JP6958336B2 - Drawing system, drawing device and terminal device - Google Patents

Description

The present invention relates to a drawing system, a drawing device and a terminal device.

Conventionally, a drawing device for drawing a nail design on a fingernail, a nail tip, or the like has been known.
In such a device, high-precision drawing cannot be performed on the nail unless the shape of the nail to be drawn is accurately detected.
In particular, the nail to be drawn by such a drawing device has a curved shape in which the height becomes lower and the inclination becomes larger toward both ends in the width direction.
Therefore, if a design image is drawn on the nail without considering this curved shape, the design will be distorted and a beautiful finish will not be obtained.

In order to draw an image without distortion on the nail, it is necessary to perform curved surface correction on the drawing data so as to match the curved shape of the nail, but the degree of curvature in the curved shape of the nail varies from person to person.
For this reason, it is not possible to uniformly set a correction value for correction, and it is necessary to perform correction according to the degree of curvature of the curved shape of each user's nail.

Therefore, in order to know the curved shape of the nail, a camera that captures a finger image is provided in the drawing device, the surface of the nail is irradiated with light, and the reflected light is emitted from the normal direction of the nail region (direction of the nail surface). A technique has been proposed in which the curved shape of the nail to be photographed is obtained by photographing with a camera and examining the intensity of the brightness of the surface reflected light of the nail in the photographed image.

JP-A-2017-55933

However, when a camera is provided in the drawing device, the cost of the device increases accordingly, and the wiring in the device becomes complicated.
In addition, if the drawing device also performs image recognition of the image taken by the camera and generation of drawing data based on the recognition result, various resources (for example, memory and reference file) required for calculation processing are provided on the drawing device side. It is necessary to prepare storage for storage, etc.), which increases costs and complicates the equipment.
Therefore, it is conceivable to take a picture of a finger or a nail with a camera provided in the drawing device and send the image obtained by the taking to an external device to perform image recognition or generation of drawing data based on the recognition result. .. However, in this case, it is necessary to transfer control signals and image data between the external device and the drawing device, which takes time, and therefore it is difficult to perform a rapid drawing process.

On the other hand, it is conceivable that the drawing device is not provided with a camera and a sensor or the like for detecting whether or not the finger is set is provided. In this case, whether or not the finger is arranged at a predetermined fixed position. However, there is a problem that it is not possible to accurately detect the shape of the nail, especially the curved shape in the width direction, and it is not possible to draw precisely on the nail region. ..

The present invention has been made in view of the above circumstances, and is a drawing system capable of accurately detecting the curved shape of a nail with a simple and inexpensive configuration and capable of performing high-definition drawing on the nail. It is an advantage to provide a drawing device and a terminal device.

In order to solve the above problems, the drawing system of the present invention
The drawing part that draws on the nails and
It is removable to the main body of the device, and is configured so that the printing finger, which is a finger having a nail to be drawn by the drawing unit, can be fixed so that the nail is exposed from the toe side, and is attached to the outer end surface of the toe side. A fixing jig on which the first reference mark, which is a reference in the height direction of the nail, is installed, and
With a drawing device
With the shooting department
From the first image including the first reference mark and the nail taken by the photographing unit from the tip end side of the nail, the printing finger fixed to the fixing jig, the first reference mark. A detection processing unit that detects the position of the nail and the position of the upper surface of the nail, and detects the curved shape of the nail in the width direction of the nail based on the detection result.
A drawing data generation unit that generates drawing data with curved surface correction according to the curved shape of the nail in the nail width direction based on the detection result by the detection processing unit.
With a terminal device equipped with
It is characterized by having.

According to the present invention, it is possible to accurately detect the curved shape of the nail with a simple and inexpensive configuration, and it is possible to perform high-definition drawing on the nail.

It is a perspective view which shows the whole structure of the drawing system in this embodiment. It is a perspective view which shows the main part of the internal structure of the drawing apparatus in this embodiment. (A) is a perspective view of the fixing jig of the present embodiment viewed from diagonally above, and (b) is a perspective view of the fixing jig of the present embodiment viewed from diagonally below. It is a schematic diagram which looked at the fixing jig from the tip side of a claw. It is a top view which showed the appearance of arranging a fixing jig in a jig arrangement part. It is a top view which showed the state which the fixing jig was arranged at the predetermined position of the jig arrangement part. It is a main part block diagram which showed the control structure of the drawing system in this embodiment. 6 is a graph showing the curved shape of the nail shown in FIG. 5 by the width of the nail and the level in the height direction of the nail. It is a schematic plan view which shows the example which divided the surface of a nail into a region according to the level in the height direction of a nail. It is a flowchart which shows the drawing process of the drawing system which concerns on this embodiment.

An embodiment of a drawing system, a drawing device, and a terminal device according to the present invention will be described with reference to FIGS. 1 to 10.
Although various technically preferable limitations for carrying out the present invention are attached to the embodiments described below, the scope of the present invention is not limited to the following embodiments and illustrated examples.
Further, in the following embodiment, a nail printing device in which the drawing device draws on the fingernail of the hand as a drawing target will be described as an example, but the drawing target of the drawing device in the present invention is limited to the fingernail of the hand. The drawing target may be, for example, a toenail, a nail tip attached to the nail, or the like.

First, the overall configuration of the drawing system in this embodiment will be described.
FIG. 1 is a diagram showing a schematic configuration of the entire drawing system according to the present embodiment.
As shown in FIG. 1, the drawing system 1 in the present embodiment includes a nail printing device 2 which is a drawing device, and a terminal device 7 capable of communicating with the nail printing device 2.
In FIG. 1, a smartphone is imaged as the terminal device 7, but the terminal device 7 is not limited to the smartphone. For example, it may be a tablet-type personal computer (hereinafter referred to as "PC"), a notebook-type PC, a stationary PC, or the like. Further, the terminal device 7 can be widely applied as long as it can communicate with the nail printing device 2 and has a camera function. For example, a digital camera having a wireless communication function may be used.
Further, the communication between the nail printing device 2 and the terminal device 7 may use a network line such as the Internet, or a short-range wireless communication standard such as Bluetooth (registered trademark) or Wi-Fi. It may perform wireless communication based on. When communicating via a network, any line may be used as the network used for communication.
Further, the communication between the nail printing device 2 and the terminal device 7 is not limited to wireless, and various data may be transmitted / received between the two by a wired connection.
Hereinafter, the nail printing device 2 and the terminal device 7 constituting the drawing system 1 of the present embodiment will be described in detail.

First, the configuration of the nail printing device 2 of the present embodiment will be described.
As shown in FIG. 1, the nail printing device 2 which is a drawing device in the present embodiment has a housing 21 formed in a substantially box shape.
An operation unit 22 is installed on the upper surface (top plate) of the housing 21.
The operation unit 22 is an input unit in which the user performs various inputs.
The operation unit 22 is provided with operation buttons for performing various inputs, such as a power switch button for turning on the power of the nail printing device 2, a stop switch button for stopping the operation, and a drawing start button for instructing the start of drawing. Has been done.

A display unit 23 is installed on the upper surface (top plate) of the housing 21.
The display unit 23 is composed of, for example, a liquid crystal display (LCD), an organic electroluminescence display, or a flat display.
In the present embodiment, for example, various instructions, messages, and the like are appropriately displayed on the display unit 23.
A touch panel for performing various inputs may be integrally configured on the surface of the display unit 23. In this case, the touch panel functions as the operation unit 22.

Further, a finger insertion port 28, which is an opening for inserting a finger during drawing by the nail printing device 2, is formed on the front side (front side in FIG. 1) of the housing 21.
In the present embodiment, the fixing jig 6 described later is taken in and out of the device from the finger insertion port 28 with the printing finger U1 and its claw T fixed. Therefore, the finger insertion slot 28 is formed in a size that does not interfere with the insertion / removal of the fixing jig 6 in which the printing finger U1 and its claw T are fixed inside and outside the device.
Here, the print finger U1 is a finger having a claw T to be drawn by the drawing unit 40.

FIG. 2 is a perspective view of a main part showing the internal configuration of the nail printing device 2 by removing the housing 21 from the nail printing device 2 shown in FIG.
As shown in FIG. 2, inside the housing 21, a drawing unit 40 for drawing on the claw T of the printing finger U1 and a jig arranging unit 50 for positioning the printing finger U1 and the claw T are provided. There is.

The drawing unit 40 moves the drawing head 41, which is the main body of the drawing unit, the unit support member 42 that supports the drawing head 41, and the drawing head 41 in the X direction (X direction in FIG. 1 and the like, left and right direction of the nail printing device 2). X-direction moving stage 45, X-direction moving motor 46, and drawing head 41 for moving in the Y direction (Y direction in FIG. 1 and the like, Y direction moving stage 47 for moving the nail printing device 2 in the front-rear direction), Y direction moving. It is configured to include a motor 48 and the like. In the present embodiment, the head moving mechanism 49 (see FIG. 7) for moving the drawing head 41 is configured by the X-direction moving motor 46, the Y-direction moving motor 48, and the like.

