JP2017213267A - Treatment method of nail art - Google Patents

Abstract

PROBLEM TO BE SOLVED: To have nail art printed on a nail by using an ink jet printer being expressed clearly without a blur or blot and have durability.SOLUTION: A first base layer 1 is applied on a whole surface of a nail N for a second base layer 2 having a hydrophobic property and serving as a carrier later of a nail art design layer to adhere to the nail N easily and to be removed by a remover liquid easily, and then the second base layer 2 is applied and cured by an ultraviolet ray. A junction layer 3 serving as a primer for providing an excellent adhering property of the art design layer 4 comprising a water soluble ink is applied on the second base layer 2. Then the art design layer 4 is printed by an ink jet printer and an overcoat layer 5 is applied on the art design layer.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a nail art treatment method for forming a nail art excellent in coloring clarity.

  Techniques for printing nail art on nails using an inkjet printing apparatus have been known. Printing this nail art directly on the nail has many physical and chemical problems such as unevenness on the nail surface and adhesion to the colored ink. For this reason, an appropriate coating layer is formed on the nail surface in advance. (For example, Patent Document 1, paragraphs 0049 and 0050). Such a coating layer should of course not be harmful to the human body, but requires quick drying as well as weather resistance. Thus, for example, Patent Document 2 discloses the use of a photocurable resin, particularly an ultraviolet curable resin (paragraphs 0032 to 0037).

  By the way, a normal inkjet printing apparatus uses a water-soluble ink unless it is special, and when the nail art is directly printed on a normal ultraviolet curable resin layer using this water-soluble ink, the water-soluble ink is used. Due to the inherent characteristics of the ink, there are problems in that fine patterns of nail art printed on a small area of the nail are likely to have blurring and color flow, and the outlines are blurred or clear colored patterns do not appear.

  Furthermore, it is disclosed that an overcoat layer is provided to protect the printed nail art (Patent Document 1, Paragraph 0051 and Patent Document 2, Paragraphs 0040, 0052, and 0060). ) Has developed into the printed nail art and blurs the nail art.

  On the other hand, when using an inkjet printing apparatus, there is a problem that the pattern is blurred or color flow occurs unless printing is performed while keeping the distance between the print head and each nail constant, and the print range is also defined. Must. A method of optically detecting these and controlling them by a computer is disclosed in Patent Document 1. However, such a method is very impractical to detect accurately and has a large error, and is not practical for precise printing. Therefore, as shown in Patent Document 3, a measure for holding the nail in place is desired.

Special table 2003-534083 gazette JP 2012-179320 A Japanese Patent Application No. 2015-28602

  An object of the present invention is to make a nail art printed on a nail using an inkjet printing apparatus clearly expressed and durable without blurring or blurring.

  In order to solve the above problems, in the present invention, a first base layer made of a resin that is soluble in a remover solution and has good adhesion to a hydrophobic photocurable resin is formed on the nail surface. A second step of applying a second base layer made of a hydrophobic photocurable resin to the surface of the first base layer and curing it by light irradiation, a photocurable resin and a water-soluble resin A third step of applying and curing a bonding layer containing a resin having a good adhesion to both the ink and a mixture of resin and binder on the surface of the second base layer, and the surface of the bonding layer In addition, a nail art is formed by a fourth step of forming an art design layer with water-soluble ink using an inkjet printing apparatus and a fifth step of forming an overcoat layer made of a hydrophobic resin on the surface of the art design layer. How to perform It was to configure the.

  Preferably, the first base layer is formed on the entire surface of the nail including the end face of the nail, and the second base layer is formed in a region including the nail root and both side edges and including the end face of the nail. The art design layer is formed in a region excluding the end face of the nail. Further, when the art design layer is printed by the ink jet printing apparatus, it is preferable to attach a tape that limits the range of printing to a fingertip. Furthermore, when the art design layer is printed by the ink jet printing apparatus, a nail is used. It is preferable to attach a fingertip holder that holds the height of each fingertip to each fingertip.

