JPH08174802A - Registering mark - Google Patents

Abstract

PURPOSE: To provide a registering mark in which the registering error of colors in the case of multi-color printing can be instantaneously visually easily detected. CONSTITUTION: A registering mark has N pieces of color marks corresponding to N types of colors necessary to register at the time of multi-color printing. Accordingly, the registering mark has a reference pattern which has radiation lines in which first color marks U1 are radiated at an equal angle from central points or the corners of a regular polygonal shape and the sides of the shape, and a block pattern in which second to N color marks (U2 to UN) can be disposed at the sides of the reference pattern at a predetermined distance from the straight lines of the parts for forming the reference pattern.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a registration mark for each color separation in multicolor printing.

[0002]

2. Description of the Related Art Conventionally, a decorative ink such as a wood grain pattern, a stone grain pattern or an abstract pattern is used for printing a decorative paper used for surface makeup of interior building materials, furniture, office equipment, light electric appliances and the like. 4-1
It is printed 0 times. In this case, it is indispensable to control the positional accuracy of so-called registration accuracy for each color separation so-called registration accuracy to a predetermined level in a short time by visual observation in order to reduce the quality loss rate of decorative paper and obtain sharp print quality. Since it is an element, some easy-to-use registration marks have been proposed in place of the cross mark shown in FIG. In Japanese Examined Patent Publication No. 55-6507, there is a register for checking registration accuracy by superimposing rectangular color-separating color marks of similar shapes having a common center point as shown in FIG. 5B and having different sizes. Alignment marks have been proposed, and further, JP-A-63-92455 and JP-B-62-2003.
Japanese Patent Laid-Open No. 3-221483 and Japanese Patent Laid-Open No. 3-221483 print a frame in which rectangles, circles, etc. of a certain size are arranged in a row with a specific color separation as shown in FIG. In this frame, a pattern similar in shape to the frame is printed in each color and the registration accuracy is determined by the size of the space between the pattern and the frame. Also,
Conventional register mark is also used in combination with the above pattern.

[0003]

However, the conventional register mark alone has a small number of color separations, and when the printing color is dark, there are relatively few problems, but it is assumed that the number of color separations and the number of light colors will increase. There is a problem in that it becomes extremely difficult to determine the error, and quick visual registration cannot be dealt with. In the case of the registration mark in which the rectangular patterns sharing the center point are overlapped as shown in FIG. 5B, there are the following problems. It is difficult to see when the color separations overlap, U
On the other hand, it is easy to check the shift between two adjacent colors such as U2 shift and U3 shift to U2, but there is a shift of the other color shift from the reference special color split to U1 like U3. It's hard to confirm. Since the registration is generally performed by aligning U1 with U2 and U2 with U2, the register misalignment is integrated and high precision (± 0.5 m /
The registration of m) becomes impossible. Further, in the case of multicolor printing, the mark size has a problem that the printing margin disappears unless the width of the enlarged paper is expanded to the periphery. Also, FIG.
When printing other color separation patterns on a frame printed with a specific color separation as in (c), it is easy to check the registration accuracy regardless of the number of color separations, regardless of the hue of the color separation. Further, it is only necessary to correct the misregistration of each color separation with respect to a specific color separation and perform the registration, which is an improvement in that the registration error does not accumulate as described above. However, since the (total number of colors-1) frame is provided, the area occupied by the registration mark becomes too long when the number of colors is increased. Generally, it is necessary to provide a printing space for the product name, color gradation scale, automatic registration mark, etc. in the margins of both ears of the printed material, and this space may be insufficient if the pattern repeat cycle is short. is there. There is a problem that training and labor are still required to visually and instantly determine the misregistration in both the flow direction and the cross direction when the printed matter is flowing by using the registration mark described above. The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a registration mark that makes it easy to instantly visually determine a registration error and does not increase even if the number of color separations increases.

[0004]

The gist of the present invention made to solve the above problems is as follows. (1) In a registration mark composed of N color-separation marks corresponding to each of N color-separation colors that require registration during multicolor printing, the first color-separation mark radiates at an equal angle from the center point. Which is a reference pattern composed of radiation to be emitted or radiation emitted at an equal angle from the corners of the regular polygon and the sides of the regular polygon, and the second to Nth color-separated marks have a constant distance from the straight line of each part constituting the reference pattern. And a block pattern that can be arranged around the reference pattern. (2) The first color-separation mark has N-1 pieces of the reference patterns arranged in a line, and the second to Nth color-separation marks have one reference pattern with a plurality of block patterns of a kind of color division. Be arranged. (3) The first color-separation mark is composed of at least one reference pattern, and the second to Nth color-separation marks embed the space between adjacent radiations of the reference pattern by one space or two spaces in a predetermined order. It must consist of block patterns arranged in. (4) White characters indicating the order of color separation printing are displayed on the block pattern.

