JP2016007766A - Method for manufacturing printed matter, and printing plate - Google Patents

Abstract

An object of the present invention is to provide a method for producing a printed material, in which ink remaining in a groove of a printing plate can be easily washed, and a high-quality printed material can be easily obtained.
A method of manufacturing a printed material includes: preparing a first base material having a flat first surface; and a second base material having a through hole having one end and another end; A step of placing the second base material on the first surface of the first base material so that one end is in contact with the first surface of the first base material, and filling the space in the through hole from the other end side with ink. Washing the ink adhering to the first surface of the first base material and the wall surface of the through hole of the second base material, the step of transferring the ink filled in the space in the through hole to the transfer object, and the step; And a cleaning process. The cleaning step is performed in a state where the second substrate is at least partially removed from the first surface of the first substrate.
[Selection] Figure 3

Description

  The present invention relates to a method for producing a printed material including a pattern formed by ink. Moreover, this invention relates to the printing plate used in the manufacturing method of printed matter.

  As one of the printing technologies, a method is known in which ink is filled into a groove of a printing plate, and the ink is transferred to an object to be transferred such as paper or a substrate, thereby producing a printed material including a pattern formed by the ink. ing. As a method of transferring the ink filled in the groove of the printing plate to the transfer object, the transfer object is brought into contact with the printing plate, whereby the ink is transferred from the printing plate to the transfer object, or the blanket is transferred to the printing plate. There is a method in which the ink is transferred to the blanket, and then the ink on the blanket is transferred to the transfer medium.

  In recent years, attempts have been made to form conductive wiring using printing technology. That is, the printed pattern may be formed as a conductive wiring. For example, in Patent Document 1, a conductive paste containing a conductive material is used as ink, and the conductive paste is transferred onto an object to be transferred, whereby an electronic device such as a circuit board, electronic component, electromagnetic wave shield, or the like. In addition, there is disclosed a point of manufacturing a conductive wiring in an electronic component.

International Publication No. 2008/001600 Pamphlet

  In general, the ink filled in the grooves of the printing plate is not entirely transferred to the transfer object or the blanket, but a part of the ink remains in the grooves of the printing plate. If the printing plate in which the ink remains in the groove is continuously used, solidified ink fragments may be mixed with the ink transferred to the transfer object, or the groove of the printing plate may be clogged. Therefore, in order to continuously perform the printing with high quality, the cleaning process for cleaning the ink remaining in the groove is performed every time the transfer process is performed or once for a plurality of transfer processes. It is preferable.

  By the way, in the field of electronic equipment and electronic components, it is required to reduce the width of the wiring for miniaturization and the like. Therefore, when printing technology is used in the field of electronic equipment and electronic components, the width of the groove of the printing plate may be set to about several tens of μm. However, when the groove of the printing plate is reduced, the opening area of the groove for introducing a cleaning solution or the like is reduced during the cleaning process, and as a result, the ink in the groove is not easily removed during the cleaning process. Means.

  As a method of cleaning the ink remaining in the groove, not only a method of spraying a cleaning liquid toward the ink but also a method of spraying superheated steam toward the ink as described in Patent Document 1 is considered. It is done. However, when superheated steam is used, it is necessary to newly introduce equipment for generating and injecting superheated steam, and to newly secure a work place for injecting superheated steam.

  The present invention has been made in consideration of such points, and can easily wash the ink remaining in the grooves of the printing plate, and thus can easily obtain a high-quality printed matter. It aims at providing the manufacturing method of printed matter.

  The present invention is a method for producing a printed material including a pattern formed of ink, a first substrate having a flat first surface, and a second substrate having a through hole having one end and the other end. And placing the second base material on the first surface of the first base material so that the one end of the through hole is in contact with the first surface of the first base material. A step, a step of filling ink in the space in the through hole from the other end side, a step of transferring the ink filled in the space in the through hole to the transfer object, and the step of the first base material A cleaning step of cleaning ink adhering to the wall of the through hole of the first surface and the second base material, the cleaning step including the second base material and the first base material of the first base material. It is a manufacturing method of printed matter implemented in the state where it removed at least partially from one side.

