JP7226412B2 - DISPLAY DEVICE, PRINTING DEVICE, PRINTING SYSTEM, DISPLAY METHOD AND PROGRAM - Google Patents

Description

The present invention relates to a display device, a printing device, a printing system, a display method and a program.

2. Description of the Related Art Conventionally, a printing device (nail printing device) that prints a nail design on a nail or the like is known. When printing on nails, in order to improve the color development of the ink and to be able to print various designs regardless of the color of the nail, apply a base such as white on the nail before color printing. Forming is also performed.

If the printed design after printing on the nail is different from the user's image, the ink must be removed from the nail once to redo the printing, which is troublesome.
Therefore, for example, in Patent Document 1, a printing device that displays a three-dimensional print image when a design is printed on a nail before printing so that the user can check it in advance (see Patent Document 1) "Nail Art Device") is disclosed.

Japanese Patent No. 3016147

However, when a base such as white is formed on the nail before color printing, the finish of the nail design printing (color printing) depends to some extent on the color of the base. In addition, when the design includes a white portion, the white applied as a base may constitute the final nail design as it is.

In this regard, in the technique described in Patent Document 1, the image of the print image (preview image) preview-displayed on the display unit is a composite image of the user's nail area and the nail design. That is, the preview image is displayed according to the color information previously held as design data. For example, a white portion in the design data is displayed pure white, and even if there is color unevenness in the background, it is not reflected in the preview image.

For this reason, the design actually printed on the nail and the preview image confirmed by the user in advance may differ, and the user may not be satisfied with the finished product.
In particular, when the printing device has a print head for the base and the base is applied by the device, the formation of the base (i.e., how white the base is There is no opportunity to visually check whether the For this reason, the user can imagine the finish only from the preview image displayed on the display unit, and the user's image of the finish tends to diverge from the actual print result.

Therefore, there is a demand to check the finished image with a preview image that is as close as possible to the actual printing result, and decide whether to proceed with printing the nail design or repaint the base or change the design.

SUMMARY OF THE INVENTION The present invention has been made in view of the circumstances as described above, and provides a display device, a printing device, a printing system, a display method, and a program that enable confirmation of a print image with a preview image that is close to the actual print result. This is an advantage.

In order to solve the above problems, one aspect of the display device of the present invention includes:
display means;
detection means for detecting a print target area on a user's nail ;
original image data generating means for generating a preview original image in which design image data is superimposed on the detected print target area;
A comparison result between a first white level value that is the whiteness level of the printing target area in a state where the base ink is applied and a second white level value that is the whiteness level of the preview original image. original image data correcting means for correcting the preview original image based on
display control means for controlling the preview image corrected by the original image data correction means to be displayed on the display means;
It is characterized by comprising

According to the present invention, it is possible to check the print image with a preview image that is close to the actual print result.

1 is a perspective view showing a main configuration of a printing device and a terminal device associated therewith according to the present embodiment; FIG. 3 is a block diagram of main parts showing a control configuration of a printing apparatus and a terminal apparatus cooperating with the printing apparatus according to the present embodiment; FIG. 5 is a flow chart showing print data registration processing according to the present embodiment. 4 is a flow chart showing overall display processing and print processing according to the present embodiment. 7 is a flowchart showing display processing for correcting and displaying a preview image. It is a figure which shows an example of a nail|nail image. FIG. 10 is a diagram showing a state in which the periphery of the nail area is cut out from the nail image; FIG. 10 is a diagram showing a state in which a boundary of a white level area equal to or higher than a predetermined threshold is extracted as a nail contour; FIG. 10 is a diagram showing an example of a preview original image before correction; FIG. 4 is a diagram showing an example of white level values; (a) is an explanatory view showing an enlarged region VIIIa surrounded by a dashed line in FIG. 7, and (b) is an explanatory view showing an enlarged region VIIIb surrounded by a dashed line in FIG. be. FIG. 10 is a diagram showing an example of a corrected preview image in which the second white level value is corrected; FIG. 10 is a diagram showing an example of a corrected preview image in which the second white level value is corrected;

An embodiment of a display device, a printing device, a printing system, a display method, and a program according to the present invention will be described with reference to FIGS. 1 to 13. FIG.
Although various technically desirable limitations are attached to the embodiments described below for carrying out the present invention, the scope of the present invention is not limited to the following embodiments and illustrated examples.
Further, in the following embodiments, a printing device that prints on fingernails as printing targets will be described as an example, but the printing targets of the printing device in the present invention are limited to fingernails. Instead, for example, toe nails or the like may be printed. Also, a nail-like object other than a human nail, such as a nail tip or the surface of various accessories, may be printed.

FIG. 1 is a perspective view showing the external configuration of a main part of a printing apparatus and a terminal apparatus that cooperates with the printing apparatus according to the present embodiment. FIG. 2 is a block diagram showing the main part control configuration of the printing device and the terminal device.
In the following embodiments, up and down, left and right, and front and back refer to directions shown in FIG. Also, the X direction and the Y direction refer to the directions shown in FIG.

As shown in FIG. 1, the printing device 1 has a housing 2 formed in a substantially box shape.
The housing 2 covers substantially the entire surface in the lateral direction (lateral direction of the printing device 1, lateral direction in FIG. 1, X direction) on the lower part of the front side (the front side of the printing device 1, the front side in FIG. 1). It has an opening 21 formed in it. Further, a notch portion 22 is formed continuously on the upper side of the opening portion 21 in a substantially central portion of the housing 2 in the left-right direction. The notch portion 22 functions as an entrance and exit when a print head 41, which will be described later, is attached to and detached from the apparatus.

An operation unit 12 of the printing apparatus 1 is provided on the upper surface (top plate) of the housing 2 . The operation unit 12 is, for example, an operation button (power switch button) for turning on/off the power of the printing apparatus 1 . When the operation section 12 is operated, an operation signal is output to the control device 30, and the control device 30 performs control according to the operation signal to operate each section of the printing apparatus 1. FIG. For example, if the operation unit 12 is a power switch button, the power of the printer 1 is turned on/off according to the button operation.
Instead of the operation unit 12, each unit of the printer 1 may operate according to an operation signal input from an operation unit 71 of the terminal device 7, which will be described later.
The shape of each part of the housing 2, the arrangement of each part, and the like are not limited to the illustrated example, and can be set as appropriate. For example, the operation unit 12 may be provided on the side surface or the back surface of the housing 2 instead of the top surface. In addition, the housing 2 may be provided with various other operation buttons as the operation unit 12, and may be provided with various display units, indicators, and the like.

An apparatus main body 10 is housed inside the housing 2 .
The apparatus main body 10 includes a base 11, a finger holding section 6 attached thereto, a printing section 40, and the like.

The finger holding part 6 is arranged in a substantially central part in the left-right direction (X direction) on the front side of the device on the base 11, and is an area suitable for printing the finger U having the nail T, which is the object to be printed in the present embodiment. finger holding means for holding within.
The finger holding part 6 has an opening 61 on the front side of the device. A finger fixing member 62 is provided inside the finger holding portion 6 . The finger fixing member 62 pushes up and supports the finger U inserted from the opening 61 from below, and is made of, for example, flexible resin or the like.
A window portion 63 is formed on the upper surface of the finger holding portion 6 to expose the claw T portion of the finger U inserted from the opening portion 61 and held by the finger fixing member 62 .