[0005]

According to the present invention, it is possible to instantly visually judge the registration error in the flow direction and the cross direction of printing, and even if the number of color separations is increased, the registration mark is compact and does not require a large space. Can be provided.

[0006]

The present invention will be described in more detail with reference to the drawings.
FIG. 1 is an explanatory diagram of a first embodiment of the present invention, and is a case corresponding to claims 1 and 2. U1 to U4 indicate the printing order of each of the four color separations. Therefore, this symbol may be each printing unit number of the multicolor printing machine. The first color-separation mark U1 is formed by arranging cross-shaped marks in a horizontal row, and the number of them may be 4-1 = 3 in the case of four-color printing. The first color-separation mark U1 is a simple example of a reference pattern formed by lines radiating from one point in a radial pattern at equal angles. The pattern printed with the cross mark is preferably a relatively dark color. After the first color-dividing mark, the color-dividing marks are printed at predetermined positions one after another in the second and third lines, which are composed of block patterns, that is, patterns composed of solid figures. 1
In (a), one block pattern is a square, and four block patterns are arranged in a matrix of two vertical and horizontal patterns with a predetermined interval. In this case, if the register of the second color component with respect to the first color component is accurate (error 0), the four block patterns are printed at the same distance as the cross, as shown in the printed portion of FIG. Next, for the third and fourth color separations,
Each mark is respectively combined with a cross different from the second color separation mark to enable detection of the registration accuracy of each color separation with respect to U1. In this case, if the registration accuracy is printed correctly, the printed image will look like the one shown in the figure, and as a result, a printed product with a correct registration can be obtained. As described above, the registration mark of the first embodiment has the second color pattern in which the four block patterns of the same color are arranged in the vertical and horizontal symmetry with respect to the first color-separation mark U1 including the three cross reference patterns. ~ The fourth color-separation mark corresponds, and it is easy to instantly check the registration accuracy of the second to fourth color-separations with respect to the first color-separation. In the above description, the first color separation is a cross-shaped radiation pattern, but the present invention is not limited to this, and
Other colors such as colors may be used as the radial pattern. Further, when there is a color division that does not require registration such as solid color in all color divisions, it is not necessary to form the registration mark as described above for the color division. That is, when the total number of color separations is M and the number of color separations that does not require registration is m, the registration mark of the present invention may be configured for N = Mm color separations. Further, in FIG. 1A, the registration marks are arranged in a horizontal row, but if the width of the print margin is narrow, they can be arranged in a vertical row or in a vertical 2 rows x horizontal 2 rows.

Next, the effect will be described with reference to FIG. This figure is a mark enlarged view when misregistration occurs between the first color separation mark U1 and the second color separation mark U2.
Now, assuming that the distance between both snoring patterns in which the block pattern is correctly arranged with respect to the reference pattern is d, the distance between two opposing block patterns is 2d, which is constant. U
Assuming that the deviation of 2 from U1 is Δd, the distance between U1 and U2 on the left side of the U1 mark in FIG. 1B is d−Δd, and on the right side is d + Δd. As a result, the size of the register error is visually emphasized as compared with the conventional register mark, and the direction of the register shift is easier to intuitively see.

FIG. 2 is an explanatory view of a second embodiment of the present invention, and is a case corresponding to claims 1 and 3. First
The color-separation mark U1 is a reference pattern (in this case, a cross pattern) made of radiation emitted from the center point at an equal angle. Therefore, the pattern shown in FIG. 2B may be used for U1. Although FIG. 2A shows the case of 6-color printing, the register mark in this figure can handle up to 9-color printing with two cross patterns. Of course, in the case of 5-color printing, one cross pattern is enough. If this cross is replaced with a pattern as shown in FIG. 2B, one radiation pattern can be used as a registration mark of up to 7 colors and 2 radiation patterns up to 13 colors. This is because when the cross pattern is regarded as a graph having a vertical axis and a horizontal axis, one block pattern is arranged for each color separation in each quadrant, and therefore the registration mark is not printed. Fits in an extremely compact space. In the case of FIG. 2B as well, the block patterns of the second color division or less may be arranged between adjacent radiations in exactly the same manner. However, the shape of the block pattern will change because it is premised that it be equidistant from the radiation.
Further, in the present embodiment, U3 and U4 are opposed to U2 via a straight line, and not only U1 to U2 but also U2 to U3,
The register error such as U2 vs. U4 −−−− can be instantly judged. The order of arranging the block patterns of the second and subsequent color separations is not limited to the order of FIG. 2 or clockwise, and the color separations may be arranged so that the color separations desired to maintain good registration accuracy face each other. It should be noted that the color separation other than the first color separation may be used as the reference pattern, and that the registration mark may be composed of only the color separation necessary to be registered among all the color separations.
This is the same as the first embodiment.

