JP6500529B2 - Drawing apparatus and drawing method - Google Patents

Description

  The present invention relates to a drawing apparatus and a drawing method of the drawing apparatus.

BACKGROUND Conventionally, a drawing device for drawing a nail design on a nail is known (see, for example, Patent Document 1).
By using such a device, it is possible to enjoy nail design easily without using a nail salon or the like.

By the way, when drawing a nail design by a drawing device, a plurality of processes such as application of a base, drawing of a design, application of a top coat are performed to draw a desired nail design on a nail. At this time, it is also assumed that a finger is removed from the drawing apparatus for the purpose of, for example, drying the drawn ink between each process.
As described above, when the finger is repeatedly extracted and inserted from the drawing device between the steps, it is difficult to fix the nail at the same position between the steps.
Therefore, each time a finger is inserted into the device, the nail area is detected, the relative position between the nail and the device is measured, and drawing is performed while correcting the drawing data according to the result. It is necessary to suppress the deviation of the drawing position between processes.

Even if a mechanism for drying the ink drawn on the nail is provided in the device and it is not necessary to insert and remove the finger between each process, the finger moves in the device while drying the ink, etc. There is also a risk of
For this reason, even in the case of an apparatus configuration capable of nail printing without removing and inserting fingers from the start to the end of drawing, it is necessary to appropriately redetect the nail area when moving to the next drawing step after the end of drying.

Japanese Patent Publication No. 2003-534083

However, when the drawing process proceeds and the design etc. is drawn on the nail, due to the drawn design etc., a range different from the nail area in the initial state detected before the start of drawing is the nail area For example, the detection accuracy of the nail area may be lowered.
As described above, when a shift occurs in the range detected as the nail region, the drawing process after the detection may also draw on the region other than the nail, and the finger may be soiled.
In addition, if a different range is detected as a nail area between the steps, the design to be drawn may be deviated from the position to be originally drawn, which may result in a beautiful finish.

  An object of the present invention is to provide a drawing apparatus and a drawing method of the drawing apparatus capable of improving detection accuracy of a nail area with a simple configuration.

In order to solve the above-mentioned subject, the drawing device of the present invention is
In a drawing device for drawing on a fingernail,
The area of the finger adjacent to the nail according to the nail area at the time of non-masking, which is the area of the nail detected based on the image acquired by photographing the nail when the masking portion is not formed on the finger based on the image obtained by photographing a masking unit masking agent is formed by applying a nail region detection unit that detects a region of the nail in the finger during the masking as a masking during the nail area, during the masking And a drawing unit that performs drawing on the area of the nail according to the nail area .

  According to the present invention, in the drawing device, the detection accuracy of the nail area can be improved with a simple configuration.

It is a front view of the drawing apparatus in this embodiment. FIG. 2 is a side cross-sectional view showing an internal configuration with a part of the drawing device shown in FIG. 1 being a cross-section. It is a principal part block diagram showing control composition of a drawing device concerning this embodiment. (A) is a plan view of a finger showing a state in which a nail area is detected from a printing finger, (b) is a plan view of a finger showing a state in which a masking portion is formed around the nail area; ) Is a plan view of a finger showing a state in which a design image is drawn in a nail area, and (d) is a plan view of a finger showing a state in which a masking portion is peeled from a printing finger. It is a flowchart which shows the drawing process in this embodiment. It is a flowchart which shows the drawing process in this embodiment. (A) And (b) is a top view which shows an example of the masking part which provided the characteristic part. (A) is a front view of one modification of the drawing apparatus in this embodiment, (b) is a side view which shows the internal structure of the drawing apparatus shown by (a).

Hereinafter, an example of an embodiment of a drawing apparatus and a drawing method of the drawing apparatus according to the present invention will be described in detail with reference to the accompanying drawings. However, the scope of the invention is not limited to the illustrated example.
In the following embodiments, the drawing device is described as being drawn on the fingernail of a hand as a drawing object, but the drawing object of the present invention is not limited to the fingernail, for example, a foot The nail of the finger may be the drawing target.

FIG. 1 is a front view of a drawing apparatus, and FIG. 2 is a side view showing an internal structure of a part of the drawing apparatus shown in FIG.
As shown in FIGS. 1 and 2, the drawing device 1 is a hybrid type nail print device including a drawing head 41 and a writing tool 71 such as a pen, and is housed in the case main body 2 and the case main body 2. The apparatus main body 10 is provided. In FIGS. 1 and 2, the case body is indicated by a two-dot chain line.

At one end of the front upper portion of the case main body 2, a writing tool replacement lid 23 configured to be openable and closable for replacing a writing tool 71 of the drawing unit 40 described later is provided. The writing tool replacement lid 23 is pivotable from a closed state to an open state as shown in FIG. 2 through, for example, a hinge.
Furthermore, the drawing medium placed on the writing tool test writing section 61 at a position corresponding to the writing tool test writing section 61 which is one side of the case body 2 (in the present embodiment, the left side in FIG. 1) A media insert 24 is formed which can be replaced (not shown).

An operation unit 25 (see FIG. 3) is installed on the top surface (top plate) of the case body 2.
The operation unit 25 is an input unit through which the user performs various inputs.
The operation unit 25 includes, for example, a power switch button for turning on the drawing apparatus 1, a stop switch button for stopping the operation, a design selection button for selecting a design image to be drawn on the nail T, and a drawing start button for instructing drawing start. There are disposed operation buttons (not shown) for performing various inputs.

In addition, a display unit 26 is installed substantially at the center of the upper surface (top plate) of the case main body 2.
The display unit 26 is configured of, for example, a liquid crystal display (LCD), an organic electroluminescence display, and other flat displays.
In the present embodiment, for example, a finger image obtained by photographing the printing finger U1 (an image of the printing finger U1 including the image of the nail T), and an outline of the nail T included in the finger image An image such as a line, a design selection screen for selecting a design image to be drawn on the nail T, a thumbnail image for design confirmation, an instruction screen for displaying various instructions, and the like are appropriately displayed.
A touch panel may be integrally formed on the surface of the display unit 26. In this case, for example, various selections and instructions can be performed by touching the touch panel surface with a fingertip or the like. In addition to the finger, various inputs can be performed by a touch operation of touching the surface of the display unit 26 with, for example, a stylus pen, a pointed rod-like writing instrument, or the like.

  The apparatus body 10 is formed substantially in a box shape, and is provided with a lower machine frame 11 installed below the inside of the case body 2 and an upper machine installed above the lower machine frame 11 and above the inside of the case body 2. And a frame 12.

First, the lower machine casing 11 will be described.
The lower machine casing 11 has a back plate 111, a bottom plate 112, a pair of left and right side plates 113a and 113b, an X-direction movement stage accommodation unit 114, a Y-direction movement stage accommodation unit 115, and a partition 116.
The lower ends of the side plates 113a and 113b are respectively connected to the left and right ends of the bottom plate 112, and the side plates 113a and 113b are provided in a state of being erected with respect to the bottom plate 112.
As shown in FIG. 2, the lower portion of the back plate 111 is formed to be recessed in two steps toward the front (the front side in the finger insertion direction). The lower end portion of the back plate 111 is connected to the front end portion of the bottom plate 112, and the back plate 111 divides the area surrounded by the bottom plate 112 and the side plates 113a and 113b into the front and back.
A space formed on the rear side of the recessed back plate 111 is an X-direction movement stage storage part 114 and a Y-direction movement stage storage part 115 (see FIG. 2). The X-direction movement stage 45 of the drawing unit 40 is accommodated in the X-direction movement stage accommodation unit 114 when the drawing unit 40 (see FIG. 2) is moved forward (toward the finger insertion direction). Further, in the Y-direction movement stage storage unit 115, the Y-direction movement stage 47 of the drawing unit 40 is disposed.
The lower partition 11 divides the space on the inner front side of the lower casing 11 (the space on the front side in the finger insertion direction surrounded by the back plate 111, the bottom plate 112 and the side plates 113a and 113b) into upper and lower sections. Provided inside the The partition 116 is provided substantially horizontally, the left and right ends of the partition 116 are respectively connected to the side plates 113a and 113b, and the rear end of the partition 116 is connected to the back plate 111.

