JP6862142B2 - Printing equipment and printing method - Google Patents

Description

The present invention relates to a printing apparatus and a printing method in which ink adhering to a printing plate is printed on a printed body such as a can body via a blanket.

Two-piece cans and three-piece cans are the mainstream containers for alcoholic beverages such as beer and chu-hi, and canned beverages filled with non-alcoholic beverages such as soft drinks. Two-piece cans are, for example, a bottomed tubular (cup-shaped) bottomed can body made by drawing and ironing (DI) molding a flat plate made of aluminum or aluminum alloy, and the upper end opening of the can body. It is composed of a can lid to be fitted. When producing a canned beverage in a two-piece can, it is customary to print on the can body, fill the can body with the beverage, and attach a can lid. In the present specification, a can body with a bottom before filling a beverage may be referred to as a "beverage can", and a canned beverage may be referred to as a "beverage can".

Conventionally, when printing on the can body of the above-mentioned two-piece can, well-known blanket printing (offset printing) using a blanket is mainly adopted.

For example, Patent Documents 1 to 3 below disclose a printing apparatus for blanket printing on a can body. This printing apparatus includes a printing plate such as a letterpress or intaglio plate and a blanket (blanket sheet), and ink is supplied and adheres to a predetermined position of the printing plate, and the ink on the printing plate is transferred to the blanket. .. Further, when the blanket to which the ink is transferred comes into contact with the can body, the ink on the blanket is transferred to the object to be printed. In this way, a printing pattern such as a predetermined pattern, character, or symbol is printed on a printed object such as a can body.

Generally, in blanket printing, a plurality of types of printing plates are provided depending on the type of ink used, the type of printing pattern, and the like, while a plurality of blankets are also provided. Then, ink is sequentially transferred from a plurality of types of printing plates to each blanket, and a predetermined printing pattern is formed for each blanket.

In normal blanket printing, the same printing pattern is formed on a plurality of blankets, but in Patent Documents 1 and 2, a device that enables printing of a different pattern for each blanket on an object to be printed, so-called multi-pattern printing. Printing equipment has been proposed.

The blanket in the multi-pattern printing apparatus of Patent Documents 1 and 2 is provided with a multi-pattern printing area, and a convex portion for a pattern having a different shape is formed in the multi-pattern printing area for each blanket. Then, the ink is supplied and adheres to the area corresponding to the multi-pattern printing area in the printing plate, and the ink is transferred only to the convex portion for the pattern in the multi-pattern printing area of the blanket, and the ink is transferred on the convex portion. Ink is transferred to the object to be printed. In this way, a different pattern is printed on the printed object for each blanket.

Special Table 2015-526317 Special Table 2016-511175 JP 2015-227002

However, in the conventional printing apparatus shown in Patent Documents 1 and 2, although the pattern in the multi-pattern printing area can be changed for each blanket, the ink transferred to the pattern convex portion in the multi-pattern printing area is a single color. Therefore, there is a problem that the printed design becomes a single color, the design lacks variety, and it is difficult to print the design to obtain sufficient appeal.

The present invention has been made in view of the above problems, and it is possible to print a printing pattern such as a different pattern for each blanket, further improve the variety of printing patterns, and further improve the appealability. It is an object of the present invention to provide a printing apparatus and a printing method.

In order to solve the above problems, the present invention provides the following means.

[1] A plurality of printing plates including the first and second printing plates, and a plurality of blankets having a convex portion for printing and including the first and second blankets, and ink on the plurality of printing plates. Is transferred to the printing convex portion of each blanket, and the ink of the printing convex portion is transferred to the printing object so that a predetermined printing pattern is printed on the printing object. It ’s a printing device,
The printing convex portion is separated into a plurality of convex portion constituent portions including the first and second convex portion constituent portions.
The first printing plate is provided with a first ink adhering portion corresponding to the first convex portion constituent portion, and the second printing plate is provided with a second ink adhering portion corresponding to the second convex portion constituent portion. Is provided,
The first convex component of the first blanket is formed in a shape different from that of the first convex component of the second blanket, and / or the second convex component of the first blanket. Is formed in a shape different from that of the second convex portion of the second blanket.
The ink adhering to the first ink adhering portion of the first printing plate is transferred to the first convex portion constituent portion of the first and second blankets, respectively, and the second ink adhering to the second printing plate. A printing apparatus characterized in that the ink adhering to the portion is configured to be transferred to the second convex portion constituent portion of the first and second blankets, respectively.

