embroidery system

Abstract

To express height on an embroidery formed.SOLUTION: An embroidery system has an embroidery data creation part to create an embroidery data, an embroidery formation part to form the embroidery on an article to be embroidered, a recording head to discharge droplets from a nozzle, and a control part to control operation of the recording head. The embroidery data creation part has a data reading part to read an original data, and a processing part to create the embroidery data using a height information of an object included in the original data. The processing part sets an embroidery density based on the height information, defines application quantity as a first application quantity when the embroidery density is a first density, and defines the application quantity as a second application quantity larger than the first application quantity when the embroidery density is a second density higher than the first density. The control part controls the operation of the recording head so as to adjust the application quantity of the droplet applied on a yarn based on the embroidery data.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to an embroidery system. [Background technology]

[0002] There has been known an embroidery data creation device that creates embroidery data for forming embroidery using an embroidery machine (see, for example, Patent Document 1). This embroidery data creation device includes a three-dimensional information input unit that inputs three-dimensional information, and a needle drop point information setting means that sets needle drop point information in an embroidery target area formed by the input three-dimensional information. Summary of the Invention [Problem to be solved by the invention]

[0003] However, in the embroidery data creation device described in Patent Document 1, even if embroidery is formed based on the embroidery data, the height of the formed embroidery is not expressed.

[0004] An object of the present invention is to provide an embroidery system that is capable of expressing height in embroidery that is formed when embroidery is formed based on embroidery data. [Means for solving the problem]

[0005] An embroidery system according to one embodiment includes an embroidery data creation unit that creates embroidery data for forming embroidery, an embroidery forming unit that forms embroidery on an object based on the embroidery data created by the embroidery data creation unit, a recording head that ejects droplets from nozzles, and a control unit that controls the operation of the recording head. Three-dimensional image A data reading section that reads data and 3D Process the data and 3D Included in the data The source of the imageThe embroidery data includes a processing unit that creates embroidery data using height information of the object, and the embroidery data includes data regarding embroidery density, which is the density of the thread in the embroidery, and data regarding the amount of droplets applied to the thread in the embroidery. The processing unit sets the embroidery density based on the height information, and when the embroidery density is a first density, sets the amount of droplets applied to the thread to a first application amount, and when the embroidery density is a second density higher than the first density, sets the amount of droplets applied to the thread to a second application amount higher than the first application amount. The control unit controls the operation of the recording head to adjust the amount of droplets applied to the thread based on the embroidery data. [Effects of the Invention]

[0006] According to an embodiment of the embroidery system, when embroidery is formed based on embroidery data, height can be expressed in the formed embroidery. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a schematic diagram illustrating an embroidery system according to one embodiment. [Figure 2] FIG. 2 is a schematic diagram illustrating a liquid application unit of the liquid ejection device. [Figure 3] FIG. 4 is a bottom view showing a plurality of liquid ejection heads of the liquid application unit. [Figure 4] FIG. 1 is a block diagram illustrating a liquid ejection device. [Figure 5] FIG. 1 is a block diagram illustrating an embroidery system. [Figure 6] 1 is a schematic diagram showing an example of data included in three-dimensional information of a model M that is the basis for embroidery. FIG. [Figure 7] 1 is a cross-sectional view showing a cross section along the height direction of a model M that is the basis for embroidery. [Figure 8] FIG. 10 is a cross-sectional view showing an example of thread density in embroidery. [Figure 9] 10 is a flowchart showing the procedure of an embroidery data creation method. DETAILED DESCRIPTION OF THE INVENTION

[0008] An embroidery system according to an embodiment of the present invention will be described below with reference to the drawings.