A finger fixing portion 30 is integrally provided on the lower machine casing 11.
The finger fixing unit 30 will be described with reference to FIG.
FIG. 3 is a cross-sectional view of an essential part schematically showing the configuration of the finger fixing portion 30 and the periphery thereof.

The finger fixing unit 30 is a finger receiving unit 31 for receiving a finger corresponding to a nail T to be drawn (hereinafter referred to as a “printing finger U1”) which is a drawing object, and a printing finger other than the drawing finger U1 not to be drawn. And a finger retracting unit 32 for retracting the finger (hereinafter referred to as "non-printing finger U2").
The finger receiving portion 31 is disposed on the upper side of the partition wall 116 and substantially at the center of the lower machine casing 11 in the width direction. In addition, a space divided below the lower machine casing 11 by the partition wall 116 constitutes a finger evacuation unit 32.
For example, when drawing on the nail T of the ring finger, as shown in FIG. 2, the ring finger as the printing finger U1 is inserted into the finger receiving unit 31, and the other four fingers (thumb, forefinger , Middle finger and little finger) are inserted into the finger retracting portion 32.
The finger receiving portion 31 is opened on the front side (the front side in the printing finger insertion direction) of the lower machine frame 11, and the lower side does not show the finger placement portion 116a that constitutes a part of the partition 116, both sides and the back side It is divided by a partition. The finger placement unit 116a has a placement surface (XY plane), and places the finger (printing finger U1) of the nail T to be drawn on the placement surface.
The upper side of the finger receiving unit 31 is a ceiling, and an opening for exposing the nail T of the printing finger U1 inserted in the finger receiving unit 31 is formed in the ceiling.

On the placement surface of the finger placement unit 116a, a finger holding unit 33 is disposed which holds the printing finger U1 inserted in the finger receiving unit 31 from the lower side. The finger holding unit 33 may be configured to be capable of moving up and down by a mechanism not shown. In this case, when the printing finger U1 is inserted into the finger receiving unit 31 or taken out from the inside of the finger receiving unit 31, the finger holding unit 33 is lowered to a height that does not hinder the insertion and removal of the printing finger U1. When the printing finger U1 is fixed, the finger holding unit 33 is lifted so that the printing finger U1 is pushed up to a position where the upper surface of the printing finger U1 abuts on the lower surface of the ceiling 31d.
Further, in the finger receiving portion 31, there is provided a nail rest 34 which protrudes from the back side partition, and in a state where the printing finger U1 is pushed up by the finger holding portion 33, the tip end of the nail T It is supposed to get on the platform 34. Thereby, the position in the height direction of nail | claw T is fixed.
Note that the finger holding unit 33 and the nail rest 34 are not essential components of the drawing device, and may not be provided.

Further, a front wall 31 f (see FIG. 1) for closing the front side of the lower machine casing 11 is erected on the upper surface of the partition wall 116 and on both sides of the front side of the lower machine casing 11. Further, on the upper surface of the partition wall 116, a pair of guide walls 31g narrowing from the end close to the central part of the front wall 31f toward the finger receiving portion 31 and guiding the printing finger U1 into the finger receiving portion 31 It is set up.
The user can hold the partition 116 between the printing finger U1 inserted in the finger receiving unit 31 and the non-printing finger U2 inserted in the finger retraction unit 32. Therefore, the printing finger U1 inserted into the finger receiving unit 31 is stably fixed.
In the present embodiment, a protruding portion 116 b that protrudes downward is formed at the front end portion of the partition wall 116. The thickness of the protrusion 116 b gradually decreases toward the front side, and may be a tapered portion that gradually increases toward the back side. The thickness of the protrusion 116 b corresponds to the depression on the back side of the partition wall 116. On the other hand, the entire structure may be thick. The protrusion 116b is formed at the front end of the partition 116, so that when the non-printed finger U2 is inserted into the finger retraction unit 32, a space is secured between the claw T of the drawn finger and the partition 116. It is possible to prevent the nail T from coming into contact with the lower surface of the partition wall 116 and causing the ink to adhere to the apparatus side, and the picture drawn on the nail T to be rubbed and damaged.

An area on the upper surface of the partition wall 116 and next to the finger receiving unit 31 (a position corresponding to the medium insertion port 24 of the case body 2 and in the present embodiment, the left side in FIG. 1) 41 and a writing instrument 71 are in a standby area.
In the home area, a writing tool test writing section 61, a writing tool cap 62 and a head cap mechanism 43 are provided.

The writing instrument test writing section 61 is used to write in the writing instrument 71 described later, and is disposed within the range in which the writing instrument 71 can draw.
The writing instrument test writing portion 61 is a flat plate-like portion, and a drawing medium (not shown) inserted from the medium insertion port 24 of the case main body 2 described above is placed thereon.
The drawing medium to be placed on the writing instrument test writing section 61 may be any medium as long as it can change the pen point 712, and is, for example, a piece of paper.
Preferably, the writing instrument test writing section 61 is provided at a height which is substantially the same as the height of the nail T when the printing finger U1 is inserted into the finger receiving section 31.

  The writing tool test writing section 61 is used for the drawing medium before the drawing by the image data is started on the nail T in order to prevent the writing start from being faded due to the pen point 712 being dry or the ink riding badly. The drawing tool 71 is lowered to draw a predetermined figure such as "o" or ".infin." And write-in, thereby making the state of the pen point 712 favorable. There are no particular limitations on the predetermined figure to be drawn when performing break-in, but it is preferable that the figure is a simple figure such as "o" or ".infin." So as not to waste ink excessively. In this practice writing, it is preferable to write in the range of the writing instrument practice writing unit 61 while gradually shifting the position for drawing a predetermined figure such as “○” or “∞” each time the practice writing is performed. . When the image has been written on almost the entire surface of the medium to be drawn, a display screen prompting the user to change the medium to be drawn, such as “Please change paper”, is displayed on the display unit 26. In this case, the user can take out the drawing medium from the medium insertion port 24 and replace it with a new one so that a new writing medium can be written in. If the drawing medium is roll paper, when the drawing space is exhausted, the drawing medium is fed from the roll paper so that the new drawing surface can be used for break-in.

The writing tool cap 62 accommodates the writing tool 71 (in particular, the pen tip 712 of the writing tool 71) when the writing tool 71 is attached to the drawing unit 40 and drawing is not performed (at the time of non-drawing). It is formed of rubber or the like.
In the present embodiment, the writing instrument cap 62 is disposed in front of the writing instrument test writing unit 61 (in front of the finger insertion direction). The writing tool caps 62 are provided by the number (four in the present embodiment) corresponding to the writing tools 71 attached to the drawing unit 40.
At the time of non-drawing, after the writing instrument 71 is moved right above the writing instrument cap 62, the writing instrument 71 is lowered by a solenoid 742 described later, and the pen point 712 is accommodated in the writing instrument cap 62. This makes it possible to prevent the nib 712 from drying out during non-drawing. The shape and the like of the writing tool cap 62 is not limited to the illustrated example, and is, for example, a long groove-like writing tool cap and the like which can receive the pen tips 712 of all the writing tools 71 mounted on the drawing unit 40 It is also good.
In the present embodiment, since the writing instrument cap 62 is thus provided beside the writing instrument test writing section 61, when the drawing is started, the writing instrument 71 is raised and the writing instrument test writing section 61 immediately by the side. You can break in and start drawing. For this reason, the time taken for the movement of the writing instrument 71 can be minimized, and a quick drawing operation can be performed.

