JP2011000736A - Printing method and material to be printed - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printing method performing a printing on a material to be printed, which has a complicated shape.SOLUTION: The printing method includes: a step of dividing a surface 10 to be printed of the material 100 to be printed into a plurality of small surfaces 1a, 1b, ... (hereinafter, "a, b, ..." is abbreviated) to be printed, and dividing a pattern 20 printed on the surface 10 into small patterns 2 printed on the small surfaces 1 to be printed; a step of forming a small spread pattern 3 formed by spreading the small pattern 2 on a plain surface; a step of placing ink on a small printing original plate 30 corresponding to each small surface 1 along the small spread pattern 3; a step of pressing a small printing blanket 40 corresponding to each small surface 1 on the small printing original plate 30 to transfer the ink; and a step of printing the pattern 20 on the surface 10 by pressing the small printing blanket 30 gripped by an elevating means moving up and down to the small surface 1 to print the small pattern 2.

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) In the printing method according to the present invention, a printing surface of a printing medium is divided into a plurality of small printing surfaces, and a pattern printed on the printing surface is printed on each of the printing surfaces. A process of dividing into small pictures,
Creating a small development pattern in which the small design is developed on a plane;
A step of placing ink along the small development 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;
A step of pressing a small printing blanket corresponding to each of the plurality of small printing surfaces against a corresponding small printing original plate to transfer the ink to each of the small printing blankets;
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) 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 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 pressing a small printing blanket corresponding to each of the plurality of small printing surfaces against a corresponding small printing original plate to transfer the ink to each of the small printing blankets;
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.

(3) In the above (1) or (2), the step of printing the pattern uses an elevating device that moves up and down with respect to the substrate on which the substrate to be printed is placed,
The lifting device grips the small printing blanket corresponding to the plurality of small printing surfaces, and presses the small printing blanket against the small printing surface corresponding thereto.

(4) In the above (1) or (2), the step of printing the pattern uses an elevating device that moves up and down with respect to the substrate on which the substrate to be printed is placed,
When printing a part of the pattern on a small printing surface located on a side surface of the printing medium, the lifting device grips the small printing blanket corresponding to the small printing surface, and The portion of the blanket to which the ink has not been transferred is pressed against the substrate, whereby the portion of the small printing blanket to which the ink has been transferred is pressed against the corresponding surface to be printed.

  (5) In the above (4), the range of the substrate to which the portion of the blanket for small printing to which the ink is not transferred is pressed is the range of the substrate on which the substrate to be printed is placed. It is characterized by being positioned on the descending side in the lifting direction of the lifting device.

  (6) A printing medium according to the present invention has a printing surface printed by the printing method according to any one of (1) to (5).

(I) Since the printing method according to the present invention prints a pattern on a printing surface using a blanket for small printing corresponding to a small pattern obtained by dividing the pattern, printing on a printed body having a complicated shape is possible. Become.
If the pressing directions of the plurality of small printing blankets are made parallel to each other, the pressing operation is simplified, and the apparatus used for the pressing can be simplified. At this time, a plurality of small printing blankets (individually different shapes) may be pressed separately one by one, or several of the plurality of small printing blankets (individually different shapes) may be simultaneously pressed. , It may be pressed to a plurality of locations.

(Ii) In addition, by using a small printing blanket corresponding to a small pattern divided so that each boundary overlaps with a predetermined width, the amount of ink with a predetermined overlapping width is reduced, and the pattern is printed on the printing surface. Since printing, it is possible to print on a substrate with a complicated shape, and the boundary between small patterns becomes dark, or there is a range where there is no pattern at the boundary (streaks where the background of the substrate is visible) There is nothing.
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.

