JP5164909B2 - Printing method and substrate - Google Patents

Description

  The present invention relates to a printing method and a printing medium, and more particularly, to a printing method in which a printing surface is divided into a plurality of regions and printed, and a printing medium printed by the printing method.

  Conventionally, in the pad printing, the gravure printing, the screen printing, etc., a device for improving the printing system has been made. For example, the inventor of the present invention discloses an invention that improves printing accuracy and enables multicolor printing by combining a relief printing original plate with a printing pad (see, for example, Patent Document 1).

JP-A-2-239972 (page 8-9, FIG. 3)

The invention disclosed in Patent Document 1 has a remarkable effect when printing a flat surface or a curved surface at a time.
However, for example, when the shape of the printing medium is complicated, for example, when a recessed portion is formed in the printing medium, there is a problem that it is difficult to print in the recessed portion.
Also, when printing multiple times, for example, when printing the northern and southern hemispheres of the sphere separately, or when printing the sides of the rectangular parallelepiped separately, the edge of the print area (the equator of the sphere) In addition, there is a problem that an overlapping range of printing occurs in the ridge line portion of the rectangular parallelepiped, and the color tone of the overlapping range becomes dark.

The present invention solves the above problems, and a first object of the invention is to provide a printing method capable of printing on a printing medium having a complicated shape (for example, having a concave portion).
A second object of the present invention is to provide a printing method in which, when printing is performed in a plurality of print areas, even if a print overlap area occurs at the end of the print area, the color tone of the overlap area does not become dark. There is. Furthermore, a third object is to obtain a printing medium printed by the printing method.

( 1 ) Further, in the printing method according to the present invention, the printing surface of the printing medium is divided into a plurality of small printing surfaces such that the respective boundaries overlap with each other with a predetermined width, and printing is performed on the printing surface. Dividing the pattern to be printed into small patterns to be printed on each of the small print surfaces,
Creating a small development pattern in which the small design is developed on a plane;
The amount of ink in a predetermined width of the boundary along the small developed pattern on the small printing surface corresponding to each of the small printing original plates corresponding to each of the plurality of small printing surfaces is determined by the predetermined amount of the boundary. A step of placing ink so as to be less than the amount of ink in a range excluding the width of
A step of transferring the ink to each small printing blanket by pressing a small printing blanket corresponding to each of the plurality of small printing surfaces against the corresponding small printing original plate;
Printing the pattern on the printing surface by pressing the plurality of small printing blankets against the corresponding small printing surface, and printing the small pattern on the small printing surface; It is characterized by having.

(2) the Oite to (1), the plurality of small printing blanket, respectively pressed against the normal line parallel to the small printing original plate of the corresponding small printing original plate, and a small printing surface, each of which corresponds The sheet is pressed against the surface to be printed in parallel with the average normal line.

( 3 ) In (1) or (2) , each position of the plurality of small printing surfaces is stored, and the small printing blanket corresponding to each of the plurality of small printing surfaces is sequentially held. And a step of printing the pattern using a multi-axis robot that presses the gripped small printing blanket against the small print surface corresponding to the blanket.

( 4 ) In the above ( 3 ), the small print surface is a side surface or a bottom surface of a recess recessed into the print body,
The small printing blanket corresponding to the side surface or the bottom surface can freely enter the concave portion.

( 5 ) In the above ( 4 ), the small print surface is a side surface or a bottom surface of a recess recessed into the print body,
A gripping portion of the multi-axis robot that grips the small printing blanket corresponding to the side surface or the bottom surface can enter the concave portion.

( 6 ) The printed material according to the present invention is characterized by having a printed surface printed by the printing method according to any one of (1) to ( 5 ).