[2] The first convex portion constituent portion is configured as a convex portion inner portion which is an inner portion of the printing convex portion, and the second convex portion constituent portion is outside the printing convex portion. The printing apparatus according to item 1 above, which is configured as an outer portion of a convex portion which is a portion.

[3] The printing apparatus according to item 2 above, wherein the outer portion of the convex portion is arranged so as to surround the outer peripheral portion of the inner portion of the convex portion.

[4] The blanket is provided with a multi-pattern printing area, and the printing convex portion is provided in the multi-pattern printing area.
Item 3. The item 1 to 3 above, wherein the convex portion for printing is formed convex by cutting a region other than the convex portion for printing in the multi-pattern printing region. Printing equipment.

[5] The printing apparatus according to item 4 above, wherein laser engraving is used as the cutting process.

[6] The printing apparatus according to any one of items 1 to 5 above, wherein the printed object is made of an aluminum or aluminum alloy can body used for a container for canned beverages.

[7] Predetermined printing on an object to be printed using a plurality of printing plates including the first and second printing plates and a plurality of blankets having a convex portion for printing and including the first and second blankets. When printing a pattern, the printing method is such that the inks on the plurality of printing plates are transferred to the printing convex portions of each blanket, and the inks on the printing convex portions are transferred to the printing object. There,
The printing convex portion is separated into a plurality of convex portion constituent portions including the first and second convex portion constituent portions.
The first printing plate is provided with a first ink adhering portion corresponding to the first convex portion constituent portion, and the second printing plate is provided with a second ink adhering portion corresponding to the second convex portion constituent portion. Provide,
The first convex component of the first blanket is formed in a shape different from that of the first convex component of the second blanket, and / or the second convex component of the first blanket is formed. Is formed in a shape different from that of the second convex portion of the second blanket.
When the inks on the plurality of printing plates are transferred to the printing convex portions of the first and second blankets, the inks adhering to the first ink adhering portions of the first printing plate are transferred to the first and second printing plates. The ink adhered to the second ink adhering portion of the second printing plate was transferred to the second convex portion constituent portion of each blanket while being transferred to the first convex portion constituent portion of the blanket. A printing method characterized by.

According to the printing apparatus of the present invention [1], the printing convex portion of the blanket is separated into a plurality of convex portion constituent portions, and the ink is transferred to each convex portion constituent portion separately. Therefore, for each blanket. In addition to being able to print print patterns such as different patterns, it is possible to print multicolor print patterns, and it is possible to improve the variety of print patterns and further improve the appeal.

According to the printing apparatus of the inventions [2] and [3], the inner portion and the outer portion of the print pattern can be set to different colors, so that the above effect can be obtained more reliably.

According to the printing apparatus of the present invention [4], since the multi-pattern printing area in the blanket is cut to form the convex portion for printing remaining, when the printing plate is brought into contact with the blanket, the plate surface of the printing plate is formed. Can be evenly contacted with the convex portion of the blanket and the surface of the blanket over the entire area. Therefore, the ink on the printing plate can be transferred to the blanket accurately and reliably, and a printing pattern such as an ideal pattern without disturbance can be printed.

According to the printing apparatus of the present invention [5], since the blanket is cut by laser engraving to form a convex portion for printing, a high-precision groove (concave portion), that is, a high-precision convex portion can be formed and is delicate. Moreover, a clear print pattern can be printed, and the appealability can be further improved.

According to the printing apparatus of the invention [6], since printing is performed on the can body of the canned beverage container, a highly appealing printing pattern can be printed, and a canned beverage having a high purchasing motivation can be produced. be able to.

According to the printing method of the invention [7], similarly to the above-mentioned device invention, it is possible to print a printing pattern such as a pattern different for each blanket, and further, it is possible to print a multicolor printing pattern, and the variety of printing patterns is improved. It can be done, and the appealability can be further improved.

FIG. 1 is a block diagram for explaining a schematic configuration of a printing apparatus according to an embodiment of the present invention. FIG. 2 is a block diagram for explaining the configuration of a printing plate and a blanket applied to the printing apparatus of the embodiment. FIG. 3 is a diagram for explaining a design of a printing can printed by the printing apparatus of the embodiment.