  According to this invention, as described above, when the art design layer is formed using the water-soluble ink, the adhesion between the hydrophobic resin layer that blocks the moisture of the nail and the art design layer is improved. Since the bonding layer is used, there is no blur or flow of art design, and a clear outline and coloring can be revealed. Further, when the hydrophobic resin layer is formed on the nail, the nail art can be easily and completely peeled off by the remover solution because the base layer which is easily dissolved in the remover solution is formed on the nail first.

(A) shows a state of forming the first base layer on the nail, a side view of the fingertip, (B) is a plan view of the fingertip, (A) shows a state of forming a second base layer on the nail, a side view of the fingertip, (B) is a plan view of the fingertip, (A) shows a state of forming a bonding layer on the nail, (B) is a plan view of the fingertip, (A) shows a state of forming an art design layer on the nail, (A) is a side view of the fingertip, (B) is a plan view of the fingertip, (A) shows a state of forming an overcoat layer on the nail, (A) is a side view of the fingertip, (B) is a plan view of the fingertip, A side view of a fingertip showing a range in which an overcoat layer is formed from the first base layer to the nail, (A) is a plan view of the tape wound around the fingertip, (B) is a perspective view showing a state where the tape is wound around the fingertip, A perspective view showing a fingertip holder, Longitudinal section of fingertip holder, Longitudinal section of fingertip holder, A plan view showing a support plate of a fingertip holder, It is a perspective view which shows an inkjet printing apparatus.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. The treatment method of the present invention is divided into five main processes and a preparation process and a finishing process performed before and after these main processes.

  There are various pretreatments as the initial preparation process. First of all, disinfect the finger to apply nail art, and then perform nail shaping work. For example, use a file or scissors to cut the nail appropriately, adjust the length of the nail, shape of the toe, etc., and push the base of the nail and the cuticle on both sides using a commercially available ceramic pusher, etc. . At this time, in consideration of the relationship with the printing range of the printing apparatus, which will be described later, it is preferable to shape in advance by assuming a suitable overall shape (including the length and width of the nail). After the shaping operation, the surface of the nail is uniformly roughened in order to improve the adhesion of the resin used in the subsequent process. For example, very fine irregularities can be formed on the surface of the nail by rubbing the surface of the nail with a tool having ceramic particles or abrasive particles attached to the surface of the foamed resin. After the roughening, the generated dust is removed with an alcohol solution or the like to clean the surface of the nail. It is not always necessary to perform all of these preparation steps, and only necessary operations can be performed by appropriate procedures.

  Next, the main coating process is entered. As shown in FIG. 1, the first base layer 1 is formed on the surface of the nail N that has been shaped and roughened by the preparation process. The base layer 1 improves the adhesion of the second base layer 2 described later to the nail N, and when the nail art is removed from the nail N, the upper layer including the second base layer 2 is easily removed. It is a buffer layer that can be made of a material selected in consideration of the balance between adhesion to the second base layer 2 and releasability, and is made of a photocurable resin, particularly an ultraviolet curable resin. Gel is used as the main component. Examples of the ultraviolet curable resin include monofunctional monomers such as methyl (meth) acrylate, ethyl (meth) acrylate, isobornyl (meth) acrylate, phenyl (meth) acrylate, hydroxyethyl (meth) acrylate, and hydroxymethyl (meth) acrylamide; Examples thereof include monomers having three or more functional groups such as hydroxypropyl (meth) acrylate and trimethylolpropane tri (meth) acrylate; oligomers such as urethane (meth) acrylate and polyester (meth) acrylate. These ultraviolet curable resins can be used alone or in combination of two or more, and in addition to a photopolymerization initiator, white dyes, pigments and other additives are fused and used in the form of a gel. It is done. Here, considering the workability when removing the upper layer from the first base layer 1 with, for example, a file, this layer 1 has a certain degree of flexibility and is easily dissolved by a commercially available remover (solution containing acetone). Preferably it can be done. From this standpoint, a combination of, for example, urethane acrylate oligomer, isobornyl methacrylate, and hydroxyethyl methacrylate monomer is selected as the ultraviolet curable resin. The first base layer 1 is also applied to the entire surface of the nail N and the end surface (edge portion) E of the nail tip as shown. That is, all the exposed portions of the finger F from the skin are covered. Usually, this coating operation is performed manually using a brush or a brush, and the coating amount does not need to be particularly thick as it is usually applied. Thereafter, it is cured by irradiating with ultraviolet rays UV.