(I) the printing method according to the present invention, the boundary of their respective by using the small printing blanket corresponding to the small picture divided so as to overlap at a predetermined width, reducing the amount of ink overlapping predetermined width Since the pattern is printed on the printing surface, it is possible to print on the printed body having a complicated shape, and the boundary between the small patterns becomes dark or there is no pattern at the boundary (on the printed body). There are no streaks in the background).
In addition, the method of providing a difference in the amount of ink is not limited, and the number of halftone dots, the size of the halftone dots, the amount of ink per unit area, etc. may be varied.
( Ii ) Further, since the plurality of small printing blankets are pressed in parallel with the normal line of the corresponding small printing original plate and in parallel with the average normal line of the corresponding small printing surface, Accurate pattern can be printed.

( Iii ) Since a pattern is printed using a multi-axis robot that presses a small printing blanket against a corresponding small surface to be printed, it is possible to print an accurate pattern on a printed material having a complicated shape.
( Iv ) Further, since the small printing blanket can enter the concave portion recessed in the printing medium, it is possible to print a pattern (or a part of the pattern) on the side surface or bottom surface of the concave portion.
( V ) Since the small printing blanket and the gripping portion of the multi-axis robot that grips the small printing blanket can freely enter the concave portion, the degree of freedom of the shape of the small printing blanket is increased and the side or bottom surface of the concave portion is Accurate printing can be performed on the pattern (or part of the pattern).

( Vi ) Since the printing medium according to the present invention has a printing surface printed by a printing method that exhibits any of the effects (i) to ( v ), the printed material has a complicated shape, and the entire surface or An exact pattern is printed on a part.

5 is a flowchart for explaining a printing method according to the first embodiment of the invention. Sectional drawing shown for every printing process explaining the printing method which concerns on Embodiment 1 of this invention. Sectional drawing shown for every printing process explaining the printing method which concerns on Embodiment 1 of this invention. Sectional drawing shown for every printing process explaining the printing method which concerns on Embodiment 1 of this invention. Sectional drawing which shows typically the to-be-printed body which concerns on Embodiment 2 of this invention. The top view which shows typically the point which divides | segments the pattern in the printing method which concerns on Embodiment 3 of this invention. FIG. 7 is a plan view schematically showing an enlarged example of the arrangement of halftone dots in a small development pattern in the printing method shown in FIG. 6. FIG. 7 is a plan view schematically showing an enlarged print overlapping range in the printing method shown in FIG. 6.

[Embodiment 1]
1 to 4 illustrate a printing method according to Embodiment 1 of the present invention. FIG. 1 is a flowchart, and FIGS. 2 to 4 are cross-sectional views for each printing process. 2 to 4 schematically show partly exaggerated, and the present invention illustrates the shape of the printed body and the form (shape, distribution, etc.) of the pattern (ink). It is not limited.

In FIG. 2A, the printing surface 10 (position 11 to position 18) of the printing material 100 is replaced with a plurality of small printing surfaces 1a, 1b1, 1b2,... 1f (hereinafter referred to as “small printing surfaces”). 1 ”) (S1 shown in FIG. 1), a pattern 20 (not shown) to be printed on the printing surface 10 is printed on each of the small printing surfaces 1 by small patterns 2a, 2b1, 2b2... 2f (hereinafter each referred to as “small picture 2”) (S2 shown in FIG. 1).
Then, small developed patterns 3a, 3b1, 3b2,... 3f (hereinafter referred to as “small developed patterns 3”) are created (S3 shown in FIG. 1).

In FIG. 2B, the small printing original plates 30a, 30b,... 30f (hereinafter referred to as “small printing original plate 30”) corresponding to the small printing surfaces 1 respectively. Ink is placed along the small developed pattern 3 on the printing surface 1 (S4 shown in FIG. 1).
At this time, ink is placed on the small printing original plate 30b along the small unfolded pattern 3b1 and the small unfolded pattern 3b2. The method of placing the ink is not limited, and ink may be placed on the convex portion of the relief plate on which the small development pattern 3 is formed or the concave portion of the intaglio plate, or printing on a flat plate (inkjet printer, screen printing, The ink may be applied by gravure printing, offset printing, or the like.