Further, the head cap mechanism 43 covers the ejection surface of the drawing head 41 at the time of non-drawing. The head cap mechanism 43 is disposed on the partition wall 116 at a position corresponding to the position where the drawing head 41 is disposed when the writing instrument 71 is accommodated in the writing instrument cap 62.
By providing the head cap mechanism 43 and covering the discharge surface of the drawing head 41 at the time of non-drawing, drying of the drawing head 41 at the time of non-drawing can be prevented.

The drawing unit 40 performs drawing on the nail T based on the image data of the selected design image using a plurality of types of ink, and in the present embodiment, a writing tool including the drawing head 41 and the writing tool 71 which are drawing tools. A carriage 42 on which a unit 72 is mounted is provided.
The carriage 42 is attached to the carriage support member 44, whereby the drawing head 41 and the writing instrument unit 72 are supported by the carriage support member 44 via the carriage 42.
The drawing unit 40 includes an X-direction moving stage 45 for moving the carriage 42 in the X direction (the X direction in FIG. 1, the horizontal direction of the drawing apparatus 1), in addition to the carriage 42 and the carriage supporting member 44 supporting the same. A direction moving motor 46, a Y direction moving stage 47 for moving the carriage 42 in the Y direction (the Y direction in FIG. 2, the longitudinal direction of the drawing apparatus 1), a Y direction moving motor 48, and the like are provided.

The drawing head 41 is an ink jet drawing tool that applies ink on a surface of the nail T, which is a liquid material, onto the surface of the nail T, which is the drawing target surface, and performs drawing on the surface of the nail T. In addition, the structure and method in which the drawing head 41 sprays and applies the ink are not particularly limited.
The drawing head 41 according to the present embodiment is an integrated cartridge in which an ink tank is integrated, and a plurality of ink chambers (ink storage unit, not shown) which are individually partitioned are provided in each of the interiors. In the ink chamber, for example, C, M, and Y three-color inks are filled as liquid materials for drawing a design.
In addition, the kind and number of ink (liquid material) are not limited to what was illustrated here.

Furthermore, in the present embodiment, any ink chamber of the drawing head 41 is filled with a liquid masking agent for forming the masking portion M around the nail area.
Since the masking agent is directly applied to the skin, it is preferable that the masking agent has as little influence as possible on the human body, and it is resistant to the ink used for drawing on the nail T and can function as a masking. is there. Specifically, for example, a PVA-based masking sol can be used as a masking agent.
The masking agent has a color different from the color used in the design drawn by the drawing head 41 or the writing tool 71 which is a drawing tool so that detection by the nail information detection unit 812 described later is easy. preferable.
In addition, the masking agent is preferably a color that can be clearly distinguished from the color of the nail T, the skin of the finger, etc. For example, HSV color space (HSV model, that is, saturation, chroma, lightness) (Color space consisting of three components (Value, Lightness, Brightness)), etc., having a color (for example, blue, green, etc.) positioned as far as possible from the nail color or skin color Is preferred.
Furthermore, it is preferable that the masking agent is in the form of a film in a dried state after being applied in a liquid state. By using the masking agent which becomes filmy when dried, the entire masking portion M is in the form of a film, which can be easily peeled off, and the masking portion M is completed after all the drawing process is completed. Can be removed easily.

On the lower surface of the drawing head 41 (the surface facing the finger placement portion 116a when the drawing head 41 is mounted on the carriage 42), discharge ports for discharging the ink of each color filled in the ink chamber are formed A discharge surface (not shown) is provided.
The drawing head 41 includes an ink ejection unit 411 for ejecting ink from the ejection port on the ejection surface. The ink ejection unit 411 is configured of, for example, a piezo element (not shown) as an actuator.
The carriage 42 is provided with a head drive circuit board (not shown) for driving the drawing head 41. When the drawing head 41 is mounted on the carriage 42, the connector (not shown) on the drawing head 41 side is a head The ink discharger 411 is electrically connected to the control circuit 80 through the head drive circuit board. Thus, under the control of a drawing control unit 815 (see FIG. 3) described later, a drive voltage is applied to the piezoelectric elements that constitute the ink ejection unit 411, and the piezoelectric elements are not illustrated because they are deformed or vibrated by the application of the voltage. The ink flow path is compressed, and the ink is discharged from the discharge port of the discharge surface.

The writing tool unit 72 includes at least one writing tool 71 which is a drawing tool for drawing on the nail T of the printing finger U1. The writing instrument 71 is held by the writing instrument holder 73.
In the present embodiment, the writing tool unit 72 includes four writing tool holding portions 73 (described later) each holding the writing tool 71. In addition, the number, the shape, and the like of the writing instrument holding portion 73 are not limited to the illustrated example.
The writing instrument 71 can be appropriately replaced by opening the above-described writing instrument replacement lid 23. The writing instrument 71 may be attached to all the writing instrument holders 73 or may be attached to only a part of the four writing instrument holders 73.

The writing instrument 71, which is a drawing tool, applies ink, which is a liquid material, to the surface of the nail T to perform drawing.
The writing instrument (drawing tool) 71 held by each writing instrument holder 73 is provided with a pen tip 712 on the tip end side of the pen shaft 711. The inside of the pen shaft 711 is an ink storage unit for storing various types of ink. The ink contained in the inside of the pen shaft 711 is not particularly limited in viscosity, particle diameter of particle (size of particles), etc. For example, gold-silver ink, white ink, UV curing type Inks, gel nails, undercoats, top coats, manicures, etc. can also be used.

The writing instrument 71 is, for example, a pen whose pen tip 712 is a ballpoint pen type in which the ink contained in the pen shaft 711 exudes and draws when the pen tip 712 is pressed against the surface of the nail T. The writing instrument 71 is not limited to a ballpoint pen type, for example, a pen type that draws ink into a felt-like pen tip to draw, a brush pen type that draws a bundle of hair to soak ink, etc. It may be Also, various thicknesses of the pen point 712 can be prepared.
The writing instrument 71 held in each writing instrument holder 73 may be a pen having a pen tip 712 of the same type, or may be a writing instrument having a pen tip 712 of a different type.

  In the present embodiment, four writing tool holding portions 73 for holding the writing tool 71 are arranged in the width direction (left and right direction, X direction in FIG. 1) of the device, so the position of the pen point 712 is the X direction Although the shift is in the horizontal direction), this shift is an integral multiple of one step in the drawing operation, and the drawing is performed by correcting the number of steps corresponding to the deviation according to the writing tool 71 used for drawing The four writing instruments 71 can draw at the same position.

Each writing instrument holder 73 is provided with a writing instrument holder 731 which is a cylindrical portion for holding the writing instrument 71 substantially vertically. The writing instrument holder 731 moves the writing instrument 71 up and down by the cooperation of the spring 741 and the solenoid 742 while holding the writing instrument 71 substantially vertically. Specifically, in a state where the solenoid 742 is driven, the writing instrument 71 descends against the biasing force of the spring 741 to be in a drawing state capable of contacting the surface of the nail T to be drawn and the drawing medium . When the solenoid 742 is open, the writing tool 71 is lifted by the biasing force of the spring 741 and is not in contact with the surface of the nail T or the drawing medium.
In the present embodiment, although the solenoid 742 is used as an actuator for moving the writing tool 71 up and down, the actuator for moving the writing tool 71 up and down is not limited to the solenoid 742. Since the writing instrument 71 is lightweight, in addition to the solenoid, an actuator for moving the writing instrument 71 up and down can be configured by various small drive devices.