  As shown in FIG. 2, a second base layer 2 is formed on the surface of the first base layer 1. The second base layer 2 is selected to have hydrophobicity and water resistance. This is because the art design layer 4 using water-soluble ink, which will be described later, is protected from the moisture that the nail N evaporates, and bleeding and flow of the art design layer 4 are prevented. Therefore, a photocurable resin, particularly an ultraviolet curable resin is used as the base layer 2. For example, monofunctional monomers such as methyl (meth) acrylate, ethyl (meth) acrylate, isobornyl (meth) acrylate, phenyl (meth) acrylate, hydroxy (meth) acrylate, hydroxymethyl (meth) acrylamide; hydroxypropyl (meth) acrylate, Trifunctional or higher functional monomers such as trimethylolpropane tri (meth) acrylate; oligomers such as urethane (meth) acrylate and polyester (meth) acrylate. These ultraviolet curable resins can be used alone or in combination of two or more, and in addition to suitable photopolymerization initiators, dyes, pigments and other additives are mixed and used in a gel form. . Here, considering the hydrophobicity and water resistance of the base layer 2, for example, a combination of monomers of urethane acrylate oligomer, isobornyl methacrylate, and trimethylolpropane trimethacrylate is selected as the ultraviolet curable resin. As shown in the drawing, the application range of the second base layer 2 is such that the base end edge 1a and both side edges 1b and 1b of the first base layer 1 are left with a width of 1 mm or less, for example, about 0.5 mm ( The claw tip surface (edge portion) E is covered without applying. The coating method is applied using a brush or a brush in the same manner as the first base layer 1. Here, the reason why the second base layer 2 is not applied to the edge 1a and both side edges 1b and 1b of the first base layer 1 is that the base layer 2 is formed when the art design layer 4 described later is formed. This is to prevent the color of the added dye or pigment from appearing as a frame of the art design layer 4. In addition, when removing the entire nail art from the nail, the hard and hard cured layer attached to the corner of the nail is difficult to remove with a file or the like. Thus, after apply | coating an ultraviolet curable resin, ultraviolet-ray UV (FIG. 2 (A)) is irradiated and it polymerizes and cures in a short time.

  After the second base layer 2 is polymerized and cured, a bonding layer 3 is formed on the surface thereof as shown in FIG. This bonding layer 3 is interposed between an art design layer 4 and a base layer 2 which will be described later, and a design layer made of water-soluble ink with respect to the layer 2 made of a hydrophobic (non-hydrophilic) photocurable resin. 4 is provided in order to improve adhesion, prevent bleeding and flow, clarify the coloring, and enhance durability. Therefore, the component of the bonding layer 3 is required to have adhesion to both the hydrophobic photocurable resin and the water-soluble ink. Further, from the viewpoint of quick drying, it is preferable that such a bonding layer 3 is mainly composed of a photocurable resin, particularly an ultraviolet curable resin. For example, an unsaturated polyester obtained by reactive condensation of polyethylene glycol, polypropylene glycol, maleic anhydride, and fumaric acid is blended with a suitable photopolymerization initiator and other additives to form a gel. Other resins having good adhesion to the base layer 2, for example, acrylic resins such as (meth) acrylate, methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate monomer polymers or derivatives thereof In addition, it is possible to use a gel in which a hydrophilic binder such as water, gelatin, polyvinyl alcohol, dextrin, polyacrylic acid, or alginic acid is mixed to improve the adhesion to water-soluble ink. In addition to these, as the bonding layer 3, a crosslinked polyester resin or a crosslinked polyester urethane-based resin crosslinked by a coupling agent can be used. The coupling agent is preferably a titanate coupling agent such as isopropyl triisostearoyl titanate or isopropyl tris titanate. The application of the bonding layer 3 is usually performed manually with a brush or a brush. As shown in FIG. 3, the coating range is a range that almost overlaps the layer 2 except for the end face (edge portion) E of the nail N, and is uniformly overlapped with a normal thickness. Apply. In the case of an ultraviolet curable resin, the ultraviolet ray UV is irradiated and cured.