The printing unit 40 is printing means for printing on the surface of the nail T, which is the object to be printed, in accordance with printing data generated by a print data generation unit 815 (control unit 81 of the terminal device 7, see FIG. 2), which will be described later. is.
The printing unit 40 includes a head that performs a printing operation (hereinafter referred to as a “print head 41”), a carriage 42 on which the print head 41 is mounted and held, and a head moving mechanism 49 for moving the print head 41 and the carriage 42 ( 2), etc.

As shown in FIG. 1, the carriage 42 of the present embodiment has a base head 41a and a design head 41b as the print heads 41 mounted thereon. In the following description, simply referring to the "print head 41" includes both the base head 41a and the design head 41b. The arrangement of the base head 41a and the design head 41b is not limited to the illustrated example.

The undercoat head 41a is a head for printing other than the design, and prior to printing the design, it prints a base liquid agent (hereinafter referred to as "undercoat ink") in the area where the design is printed. The undercoat ink printed by the undercoat head 41a is preferably a liquid material of white color or a color close to it so that the color development of the ink becomes good when the design is printed. By forming the base with white or the like, it becomes easier to distinguish from the color of the skin around the nail T (flesh color, etc.), and it becomes easier to recognize the region of the nail T more accurately from the nail image.

The design head 41b prints a design on the area where the base is printed after the base is printed by the base head 41a. ) (hereinafter referred to as “color ink”). In addition, the type of color ink that can be ejected from the design head 41b is not limited to this, and ink of other colors may be ejected.

In the present embodiment, both the base head 41a and the design head 41b have an ink ejection surface (not shown) having a plurality of nozzle openings for ejecting ink on the surface facing the nail surface. is made into fine droplets, and the ink is directly sprayed from the ink discharge surface onto the surface of the nail, which is the surface to be printed of the object to be printed (nail T), to perform printing. Although the configuration of the print head 41 is not particularly limited, it is, for example, a cartridge-integrated head in which an ejection mechanism such as an ink ejection surface and an ink cartridge (both not shown) are integrated.

The head moving mechanism 49 includes an X-direction moving mechanism including an X-direction movement motor 46 for moving the print head 41 in the left-right direction (X-direction) of the apparatus, and moves the print head 41 in the front-rear direction (Y-direction) of the apparatus. It consists of a Y-direction movement mechanism with a Y-direction movement motor 48 for moving.
The head moving mechanism 49 drives the X-direction movement motor 46 to move the print head 41 in the horizontal direction (X direction) of the apparatus. Further, the print head 41 is moved in the front-rear direction (Y-direction) of the apparatus by driving the Y-direction movement motor 48 .

The operations of the X-direction movement motor 46 and the Y-direction movement motor 48 of the head movement mechanism 49 and the print head 41 (ejection mechanism section of the print head 41) are controlled by the print control section 313 of the control device 30. FIG.

Further, inside the upper surface (top plate) of the housing 2 and above the window portion 63 of the finger holding portion 6, the nail T (the finger U including the nail T) exposed through the window portion 63 is photographed. An imaging unit 50 is provided for acquiring an image of the nail T (an image of the finger U including the nail T, hereinafter referred to as “nail image”).
The photographing unit 50 includes a photographing device 51 such as a camera, and an illumination device 52 including a white LED or the like for illuminating the nail T to be photographed.
The photographing unit 50 is connected to a photographing control unit 312 of the control device 30 to be described later, and is controlled by the photographing control unit 312 .
The nail image photographed by the photographing device 51 is acquired by the photographing control unit 312 and transmitted to the cooperating terminal device 7 as appropriate.
Note that the image data of the image captured by the imaging unit 50 may be stored in the storage unit 32, which will be described later.

In this embodiment, the photographing device 51 and the lighting device 52 are positioned inside the top surface of the housing 2 so as to face the nail T (surface of the nail T) of the finger U placed on the finger holding portion 6. Although the case where it is fixedly arranged has been exemplified, the photographing unit 50 only needs to be provided at a position where the nail T of the finger U placed on the finger holding unit 6 can be photographed, and the specific arrangement is not particularly limited. not.
For example, the imaging unit 50 may be configured to be movable in the XY directions by a head moving mechanism 49 that moves the print head 41 .

The control device 30 is mounted, for example, on a substrate (not shown) arranged inside (lower surface side) of the upper surface (top plate) of the housing 2 or the like.
As shown in FIG. 2, the control device 30 includes a control unit 31 configured by a processor such as a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), etc. (none of which are shown). ) and a storage unit 32 .
Note that the storage unit 32 may be configured separately and provided outside the control device 30 .

The storage unit 32 has a program storage area 321 in which various programs for operating the printing apparatus 1 are stored.
Specifically, the storage unit 32 stores various programs such as a print program for performing print processing. By being executed in the unit 31, each unit of the printing apparatus 1 is centrally controlled.

The control unit 31 of this embodiment includes a communication control unit 311, an imaging control unit 312, a print control unit 313, and the like from a functional point of view. Functions of the communication control unit 311 , the imaging control unit 312 , the printing control unit 313 , and the like are realized by cooperation between the control unit 31 and programs stored in the program storage area 321 of the storage unit 32 .

The communication control section 311 controls the operation of the communication section 13 .
The communication unit 13 includes a wireless communication module or the like capable of communicating with the communication unit 73 of the terminal device 7 , and the communication control unit 311 transmits and receives various data between the printing device 1 and the terminal device 7 . It controls the operation of the communication unit 13 at that time.
The printing apparatus 1 of the present embodiment prints a nail design (hereinafter also simply referred to as "design") in cooperation with a terminal device 7, which will be described later.
For example, when a nail image is acquired by the photographing unit 50, the communication control unit 311 appropriately controls communication by the communication unit 13, and data of the nail image is transmitted from the printing device 1 to the terminal device 7 via the communication unit 13. . Design data to be printed on the nail T is stored in the terminal device 7 side, and the communication control unit 311 appropriately controls communication by the communication unit 13 to receive design data from the terminal device 7 side via the communication unit 13. get. Furthermore, in this embodiment, print data for printing by the printing unit 40 is generated on the terminal device 7 side, and the communication control unit 311 acquires the print data via the communication unit 13. .

Communication between the printing device 1 and the terminal device 7 may use a network line such as the Internet, or may be a wireless communication based on a short-range wireless communication standard such as Bluetooth (registered trademark) or Wi-Fi. It may be one that performs communication. When communicating via a network, the network used for communication may use any line. Further, the communication between the printing device 1 and the terminal device 7 is not limited to wireless, and a configuration in which various data can be transmitted and received between the two via a wired connection may be employed.
It should be noted that the communication unit 13 may be anything as long as it can communicate with the terminal device 7, and a communication standard that matches the communication standard of the communication unit 73 of the terminal device 7 is applied.

