JP2014051039A - Printing method and printing tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method capable of expanding a printing range to a three-dimensional object and a tool used for the method.SOLUTION: The printing method by an inkjet type printer comprises a printing tool 1 having a fixing surface for fixing printed matter and a printing part capable of installing the printing tool 1, and the fixing surface of the printed matter is constituted of an inclined plane inclined to a moving surface of a nozzle possessed by the inkjet type printer, and prints on a surface of a closely adjacent printed matter by newly opposing to a nozzle part by replacing a printing-unexecuted part with a printing-executed part by reversal of the printed matter fixed to the inclined plane, rotation of the fixing surface itself for fixing the printed matter or installation to the other printing tool made different in the inclining direction of the fixing surface, after printing, by printing on the surface of the closely adjacent printed matter by opposing to the nozzle part, after fixing the printed matter to the inclined plane.

Description

  The present invention relates to a printing method and a printing jig.

Conventionally, the invention described in Patent Document 1 is known regarding a printing method and a printing jig for a three-dimensional face molding. The present invention relates to a system or the like for printing a face image on a three-dimensional face molding through a computer and an ink jet printer, and the surface of the substrate to be printed is three-dimensionally formed on the upper surface of a flat plate-like printing jig. A three-dimensional facial molded body that is formed automatically is mounted, and printing is performed on the surface of the three-dimensional three-dimensional facial molded body using an ink jet printer.
The three-dimensional face molded body is formed as a three-dimensional modeled object that imitates a part of the face of the doll body, and the surface of the three-dimensional modeled object is formed with eyes, mouth, A face image such as a nose is printed. Then, by fitting the printed three-dimensional face molded body into the head of the character main body, the head of the doll body provided with face images such as eyes, mouth, and nose by printing is formed.

JP 2008-62634 A

In the above example, in order to form the head of the doll body on which the face is printed, the face image is printed by providing a separate three-dimensional face formed body, and the face image is printed. Is inserted into the head of the character body to form the head of the doll body.
In this way, the head of the doll body is divided into two parts, and when printing on the surface of a three-dimensional object, it is between the nozzle of the ink jet printing machine that moves horizontally and the three-dimensional printing surface. This is because a difference in height occurs, and a portion exceeding the printing limit is generated in the interval between the nozzle and the printing surface, and a portion where printing cannot be performed occurs.
In addition, it is useless to construct a three-dimensional object with a plurality of parts only for printing from the viewpoint of design and product production. The present invention has been invented in view of the circumstances, and a method capable of performing printing on the surface of a three-dimensional object using an ink jet printer without dividing the three-dimensional object to be printed. It aims at providing the jig | tool used for.

In addition, in printing using an ink jet printer, if the distance from the nozzle of the printer exceeds about 2 mm, the ink diffuses and the printing quality deteriorates. It was possible to print only within the range that falls within the height difference. Therefore, the three-dimensional object can be printed only on a three-dimensional object that is a small article or has a slight rise.
This invention is invented in view of the said situation, Comprising: The objective also provides the jig | tool used for the method which can expand a printing range, using the ink jet type printing machine similar to the past, and the said method. One thing.

In order to solve the above problems, the present invention has the following configuration. That is,
A printing method using an ink jet printing machine having a printing jig having a fixing surface for fixing a three-dimensional printing material and a printing unit to which the printing jig can be attached,
The fixing surface of the printing jig is constituted by an inclined surface inclined with respect to the nozzle moving surface of the ink jet printing press,
After fixing the printing material on the inclined surface, printing is performed on the surface of the printing material facing and close to the nozzle portion,
After the printing, the printing is performed by reversing the printed material fixed on the inclined surface, rotating the fixed surface itself fixing the printed material, or mounting on another printing jig in which the inclined direction of the fixed surface is different. It replaces the performed part and the part where printing is not performed, and it prints in the part which is not printing of the to-be-printed material which faced the nozzle part newly and adjoined.
In addition, a printing jig for a three-dimensional printing material that can be mounted on a printing unit of an ink jet printing press,
While having a fixed surface on which the substrate can be detachably mounted,
The fixed surface is inclined with respect to the nozzle moving surface of the ink jet printing press.