  After the bonding layer 3 is cured and dried, an art design layer 4 is formed as shown in FIG. This layer 4 is formed of water-soluble ink using an inkjet printing apparatus. As the water-soluble ink, a normal ink for inkjet printing composed of water, a dye or pigment, a surfactant, a water-soluble organic solvent such as ethanol or isopropanol, a drying inhibitor such as diethylene glycol, or the like is used. The range of printing is almost the same as the bonding layer 3 as shown in FIG. After this printing, the bonding layer 3 is removed by using a file or the like together with the ink protruding from the tip surface (end surface E) of the second base layer 2 in particular. This is to prevent moisture permeation from the end face of the nail. In addition, the formation method of the art design layer 4 using an inkjet printing apparatus is explained in full detail later.

  After the art design layer 4 is formed, an overcoat layer 5 is formed as shown in FIG. Since this layer 5 protects the art design layer 4, in addition to solvents such as hydrophobic and water-resistant resins such as polyacrylonitrile, polymethacrylonitrile, modified polyvinyl alcohol, particularly silanol-modified polyvinyl alcohol, What mix | blended various additives, such as a brightener, is used. The application is performed manually using a brush or a brush, and the application range is the same as the first base layer 1, ie, the entire surface including the end face (edge part) E of the nail N, as shown in FIG. It is. In particular, when toughness is required, it is preferable to use a photo-curing resin, for example, an ultraviolet-curing resin previously used in the second base layer 2, and the coating amount should be applied relatively thickly. good. Thus, when the overcoat layer 5 is formed in the same region as the first base layer 1, the art design layer 4 as well as its surface as well as the entire periphery thereof, as is apparent from FIGS. And the first and second base layers 1 and 2 are completely closed and are not exposed, so that moisture can be prevented from entering the art design layer 4.

  Basically, the nail art treatment process is completed as described above. However, as a finishing process, in order to further improve water resistance and hydrophobicity and to give the nail art gloss, a water resistant resin such as the overcoat layer 5 is used. A topcoat layer (not shown) in which an additive such as a brightening agent is blended with the same photocurable resin can be applied to the overcoat layer 5 in an overlapping manner. The application range is the same as that of the overcoat layer 5. In addition, a finishing step such as removing or polishing ink, resin, dust or the like attached to the periphery of the nail N or the fingertip is necessary.

FIG. 6 shows the layer formation range from the first base layer 1 to the overcoat layer 5. In the figure, A ₁ indicates the entire surface including the end face (edge portion) E of the nail N, and A ₂ indicates a range excluding the end face E of the nail N and the one end edge 1a and both side edges 1b and 1b of the root. (See FIGS. 2 and 3).

Next, a procedure for forming the art design layer 4 using an ink jet printing apparatus after applying and drying the bonding layer 3 shown in FIG. 3 will be described. First, as shown in FIG. 7, in order to prevent water-soluble ink from adhering to the tip of the finger F and to define the print range of the art design layer 4, a flexible masking tape T is applied to the finger. wear. The masking tape T has a three-layer structure of a tape layer, an adhesive layer, and a release paper, and is composed of a substantially U-shaped depression T ₁ and legs T ₂ and T ₂ formed on both sides of the depression T _1. The tape layer is peeled off from the release paper. As shown in FIG. 7 (B), wound around the body portion of the tape T from the base of the nail N up to the vicinity of the first joint (distal interphalangeal joint), then the inner peripheral edge as far as possible the bonding layer of the U-shaped recess T ₁ The leg portions T ₂ , T ₂ are crossed with the fingertips so as to be along the outer peripheral edge of FIG. At this time, the flexible tape T is preferably attached while being stretched so that the tape T is in tight contact with the finger in a relaxed state.