The drawing head 41 of the present embodiment is an inkjet head that draws by an inkjet method.
The drawing head 41 is, for example, an ink cartridge (not shown) corresponding to yellow (Y; YELLOW), magenta (M; MAGENTA), and cyan (C; CYAN) inks and a drawing target (surface of the claw T) in each ink cartridge. This is an ink cartridge-integrated head in which an ink ejection portion (not shown) provided on facing surfaces (lower surfaces in FIGS. 1 and 2 in the present embodiment) is integrally formed. The ink ejection unit includes a nozzle array composed of a plurality of nozzles for ejecting ink of each color, and the drawing head 41 atomizes the ink into droplets and the surface to be drawn of the drawing target (claw T) from the ink ejection unit. Ink is sprayed directly on the surface to draw. The drawing head 41 is not limited to the one that ejects the above three colors of ink. An ink cartridge for storing other ink and an ink ejection unit may be provided.

Further, the unit support member 42 is fixed to the X-direction moving portion 451 attached to the X-direction moving stage 45. The X-direction moving unit 451 is driven by the X-direction moving motor 46 to move in the X-direction along a guide (not shown) on the X-direction moving stage 45, whereby the X-direction moving unit 451 is attached to the unit support member 42. The drawing head 41 moves in the X direction (X direction in FIG. 2, left-right direction of the nail printing device 2).
Further, the X-direction moving stage 45 is fixed to the Y-direction moving portion 471 of the Y-direction moving stage 47. The Y-direction moving unit 471 is driven by the Y-direction moving motor 48 to move in the Y-direction along a guide (not shown) on the Y-direction moving stage 47, whereby the Y-direction moving portion 471 is attached to the unit support member 42. The drawing head 41 moves in the Y direction (Y direction in FIG. 2, front-back direction of the nail printing device 2).
In the present embodiment, the X-direction moving stage 45 and the Y-direction moving stage 47 are configured by combining the X-direction moving motor 46 and the Y-direction moving motor 48 with a ball screw and a guide (not shown).
In the present embodiment, the X-direction moving motor 46, the Y-direction moving motor 48, and the like constitute a head moving mechanism 49 as an XY driving unit that drives the drawing head 41 in the X and Y directions.

The drawing head 41, the X-direction moving motor 46, and the Y-direction moving motor 48 in the drawing unit 40 are connected to the drawing control unit 313 (see FIG. 7) of the control device 30 described later, and are controlled by the drawing control unit 313.

The communication unit 24 is configured to be capable of transmitting and receiving information to and from the terminal device 7.
As described above, the communication between the nail printing device 2 and the terminal device 7 may be performed by any method, and the communication unit 24 includes an antenna chip or the like corresponding to the communication method of the terminal device 7.
The communication unit 24 is connected to the communication control unit 311 (see FIG. 7) of the control device 30 described later, and is controlled by the communication control unit 311.

The jig arranging portion 50 includes a finger resting table 53 having a top plate 51 forming an XY plane facing the ink ejection portion of the drawing head 41 and a support portion 52 for supporting the top plate 51 at a predetermined height position. I have.
A substantially U-shaped notch 511 opened on the front side of the device is formed at a substantially central portion of the upper surface plate 51 of the finger rest 53 in the device width direction (that is, the X direction in FIG. 2).
A flange portion 512 (see FIGS. 3A and 4) is formed inward in the notch portion 511. As will be described later, the flange portion 512 functions as a guide portion that guides the fixing jig 6 to a predetermined position in the jig arrangement portion 50.
Here, the "predetermined position" is on the XY plane (XY plane orthogonal to the height direction of the claw T) within the movable range Ar (see FIGS. 5 and 6) of the drawing head 41 by the drawing unit 40. It is a position where the second reference mark F2 and the claw T, which will be described later, are arranged at positions suitable for drawing. In this embodiment, it is within the movable range Ar and is orthogonal to the XY direction (orthogonal to the height direction of the claw T). This is the position where the claw T is arranged in the substantially central portion in the XY direction).

In this embodiment, an example is shown in which the flange portion 512 is provided over the entire circumference of the U-shaped notch portion 511 (see FIG. 4), but the range in which the flange portion 512 is provided is this. Not limited to. For example, the flange portion 512 may be provided only on both side portions in the X direction of the notch portion 511. Further, the flange portion 512 may not be continuously provided, and may be divided into several portions.

A fixing jig 6 is arranged in the notch 511 of the upper surface plate 51 so as to be detachably attached to the main body of the drawing device 2.
The fixing jig 6 is configured so that the printing finger U1, which is a finger having a nail T to be drawn by the drawing unit 40, can be fixed so that the nail T is exposed from the toe side.
Here, the configuration of the fixing jig 6 in the present embodiment will be described in detail with reference to FIGS. 3 (a), 3 (b), and 4 to 6.
FIG. 3A is a perspective view when the fixing jig in the present embodiment is viewed from an obliquely upward direction, and FIG. 3B is a case where the fixing jig in the present embodiment is viewed from an obliquely downward direction. It is a perspective view of. Further, FIG. 4 is a schematic plan view of the fixing jig 6 when viewed from the toe side.
Further, FIG. 5 is a plan view showing how the fixing jig is arranged in the jig arrangement portion, and FIG. 6 is a plan view showing a state in which the fixing jig is arranged at a predetermined position in the jig arrangement portion. Is.

As shown in FIGS. 3A and 3B, the fixing jig 6 covers the finger mounting member 61 on which the printing finger U1 is placed, the cover member 62, and the finger mounting member 61. It is provided with an urging member 63 for urging toward the 62 side.
In the present embodiment, as shown in FIGS. 3 (a), 3 (b) and 4, the fixing jig 6 is substantially a box as well as the cover member 62 which is an upper case formed in a substantially box shape. A finger mounting member 61 and an urging member 63 for urging the finger resting member 61 are arranged inside the space formed by the lower case 64 formed in the shape.

The finger mounting member 61 is a plate-shaped member on which the finger (printing finger U1) of the nail T to be drawn is placed.
The finger mounting surface (upper surface in FIG. 3A and the like) of the finger mounting member 61, which is the surface on which the printing finger U1 is placed, is shown in FIGS. 3 (a), 3 (b) and 4. As described above, when the printing finger U1 is placed, it is preferably formed in a shape having an arc-shaped cross section so as to be familiar with the shape.
Locking protrusions 611 are formed so as to project on both sides of the finger resting member 61 in the width direction. The locking projection 611 is movable in the vertical direction (vertical direction in FIG. 3A and the like) along the guide groove 625 of the cover member 62 described later.
By guiding the locking projection 611 along the guide groove 625 in this way, the finger mounting member 61 is brought into contact with and separated from the cover member 62 (that is, the vertical direction in FIG. 3A and the like). ) Can be moved.

Further, one end of the urging member 63 is on the back surface side of the finger mounting member 61 (that is, the surface opposite to the finger mounting surface, the lower surface in FIGS. 3A and 3B). The side is locked.
The other end side of the urging member 63 is locked to, for example, the inner bottom surface of the lower case 64.
In this embodiment, the urging member 63 is a coil spring.
The urging member 63 urges the finger resting member 61 in a direction of pushing it upward.
The urging member 63 is not limited to the coil spring, and can be applied as long as it is elastically deformable and has a restoring force.

As shown in FIG. 3A and the like, the cover member 62 is arranged on the front side in the printing finger insertion direction (that is, the fixing jig 6 is arranged in the cutout portion 511 of the upper surface plate 51 of the finger resting table 53 on the device main body side. The front side of the device in the closed state) is open.
The upper surface of the cover member 62 and the back side in the printing finger insertion direction is a window portion 621 for exposing the claw T of the printing finger U1 fixed by the fixing jig 6, and the claw T to be drawn. When the printing finger U1 having the above is fixed to the fixing jig 6, the printing finger U1 is fixed so that the nail T is exposed from the toe side.

Further, the upper surface of the cover member 62 and the front side in the printing finger insertion direction is a finger pressing portion 622 that prevents the height of the printing finger U1 from rising too high.
As shown in FIGS. 3A and 3B, a recess 623 is formed on the inner surface of the finger pressing portion 622 of the present embodiment, and the recess 623 has flexibility such as silicone or the like. A cushioning member 624 made of a soft resin or the like is arranged.
By providing the cushioning member 624 on the portion of the finger pressing portion 622 where the upper side of the printing finger U1 abuts (that is, the inner surface of the finger pressing portion 622 which is the upper surface of the cover member 62), the printing finger U1 is pushed up and the finger pressing is performed. It is preferable because it makes it difficult to feel an impact or pain when it is abutted against the portion 622.
The configuration of the finger pressing portion 622 is not limited to the one illustrated here, and may be, for example, a simple plate-like one without a cushioning member 624 or the like.