The present invention, when printing on the surface of a three-dimensional printed material using an ink jet printing machine, by using a printing jig, the printing surface (printing part) facing the nozzle part of the printing machine. It can be changed. In other words, it is possible to divide the printing range (printed surface) of a three-dimensional object that cannot be printed at a time because the distance from the nozzle portion is long, and to divide it into a plurality of areas, depending on the number of divisions of the area. Thus, the printing area facing the nozzle portion is changed stepwise.
The simplest example is that, as described in the mode for carrying out the invention, printing is performed with the substrate to be fixed on a mounting surface inclined at 45 degrees, and after printing one surface, the distance from the nozzle portion is long. The area where printing is not performed is opposed to the nozzle portion so that printing can be performed by changing the printed material (or reattaching it to another printing jig or rotating the printed material by a mechanism provided in the printing jig). Is.
A general ink-jet printing machine ejects ink onto a surface of a printing material that moves with a constant feed amount by a nozzle portion that reciprocates on one axis. Therefore, since printing is usually performed on a two-dimensional plane, printing is performed on a three-dimensional surface by a three-dimensional operation such as a painting machine having a robot arm that is operated by an advanced program. It is not a thing.
However, according to the present invention, even when a flat printing press is used, printing is performed in a plurality of times while changing the direction of the substrate within the reachable range of the ink that does not deteriorate the print quality. By carrying out, it has the effect that it can print on the surface of a solid thing cheaply and easily.

It is an external view showing an example of a printing jig concerning the present invention. It is explanatory drawing showing an example of the to-be-printed material which prints by this invention. It is an external view showing the details of the printing jig concerning the present invention. It is explanatory drawing showing the printing jig | tool and to-be-printed material which concern on this invention. It is explanatory drawing for demonstrating the printing method which concerns on this invention. It is an external view showing the other example of the printing jig which concerns on this invention. It is the photograph showing the further another example of the printing jig concerning the present invention.

FIG. 1 shows a printing jig 1 used in the printing system according to the present invention, and FIG. 2 shows an explanatory diagram of a doll head model 2 formed as a printing material to be mounted on the printing jig 1. .
The printing jig 1 has a tray 3 formed in a flat plate shape. The tray 3 is formed of a metal plate such as aluminum or iron, and is formed so as to be detachably fixed at a printing position in the printing apparatus.
A plurality of fixtures 5 are attached to the upper surface of the tray 3. As an example, the fixture 5 is formed in a shape in which a thin metal plate is bent along the longitudinal direction by sheet metal processing. One of the bent metal plates is used as a fixing portion for the tray 3, and the other is used as a mounting surface 4 inclined at an angle of 45 degrees with respect to the surface of the tray 3. The head model 2 is detachably attached to the attachment surface 4 at a set position and posture with high accuracy.

A plurality of mounting portions 6 for mounting the head model 2 are provided on the mounting surface 4. The attachment part 6 which concerns on this Embodiment is formed as a hole (engaged part) formed so that a fixed condition may be satisfy | filled as an example. The certain condition is a condition necessary for arranging a plurality of head models 2 to be printed in a predetermined position and posture.
In order to arrange the substrate to be printed at a predetermined position and posture, the hole serving as the attachment portion 6 constitutes a fitting portion that matches the external characteristics of the substrate to be printed (head model 2). The optimum hole forming method is a process using a laser processing machine, and holes having the same shape can be accurately formed at the same pitch.
In addition, the hole formed as the attachment portion includes a hole having a notch with an open upper end as in a printing jig shown in FIG. 7 described later.