[0009] <Embroidery system> FIG. 1 is a schematic diagram showing an embroidery system according to one embodiment. The embroidery system 300 shown in FIG. 1 includes a liquid ejection device 100. The liquid ejection device 100 may be an inline embroidery device. The liquid ejection device 100 includes a supply reel 102, a liquid application unit 103, a fixing unit 104, a post-processing unit 105, and an embroidery head 106. A thread 101 is wound around the supply reel 102. The thread 101 is a member to which the liquid is applied. The embroidery head 106 is an example of an embroidery forming unit. The embroidery system 300 includes a dyeing unit 150 and an embroidery unit 160. The dyeing unit 150 includes the liquid application unit 103, the fixing unit 104, and the post-processing unit 105. The embroidery unit 160 includes the embroidery head 106.

[0010] The liquid discharge device 100 has a plurality of rollers 108, 109 that guide the thread 101 pulled out from the supply reel 102. The thread 101 pulled out from the supply reel 102 comes into contact with the outer circumferential surfaces of the rollers 108, 109 and is guided to the embroidery head 106. The thread 101 is continuously pulled from the supply reel 102 to the embroidery head 106.

[0011] 2 is a schematic diagram showing a liquid deposition section of a liquid ejection device. The liquid deposition section 103 has multiple liquid ejection heads 1 (1a to 1d) and a maintenance unit 2. The multiple liquid ejection heads 1 eject liquids of required colors onto a thread 101. The liquid ejection heads 1a to 1d eject liquids of colors such as cyan (C), magenta (M), yellow (Y), and black (K). The liquid ejection head 1 is an example of a recording head.

[0012] The maintenance unit 2 includes a plurality of individual maintenance units 20 (20a to 20d). The plurality of individual maintenance units 20 perform maintenance of each liquid ejection head 1. The individual maintenance units 20 perform maintenance operations to suppress ejection failure, deflected ejection, changes in ejection speed, and changes in ejection amount caused by clogging of the liquid ejection head 1 and increased ink viscosity, and to maintain or restore the ejection state. The individual maintenance units 20 may perform cleaning operations such as purging, blank ejection, flushing, and wiping.

[0013] 3 is a bottom view showing multiple liquid ejection heads of a liquid application unit. As shown in FIG. 3, the liquid ejection head 1 has multiple nozzles 11 that eject liquid. The liquid ejection head 1 has a nozzle surface 12 in which the multiple nozzles 11 are formed. The multiple nozzles 11 lined up in the transport direction of the yarn 101 constitute a nozzle row 10. The multiple liquid ejection heads 1 are lined up in the transport direction of the yarn 101.

[0014] As shown in FIG. 1, fixing section 104 is disposed after liquid application section 103 in the conveying direction of yarn 101. Yarn 101 to which liquid has been applied in liquid application section 103 is introduced into fixing section 104. Fixing section 104 performs a fixing process (drying process) on yarn 101 to which liquid has been applied. Fixing section 104 includes a heating section that heats yarn 101. The heating section may be, for example, an infrared irradiation section or a hot air blowing section. Fixing section 104 heats and dries yarn 101.

[0015] The post-processing unit 105 is disposed after the fixing unit 104 in the conveying direction of the yarn 101. The post-processing unit 105 may include, for example, a cleaning unit, a tension adjusting unit, a feed amount detecting unit, and a lubricant applying unit. The cleaning unit cleans the yarn 101. The tension adjusting unit adjusts the tension of the yarn 101. The feed amount detecting unit detects the movement amount of the yarn 101. The lubricant applying unit applies a lubricant to the surface of the yarn 101.

[0016] The embroidery head 106 sews thread 101 onto the fabric to form embroidery. The fabric is an example of an object. The object is not limited to fabric, and may be a sheet-like object such as paper or leather.

[0017] The liquid ejection device 100 is not limited to embroidery devices, but can also be applied to devices that use linear members such as threads, such as looms and sewing machines.

[0018] Furthermore, "thread" refers to glass fiber thread, wool thread, cotton thread, synthetic thread, metal thread, mixed thread of wool, cotton, polymer, or metal, yarn, filament, or linear member (continuous substrate) to which a liquid can be applied, and also includes braided cord, flat cord, etc.