(Iii) Since the process of printing a pattern uses a lifting device that moves up and down (moves up and down) with respect to the substrate on which the printing material is placed, the device for work is simplified. .
At this time, a plurality of small printing blankets (individually different shapes) may be individually attached to the lifting device one by one, or any number of the plurality of small printing blankets (individually different shapes). You may attach these to several places of a raising / lowering apparatus.
In order to align the printing medium and the lifting device (moving in the Z direction) in the horizontal direction, the substrate or the lifting device is provided with horizontal moving means (moving in the X and Y directions). . Accordingly, after the horizontal alignment between the printing medium and the lifting device is completed by the horizontal movement means, the lifting means is lowered. Further, the horizontal relative position between the substrate and the lifting device may be changed in synchronization with the lowering of the lifting means. At this time, the printing medium is moved in the horizontal direction (X direction and Y direction), the lifting device is moved in the horizontal direction (X direction and Y direction), or both are moved in the horizontal direction (X direction and Y direction). Direction).

(Iv) Further, when printing a part of the pattern on the small printing surface located on the side surface of the printing medium, the lifting device presses the portion of the small printing blanket where the ink is not transferred to the substrate, Because the portion of the small printing blanket to which the ink has been transferred is pressed against the corresponding small surface to be printed, for example, the side surface that is substantially perpendicular to the substrate, or the side surface that is located on the outside of the substrate as it moves away from the substrate (So-called overhang side surface) can be printed.
For horizontal alignment between the printing medium and the lifting device (moving in the Z direction), horizontal moving means (moving in the X direction and Y direction) installed on the substrate or the lifting device are used. When the lifting means is lowered to a predetermined vertical position (including when the small printing blanket is pressed against the substrate by a predetermined amount), the lifting device may be moved closer to the printing medium (by pressing). May be good). Further, in synchronization with the descending operation of the lifting / lowering means, the horizontal movement means may bring the lifting / lowering device closer to the printing medium in the horizontal direction (may be pressed).

  (V) Further, the range of the substrate to which the portion of the small printing blanket where the ink is not transferred is pressed is lowered by one step in the lifting direction of the lifting device relative to the range of the substrate on which the printing medium is placed. Therefore, when the small printing blanket is pressed to such a lowered range, the surface of the portion where the ink of the small printing blanket is transferred tends to deform (expand) in a direction parallel to the surface of the substrate. The printing accuracy on the small print surface (side surface) is improved.

  (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 shown in FIG. Sectional drawing shown for every printing process explaining the printing method shown in FIG. Sectional drawing shown for every printing process explaining the printing method shown in FIG. Sectional drawing shown for every printing process explaining the printing method shown in FIG. Sectional drawing explaining the variation of the printing method shown in FIG. Sectional drawing explaining the variation of the printing method shown in FIG. Sectional drawing explaining the variation of the printing method shown in FIG. Sectional drawing which shows typically the to-be-printed body which concerns on Embodiment 2. FIG. 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. The top view which expands and shows typically an example of arrangement | positioning of the halftone dot in the small expansion | deployment pattern in the printing method which concerns on Embodiment 3 of this invention. FIG. 9 is a plan view schematically showing an enlarged overlapping range of printing in a printing method according to Embodiment 3 of the present invention.

[Embodiment 1]
1 to 8 illustrate a printing method according to Embodiment 1 of the present invention. FIG. 1 is a flowchart, FIGS. 2 to 5 are cross-sectional views shown for each printing process, and FIGS. It is sectional drawing which shows the variation of the printing method. 2 to 8 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. 1, a printing method 1000 includes a step (S1) of dividing a printing surface 10 of a printing medium 100 into a plurality of small printing surfaces;
A step (S2) of dividing the pattern to be printed on the printing surface into small patterns to be printed on each of the small printing surfaces;
Creating a small unfolded pattern in which each small pattern is developed on a plane (S3);
A step (S4) of placing ink on a small printing original corresponding to each of the small printing surfaces along a small development pattern on the small printing surface corresponding to each small printing surface (S4);
A step (S5) of transferring the ink to each small printing blanket by pressing a small printing blanket corresponding to each of the small printing surfaces against the corresponding small printing original plate;
There is a step (S6) of pressing a small printing blanket against a small print surface corresponding to the small printing blanket using an elevating means and printing a small picture there.