  The holder R shown in FIGS. 8 and 9 is attached to the fingertip around which the tape T is wound as shown in FIG. 7B. The fingertip holder R includes a box-shaped casing 10 having a substantially rectangular plane, a fingertip pressing member 20 fitted from an upper surface opening 13 of the box-shaped casing 10, and is fixed to the casing 10 and protrudes from the upper surface of the casing 10. It comprises an inverted U-shaped fingertip restraining member 30 and a knock mechanism 40.

  The bottom plate 11 of the casing 10 has a horizontally flat bottom surface, and a recess 14 is provided in a part thereof, and a magnet 15 is inserted into the recess 14 and fixed as means for stopping the retainer R at a predetermined position. . The outer surface 15a of the magnet 15 is finished flat, and the outer surface 15a is substantially flush with the outer surface of the bottom plate 11 in a fixed state. Further, a guide pole 16 is provided upright inside the casing 10 slightly to the left of the center of the figure. At the upper edge of the peripheral wall 12 forming the opening 13 of the casing 10, a notch 13a is provided at the right end of FIGS.

  The fingertip pressing member 20 has a substantially rectangular top plate 21 and a skirt portion 22 that hangs from the periphery thereof, and the skirt portion 22 has a similar shape so as to be fitted into the inner surface of the peripheral wall 12 of the casing 10. A hollow cylindrical plunger 23 extends vertically from the inner surface of the top plate 21. Six equal angle cam teeth 23a are continuously formed in the circumferential direction at the tip of the plunger 23. In addition, a shallow groove 21a corresponding to the belly (lower surface) of the fingertip is formed on the upper surface of the top plate 21. The groove 21a has a substantially arched cross section, and is inclined in the length direction so that the depth gradually increases from the front end portion where the fingertip is placed to the rear end portion. A protrusion 21b is provided at a position substantially corresponding to the interphalangeal joint). Further, a pair of guide grooves 21 c and 21 c are provided on both sides of the skirt portion 22. These guide grooves 21c and 21c are fitted with both leg portions 32 of a fingertip restraining member 30 described later.

  The fingertip restraining member 30 having an inverted U-shaped plate-like body includes an arch-shaped portion 31 and leg portions 32 integrally extending downward from both sides thereof. The leg portions 32 are fixed to the casing 10. The arch-shaped portion 31 forms a curved surface that substantially matches the curvature of the upper surface (the surface with the nail) of the fingertip.

  The knock mechanism section 40 includes a hollow cylindrical cylinder 41 having both ends open, a rotating piece 42 fitted to the guide pole 16 in the cylinder 41, and a compression coil spring 43. The rotating piece 42 includes the coil It is biased upward by a spring 43. The rotating piece 42 includes second cam teeth 42a that mesh with each other in the same shape as the first cam teeth 23a of the plunger 23 on the outer periphery of the hollow cylindrical body. A cam surface 41a is provided which engages with the cam surface 41a, allowing or allowing the rotating piece 42 to rotate within a certain range in accordance with the up-and-down movement of the fingertip pressing member 20. A wedge-shaped cam protrusion 42 b is provided on the outer surface of the rotating piece 42.

  Now, when the fingertip pressing member 20 is pushed down from the state of FIG. 9, the plunger 23 on the inner surface pushes down the rotating piece 42 and compresses the spring 43. The rotating piece 42 has a cam projection 42b whose inner peripheral surface is the cylinder 41. The cam surface 41a is restrained by the cam surface 41a and descends to the position shown in FIG. Therefore, the cam protrusion 42b fits into a wedge-shaped locking portion 41b provided in a portion of the cam surface 41a that allows the rotation piece 42 to rotate, and stops while holding the lowered position (the maximum compression position of the spring 43). To do. At this position, there is a sufficient gap between the inside of the fingertip restraining member 30 and the top plate 21 of the fingertip pressing member 20 to insert the finger F as shown in the figure. Therefore, when the front-rear direction position of the fingernail N (the tape T is wound as described above) is adjusted and the top plate 21 of the pressing member 20 is slightly pushed down by the fingertip, the cam projection of the rotating piece 42 42b escapes from the wedge-shaped locking part 41b of the cam surface 41a, and the rotating piece 42 becomes rotatable and can be lifted, and the spring 43 pushes up the pressing member 20 via the rotating piece 42 and the plunger 23, thereby restraining the member. A fingertip is held between the 30 arched portions 31 and the top plate 21.