The carriage support member 44 that supports the carriage 42 is fixed to an X-direction moving unit 451 attached to the X-direction moving stage 45. The X direction moving unit 451 moves the X direction moving stage 45 in the X direction along a guide (not shown) by driving the X direction moving motor 46, whereby the carriage 42 is moved in the X direction (see FIG. In the X direction in the left and right direction of the drawing apparatus 1).
Further, the X-direction movement stage 45 is fixed to the Y-direction movement portion 471 of the Y-direction movement stage 47. The Y-direction moving unit 471 moves the Y-direction moving stage 47 in the Y direction along a guide (not shown) by driving the Y-direction moving motor 48, whereby the carriage 42 is moved in the Y direction (FIG. 2). In the Y direction in FIG. 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). As the X-direction moving motor 46 and the Y-direction moving motor 48 of the present embodiment, a step motor which moves a predetermined amount each time one pulse is sent is applied.
In the present embodiment, the carriage moving unit 49 (see FIG. 3) drives the carriage 42 provided with the writing tool 71 for drawing on the nail T by the X direction moving motor 46, the Y direction moving motor 48, and the like. It is configured.

  The ink ejection unit 411 of the drawing head 41 in the drawing unit 40, the solenoid 742 for moving the writing tool 71 up and down, the X direction movement motor 46, and the Y direction movement motor 48 are the drawing control unit 815 of the control device 80 described later. (See reference) and controlled by the drawing control unit 815.

As shown in FIGS. 1 and 2, the photographing unit 50 is provided on the upper machine casing 12.
That is, the substrate 13 is installed on the upper machine casing 12, and for example, two cameras 51 as imaging devices are installed on the lower surface of the central portion of the substrate 13. It is preferable that the camera 51 has a pixel of about 2 million pixels or more, for example.
The camera 51 captures the nail T of the printing finger U1 inserted in the finger receiving unit 31, and obtains a finger image including a nail image that is an image of the nail T of the printing finger U1.
In the present embodiment, the two cameras 51 are provided substantially in the width direction of the nail T of the printing finger U1 inserted in the finger receiving unit 31. Of the two cameras 51, one camera 51 is provided to face the bottom surface of the finger receiving unit 31, and shoots the nail T from directly above. The other camera 51 is disposed so as to be slightly inclined with respect to the bottom surface of the finger receiving unit 31, and captures an image of the nail T from an obliquely upper direction.
Further, on the substrate 13, a lamp (illumination device) 52 such as a white LED is installed so as to surround the camera 51. The illumination light 52 illuminates the nail T of the printing finger U1 at the time of photographing by the camera 51. The photographing unit 50 is configured to include the camera 51 and the illumination light 52.
The photographing unit 50 is connected to a photographing control unit 811 (see FIG. 3) of a control device 80 described later, and is controlled by the photographing control unit 811.
Image data of an image captured by the imaging unit 50 is stored in a nail image storage area 821 of the storage unit 82 described later.

In the present embodiment, the nail T can be photographed from at least two different positions and angles by two cameras 51 as imaging devices, and at least two nail images are acquired.
Then, based on these nail images, in addition to the outline of the nail T (shape of the nail T), the nail information detection unit 812 described later has an inclination angle with respect to the mounting surface of the surface of the nail T in the width direction of the nail T. It is possible to detect nail information such as a value corresponding to (hereinafter also referred to as “nail curvature”) and the vertical position of the nail T. That is, for example, by capturing an image from right above the nail T and an image from the diagonally upward direction of the nail T, not only the contour of the nail T but also the position and the inclination angle of the surface of the nail T (nail curvature Can be accurately detected.
It is not essential to provide two cameras 51 as an imaging device and to be able to detect the inclination angle (nail curvature) of the nail T, and only one camera 51 is provided, and the nail T is only upward Alternatively, the contour of the nail T (the shape of the nail T) may be detected as nail information.

Further, the control device 80 is installed, for example, on a substrate 13 or the like disposed on the upper machine casing 12.
FIG. 3 is a principal block diagram showing a control configuration in the present embodiment.
As shown in FIG. 3, the control device 80 includes a control unit 81 configured by a central processing unit (CPU) (not shown), a read only memory (ROM), a random access memory (RAM), etc. (all not shown) And a storage unit 82 configured by

The storage unit 82 stores various programs for operating the drawing apparatus 1, various data, and the like.
Specifically, in the ROM of the storage unit 82, a nail information detection program for detecting nail information such as the shape and position of the nail T and the nail area of the nail T from a finger image, drawing for generating drawing data A variety of programs such as a data generation program and a drawing program for performing drawing processing are stored, and when these programs are executed by the control device 80, each part of the drawing apparatus 1 is integrally controlled. There is.
Further, in the present embodiment, the storage unit 82 stores a nail image storage area 821 for storing an image of the nail T of the print finger U1 of the user acquired by the photographing unit 50 (finger image including the image of the nail T) nail information A nail information storage area 822 for storing nail information detected by the detection unit 812 and a design storage area 823 for storing image data of a design image drawn on the nail T are provided.

Furthermore, in the present embodiment, the storage unit 82 also stores information on the range in which the masking unit M is formed, the shape of the masking unit M, and the like.
Although the range and shape in which the masking portion M is formed is not particularly limited, for example, in order to prevent the ink from adhering to the skin even when the ink ejected from the drawing head 41 is misted and scattered, etc. It is preferable to apply to the right and left of the nail T and the part adjacent to the lower root part of the nail T from the skin area of the finger outside the nail area to the boundary between the nail T and the skin of the finger. Therefore, for example, masking is performed such that a portion from the boundary between the area detected as the nail area of the nail T and the outside of the nail area to the outside by a predetermined range is the masking portion M in the area outside the nail area of the finger. The formation range of the part M is set. As a result, as shown in FIG. 4B and the like, the masking portion M is formed to surround the nail region in a U-shape.

  The control unit 81 functionally includes a photographing control unit 811, a nail information detection unit 812, a drawing data generation unit 813, a display control unit 814, a drawing control unit 815 and the like. The functions as the photographing control unit 811, the nail information detection unit 812, the drawing data generation unit 813, the display control unit 814, the drawing control unit 815 and the like are the programs stored in the CPU of the control unit 81 and the ROM of the storage unit 82. It is realized by the cooperation of

The imaging control unit 811 controls the camera 51 and the illumination light 52 of the imaging unit 50 to cause the camera 51 to capture an image of the nail T of the printing finger U1 inserted in the finger receiving unit 31.
The imaging control unit 811 controls the camera 51 and the illumination light 52 of the imaging unit 50 to capture an image of the nail T of the print finger U1, and acquires a finger image including an image of the nail T.
Further, in the present embodiment, when the masking portion M is formed, the masking portion M is also used to detect the nail area. For this reason, the imaging control unit 811 controls the camera 51 to capture an image including the masking unit M provided around the nail T together with the nail T.

The nail information detection unit (nail area detection unit) 812 is configured to detect the nail T of the printing finger U1 based on the finger image (that is, the image of the printing finger U1 including the images of the nail T and the masking unit M) captured by the camera 51. For detecting nail information including the nail area.
Here, the nail information includes the shape and size of the outline of the nail T, the horizontal position of the nail T, the height of the nail T (position in the vertical direction of the nail T, hereinafter "vertical position of the nail T" or simply "nail (Also referred to as “position of T”), the inclination angle (nail curvature) of the nail T, and the nail information detection unit 812 detects the shape of the nail T, the position of the nail T, and the nail curvature of the nail T as nail information. . Here, the entire area formed by the contour of the nail T is taken as a nail area (drawing area).