Further, as shown in FIGS. 3A and 3B, the finger mounting member 61 is moved up and down on both inner surfaces of the cover member 62 when the finger mounting member 61 moves up and down (FIG. 3 (FIG. 3). A guide groove 625 is formed to guide in the vertical direction in a) and FIG. 3 (b).
The guide groove 625 extends in the vertical direction (vertical direction) of the cover member 62, and its lower end (that is, the position farthest from the cover member 62) extends substantially toward the front side in the printing finger insertion direction. The portion that is L-shaped and extends toward the front side in the printing finger insertion direction is a protrusion locking portion 626 that locks the locking protrusion 611 of the finger mounting member 61.
The locking projection 611 of the finger mounting member 61 is locked at the position when it moves to the upper end of the guide groove 625 so that it does not rise any further, and the guide groove 625 is the finger mounting member. It also functions as a stopper that defines the highest point of 61.

Further, the guide groove 625 has a shape that gradually inclines toward the lower end portion where the protrusion locking portion 626 is provided, and when the finger mounting member 61 descends to the lowest point, the finger mounting member 61 is placed on the finger. The locking projection 611 of the member 61 is guided into the projection locking portion 626 along the guide groove 625.
By arranging the locking projection 611 of the finger mounting member 61 in the protrusion locking portion 626, the finger mounting member 61 is held at a position lowered to the lowest point against the urging force of the urging member 63. Therefore, when the printing finger U1 is inserted into the fixing jig 6, a wide insertion slot can be secured.
As described above, in the present embodiment, the finger mounting member is formed by the locking protrusion 611 provided on the finger mounting member 61 and the protrusion locking portion 626 provided on the cover member 62 to lock the locking protrusion 611. A lock mechanism for locking the 61 at a position separated from the cover member 62 is configured.

Further, the lower surface side of the cover member 62 is open, and an outward flange portion 622 is formed along the peripheral edge of the opening portion.
Further, the upper surface side of the lower case 64 is open, and an outward flange portion 642 is formed along the peripheral edge of the opening portion.
In the present embodiment, in the assembled state, the fixing jig 6 is fitted with the cover member 62 on the lower case 64 with its opening facing downward, and the cover member 62 and the outer flange portion 622 of the lower case 64 are fitted together. , 642 are overlapped with each other, and the outward flange portions 622 and 642 portions are fixed by a method such as adhesion. Then, the portion where the outward flange portions 622 and 642 are fixed and integrated in this way becomes the locking overhang portion 65. The method of fixing the outward flange portions 622 and 642 is not limited to adhesive fixing. For example, it may be fixed by screwing or welding.

As shown in FIG. 4, the fixing jig 6 of the present embodiment is provided with a first reference mark F1 that serves as a reference in the height direction of the claw T on the outer end surface on the toe side.
In the present embodiment, the first reference mark F1 is provided on the outer end surface of the lower case 64 on the nail tip side, and extends in the nail width direction of the nail T when the printing finger U1 is fixed in the fixing jig 6. It is a rectangular mark (in this embodiment, a rectangular shape elongated in the width direction of the claw T).
By making the first reference mark F1 rectangular, the first reference mark F1 has a certain width, and the image is compared with the case where the first reference mark F1 is composed of lines or the like. The processing makes it easier to recognize accurately.
In the rectangle constituting the first reference mark F1, the length of the long side of the rectangle is longer than the length dimension assumed as the finger width of the printing finger U1 (for example, about 20 to 30 mm), and the midpoint of the long side is It is near the center of the printing finger U1 set on the fixing jig 6 in the width direction. Further, it is desirable that the length of the short side of the rectangle is about the assumed height of the claw T (for example, 3 to 10 mm). However, the size and shape of the first reference mark F1 are not limited to the illustrated examples. In the present embodiment, the photographing unit 73 of the terminal device 7, which will be described later, photographs the fixing jig 6 in a state where the printing finger U1 is fixed from the tip end side of the claw T, and is provided on the fixing jig 6. The first image including the reference mark F1 and the claw T is acquired. As will be described later, from this first image, the detection processing unit 814 detects the position of the first reference mark F1 and the position of the upper surface of the claw T to detect the curved shape of the claw T in the claw width direction. At this time, the position of the first reference mark F1 is based on, for example, the upper long side of the first reference mark F1, and the distance from the long side to the upper surface of the claw T is obtained from the first image to obtain the claw. The height of the upper surface of T is detected.

The first reference mark F1 is the outer end surface on the toe side, and can be housed in one screen together with the nail T when the fixing jig 6 is photographed from the tip side of the nail T by the photographing unit 73. It suffices if it is provided at a position, and is not limited to the case where it is provided on the outer end surface of the lower case 64 on the toe side.
Further, the shape of the first reference mark F1 may be any shape as long as it can be accurately recognized by image processing, and is not limited to a rectangle, but may be a square or the like.
Further, in the present embodiment, the case where the first reference mark F1 has a rectangular shape is illustrated, but the first reference mark F1 may be limited to a rectangular shape as long as the reference position can be known. Not done. For example, the first reference mark F1 may be composed of an index such as a line or a plurality of points.

Further, the fixing jig 6 is provided with a second reference mark F2 (see FIGS. 5 and 6) as a reference for setting a drawing area by the drawing unit 40, and fixes the printing finger U1.
FIG. 5 is a plan view showing how the fixing jig is set in the notch portion of the upper surface plate of the finger resting table of the jig placement portion, and FIG. 6 is a plan view showing the fixing jig set in the notch portion of the upper surface plate. It is a top view which shows the state which was done.
As shown in FIG. 5, when the fixing jig 6 is arranged in the cutout portion 511 of the upper surface plate 51 of the finger resting table 53 of the jig placement portion 50, the locking overhanging portion 65 is the cutout portion. It is placed on the upper surface of the flange portion 512 of 511. Then, the locking overhanging portion 65 is guided along the upper surface of the flange portion 512 as a guide portion until the back side of the locking overhanging portion 65 abuts on the inner side of the notch portion 511. As a result, the claw T and the second reference mark F2 can be smoothly moved to a predetermined position, which is a position suitable for drawing.
The configuration for accurately arranging the fixing jig 6 at a predetermined position in the jig arranging portion 50 is not limited to this. For example, a guide groove or a guide convex portion to be locked to the guide groove is provided on the outer surface of the locking overhanging portion 65, and the locking overhanging portion 65 is provided at the corresponding position on the inner surface of the notch portion 511. By providing a guide convex portion or a guide groove corresponding to the guide groove or the guide convex portion and guiding the guide convex portion along the guide groove, the fixing jig 6 is always accurately positioned at a predetermined position in the jig arrangement portion 50. It may be configured to be arranged in.

As shown in FIGS. 5 and 6, in the present embodiment, the outer circumference of the locking overhanging portion 65 is the outer circumference of the fixing jig 6, and the outer circumference of the fixing jig 6 sets the drawing area by the drawing portion 40. It becomes the second reference mark F2 that serves as a reference.
Specifically, at the intersections of the sides forming the outer circumference of the locking overhanging portion 65 (that is, the four corners of the locking overhanging portion 65), an index 651 that defines the second reference mark F2 is provided. It is provided. The index 651 is provided, for example, by printing or sticking a sticker. The detection processing unit 814 of the terminal device 7, which will be described later, detects the index 651 and detects the position of the second reference mark F2 from the index 651.

The second reference mark F2 is within the movable range Ar, which is the range in which the drawing unit 40 can draw on the upper surface plate 51 of the finger rest 53, and is outside the portion where the claw T is arranged. It is not limited to the case where it coincides with the outer circumference of the locking overhanging portion 65. A second reference mark F2 may be set inside the outer circumference of the locking overhanging portion 65.
Further, the shape of the second reference mark F2 may be any shape as long as it can be accurately recognized by image processing, and is not limited to a rectangle but may be a square.
Further, in the present embodiment, the case where the second reference mark F2 has a frame shape is illustrated, but the second reference mark F2 may be limited to the frame shape as long as the reference position can be known. Not done.
As will be described later, in the present embodiment, the detection processing unit 814 detects the second reference mark F2 and performs keystone correction as appropriate. At the time of this keystone correction, it is preferable that the second reference mark F2 has a frame shape, but if the second reference mark F2 is such that the apex of the rectangle can be seen, the keystone correction can be performed.
Further, the index 651 may be any as long as it can be detected by the detection processing unit 814 of the terminal device 7, and its shape, the number provided, and the like are not limited to the illustrated examples. For example, the index 651 may be "■", "□", "●", "○", a bracket shape, or a combination thereof. Further, the index 651 may be a line-shaped index drawn along the second reference mark F2. When the index 651 is in the form of a line, it may extend over the entire circumference of the second reference mark F2, or may be partially provided. Further, the range of the second reference mark F2 may be indicated by color-coding the inside and outside of the second reference mark F2.