  In the printed matter manufacturing method according to the present invention, when viewed along the normal direction of the first surface of the first base material, the through hole of the second base material extends at least partially linearly. And the minimum value of the width | variety of the part extended linearly among the said through-holes may be 20 micrometers or less.

  In the method for producing a printed material according to the present invention, the first base material may be placed on a movable surface plate. Alternatively, the first base material may be a movable surface plate.

  In the method for producing a printed material according to the present invention, a surface roughness of the first surface of the first base material in a region where the second base material is placed may be 0.1 μm or less. As the surface roughness, for example, the maximum height Rmax can be adopted.

  In the method for producing a printed material according to the present invention, the ink may include a conductive material, and the pattern of the printed material may include a conductive wiring.

  The present invention is a printing plate for transferring ink to a printing material, which is a first substrate having a flat first surface and a second substrate having a through hole having one end and the other end. A second substrate placed on the first surface of the first substrate so that the one end of the through hole is in contact with the first surface of the first substrate, The second substrate is a printing plate that is at least partially removable from the first surface of the first substrate.

  According to the present invention, it is possible to easily wash the ink remaining in the grooves of the printing plate, and thus it is possible to easily obtain a high-quality printed matter.

FIG. 1 is a plan view showing a printing plate according to an embodiment of the present invention. FIG. 2 is a longitudinal sectional view of the printing plate of FIG. 1 viewed from the II-II direction. FIGS. 3A to 3D are views showing a method of transferring ink to a transfer object using a printing plate in the embodiment of the present invention. FIG. 4 is a plan view showing a printed matter obtained in the embodiment of the present invention. FIGS. 5A to 5D are views showing a method of cleaning ink remaining in the grooves of the printing plate in the embodiment of the present invention. FIGS. 6A to 6C are diagrams showing a printing process in a comparative form. FIG. 7 is a diagram showing a printing plate according to a modification of the present embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. First, a printing plate 10 according to the present embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a plan view and a longitudinal sectional view showing a printing plate 10 according to the present embodiment.

(Printed version)
As shown in FIG. 1, the printing plate 10 has a groove 11 filled with ink. The structure of the groove 11 will be described with reference to FIG.

  As shown in FIG. 2, the printing plate 10 includes a first base 12 having a flat first surface 13 and a second surface 14 facing the first surface 13, and a first of the first base 12. And a second base material 16 placed on the surface 13. In the present embodiment, the second base material 16 is configured to be at least partially removable from the first surface 13 of the first base material 12. In FIG. 2, reference numeral 17 represents the first surface of the second base material 16, and reference numeral 18 represents the second surface of the second base material 16. The second base material 16 is placed on the first base material 12 so that the second surface 18 faces the first surface 13 of the first base material 12.

  FIG. 2 shows an example in which the position of the side end portion of the first base material 12 and the position of the side end portion of the second base material 16 coincide with each other. However, as long as the second surface 18 of the second base material 16 can be in close contact with the first surface 13 of the first base material 12 around a through-hole 20 of the second base material 16 described later, the first base material. The positional relationship between the side end portions of 12 and the side end portions of the second base material 16 is not particularly limited. For example, the side edge part of the 2nd base material 16 may be located inside the side edge part of the 1st base material 12, or the side edge part of the 2nd base material 16 is the 1st base material. You may be located outside 12 side edge parts.

  As shown in FIG. 2, a through-hole 20 that penetrates the second base material 16 is formed between the first surface 17 and the second surface 18 in the second base material 16. In FIG. 2, the code | symbol 21 represents the end of the through-hole 20 located in the 2nd surface 18 side, and the code | symbol 22 represents the other end of the through-hole 20 located in the 1st surface 17 side. As shown in FIG. 2, the second base material 16 is placed on the first surface 13 of the first base material 12 such that one end 21 of the through hole 20 is in contact with the first surface 13 of the first base material 12. Has been. By placing the second base material 16 on the first base material 12 in this way, the printing plate 10 has the first surface 13 of the first base material 12 and the through holes 20 of the second base material 16. Thus, the grooves 11 partitioned by the above are formed.