[0019] <Drive waveform application section> Fig. 4 is a block diagram showing a liquid ejection device. As shown in Fig. 4, the plurality of liquid ejection heads 1 have a plurality of piezoelectric elements 13. The plurality of liquid ejection heads 1 also have pressure chambers that communicate with the nozzles 11. The piezoelectric elements 13 apply pressure to the liquid in the pressure chambers, causing the ink in the pressure chambers to be ejected from the nozzles 11.

[0020] The liquid ejection device 100 includes a drive waveform application section 400. The drive waveform application section 400 applies a drive waveform to the liquid ejection head 1. The drive waveform application section 400 includes a head control section 401, a drive waveform generation section 402, a waveform data storage section 403, a head driver 410, and an ejection timing generation section 404. The ejection timing generation section 404 generates an ejection timing pulse stb that indicates the ejection timing.

[0021] When the head control unit 401 receives the ejection timing pulse stb, it outputs an ejection synchronization signal LINE, which serves as a trigger for generating a drive waveform, to the drive waveform generation unit 402. In addition, the head control unit 401 outputs an ejection timing signal CHA, which corresponds to the amount of delay from the ejection synchronization signal LINE. The NGE is output to the drive waveform generating unit 402.

[0022] The drive waveform generating unit 402 generates a common drive waveform signal Vcom at a timing based on the ejection synchronization signal LINE and the ejection timing signal CHANGE.

[0023] The head control unit 401 receives image data and, based on this image data, generates a mask control signal MN for selecting a predetermined waveform of the common drive waveform signal Vcom according to the size of the liquid to be ejected from each nozzle 11 of the liquid ejection head 1. The mask control signal MN is a signal whose timing is synchronized with the ejection timing signal CHANGE.

[0024] The head control unit 401 transfers the image data SD, the synchronous clock signal SCK, the latch signal LT that commands the latching of the image data, and the generated mask control signal MN to the head driver 410.

[0025] The head driver 410 includes a shift register 411 , a latch circuit 412 , a gradation decoder 413 , a level shifter 414 , and an analog switch array 415 .

[0026] The shift register 411 receives the image data SD and the synchronous clock signal SCK transferred from the head control unit 401. The latch circuit 412 latches each register value of the shift register 411 in response to a latch signal LT transferred from the head control unit 401.

[0027] The gradation decoder 413 decodes the value (image data SD) latched by the latch circuit 412 and the mask control signal MN, and outputs the result. The level shifter 414 converts the logic level voltage signal of the gradation decoder 413 into a level at which the analog switch AS of the analog switch array 415 can operate.

[0028] The analog switch AS of the analog switch array 415 is a switch that is turned on / off by the output of the gradation decoder 413 provided via the level shifter 414. This analog switch AS is provided for each nozzle 11 of the liquid ejection head 1, and is connected to an individual electrode of the piezoelectric element 13 corresponding to each nozzle 11. In addition, a common drive waveform signal Vcom is input to the analog switch AS from the drive waveform generation unit 402. Also, as described above, the timing of the mask control signal MN is synchronized with the timing of the common drive waveform signal Vcom.

[0029] Therefore, the analog switch AS is turned on / off at an appropriate timing in accordance with the output of the gradation decoder 413 provided via the level shifter 414, thereby selecting a waveform to be applied to the piezoelectric element 13 corresponding to each nozzle 11 from the drive waveforms constituting the common drive waveform signal Vcom, thereby controlling the size of the droplets ejected from the nozzles.

[0030] The discharge timing generation unit 404 generates and outputs a discharge timing pulse stb each time the yarn 101 is moved by a predetermined amount based on the detection result of a rotary encoder 405 that detects the amount of rotation of the roller 109 in Fig. 1. The rotary encoder 405 is composed of an encoder wheel 405a that rotates together with the roller 109, and an encoder sensor 405b that reads the slits in the encoder wheel 405a.

[0031] The thread 101 is transported (moved) by being consumed in the embroidery operation by the downstream embroidery head 106. As the thread 101 is transported, the roller 109 guiding the thread 101 rotates, which in turn rotates the encoder wheel 405a of the rotary encoder 405, causing the encoder sensor 405b to generate and output an encoder pulse proportional to the linear velocity of the thread 101.