Next, the control configuration of the nail printing device and the terminal device constituting the drawing system will be described with reference to FIG. 7 and the like.
FIG. 7 is a block diagram showing a main part control configuration of the nail printing device 2 and the terminal device 7 constituting the drawing system 1 of the present embodiment.
As shown in FIG. 7, the nail printing device 2 of the present embodiment includes an operation unit 22, a display unit 23, a communication unit 24, a drawing unit 40, and a control device 30 as described above.

As shown in FIG. 7, the control device 30 includes a control unit 31 composed of a CPU (Central Processing Unit) and the like (not shown), and a ROM (Read Only Memory) and a RAM (Random Access Memory) and the like (not shown). It is a computer including a storage unit 32.

The storage unit 32 stores various programs, various data, and the like for operating the nail printing device 2.
Specifically, various programs such as a drawing program for performing drawing processing are stored in the ROM, and the control device 30 expands these programs in, for example, a RAM work area and executes them to perform nail art. The drawing unit and the like of the printing device 2 are controlled.

From a functional point of view, the control unit 31 includes a communication control unit 311, a display control unit 312, a drawing control unit 313, and the like. The functions as the communication control unit 311, the display control unit 312, the drawing control unit 313, and the like are realized by the cooperation between the CPU of the control unit 31 and the program stored in the ROM of the storage unit 32.

The communication control unit 311 controls the operation of the communication unit 24. In the present embodiment, communication with the terminal device 7 is controlled, and when drawing data or the like is transmitted from the terminal device 7, it is received. If a problem occurs during drawing on the nail printing device 2 side or any other change occurs in the operating state, that fact may be transmitted to the terminal device 7 side.

The display control unit 312 controls the display unit 23 to display various display screens on the display unit 23. In the present embodiment, the display control unit 312 causes the display unit 23 to display, for example, a message or various instructions to the user.

When the drawing data is transmitted from the terminal device 7, the drawing control unit 313 controls each part of the drawing unit 40 to perform a drawing operation according to the drawing data, and creates a nail design on the surface of the nail T. Let it draw.
Specifically, the drawing control unit 313 outputs a control signal to the drawing unit 40 based on the drawing data, and draws at a predetermined position on the claw T while appropriately moving the drawing head 41 in the X direction and the Y direction. The drawing head 41 of the drawing unit 40, the X-direction moving motor 46, the Y-direction moving motor 48, and the like are controlled so as to draw according to the data.
Further, in the present embodiment, the drawing control unit 313 corrects the offset value before starting the drawing process by the drawing unit 40.
In order to set the area where drawing is actually performed (that is, the claw area), the second reference mark F2 of the fixing jig 6 with respect to the XY scanning area (that is, the movable range Ar of the drawing head 41) in the nail printing device 2 Where it is necessary to accurately grasp the positional relationship between the two, the information indicating the positional relationship between the two (positional relationship information) is a device-specific value that depends on the mechanical design requirements and processing accuracy of each nail printing device 2. (Offset value).
In the present embodiment, it is assumed that this positional relationship information has been acquired in advance on the device side. Then, when the drawing control unit 313 acquires the drawing data from the terminal device 7, the drawing control unit 313 corrects the position (claw region) of the claw T based on the positional relationship information.

Here, the offset value correction by the drawing control unit 313 will be described in detail with reference to FIG. 6 and the like.
As shown in FIG. 6, in the XY coordinate system, the coordinate system of the XY scanning area based on the movable range Ar of the drawing head 41 of the drawing unit 40 in the nail printing device 2, the printing finger U1 and the claw T are fixed. There are two types of the coordinate system in the fixing jig 6.
The coordinate system of the XY scanning region in the nail printing device 2 is an region surrounded by "GA, GB, GC, GD" with "GA" (that is, a point on the left back side of the movable range Ar) as the origin in FIG. Is. In the present embodiment, the drawing head 41 can be scanned and moved in the XY directions within this range. However, the area that can be actually drawn by the drawing head 41 is within the second reference mark F2.
On the other hand, the coordinate system in the fixing jig 6 for fixing the printing finger U1 and the claw T has "NA" (that is, the point on the left back side of the second reference mark F2) as the origin in FIG. 5, and "NA, It is an area surrounded by "NB, NC, ND".

As shown in FIG. 6, the origin "NA" of the coordinate system in the fixing jig 6 is "GN" (gx1, gy1) when expressed in the coordinate system of the XY scanning area in the nail printing device 2, and this coordinate point is It is a device-specific value (offset value) determined by mechanical design elements.
Here, the dimensions of the second reference mark F2 are known in the nail printing device 2, and the coordinate system (origin “GA”) and the fixing jig 6 of the XY scanning region in the nail printing device 2 are based on the actual dimensions. The coordinate system (origin "NA") in is both scale-adjusted.
On the premise that such scale adjustment is performed, the offset value of each point of "NA, NB, NC, ND" in the coordinate system of the fixing jig 6 is set in the coordinate system of the XY scanning area in the nail printing device 2. Expressed in a considered state, NA is (gx1, gy1), NB is (gx1, gy1 + ny3), NC is (gx1 + nx3, gy1 + ny3), and ND is (gx1 + nx3, gy1). The drawing control unit 313 performs offset value correction that replaces the drawing data received from the terminal device 7 with coordinates that take such offset values into consideration. As a result, it is possible to draw on the correct nail area that reflects the individual differences of each device.

Further, as shown in FIG. 7, the terminal device 7 of the present embodiment is configured to be communicable with the nail printing device 2 which is a drawing device, and the operation unit 71, the display unit 72, the photographing unit 73, It includes a communication unit 74, a control device 80, and the like.

The terminal device 7 of the present embodiment includes a capacitive touch panel 70 that functions as an operation unit 71 and a display unit 72.
The touch panel 70, which is the operation unit 71, can perform various input / setting operations according to the touch operation of the user. When the operation unit 71 is operated, the input corresponding to the operation is performed. The signal is transmitted to the control unit 81. The operation unit 71 is not limited to the touch panel 70. For example, various operation buttons, a keyboard, a pointing device, and the like may be provided as the operation unit 71.
In the present embodiment, the user can select the nail design to be drawn on the nail T by operating the operation unit 71.

The touch panel 70, which is the display unit 72, displays various display screens under the control of the display control unit 812, which will be described later.
In the present embodiment, the display unit 72 has a nail design input / selected from the operation unit 71, an image of the nail T acquired by the photographing unit 73 and a printing finger U1 including the nail design, and a first reference mark F1. , An image or the like obtained by capturing the second reference mark F2 can be displayed.

The photographing unit 73 is, for example, a small camera configured to include a photographing element, a lens, a lighting device (for example, an LED), and the like (none of which are shown).
The photographing unit 73 may have a self-timer function, an audio shutter function, and the like. When the user himself / herself takes a picture of his / her finger, such as when he / she cannot ask another person to take a picture, he / she may take a picture using these functions. By using such a function, it is possible to easily take a picture even when taking a picture of the finger of the dominant hand.
Further, the photographing unit 73 is not limited to the one that captures a still image. For example, a moving image may be taken, and an image at an appropriate timing may be cut out as a still image from the continuous shooting data and used.
In the present embodiment, the photographing unit 73 takes a picture of the fixing jig 6 in which the printing finger U1 is fixed from the tip end side of the nail T outside the nail printing device 2, and is provided on the fixing jig 6. A first image including the reference mark F1 and the claw T is acquired. Further, the photographing unit 73 photographs the fixing jig 6 in which the printing finger U1 is fixed from directly above the nail T outside the nail printing device 2, and provides a second reference mark provided on the fixing jig 6. A second image including F2 and the claw T is acquired.
The number of times the first image and the second image are taken is particularly limited, and the shooting unit 73 may take the first image and the second image a plurality of times, respectively.
The imaging unit 73 is connected to an imaging control unit 813 (see FIG. 7) of the control device 80 described later, and is controlled by the imaging control unit 813.
It is preferable that the first image and the second image are taken with the same angle of view, the number of pixels, and other shooting conditions, and it is preferable that the first image and the second image are taken by the same shooting unit 73.
The image data of the image taken by the photographing unit 73 is stored in the claw information storage unit 823 of the storage unit 82, which will be described later.

The communication unit 74 can transmit drawing data to the nail print device 2, and includes a wireless communication module and the like capable of communicating with the communication unit 24 of the nail print device 2.
The communication unit 74 may be any one capable of communicating with the nail printing device 2, and the communication unit 74 that matches the communication standard of the communication unit 24 of the nail printing device 2 is applied.

As shown in FIG. 7, the control device 80 of the terminal device 7 of the present embodiment includes a control unit 81 composed of a CPU (Central Processing Unit) and the like (not shown), and a ROM (Read Only Memory) and a RAM (Random) (not shown). It is a computer including a storage unit 82 composed of Access Memory) and the like.

