JP2008183833A - Tampo printing method and tampo transfer object for tampo printing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable excellent printing free of printing displacement even to a concave curved printing face with a large curved range and large depth of the object to be printed by vertically pushing the convex curved transferring face of a tampo transferring body to the concave curved face of the object to be printed. <P>SOLUTION: The convex curved transferring face 3 onto which ink is transferred of the tampo transferring body 1 is penetrated into the object 7 and positioned inside to be printed whose inner face is the concave curved printing face 8, then the convex curved transferring face 3 is expanded and displaced substantially vertically and pressed to the concave curved printing face 8, thereby pushing the convex curved face 3 to the concave curved printing face 8 by generating no displacement z. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a tampo printing (agreement with pad printing) method capable of printing on a cubic curved surface using an excellent copying property of an elastic body to an object surface, and a tampo used in this tampo printing method. The present invention relates to a tampo transfer body for printing.

In the tampo printing, as shown in FIG. 4, a tampo transfer body 10 is formed by fixing an elastic transfer portion 11 formed of a flexible elastic material such as silicone rubber to a support portion 13. The ink drawn in a desired pattern is transferred from the original plate (not shown) to the convex curve transfer surface 12 which is the surface of the portion 11, and the transferred curved ink is transferred onto the convex curve transfer surface 12 on the printed material 14. Printing is achieved by pressing and transferring to the surface 15.
Japanese Patent Laid-Open No. 10-092259

  In this tampo printing technique, when the concave curved printing surface 15 of the substrate 14 is a cubic curved surface, the elastic transfer portion 11 of the tampo transfer body 10 has a tip-shaped (convex) convex portion that forms the convex curved transfer surface 12. The convex curved transfer surface 12 similar to the concave curved printing surface 15 of the substrate 14 can be formed by adopting a shape such as a spherical arc surface) or an umbilical shape (cylindrical arc surface shape).

  Thus, by making the convex curve transfer surface 12 a curved curved surface similar to the concave curved print surface 15, the elasticity of the convex curved transfer surface 12 when the convex curved transfer surface 12 is pressed against the concave curved print surface 15. The scanning displacement operation is suppressed as much as possible, thereby obtaining high-quality printing.

  However, in the above-described prior art, as shown in FIGS. 4A and 4B, printing is achieved by using the elasticity of the elastic transfer portion 11 in the direction of the arrow. Although printing of the front end portion of 12 is normally achieved, there is a problem that printing of a portion away from the front end portion of the convex curved transfer surface 12 becomes defective due to printing misalignment.

  That is, as shown in FIG. 4, when the central angle indicating the curved range of the concave curved printing surface 15 of the substrate 14 increases, the portion away from the tip portion of the convex curved transfer surface 12 becomes the concave curved printing surface 15. After being pressed, the displacement indicated by the horizontal arrow in FIG. 4C is received to generate a displacement displacement z, which causes a printing displacement.

  As described above, since printing misalignment occurs in a portion other than the tip portion of the convex curve transfer surface 12, the concave curved print surface 15 of the printing material 14 that can be tampon printed is limited to the extreme opposite to the tip portion of the convex curve transfer surface 12. However, there is a problem that the size and shape of the concave curved printing surface 15 that can be printed is limited to only a shallow portion.・

  Therefore, the present invention was devised to solve the above-described problems in the prior art, and the convex curved transfer surface of the elastic transfer portion of the tampo transfer member is pushed perpendicularly to the concave curved printed surface of the substrate. Therefore, it is an object of the present invention to make it possible to perform good printing without printing deviation even on a concave curved printing surface having a large curved range and a large depth.

  In the tampo printing method of the present invention, the ink to be printed is transferred onto the convex curved transfer surface, which is the surface of the elastic transfer portion of the tampo transfer body, and the elastic transfer portion obtained by transferring this ink to the convex curved transfer surface is transferred to the inner surface. By intruding into the printed material having the concave curved printing surface, and then inflating the elastic transfer portion, the convex curved transfer surface of the elastic transfer portion is pressed substantially perpendicularly to the concave curved printing surface of the printed material. Is.

  Since the elastic transfer portion of the tampo transfer body swells and deforms in the printed material, the convex curved transfer surface in contact with the concave curved printing surface of the printed material is along a bulging direction that is substantially perpendicular to the concave curved printing surface. Pressed.

  In this way, the convex curve transfer surface of the elastic transfer portion is pressed substantially perpendicularly to the concave curved print surface of the substrate, so that the convex curved transfer surface is not displaced with respect to the concave curved print surface.

  Therefore, since the pressing of the convex curved transfer surface against the concave curved printing surface is achieved by the bulging deformation of the elastic transfer portion, the printable area of the convex curved transfer surface is not limited to the tip portion, and the curved range is The entire concave curved printing surface having a large depth can be used as a printable region.

  In addition, since the convex curved transfer surface for transferring the ink is swelled and deformed, that is, stretched and deformed, printing is performed. This makes it possible to reduce the thickness, thereby making it easy to perform gradation printing or blur printing.

