urethane bond nor urea bond. The thermosensitive recording layer optionally may further comprise a specific urea-urethane-based compound.

Abstract: Provided is an electromagnetic wave generator including: an electromagnetic wave generation section that generates an electromagnetic wave; a high-frequency voltage generation section that generates a voltage applied to the electromagnetic wave generation section; and a transmission line that electrically couples the electromagnetic wave generation section and the high-frequency voltage generation section to each other, in which the electromagnetic wave generation section includes a first electrode, a second electrode, a first conductor that electrically couples the first electrode and the transmission line to each other, and a second conductor that electrically couples the second electrode and the transmission line to each other, one of the first electrode or the second electrode is a reference potential electrode to which a reference potential is applied and the other is a high-frequency electrode to which a high-frequency voltage is applied, a minimum separation distance between the first electrode and the

Abstract: A printing plate for monotype prints includes a viscoelastic gel composition having a viscoelastic polymer selected from a hydrogenated poly-isoprene/butadiene polymer, poly(styrene-butadiene-styrene), poly(styrene-butadiene)n, poly(styrene-isoprene-styrene), poly(styrene-isoprene)n, poly(styrene-ethylene-propylene), poly(styrene-ethylene-propylene-styrene)n, poly(styrene-ethylene-butylene-styrene)n, poly(styrene-ethylene-butylene), poly(styrene-ethylene-propylene)n, poly(styrene- ethylene-butylene)n, polystyrene, polybutylene, poly(ethylene-propylene), poly(ethylene-butylene), polypropylene, polyethylene, polyurethane and silicone, and a combination thereof, and a plasticizing oil. The viscoelastic gel composition has a smooth surface and is formed as a sheet and shaped for use as a printing plate. A method for using the elastomeric gel printing plates of the present invention is also provided.

Abstract: A continuous maze book device provides a maze having continuity through a series of pages. The pages have maze indicia displayed thereon in a sequential order. The pages include a starting page, a medial page, and an ending page. The maze indicia includes a start point and a starting page exit along a continuous starting page path. The maze indicia includes a medial page entry positioned corresponding to the starting page exit and a medial page exit. The maze indicia includes an ending page entry corresponding to the medial page exit. The maze indicia on the ending page includes an end point.

Abstract: A calendar has one or more individual pages of the calendar that include portions of the pages that are omitted, removed or removable in order to enable aligned portions of other pages of the calendar to be viewed through the removed portions. The removed portions can be fonned as apertures in the page and/or as removed portions of one or more edges of the page, among others to allow the stacked pages to form a coordinated, and optionally customizable, decorative appearance for the calendar.

Abstract: Security document and method of manufacturing thereof. The security document having at least one bio data page and at least one paper data page stitched together, and at least one cover sheet placed outside the bio data page and the paper data pages, said cover sheet having at least one end paper sheet stitched with the stitched pages and one cover material sheet attached to the end paper sheet. The inside of the cover sheet is kiss cut in order to prevent any splitting of the cover sheet.

Abstract: A method and system for automatically verifying the authenticity of documents is provided. The method has: scanning a document to be verified in the visible and ultraviolet light spectrum; detecting in the scanned document digital watermarks printed with visible and ultraviolet ink; decrypting the marks, thereby obtaining an ultraviolet mark identifier and a variable data mark identifier; validating the percentage of the mark by checking for the presence of the digital watermark in different areas of the scanned document; comparing the mark identifiers obtained with mark identifiers stored in a database; and determining the validity of the document on the basis of the comparison. The invention allows the validity of the data printed in the document to be checked automatically, reducing the possibility of the undetected falsification, modification or total or partial alteration of a document.

Abstract: The present disclosure proposes a method for producing a structured wear protection film. The method comprises the steps: providing a wear protection base film, applying a formable lacquer-containing cover layer onto at least a partial area of the wear protection base film, at least partial structuring the lacquer-containing cover layer by use of a digital printing process in order to produce a structure of the lacquer-containing cover layer and at least partially hardening the lacquer-containing cover layer. Moreover, a structured wear protection film, the use of a structured wear protection film and a decorative panel comprising a structured wear protection film are proposed.