Specifically, the nail information detection unit 812 detects the shape and size of the outline of the nail T and the position thereof from the finger image of the printing finger U1 acquired by the camera 51, and the outline of the outline is x and y coordinates. Acquired as information represented by etc.
In the present embodiment, the nail information detection unit 812 performs the first nail area detection after the formation of the masking unit M and before the first drawing by the drawing head 41 or the writing tool 71 which is a drawing tool, and drawing The second nail area detection is performed after the first drawing by the tool and before the second drawing by the drawing tool.

Here, "first drawing" means drawing performed in a state where nothing is drawn on the nail T, and "second drawing" means some drawing on the nail T (application of a base, design image Means the drawing to be performed after the drawing of.
The masking portion M is formed in a state where nothing is drawn on the nail T and the printing finger U1. That is, before the formation of the masking unit M, nothing is drawn yet on the nail T and the printing finger U1, and at this time, the nail information detection unit 812 is, for example, of the printing finger U1 acquired by the camera 51. From the finger image including the nail image of the nail T, the contour (shape) of the nail T is detected based on the color difference between the nail T and the other finger portion.
In addition, at the time of the first nail area detection and the second nail area detection performed after the formation of the masking unit M, the nail information detection unit 812 is, for example, the nail of the nail T of the printing finger U1 acquired by the camera 51. The contour (shape) of the nail T is detected from the finger image including the image based on the difference in color between the nail T and the masking unit M or the like. As described above, since the masking agent that forms the masking portion M has a color different from the color of the design applied to the nail T, the nail information detection portion 812 has a base, a design image, etc. Even after drawing, the nail area can be accurately detected. The first detection result of the nail area acquired by the first nail area detection and the second detection result of the nail area acquired by the second nail area detection are stored in the nail information storage area 822.
In the second nail area detection, for example, after the base is applied to the nail T as “first drawing” and the printing finger U1 is temporarily removed from the finger receiving unit 31 by, for example, drying the base, When the print finger U1 is inserted into the finger receiving unit 31 again, or after drawing of the design image, until the finish top coat is performed, the printing finger U1 is once removed from the finger receiving unit 31, and then the finger receiving unit 31 is again performed. When the printing finger U1 is inserted, or when the printing finger U1 is inserted and removed between the drawing steps, the process is performed before the next drawing step.
The information on the nail area stored as the second detection result in the nail information storage area 822 is newly updated each time the second nail area detection is performed and a new second detection result is acquired. Updated to information.
The method for the nail information detection unit 812 to detect the contour (shape) of the nail T in the first nail area detection is not particularly limited, and the invention is not limited to the above.
The nail information detection unit 812 may also detect the outline of the masking unit M in the first nail area detection and the second nail area detection, and the outline information of the masking unit M may also be stored in the storage unit 82.

In addition, the nail information detection unit 812 detects the nail height of the nail T based on the image of the nail T taken by the camera 51. Here, the nail height is the position of the nail T in the vertical direction.
Furthermore, the nail information detection unit 812 detects a nail curvature of the nail T based on the image of the nail T taken by the camera 51. The nail curvature is a value corresponding to the inclination angle of the surface of the nail T with respect to the mounting surface in the width direction of the nail T.
For example, by causing the camera 51 to photograph the nail T from two different angles, the nail information detection unit 812 can estimate the nail height and the nail curvature of the nail T from the change of the shadow appearing in the nail image.
In addition, the method in which the nail | claw information detection part 812 detects the nail | claw height and nail | claw curvature of nail | claw T is not specifically limited, It is not restricted to what was mentioned here.

The drawing data generation unit 813 generates drawing data to be applied to the nail T of the print finger U1 by the drawing unit 40 based on the nail information detected by the nail information detection unit 812.
Specifically, the drawing data generation unit 813 performs fitting processing (fitting processing) by reducing or enlarging the image data of the design image based on nail information such as the shape of the nail T detected by the nail information detection unit 812 ), And generates drawing data for drawing a design image on the nail T.

Further, the image data generation unit 813 of the present embodiment includes a drawing data correction unit 813 a that corrects the drawing data.
The drawing data correction unit 813 a corrects the drawing data of the design drawn by the drawing head 41 and the writing tool 71 which are drawing tools.
The drawing data correction unit 813a performs the first detection result of the nail area acquired by the first nail area detection by the nail information detection unit 812 and the second detection of the nail area acquired by the second nail area detection. Based on the result and the position movement amount of the nail area is calculated, the drawing data is corrected. For example, the position of the nail area, which is the second detection result, moves 1 mm to the right in the X direction (the right direction in FIG. 1, that is, the right direction of the drawing device 1) than the position of the nail area, which is the first detection result. If it is, the drawing data correction unit 813a corrects the drawing data so as to shift the drawing position to the right by 1 mm.

Specifically, in the present embodiment, the drawing data correction unit 813a is the second detection result and the nail area in the initial state (that is, the state in which nothing is drawn on the nail T) which is the first detection result. The position movement amount of the nail area is calculated by matching with the nail area.
Note that the nail area as the second detection result is matched not with the nail area in the initial state as the first detection result but with the nail area in the drawing state as the nearest second detection result, for example. The movement amount from the position of the nail area in the process may be calculated.
For example, in the case where one pattern is drawn using a plurality of colors, it is dried each time one line is drawn, and the next color is applied after being dried to gradually complete the pattern. By correcting the positional deviation from the previous drawing process, it is possible to draw a beautiful pattern without positional deviation.
The position and range of the masking unit M itself are also detected before each drawing process (ie, for example, base coating process, background color drawing process, pattern drawing process, top coat application process, etc.), and the detection results are stored. The position movement amount of the nail region may be calculated by storing in the unit 82 and matching the masking units M with each other to detect a positional deviation.
When ink of various colors is applied to the nail T during the drawing process, accurate detection results can not be obtained for the nail area in the second nail area detection, and matching between the nail areas is difficult. There is also a case.
Even in this case, the shape of the masking portion M (in particular, the shape of the outer edge portion of the masking portion M which is not easily affected by the drawing on the nail T) does not change. It is possible to calculate the quantity.
Then, the drawing data correction unit 813a corrects the drawing data based on the calculated positional movement amount. As a result, even if the position of the nail T is shifted in each drawing step, it is possible to perform drawing without positional deviation.

The drawing data correction unit 813a performs curved surface correction on drawing data for drawing on the nail T according to the curved shape of the nail T based on the nail curvature of the nail T detected by the nail information detection unit 812.
The nail information detection unit 812 may detect the curvature of the nail precisely for each nail T, and the drawing data correction unit 813a may precisely obtain the correction value of the curved surface correction according to this. The curved shape based on the nail curvature is classified into any of a plurality of preset curved patterns, and a correction value is prepared in advance for each classification in the drawing data correction unit 813a, and the curved patterns are classified. The curved surface correction of the drawing data may be performed by applying a correction value prepared correspondingly. In this case, the storage unit 82 stores predetermined correction values corresponding to the respective bending patterns. Curved surface correction can be performed simply and quickly by classifying the nail T into any of a plurality of curved patterns and performing curved surface correction using correction values prepared for each curved pattern.

  The display control unit 814 controls the display unit 26 to display various display screens on the display unit 26. In the present embodiment, the display control unit 814 is, for example, a design image selection screen, a thumbnail image for design confirmation, a finger image obtained by photographing the print finger U1, a nail image (image of nail T) included in the finger image An instruction screen or the like is displayed on the display unit 26.