  By the way, if there is a gap between the first surface 13 of the first base material 12 and the second surface 18 of the second base material 16 around the through-hole 20, the ink filled in the through-hole is a gap. It is thought that it leaks out from. Therefore, it is preferable that the first surface 13 of the first substrate 12 and the second surface 18 of the second substrate 16 are configured to be in close contact with each other. For example, it is conceivable that at least one of the first surface 13 of the first substrate 12 and the second surface 18 of the second substrate 16 is made of an adhesive material. Alternatively, an adhesive layer may be interposed between the first surface 13 of the first substrate 12 and the second surface 18 of the second substrate 16.

  Further, the surface roughness of the first surface 13 of the first base material 12 and the surface roughness of the second surface 18 of the second base material 16 are set to a predetermined value or less. A method of suppressing the formation of a gap between the first surface 13 and the second surface 18 of the second base material 16 is also conceivable. For example, it is conceivable to set the surface roughness of the first surface 13 of the first substrate 12 and the surface roughness of the second surface 18 of the second substrate 16 to 0.1 μm or less. As the surface roughness, the maximum height Rmax defined in JIS B0601-1982 can be adopted.

(Groove shape)
Next, the shape of the groove 11, that is, the through hole 20 when the printing plate 10 is viewed along the normal direction of the first surface 13 of the first substrate 12 will be described. FIG. 1 shows an example in which the through-hole 20 has a shape corresponding to the wiring that becomes the electrode of the touch panel. The through-hole 20 extends at least partially in a linear shape when viewed along the normal direction of the first surface 13 of the first substrate 12. Considering the requirements for wiring miniaturization, it is considered that the minimum value of the width W of the linearly extending portion of the through hole 20 is 20 μm or less. Even in such a case, according to the present embodiment, it is possible to easily wash the ink remaining in the through hole 20 as described later.

  Next, the dimension of the printing plate 10 in the thickness direction of the printing plate 10 will be described. In FIG. 2, the depth of the groove 11, that is, the height of the through hole 20 is represented by the symbol D. The height D of the through hole 20 is determined according to a request for the thickness of the wiring formed on the touch panel, and is set in a range of 25 μm to 100 μm, for example.

(Material of printing plate)
As long as the first base material 12 and the second base material 16 are at least partially detachable from each other, the material constituting the first base material 12 and the second base material 16 is not particularly limited. For example, glass or the like can be used as a material constituting the first base material 12 and the second base material 16. In addition, the material which comprises the 1st base material 12 and the material which comprises the 2nd base material 16 may be the same, and may differ.

  In addition, the 2nd base material 16 may be comprised so that it may have flexibility, in order to make the operation | work which removes the 2nd base material 16 from the 1st base material 12 in the washing | cleaning process mentioned later. Alternatively, the second base material 16 may be configured to have a rigidity that does not bend when removed, in order to facilitate the operation of cleaning the ink attached to the wall surface of the through hole 20.

  Next, the operation and effect of the present embodiment having such a configuration will be described. Here, a method for producing a printed matter including a pattern formed of ink using the above-described printing plate 10 will be described. In this embodiment, the “pattern” has a thickness formed along a predetermined trajectory such as a pattern for providing a visual effect and a wiring described later for providing an electrical effect. It means a real thing. The “predetermined trajectory” is a concept including not only a regular trajectory but also a trajectory determined randomly.

  First, the above-described first base material 12 and the above-described second base material 16 in which the through hole 20 having the one end 21 and the other end 22 are formed are prepared. Next, as shown in FIG. 3A, the second base material 16 is placed on the first surface of the first base material 12 so that one end 21 of the through hole 20 contacts the first surface 13 of the first base material 12. 13 is carried out. Thereby, the printing plate 10 in which the grooves 11 are formed can be obtained. As shown in FIG. 3A, the printing plate 10 is placed on a movable first surface plate 24.

  As long as the second base material 16 is not significantly displaced with respect to the first base material 12 due to the blanket cylinder 41 coming into contact with the second base material 16 during the transfer step described later, the second base material 16 is the first base. Whether it is fixed to the material 12 is not particularly limited. For example, an adhesive layer or the like is interposed between the first surface 13 of the first base material 12 and the second surface 18 of the second base material 16, whereby the second base material 16 is relative to the first base material 12. You may make it fix firmly. The adhesive layer may be provided over the entire area of the second surface 18 of the second base material 16, or only on a part of the second surface 18 of the second base material 16, for example, only on the periphery of the second surface 18. It may be provided. In addition, inclusions such as an adhesive layer may not be present between the first surface 13 of the first substrate 12 and the second surface 18 of the second substrate 16.