[0032] An ejection timing pulse stb is generated by the ejection timing generation unit 404 based on the encoder pulse from this rotary encoder 405, and is used as the ejection timing of the liquid ejection head 1. Liquid is applied to the yarn 101 from the start of the yarn 101 movement, and even if the linear speed of the yarn 101 changes, the interval between the ejection timing pulses stb changes according to the encoder pulse, preventing deviation of the landing position of the droplets.

[0033] <Embroidery Data Creation Department> Next, the embroidery data creation unit will be described with reference to Fig. 5. As shown in Fig. 5, the embroidery system 300 includes an embroidery data creation unit 200. The embroidery data creation unit 200 includes a data reading unit 210 and a processing unit 220. The embroidery data creation unit 200 creates embroidery data from original data that is the basis for embroidery. The embroidery data creation unit 200 outputs the created embroidery data to the liquid ejection device 100. Note that the liquid ejection device 100 may also include the embroidery data creation unit 200.

[0034] <Data reading section> The data reading unit 210 shown in Fig. 5 reads three-dimensional data of an object that is the source of embroidery. The data reading unit 210 may be, for example, a three-dimensional scanner. The data reading unit 210 may be, for example, a camera. The data reading unit 210 may include, for example, a storage unit that stores data. The data reading unit 210 can acquire original data.

[0035] <Original data> The original data is, for example, data relating to the object that will be the basis for the embroidery. The original data includes three-dimensional information about the object that will be the basis for the embroidery. The three-dimensional information (3D data) includes two-dimensional information (2D data) and height information. The original data may include image data (original image data) relating to a photograph of the object that will be the basis for the embroidery. The image data includes data relating to the color of the object that will be the basis for the embroidery. The image data may include information other than color.

[0036] <Three-dimensional information> The three-dimensional information includes, for example, information about positions in the X-axis direction, the Y-axis direction, and the Z-axis direction, which are orthogonal to each other.

[0037] <Two-dimensional information> The two-dimensional information includes data such as the position and shape of the object that will be the basis for embroidery, and includes information about the position in the X-axis direction and the Y-axis direction.

[0038] <Height information> The height information is information relating to the height of the object that will be the source of the embroidery. The height information may be information relating to the height of the object that will be the source of the embroidery from a reference position. The height information includes information about the position in the Z-axis direction. The height information may be information relating to the thickness of the object that will be the source of the embroidery.

[0039] FIG. 6 is a schematic diagram showing an example of data included in the three-dimensional information of the model M that will be the basis for the embroidery. FIG. 7 is a cross-sectional view showing a cross section along the height direction of the model M that will be the basis for the embroidery. The model M is an example of an object. FIG. 6 can be obtained by reading the model M that will be the basis for the embroidery using the data reading unit 210. The data shown in FIG. 6 includes two-dimensional information showing the shape of the model M and height information of regions R1 to R3 included in the model M.

[0040] The model M includes multiple regions R1 to R3. The model M is divided into multiple regions R1 to R3 based on height information. Region R1 is, for example, a circular portion in the center. Region R2 is an annular portion surrounding region R1. Region R3 is an annular portion surrounding region R2.

[0041] As shown in FIG. 7, the height H1 of region R1 is higher than the height H2 of region R2. The height H2 of region R2 is higher than the height H3 of region R3. The height information includes the heights H1 to H3 of regions R1 to R3. The height H1 of region R1 may be the highest height of region R1. The height H2 of region R2 may be the average height of region R2. The height H3 of region R3 may be the lowest height of region R3.

[0042] In Fig. 6, the height information is shown, for example, in shades of gray. The lower the value of the height information, the lighter the shade, and the darker the value of the height information. Region R1 is shown darker than regions R2 and R3. Region R2 is shown darker than region R3.