The storage unit 82 stores various programs, various data, and the like for operating each unit of the terminal device 7.
Specifically, in the ROM or the like of the present embodiment, in addition to the operation program 821a for comprehensively controlling each part of the terminal device 7, the nail print application program 821b for performing nail printing using the nail print device 2 ( Various programs such as (hereinafter referred to as "nail print AP") are stored, and the terminal device 7 is controlled by the control device 80 expanding and executing these programs in, for example, a work area of a RAM. It has become.
Further, the storage unit 82 of the present embodiment is provided with a design storage unit 822 for storing nail design data, a nail information storage unit 823 for storing an image of the nail T, information on the position / range of the nail T, and the like. ing.

From a functional point of view, the control unit 81 includes a communication control unit 811, a display control unit 812, a shooting control unit 813, a detection processing unit 814, a drawing data generation unit 815, and the like. The functions as the communication control unit 811, the display control unit 812, the shooting control unit 813, the detection processing unit 814, the drawing data generation unit 815, etc. are the functions of the CPU of the control unit 31 and the program stored in the ROM of the storage unit 32. Realized by collaboration.

The communication control unit 811 controls the operation of the communication unit 74. In the present embodiment, communication with the nail printing device 2 is controlled, and drawing data and the like are transmitted to the nail printing device 2. When information is also transmitted from the nail print device 2 side, the communication unit 74 is controlled to receive the information.

The display control unit 812 controls the display unit 72 to display various display screens on the display unit 72.
In the present embodiment, the display control unit 812 causes the display unit 72 to display, for example, a design selection screen that prompts the user to select a nail design to be drawn on the nail T. When displaying the design selection screen, the display control unit 812 causes the display unit 72 to sequentially or list the nail designs stored in the design storage unit 822.
Further, when the first image and the second image obtained by photographing the nail T, the first reference mark F1 and the second reference mark F2 by the photographing unit 73 are acquired, they are displayed on the display unit 72. You may.
Further, the display control unit 812 displays an image in which the nail design selected by the user is superimposed on the image of the nail T on the display unit 72 so that the user can confirm the finished image before the actual start of drawing, and is liked. If not, you may be able to reselect the nail design.
Further, the display control unit 812 may display a message to the user, various instructions, and the like on the display unit 72.

The shooting control unit 813 controls the shooting unit 73 to perform various shootings.
In this embodiment, the fixing jig 6 is arranged outside the nail printing device 2 for shooting.
When lighting is required due to the position where the fixing jig 6 is placed or the like, the light (illumination device) of the photographing unit 73 may be turned on and the image may be taken in the illuminated state.
In the present embodiment, the photographing control unit 813 controls the photographing unit 73 to display one image of the printing finger U1 (and its claw T) fixed to the fixing jig 6 and the first reference mark F1. An image is taken from the tip side of the claw in the fixing jig 6 so that it fits inside, and an image is acquired.
Since the positional relationship between the first reference mark F1 and the device body of the nail printing device 2 is grasped on the device side, if there is a deviation in the shooting direction, tilt, etc. during shooting, , The correction can be performed and adjusted by performing image processing using the first reference mark F1 or the like.
Further, in the present embodiment, the photographing control unit 813 controls the photographing unit 73 to set the printing finger U1 (and its claw T) fixed to the fixing jig 6 and the second reference mark F2 by 1. An image is taken from above the fixing jig 6 so as to fit in one image, and the image is acquired.
Since the positional relationship between the second reference mark F2 and the device main body of the drawing device 2 is also grasped on the device side, if there is a deviation in the shooting direction, tilt, etc. during shooting, , The correction can be performed and adjusted by performing image processing using the second reference mark F2 or the like.

The detection processing unit 814 is a functional unit that performs various image processing, and is based on a first image acquired by photographing the fixing jig 6 from the tip side of the claw T by the photographing unit 73. Detects curved shape in the width direction.
That is, the detection processing unit 814 first detects the position of the first reference mark F1 and the position of the upper surface of the claw T from the first image acquired by the photographing unit 73.
As shown in FIG. 4, in the present embodiment, the distance from the long side on the upper side of the first reference mark F1 to the upper surface of the claw T is defined as the claw height Z. It should be noted that the distance from the first reference mark F1 to be the claw height Z may be appropriately specified. For example, the claw height extends from the long side below the first reference mark F1 to the upper surface of the claw T. The height Z may be set from the center line in the height direction of the first reference mark F1 to the upper surface of the claw T.
In the present embodiment, the positional relationship between the first reference mark F1 and the second reference mark F2 is preferably defined and fixed in advance, and the second reference mark F2 and the claw T are clawed as described later. When each point of the contour defining the range of the nail T (that is, the nail region) is detected from the second image taken from directly above the T, the detection processing unit 814 moves the upper side of the first reference mark F1. The distance from the long side to each point of the contour that demarcates the nail region is obtained from the first image.

FIG. 8 is a graph showing the curved shape of the nail shown in FIG. 4 by the nail width and the level in the nail height direction.
In FIG. 8, the position in the X direction (that is, the claw width W direction) in FIGS. 4 and 5 is taken on the horizontal axis, and the claw region is defined from the upper long side of the first reference mark F1 obtained by the detection processing unit 814. Regarding the distance to each point of the contour to be drawn, the claw height Z, which is the distance from the surface (upper surface) of the claw T to the upper long side of the first reference mark F1, is divided into three levels of Z value levels. However, this is shown on the vertical axis.
Further, FIG. 9 is a schematic plan view showing an example of a drawing region in which the surface of the nail is divided into regions according to the level of the nail height Z.
As shown in FIG. 8, the surface (upper surface) of the claw T has the highest claw height Z at the center and is relatively flat. Is in a hurry.

In the present embodiment, as shown in FIGS. 8 and 9, both ends in the claw width direction are defined as an inclined region Ar1 having a steep inclination angle, and the range is a region w1R from the right end in the claw width direction in the drawing region. , The area has a width w1L from the left end in the claw width direction.
Further, the central portion in the nail width direction is defined as a flat region Ar3 having a high nail height and relatively flat, the region intermediate between the inclined region Ar1 and the flat region Ar3 is defined as an intermediate region Ar2, and the range is defined as the intermediate region Ar2 in the drawing region in the nail width direction. The area of the width w2R between the inclined area Ar1 (the area of the width w1R from the right end) and the flat area Ar3 on the right side of the above, and the inclined area Ar1 (the area of the width w1L from the left end) on the left side in the claw width direction and the flat area. It is a region having a width w2L between Ar3 and Ar3. The range of the intermediate region Ar2 in the drawing region can be represented by w / 2- (w2L + w1L) on the right side from the center in the nail width direction and w / 2- (w2R + w1R) on the left side.

The detection processing unit 814 analyzes the region on the left side and the region on the right side of the center of the nail width direction, respectively, and FIG. 9 shows a state in which the left and right analysis results are combined at the center portion.
In the present embodiment, the claw region in the drawing region is divided into an inclined region Ar1, an intermediate region Ar2, and a flat region Ar3 using the Z value ratios B1 and B2 (B1 <B2).
That is, in the present embodiment, the detection processing unit 814 subdivides the claw region in the drawing region into vertically elongated regions along the Y axis, and sets the average reflection brightness of each small region as the scale of the maximum value of the region. Normalize to match. Then, the region higher than the constant Z value ratio B2 is divided into the flat region Ar3, the region lower than the constant Z value ratio B1 is divided into the inclined region Ar1, and the region located in the middle thereof is divided into the intermediate region Ar2.

Further, the detection processing unit 814 detects the position of the second reference mark F2 and the region of the claw T from the second image acquired by the photographing unit 73 from directly above the fixing jig 6. ..
First, the detection processing unit 814 detects the index 651 from the image acquired by the photographing unit 73, and detects the second reference mark F2 from the position of the index 651. In the present embodiment, indexes 651 are provided at the four corners of the locking overhanging portion 65 that coincides with the outer circumference of the second reference mark F2, and the detection processing unit 814 detects the position of the index 651 and also detects the position of the index 651. A quadrangle (rectangle in the present embodiment) having these four indexes 651 as vertices is detected as the second reference mark F2.
Further, the detection processing unit 814 performs keystone correction on the detected second reference mark F2.
In the present embodiment, shooting is performed with the fixing jig 6 arranged outside the nail printing device 2. Therefore, it is assumed that the photographing unit 73 does not take an image from directly above the fixing jig 6 and takes an image from a deviated angle position. In such a case, the second reference mark F2, which should be rectangular in a plan view, may not be photographed in the correct shape, and may be photographed by being distorted or tilted into a trapezoid. Even in such a case, since the device side knows that the shape of the second reference mark F2 when viewed from directly above is rectangular, correction is performed to convert this into a rectangular shape. In addition, camera shake or the like may occur during shooting. In this case, the detection processing unit 814 may perform camera shake correction as appropriate to obtain an image without camera shake.
Then, the detection processing unit 814 converts the XY coordinate point data of the four corners (NA, NB, NC, ND in FIG. 5) of the second reference mark F2 into the coordinate point data of the reference point of the second reference mark F2 (FIG. 5). In 5, it is acquired as NA (nx0, ny0), NB (nx0, ny3), NC (nx3, ny3), ND (nx3, ny0)).