Abstract: A device for stretching a canvas mounted to a frame comprises a spacer and a screw. The frame has a plurality of side members each mutually abutting at angled ends. A first portion of the spacer includes a central aperture therethrough and two opposing ends or sides. Each end of the first portion is sized to engage a contact surface of each side member. The screw has a threaded shaft adapted for rotational engagement with the central aperture of the first portion of the spacer. The threaded shaft terminates at a first end thereof with a screw head that has a frustoconical side wall and an end surface that includes a tool-engaging recess. Rotating the screw to move the screw head closer to the spacer causes the spacer to push the side members mutually away from each other to stretch the canvas.

Abstract: The invention relates to a material for facing of buildings and premises. The technical result of the proposed invention is expanding the arsenal of technical tools that allow you to apply images with stereoscopic and dynamic display.

Abstract: A thermally induced revealing decorative device has a non-opaque, or partially non-opaque, container with a matrix at least partially filling the container. A warming mechanism is used to heat this matrix, which has thermochromic properties, such that when sufficiently warmed it becomes transparent or translucent. At least one decorative item is located within, and completely encompassed by the matrix. When the matrix is cooled, it is opaque and the decorative item is hidden, but when the matrix is heated such that it becomes transparent/translucent, the decorative item is revealed.

Abstract: An aerodynamically optimized drag-reduction appartus and method for optimal minimization of the drag-induced resistive forces upon a terrestrial vehicle, where the drag-induced resistive moments on wheel surfaces pivoting about the stationary point of ground contact are reduced, and the vehicle propulsive forces needed to countervail the resistive forces on the wheel are reduced.

Abstract: A lightweight wheel is provided, which includes a flange, a plurality of titanium alloy spokes and a carbon fiber rim, herein the flange is positioned at a middle part of the carbon fiber rim, the plurality of titanium alloy spokes are connected between the flange and the carbon fiber rim, and the plurality of titanium alloy spokes are uniformly distributed in pairs along the circumference; and one end of each of the titanium alloy spokes combined in pairs is fixed on the flange in a centralized mode, and another end is fixed separately at the carbon fiber rim, making the titanium alloy spokes combined in pairs a fan shape. An automobile is also provided.

Abstract: A shaped preform component (200) for a face portion (104) of a composite wheel (100), the shaped preform (200) having a hub (206) that extends around a central axis (Y), the shaped preform component (200) being formed from a cured composite fibre material having a compressibility of <2% volumetric under moulding conditions of 50 bar hydrostatic pressure and a temperature of 60 to 200° C.

Abstract: A rim portion of a composite wheel comprises a shaped annulus formed about a central axis of rotation of the composite wheel and having a circumferential axis extending circumferentially about the central axis and around the rim portion, said rim portion having a fibre layup comprising a stacked laminate formed from alternating layers of: a hoop tow layer comprising elongate fibre tow in which the fibres are substantially aligned with the circumferential axis of the rim portion, the hoop tow layer being formed from at least one annularly wound elongate fibre tow; and a bias ply layer comprising at least one fibre ply in which the fibres are substantially orientated at an angle of +? or ?? to the circumferential axis of the rim portion, wherein ? is from 26° to 40°.

Abstract: A composite wheel includes a rim, a connecting ring, a plurality of spokes and a flange all connected in sequence from the outside to the inside. One end of each spoke is provided with a thread, and the other end of each spoke is provided with a first mounting hole.

Abstract: A shaped preform component (200A) for a spoke portion (108A) of a composite wheel (100), the shaped preform (200A) comprising: an elongate body (215) configured to be located in a spoke (108) of a composite wheel (100), wherein the shaped preform component (200A) is formed from a cured composite fibre material having a compressibility of <2% volumetric under moulding conditions of 50 bar hydrostatic pressure and a temperature of 60 to 150° C., and wherein the density of the cured composite fibre material is selected to form a counterbalance mass for a mass addition (300) to the composite wheel (100).

Abstract: An eccentric omnidirectional wheel, having a fixed wheel frame having a hollow center, a driving ring, a driving mechanism and at least one slanted rollable barrel evenly distributed around an outer perimeter of the driving ring; the driving ring sleeves onto an outer perimeter of the fixed wheel frame and is rotatably connected with the fixed wheel frame; an eccentric shaft seat is mounted at an inner perimeter of the fixed wheel frame; the driving mechanism is connected with the driving ring to achieve motion transmission.

Abstract: Disclosed in the present disclosure is a wheel locating surface correction device, comprising a frame, a correction ring and a correction plate. The correction plate is provided above a wheel blank. The structure can correct the roundness of the radial positioning surface of the blank, and the flatness of the axial positioning surface of the blank before machining to improve the roundness of the blank rim, improving the wheel yield and the processing quality.