For example, the head model 2 is formed in a columnar shape having a diameter of about 12 mm, and is formed as a head of a doll to be mounted on a separately formed body part. FIG. 2 shows the head model 2, wherein (a) is a front view, (b) is a side view, (c) is a rear view, (d) is a plan view, and (e) is a bottom view. Yes. Note that the shape is not limited to a cylindrical shape, and the head model is a three-dimensional shape including eyes, nose, mouth, etc. as shown in FIG. There is no problem.
The head model 2 has a columnar part 9 imitating the top of the head and a protrusion (engagement part) 7 provided on the back side. The projection 7 is fixed to the mounting portion 6 formed as a hole with high accuracy, thereby fixing the position and posture of the head model 2 on the tray 3 with high accuracy.

The fitting structure between the head model 2 and the mounting portion 6 will be described in more detail. On the back surface of the head model 2, a flat portion 8 that abuts on the mounting surface 4 except for the columnar portion 9 is provided. The flat part 8 has the effect | action which maintains the height to the head model 2 surface with respect to the said mounting surface 4 with sufficient precision by contacting the surface of the mounting surface 4. FIG.
Further, the position of the mounting portion 6 (hole) provided on the mounting surface 4 is provided at a height determined with reference to the bottom surface of the tray 3. Since the bottom surface of the tray 3 serves as a reference surface when mounted on an ink jet printing press used for printing, the position of the mounting portion 6 (hole) is determined with reference to the bottom surface of the tray 3. Yes. As a result, the position and orientation of the head model 2 are accurately maintained inside the printing apparatus.

  The head model 2 including the protrusion 7 and the columnar portion 9 is fixed on the mounting surface 4 inclined by the mounting portion 6. Further, the relationship between the projection 7 and the outer shape of the head model 2 and the mounting portion 6 is determined so that the head model 2 does not tilt or rotate in a plane parallel to the mounting surface 4. Thus, by having a structure in which the printing part of the head model 2 and the nozzles of the printing machine are appropriately arranged, a predetermined amount is formed on the surface of the head model 2 by the printing device driven by program control. Printing is to be performed.

As an example, specific shapes of the fixture 5 and the attachment portion 6 (hole) will be described. FIG. 3A is a plan view of a state in which the inclined mounting surface 4 of the fixture 5 is viewed from a direction perpendicular to it, and FIG. 3B is a side view of the fixture 5 corresponding to FIG. 3A. ing.
Each upper edge 10 of the plurality of fixtures 5 is formed such that the height from the bottom surface of the tray 3 is constant while being fixed to the tray 3. Since the nozzle of the printing machine moves horizontally without moving up and down, the position of the upper edge 10 is determined so that the nozzle and the fixture 5 do not come into contact with each other during this horizontal movement.

The hole shape of the attachment portion 6 formed as a hole constrains the position of the head model 2 in both the height direction and the lateral direction (longitudinal direction), and suppresses rotation on the attachment surface 4. It has a shape intended for that.
For this purpose, the mounting shape of the mounting portion 6 first has two parallel side edges 11 (11a, 11b) provided parallel to the bottom surface of the tray 3. The interval between the two parallel side edges 11 coincides with the width of the protrusion (engagement portion) 7 on the back of the head model 2 so as to be fitted.
Moreover, the bulging part 12 of the shape which expanded the width | variety to the up-down direction is provided in the both ends of said two parallel parts. The size of the bulging portion 12 is formed such that the cylindrical portion 9 of the mounted head model 2 just fits.

  When the head model 2 is mounted on the mounting portion 6 having the above-described nuclei shape, a rectangular projection 7 having two parallel surfaces of the head model 2 is formed on the parallel side edges 11 (11a, 11b) of the mounting portion 6. The cylindrical portion 9 contacts the inner surface, and the cylindrical portion 9 contacts the inner surface of the bulging portion 12. By this engagement, as shown in FIG. 4, the head model 2 is fixed without moving on the mounting surface 4 of the fixture 5. Further, in the present embodiment, the attachment portion 6 is formed in a symmetrical shape so that the same mounting is possible even if the orientation of the head model 2 is reversed 180 degrees.