FIG. 1 is a block diagram for explaining a schematic configuration of a multi-pattern printing apparatus according to an embodiment of the present invention. In the multi-pattern printing apparatus of the present embodiment, a can body (beverage can) W made of aluminum or an aluminum alloy in a two-piece can constituting a container for a canned beverage (beverage can) is used as a printing body. A predetermined printing pattern such as a pattern, a character, a symbol, etc. is printed on the outer peripheral surface of the body W.

As shown in FIG. 1, the multi-pattern printing apparatus of the present embodiment includes a blanket wheel 5, a plurality of plate cylinders 6 provided along the outer circumference of the blanket wheel 5, and a can holding and moving mechanism 7 adjacent to the blanket wheel 5. And have.

A printing plate 1 formed according to a printing pattern such as a pattern printed on the can cylinder W is provided on the outer peripheral surface of the plate cylinder 6. In the present embodiment, the printing plate 1 is made of a letterpress plate, but it may be made of an intaglio plate. The plate cylinder 6 is rotatably configured, and ink is supplied to and adheres to the image line portion on the printing plate 1 of the plate cylinder 6 from an ink supply means (not shown). The ink supply means is composed of, for example, a plurality of ink receivers filled with inks of each color required for each printing brand, a plurality of ink transfer rolls for supplying ink from the ink receivers to the printing plate 1, and the like.

A plurality of blankets 2 for printing are provided on the outer peripheral surface of the blanket wheel 5. Each blanket 2 is configured to come into contact with the printing plate 1 of the plate cylinder 6 and also come into contact with the can cylinder W held by the can holding / moving mechanism 7.

The can holding / moving mechanism 7 is held by a mandrel (core) 71, which is inserted into a can body W taken in by a can body taking-in means (not shown) and rotatably holds the can body W in a negative pressure state, and a mandrel 71. It is provided with a rotating plate 72 for sequentially rotating the can body W to the blanket wheel 5 side. The can body W is washed and dried before printing. Further, if necessary, a colorless or white undercoating treatment (including a drying treatment) is applied.

In the multi-pattern printing apparatus having this configuration, various inks are appropriately supplied and adhered to the image area of each printing plate 1 via the ink supply means, and the inks adhered to the plurality of printing plates 1. However, the inks of the plurality of printing plates 1 are sequentially transferred to the required portions on each blanket 2 on the rotating blanket wheel 5, and a reverse-shaped printing pattern is formed. Then, the print pattern transferred to the blanket 2 comes into contact with the can body W held by the mandrel 71, and the can body W makes one rotation with respect to the blanket 2 (actually, one or more rotations by adding a slight overlap portion). In the meantime, the inverted print pattern on the blanket 2 is transferred to the outer peripheral surface of the can body W. In this way, a predetermined printing pattern formed on the portion where the ink of the plurality of printing plates 1 is required is printed on the can body W.

The printed can body W is subjected to a baking process after a clear paint is applied to the outer peripheral surface of the can body W and the ground contact portion of the bottom wall of the can body W is further coated.

FIG. 2 is a block diagram for explaining a printing plate 1 and a blanket 2 applied to the multi-pattern printing apparatus of the present embodiment, and FIG. 3 is a printing can (can body) printed by the multi-pattern printing apparatus of the present embodiment. It is a figure for demonstrating a design. In this embodiment, in order to facilitate the understanding of the invention, a case where the printing plate 1 has two types and the blanket 2 has three types will be described as an example. Needless to say, in the present invention, the type of the printing plate 1 may be 3 or more, the number of used printing plates 1 may be 3 or more, and the types of the blanket 2 may be 2 or 4 or more. However, the number of blankets 2 used may be 2 or 4 or more.

As shown in FIGS. 2 and 3, the can body W (printing cans W1 to W3) printed by the multi-pattern printing apparatus of the present embodiment is composed of a circle (circle), a square, or the like as its printing pattern. There are a symbol 4, a letter 45 of "A", and a letter 46 of "B".