Next, the printing method 1000 will be described by taking the printing body 100 schematically shown in cross section in FIGS. 2 to 5 as an example.
In FIG. 2, the printing surface 10 (position 11 to position 16) of the printing medium 100 is referred to as a plurality of small printing surfaces 1 a, 1 b 1, 1 b 2, 1 c, 1 d (hereinafter, each referred to as “small printing surface 1”). 1) (S1 shown in FIG. 1), and a small pattern 2a, 2b1, 2b2 printed on each of the small print surfaces 1 is printed with a pattern 20 (not shown) to be printed on the print surface 10. 2c and 2d (hereinafter each may be referred to as “small picture 2”) (S2 shown in FIG. 1). Then, small development patterns 3a, 3b1, 3b2, 3c, and 3d (hereinafter, may be referred to as “small development patterns 3”, respectively) developed in a plane on each of the small patterns 2 are created (S3 shown in FIG. 1). ).

Next, the small printing original surfaces 30a, 30b, 30c, and 30d (hereinafter sometimes referred to as “small printing original plate 30”) corresponding to the small printing surfaces 1 respectively. Ink 4 is placed along the small developed pattern 3 in S1 (S4 shown in FIG. 1). The method of placing the ink is not limited. The ink may be placed on the convex portion of the relief plate or the concave portion of the intaglio plate on which the small development pattern 3 is formed, or printed on a flat plate (inkjet printer, screen printing, gravure). Ink may be placed by printing, offset printing, or the like.
Then, small printing blankets 40a, 40b, 40c, and 40d (hereinafter sometimes referred to as “small printing blanket 40”) corresponding to each of the small printing surfaces 1 correspond to the small printing. The ink 4 is pressed onto the original plate 30 to transfer the ink 4 to each small printing blanket 40 (S5 shown in FIG. 1).
Further, the small printing blanket 40 is pressed against the small printing surface 1 corresponding to the small printing blanket 40, and the small pattern 2 is printed thereon (S6 shown in FIG. 1). Hereinafter, each of the small printing surfaces 1 will be described in detail.

In FIG. 3A, ink 4c is placed along a small developed pattern 3c on a small printing original plate 30c corresponding to the small print surface 1c (S4 shown in FIG. 1), and a small printing blanket 40c is placed on the small printing original plate. 30c (S5 shown in FIG. 1). That is, the small printing blanket 40c is deformed into a flat shape, and the ink 4c is transferred to the surface thereof. At this time, the blanket 40c for small printing has a substantially spindle shape (substantially arcuate or substantially parabolic shape) corresponding to the shape of the small print surface 1c that is a recess when the blanket 40c is not pressed. Corresponds to the approximate center of the small development pattern 3c.
In FIG. 3B, the printing medium 100 is placed on the placement surface 91 of the substrate 90. Then, the small printing blanket 40c is disposed immediately above the corresponding small printing surface 1c and is pushed down along the normal direction (vertical direction in FIG. 3) of the mounting surface 91.

In FIG. 3C, the small printing blanket 40c is pressed downward. For this reason, since the small printing blanket 40c is deformed so as to expand toward the surface of the small print surface 1c, the ink 4c is transferred to the surface and the small pattern 2c is printed (S6 shown in FIG. 1). ).
The present invention is not limited to the device for pressing down (pressing), and can be aligned with the small printing surface 1c in the horizontal direction, and can be moved up and down by holding the small printing blanket 40c. Anything is acceptable.

  In FIG. 4A, ink 4b1 and ink 4b2 are placed along the small developed pattern 3b1 and the small developed pattern 3b2 on the small printing original plate 30b corresponding to the small printed surface 1b1 and the small printed surface 1b2 (FIG. 1). S4), and the small printing blanket 40b is pressed against the small printing original plate 30b (S5 shown in FIG. 1). That is, the small printing blanket 40b is deformed into a flat shape, and the inks 4b1 and 4b2 are transferred to the surface thereof. At this time, in the state where the pressing is not performed, the small printing blanket 40b has a substantially arc-shaped cross section (in a form in which the cylinder is halved), and the lowest point is an intermediate point between the small developed pattern 3b1 and the small developed pattern 3b2. Is almost the same.