In FIG. 2C, the small printing blankets 40a, 40b,... 40f (hereinafter referred to as “small printing blankets 40”) corresponding to the small printing surfaces 1 respectively correspond to it. The ink is pressed onto the small printing original plate 30 to be transferred, and the ink is transferred to each small printing blanket 40 (S5 shown in FIG. 1).
At this time, it is pressed parallel to the normal line of the small printing original plate 30. The small printing blanket 40 may be pressed against the corresponding small printing original plate 30 using a multi-axis robot.

  In (d) of FIG. 2, the small printing blanket 40 that has been pressed and separated after pressing is applied to the small printing blanket patterns 4 a, 4 b,. Ink adheres along the blanket pattern 4).

In FIG. 3A, the small printing blanket 40a is pressed against the small print surface 1a to which the small printing blanket 40a corresponds, and the small pattern 2a is printed thereon (S6 shown in FIG. 1).
At this time, the small printing blanket 40a is held by an arm 50 of a multi-axis robot (not shown), accurately positioned, and pressed parallel to the normal line at the approximate center of the small printing surface 1a (indicated by an arrow). ing.

3B, the small printing blanket 40b is pressed against the small printing surface 1b1 and the small printing surface 1b2 to which the small printing blanket 40b corresponds, and the small picture 2b1 and the small picture 2b2 are printed thereon (FIG. 1). S6).
At this time, the small printing blanket 40b is gripped and accurately positioned by an arm 50 of a multi-axis robot (not shown), and the normal line at the approximate center of the small print surface 1b1 and the normal at the approximate center of the small print surface 1b2. It is pressed parallel to one of the normals to the line, or parallel to the line located in the middle of both normals (indicated by arrows).

In FIG. 4A, the small printing blanket 40c is pressed against the small print surface 1c to which the small printing blanket 40c corresponds, and the small pattern 2c is printed thereon (S6 shown in FIG. 1).
At this time, the small printing blanket 40c is held by an arm 50 of a multi-axis robot (not shown), enters the concave portion 101 of the printing medium 100, is accurately positioned, and is a normal line at the approximate center of the small printing surface 1c. It is pressed parallel to (indicated by the arrow).
In FIG. 4A, the tip of the arm 50 that grips the small printing blanket 40c penetrates into the recess 101, but the present invention is not limited to this, and the small printing blanket is not limited thereto. A part (upper part in the drawing) of 40 c may be gripped so that the tip of the arm 50 does not enter the recess 101.

In FIG. 4B, the small printing blanket 40d is pressed against the small printing surface 1c to which the small printing blanket 40d corresponds, and the small pattern 2c is printed thereon (S6 shown in FIG. 1).
At this time, the small printing blanket 40d is held by the arm 50 of a multi-axis robot (not shown), enters the concave portion 101 of the printing medium 100, is accurately positioned, and is a normal line at the approximate center of the small printing surface 1d. It is pressed parallel to (indicated by the arrow).

Hereinafter, similarly, the small printing blankets 40e and 40f are pressed against the small print surfaces 1e and 1f corresponding to the blankets 40e and 40f, and the small patterns 2e and 2f are printed thereon.
Therefore, the pattern 20 is printed on the printing surface 10 of the printing medium 100 by printing such a series of small patterns 2. At this time, the small pattern 2 is accurately positioned by the arm 50 of the multi-axis robot, and the recess 101 is also printed.
In the above, the small printing blanket 40 is individually held and the small pattern 2 is printed separately, but a plurality of small patterns 2 are printed almost simultaneously using a plurality of arms. Also good. Further, the order of printing the small pattern 2 is not limited.
Furthermore, the present invention is not limited to using a multi-axis robot. For example, instead of a multi-axis robot, a means having a positioning function and a pressing function may be used, or a positioning mechanism may be provided on the small printing blanket 40 or the like and pressed manually.