Further, the detection processing unit 814 recognizes the contour shapes of the printing finger U1 and the nail T from the image acquired by the photographing unit 73, and obtains XY coordinate point data with respect to the reference point of the second reference mark F2.
As a method of recognizing the contour shapes of the printing finger U1 and the nail T from the image, for example, a method of determining the boundary by the difference in color tone can be used, but the method is not limited to this.
Further, when a plurality of images are acquired from various angular positions by the photographing unit 73, the detection processing unit 814 may obtain the curvature of the claw T or the like from the plurality of images.
The image processing for recognizing the second reference mark F2 and the image processing for recognizing the contour shape of the printing finger U1 and the nail T may be processed from the same image, and the trimming setting and the filtering setting may be changed. You may process using the separate images.

The drawing data generation unit 815 sets a drawing area by the drawing unit 40 from the detection result by the detection processing unit 814, and generates drawing data.
That is, as shown in FIG. 5, when the length of the claw T detected by the detection processing unit 814 is ny1 to ny2 and the claw width is nx1 to nx2, the claw region is inside the second reference mark F2. It is a region within (nx1, ny1) to (nx2, ny2).
The drawing data generation unit 815 cuts out the image data of the nail design selected by the user who is the drawing target according to the shape of the nail region (the contour shape of the nail T), enlarges / reduces it appropriately, and performs the second reference. Area filling data is created for the nail area, which is a drawing area in the mark F2. Then, blank data (data indicating a non-drawing area) is arranged on the outside of the nail area in the second reference mark F2. As a result, the generation of drawing data composed of the blank data in the rectangular second reference mark F2 and the area filling data in the nail area is completed.
The data processing procedure is the same when drawing data is generated not for the nail area but for the finger area or the like which is the area of the printing finger.
The drawing data generated by the drawing data generation unit 815 is transmitted to the nail print device 2 via the communication unit 74.

Next, the operation of the drawing system 1 of the present embodiment will be described with reference to FIG. 10 and the like.
When drawing a nail design on the nail T using the drawing system 1 in the present embodiment, the user first selects execution of the nail print process from the operation unit 71 of the terminal device 7. As a result, the nail print AP821b is activated (step S1). When the nail print AP821b is activated, the display control unit 812 reads the nail design from the design storage unit 822 and causes the display unit 72 to display a design selection screen asking the user to select the nail design (step S2). When the user selects one of the nail designs displayed on the design selection screen by performing an input operation such as a touch operation, the desired nail design is selected as the design to be drawn on the nail T (step S3).

On the other hand, when the power of the nail printing device 2 is turned on (step S4), the display control unit 312 of the nail printing device 2 displays an instruction screen prompting the printing finger U1 to be set at a predetermined position of the fixing jig 6. It is displayed on the unit 23 (step S5).
The display prompting the printing finger U1 to be set on the fixing jig 6 may be displayed on the display unit 72 of the terminal device 7, or may be displayed on both the display units 23 and 72.

The user sets the printing finger U1 on the fixing jig 6 according to the instruction. The message "Please take a picture of your finger and the first reference mark from the tip side of the nail" is displayed on the display unit 72 of the terminal device 7 or the display unit 23 of the nail printing device 2 (step S6) and fixed. The printing finger U1 fixed to the jig 6 and the first reference mark F1 are photographed from the tip end side of the claw T by the photographing unit 73 of the terminal device 7, whereby the printing finger U1 fixed to the fixing jig 6 and the printing finger U1 are photographed. The first image with the first reference mark F1 is acquired by the terminal device 7 (step S7).
Further, a message "Please take a picture of the finger and the second reference mark from the surface side of the nail" is displayed on the display unit 72 of the terminal device 7 or the display unit 23 of the nail printing device 2 (step S8). , The printing finger U1 and the second reference mark F2 fixed to the fixing jig 6 are photographed by the photographing portion 73 of the terminal device 7 from the surface (upper surface) side of the nail T, thereby being fixed to the fixing jig 6. A second image of the printing finger U1 and the second reference mark F2 is acquired by the terminal device 7 (step S9).
In steps S6 and S8, the display unit for displaying the message may be either the display unit 72 of the terminal device 7 or the display unit 23 of the nail printing device 2, and may be displayed on both display units 23 and 72. good.

An instruction is displayed on the display unit 23 of the nail printing device 2 to prompt the user to set the fixing jig 6 on the jig arranging unit 50 with the printing finger U1 fixed after the shooting is completed (step S10). Sets the fixing jig 6 at a predetermined position of the jig arranging portion 50 according to the instruction. The instruction for prompting the fixing jig 6 to be set in the jig arrangement unit 50 may be displayed on the display unit 72 of the terminal device 7, or may be displayed on both the display units 23 and 72. ..
In the present embodiment, as shown in FIG. 5, the fixing jig 6 is fitted into the notch 511 provided in the jig arrangement portion 50 so as to slide on the flange portion 512, and the notch 511 is inserted. Push in the direction of the black arrow until the end on the insertion side of the fixing jig 6 hits the innermost part of. As a result, as shown in FIG. 6, the fixing jig 6 is set at a predetermined position of the jig arranging portion 50.

On the other hand, the detection processing unit 814 of the terminal device 7 detects the second reference mark F2 by performing image processing on the second image acquired by the photographing unit 73 (step S12). If the detected second reference mark F2 is distorted or the like, keystone correction is performed so that the contour of the claw T in the second reference mark F2 is oriented in a direction suitable for printing. Then, the rectangular second reference mark F2 having no distortion or inclination is detected (step S13).
Further, the detection processing unit 814 detects the contours of the printing finger U1 and the nail T by performing image processing on the second image acquired by the photographing unit 73 (step S14).
Next, the detection processing unit 814 detects the first reference mark F1 by performing image processing on the first image acquired by the photographing unit 73 (step S15).
Then, the detection processing unit 814 detects the claw height Z of the claw T by performing image processing on the first image acquired by the photographing unit 73 (step S16).

When the contours of the printing finger U1 and the nail T are detected by the detection processing unit 814 and the height information in the nail width direction of the nail is detected, the drawing data generation unit 815 responds to the detection result of the detection processing unit 814. Initial image data (RGB data) before being converted into drawing data is generated (step S17). Further, the drawing data generation unit 815 appropriately corrects the curved surface of the image data of the nail design according to the detected nail height (step S18). Then, the drawing data generation unit 815 generates drawing data based on the detection result by the detection processing unit 814 (step S19).

Specifically, the drawing data generation unit 815 is first selected to draw on the nail based on the contour of the nail T detected by the detection processing unit 814 (the size of the nail area (drawing area)). Initial drawing data is created by trimming or resizing the image of the nail design.
Next, the drawing data generation unit 815 adjusts the density of the initial drawing data corresponding to the curved shape according to the pixel arrangement. For example, in the inclined region Ar1 (regions having widths w1R and w1L from the left and right ends of the claw region, respectively), high-concentration data is generated so that more ink is ejected than in the flat portion (for example, flat region Ar3), and in the present embodiment. The curved surface of the image data is corrected so that the amount of ink ejected from the CMY or CMYB ink of the inkjet drawing head 41 is increased. How much ink is to be added is determined by the ratio of the Z value of the flat region Ar3 to the Z value of the inclined region Ar1. Adjust so that the density is four times that of the area Ar3), and when the ratio of the Z value of the flat area Ar3 to the Z value of the inclined area Ar1 is small, the ink density drawn is slightly darkened (for example, the ink density is flat in the inclined area Ar1). The concentration is adjusted so as to make the concentration twice that of the region Ar3).
Further, the other regions are subjected to normal density adjustment, and the amount of ink ejected from the CMY or CMYB of the drawing head 41 is set to the normal amount.
There are two methods for adjusting the density, one is to adjust the "dot density" by increasing or decreasing the amount of ink dots applied, and the other is to increase or decrease the density of ink dots. good.
Further, in this embodiment, the drawing area is divided into three, Ar1 to Ar3, but it may be divided into more inclination levels. In this case, it is possible to finely adjust the concentration according to the curved shape of the claw T, for example, adjusting the concentration between 4 times and 1 time according to the inclination angle according to the curved shape of the claw T. It will be possible.