The photographing control unit 312 controls the photographing device 51 and the lighting device 52 of the photographing unit 50 so that the photographing device 51 captures an image of the finger U including the image of the nail T of the finger U placed on the finger holding unit 6 (nail image).
In the present embodiment, as will be described later, the photographing unit 50 is adapted to photograph the nail T with the base applied, and the image of the nail T (nail image) obtained by the photographing unit 50 is the photographed image. It is sent to the control unit 312 . The nail image (data of the image of the nail T) acquired by the imaging control unit 312 is sent to the terminal device 7 via the communication units 13 and 73 as described above. Note that the imaging control unit 312 may store the nail image in the storage unit 32 .

The print control unit 313 controls the printing unit 40 to print on the nail T according to the print data generated by the print data generation unit 815 of the terminal device 7 .
Specifically, the print control unit 313 outputs a control signal to the printing unit 40 based on the printing data, and controls the printing unit 40 in the X direction so that the nail T is printed according to the printing data. It controls the moving motor 46, the Y-direction moving motor 48, the print head 41, and the like.

Further, as described above, the printing device 1 of the present embodiment prints on the nail T in cooperation with the terminal device 7 .
The terminal device 7 is, for example, a mobile terminal device such as a smartphone, and in this embodiment functions as a display device that displays preview images (see preview images Pva1 and Pva2 in FIGS. 12 and 13) on a display unit 72 described later. Note that the terminal device 7 is not limited to a smart phone. For example, it may be a tablet personal computer (hereinafter referred to as "PC"), a notebook PC, a stationary PC, a game terminal device, or the like.
As shown in FIG. 2, the terminal device 7 includes an operation section 71, a display section 72, a communication section 73, a control device 80, and the like.

The operation unit 71 can perform various inputs and settings according to user operations, and is, for example, a touch panel integrally provided on the surface of the display unit 72 (see FIG. 1). When the operation portion 71 is operated, an input signal corresponding to the operation is transmitted to the control portion 81 .
Various operation screens are displayed on the touch panel configured in the display unit 72 according to the control of the display control unit 812, which will be described later, and the user can perform various operations such as input and setting by touching the touch panel. .
Note that the operation unit 71 for performing operations such as various inputs and settings is not limited to a touch panel. For example, various operation buttons, a keyboard, a pointing device, etc. may be provided as the operation unit 71 .

In this embodiment, the user operates the operation unit 71 to output various instructions such as printing start from the terminal device 7 to the printing device 1 . It also functions as an operation unit.
In addition, the user can select a nail design (also simply referred to as “design”) to be printed on the nail T by operating the operation unit 71 .

The display unit 72 is configured by, for example, a liquid crystal display (LCD), an organic electroluminescence display, or another flat display.
Note that, as described above, a touch panel for performing various inputs may be integrally formed on the surface of the display unit 72 . In this case, the touch panel functions as the operation unit 71 .

The display unit 72 is display means for displaying various screens according to display data generated by a display data generation unit 814, which will be described later. In this embodiment, the nail design input/selected by the user through the operation unit 71, various guide screens, warning display screens, and the like can be displayed on the display unit 72. FIG.
Further, in the present embodiment, the display unit 72 displays a print image when the design is printed on the nail T as a preview image (see preview images Pva1 and Pva2 in FIGS. 12 and 13).
In addition, when the photographing unit 50 of the printing apparatus 1 is configured to be capable of photographing moving images, the photographing unit 50 photographs the state in which the user sets the finger U on the finger holding unit 6, and the obtained image is displayed on the display unit. 72 may be displayed as a live view image.
The display unit 72 is connected to a display control unit 812 of the control device 80 to be described later, and is controlled by the communication control unit 812 .

The communication section 73 is configured to be able to communicate with the communication section 13 of the printing apparatus 1 .
The communication between the printing device 1 and the terminal device 7 may be, as described above, either a wireless connection method or a wired connection method, and the specific method is not limited. The communication unit 73 may be any unit that can communicate with the printing apparatus 1, and one that conforms to the communication standard of the communication unit 13 of the printing apparatus 1 is applied.
The communication unit 73 is connected to a communication control unit 811 of the control device 80 to be described later, and is controlled by the communication control unit 811 .

As shown in FIG. 2, the control device 80 of the terminal device 7 of the present embodiment includes a control unit 81 configured by a processor such as a CPU (Central Processing Unit) (not shown), a ROM (Read Only Memory) and a RAM (not shown). (random access memory) or the like.

The storage unit 82 stores various programs, various data, and the like for operating each unit of the terminal device 7 .
Specifically, in the ROM or the like of the storage unit 82, in addition to an operation program 821a for centrally controlling each unit of the terminal device 7, a nail print application program 821b (hereinafter referred to as nail print application program 821b) for performing nail printing using the printer 1 is stored. A program storage area 821 is provided in which various programs such as "Nail Print AP" are stored. , each part of the terminal device 7 is controlled in an integrated manner.

Further, the storage unit 82 of the present embodiment is provided with a design storage area 822 for storing nail design data.
Note that the nail design (design) stored in the design storage area 822 may be an existing design prepared in advance or a design created by the user himself/herself. As will be described later, when a design data set is created by the user, it is stored in the design storage area 822 . In this case, it is preferable that the design data set is associated with information for identifying the user such as the user name, date of creation/editing of the data, printing order, and the like. As a result, from the next time, the user can easily call up the data set of the favorite design created by the user and use it for the nail print.
Further, when the terminal device 7 can be connected to various networks, it is possible to import a nail design stored in a network-connectable server device (not shown) or the like and store it in the design storage area 822 . It may be.

The storage unit 82 also has a nail information storage area 823 . The nail information storage area 823 stores various types of information (nail information) regarding the nail T detected by the nail information detection unit 813, which will be described later. In this embodiment, in particular, the nail information detection unit 813 detects the nail contour TL (see FIG. 8, etc.) in advance. The finger type of each finger U corresponding to the nail T (type of right hand/left hand or type of thumb to little finger) is associated and stored.
In this embodiment, when detecting the nail contour TL, a white level value (first white level value ) is detected, and the white level value (first white level value) for each pixel is stored in the nail information storage area 823 .
Note that the information stored in the storage unit 32 is not limited to those illustrated here, and for example, data such as nail images acquired by the imaging unit 50 of the printing apparatus 1 and various types of information detected from the nail images. Nail information such as (for example, a curvature indicating the degree of curvature of the nail T) may be stored.

The control unit 81 of the terminal device 7 includes a communication control unit 811, a display control unit 812, a nail information detection unit 813, a display data generation unit 814, a print data generation unit 815, and the like, from a functional point of view. The functions of the communication control unit 811, the display control unit 812, the nail information detection unit 813, the display data generation unit 814, the print data generation unit 815, etc. are performed by programs stored in the CPU of the control unit 81 and the ROM of the storage unit 82. realized in collaboration with Note that the functions provided by the control unit 81 of the terminal device 7 are not limited to this, and may be provided with various other functional units.