[0043] <Embroidery data> The embroidery data includes coordinates indicating the needle drop positions of the embroidery head 106 and data indicating the needle drop order. The embroidery data may be sequential data regarding the needle drop order. The embroidery data includes embroidery parameters such as thread density (embroidery density) and stitch direction. The embroidery data also includes data regarding the amount of droplets applied to the thread used for embroidery. The embroidery data may also include data regarding the stitch width. The stitch width may be set based on the height information.

[0044] The embroidery data is a combination of coordinate data to which the needle moves and operations to be performed at those coordinates, specifically including inserting the needle into the fabric, entangling it with the bobbin thread, returning the needle to the front side of the fabric, then moving the needle to the next position to insert the needle, cutting the thread to end the embroidery, and moving the needle to its initial position.

[0045] <Thread density> 8 is a cross-sectional view showing an example of thread density in embroidery. The density of the thread 101 may be, for example, the number of threads 101 in a predetermined area. The density of the thread 101 may be, for example, the thickness of the thread 101 in a predetermined area. The density of the thread 101 may be a value indicating whether it is larger or smaller than a reference value.

[0046] The density of the thread 101 can be changed according to the height information. For example, the thread density in the region R31 corresponding to the region R1 is, for example, thread density D1. The thread density in the region R32 corresponding to the region R2 is, for example, thread density D2. The thread density in the region R33 corresponding to the region R3 is, for example, thread density D3. Among the thread densities D1 to D3, the thread density D3 is highest, followed by the thread density D2 and finally the thread density D1.

[0047] The thread density D1 in the region R31 where the height information value is high is higher than the thread densities D2 and D3 in the regions R32 and R33 where the height information value is lower than the region R31. The thread density D3 in the region R33 where the height information value is low is lower than the thread densities D1 and D2 in the regions R31 and R32 where the height information value is higher than the region R33. The thread density values ​​are higher (D1>D2>D3) in the order of higher values ​​of the height information (H1>H2>H3).

[0048] <Processing section> The processing unit 220 acquires data from the data reading unit 210 and processes the data. The processing unit 220 may be, for example, an image processing unit. The processing unit 220 includes, for example, a CPU 221, a ROM 222, and a RAM 223. The processing unit 220 processes the data and creates embroidery data from the image data.

[0049] The processing unit 220 can determine embroidery parameters based on the height information included in the original data. The processing unit 220 reflects the embroidery parameters in the embroidery data.

[0050] When the height information included in the original data is high, the processing unit 220 can set the thread density higher compared to when the height information included in the original data is low. When the value of the height information indicates a first height, the processing unit 220 can set the thread density to a first density. When the value of the height information indicates a second height higher than the first height, the processing unit 220 can set the thread density to a second density higher than the first density. The higher the height information, the higher the thread density can be set. The lower the height information, the lower the thread density can be set.

[0051] 8, the thread density D1 in region R31, which has the highest height information value (height H1), is higher than the thread densities D2 and D3 in regions R32 and R33, which have height information values ​​(heights H2 and H3) lower than the value in region R31 (D1>D2>D3). The thread density D3 in region R33, which has the lowest height information value (height H3), is lower than the thread densities D1 and D2 in regions R31 and R32, which have height information values ​​(heights H1 and H2) higher than the value in region R33. In this way, the processing unit 220 can set the thread densities D1 to D3 according to the height information.

[0052] The processing unit 220 can set the amount of droplets to be applied to the yarn 101. When the density of the yarn 101 is a first density, the processing unit 220 can set the amount of droplets to be applied to a first application amount. When the density of the yarn 101 is a second density higher than the first density, the processing unit 220 can set the amount of droplets to be applied to a second application amount higher than the first application amount. The processing unit 220 can set the amount of droplets to be applied to a location where the density of the yarn 101 is higher, so that the amount of droplets is increased. The processing unit 220 can set the amount of droplets to be applied to a location where the density of the yarn 101 is lower, so that the amount of droplets is decreased.

[0053] The embroidery data creation unit 200 outputs the created embroidery data to the liquid ejection device 100. The liquid ejection head 1 can eject droplets according to the droplet application volume set in the embroidery data. The embroidery data includes data on the color of the droplets and data on the ejection volume.