In FIG. 4B, the printing medium 100 is placed on the placement surface 91 of the substrate 90. Then, the small printing blanket 40b is arranged immediately above the small printing surface 1b1 and the small printing surface 1b2 to which the small printing blanket 40b corresponds, and is pushed down along the normal direction (vertical direction in FIG. 4) of the mounting surface 91. ing.
In FIG. 4C, the small printing blanket 40b is pressed downward. For this reason, the small printing blanket 40b is deformed so as to be adapted to the small printing surface 1b1 and the small printing surface 1b2, and the ink 4b1 and the ink 4b2 are transferred to the surface, and the small pattern 2b1 and the small pattern 2b2 are printed. (S6 shown in FIG. 1).
Note that, as in FIG. 3, the device for pressing down (pressing) is not limited.

In FIG. 5A, an ink 4a is placed along a small developed pattern 3a on a small printing original plate 30a corresponding to the small printing surface 1a (S4 shown in FIG. 1), and a small printing blanket 40a is placed on the small printing original plate. 30a (S5 shown in FIG. 1). That is, the small printing blanket 40c is deformed into a flat shape, and the ink 4c is transferred to the surface thereof. At this time, in the state where the pressing is not performed, the small printing blanket 40a has a substantially parabolic cross section, and its apex (lowermost point) 41a is located at a position away from the small developed pattern 3a (deviation).
In FIG. 5B, the printing medium 100 is placed on the placement surface 91 of the substrate 90. The placement surface 91 is one step higher than the surrounding contact surface 92. And the vertex 41a of the blanket 40a for small printing is arrange | positioned in the position which left | separated horizontally from the small to-be-printed surface 1a to which this corresponds, and along the normal line direction (up-down direction in FIG. 5) of the mounting surface 91 , Pushing down.

In FIG. 5C, the small printing blanket 40 a is pressed against the contact surface 92. For this reason, the small printing blanket 40c is deformed so that the surface away from the vertex 41a expands in the substantially horizontal direction, and therefore the small printing blanket 40c is pressed against the small print surface 1a. That is, the ink 4a transferred to the small printing blanket 40c is transferred to the small printing surface 1a, and the small pattern 2a is printed (S6 shown in FIG. 1).
At this time, since the contact surface 92 is one step lower than the placement surface 91, the surface to which the ink 4a of the small printing blanket 40c is transferred expands in parallel with the normal direction of the small printing surface 1a. Then, it is pressed against the small print surface 1a. Therefore, the printing accuracy of the small picture 2a is improved. In the above, the contact surface 92 and the mounting surface 91 are parallel and have a step, but the contact surface 92 is inclined so as to become lower as it approaches the mounting surface 91 (stepped portion). Also good.

  Note that the small printed surface 1d is in an “overhang” state in which the upper side protrudes, but a small pattern 2d is printed in the same manner as the small printed surface 1a (the above-mentioned “a” added to the reference numeral). Is replaced with "d"). At this time, the surface of the contact surface 92 on which the small printing blanket 40d abuts is inclined so as to be closer to the placement surface 91 (stepped portion), and the surface onto which the ink 4d of the small printing blanket 40d has been transferred. However, you may make it expand | swell in parallel with the normal line direction of the small to-be-printed surface 1d.

(Variation 1)
FIG. 6 shows a variation of the printing method of the small picture 2b1 and the small picture 2b2 shown in FIG.
In FIG. 6A, the ink 4b1 and the ink 4b2 are placed along the small developed pattern 3b1 and the small developed pattern 3b2 on the small printing original plate 30b corresponding to the small printed surface 1b1 and the small printed surface 1b2 (FIG. 1). S4), and the small printing blanket 41b is pressed against the small development pattern 3b1 and the small printing blanket 42b is pressed against the small development pattern 3b2 (S5 shown in FIG. 1).
That is, the small printing blankets 41b and 42b are deformed into a flat shape, and the inks 4b1 and 4b2 are respectively transferred to the surfaces thereof. At this time, in the state where the pressing is not performed, the small printing blanket 41b has a substantially arc-shaped cross section (form in which the cylinder is halved), and its lowest point coincides with the center of the small developed pattern 3b1, The blanket 42b is substantially arc-shaped in cross section (in a form in which the cylinder is halved), and its lowest point coincides with the center of the small developed pattern 3b2.