The communication control section 811 controls the operation of the communication section 73 .
The display control unit 812 also controls the display unit 72 to display various display screens on the display unit 72 . Specifically, various images and the like are displayed on the display unit 72 based on the display data generated by the display data generation unit 814 . In particular, in this embodiment, the display control unit 812 displays a preview image based on corrected preview image data corrected by a display data generation unit 814 that functions as an original image data correction unit, as will be described later. It controls the display unit 72 .
In addition, when the photographing unit 50 of the printing apparatus 1 continuously photographs the appearance of the finger U inserted into the finger holding unit 6 from above the finger holding unit 6 as a continuous still image or a moving image, display control is performed. The unit 812 may cause the display unit 72 to display the plurality of images captured by the imaging unit 50 while sequentially updating them at a predetermined reproduction frame rate. In this case, the display section 72 sequentially displays the state in which the user sets the finger U on the finger holding section 6 as a live view image.

The nail information detection unit 813 is detecting means for detecting nail information about the nail T of the finger U based on the image of the nail T (nail image) captured by the image capturing unit 50 of the printing apparatus 1 and sent to the terminal device 7 . is.
In this embodiment, the nail information detection unit 813 detects the nail contour TL (see FIG. 8) of the nail T of each finger U. FIG.
The data of the "nail contour TL" as nail information is the contour shape of the nail T expressed by a plurality of contour points (for example, several tens to several thousand points) in a predetermined rectangular image (nail shape, nail T XY coordinates of horizontal position, etc.). The nail contour TL defines the nail T and other parts (such as the skin of the finger U). becomes.

A method for the nail information detection unit 813 to detect the nail contour TL from the nail image, which is the image to be printed, is not particularly limited. is binarized as a nail region (printing target region), and a line delineating the boundary is detected as a nail contour TL.
In the present embodiment, the undercoat is applied (printed) to the nail T by the undercoat head 41a. A level is detected, and the nail area (printing target area) is recognized depending on whether or not the value of this white level exceeds a predetermined threshold.
The information of the nail contour TL of the nail T acquired by the nail information detection unit 813 is stored in the nail information storage area 823 of the storage unit 82 in association with the finger type of the finger U having the nail T.
Also, the white level value detected for the nail region (printing target region) is acquired for each pixel as a first white level value and stored in the nail information storage area 823 of the storage unit 82 .

,
When the base is printed by the print head 41 (base head 41a) as in the present embodiment, the value detected as the first white level value is printed by the print head 41 (base head 41a). It is the limit value that can be obtained, and it is impossible to obtain whiteness beyond this value by printing.
Here, the "white level value" in this embodiment is a value detected based on the luminance value.
For example, in the case of a white finger U or nail T, if white is printed on the nail T as a base, a high value is detected as the first white level value. In fact, even if white is printed in the same manner, the first white level value may be low. In addition, the difference in covering power and correcting power of the original color of the finger U and nail T depending on the type of ink (color and density of the base ink contained in the base head 41a, etc.) and the difference in the ability to correct the original color of the finger U and the nail T, and the difference in printing and photographing. The detected first white level value differs depending on the brightness of the room and the like.
Also, even for one nail T printed and photographed under the same conditions, the first white level value detected for each portion (for each pixel) may differ depending on, for example, a scratched portion or the condition of blood color. be.

Note that the nail information detected by the nail information detection unit 813 is not limited to this.
The nail information detected by the nail information detection unit 813 may include, for example, the inclination angle of the surface of the nail T with respect to the XY plane (the inclination angle of the nail T, the nail curvature). Further, if the height of the nail T (vertical position of the nail T) can be acquired from an image or the like captured by the imaging device 51, the height of the nail T may also be included in the nail information.
In this embodiment, as will be described later, for example, a set of print data to be printed on the nails T of ten left and right fingers U is prepared, and the order of printing is defined in advance. For this reason, various types of nail information detected by the nail information detection unit 813 are also stored in the nail information storage area 823 in association with information such as finger types and printing order.

The display data generation unit 814 generates display data for displaying various images on the display unit 72 . In this embodiment, a print image is displayed as a preview image (see preview images Pva1 and Pva2 in FIGS. 12 and 13) before actual printing is performed, and the display data generation unit 814 displays the preview image. In addition to generating data for printing, appropriate corrections are made so that the preview image is closer to the print image.
Specifically, in the present embodiment, the display data generation unit 814 superimposes the design data on the nail contour TL (the contour line defining the nail region) detected by the nail information detection unit 813, and produces the data shown in FIG. It functions as original image data generating means for generating such a preview original image Pvb.
Further, in this embodiment, the display data generating unit 814 generates the second white level value, which is the white level value of the preview original image Pvb, and the white level value of the print target area (the inner area defined by the nail contour TL). It functions as white level comparison means for comparing with the first white level value.
Furthermore, in this embodiment, the display data generator 814 also functions as original image data correction means for correcting the preview original image Pvb based on the comparison result of the white level comparison means.

Specifically, in the present embodiment, the display data generator 814 as white level comparison means compares the second white level value and the first white level value.
As a method of obtaining the second white level value, which is the white level value of the preview original image Pvb for comparison with the first white level value, for example, the data of the preview original image Pvb, which is a color image, is a luminance signal. (Y), the difference (U) between the luminance signal and the blue component, and the difference (V) between the luminance signal and the red component. The preview source image Pvb is converted into monochrome data by classifying into 256 levels based on the level of the Y value (luminance value) of . Then, the value of the white level of the preview original image Pvb converted into monochrome data is obtained for each pixel as the second white level value.
As a result, the first white level value of the print target area (the inner area defined by the nail contour TL) and the second white level value of the preview original image Pvb are both the Y value (luminance value). Expressed as levels, they can be compared with each other.

As a result of the comparison, the display data generation unit 814 determines if the second white level value in the preview original image Pvb is greater than the first white level value of the print target area (the inner area defined by the nail contour TL). 2, as the original image data correcting means, performs correction to replace the second white level value with the first white level value, and the second white level value in the preview original image is the area to be printed (delineated by the nail contour TL). If it is less than or equal to the first white level value of the inner area where the white level is located, correction is not performed, so that only necessary portions (pixels) are corrected.
Note that the display data generating unit 814 functions as white level comparing means and original image data correcting means to obtain the second white level value in the preview original image Pvb and the second white level value of the print target area (the inner area defined by the nail contour TL). A white level value of 1 is compared for each corresponding pixel, and it is determined whether or not to perform correction for each pixel.
After appropriate correction, the preview original image Pvb is replaced with RGB data or YUV data for color display on the display unit 72 based on the Y value (luminance value) of the monochrome data after correction. preview image data Pva1 and Pva2 (see FIGS. 12 and 13).

The print data generation unit 815 generates print data for each finger by matching a desired design to the nail contour TL stored in the nail information storage area 823 .
Specifically, the print data generation unit 815 cuts out the image data of the nail design selected by the user so as to fit the rectangular frame F circumscribing the nail contour TL, and adjusts the size and arrangement as appropriate. and fitting to the nail contour TL detected from the image of the nail T.
When the curvature of the nail T is acquired by the nail information detection unit 813, the print data generation unit 815 may appropriately perform curved surface correction on the print data based on the curvature of the nail T. . When curved surface correction is performed, print data more suitable for the shape of the nail T can be generated.
The print data generated by the print data generation unit 815 is sent to the printer 1 via the communication units 73 and 13 .