In FIG. 2, a part of the right side of the letter "B" of the printing cans W1 to W3 is a blind spot. Further, in FIGS. 2 and 3, the parts of the symbol 4 and the characters 45 and 46 are hatched, but the parts having the same hatching type indicate that they have the same color, and the hatching types are different. The parts show different colors. Here, in the present embodiment, the printing cans W1 to W3 are the printed cans W, and the cans W are used in the concept including the printing cans W1 to W3. Further, when the symbols including the first to third symbols 41 to 43 are generically referred to, they are referred to as symbol 4.

In the present embodiment, the characters 45 and 46 in the printing cans W1 to W3 have the same shape and only one type, but the symbol 4 includes three types of the first to third symbols 41 to 43 having different shapes. ing. That is, in the present embodiment, the first to third types of printing cans W1 to W3 having different symbols 4 are manufactured.

As shown in FIGS. 2 and 3, the symbol 4 of the first printing can W1 is the first symbol 41, which is a filled circular symbol inner portion (first symbol constituent portion) 4a and the symbol inner portion 4a. It is composed of a square annular symbol outer portion (second symbol constituent portion) 4b arranged so as to surround the outer circumference. The symbol 4 of the second printing can W2 is the second symbol 42, which is a circle arranged so as to surround the filled circular symbol inner portion (first symbol constituent portion) 4a and the outer circumference of the symbol inner portion 4a. It is composed of an annular symbol outer portion (second symbol constituent portion) 4b. The symbol 4 of the third printing can W3 is the third symbol 43, which is a circle arranged so as to surround the filled square symbol inner portion (first symbol constituent portion) 4a and the outer circumference of the symbol inner portion 4a. It is composed of an annular symbol outer portion (second symbol constituent portion) 4b.

As will be described later, the design inner portion 4a and the symbol outer portion 4b of each of the symbols 41 to 43 are printed in different colors. Further, the letter 45 of "A" and the letter 46 of "B" are printed in different colors, but each letter itself is printed in a single color.

The blanket 2 includes three types of blankets 21 to 23 of the first to third types corresponding to the first to third printing cans W1 to W3. Ink is transferred from the printing plate 1 to the blankets 21 to 23 in the form of the letters "A" and "B" corresponding to the letters "A" and "B" 45 and 46 of the printing cans W1 to W3. Character areas 35 and 36 are provided.

Here, in FIG. 2, the shape of the ink “B” transferred to the character region 36 in the blanket 2 is originally a shape in which the left and right sides are reversed, but in the present embodiment, the invention is easily understood. Therefore, the shape of "B" is shown as a normal shape that is not inverted. Needless to say, the shape of the ink "A" transferred to the character region 35 is a line-symmetrical shape and is arranged along the can axis direction, so that the shape is the same as shown in the figure.

Each blanket 21 to 23 is provided with a multi-pattern printing area 3 corresponding to the design 4 of the printing cans W1 to W3. The multi-pattern printing area 3 includes three types of multi-pattern printing areas 31 to 33 of the first to third types corresponding to the three types of symbols 41 to 43, respectively. The multi-pattern printing areas 31 to 33 are provided with convex printing portions 3a and 3b so as to match the shapes of the symbols 41 to 43. The printing convex portions 3a and 3b are formed to be convex by cutting (grooving) the regions other than the printing convex portions 3a and 3b in the multi-pattern printing regions 31 to 33 by laser engraving. ing. That is, the convex portions 3a and 3b for printing are the portions of the multi-pattern printing area 3 that are residually formed as unengraved portions that are not cut. Therefore, the tip surface (upper end surface) of the printing convex portions 3a and 3b is a flat portion (blanket surface) and is a portion to which the ink is transferred. The upper surface of the blankets 21 to 23 including the character areas 35 and 36, and the areas other than the multi-pattern printing areas 31 to 33 are also flat portions (blanket surfaces).

Since the printing convex portions 3a and 3b have a shape corresponding to the symbols 41 to 43, the convex portion inner portion (first convex portion constituent portion) which is an inner portion of the printing convex portion is similarly to the symbols 41 to 43. It is separated into 3a and an outer portion of the convex portion (second convex portion constituent portion) 3b, which is an outer portion of the convex portion for printing.

Specifically, in the multi-pattern printing area 31 of the first blanket 21, a circular convex portion inner portion 3a and a square annular convex portion arranged so as to surround the outer periphery of the convex portion inner portion 3a. The outer portion 3b is arranged. In the multi-pattern printing area 32 of the second blanket 22, a circular convex portion inner portion 3a and an annular convex portion outer portion 3b arranged so as to surround the outer periphery of the convex portion inner portion 3a are arranged. There is. In the multi-pattern printing area 33 of the third bracket 23, a square convex portion inner portion 3a and an annular convex portion outer portion 3b arranged so as to surround the outer periphery of the convex portion inner portion 3a are arranged. There is.