[0054] <Embroidery head> The embroidery head 106 pierces the fabric 120 with the needle and entangles it with the bobbin thread. The embroidery head 106 then returns the needle to the front side of the fabric 120. The embroidery head 106 then moves the needle to the next position where it should be pierced. The embroidery head 106 can pierce the needle and adjust the spacing of the thread 101 so that the thread density set in the embroidery data is achieved.

[0055] <How to create embroidery data> Next, the procedure of the embroidery data creation method will be described with reference to Fig. 9. Fig. 9 is a flowchart showing the procedure of the embroidery data creation method. First, the data reading unit 210 imports an embroidery model (model M) that will be the basis for embroidery. The data reading unit 210 reads three-dimensional information of the embroidery model. As described above, the three-dimensional information includes two-dimensional information (2D data) and height information (height data).

[0056] 9, the processing unit 220 inputs two-dimensional information from the data reading unit 210 (step S21). The processing unit 220 extracts an area to be embroidered (step S22). The processing unit 220 can extract an area of ​​the object to be embroidered and an area of ​​the background other than the object from the two-dimensional information. The processing unit 220 can set the area of ​​the object to be embroidered as the area to be embroidered.

[0057] The processing unit 220 creates stitch data to fill the area to be embroidered (step S23). The stitch data includes, for example, stitch width, coordinates of needle insertion positions, and the like.

[0058] The processing unit 220 receives height information from the data reading unit 210 (step S24). The processing unit 220 divides the model M into regions R1 to R3 based on the height information (heights H1 to H3). The height information is associated with, for example, coordinate data, which is two-dimensional information. The processing unit 220 sets the thread density based on the height information (step S25). The processing unit 220 can increase the thread density as the height information value increases. The processing unit 220 sets thread densities D1 to D3 for each of the regions R1 to R3. The processing unit 220 creates embroidery data other than the thread density (step S26). The processing unit 220 may create embroidery data such that color information is set for each region. The processing unit 220 can create inkjet printing data from the color information and embroidery data. The processing unit 220 can output the embroidery data and printing data to the head control unit 401 of the liquid ejection device 100.

[0059] <Liquid ejection head operation control> The head control unit 401 controls the operation of the liquid ejection head 1 in accordance with the embroidery data (print data) so as to deposit liquid onto the thread 101. The head control unit 401 controls the operation of the liquid ejection head 1 in accordance with the stitch width W of the embroidery data so as to adjust the ejection amount of liquid ejected onto the thread 101.

[0060] The head control unit 401 can control the operation of the liquid ejection head 1 so that the higher the thread density, the greater the amount of liquid ejected. The head control unit 401 can control the operation of the liquid ejection head 1 so that the lower the thread density, the less the amount of liquid ejected.

[0061] The head control unit 401 can control the operation of the liquid ejection head 1 so as to adjust the amount of droplets applied to the thread based on the embroidery data. The head control unit 401 can control the operation of the liquid ejection head 1 so that when the thread density is a first density, the amount of droplets applied is a first amount, and when the thread density is a second density higher than the first density, the amount of droplets applied is a second amount higher than the first amount.

[0062] The head control unit 401 can control the operation of the liquid ejection head 1 so that the amount of droplets applied increases in areas where the thread density is higher. The head control unit 401 can control the operation of the liquid ejection head 1 so that the amount of droplets applied decreases in areas where the thread density is lower.

[0063] <Embroidery head operation control> The head control unit 401 controls the operation of the embroidery head 106 so as to create embroidery in accordance with the embroidery data.

[0064] <Effects of the embroidery system> According to the embroidery system 300 of this embodiment, the data reading unit 210 reads the original data, sets the thread density based on the height information of the object included in the original data, and when the thread density is a first density, sets the application amount of droplets to the thread to a first application amount, and when the thread density is a second density higher than the first density, sets the application amount of droplets to the thread to a second application amount higher than the first application amount. According to this embroidery system 300, the application amount of droplets can be set to be greater in areas with higher thread density. Furthermore, according to the embroidery system 300, the application amount of droplets can be set to be smaller in areas with lower thread density. When forming embroidery based on the embroidery data, the embroidery system 300 can represent height in the formed embroidery.