Next, the display method of the present embodiment and print processing to which the display method is applied will be described with reference to FIGS. 3 to 13. FIG.
When performing nail printing using the printing apparatus 1 of the present embodiment, the user operates the operation unit 12 (operation buttons) and the like of the printing apparatus 1 to turn on the power.
Also, the power of the terminal device 7 is turned on, and execution of nail print processing is selected from the operation section 71 of the terminal device 7 . This activates the nail print AP 821b.
When the nail print AP 821 b is activated in the terminal device 7 , the display control section 812 of the terminal device 7 prompts the user to set the finger U corresponding to the nail T to be printed on the finger holding section 6 . Specifically, an instruction screen prompting to set the finger U is displayed on the display unit 72 . At this time, the user may be prompted to set the finger U after applying a base to the nail T.
In this case, first, nail contours TL are obtained and registered in advance for all fingers U to be printed (for example, all 10 fingers from the thumbs to the little fingers of the left and right hands). Specifically, it is done as follows.

That is, when the finger U is set on the finger holding section 6, the photographing section 50 photographs the nail T of the finger U set on the finger holding section 6, and the photographing control section 312 acquires the nail image. Then, the nail information detection unit 813 detects the nail contour TL from the nail image.
When the nail contours TL are detected for all the fingers U to be printed, the control unit 81 (nail information detection unit 813) collects data of the nail contours TL acquired by a series of photographing (for example, data of the left and right hands of the user). Data of the nail contours TL of all ten nails T from the thumb to the little finger) are registered in the storage unit 82 as a set for all fingers. Specifically, the control unit 81 stores the data of each nail contour TL in the nail information storage area 823 of the storage unit 82 in association with the finger type information indicating which finger U the nail T belongs to. This completes the nail contour registration process.
It is preferable that information for identifying a user such as a user name is associated with the data set of the nail contour. As a result, from the next time, the user can easily call up the data set of the nail contour TL of his/her own nail T and use it for nail printing, thereby shortening the time required for nail printing.

In this embodiment, when the nail contour TL data for all fingers is obtained, a design to be printed on each nail T is selected, and the size and direction of the design data are adjusted in advance according to the user's nail contour TL. Then, print data for printing the nail design on the nail T of each finger U is generated, and for example, print data for ten fingers of the left and right hands are registered as one set in the storage unit 82 or the like. It has become.
FIG. 3 is a flow chart showing the process of creating and registering such print data.
As shown in FIG. 3, the user selects a set of nail contour data for which print data is to be created from the registered nail contour data registered in the storage unit 82 (step S1).

The data for printing is a data set for printing consisting of a plurality of data corresponding to all the nail contours TL included in the data set for the nail contours TL. That is, the print data is created by the user selecting design data to be applied to each nail T constituting the data set of the nail contour TL, and matching the selected design data with the nail contour TL of each nail T. FIG. The designs may all have the same motif (for example, a pink checkered pattern, a one-point sunflower pattern, etc.), the same pattern in different colors, or a combination of completely different patterns.

When a set of nail contour data is selected, creation of a design for the nail T of the n-th finger U is started (step S2).
Specifically, first, the nail contour TL (the contour line of the nail T) of the nail T of the n-th finger U is displayed on the display unit 72 (step S3).
A desired design is selected and set from the design data stored in the design storage area 822 (step S4).
When the user selects data of a desired design, a data set for printing is generated by matching the design to the nail contour TL of each nail T constituting the set of nail contour data. The matching of the design to the nail contour TL is performed by superimposing the design selected on the display screen of the display unit 72 on the nail contour TL (step S5).
Specifically, the layout of the design to be printed on the nail T is set by adjusting the size, orientation, etc. of the design according to the nail contour TL (step S6).

When the layout is set, the inside of the nail contour TL becomes the design that is actually printed on the nail T, and the creation and editing of the design for the nail T of the n-th finger U is completed (step S7).
Next, the control unit 81 determines whether or not the creation of designs for all fingers U has been completed (step S8). That is, when printing is scheduled for all ten fingers, it is determined whether or not "n=10".
If design creation has not been completed for all fingers U (step S8; NO), the next (n+1)th finger is designated as the nth finger (step S9), and the process returns to step S2, where "n=10 ” until the process is repeated. Note that n can be an arbitrary number when printing on the nails T of the desired number of fingers U. FIG. For example, if it is desired to print on the nails T of all eight fingers U from the index finger to the little finger of both hands, set "n=8".

On the other hand, when the design creation for all fingers U is completed (step S8; YES), the print data generation unit 815 generates print data for printing the design created by the user on each nail T. , is registered in the storage unit 32 as a set for all fingers (step S10). Here, the print data generation unit 815 cuts out the design according to the position and orientation edited and set by the user, and appropriately performs correction processing such as curved surface correction. This completes the print data generation process.
The print data (set of print data for a plurality of fingers) thus generated is stored (registered) in association with information for identifying the user such as the user name. is preferred. As a result, from the next time, the user can easily call up a data set of print data of a desired design and use it for nail printing, thereby shortening the time required for nail printing. Also, if the date of creation of the print data is associated with the data, it is preferable that the data can be easily retrieved at a later date.

FIG. 4 is a flowchart showing the overall display processing and print processing in this embodiment.
When actually printing a nail print, as shown in FIG. 4, the user first selects a desired set from the sets of print data registered in the storage unit 82 (step S21). For example, the display unit 72 displays a data set for printing in which the design is matched with the contour TL of the nail T of each finger U, confirms whether or not the design is the desired one, and executes printing. is input, the print data set is set as data to be printed on the nail T. FIG.

In this embodiment, the print data constituting the print data set is output to the printing unit 40 in a predetermined order, and the printing unit 40 performs printing according to the output print data. . Therefore, when one of the print data sets is selected, the display control unit 812 of the terminal device 7 displays the finger corresponding to the nail T to be printed first in the order determined in the print data set. The user is urged to set U on the finger holding portion 6 (step S22). Specifically, the display unit 72 displays an instruction screen that prompts the user to set the finger U.
In the present embodiment, the base is printed by the base head 41a, and when the finger U is set on the finger holding section 6, the surface of the nail T of the finger U set on the finger holding section 6 is printed. A base is formed (step S23). Specifically, the print control unit 313 of the printing apparatus 1 operates the base head 41a and the like to print the base ink such as white on the surface of the nail T. FIG. In the case where the printing unit 40 is provided with a pen-type head or the like instead of an ink-jet head, a base is formed on the surface of the nail T by applying base ink to the surface of the nail T with the pen or the like. good too.

When the base is printed and formed on the nail T, the photographing unit 50 photographs the nail T on which the base is formed, and the photographing control unit 312 acquires the nail image (step S24). The acquired nail image is sent from the printing device 1 to the terminal device 7 . FIG. 6 is a diagram showing an example of a nail image. FIG. 6 illustrates how the nail image is displayed on the display unit 72 of the terminal device 7 .
When the terminal device 7 acquires the nail image, the nail information detection unit 813 detects nail information such as the nail contour TL from the nail image (step S25).
Then, a preview image showing the print image is displayed on the display section 72 (step S26).