Next, an actual printing example will be described with reference to FIG.
First, the head model 2 is mounted on the mounting surface 4 of the fixture 5. Since the attachment surface 4 is formed as an inclined surface inclined by 45 degrees, the head model 2 mounted on the attachment surface 4 is also attached in an inclined state. For this reason, the half surface 13, which is approximately half the area of the surface of the head model 2 mounted in an inclined state, faces upward as a printing surface.
Next, the tray 3 on which the head model 2 is mounted is mounted on the ink jet printer. The ink-jet printing machine performs printing by ejecting ink downward while horizontally driving the nozzle P according to a program. Since the ink ejected from the nozzle P diffuses as the distance from the nozzle P increases, the print quality significantly deteriorates if the distance is too far. In the ink jet type printing machine used in the present invention, if the distance from the nozzle P exceeds 2 mm, the print quality deteriorates due to the scattering of the ink. Therefore, the distance H2 from the nozzle P does not exceed 2 mm in the region to be printed at a time. It is a range.
Further, a distance H1 from the nozzle P to the uppermost point of the fixture 5 is always provided so as not to damage the printing press.

The printing method according to the present invention enables printing on a three-dimensional surface having a height difference exceeding the printing distance even if the printing distance H2 from the nozzle P is short as described above. is there.
When printing is performed in the state shown in FIG. 5A, printing can be performed on the half surface 13 which is substantially half of the cylindrical surface. In the illustrated example, eyes, nose and mouth are printed on half of the face of the head model 2. After the printing of the half surface is completed, the head model 2 is once removed from the fixture 5 and the orientation is changed and mounted again to perform printing.
FIG. 5B shows a state in which the orientation of the head model 2 is changed and the tray 3 is mounted after the half surface 13 is printed. When the orientation of the head model 2 is reversed, the half surface 14 that was not in the printable range in the previous step can be exposed to a position facing the nozzle P. Since the half surface 14 is an area provided at a position where the distance H2 from the nozzle P does not exceed 2 mm, printing is possible.

Of course, the ink jet type printing machine also performs printing based on the print data divided according to the printing area, and forms a single print by integrally printing each half. It has become. When the printing of each half surface is completed as described above, a face picture is printed in an area where about half of the circumference of the head model 2 is tightened.
Further, in the present embodiment, the printed material before changing the orientation and the printed material after changing the orientation are mounted on one tray 3, but the printed material has a complicated three-dimensional shape. In such a case, there is no problem even if a tray unique to each direction is provided. In other words, when the substrate has a complicated shape, printing may be performed by mounting on a different tray for each side.
Further, in the present embodiment, a mounting projection (engaging portion) 7 is provided on the back surface of the head model 2, and a hole corresponding to the mounting surface 4 of the printing jig 1 is formed. However, the shape of the head model is not limited to the shape shown in the drawings, and may be various three-dimensional shapes, and may not be provided with mounting protrusions. In this case, a hole for fitting with the external shape of the head model may be formed in the mounting surface 4 or a guide mounting aid that does not interfere with printing may be provided together with the hole.

In the present embodiment, the inclination angle of the mounting surface is 45 degrees, but the angle is not limited to this angle, and the angle can be changed variably according to the shape of the substrate. There is no problem.
FIG. 6 shows another example of the printing jig in which the mounting surface is formed to be rotatable. The printing jig has a tray 3a formed in a flat plate shape. The tray 3a is formed of a plate-like body such as resin, aluminum, or iron, and is formed so as to be detachably fixed at a printing position in the printing apparatus.
A plurality of fixtures 15 are attached to the upper surface of the tray 3a. The fixture 15 is provided with an attachment surface 4a formed as a narrow metal plate as an example, and is bent and supported at both ends by a shaft portion 16 of the tray 3a. On the attachment surface 4a, an attachment portion for the printing material 2a by holes or the like is provided in the same manner as the attachment surface 4 described above.