  By the way, as mentioned above, the 1st surface 13 of the 1st substrate 12 is constituted as a flat surface. This is as long as the through hole 20 of the second base material 16 overlaps the first surface 13 of the first base material 12 when viewed along the normal direction of the first surface 13 of the first base material 12. This means that the function of the printing plate 10 can be exhibited. That is, it means that the positioning accuracy of the second base material 16 with respect to the first base material 12 is not particularly required during the placing process. Therefore, according to this Embodiment, a mounting process can be easily implemented using simple equipment.

  Next, a filling step of filling the ink 42 into the space in the through hole 20 from the other end 22 side is performed. For example, as shown in FIG. 3A, first, the ink 42 is applied on the first surface 17 of the second substrate 16, and then the ink 42 on the first surface 17 is scratched using a squeegee 43. As a result, as shown in FIG. 3B, the ink 42 can be filled into the space in the through hole 20.

  Next, a transfer process for transferring the ink 42 filled in the space in the through hole 20 to the transfer target 24 is performed. Here, first, the first surface plate 24 is moved toward the blanket 40 wound around the roll-shaped blanket cylinder 41, and the first surface 17 of the second base material 16 is brought into contact with the blanket 40. As a result, the ink 42 filled in the space in the through hole 20 is delivered to the blanket 40 as shown in FIG. As shown in FIG. 3C, the ink 42 filled in the space in the through hole 20 is not entirely received by the blanket 40, but a part of the ink 42 enters the space in the through hole 20. Remains.

  Thereafter, after the first surface plate 24 and the printing plate 10 are retracted, the transfer object 26 is brought into contact with the ink 42 on the blanket 40 as shown in FIG. 3D, and the ink 42 is transferred to the transfer object 26. Transcript. As a result, as shown in FIG. 4, it is possible to obtain a printed matter 30 including a pattern 32 formed by the ink 42. The transfer object 26 may be placed on a movable second surface plate 28 as shown in FIG. 3D, for example. In this case, the transfer object 26 can be brought into contact with the ink 42 on the blanket 40 by moving the second surface plate 28 and the transfer object 26 toward the blanket 40.

  Here, when an ink containing a conductive material is used as the ink 42, it is possible to produce a pattern 32 of the printed matter 30 that includes a conductive wiring. For example, as described above, as the printed material 30, a circuit board on which wirings to be touch panel electrodes are formed can be manufactured. What is obtained as the printed material 30 is not limited to a circuit board for a touch panel. Using the printing plate 10 according to the present embodiment, circuit boards for other electronic devices and printed matter 30 having no electrical conductivity can also be manufactured.

  Next, a method for cleaning the ink 42 remaining in the grooves 11 of the printing plate 10 will be described with reference to FIGS. FIG. 5A shows the printing plate 10 after the transfer process.

  In this case, first, the second base material 16 is removed from the first surface 13 of the first base material 12 as shown in FIG. At this time, the ink 42 remains attached to the first surface 13 of the first substrate 12 and the wall surface 23 of the through hole 20 of the second substrate 16. Next, the ink 42 adhering to the first substrate 12 and the second substrate 16 is washed. A specific cleaning method is not particularly limited, and a known method such as a method of spraying a cleaning liquid toward the ink 42 or a method of wiping the ink 42 using a cloth or the like can be appropriately employed.

  Here, according to the present embodiment, since the second base material 16 is removed from the first base material 12, the ink 42 adhering to the first surface 13 of the first base material 12 passes through the through-hole 20. It is exposed without being surrounded by. Therefore, a force from the cleaning liquid or the cloth can be easily applied to the ink 42 adhering to the first surface 13 of the first substrate 12. For this reason, as shown in FIG.5 (c), the ink 42 on the 1st surface 13 can be wash | cleaned easily. According to the present embodiment, since the second base material 16 is removed from the first base material 12, the ink 42 attached to the wall surface 23 of the through hole 20 of the second base material 16 The force from the cleaning liquid or the cloth can be applied not only from the other end 22 side of the through hole 20 but also from the one end 21 side of the through hole 20. For this reason, as shown in FIG.5 (c), the ink 42 on the 1st surface 13 can be wash | cleaned easily.