Here, the preview image display processing in the terminal device 7 as a display device will be described with reference to FIG.
FIG. 5 is a flowchart showing display processing for correcting and displaying a preview image.
As shown in FIG. 5, when the nail image is acquired, the nail information detection unit 813 detects the nail contour TL as the nail information and the first white level value for each pixel in the region within the nail contour TL (step S41).
FIG. 7 shows a state in which a contour line delimiting an area where a base is formed from the nail image shown in FIG. 6 is detected as a nail contour TL, and a rectangular frame Fa (a circumscribing rectangle) is set in contact with the nail contour TL. there is In addition, in FIG. 7, the region other than the inner region of the nail contour TL (finger U portion) is indicated by a broken line.
Detection of the nail contour TL by the nail information detection unit 813 is performed, for example, by recognizing the white color of the nail image, detecting the luminance value level, and binarizing the region where the luminance value level is equal to or higher than a predetermined threshold as the nail region. This is done by using the contour line that defines the area as the nail contour TL. It should be noted that the level of the predetermined threshold is appropriately set. For difficult-to-recognize nail hairlines, etc., detection results may be corrected by the user. Further, the detection results may be learned by repeating recognition, and the accuracy of detection may be improved.
FIG. 8 is a diagram showing an example of a nail contour detected by binarizing a nail image.

When the nail contour TL is detected, the display data generation unit 814 serves as original image data generation means to superimpose the print data on the area within the detected nail contour TL to generate a preview original image Pvb (step S42). .
FIG. 9 is a diagram showing an example of a preview original image. Specifically, a rectangular frame Fb corresponding to the rectangular frame Fa in contact with the nail contour TL is set in the printing data, and the rectangular frame Fa of the nail contour TL and the rectangular frame Fb of the printing data are superimposed to produce a preview original image Pvb. to generate

The display data generator 814 classifies the data of the preview original image Pvb into 256 levels based on the brightness value (Y value) to generate monochrome data (step S43).
The display data generator 814 obtains a second white level value from the luminance level of each pixel of the preview original image Pvb converted to monochrome data (step S44).
Then, the first white level value and the second white level value are compared for each pixel (step S45), and it is determined whether or not the second white level value is greater than the first white level value (step S45). step S46).

FIG. 11(a) is an explanatory view showing an enlarged region VIIIa surrounded by a dashed line in FIG. 7, and FIG. 11(b) is an enlarged view of a region VIIIb surrounded by a dashed line in FIG. It is an explanatory diagram. 11(a) and 11(b), each of the squares separated by dashed lines represents one pixel, and the corresponding squares in the region VIIIa and the region VIIIb correspond to the respective positions. is a pixel of
As shown in FIG. 11(a), when the nail region (inside the nail outline TL) in which the base of white or the like is formed on the entire surface is viewed for each pixel, the color under the base is visible through. There are parts with some color, such as parts.
For example, as in the example shown in FIG. 10, when the white level value is represented by 256 gradations from 0 to 255, assuming that the white level value of the nearly pure white portion is 255, in FIG. The white level value of pixel Pn1 is 192 or lower, and the white level values of pixels Pn2 and Pn3 are 224 or slightly higher.

Each pixel of the preview original image Pvb converted into monochrome data corresponding to the pixel portion shown in FIG. 11(a) is as shown in FIG. 11(b).
For example, looking at pixels Pd1, Pd2, and Pd3 corresponding to pixels Pn1, Pn2, and Pn3, the white level values of pixels Pd1, Pd2, and Pd3 (that is, the second white level values) are all the pixels Pn1, Pn2, and Pn3. is greater than the white level value of (i.e., the first white level value).
That is, for this portion, even if the design is printed after this, the white level will not be the same level as that of the preview source image Pvb, and the actual printing will have dull colors.

Therefore, as a result of comparing each pixel of the nail region (the inner region of the nail contour TL) and each pixel of the preview original image Pvb converted into monochrome data, the second white level value is the first white level value. If it is larger than the white level value (step S46; YES), the display data generator 814 sets the second white level value of the pixel (for example, the pixels Pd1, Pd2, and Pd3 shown in FIG. 11B) to the first white level value. is corrected based on the white level value of (step S47). For example, the display data generator 814 performs correction to replace the second white level value of the pixel with the first white level value.
On the other hand, if the second white level value is less than or equal to the first white level value (step S46; NO), it means that the same white level as that of the preview source image Pvb can be represented. 11(b)) are not corrected (step S48).
When comparison of all pixels is completed in this manner, preview images Pva1 and Pva (see FIGS. 12 and 13) based on the corrected preview image data are displayed on the display unit 72 (step S49).

The example shown in FIG. 12 is for a case where the white level value (that is, the first white level value) of each pixel in the nail region (the inner region of the nail contour TL) is generally low (for example, the white level value 192 shown in FIG. 10). The preview image Pva1 based on the preview image data after correction is darker as a whole than the preview original image Pvb before correction shown in FIG. ing.
On the other hand, in the example shown in FIG. 13, the white level value (that is, the first white level value) of each pixel in the nail region (the inner region of the nail contour TL) is somewhat low (for example, the white level value shown in FIG. 10). 9, the preview image Pva2 based on the preview image data after correction is slightly overall compared to the preview original image Pvb before correction shown in FIG. Although it is darker than the example shown in FIG. 12, it is brighter.

Returning to FIG. 4, the user confirms the preview images Pva1 and Pva displayed on the display unit 72, and if the displayed finish is acceptable, operates the operation unit 71 or the like to permit printing ( For example, an OK button operation) is performed.
The control unit 81 determines whether or not the OK button has been operated (whether printing is permitted) (step S27). print processing is performed (step S28). On the other hand, if the OK button is not operated and printing is not permitted by the user (step S27; NO), printing of the nail T is stopped (step S29).

In this case, the display section 72 or the like may display a message requesting the user to take action, such as "Do you want to reselect the design?" For example, by changing the design to one with no white areas or few white areas, it is possible to suppress the influence of the background white level (the first white level value) on the printed design, and the background correction, etc. can be suppressed. The nails T of all the fingers U can be printed without printing.
If there is even one finger U for which printing is not permitted, the entire design may be changed by canceling the entire printing. Some nail designs are applied to the nails T of a plurality of fingers U, such as 10, as a set, and if the design of some of the nails T is changed, the impression as a whole may change greatly. . Therefore, if there is even one finger U for which printing is not permitted, the design of the entire set may be changed without comparing the white level values of the other nails T at that point.

The control unit 81 further determines whether or not the processing has been completed for all the nails T of the fingers U scheduled to be printed (step S30). If all have been completed (step S30; YES), End the print process. On the other hand, if there is an unprocessed finger U (step S30; NO), the display unit 72 displays an instruction screen or the like prompting to set the next finger U on the finger holding unit 6 (step S31), Returning to step S23, the subsequent processing is repeated.
As a result, it is possible to obtain the print result of the image on the nail T of each finger U as the user confirmed in advance with the preview images Pva1 and Pva2.