In the present embodiment, the blankets including the first to third blankets 21 to 23 are collectively referred to as the blanket 2. Further, when the multi-pattern printing area including the first to third multi-pattern printing areas 31 to 33 is generically referred to, it is referred to as the multi-pattern printing area 3.

The printing plate 1 includes two types of printing plates 11 and 12 of a first type and a second type. In the present embodiment, when the printing plates including the first and second printing plates 11 and 12 are generically referred to, they are referred to as the printing plate 1.

In the present embodiment, the printing plates 11 and 12 are composed of letterpress plates in which the portions to which the ink adheres are formed in a convex shape. The first printing plate 11 is provided with a character ink adhering portion 15 having an "A" shape corresponding to the character 45 of the "A" of the can body W, and corresponds to the convex inner portion 3a of the blanket 3. Therefore, an ink adhering portion (first ink adhering portion) 1a inside the design is provided. The second printing plate 12 is provided with the character ink adhering portion 16 having the shape of "B" corresponding to the character 46 of the "B" of the can body W, and corresponds to the convex outer portion 3b of the blanket 3. Therefore, an ink adhering portion (second ink adhering portion) 1b on the outside of the pattern is provided.

Here, in the present embodiment, the pattern inner ink adhering portion 1a comes into contact with all the convex inner inner portions 3a without contacting any of the convex outer outer portions 3b of the first to third blankets 21 to 23. The ink is formed in a shape that allows ink to be transferred, and the pattern outer ink adhering portion 1b is formed on all the convex outer outer portions 3b without contacting any of the convex inner inner portions 3a of the first to third blankets 21 to 23. It is formed in a shape that allows ink to be transferred by contact.

Specifically, the pattern inner ink adhering portion 1a is formed in a circular shape corresponding to the central portion of the multi-pattern printing area 3 of the blanket 2, and the symbol outer ink adhering portion 1b is formed of the symbol inner ink adhering portion 1a. It is formed in a square shape with a central hole as if the part was removed. In other words, the shape of the ink adhering portion 1a on the inner side of the design and the shape of the ink adhering portion 1b on the outer side of the design have a complementary relationship.

In the present embodiment, the ink supply means (not shown) supplies inks of different colors to the first printing plate 11 and the second printing plate 12. That is, in the first printing plate 11, ink of the same color is supplied to the pattern inner ink adhering portion 1a and the character ink adhering portion 15 having the shape of "A", and in the second printing plate 12, the symbol outer ink is supplied. Ink of the same color is supplied to the adhesion portion 1b and the character ink adhesion portion 16 having the shape of "B". Further, the ink supplied to the design inner ink adhering portion 1a of the first printing plate 11 and the ink supplied to the symbol outer ink adhering portion 1b of the second printing plate 12 are set to different colors.

In the multi-pattern printing apparatus of this embodiment, the printing plates 11 and 12 and the blankets 21 to 23 having the above configurations are provided, and the printing process is performed on the can body W as described below.

First, ink is supplied and adheres to the ink adhesion portions 1a and 15 of the first printing plate 11 from the ink supply means (not shown), and the ink supply means (not shown) is attached to the ink adhesion portions 1b and 16 of the second printing plate 12. ) Supply an ink of a color different from the above ink and adheres.

Subsequently, the ink adhering to the first and second printing plates 11 and 12 is sequentially transferred to the printing protrusions 3a and 3b of the first blanket 21 and the character regions 35 and 36. Similarly, the ink adhering to the first and second printing plates 11 and 12 is sequentially transferred to the printing protrusions 3a and 3b of the second blanket 22 and the character regions 35 and 36, and the ink adhered to the third blanket 23. The prints are sequentially transferred to the convex portions 3a and 3b for printing and the character areas 35 and 36.

After that, when the blankets 21 to 23 to which the ink is transferred come into contact with the can body W, the ink of the blankets 21 to 23 is sequentially transferred to the outer peripheral surface of the can body W, and the symbols 41 to 43 and the characters 45 and 46 are transferred. After printing, the first to third printing cans W1 to W3 are manufactured.