[Embodiment 2]
FIG. 5 is a cross-sectional view schematically showing a substrate to be printed according to Embodiment 2 of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and a part of the description is omitted.
In FIG. 5, the printing medium 200 is the same as the printing medium 100 printed with the pattern 20 by the printing method described in the first embodiment. That is, small patterns 2c, 2d, and 2e, which are part of the pattern 20, are also printed on the recess 101.

[Embodiment 3]
6 to 8 illustrate a printing method according to the third embodiment of the present invention. FIG. 6 is a plan view schematically showing a procedure for dividing the pattern, and halftone dots in the small developed pattern of FIG. FIG. 8 is a plan view schematically showing an enlarged print overlapping range. 6 to 8 are schematically shown, and the present invention is not limited to the illustration of the shape of the printing medium and the form (shape, distribution, etc.) of the halftone dots. In addition, the same reference numerals are given to the same or equivalent parts as in the first embodiment, and a part of the description is omitted.

6 to 8, the printing surface 10 of the printing medium 100 is divided into a plurality of small printing surfaces... 1c, 1d, 1e... So that the respective boundaries overlap each other with a predetermined width. (Similar to S1 shown in FIG. 1), small patterns 20c, 2d, 2e,..., 2b, 2d, 2e,. (According to S2 shown in FIG. 1).
Then, small unfolded patterns... 3c, 3d, 3e... Are developed by developing each of the small patterns... 2c, 2d, 2e... In a plane (according to S3 shown in FIG. 1).
... Small print patterns corresponding to each of the small printed surfaces... 1c, 1d, 1e... 30c, 30d, 30e. Ink is applied along 3d, 3e,... (According to S4 shown in FIG. 1).

At this time, for example, in the small printing original plate 30c, an enlarged small developed pattern 3bcd obtained by adding a boundary range 3dc equivalent to a predetermined width in contact with the small developed picture 3c of the small developed picture 3d to a range equivalent to the small developed picture 3c. Ink is put along.
A boundary range 3cd equivalent to a predetermined width in contact with the small development pattern 3d of the small development design 3c and a boundary range 3dc equivalent to a predetermined width in contact with the small development design 3c of the small development design 3d are placed in an overlapping range 5cd. The amount of ink is smaller than the amount of ink placed in the inner range 3cc obtained by removing the overlapping range 5cd from the range equivalent to the enlarged small developed pattern 3bcd (see FIG. 7A).

Similarly, for example, in the small printing original plate 30d, a boundary range 3cd equivalent to a predetermined width in contact with the small development pattern 3d of the small development pattern 3c and a small development of the small development pattern 3e are in a range equivalent to the small development pattern 3d. Ink is placed along a range equivalent to the enlarged and small developed pattern 3cde obtained by adding a boundary range 3ed equivalent to a predetermined width in contact with the pattern 3d.
Then, the amount of ink placed in the overlapping range 5cd, the boundary range 3de equivalent to the predetermined width in contact with the small expanded pattern 3e of the small expanded pattern 3d, and the predetermined width in contact with the small expanded pattern 3d of the small expanded pattern 3e are equal. The amount of ink placed in the overlapping range 5de combined with the boundary range 3ed is smaller than the amount of ink placed in the inner range 3dd excluding the overlapping range 5cd and the overlapping range 5de from the range equivalent to the enlarged and small developed pattern 3cde. (See FIG. 7B).

That is, for example, the number of halftone dots in the overlapping range 5cd is smaller than the number of halftone dots in the inner range 3cc and the inner range 3dd. Alternatively, the distribution of halftone dots (density per unit area) in the overlapping range 5cd gradually decreases as the distance from the inner range 3cc or the inner range 3dd increases.
Alternatively, the halftone dot size in the overlapping range 5cd is smaller than the halftone dot size in the inner range 3cc and the inner range 3dd. Alternatively, the size of the halftone dot in the overlapping range 5cd gradually decreases as the distance from the inner range 3cc or the inner range 3dd increases. In addition, it is the same as that of Embodiment 1 that the method of putting ink is not limited.