As described above, according to the present embodiment, the preview images Pva1 and Pva2 are displayed when a design is printed in the print target area (the inner area of the nail outline TL) of the nail T to which the base is applied. The mobile terminal 7 as a display device displays a display unit 72, a first white level of a print target area (nail contour TL defining the print target area) and a white level of an area inside the nail contour TL in a state where the base is applied. nail information detection unit 813 for detecting a white level value; original image data generation means for generating a preview original image Pvb by superimposing design data on an inner region of the nail contour TL detected by the nail information detection unit 813; a white level comparing means for comparing a second white level value, which is the white level of the original image Pvb, with the first white level value of the inner area of the nail contour TL; A display data generating unit 814 functioning as an original image data correcting means for correcting Pvb, and a display unit 814 that performs display based on corrected preview image data corrected by the display data generating unit 814 as an original image data correcting means. and a display control unit 812 that controls 72 .
As a result, when the white level value (second white level value) of the white portion in the original design is greater than the white level value (first white level value) of the background formed on the nail T, that is, when the user's When the whiteness of the original design cannot be expressed even if the nail T is printed, preview images Pva1 and Pva2 corrected to white level values close to the color tone when actually printed are displayed on the display unit 72. can be made
Therefore, the user can correctly check the print image before printing, and can avoid printing on the nail T that is different from the image in advance. For this reason, it is possible to save time and effort for redoing printing.

Further, in this embodiment, the display data generating unit 814 functioning as the original image data correcting means determines that the second white level value in the preview original image Pvb is equal to the first white level of the print target area (area inside the nail contour TL). value, correction is performed to replace the second white level value with the first white level value, and the second white level value in the preview original image Pvb is the print target area (area inside the nail contour TL). is less than or equal to the first white level value, no correction is made.
In this way, only when the second white level value in the preview original image Pvb is larger than the first white level value in the print target area (area inside the nail contour TL) is targeted for correction, the entire design can be corrected. can be corrected only within a necessary range, and the preview images Pva1 and Pva2 closer to the actual print result (print image) can be displayed.

Further, in this embodiment, the display data generation unit 814 functioning as an original image data correcting unit calculates the second white level value in the preview original image Pvb and the first white level value of the print target area (area inside the nail contour TL). values are compared for each corresponding pixel, and correction is performed for each pixel.
In this way, by finely judging whether or not to perform correction for each pixel, it is possible to perform correction only within a necessary range, and to display preview images Pva1 and Pva2 that are closer to the actual print result (print image). can be done.

Further, in the present embodiment, the nail information detection unit 813 as a detection unit designates an area in the image of the nail T to be printed in which the white level value exceeds a predetermined threshold value as a print target area (area inside the nail contour TL). , is binarized and detected.
This makes it possible to easily and appropriately detect the print target area (the area inside the nail contour TL).

Further, in this embodiment, the display data generation unit 814 functioning as a white level comparison means converts the preview original image Pvb into monochrome data according to the luminance value level, and obtains the second white level value.
As a result, the second white level value of the preview original image Pvb, which is a color image, can be set to a value that can be compared with the first white level value of the print target area (the area inside the nail contour TL), White level values can be compared appropriately.

Also, in this embodiment, the preview image data is RGB data or YUV data.
Therefore, the preview images Pva1 and Pva2 displayed on the display unit are color images similar to the design printed on the nail T. FIG.
This makes it easier for the user to grasp the print image from the preview images Pva1 and Pva2.

Although the embodiments of the present invention have been described above, the present invention is not limited to such embodiments, and it goes without saying that various modifications are possible without departing from the scope of the invention.

For example, in this embodiment, as a method of comparing the white level value (ie, first white level value) in the nail image and the white level value (ie, second white level value) in the preview original image Pvb, described the case of converting an image into monochrome data using the luminance value (Y value) in the YUV method and comparing the white levels of each pixel. The method of comparing is not limited to this.
For example, colors may be compared by the value of lightness in the "Munsell color system" that expresses colors by the so-called three attributes of color (hue, lightness, saturation), or the color may be compared with the amount of white (W) + the amount of black (B )+pure color (F) may be used. Alternatively, white levels may be compared using the RGB color model. Various other techniques can be used.

Further, in the present embodiment, as a result of comparing the first white level value and the second white level value, the second white level value in the preview original image Pvb is the print target area (the inner area defined by the nail contour TL). area) is larger than the first white level value, the display data generation unit 814 as the original image data correcting means performs correction to replace the second white level value with the first white level value. Although exemplified, the correction by the original image data correcting means is not limited to this.
If the second white level value in the preview original image Pvb is greater than the first white level value of the print target area, correction is performed to lower the second white level value based on the first white level value. You can do it. How much to reduce is appropriately set. For example, considering the selected design, the degree of difference between the first white level value and the second white level value, etc., it is possible to obtain an appropriate value close to the first white level value. to lower the second white level value to .

In the present embodiment, the printing apparatus 1 includes the base head 41a and the design head 41b as the print heads 41, and the base is formed by printing with the base head 41a. is not limited to this.
For example, by preparing a printing device for design printing that has a print head that prints a design in color and a printing device that is dedicated to base printing and has a printing unit (print head, pen, etc.) that prints the base, After the base is formed on the nail T using the printing device, the design may be printed on the nail by holding the finger on the finger holding portion of the printing device for design printing. Further, the undercoat may be applied manually by a user or the like instead of being automatically formed using an apparatus.
If the base is formed by a device other than that for printing the design, or if the base is formed manually outside the device, the step of printing the base in step S23 in the flow chart shown in FIG. 4 is not required. Then, in step S22, the finger U corresponding to the nail T on which the base is formed outside the printing apparatus (for design printing) is set on the finger holding portion 6. As shown in FIG.

Further, in the present embodiment, the case where the printing device 1 prints on the nail in cooperation with the terminal device 7 is exemplified, but the printing device 1 is not limited to the one shown here, and the printing operation is completed by itself. It may be configured to
For example, in the present embodiment, the display unit 72 is provided on the terminal device 7 side, and the operation unit 71 on the terminal device 7 side is used for inputting a print start instruction, selecting a nail design, and the like. Alternatively, the printing apparatus 1 may be provided with a display unit, and input of various instructions may be performed through the operation unit 12 on the printing apparatus 1 side. In this case, a touch panel may be provided integrally with the display section of the printing apparatus 1 so that various input operations can be performed using the touch panel type operation section.
In this case, the display unit of the printing device serves as a display device to display the preview images Pva1, Pva2, and the like. If the printing apparatus has a display unit and a printing unit, the entire process from confirmation of the print image to print processing can be completed with a single apparatus, and the configuration can be simplified.

In the present embodiment, the nail design storage area 822 for storing nail design data is provided in the storage unit 82 of the terminal device 7 . It is not limited to being stored in the storage unit 82 and may be stored in the storage unit 32 of the printing apparatus 1 .
Further, nail design image data may be stored in a server device or the like that can be connected via a network line or the like so that the nail design data can be referred to by accessing the server device or the like.
By doing so, it is possible to select a design to be printed from a larger number of nail designs without increasing the capacity of the storage unit 82 or the like.

In the present embodiment, the nail information detection unit 813, the display data generation unit 814, and the print data generation unit 815 are provided in the terminal device 7 as the display device, and the controller 80 of the terminal device 7 controls the nail image from the nail image. Although the configuration for detecting nail information, generating display data, and generating print data has been exemplified, the configuration of the terminal device 7 is not limited to this.
For example, the control device 30 of the printing device 1 may be configured to perform these processes. In this case, a corresponding program is installed in the storage unit 32 or the like of the printer 1 side.