Since the first to third printing cans W1 to W3 thus obtained have different symbols 41 to 43, the appeal to consumers and the like can be improved. Further, since the symbols 41 to 43 of the printing cans W1 to W3 have different colors in the inner portion 4a and the outer portion 4b, the variety of the symbols 41 to 43 is further increased, and the appeal of the symbols 41 to 43 is enhanced. It can be further improved, and canned beverages with sufficient purchasing motivation can be produced.

Further, when forming the convex portions 3a and 3b for printing in the multi-pattern printing area 3 of the blanket 2, the regions other than the convex portions 3a and 3b of the multi-pattern printing area 3 are cut to leave the convex portions 3a and 3b remaining. Therefore, the tip surfaces of the printing convex portions 3a and 3b in the blanket 2 and the blanket surface other than the multi-pattern printing area 3 are arranged in the same plane (one-sided). Therefore, the ink of the printing plate 1 can be accurately and surely transferred to the blanket 2, and the ideal pattern 4 without disturbance can be printed.

That is, if the printing convex portions 3a and 3b of the blanket 2 protrude from the blanket surface, the convex portions 3a and 3b interfere with the plate surface when the printing plate 1 is brought into contact with the blanket 2. The blanket surface does not sufficiently contact the plate surface, the ink of the printing plate 1 cannot be transferred to the blanket 2 with high accuracy, and printing may be disturbed.

On the other hand, in the present embodiment, since the tip surfaces of the printing convex portions 3a and 3b in the blanket 2 and the blanket surface other than the multi-pattern printing area 3 are arranged in the same plane, the plate surface of the printing plate 1 is formed. The printing protrusions 3a and 3b of the blanket 2 and the blanket surface are evenly and without gaps in the entire area. Therefore, as described above, the ink of the printing plate 1 can be accurately and reliably transferred to the blanket 2, and an ideal printing pattern such as a pattern 4 without disturbance can be printed.

Further, in the present embodiment, when forming the convex portions 3a and 3b for printing on the blanket 2, the grooving process is performed by using the laser engraving process, so that the groove (recessed portion) with high precision, that is, the high precision The convex portions 3a and 3b for printing can be formed. Therefore, a delicate and clear pattern can be printed, and the appealability can be further improved.

In the above embodiment, the case of printing three types of symbols 41 to 43 has been described as an example, but the types of symbols and the like are not particularly limited, and in the present invention, two or four or more types of symbols are printed. Etc. may be printed. For example, in a printing device to which 12 blankets are attached, it is possible to print 12 types of patterns and other printing patterns at once. In other words, the number of types of print patterns can be changed with the maximum number of blankets attached to the printing apparatus as the maximum number.

Further, in the above embodiment, the case where the design 4 is printed in two colors has been described as an example, but the type of color of the design or the like is not limited to two colors, and in the present invention, the design or the like may be printed in three or more colors. The print pattern may be printed. For example, in a printing device capable of supplying eight colors of ink, it is possible to print a printing pattern such as a pattern in eight colors. In other words, the number of colors in the print pattern can be changed according to the ink supply capacity of the printing apparatus.

Further, in the above embodiment, the case where the convex portion for printing of the blanket 2 is separated into two, the inner portion 3a of the convex portion and the outer portion 3b of the convex portion, and set to different colors has been described as an example. However, the number of separations of the printing convex portions is not particularly limited, and in the present invention, the printing convex portions may be separated into three or more and set to different colors.

Further, in the above embodiment, the printing convex portion of the blanket 2 is separated into the inside and the outside, but the separation position of the printing convex portion is not particularly limited, and the printing convex portion is separated at any position. You may do so. For example, the convex portion for printing may be separated vertically and horizontally (up, down, left and right), or may be separated by an oblique line segment.

Needless to say, the position and shape of the ink adhering portion of the printing plate may be adjusted according to the separation position and shape of the printing convex portion on the blanket.

Further, in the above embodiment, the case where a pattern such as a circle or a square is formed in the multi-pattern printing area has been described as an example, but the present invention is not limited to this, and in the present invention, a halftone dot pattern or a pattern in the multi-pattern printing area may be used. Printing patterns other than patterns For example, characters, symbols, and the like may be formed.