  The tampo transfer body for tampo printing according to the present invention includes an elastic transfer portion, a support portion that supports the elastic transfer portion, and an expansion portion provided in the elastic transfer portion.

  The elastic transfer part is molded with a flexible elastic material such as silicone rubber, and the curvature of the convex curved transfer surface, which is the surface, is set smaller than the curvature of the concave curved printing surface of the substrate, and its overall shape is concave curved Similar to the printed surface.

  The expansion portion is disposed in a portion of the elastic transfer portion including the center of curvature of the convex curved transfer surface, and is connected to a pressure fluid source that supplies a pressure fluid such as compressed air via a passage. Is swelled in the elastic transfer portion, thereby pressing the convex curved transfer surface in a substantially radial direction.

  Therefore, when the elastic transfer portion swells due to the expansion deformation of the expansion portion, the convex curved transfer surface comes into contact with the concave curved printing surface when the curvature becomes large and equal to the curvature of the concave curved printing surface, It can be pressed without displacement.

  The elastic transfer portion that bulges and deforms due to the expansion deformation of the expansion portion is not limited to the tip portion, but is a portion other than the portion supported by the support portion, and is therefore formed corresponding to a large central angle range. Printing can also be performed on the concave curved printing surface.

  In this way, the bulge deformation of the elastic transfer portion is obtained by the expansion deformation of the dedicated expansion portion, so that it is stably and reliably constant.

  Another means of the tampo transfer body of the present invention is that the convex curved transfer surface of the elastic transfer portion is in a range of about 180 ° central angle with the center of curvature as the center.

  When the convex curved transfer surface has a central angle range of approximately 180 °, printing on a concave curved printing surface having a substantially concave hemispherical arc surface shape or a substantially concave semicylindrical arc surface shape is possible.

  Further, another means of the tampo transfer body of the present invention is that the convex curved transfer surface of the elastic transfer portion has a substantially convex spherical arc surface shape.

  If the convex curve transfer surface of the elastic transfer portion has a substantially convex spherical arc surface shape, it is possible to perform printing extremely well on the concave curved print surface of the concave spherical arc surface shape.

  Further, another means of the tampo transfer body of the present invention is that the convex curve transfer surface of the elastic transfer portion has a substantially cylindrical arc surface shape.

  When the convex curved transfer surface of the elastic transfer portion has a substantially cylindrical arc surface shape, it is possible to perform printing extremely well on the concave curved print surface of the concave cylindrical arc surface shape.

  Another means of the tampo transfer member of the present invention is that the expansion portion is positioned vertically in the elastic transfer portion along the direction of entering and exiting the substrate.

  In the case where the expansion portion is positioned vertically in the elastic transfer portion, a large amount of expansion deformation in the lateral direction of the expansion portion can be easily obtained, so the tip portion of the convex curved transfer surface of the elastic transfer portion It is possible to reliably press the other portions to the concave curved printing surface without difficulty.

Since the present invention has the above-described configuration, the following effects can be obtained.
In the tampo printing method of the present invention, the convex curve transfer surface of the elastic transfer portion is pressed substantially perpendicularly to the concave curved print surface of the substrate, so that the convex curved transfer surface is displaced with respect to the concave curved print surface. Therefore, the print obtained by this is good without any printing misalignment.

  In addition, since the entire area of the convex curved transfer surface can be set as a printable area, printing on a concave curved printing surface having a large central angle range is possible, and the printing application range for the cubic curved surface is greatly expanded. Can do.

  Furthermore, since gradation printing or blur printing can be easily performed on the concave curved printing surface, the area of decoration on the concave curved printing surface can be widened.

  In the tampo transfer body for tampo printing according to the present invention, the elastic transfer portion that swells and deforms due to the expansion and deformation of the expansion portion is all portions other than the portion supported by the support portion. It is also possible to perform printing on the concave curved printing surface formed corresponding to the above, and thereby the range of the concave curved printing surface that can be printed can be expanded.

  Further, since the bulging deformation of the elastic transfer portion is stable and surely constant, it is possible to obtain good printing on the concave curved printing surface.

  When the convex curved transfer surface has a central angle range of approximately 180 °, printing on a concave curved printing surface having a substantially concave hemispherical arc surface or a substantially concave semi-cylindrical arc surface is possible. Printing on a concave curved printing surface having a depth becomes possible.

  If the convex curved transfer surface of the elastic transfer portion has a substantially convex spherical arc surface, printing on the concave curved printing surface of the concave spherical arc surface can be made extremely excellent without difficulty.

  When the convex curved transfer surface of the elastic transfer portion has a substantially cylindrical arc surface shape, the printing on the concave curved print surface of the concave cylindrical arc surface shape can be made extremely excellent without difficulty.

  In the case where the expansion portion is positioned vertically in the elastic transfer portion, the pressing of the portion other than the tip portion of the convex curve transfer surface of the elastic transfer portion to the concave curved print surface should be achieved without difficulty. Therefore, printing on the entire concave curved printing surface can be achieved satisfactorily without difficulty.

  Embodiments of the present invention will be described below with reference to FIGS.