  The retainer R may be prepared in various sizes and attached according to the thumb, little finger, or individual differences. In any of the cages R, when the height H (FIG. 9) from the bottom surface of the casing 10 to the inner surface of the arch-shaped portion 31 is the same, each fingernail N is placed when a finger is attached to the inkjet printing apparatus described later. Can be maintained at the same height level, that is, the distance between each nail N and the inkjet print head can be made substantially constant. Further, as shown in FIG. 8, the casing 10 of the cage R is configured such that the width W of the base portion 17 is all constant, and the cage R of any size can be mounted on the support plate 50 described later.

  As shown in FIGS. 11 and 12, the inkjet printing apparatus J is provided with a support plate 50 for setting a finger equipped with the holder R. This support plate 50 is formed by providing a linear partition plate 52 on a substrate 51 made of a magnetic material that adsorbs magnets and having a horizontal surface, and forming five linear holding lanes 52a to 52e. The widths of the lanes 52a to 52e are slightly wider than the width W of the casing base portion 17 of the retainer R, and the base portion 17 of the retainer R is fitted and slidable. As shown in FIG. 11, among these lanes, lanes 52b to 52e are fitted with holders R attached to, for example, the index finger, middle finger, ring finger, and little finger of the right hand and slid along the lane to extend the fingers. Stop at the desired position. At this time, the casing 10 of the cage R is attracted to the magnetic substrate 51 and held in place by the magnet 15 (FIGS. 8 and 10). Further, the thumb of the right hand is folded and hidden on the lower surface of the palm, and the cage R attached to the thumb of the left hand is fitted into the lane 52a. At this time, the thumb of the left hand is arranged so as to follow the index finger of the right hand as much as possible. In FIG. 12, symbol M is a mat for placing a wrist.

  In the above state, the printing apparatus J is operated to print the art design layer 4. In order to perform this printing, the control circuit of the printing apparatus J is connected to the personal computer PC, and the printing apparatus J is controlled by the computer PC. First, since a large number of art designs are stored in advance in the computer PC, one (for one nail) is selected and designated from those displayed on the computer PC display before printing. . Further, since the camera provided in the printing apparatus transmits the image data of the nail around which the tape T is wound to the computer PC via the control circuit, the computer PC can detect the position and area of each nail to be printed by software. Etc. are defined. The computer PC issues a command to the control circuit of the printing apparatus J based on the position and area data of the nail to be printed, the selected art design data, etc., and the printing circuit J executes the control circuit according to the command. The carriage and belt are driven to move the print head back and forth and to the left and right, and the required inkjet nozzles are driven to print the art design on the nail N. As a result, the above-described art design layer 4 is formed.