In FIG. 6B, the printing medium 100 is placed on the placement surface 91 of the substrate 90. The small printing blanket 41b and the small printing blanket 42b are attached to a common lifting device (not shown) so that they are directly above the corresponding small printing surface 1b1 and small printing surface 1b2, respectively. It is pushed down along the normal direction of the mounting surface 91 (vertical direction in FIG. 6).
In FIG. 6C, the small printing blankets 41b and 42b are pressed downward. For this reason, the small printing blanket 41b and the small printing blanket 42b are deformed so as to be adapted to the small printing surface 1b1 and the small printing surface 1b2, respectively, and the ink 4b1 and the ink 4b2 are transferred to the surface, and the small pattern 2b1 and A small pattern 2b2 is printed (S6 shown in FIG. 1).

  Note that, as in FIG. 3, the device for pressing down (pressing) is not limited. In the above, the ink 4b1 and the ink 4b2 are placed on the small printing original plate 30b. However, the present invention is not limited to this, and the ink 4b1 and the ink 4b2 may be placed on separate small printing original plates 30b. . Further, the small printing blanket 41b and the small printing blanket 42b are attached to a common lifting device and are simultaneously pressed against the substrate 100. However, the present invention is not limited to this, and the small printing blanket 41b is used. Alternatively, the small printing blanket 42b may be separately attached and one of them may be pressed first.

(Variation 2)
FIG. 7 shows a variation in which the small pattern 2d is printed on the small print surface 1d.
In FIG. 7A, the small printing original plate 30ad corresponding to the small print surface 1d, the ink 4d is placed along the small unfolded pattern 3d (S4 shown in FIG. 1), and the small printing blanket 40d is placed on the small printing original plate 30d. (S5 shown in FIG. 1). That is, the small printing blanket 40c is deformed into a flat shape, and the ink 4c is transferred to the surface thereof.
In FIG. 7B, the printing medium 100 is placed on the placement surface 91 of the substrate 90. The placement surface 91 is one step higher than the surrounding contact surface 92. Then, the apex 41d of the small printing blanket 40d is disposed at a position away from the corresponding small print surface 1d in the horizontal direction, and is pushed down along the normal direction (vertical direction) of the mounting surface 91. Yes.

In FIG. 7C, the small printing blanket 40d is pressed against the contact surface 92 in the vertical direction and is moved in the horizontal direction toward the small print surface 1d. For this reason, the small printing blanket 40d is pressed in the horizontal direction toward the small printing surface 1d in a state where the surface away from the vertex 41d is expanded in the substantially horizontal direction. Therefore, the surface to which the ink 4d of the small printing blanket 40d has been transferred is pressed against the small printing surface 1a from a direction closer to the normal direction of the small printing surface 1d, so that the printing accuracy of the small pattern 2d is improved. Yes.
The means for moving in the horizontal direction is not limited. Even if the printing medium 100 is moved in the horizontal direction (X direction and Y direction), the small printing blanket 40d (same as the lifting device) is moved in the horizontal direction. It may be moved in the (X direction and Y direction) or both may be moved in the horizontal direction (X direction and Y direction).

(Variation 3)
FIG. 8 shows a variation in which the small picture 2d is printed on the small print surface 1d.
(A) of FIG. 8 is the same as (a) of FIG.
In FIG. 8B, the printing medium 100 is placed on the placement surface 91 of the substrate 90. At this time, an abutting surface 92 that is lowered by one step around the mounting surface 91 and an inclined wall 93 that faces the small printing surface 1 d of the printing medium 100 are provided. Since the inclined wall 93 is separated from the small printing surface 1d by a predetermined distance, the small printing blanket 40d descends without touching the inclined wall 93 and the small printing surface 1d, and eventually the apex of the small printing blanket 40d. 41d abuts against the abutment surface 92 at a position away from the corresponding small printing surface 1d in the horizontal direction.