The drawing data generation unit 815 determines whether or not the density correction is necessary for all the pixels, and if the correction is necessary, the degree of the correction, and appropriately corrects the entire image data. This completes the drawing data generation work.
When the drawing data generation work is performed in the state of the CMY value or the CMYB value which is the drawing data to be transmitted to the nail printing device 2, the density adjustment in the curved surface correction or the like is performed to adjust the density of the ink dots. And the dot density can be adjusted.
The density adjustment in the curved surface correction or the like is not limited to the case where the CMY value or the CMYB value is used, and the initial drawing data before being converted into the drawing data to be transmitted to the nail printing device 2 originally has. This may be performed by increasing or decreasing each RGB value in the state of RGB values.

The drawing data generated by the drawing data generation unit 815 is transmitted from the terminal device 7 to the nail printing device 2 via the communication units 24 and 74 (step S20).
When the nail print device 2 receives the drawing data (step S21), the drawing control unit 313 corrects the offset value of the drawing data (step S22). Then, the corrected drawing data is output to the drawing unit 40, and the drawing process is started (step S23). When the drawing of the nail design for the nail T is completed (step S24), the drawing process in the present embodiment is completed.
When the drawing process is completed, the display unit 23 or the like may be displayed to that effect.
When the drawing process is completed, the user pulls out the fixing jig 6 from the apparatus, removes the printing finger U1 from the fixing jig 6, and performs post-processing such as drying the drawing portion and applying an overcoating agent.

Although not particularly described above, when drawing on the nail T with the drawing system 1 of the present embodiment, the user first applies an undercoating agent such as white to the nail region and dries it in advance. After the treatment, it is preferable to fix the printing finger U1 and its claw T to the fixing jig 6.

In addition, when performing nail printing using this drawing system 1, at least when using it for the first time, fixing jigs for the fingers to be drawn (for example, 10 fingers from the left and right thumbs to the little finger). A storage unit of the terminal device 7 is photographed in a state of being fixed to 6, and is associated with information for identifying the photographed image and the user, information indicating each finger type (that is, the type of thumb, little finger, etc.), and the like. It may be stored in 82 or the like and registered. In this case, the information once registered may be saved until it is reset or updated, and the already registered information may be referred to as the default in the second and subsequent drawing processes.
In this way, by registering the image of the nail T to which the user and finger type incidental information are attached in advance, the shape (size, landscape / portrait) of the nail T is displayed on the design selection screen for selecting the nail design. It is also possible to preferentially display as a candidate only a design that matches the shape of the claw T or the like.
Further, when the image of the nail T associated with the finger type is saved, for example, when drawing in order from the thumb and when it is set to draw a different design for each finger, the above step. The image of the nail T acquired in S6 is matched with the image of the nail T stored in association with the finger type in advance, and when it is determined that the two are different, the display unit 72 or the like is used. A message such as "A finger different from the one to be drawn is set" may be displayed to alert the user.

As described above, according to the present embodiment, the printing finger U1 and the claw T are fixed to the fixing jig 6 detachably configured to the nail printing device 2 and fixed outside the nail printing device 2. The jig 6 is photographed from the tip of the nail, an image including the first reference mark F1 and the nail T is acquired, and the position of the first reference mark F1 and the position of the nail T are detected from the acquired image. .. Then, the curved shape of the nail T to be drawn by the drawing unit 40 in the claw width direction is detected from the detection result, and the curved surface is appropriately corrected according to the curved shape, and then the drawing data is generated.
Therefore, it is possible to perform appropriate curved surface correction for various nails having various curved shapes, and it is possible to perform high-definition drawing without distortion or blurring up to the end of the nail T. ..
Then, in the present embodiment, an image of the nail T or the like is acquired in the photographing unit of the terminal device different from the nail printing device 2, and the curved shape of the nail T is detected based on the image. Therefore, it is not necessary for the nail printing device 2 to be provided with a configuration such as a camera or a lighting device for acquiring an image. This eliminates the need for labor such as camera positioning work, keeps the cost of the device itself low, and does not complicate the wiring in the device, so that it can be realized with a simple configuration.
Further, in the present embodiment, the first reference mark F1 is a rectangular mark extending in the nail width direction. Therefore, when analyzing the image, the position or the like can be recognized more accurately as compared with the case where the first reference mark F1 is composed of lines.

In addition, since the terminal device 7 side also performs image recognition of the image taken by the camera and generation of drawing data based on the recognition result, various resources (for example, circuit scale and circuit scale) required for calculation processing are performed on the nail printing device 2 side. Memory, storage for storing reference files, etc.) can also be applied at low cost and small, and in this respect as well, cost reduction and simplification of device configuration can be realized.
Further, unlike the case where an image is taken on the nail printing device 2 side, the image is sent to an external device, and image processing or the like is entrusted to the external device, image data is exchanged between the nail printing device 2 and the external device. Since it is not necessary to do this and the time required for data communication can be reduced, the processing speed can be increased and the drawing processing can be performed quickly.

Further, especially in the case of a drawing target having a curved surface such as a nail T, high-definition drawing cannot be performed unless the curved shape is accurately detected and correction is performed accordingly, but tentatively, nail printing is performed. Even if the photographing means is provided in the device 2, it is difficult to accurately grasp the three-dimensional shape such as the curvature only by the image obtained by photographing the nail T from the information. For this reason, it is necessary to take a picture a plurality of times by changing the angle, or to take a picture of the change in the shadow while changing the lighting method. It is difficult to provide lighting means, and it is inevitable that the configuration will be complicated and the equipment cost will increase. Further, when the claws inside the device are photographed from the outside, it is necessary to provide a window or the like for photographing the inside of the device on the outer wall of the device, which takes time and effort to produce the device and also restricts the design. ..

In this respect, since the nail T is photographed outside the device in the present embodiment, the nail T can be photographed from any angle, and the shape (curved shape) of the nail T in the height direction is most easily detected. Shooting from the tip of the nail can be easily realized, and the degree of freedom in device design of the nail printing device 2 is improved.
Then, even if the external terminal device 7 performs from shooting to generating drawing data in this way, a second reference mark F2 is provided on the fixing jig 6 for fixing the printing finger U1 and the claw T, and printing is performed. By photographing the finger U1 and the nail T together with the second reference mark F2, the position coordinates of the nail T can be accurately grasped in relation to the nail printing device 2, and the fixing jig 6 can be attached to the nail printing device 2. When setting and drawing, the drawing area (nail area) can be set accurately, and precise drawing processing can be performed on the nail area.
Further, since the shooting is performed outside the device, the shooting can be performed in a free place with the hands, and the burden on the user can be reduced.
Further, the mist of ink ejected from the drawing head 41 may be scattered in the nail printing device 2 at the time of drawing or the like, and if there is a camera in the device, the ink mist adheres to the lens and each mechanical part. There is a risk of getting dirty. In this respect, since the image is taken outside the apparatus in the present embodiment, there is no risk of the photographing unit 73 being soiled by the ink mist.

Further, in the present embodiment, the nail printing device 2 has a jig arrangement portion 50 in which the fixing jig 6 is arranged so that the nail T is positioned at a predetermined position on the XY plane orthogonal to the height direction of the nail T. I have. Therefore, even if the fixing jig 6 to which the printing finger is fixed is taken out of the device and a picture is taken, the fixing jig 6 can be arranged at the correct position in the device when drawing, and the position shift or the like can be obtained. Does not cause the problem.

Further, in the present embodiment, the jig arranging portion 50 is provided with a flange portion 65 as a guide portion for guiding the fixing jig 6 to a predetermined position.
As a result, when the fixing jig 6 is set in the nail printing device 2, it can always be placed in an accurate position, and after taking a picture outside the device, the position of the fixing jig 6 in the device can be changed. Accurate settings can be made without having to reconfirm.

Although the embodiments of the present invention have been described above, it goes without saying that the present invention is not limited to such embodiments and can be variously modified without departing from the gist thereof.

For example, in the present embodiment, the fixing jig 6 in which the printing finger U1 is fixed is photographed from the tip end side of the nail T, the first image including the first reference mark F1 and the nail T, and the printing finger. The case where the fixing jig 6 in which the U1 is fixed is photographed from the upper surface side of the claw T and the second image including the second reference mark F2 and the claw T is acquired by the photographing unit 73 will be described as an example. However, it is not essential in the present invention to obtain a second image for identifying the nail region.
Only the first image for detecting the three-dimensional shape (curved shape) in the height direction of the nail, which is difficult to detect only by taking a plane image from directly above the nail T, is captured by the photographing unit 73 of the terminal device 7 outside the device. The acquisition and identification of the nail area may be performed, for example, by taking a picture with a camera in the device, providing a sensor or the like on the portion on which the finger is placed, and grasping the arrangement position of the nail T or the like. ..

Further, in the present embodiment, the case where the design storage unit 822 for storing the image data of the nail design is provided in the storage unit 82 of the terminal device 7 is illustrated, but the image data of the nail design is stored in the storage unit 7 of the terminal device 7. Not limited to when stored in.
For example, the image data of the nail design may be stored in a server device or the like that can be connected via a network line or the like, and the image data of the nail design may be made visible by accessing the server device or the like.
By doing so, it becomes possible to select the design to be drawn from among more nail designs.