Further, in the above embodiment, a printing device for printing on a can body (beverage can) has been described as an example, but the present invention is not limited to this, and in the present invention, a printed object other than a beverage can, for example, a flat printing surface. It can also be applied to a printing device designed to print on a printing body of.

The printing apparatus of the present invention can be suitably used, for example, when printing a container of a canned beverage filled with an alcoholic beverage or a non-alcoholic beverage.

1,11,12: Printing plate 1a: Ink adhesion part inside the pattern (first ink adhesion part)
1b: Ink adhesion part on the outside of the design (second ink adhesion part)
2, 21-23: Blanket 3, 31-33: Multi-pattern printing area 3a: Inner portion of convex portion (first convex portion constituent portion)
3b: Outer part of convex part (second convex part constituent part)
4,41-43: Design W, W1-W3: Can body (printed object)

Claims (6)

A plurality of printing plates including the first and second printing plates and a plurality of blankets having a convex portion for printing and including the first and second blankets are provided, and the inks on the plurality of printing plates are each provided. In a printing apparatus in which a predetermined printing pattern is printed on a printing object by being transferred to the printing convex portion of the blanket and the ink of the printing convex portion is transferred to the printing object. There,
The printing convex portion is separated into a plurality of convex portion constituent portions including the first and second convex portion constituent portions.
The first printing plate is provided with a first ink adhering portion corresponding to the first convex portion constituent portion, and the second printing plate is provided with a second ink adhering portion corresponding to the second convex portion constituent portion. Is provided,
The first convex component of the first blanket is formed in a shape different from that of the first convex component of the second blanket, and / or the second convex component of the first blanket. Is formed in a shape different from that of the second convex portion of the second blanket.
The ink adhering to the first ink adhering portion of the first printing plate is transferred to the first convex portion constituent portion of the first and second blankets, respectively, and the second ink adhering to the second printing plate. The ink adhering to the portion is configured to be transferred to the second convex portion component of the first and second blankets, respectively .
The blanket is provided with a multi-pattern printing area, and the printing convex portion is provided in the multi-pattern printing area.
A printing apparatus characterized in that the convex portion for printing is formed in a convex shape by forming a region other than the convex portion for printing in the multi-pattern printing region into a concave shape by cutting. The first convex portion constituent portion is configured as a convex portion inner portion which is an inner portion of the printing convex portion, and the second convex portion constituent portion is an outer portion of the printing convex portion. The printing apparatus according to claim 1, which is configured as a convex outer portion. The printing apparatus according to claim 2, wherein the outer portion of the convex portion is arranged so as to surround the outer peripheral portion of the inner portion of the convex portion. The printing apparatus according to any one of claims 1 to 3, wherein laser engraving is used as the cutting process. The printing apparatus according to any one of claims 1 to 4 , wherein the printed body is made of a can body made of aluminum or an aluminum alloy used for a container of a canned beverage. A predetermined print pattern is printed on an object to be printed by using a plurality of printing plates including the first and second printing plates and a plurality of blankets having a convex portion for printing and including the first and second blankets. This is a printing method in which the inks on the plurality of printing plates are transferred to the printing convex portions of each blanket, and the inks on the printing convex portions are transferred to the printing object.
The printing convex portion is separated into a plurality of convex portion constituent portions including the first and second convex portion constituent portions.
The first printing plate is provided with a first ink adhering portion corresponding to the first convex portion constituent portion, and the second printing plate is provided with a second ink adhering portion corresponding to the second convex portion constituent portion. Provide,
The first convex component of the first blanket is formed in a shape different from that of the first convex component of the second blanket, and / or the second convex component of the first blanket is formed. Is formed in a shape different from that of the second convex portion of the second blanket.
When the inks on the plurality of printing plates are transferred to the printing convex portions of the first and second blankets, the inks adhering to the first ink adhering portions of the first printing plate are transferred to the first and second printing plates. While transferring to the first convex portion of the blanket and transferring the ink adhering to the second ink adhering portion of the second printing plate to the second convex constituent of each blanket ,
The blanket is provided with a multi-pattern printing area, and the printing convex portion is provided in the multi-pattern printing area.
A printing method characterized in that the convex portion for printing is formed in a convex shape by forming a region other than the convex portion for printing in the multi-pattern printing region into a concave shape by cutting.

Images