  Then, similarly to the above-described example, the substrate 2a is attached to the attachment surface 4a and then mounted on the printing machine, and predetermined printing is performed on the half surface 13a facing the nozzle side (see FIG. 6a). Next, when the fixture 15 provided with the mounting surface 4a is rotated in the R direction around the shaft portion 16, the half surface 14a moves to the nozzle side. By printing in this state, the remaining half surface 14a is also printed. (See FIG. 6b). In this way, the substrate 2a can be rotated by rotating the fixture provided with the mounting surface on the tray, so that the two printing surfaces (half surface 14a and half surface 14b) are selectively opposed to the nozzles. It can be made to. Of course, the printing machine divides the print image and corrects the print position and orientation according to the divided print areas.

  When the printing method described above is used, even if the printing distance H2 from the nozzle P to the printing surface is limited to a certain range, printing is performed in multiple times while changing the orientation of the printing material. Thus, printing can be performed on the surface of a three-dimensional object having a height difference exceeding the printing distance.

FIG. 7 is a photograph showing a printing jig according to another example and a head model to be printed. 7A is a perspective view of the printing jig 20 with the head model 21 mounted thereon, FIG. 7B is a perspective view of the printing jig 20 shown in FIG. 7A from the other direction, and FIG. FIG. 7 d is a front view of the head model 21. The external features of the printing jig 20 are the same as those of the printing jig 1 described above, and the positional relationship between the head model 21 and the printing apparatus is also substantially the same as in the above example.
The printing jig 20 has a hole 22 as an attachment part of the head model 21. The head model 21 in this example has a complicated shape having protruding portions such as corners protruding upward and laterally. The shape of the hole 22 is formed in a shape that matches the head model 21 so that it can be fitted to the square portion. Further, the printing jig 20 according to the present embodiment has a shape in which the notch 23 is provided in a part of the hole 22 and an opening is provided in the upper edge portion because the shape of the square portion is large.

A rectangular projection 24 is provided on the back surface of the head model 21, and the projection 24 is fitted to an inner edge 25 of a rectangular portion formed as a part of the hole 22. By fitting the projection 24 and the inner edge 25, the head model 21 is fixed on the printing jig 20 with high accuracy.
In the printing (painting) of the head model 21 using the printing jig 20 in the example, the distance from the nozzle tip of the printing apparatus to the printing surface constituting the face half surface portion is approximately within 2 mm. . Then, coloring is performed according to a program that matches the uneven shape of the head model 21 surface. When the printing on the half surface is completed, the head model 21 is mounted on a printing jig for a reverse surface (not shown) prepared separately, and the remaining half surface is similarly colored. As described above, even with a substrate having a complicated surface shape, division printing can be performed by using a printing jig.

  The present invention can be used in an apparatus and a method for printing on the surface of a three-dimensional object.

DESCRIPTION OF SYMBOLS 1 Printing jig 2 Head model 3 Tray 4 Mounting surface 5 Fixing tool 6 Mounting part 7 Protrusion (engagement part)
8 Flat part 9 Cylindrical part 10 Upper edge 11 (11a, 11b) Side edge 12 Swelling part 13 Half face 14 Half face H1 Distance H2 Printing distance P Printing machine (nozzle)

Claims (2)

A printing method using an ink jet printing machine having a printing jig having a fixing surface for fixing a three-dimensional printing material and a printing unit to which the printing jig can be attached,
The fixing surface of the printing jig is constituted by an inclined surface inclined with respect to the nozzle moving surface of the ink jet printing press,
After fixing the printing material on the inclined surface, printing is performed on the surface of the printing material facing and close to the nozzle portion,
After the printing, the printing is performed by reversing the printed material fixed on the inclined surface, rotating the fixed surface itself fixing the printed material, or mounting on another printing jig in which the inclined direction of the fixed surface is different. A printing method characterized in that printing is performed on a portion where printing is not performed on a printed material that is newly opposed to and close to the nozzle portion by replacing the portion that has been printed and a portion that has not been printed. A printing jig for a three-dimensional substrate that can be mounted on a printing unit of an ink jet printing press,
While having a fixed surface on which the substrate can be detachably mounted,
A printing jig for a printing material, wherein the fixed surface is inclined with respect to a moving surface of a nozzle of an ink jet printing press.