Also, a terminal device as a display device having display means (display unit 72) and the printing device 1 having a printing unit 40 for printing a design in a print target area may constitute a printing system.
In this case, detection of nail information, generation of data for printing, generation of data for display (generation and correction of data of a preview original image), display processing, printing processing, etc. can be performed by the printing device 1 and the terminal device 7 as appropriate. to share the load. By configuring in this manner, the load on the CPUs of the printing apparatus 1 and the terminal device 7 and the load on the storage units 32 and 82 can be distributed, and processing can be performed efficiently.

Further, in this embodiment, the print head 41 of the printing apparatus 1 is configured to include the inkjet print head 41, but the configuration of the print head 41 is not limited to this.
A head having a configuration different from that of the ink-jet print head 41, such as a syringe-type head or a pen-type head, may be provided.
In this case, it is also possible to print inks or liquid agents having a relatively high viscosity. Therefore, for example, the printer 1 may be configured to print a base ink such as white ink on the nail T. FIG.

Although several embodiments of the present invention have been described above, the scope of the present invention is not limited to the above-described embodiments, and includes the scope of the invention described in the claims and equivalent ranges thereof. .
The invention described in the scope of claims originally attached to the application form of this application is additionally described below. The claim numbers in the appendix are as in the claims originally attached to the filing of this application.
[Appendix]
<Claim 1>
display means;
detection means for detecting a first white level value, which is the white level of the print target area with the base applied;
original image data generation means for generating a preview original image by superimposing design data on the print target area displayed on the display means;
original image data correcting means for correcting the preview original image based on a comparison result between the first white level value of the print target area and a second white level value that is the white level of the preview original image;
display control means for controlling the display means to perform display based on preview image data after correction corrected by the original image data correction means;
A display device comprising:
<Claim 2>
white level comparison means for comparing the first white level value of the print target area and the second white level value, which is the white level of the preview original image;
2. The display device according to claim 1, wherein said original image data correcting means corrects said preview original image based on a comparison result by said white level comparing means.
<Claim 3>
3. The display device according to claim 2, wherein said white level comparison means converts said preview source image into monochrome data according to a luminance value level, and obtains said second white level value.
<Claim 4>
The original image data correcting means includes:
when the second white level value in the preview original image is greater than the first white level value in the print target area, the second white level value is adjusted based on the first white level value; Make a correction to lower
4. The method according to any one of claims 1 to 3, wherein no correction is performed when the second white level value in the preview original image is equal to or less than the first white level value in the print target area. or the display device according to item 1.
<Claim 5>
The original image data correcting means compares the first white level value of the print target area and the second white level value of the preview original image for each corresponding pixel, and performs correction for each pixel. The display device according to any one of claims 1 to 4, characterized by:
<Claim 6>
6. The method according to any one of claims 1 to 5, wherein the detection unit binarizes and detects an area in which a white level value exceeds a threshold in the image to be printed as the area to be printed. Display device as described.
<Claim 7>
7. The display device according to claim 1, wherein the preview image data is RGB data or YUV data.
<Claim 8>
a display device according to any one of claims 1 to 7;
a printing unit that prints a design on the print target area;
A printing device comprising:
<Claim 9>
A terminal device comprising the display device according to any one of claims 1 to 7;
a printing device including a printing unit that prints a design on the print target area;
A printing system comprising:
<Claim 10>
a detection step of detecting a first white level value, which is the white level of the print target area with the base applied;
an original image data generation step of superimposing design data on the print target area detected in the detection step to generate a preview original image;
a white level comparison step of comparing the first white level value of the print target area with a second white level value that is the white level of the preview original image;
an original image data correction step of correcting the preview original image based on the comparison result in the white level comparison step;
a display control step of controlling the display means to perform display based on the corrected preview image data corrected in the original image data correction step;
A display method comprising:
<Claim 11>
In the computer of the display device comprising the display means,
a detection function that detects a first white level value, which is the white level of the print target area with the base applied;
an original image data generation function for generating a preview original image by superimposing design data on the print target area detected by the detection function;
a white level comparison function that compares the first white level value of the print target area with a second white level value that is the white level of the preview original image;
an original image data correction function for correcting the preview original image based on the comparison result of the white level comparison function;
a display control function for controlling the display means to perform display based on corrected preview image data corrected by the original image data correction function;
A program characterized by realizing

1 printing device 6 finger holding unit 7 terminal device 31 control unit 32 storage unit 40 printing unit 41 print head 313 print control unit 812 display control unit 813 nail information detection unit 814 display data generation unit 815 print data generation unit 822 design storage area 823 Nail information storage area TL Nail contour T Nail U Finger

Claims (10)

display means;
detection means for detecting a print target area on a user's nail ;
original image data generating means for generating a preview original image in which design image data is superimposed on the detected print target area;
A comparison result between a first white level value that is the whiteness level of the printing target area in a state where the base ink is applied and a second white level value that is the whiteness level of the preview original image. original image data correcting means for correcting the preview original image based on
display control means for controlling the preview image corrected by the original image data correction means to be displayed on the display means;
A display device comprising: white level comparison means for comparing the first white level value and the second white level value for each corresponding pixel;
2. The display device according to claim 1, wherein the original image data correction means corrects the preview original image for each corresponding pixel based on the comparison result by the white level comparison means. the detection means detects the first white level value;
3. The display device according to claim 2, wherein the white level comparing means acquires the second white level value by converting the preview original image into monochrome data according to the luminance value level. The original image data correcting means includes:
if the second white level value is greater than the first white level value, performing a correction to lower the second white level value based on the first white level value;
4. The display device according to any one of claims 1 to 3, wherein no correction is performed when the second white level value is less than or equal to the first white level value. 5. The detection means detects the print target area by binarizing an area in which a white level value exceeds a threshold in an image of the print target. 1. The display device according to item 1. 6. The display device according to any one of claims 1 to 5, wherein the first white level value and the second white level value are values obtained based on luminance values. . a display device according to any one of claims 1 to 6;
a printing unit that prints on the print target area;
A printing device comprising: A terminal device comprising the display device according to any one of claims 1 to 6;
a printing device including a printing unit that prints on the print target area;
A printing system comprising: a detection step of detecting a print target area on the user's nail ;
an original image data generating step of generating a preview original image in which design image data is superimposed on the print target area detected in the detecting step;
A first white level value, which is the level of whiteness of the printing target area in a state where the base ink is applied, is compared with a second white level value, which is the level of whiteness of the preview original image. a white level comparison step;
an original image data correction step of correcting the preview original image based on the comparison result in the white level comparison step;
a display control step for controlling display means to display the corrected preview image corrected in the original image data correcting step;
A display method comprising: In the computer of the display device comprising the display means,
a detection function for detecting a print target area on a user's nail ;
an original image data generation function for generating a preview original image in which design image data is superimposed on the print target area detected by the detection function;
A first white level value, which is the level of whiteness of the printing target area in a state where the base ink is applied, is compared with a second white level value, which is the level of whiteness of the preview original image. a white level comparison function;
an original image data correction function for correcting the preview original image based on the comparison result of the white level comparison function;
a display control function for controlling the preview image corrected by the original image data correction function to be displayed on the display means;
A program characterized by realizing

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