FIG. 3 is an explanatory view of a third embodiment of the present invention, which also corresponds to claims 1 and 3, and FIG.
Shows the case of 5-color printing. The first color-separation mark U1 has a regular hexagon at the center, and is a reference pattern composed of all straight lines from which radiation is emitted,
On the other hand, the marks after the second color division have a regular hexagonal shape that can be embedded between adjacent radiations and can keep an equal distance to each straight line. In this embodiment, the two block patterns having point symmetry are used as marks for one-color division and are arranged so as to fill the space between adjacent radiations as shown in FIG. 3 (a). The distances to the straight lines of the respective reference patterns of the pair of block patterns that are point-symmetrical are opposite to the misregistration, that is, if one is positive, the other deviates to minus, so this synergistic effect causes the registration error. Is visually emphasized. In addition, unlike the first and second embodiments, since the number of straight lines of the reference pattern that can identify the misregistration per block pattern increases to three (two radiations and the sides of the regular hexagon), the direction of the registration error, Both quantity and quantity can be detected visually and easily. Also, FIG.
As shown in (b), a reference pattern having a regular octagon at the center may be used and a block pattern for color separation may be arranged around the reference pattern. Generally, if the reference pattern is a 2n square regular polygon and the radiation emitted from its apex, then N
Registration can be performed for the color separations of = n + 1 colors. It should be noted that the color separation other than the first color separation may be used as the reference pattern, and that the registration mark may be configured by only the color separation necessary for registration among all the color separations. The same as in the second embodiment.

It is a matter of course that the color-divided block patterns used for the various registration marks of the present invention can be identified by color, but they are light-colored, hues are approaching, and misregistration is severe. When the patterns are overlapped with each other, it is preferable to use a block pattern in which a color separation number is displayed in the center as shown in FIG. 4 so that the block pattern can be more easily identified. The registration mark according to the present invention is applied to various printing methods such as gravure printing, offset printing and letterpress printing. It is particularly suitable for high-speed rotary printing using a strip-shaped sheet.

[0011]

According to the registration mark of the present invention, the registration error of each color separation can be instantly detected visually in the direction and the amount thereof, and the multi-color registration can be accelerated by accelerating the registration operation. It helps to improve the yield of printed materials, and the space occupied by the registration marks can be made compact. It is possible to coexist with the pattern.

[Brief description of drawings]

FIG. 1 is an explanatory view of a first embodiment of a registration mark according to the present invention.

FIG. 2 is an explanatory view of a second embodiment of the registration mark according to the present invention.

FIG. 3 is an explanatory view of a third embodiment of the registration mark according to the present invention.

FIG. 4 is a block pattern diagram displayed in white characters.

[Fig. 5] Conventional registration mark

[Explanation of symbols]

 U1 to UN First to Nth color separation marks d Regular inter-pattern distance Δd Registration error

Claims (4)

[Claims] 1. N requiring registration in multicolor printing
In the registration mark composed of N color-separating marks corresponding to each of the color separations of the seeds, the first color-separating mark radiates from the center point at an equal angle or from a regular polygonal angle at an equal angle. A block pattern which is a reference pattern composed of radiation and sides of a regular polygon, and in which the second to Nth color-separation marks can be arranged around the reference pattern with a certain distance from the straight line of each part constituting the reference pattern. Registration mark characterized by consisting of. 2. A first color-separation mark is formed on the reference pattern by N
2. A plurality of block patterns of a kind of color separation are arranged in one reference pattern, wherein the second to Nth color separation marks are arranged in one line. Registration mark. 3. A first color separation mark is composed of at least one of the reference patterns, and second to Nth color separation marks have a space between adjacent radiations of the reference pattern, which is one space or two spaces in a predetermined order. The registration mark according to claim 1, wherein the registration mark comprises a block pattern arranged so as to be embedded. 4. The white character indicating the printing order of the color separation is displayed on the block pattern.
Registration mark described.