  Thereafter, as shown in FIG. 5D, the second base material 16 is placed again on the first surface 13 of the first base material 12. Thus, the printing plate 10 from which the remaining ink 42 has been removed can be prepared again.

  As described above, according to the present embodiment, the printing plate 10 is configured using the first base material 12 and the second base material 16 that are detachable from each other. The 1st base material 12 and the 2nd base material 16 can be wash | cleaned in the state removed from the 1 base material 12, respectively. For this reason, the ink 42 remaining on the printing plate 10 can be easily and sufficiently removed. Therefore, in a transfer process using the printing plate 10 that is performed again thereafter, the ink 42 transferred to the transfer object 26 may be mixed with a fragment of the solidified ink 42, or the grooves 11 of the printing plate 10. Can be prevented from clogging. As a result, a high-quality printed material 30 can be easily obtained.

  In addition, according to the present embodiment, as described above, not only from the other end 22 side of the through hole 20 with respect to the ink 42 attached to the wall surface 23 of the through hole 20 of the second base material 16, A force from the cleaning liquid or the cloth can also be applied from the one end 21 side of the through hole 20. For this reason, even if the minimum value of the width W of the linearly extending portion of the through hole 20 is small, for example, 20 μm or less, the ink 42 attached to the wall surface 23 of the through hole 20 can be easily and sufficiently removed. Can be removed. This makes it possible to easily form a wiring having a small width, for example, a width of 20 μm or less by printing.

(Comparison form)
Next, the effect of this embodiment will be described in comparison with a comparative embodiment. FIGS. 6A to 6C are diagrams illustrating a printing process in a comparative form.

  In the comparative form, as shown in FIG. 6A, the groove 71 of the printing plate 70 is configured as a through-hole formed in the surface of the base material 72. For this reason, when the width of the groove 71 is small or the depth of the groove 71 is large, it is considered that the cleaning liquid 73 does not easily reach the bottom or corner of the groove 71. As a result, as shown in FIG. 6B, it is conceivable that the ink 42 partially remains in the groove 71 even after the cleaning process for cleaning the ink 42 remaining in the groove 71 is performed. In this case, as shown in FIG. 6C, the ink 42 b newly filled in the groove 71 in the subsequent printing process is mixed in the remaining ink 42 a and the groove 71. For this reason, it is conceivable that a fragment of the old ink 42b is mixed with the new ink 42b and the printing quality is deteriorated. Further, when the solidified old ink 42b is accumulated in the groove 71, the groove 71 of the printing plate 70 is clogged, and the amount of ink passed from the groove 71 of the printing plate 70 to the blanket or the transfer object becomes insufficient. It can also be thought of.

  On the other hand, according to the present embodiment, since the first base material 12 and the second base material 16 can be washed with the second base material 16 removed from the first base material 12, printing can be performed. The ink 42 remaining on the plate 10 can be easily and sufficiently removed. Accordingly, it is possible to prevent the old ink from being mixed with the new ink and the groove 11 of the printing plate 10 from being clogged.

Modifications Various modifications can be made to the above-described embodiment. Hereinafter, modified examples will be described with reference to the drawings as necessary. In the following description and the drawings used in the following description, the same reference numerals as those used for the corresponding parts in the above embodiment are used for the parts that can be configured in the same manner as in the above embodiment. A duplicate description is omitted. In addition, when it is clear that the operational effects obtained in the above-described embodiment can be obtained in the modified example, the description thereof may be omitted.

(Modification of the first base material)
In the present embodiment described above, an example in which the first base material 12 is placed on the movable first surface plate 24 and the second base material 16 is placed on the first base material 12. Indicated. However, the present invention is not limited to this, and as shown in FIG. 7, the second base material 16 in which the through holes 20 are formed may be placed on the movable first surface plate 24. That is, you may utilize the 1st surface plate 24 as the 1st base material 12 in the above-mentioned this Embodiment. In this case, the groove 11 of the printing plate 10 is partitioned by the surface of the first surface plate 24 and the through hole 20 of the second base material 16.