In FIG. 8C, when the small printing blanket 40d is pressed vertically against the contact surface 92, the small printing blanket 40d expands. At this time, since one surface of the small printing blanket 40d abuts against the inclined surface 93 and deformation is restrained, the other surface (the surface on the small printing surface 1d side) is the normal line of the small printing surface 1d. It is pressed from the direction closer to the direction. Therefore, printing is facilitated, and the printing accuracy of the small picture 2d is improved on the surface of the small printing blanket 40d on which the ink 4d is transferred.
Note that the shape of the inclined wall 93 is not limited, and in addition to raising and lowering, the printing medium 100 and the small printing blanket 40d (same as the raising and lowering device) are relatively horizontal (X direction and Y direction). ) May be moved.
Moreover, you may use the inclined wall according to such an inclined wall 93 at the time of printing of the small pattern 2a to the small to-be-printed surface 1a (up-and-down of the blanket 40a for small printing).

[Embodiment 2]
FIG. 9 is a cross-sectional view schematically showing a printing medium 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. That is, as described in the first embodiment, the printed material 200 is printed at low cost by a simple apparatus because the pattern 20 is printed by the lifting means that moves up and down in the vertical direction.

[Embodiment 3]
10 to 12 illustrate a printing method according to the third embodiment of the present invention. FIG. 10 is a plan view schematically showing a procedure for dividing a picture, and FIG. 10 is a halftone dot in a small development picture. FIG. 12 is a plan view schematically showing an enlarged print overlapping range. FIG. 11 to 12 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.

10 to 12, the printing surface 10 of the printing material 100 is divided into a plurality of small printing surfaces... 1f, 1g, 1h... So that each boundary overlaps with a predetermined width. (Similar to S1 shown in FIG. 1), a small pattern 20 (not shown) to be printed on the printing surface 10 is printed on each of the small printing surfaces 1... 2f, 2g, 2h. (According to S2 shown in FIG. 1).
Then, small unfolded patterns... 3f, 3g, 3h... Are developed by developing the small patterns... 2f, 2g, 2h... On a plane (according to S3 shown in FIG. 1).
Further, small print original plates corresponding to each of the small printed surfaces... 1f, 1g, 1h... 30f, 30g, 30h. Ink is applied along 3 g, 3 h... (According to S4 shown in FIG. 1).

At this time, for example, in the small printing original plate 30f, an enlarged small developed pattern 3efg obtained by adding a boundary range 3gf equivalent to a predetermined width in contact with the small developed pattern 3f of the small developed design 3g to a range equivalent to the small developed design 3f. Ink is put along.
A boundary range 3fg equivalent to a predetermined width in contact with the small development pattern 3g of the small development design 3f and a boundary range 3gf equivalent to a predetermined width in contact with the small development design 3f of the small development design 3g are placed in an overlapping range 5fg. The amount of ink is smaller than the amount of ink placed in the inner range 3ff excluding the overlapping range 5fg from the range equivalent to the enlarged and small developed pattern 3efg (see FIG. 10A).

Similarly, for example, in the small printing original plate 30g, a boundary range 3fg equivalent to a predetermined width in contact with the small development pattern 3g of the small development pattern 3f and a small development of the small development pattern 3h are equivalent to the range of the small development pattern 3g. Ink is placed along a range equivalent to the enlarged small developed pattern 3fgh to which the boundary range 3hg equivalent to the predetermined width in contact with the pattern 3g is added.
Then, the amount of ink placed in the overlapping range 5fg, the boundary range 3gh equivalent to the predetermined width in contact with the small development pattern 3h of the small development picture 3g, and the predetermined width in contact with the small development picture 3g of the small development picture 3h are equivalent. The amount of ink placed in the overlapping range 5gh combined with the boundary range 3hg is less than the amount of ink placed in the inner range 3gg excluding the overlapping range 5fg and the overlapping range 5gh from the range equivalent to the enlarged small development pattern 3fgh. ing.