The drawing control unit 815 outputs the drawing data of the design image generated after being appropriately corrected and curved surface corrected according to the positional movement amount of the nail T by the drawing data generation unit 813 to the drawing unit 40, and the nail T The X-direction moving motor 46, the Y-direction moving motor 48, which is the carriage moving unit 49 of the drawing unit 40, the ink ejection unit 411 of the drawing head 41, and the writing tool 71 are vertically moved to perform drawing according to the drawing data. Control the operation of the solenoid 742.
Further, in the present embodiment, the drawing control unit 815 applies a masking agent to a predetermined area outside the nail area adjacent to the nail area by the drawing tool (in the present embodiment, the drawing head 41) before drawing the design image on the nail T. Is applied to form a masking portion M around the nail area.
The range in which the masking unit M is formed is set based on the information stored in the storage unit 82.
In the case of drawing on a plurality of fingers (for example, all ten fingers of the thumbs to the little fingers of both hands), the masking portion M is sequentially formed for all ten fingers.

Next, the operation of the drawing apparatus 1 and the drawing method of the drawing apparatus 1 in the present embodiment will be described with reference to FIGS. 4 and 5.
FIG. 4A to FIG. 4D are plan views of the printing finger schematically showing from detection of the nail area to drawing of a design image on the nail T, and FIG. 5 is a drawing of this embodiment. It is a flowchart which shows the flow of a method.

When drawing is performed by the drawing device 1, the user turns on the power switch to activate the control device 80, and then inserts the printing finger U 1 into the finger receiving unit 31 and the non-printing finger U 2 into the finger retraction unit 32. After inserting and fixing the printing finger U1, the printing switch is operated.
When an instruction is input from the printing switch, the imaging control unit 811 first controls the imaging unit 50 to illuminate the printing finger U1 with the illumination light 52, as shown in FIG. 5, before starting the printing operation. The print finger U1 is photographed by the camera 51, and a finger image of the print finger U1 inserted in the finger receiving unit 31 is acquired (step S1).

Next, the nail information detection unit 812 detects the contour (nail area) of the nail T based on the finger image acquired by the imaging unit 50 (that is, the nail T portion indicated by hatching in FIG. Detect as an area (step S2).
Further, the display control unit 814 causes the display unit 26 to display a design selection screen. The user operates the operation unit 25 to select a desired design image from the plurality of design images displayed on the design selection screen, whereby the selection instruction signal is output from the operation unit 25 and printed on the nail T. A design image to be selected is selected (step S3).

When the nail area of the nail T is detected by the nail information detection unit 812, the drawing control unit 815 acquires information on the range for forming the masking unit M from the storage unit 82, and based on the information and the information of the nail area The drawing unit 40 is operated, and a masking agent is applied to a predetermined range outside the nail region to form the masking unit M (see step S4, FIG. 4B).
Specifically, the drawing control unit 815 operates the carriage moving unit 49 to appropriately move the drawing head 41 in the X and Y directions, and operates the ink discharge unit 411 to discharge the masking agent from the drawing head 41, thereby causing the claw A masking portion M is formed in a predetermined range outside the region.
When drawing design images on a plurality of fingers, such as 10 fingers of both hands, insert all the fingers to be drawn into the apparatus sequentially, and repeat the process of steps S1, S2 and S4. Then, the masking unit M is formed on all the fingers to be drawn.

After the formation of the masking unit M and before the first drawing, the imaging control unit 811 controls the imaging unit 50 again to acquire the finger image of the printing finger U1 inserted in the finger receiving unit 31 (step S5). .
Next, the nail information detection unit 812 performs a first nail area detection on this finger image to obtain a first detection result. Specifically, the nail information detection unit 812 detects the outline (nail area) of the nail T based on the finger image acquired in step S5 (that is, the first detection result by the first nail area detection). Acquisition, step S6). Specifically, the color in the finger image is analyzed, and the nail area is detected from the difference in color between the nail T and the masking portion M. At this time, the contour (masking area) of the masking portion M itself may be further detected. At this time, the nail information detection unit 812 also acquires nail information other than the nail area, such as the position in the height direction of the nail T and the nail curvature.
The acquired nail information such as the nail area is stored in the nail information storage area 822 of the storage unit 82.

The drawing data generation unit 813 processes the image data of the design image so that the design image is fitted to the nail region based on the nail information acquired by the nail information detection unit 812 and generates drawing data (step S7). ).
At this time, the drawing data correction unit 813a performs curved surface correction on the drawing data according to the nail curvature included in the nail information.
When the drawing data subjected to the curved surface correction is generated, the drawing control unit 815 outputs the drawing data to the drawing unit 40, and the drawing unit 40 performs a drawing process on the nail T according to the drawing data. (See step S8, FIG. 4 (c)).
Specifically, the drawing control unit 815 operates the carriage moving unit 49 based on the drawing data to appropriately move the drawing head in the X and Y directions, and operates the ink discharge unit 411 to draw the ink of each color. To make the nail T draw.
When drawing is performed using the writing tool 71, the drawing control unit 815 drives the solenoid 742 to make the writing tool 71 ready for drawing, and operates the carriage moving unit 49 based on the drawing data to write the writing tool. 71 is moved appropriately in the X and Y directions to cause the nail T to draw. At this time, the writing tool 71 is pressed against the surface of the nail T by its own weight, and performs drawing while moving up and down following the surface shape of the nail T.
Further, for example, as in the case where a background is drawn by the writing tool 71 and a fine pattern part is drawn by the drawing head 41, a part drawn by the drawing head 41 and a part drawn by the writing tool 71 in one design image In some cases, the drawing control unit 815 appropriately operates the ink ejection unit 411 of the drawing head 41 and the solenoid 742 of the writing tool 71 to perform drawing using both the drawing head 41 and the writing tool 71.

Here, the specific flow of the drawing process (that is, step S8 in FIG. 5) after the formation of the masking portion M (that is, step S6 in FIG. 5) will be described with reference to FIG.
For example, as shown in FIG. 4C and FIG. 4D, when drawing a design image having the base portion Db and the pattern portions Dd1 to Dd3, first, after forming the masking portion M, the printing finger U1 When the detection of the nail information (i.e., step S6 in FIG. 5) and the generation of drawing data based on this (i.e., step S7 in FIG. 5) are performed, the drawing control unit 815 draws the generated drawing data It is output to 40 to draw the ground part Db which is the first drawing (step S11).

Next, when drawing the pattern part Dd1 which is the second drawing, before drawing the pattern part Dd1, the print finger U1 including the nail T and the masking unit M is photographed to acquire a finger image (Step S12).
The nail information detection unit 812 detects a nail area from the finger image (that is, acquisition of a second detection result by second nail area detection, step S13). Specifically, the color in the finger image is analyzed, and the nail area is detected from the difference in color between the nail T and the masking portion M.

When the nail area is detected, the drawing data correction unit 813a matches the nail area by matching the nail area with the nail area that is the first detection result obtained by the first nail area detection in step S7. The position movement amount of is calculated to correct the drawing data (step S14).
When the drawing data correction unit 813a calculates the positional movement amount of the nail region, the masking units M may be matched together with the matching between the nail regions or in place of the matching between the nail regions. .
Then, the drawing control unit 815 outputs the corrected drawing data to the drawing unit 40, and causes the second drawing, that is, the drawing of the pattern portion Dd1 to be performed (step S15).

  The control unit 81 determines whether or not the drawing process of the design image to be drawn for the nail T is all completed (ie, in the example of FIG. 4C and FIG. 4D, the ground portion Db that constitutes the design image and Whether or not drawing of the picture parts Dd1 to Dd3 has been completed is judged (step S16), and if all drawing processes of the design image are completed (step S16; YES), the processing is ended. On the other hand, when it is determined that the drawing is not completed (step S16; NO), the process returns to step S12 and the subsequent processes are repeated.