  FIG. 1 shows the basic configuration and operation procedure of the present invention. A tampo transfer body 1 supports an elastic transfer portion 2 made of a flexible elastic material such as silicone rubber, and the elastic transfer portion 2. Therefore, it is comprised from the support part 5 fixed on the elastic transfer part 2, and the expansion | swelling part 4 embed | buried and assembled in the elastic transfer part 2. FIG.

  The elastic transfer portion 2 has a tip end portion (the lower end portion in FIG. 1) as a convex curved surface having a curvature smaller than the curvature of the concave curved print surface 8 that is the inner surface of the substrate 7, and the remaining portion following the tip portion. A convex curved transfer surface 3 having a smooth curved surface is provided, and ink drawn in a desired pattern is transferred from the original (not shown) onto the surface of the convex curved transfer surface 3.

  The expansion section 4 provided in the elastic transfer section 2 is connected to a pressure fluid source (not shown) such as compressed air via a passage 6 formed through the support section 5, so that the tampo transfer is performed. The body 1 is located vertically along the direction of entering and exiting the substrate 7.

  As shown in FIG. 1A, the tampo transfer body 1 having the ink transferred to the convex curve transfer surface 3 is caused to enter the printed material 7, and the tip portion of the convex curve transfer surface 3 is concavely curved printed on the printed material 7. When the surface 8 is brought into contact with or slightly pressed, the expansion portion 4 is expanded by the supply of pressure fluid, thereby expanding the elastic transfer portion 2 (see FIG. 1B).

  Due to the bulging deformation of the elastic transfer portion 2, the convex curved transfer surface 3 to which the ink has been transferred is pressed vertically against the concave curved printing surface 8 in order from the portion close to the tip portion already pressed (see FIG. 1 (c)), and thus, good printing with no printing deviation is performed on the entire concave curved printing surface 8 having a wide curved range.

  FIG. 2 shows an example of the configuration of a tampo transfer body 1 suitable for tampo printing on a printing material 7 having a semi-concave spherical arc-shaped concave curved printing surface 8, and the entire elastic transfer portion 2 including the expansion portion 4. Has a substantially bullet shape with a spherical arc tip.

  On the other hand, FIG. 3 shows a configuration example of the tampo transfer body 1 suitable for tampo printing on the printing material 7 having the semicircular groove-like concave curved printing surface 8 which is a semi-concave cylindrical shape. The entire elastic transfer part 2 having a built-in 4 has a semi-cylindrical shape.

  In the case of the configuration example of the tampo transfer body 1 shown in FIG. 3, the expansion portion 4 built in the elastic transfer portion 2 is preferably configured to be wide along the length direction of the elastic transfer portion 2.

  In the embodiment shown in FIG. 1, the upper portion of the concave curved printing surface 8 is greatly separated from the convex curved transfer surface 3 at the start of printing. The convex curved transfer surface 3 portion for printing is greatly stretched and deformed, so that gradation printing and blur printing can be easily performed.

FIG. 2 is an explanatory diagram showing a basic configuration of a tampo transfer member and a printing procedure. FIG. 3 is a perspective view showing a first example of a combination of a tampo transfer member and a printing material. FIG. 7 is a perspective view showing a second example of a combination of a tampo transfer member and a printing material. These are the basic composition of the conventional tampo transfer body, and explanatory drawing which shows the printing procedure.

Explanation of symbols

1, 10; tampo printing body 2, 11; elastic transfer body 3, 12; convex curve transfer surface 4; expansion portion 5, 13; support portion 6; passage 7, 14; substrate 8, 15; ; Displacement displacement

Claims (6)

  Printed material in which the ink to be printed is transferred to the convex curved transfer surface, which is the surface of the elastic transfer portion of the tampo transfer body, and the elastic transfer portion obtained by transferring the ink to the convex curved transfer surface has the inner surface as the concave curved printing surface A tampo printing method in which the elastic transfer portion is expanded, and the convex curved transfer surface is pressed substantially perpendicularly to the concave curved printing surface.   An elastic transfer portion which is formed of a flexible elastic material and has a curvature of a convex curve transfer surface which is a surface set to be smaller than a curvature of a concave curve print surface of a substrate, and the convex curve transfer surface in the elastic transfer portion A tampo transfer body for tampo printing, comprising an expansion portion that is disposed in a portion including the center of curvature and connected to a pressure fluid source via a passage, and a support portion that supports the elastic transfer portion.   3. The tampo transfer body for tampo printing according to claim 2, wherein the convex curved transfer surface of the elastic transfer portion is in the range of about 180 ° central angle with the center of curvature as the center.   4. The tampo transfer body for tampo printing according to claim 2 or 3, wherein the convex curve transfer surface of the elastic transfer portion has a substantially convex spherical arc surface shape.   The tampo transfer body for tampo printing according to claim 2 or 3, wherein the convex curve transfer surface of the elastic transfer portion is formed in a substantially cylindrical arc surface shape.   The tampo transfer body for tampo printing according to any one of claims 2 to 5, wherein the expansion portion is positioned vertically in the elastic transfer portion along a direction of entering and exiting the substrate.

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