Examples of the present invention will be described below.
Example 1
The toes of the left index finger of a woman engaged in desk work are shaped with a nail shaping file (trade name: NF Emery Board # 180/240, Natural Field Supply). The surface of the nail was roughened with an attached file (trade name: NF Sponge File SB213, Natural Field Supply), and the dust was wiped off to be cleaned. A polyurethane-based resin gel (trade name: Ace Gel Base Gel 2, Racine) is applied to the entire surface and end surface of the nail using a nail enamel brush to form a first base layer, and an ultraviolet irradiation device (product) After curing with a name SHINEGEL professional (World Beauty Works), a gel containing polyurethane acrylate blended with a white pigment as a second base layer (trade name ibd clear gel, Shinwa Corporation) was applied thickly with a brush. At this time, portions that were not applied with a width of about 0.5 mm were left at the base and both side edges of the nail. After application, the composition was cured using the ultraviolet irradiation device. Gel (part number PB-35, Sakura Crepas Co., Ltd.) mainly composed of a polyester resin was applied to the surface of the second base layer. The application range is a range excluding the nail end surface of the second base layer. After this is cured by the same ultraviolet irradiation device to form a bonding layer, a tape is wound around the fingertip as shown in FIG. 7, the holder shown in FIG. 8 is attached, and a light purple lattice is formed using the ink jet printing device shown in FIG. The pattern was printed and an art design layer was formed. Thereafter, a gel similar to the second base layer was applied as a thick overcoat layer in the same range as the first base layer with a brush, and cured using the same ultraviolet irradiation device. When the art design layer was visually observed, it was beautiful with no color bleeding or flow. I had this woman lead my daily life, and five days later, when I observed the same art design layer, there was no color blur or flow. Therefore, the second base layer is scraped with a file (trade name: Diamond Zebra F105, Natural Field Supply), and a remover containing acetone (product: MANICURELIST, Natural Field Supply) is infiltrated into the remaining first base layer. After being scraped off, it was scraped off using a wood stick, and it was peeled off cleanly, leaving no residue of deposits on the nails.
(Example 2)
A nail art was formed in the same manner as in Example 1 except that a thin sky blue oblique stripe pattern was printed as an art design layer. The result was the same as in Example 1. After that, I had a daily life for 4 days, but there was almost no change in the art design layer.

A ₁ Surface of the entire nail A ₂ Surface excluding a part of the nail E Nail end face F Finger H Height J Inkjet printing device M Matt N Nail PC Personal computer R Fingertip holder T Tape T ₁ Recessed portion T ₂ Leg UV Ultraviolet light W Base width 1 First base layer 1a Edge 1b Both sides 2 Second base layer 3 Bonding layer 4 Art design layer 5 Overcoat layer 10 Casing 11 Bottom plate 12 Perimeter wall 13 Opening 13a Notch 14 Depression 15 Magnet 15a Magnet outer surface 16 Guide pole 17 Base portion 20 Fingertip pressing member 21 Top plate 21a Groove 21b Projection 21c Guide groove 22 Skirt portion 23 Plunger 23a Angle cam teeth 30 Fingertip restraining member 31 Arched portion 32 Leg portion 40 Knock mechanism portion 41 Cylinder 41a Cam surface 41b Wedge shaped locking part 42 Rotating piece 42a Cam tooth 42b Cam projection 43 Coil spring Grayed 50 supporting plate 51 substrate 52 partition plate 52a~52e holding lane

Claims (5)

  A first step of forming on the nail surface a first base layer made of a resin that is soluble in the remover solution and has good adhesion to the hydrophobic photocurable resin; and from the hydrophobic photocurable resin A second step of applying the second base layer to the surface of the first base layer and curing it by light irradiation; and a resin having good adhesion to both the photocurable resin and the water-soluble ink Or a third step in which a bonding layer containing a mixture of resin and binder is applied to the surface of the second base layer and cured, and the surface of the bonding layer is art-designed with water-soluble ink using an inkjet printing apparatus. A nail art treatment method comprising: a fourth step of forming a layer; and a fifth step of forming an overcoat layer made of a hydrophobic resin on the surface of the art design layer.   The first base layer is formed on a nail surface including an end surface of the nail, and the second base layer is formed in a region including a nail root and both side edges and including the end surface of the nail. Nail art treatment method.   The nail art treatment method according to claim 1, wherein the art design layer is formed in a region excluding an end surface of a nail.   The nail art treatment method according to any one of claims 1 to 3, wherein a tape that limits a print range is attached to a fingertip when the art design layer is printed by an inkjet printing apparatus.   The nail art treatment method according to any one of claims 1 to 4, wherein when the art design layer is printed by an ink jet printing apparatus, a fingertip holder that holds a nail height constant is attached to each fingertip.

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