That is, for example, the number of halftone dots in the overlapping range 5fg is smaller than the number of halftone dots in the inner range 3ff and the inner range 3gg. Alternatively, the distribution of halftone dots (density per unit area) in the overlapping range 5fg gradually decreases as the distance from the inner range 3ff and the inner range 3gg increases.
Alternatively, the halftone dot size in the overlapping range 5fg is smaller than the halftone dot size in the inner range 3ff and the inner range 3gg. Alternatively, the size of the halftone dot in the overlapping range 5fg is gradually reduced as it is away from the inner range 3ff and the inner range 3gg. 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 a small printing blanket... 40f, 40g, 40h..., 4f, 4g, 4h. -Adhere the ink along (according to S5 shown in FIG. 1).
Next, the small printing blanket 40f, 40g, 40h,... Is pressed against the corresponding small print surface 1f, 1g, 1h,. 2g, 2h... Are printed (according to S6 shown in FIG. 1).

Then, for example, the predetermined width at the boundary between the small picture 2f and the small picture 2g overlaps each other, the predetermined width at the boundary between the small picture 2g and the small picture 2h 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. 10).
At this time, for example, in the small printing original plate 30f, the amount of ink placed in the range equivalent to the overlapping range 5fg with the small developed image 3g is reduced to “α”%, while in the small printing original plate 30g, the small developed image 3f If the amount of ink placed in the range equivalent to the overlapping range 5fg is reduced to "100-α"%, the pattern in the overlapping range 5fg will not be darkened or thinned, and the aesthetics will be impaired. There is nothing.

  According to the present invention, it is possible to print on a printing body having a complicated shape by using an elevating device. Therefore, for example, it can be widely used as a printing method on a printing body having a complicated curved surface. .

DESCRIPTION OF SYMBOLS 1 Small to-be-printed surface 2 Small picture 3 Small development picture 4 Ink 10 To-be-printed surface 20 Picture 30 Small printing original plate 40 Small printing blanket 90 Substrate 91 Mounting surface 92 Contact surface 93 Inclined surface 100 To-be-printed body 200 To-be-printed body 1000 Printing method

Claims (6)

Dividing the printing surface of the printing medium into a plurality of small printing surfaces, and dividing the pattern printed on the printing surface into small patterns printed on each of the small printing surfaces;
Creating a small development pattern in which the small design is developed on a plane;
A step of placing ink along the small development 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;
A step of pressing a small printing blanket corresponding to each of the plurality of small printing surfaces against a corresponding small printing original plate to transfer the ink to each of the small printing blankets;
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 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 pressing a small printing blanket corresponding to each of the plurality of small printing surfaces against a corresponding small printing original plate to transfer the ink to each of the small printing blankets;
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 step of printing the pattern uses a lifting device that moves up and down with respect to the substrate on which the substrate is placed,
The lifting device grips the small printing blanket corresponding to the plurality of small printing surfaces, and presses the small printing blanket against the small printing surface corresponding thereto. 3. The printing method according to 2. The step of printing the pattern uses a lifting device that moves up and down with respect to the substrate on which the substrate is placed,
When printing a part of the pattern on a small printing surface located on a side surface of the printing medium, the lifting device grips the small printing blanket corresponding to the small printing surface, and The portion of the blanket for which the ink has been transferred is pressed against the surface to be printed corresponding to the portion of the blanket for which the ink has been transferred by pressing the portion of the blanket to which the ink has not been transferred. The printing method according to 1 or 2.   The range of the substrate on which the portion of the small printing blanket to which the ink is not transferred is pressed is lower than the range of the substrate on which the printing body is placed in the lifting direction of the lifting device. The printing method according to claim 4, wherein the printing method is located.   A printed material having a printed surface printed by the printing method according to claim 1.

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