[0065] Furthermore, in the embroidery system 300, the processing unit 220 sets the thread density to a first density when the value of the height information indicates a first height, and sets the thread density to a second density higher than the first density when the value of the height information indicates a second height higher than the first height. As a result, the embroidery system 300 can increase the thread density and increase the amount of droplets applied to higher portions of the object to be embroidered. The embroidery system 300 can decrease the thread density and decrease the amount of droplets applied to lower portions of the object to be embroidered. As a result, by changing the thread density and the shade of the thread color based on the height information, differences in height can be accentuated in the formed embroidery. The embroidery system 300 can create embroidery with a more three-dimensional texture.

[0066] Furthermore, according to the embroidery system 300, the liquid ejection head 1 has a pressure chamber that applies pressure to the liquid droplets, and the liquid ejection device 100 can eject the pressurized liquid droplets from the nozzles 11 and attach them to the thread 101. By using the inkjet liquid ejection head 1 in this way, it is possible to eject ink with high precision and color the thread 101. The liquid ejection device 100 can create embroidery with color variations within a single surface area, such as a gradation effect. This can improve the range of embroidery designs and expressions.

[0067] Conventional embroidery generally uses a single-color thread that has been uniformly dyed in advance. Unlike conventional embroidery, the liquid ejection device 100 eliminates the need to change threads (needle) to change colors, allowing for greater freedom in needle placement. This allows for greater freedom in embroidery patterns. The liquid ejection device 100 can further improve the expressive power of embroidery based on photographic data with a wide range of colors.

[0068] The liquid ejection device 100 equipped with an inkjet type liquid ejection head 1 not only widens the range of colors but also improves the freedom of stitching, thereby improving the texture and three-dimensionality of the embroidery.

[0069] The present invention is not limited to the above-described embodiment, and various modifications are possible within the scope of the present invention without departing from or changing the technical concept of the present invention. [Explanation of symbols]

[0070] 1. Liquid ejection head (recording head) 11 nozzles 100 Liquid dispensing device 101 Thread 106 Embroidery head (embroidery forming part) 200 Embroidery Data Creation Department 210 Data reading unit 220 Processing section 401 Head control unit (control unit) [Prior art documents] [Patent documents]

[0071] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-14898

Claims

1. an embroidery data creation unit that creates embroidery data for forming embroidery; an embroidery forming unit that forms the embroidery on an object based on the embroidery data created by the embroidery data creating unit; a recording head that ejects droplets from nozzles; a control unit for controlling the operation of the recording head, The embroidery data creation unit includes a data reading unit that reads three-dimensional data of the embroidery pattern; a processing unit that processes the three-dimensional data read by the data reading unit and creates the embroidery data using height information of an object that is the basis of the pattern and that is included in the three-dimensional data, The embroidery data is Data on embroidery density, which is the density of threads in the embroidery; data relating to the amount of droplets applied to the threads in the embroidery; The processing unit setting the embroidery density based on the height information; When the embroidery density is a first density, the application amount of the droplets is set to a first application amount; When the embroidery density is a second density higher than the first density, the application amount of the droplets is set to a second application amount higher than the first application amount; The control unit controls the operation of the recording head so as to adjust the amount of the droplets applied to the thread based on the embroidery data.

2. The processing unit When the value of the height information indicates a first height, the embroidery density is set to the first density; 2. The embroidery system according to claim 1, wherein when the value of the height information indicates a second height that is higher than the first height, the embroidery density is set to the second density.

3. The recording head includes: a pressure chamber for applying pressure to the droplet; 3. The embroidery system according to claim 1, wherein the droplets to which pressure is applied are ejected from the nozzle and attached to the thread.

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