When there are a plurality of fingers to be drawn, drawing of the base portion Db as the first drawing process and drawing of the picture parts Dd1 to Dd3 as the second drawing process are sequentially performed for each finger, and one finger is drawn. When all drawing processes for the finger are completed, the same process may be repeated for the next finger.
In this case, for example, when drawing is performed on the thumb and ring finger, first, drawing of the base portion Db and drawing of the pattern portions Dd1 to Dd3 are performed on the thumb, and then the fingers are replaced to draw the base portion Db of the ring finger The drawing of the portions Dd1 to Dd3 is performed.
In addition, for all the fingers, first, the base portion Db is drawn as the first drawing processing for each finger while sequentially replacing the fingers, and then, the second drawing processing for each finger is performed while sequentially replacing the fingers in the same manner. As drawing pattern parts Dd1 to Dd3 may be drawn.
In this case, for example, in the case of drawing on the thumb and ring finger, first, the base portion Db is drawn on the thumb, then the fingers are replaced to draw the base portion Db on the ring finger, and then the thumb on the thumb The drawing of Dd3 is performed, the fingers are further replaced, and the drawing parts Dd1 to Dd3 of the ring finger are drawn. In the case of drawing in such a procedure, even if it is necessary to allow time for drying after drawing the base part Db and the pattern parts Dd1 to Dd3 for one finger, drawing of the other finger is made at that time. The drawing process can be performed more quickly by effectively using the time.

When drawing of the design image for the nail T is completed, the drawing control unit 815 moves the carriage 42 to a position where the drawing head 41 is positioned above the head cap mechanism 43 and the writing tool 71 is positioned above the writing tool cap 62, The discharge surface of the drawing head 41 is covered by the head cap mechanism 43, and the writing tool cap 62 is attached to the writing tool 71 to prevent drying.
Then, the user withdraws the printing finger U1 from the device and peels off the masking portion M which is in the form of a film (see FIG. 4D).

As described above, according to the present embodiment, the masking portion M is provided around the nail area before the drawing of the nail T is started, and the first drawing is performed after the formation of the masking part and before the first drawing. The nail area detection is performed, and the second nail area detection is performed after the first drawing and before the second drawing, and the detection result by the first nail area detection and the detection result by the second nail area detection The position movement amount of the nail area is calculated from the above to correct the drawing data.
Therefore, the nail area can be accurately detected by detecting the area surrounded by the masking portion M. Thereby, in the process of drawing, the print finger U1 is removed from the apparatus or the finger moves with the passage of time, and the position of the nail T from the position at which the drawing was originally started is the nail width direction (ie, FIG. 4A) Or from the direction of extension of the finger in FIG. 4 (d) or the extending direction of the finger (ie, the vertical direction in FIG. 4 (a) to FIG. 4 (d)) or diagonally (ie, from FIG. 4 (a)). Even when it is inclined in the oblique direction in 4 (d), it is possible to correct the positional deviation of the nail area with high accuracy and to perform a beautifully finished nail print.
In addition, since the masking agent of the present embodiment has a color different from the color used in the design drawn by the drawing tool, what color is applied to the nail T, and what pattern is drawn If so, the nail area can be detected reliably.
In addition, since the masking agent has a color that can be distinguished from the color of the nail T and the skin, the area itself of the masking portion M to which the masking agent is applied can also be used for matching processing. Can be detected more accurately and reliably.
In addition, since the masking portion M is provided around the nail area as far as the boundary of the nail area, the ink adheres to the finger even if the ink is scattered or drawn out of the nail area. Instead, the dirt adhering to the outside of the nail area can be removed by peeling off the masking portion M after the completion of the drawing process.
In addition, since the masking agent is formed into a film by drying after application, the user is easily peeled off, and the masking portion M can be easily removed after all the drawing processes for the nail T are completed.

  The embodiment to which the present invention can be applied is not limited to the above-described embodiment, and can be appropriately changed without departing from the spirit of the present invention.

For example, in the above embodiment, as shown in FIGS. 4B and 4C, the outer shape of the masking portion M on the hairline side of the nail T is linear, but the outer shape of the masking portion M Is not limited to this.
For example, as shown in FIG. 7 (a), the masking portion M on the hairline side of the nail T may be provided with a projecting characteristic portion Ma whose tip has an acute angle, or as shown in FIG. 7 (b). A rectangular shaped feature portion Mb may be provided in the masking portion M on the hairline side.
Such characteristic portions Ma and Mb can be used as indices when the drawing data correction unit 813a matches the masking portions M to calculate the positional movement amount of the nail region, and the characteristic portions Ma and Mb By detecting the amount of displacement, it is possible to calculate the amount of position movement of the nail region simply and accurately.
In addition, when such features Ma and Mb are provided, the user may easily remove the masking section M by hooking a nail or the like on the features Ma and Mb even when the masking section M is peeled off. it can.
Further, when such features Ma and Mb are provided in a portion near the end of the printing finger U1 in the width direction, when the printing finger U1 is largely rotated about the axis in the extension direction of the finger as a rotation center , And the feature parts Ma and Mb do not appear in the finger image. Therefore, it is possible to easily detect the rotation of the printing finger U1 only by analyzing the finger image.

Further, in the present embodiment, the case where the drawing data correction unit 813a corrects the drawing data when the positional deviation of the nail area is detected is exemplified, but the correspondence when the positional deviation of the nail area is detected is the same. It is not limited to.
For example, when the positional deviation is equal to or more than a predetermined value and exceeds the range that can be dealt with by the correction, the user may be notified on the display 26 or the like by displaying that.
It may be determined by setting a threshold value as to whether or not the range which can be dealt with by the correction is exceeded. Further, for example, when the feature points Ma and Mb are provided in the vicinity of the end in the width direction of the finger in the masking unit M as illustrated in FIG. If Mb does not appear in the finger image, it is determined that there is a positional deviation beyond the range that can be handled by correction, and the notification operation or warning is given to stop the drawing operation and reset the print finger U1. May be

Further, in the present embodiment, the case where the user peels off the masking portion M and removes it after the completion of the drawing process is exemplified, but for example, a removal mechanism that hooks the masking portion M in the drawing device 1 and peels automatically. You may provide.
When such a mechanism is provided, it is possible to save the user the trouble of peeling the masking portion M.

In the present embodiment, the drawing apparatus 1 is described as a hybrid nail print apparatus including an ink jet drawing head 41 and a writing tool 71 as drawing tools, but the drawing apparatus is limited to this. It is also possible to use the configuration of the present invention even if it is a plotter type nail print apparatus having only the writing instrument 71 or a nail print apparatus having only an ink jet type drawing head (see FIG. 8).
When the drawing device is a plotter type nail print device provided with only the writing instrument 71, the application of the masking agent is also performed by the writing instrument 71.

Further, as shown in FIGS. 8A and 8B, a drying mechanism 9 having a heater or the like for drying the ink may be provided in the drawing apparatus 1.
When the drying mechanism 9 is provided, it is not necessary to insert and remove the printing finger U1 in order to dry the ink in each drawing process, but there is a possibility that the finger may move until all the drawing is completed.
Therefore, the first nail area detection is performed after the formation of the masking portion M and before the first drawing (e.g. drawing of the base portion Db in FIG. 4B) according to the method of the present embodiment. Second nail area detection is performed after the second drawing (for example, drawing of the pattern parts Dd1 to Dd3 in FIG. 4B) after drawing of the second part (for example, drawing of the base portion Db in FIG. The drawing data correction unit 813a generates a nail from the nail area as the first detection result obtained by the first nail area detection and the nail area as the second detection result obtained by the second nail area detection. It is preferable that a second drawing (for example, drawing of the picture parts Dd1 to Dd3 in FIG. 4B) be performed after the position movement amount of the area is calculated and the drawing data is corrected.
Further, in the present embodiment, in the drawing apparatus 1, the masking agent is applied by the drawing head or the writing tool 71 to automatically form the masking portion M. However, the present invention is not limited to this. Alternatively, the user may apply a masking agent to the area adjacent to the nail T of the printing finger U1 and manually form the masking portion M. In this case, it is not necessary to prepare the drawing head or the writing tool 71 to which the masking agent can be applied.