(Modification of cleaning process)
Further, in the above-described embodiment, an example is shown in which the cleaning process for cleaning the remaining ink 42 is performed in a state where the second base material 16 is entirely removed from the first base material 12. . However, the present invention is not limited to this, and the ink 42 adhering to the through hole 20 to be cleaned is removed from the cleaning liquid or the cloth from both the other end 22 side and the one end 21 side of the through hole 20. As long as a force can be applied, the second base material 16 may remain in close contact with the first base material 12. In other words, the second substrate 16 only needs to be at least partially removed from the first surface 13 of the first substrate 12 during the cleaning process.

(Blanket variant)
Further, in the above-described embodiment, the example in which the blanket 40 is wound around the roll-shaped blanket cylinder 41 is shown. However, the shape of the blanket 40 is not particularly limited as long as the ink 42 filled in the groove 11 of the printing plate 10 can be received. For example, although not shown, the blanket 40 may have a flat plate shape.

(Modification of transfer process)
In the above-described embodiment, the example in which the ink 42 filled in the groove 11 of the printing plate 10 is transferred to the transfer target 26 via the blanket 40 has been described. However, the present invention is not limited to this. The ink 42 filled in the grooves 11 of the printing plate 10 may be directly transferred to the transfer target 26.

(Other variations)
In the above-described embodiment, the first surface plate 24 on which the printing plate 10 is placed and the second surface plate 28 on which the transfer object 26 is placed are attached to the blanket cylinder 41 during the transfer process. The example which moves toward the wound blanket 40 was shown. However, the present invention is not limited to this, and the ink 42 may be transferred or transferred by moving the blanket 40 toward the printing plate 10 or the transfer target 26.

  In addition, although some modified examples with respect to the above-described embodiment have been described, naturally, a plurality of modified examples can be applied in combination as appropriate.

DESCRIPTION OF SYMBOLS 10 Printing plate 11 Groove | groove 12 1st base material 13 1st surface 14 2nd surface 16 2nd base material 17 1st surface 18 2nd surface 20 Through-hole 21 One end 22 Other end 23 Wall surface 24 1st surface plate 26 Transfer object 28 Second plate 30 Printed matter 32 Pattern 40 Blanket 41 Blanket cylinder 42 Ink

Claims (7)

A method for producing a printed matter including a pattern formed by ink,
Preparing a first base material having a flat first surface and a second base material having a through hole having one end and the other end;
Placing the second base material on the first surface of the first base material such that the one end of the through hole is in contact with the first surface of the first base material;
Filling the space in the through-hole from the other end with ink;
Transferring the ink filled in the space in the through hole to the transfer object;
A cleaning step of cleaning ink adhering to the first surface of the first base material and the wall surface of the through hole of the second base material,
The said washing process is a manufacturing method of printed matter performed in the state where the said 2nd base material was removed from the said 1st surface of the said 1st base material at least partially. When viewed along the normal direction of the first surface of the first base material, the through hole of the second base material extends at least partially linearly;
The printed matter manufacturing method according to claim 1, wherein a minimum value of a width of a portion extending linearly in the through hole is 20 μm or less.   The printed material manufacturing method according to claim 1, wherein the first base material is placed on a movable surface plate.   The printed material manufacturing method according to claim 1, wherein the first base material is a movable surface plate.   The printed matter according to any one of claims 1 to 4, wherein a surface roughness of the first surface of the first base material in a region where the second base material is placed is 0.1 µm or less. Manufacturing method. The ink includes a material having conductivity,
The method for producing a printed material according to claim 1, wherein the pattern of the printed material includes a conductive wiring. A printing plate for transferring ink to a substrate,
A first substrate having a flat first surface;
A second base material having a through hole having one end and the other end, wherein the one end of the through hole is in contact with the first surface of the first base material. A second substrate placed on one surface,
The printing plate, wherein the second substrate is at least partially removable from the first surface of the first substrate.

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