Further, as in the first embodiment, the ink is transferred to the small printing blankets... 40c, 40d, 40e. -Adhere the ink along (according to S5 shown in FIG. 1).
Next, the small printing blanket... 40c, 40d, 40e... Is pressed against the corresponding small printed surface... 1c, 1d, 1e. 2d, 2e... Are printed (according to S6 shown in FIG. 1).

Then, for example, the predetermined width of the boundary between the small picture 2c and the small picture 2d overlaps each other, the predetermined width of the boundary between the small picture 2d and the small picture 2e overlaps each other, and the amount of ink in the overlapping range is equal to the overlapping range. Since it is less than the amount of ink in the excluded inner range, the pattern in the overlapping range does not become dark (see FIG. 8).
At this time, for example, in the small printing original plate 30c, the amount of ink placed in a range equivalent to the overlapping range 5cd with the small developed image 3d is reduced to “α”%, while in the small printing original plate 30d, the small developed image 3c is reduced. If the amount of ink placed in the range equivalent to the overlap range 5cd is reduced to “100−α”%, the pattern in the overlap range 5cd will not be darkened or thinned, and the aesthetics will be impaired. There is nothing.

  According to the present invention, since it is possible to print on a printing medium having a complicated shape, for example, it can be widely used as a printing method on a printing medium having a recess.

DESCRIPTION OF SYMBOLS 1 Small to-be-printed surface 2 Small pattern 3 Small expansion pattern 3c Small expansion pattern 3d Small expansion pattern 3e Small expansion pattern 3cc Inner range 3cd Boundary range 3dc Boundary range 3dd Inner range 3de Boundary range 3ed Boundary range 3cde Expanded small expanded pattern 4 Small printing Blanket pattern for printing 5 Overlapping range 10 Surface to be printed 20 Pattern 30 Small printing original plate 40 Blanket for small printing 50 Arm 100 Printed material (before printing)
101 Concave part 200 Printed body (printed)

Claims (6)

The printing surface of the printing material is divided into a plurality of small printing surfaces so that the respective boundaries overlap each other with a predetermined width, and a pattern printed on the printing surface is printed on each of the small printing surfaces. Dividing into small patterns to be made,
Creating a small development pattern in which the small design is developed on a plane;
The amount of ink in a predetermined width of the boundary along the small developed pattern on the small printing surface corresponding to each of the small printing original plates corresponding to each of the plurality of small printing surfaces is determined by the predetermined amount of the boundary. A step of placing ink so as to be less than the amount of ink in a range excluding the width of
A step of transferring the ink to each small printing blanket by pressing a small printing blanket corresponding to each of the plurality of small printing surfaces against the corresponding small printing original plate;
Printing the pattern on the printing surface by pressing the plurality of small printing blankets against the corresponding small printing surface and printing the small pattern on the small printing surface;
A printing method characterized by comprising: The plurality of small printing blanket, respectively pressed against the normal line parallel to said small printing original plate of the corresponding small printing original plate, and, the average normal and parallel to the small of the small printing surface, each of which corresponds The printing method according to claim 1 , wherein the printing surface is pressed against a printing surface. The position of each of the plurality of small printing surfaces is stored, and the small printing blanket corresponding to each of the plurality of small printing surfaces is sequentially gripped, and the gripped small printing blanket is using a multi-axis robot for pressing the small target printing surface corresponding method of printing according to claim 1, wherein performing the step of printing the pattern. The small printing surface is a side surface or a bottom surface of a recess recessed into the printed material;
4. The printing method according to claim 3 , wherein the small printing blanket corresponding to the side surface or the bottom surface can freely enter the concave portion. The small printing surface is a side surface or a bottom surface of a recess recessed into the printed material;
The printing method according to claim 4 , wherein a gripping portion of the multi-axis robot that grips the small printing blanket corresponding to the side surface or the bottom surface can freely enter the concave portion. Printing substrate characterized by having a printing surface that is printed by the printing method according to any one of claims 1 to 5.

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