Further, in the present embodiment, the drawing head 41 of the nail printing device (drawing device) 1 is provided with an inkjet drawing head 41, but the configuration of the drawing head 41 is not limited to this.
For example, a pen holder for holding a drawing pen for drawing with a pen tip attached to the surface of the nail T may be provided, and drawing may be performed using the pen. Further, a configuration may be configured in which both an inkjet drawing head and a pen holder for holding a drawing pen as in the present embodiment are provided, and drawing is performed using a plurality of drawing means.

Further, the nail printing device 2 may be provided with a drying portion provided with a heater or a fan for drying the ink after drawing.

Further, in the present embodiment, the nail printing device 2 is provided with the display unit 23, but the display unit 72 on the terminal device 7 side displays various images and instructions / messages to the user. If this is the case, the nail printing device 2 may not be provided with the display unit 23.
In this case, the nail printing device 2 can be cheaper and has a simpler configuration.

Further, in the present embodiment, the case where the claw T of the printing finger U1 is fixed to the fixing jig 6 to perform shooting and drawing processing is illustrated, but the object that can be drawn in this drawing system is the claw T of the printing finger U1. Not limited.
For example, even a nail-like shape such as a nail tip used by being attached to a nail T can be a "nail" that can be drawn by a drawing system.

Although some embodiments of the present invention have been described above, the scope of the present invention is not limited to the above-described embodiments, but includes the scope of the invention described in the claims and the equivalent scope thereof. ..
The inventions described in the claims originally attached to the application of this application are added below. The claims in the appendix are as specified in the claims originally attached to the application for this application.
[Additional Notes]
<Claim 1>
The drawing part that draws on the nails and
It is removable to the main body of the device, and is configured so that the printing finger, which is a finger having a nail to be drawn by the drawing unit, can be fixed so that the nail is exposed from the toe side, and is attached to the outer end surface of the toe side. A fixing jig on which the first reference mark, which is a reference in the height direction of the nail, is installed, and
With a drawing device
With the shooting department
From the first image including the first reference mark and the nail taken by the photographing unit from the tip end side of the nail, the printing finger fixed to the fixing jig, the first reference mark. A detection processing unit that detects the position of the nail and the position of the upper surface of the nail, and detects the curved shape of the nail in the width direction of the nail based on the detection result.
A drawing data generation unit that generates drawing data with curved surface correction according to the curved shape of the nail in the nail width direction based on the detection result by the detection processing unit.
With a terminal device equipped with
Drawing system with.
<Claim 2>
The drawing system according to claim 1, wherein the first reference mark is a rectangular or linear mark extending in the nail width direction.
<Claim 3>
A second reference mark, which serves as a reference for setting a drawing area by the drawing unit, is installed on the fixing jig.
From the second image including the second reference mark and the nail, the detection processing unit captures the printing finger fixed to the fixing jig from the upper surface side of the nail by the photographing unit. The position of the second reference mark and the area of the nail are detected,
The drawing system according to claim 1 or 2, wherein the drawing data generation unit sets a drawing area by the drawing unit from the detection result by the detection processing unit, and generates drawing data corresponding to the drawing area.
<Claim 4>
The drawing according to any one of claims 1 to 3, wherein the photographing unit in the terminal device photographs the fixing jig in a state where the printing finger is fixed outside the main body of the drawing device. system.
<Claim 5>
The drawing device is characterized by comprising a jig arranging portion in which the fixing jig is arranged so that the claw is positioned at a predetermined position on an XY plane orthogonal to the height direction of the claw. The drawing system according to any one of items 1 to 4.
<Claim 6>
The drawing system according to any one of claims 1 to 5, wherein the jig arranging portion is provided with a guide portion for guiding the fixing jig to the predetermined position.
<Claim 7>
It is a drawing device
The drawing part that draws on the nails and
It is removable to the main body of the device, and is configured so that the printing finger, which is a finger having a nail to be drawn by the drawing unit, can be fixed so that the nail is exposed from the toe side, and is attached to the outer end surface of the toe side. A fixing jig on which the first reference mark, which is a reference in the height direction of the nail, is installed, and
With
Curved shape in the nail width direction of the nail from the position of the first reference mark and the upper surface position of the nail acquired by photographing the fixing jig with the printing finger fixed outside the main body of the apparatus. A drawing device capable of communicating with a terminal device that detects
<Claim 8>
A drawing unit that draws on the nail and a printing finger that is detachably configured with respect to the device body and has a nail to be drawn by the drawing unit can be fixed so that the nail is exposed from the toe side. Communication is possible between a drawing device provided with a fixing jig configured and having a first reference mark as a reference in the height direction of the nail on the outer end surface on the toe side.
With the shooting department
From the first image including the first reference mark and the nail obtained by photographing the printing finger fixed to the fixing jig from the tip end side of the nail by the photographing unit, the first reference mark A detection processing unit that detects the position and the position of the upper surface of the nail and detects the curved shape of the nail in the nail width direction based on the detection result.
A drawing data generation unit that generates drawing data with curved surface correction according to the curved shape of the nail in the nail width direction based on the detection result by the detection processing unit.
A terminal device comprising.

1 Drawing system 2 Nail printing device 6 Fixing jig 7 Terminal device 40 Drawing unit 41 Drawing head 50 Jig placement unit 51 Top plate 53 Finger mounting stand 73 Imaging unit 81 Control unit 511 Notch unit 512 Flange unit 814 Detection processing unit 815 Drawing data generator T Claw U1 Printing finger

Claims (8)

The drawing part that draws on the nails and
It is removable to the main body of the device, and is configured so that the printing finger, which is a finger having a nail to be drawn by the drawing unit, can be fixed so that the nail is exposed from the toe side, and is attached to the outer end surface of the toe side. A fixing jig on which the first reference mark, which is a reference in the height direction of the nail, is installed, and
With a drawing device
With the shooting department
From the first image including the first reference mark and the nail taken by the photographing unit from the tip end side of the nail, the printing finger fixed to the fixing jig, the first reference mark. A detection processing unit that detects the position of the nail and the position of the upper surface of the nail, and detects the curved shape of the nail in the width direction of the nail based on the detection result.
A drawing data generation unit that generates drawing data with curved surface correction according to the curved shape of the nail in the nail width direction based on the detection result by the detection processing unit.
With a terminal device equipped with
Drawing system with. The drawing system according to claim 1, wherein the first reference mark is a rectangular or linear mark extending in the nail width direction. A second reference mark, which serves as a reference for setting a drawing area by the drawing unit, is installed on the fixing jig.
From the second image including the second reference mark and the nail, the detection processing unit captures the printing finger fixed to the fixing jig from the upper surface side of the nail by the photographing unit. The position of the second reference mark and the area of the nail are detected,
The drawing system according to claim 1 or 2, wherein the drawing data generation unit sets a drawing area by the drawing unit from the detection result by the detection processing unit, and generates drawing data corresponding to the drawing area. The drawing according to any one of claims 1 to 3, wherein the photographing unit in the terminal device photographs the fixing jig in a state where the printing finger is fixed outside the main body of the drawing device. system. The drawing device is characterized by comprising a jig arranging portion in which the fixing jig is arranged so that the claw is positioned at a predetermined position on an XY plane orthogonal to the height direction of the claw. The drawing system according to any one of items 1 to 4. The drawing system according to any one of claims 1 to 5, wherein the jig arranging portion is provided with a guide portion for guiding the fixing jig to the predetermined position. It is a drawing device
The drawing part that draws on the nails and
It is removable to the main body of the device, and is configured so that the printing finger, which is a finger having a nail to be drawn by the drawing unit, can be fixed so that the nail is exposed from the toe side, and is attached to the outer end surface of the toe side. A fixing jig on which the first reference mark, which is a reference in the height direction of the nail, is installed, and
With
Curved shape in the nail width direction of the nail from the position of the first reference mark and the upper surface position of the nail acquired by photographing the fixing jig with the printing finger fixed outside the main body of the apparatus. A drawing device capable of communicating with a terminal device that detects A drawing unit that draws on the nail and a printing finger that is detachably configured with respect to the device body and has a nail to be drawn by the drawing unit can be fixed so that the nail is exposed from the toe side. Communication is possible between a drawing device provided with a fixing jig configured and having a first reference mark as a reference in the height direction of the nail on the outer end surface on the toe side.
With the shooting department
From the first image including the first reference mark and the nail obtained by photographing the printing finger fixed to the fixing jig from the tip end side of the nail by the photographing unit, the first reference mark A detection processing unit that detects the position and the position of the upper surface of the nail and detects the curved shape of the nail in the nail width direction based on the detection result.
A drawing data generation unit that generates drawing data with curved surface correction according to the curved shape of the nail in the nail width direction based on the detection result by the detection processing unit.
A terminal device comprising.

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