As mentioned above, although some embodiments of the present invention were described, the scope of the present invention is not limited to the above-mentioned embodiment, but the range of the invention described in the claim is the range of the equivalent. Including.
In the following, the invention described in the claims initially attached to the request for this application is appended. The item numbers of the claims described in the appendix are as in the claims attached at the beginning of the application for this application.

[Supplementary Note]
<Claim 1>
In a drawing device for drawing on a fingernail,
A nail area detection unit that detects an area of the nail on the finger as a nail area based on an image acquired by photographing a masking section formed by applying a masking agent to the area adjacent to the nail on the finger A drawing apparatus comprising:
<Claim 2>
A drawing unit having a drawing tool for masking that applies the masking agent;
A drawing control unit that forms the masking unit using the drawing tool for the masking;
Equipped with
The nail area detection unit detects the nail area based on an image obtained by photographing the nail when the masking section is not formed on the finger.
The drawing control unit is controlled to apply the masking agent to the area of the finger adjacent to the nail area detected by the nail area detection unit using the drawing tool for masking. A drawing apparatus according to claim 1.
<Claim 3>
The drawing unit further includes at least one drawing tool for drawing a selected design on the nail;
A drawing data correction unit configured to correct drawing data of the design drawn by the drawing tool for the design;
The nail area detection unit acquires a first detection result of the nail area before the first drawing by the drawing tool for the design, and after the first drawing, by the drawing tool for the design Acquiring a second detection result of the nail area before the second drawing,
The drawing data correction unit performs the second drawing by the drawing tool for the design, the nail area based on a comparison between the first detection result of the nail area and the second detection result. 3. The drawing apparatus according to claim 2, wherein the amount of movement of the position is calculated, and the drawing data is corrected according to the amount of movement.
<Claim 4>
The drawing data correction unit calculates the position movement amount of the nail area by matching the first detection result and the second detection result.
The drawing apparatus according to claim 3, wherein the masking unit is provided with a characteristic part that is an index at the time of matching by the drawing data correction unit.
<Claim 5>
5. The drawing apparatus according to claim 3, wherein the masking agent has a color different from the color used in the design.
<Claim 6>
The drawing apparatus according to any one of claims 1 to 5, wherein the masking agent is a material which becomes a film by drying after application.
<Claim 7>
A drawing method of the drawing apparatus,
Including an operation of detecting an area of the nail on the finger as a nail area based on an image acquired by photographing a masking portion formed by applying a masking agent to the area adjacent to the nail on the finger A drawing method characterized by
<Claim 8>
The drawing apparatus has a drawing unit having a drawing tool for masking which applies the masking agent,
When the masking portion is not formed on the finger, the nail area is detected based on an image acquired by photographing the nail;
8. The drawing method according to claim 7, further comprising an operation of applying the masking agent to the area of the finger adjacent to the detected nail area with the drawing tool for masking.
<Claim 9>
The drawing unit further includes at least one drawing tool for drawing a selected design on the nail;
In the detection of the nail area before the first drawing by the drawing tool for design, a first detection result is acquired as the nail area,
In the detection of the nail area after the first drawing and before the second drawing by the drawing tool for design, a second detection result is acquired as the nail area,
When performing the second drawing by the drawing tool for the design, the movement amount of the position of the nail area is calculated based on comparison between the first detection result of the nail area and the second detection result. 9. The drawing method according to claim 8, wherein the drawing data of the design drawn by the drawing tool for design is corrected according to the movement amount.

DESCRIPTION OF SYMBOLS 1 drawing apparatus 10 apparatus main body 40 drawing part 41 drawing head 49 carriage moving part 50 imaging | photography part 51 camera 71 writing instrument 80 control apparatus 81 control part 82 storage part 811 imaging | photography control part 812 nail information detection part 813 drawing data generation part 813a drawing data correction Part 814 Display control part 815 Drawing control part T nail

Claims (9)

In a drawing device for drawing on a fingernail,
The area of the finger adjacent to the nail according to the nail area at the time of non-masking, which is the area of the nail detected based on the image acquired by photographing the nail when the masking portion is not formed on the finger based on the image obtained by photographing a masking unit masking agent is formed by applying a nail region detection unit that detects a region of the nail in the finger during the masking as a masking during the nail area,
A drawing unit which performs drawing on the area of the nail according to the nail area at the time of masking;
A drawing apparatus comprising: The drawing unit may have a drawing tool for masking of applying the masking agent,
The drawing device further includes a writing control section for controlling the formation of the masking portion by using a drawing tool for the masking,
Before SL drawing control unit, said a region adjacent unmasked during nail region, drawing apparatus according to claim 1, wherein the controller controls so as to apply the said masking agent by the drawing tool for the masking. The drawing unit further includes at least one drawing tool for drawing a selected design on the nail;
A drawing data correction unit configured to correct drawing data of the design drawn by the drawing tool for the design;
The nail area detection unit acquires a first detection result of the nail area at the time of masking before the first drawing by the drawing tool for the design, and after the first drawing, the drawing for the design Acquiring a second detection result of the nail area at the time of the masking before the second drawing by the tool;
When the drawing data correction unit performs the second drawing by the drawing tool for the design, the drawing data correction unit compares the first detection result of the nail area at the time of masking with the second detection result. The drawing apparatus according to claim 1 or 2 , wherein the amount of movement of the position of the nail area is calculated at the time of masking, and the drawing data is corrected according to the amount of movement. The drawing data correction unit calculates a positional movement amount of the nail area at the time of masking by matching the first detection result and the second detection result.
The drawing apparatus according to claim 3, wherein the masking unit is provided with a characteristic part that is an index at the time of matching by the drawing data correction unit.   5. The drawing apparatus according to claim 3, wherein the masking agent has a color different from the color used in the design.   The drawing apparatus according to any one of claims 1 to 5, wherein the masking agent is a material which becomes a film by drying after application. A drawing method of a drawing apparatus for drawing on a fingernail ,
The area of the finger adjacent to the nail according to the nail area at the time of non-masking, which is the area of the nail detected based on the image acquired by photographing the nail when the masking portion is not formed on the finger An operation of detecting an area of the nail on the finger at the time of masking as a nail area at the time of masking based on an image obtained by photographing the masking portion formed by applying the masking agent ;
An operation of the drawing unit drawing on the area of the nail according to the nail area at the time of the masking;
A drawing method characterized by including. The drawing unit may have a drawing tool for masking of applying the masking agent,
The drawing method according to claim 7, wherein the drawing device controls the formation of the masking unit using a drawing tool for the masking . The drawing unit further includes at least one drawing tool for drawing a selected design on the nail;
The first detection result is acquired as the nail region at the time of the masking before the first drawing by the drawing tool for the design,
After the first drawing, a second detection result is acquired as the nail area at the time of masking before the second drawing by the drawing tool for the design,
When performing the second drawing by the drawing tool for the design, the position of the nail area at the masking time based on the comparison between the first detection result of the nail area at the masking time and the second detection result The drawing method according to claim 8, wherein the movement amount is calculated, and the drawing data of the design drawn by the drawing tool for design is corrected according to the movement amount.

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