JPH0145628B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a printing registration mark and a registration method that are used in multicolor printing to facilitate printing registration of each color.

In general, in multi-color printing, the printing registration mark 1 is a cross-shaped printing mark 1 as shown in Fig. 1, and in the case of form printing, the printing registration mark consists of a rectangle and a cross shape surrounding a marginal punch hole 3 as shown in Fig. 2. Marks 5 are provided for each color and all the printing registration marks are superimposed at the same position to match the printing registration of the pattern.

However, when registering using these printed registration marks, each color is superimposed at exactly the same position, which has the disadvantage that light colors, such as yellow, are erased by other dark colors and difficult to see. Furthermore, since it is not possible to control the density of printed colors with conventional printed registration marks, a separate colored ball must be used.

The present invention solves the above-mentioned drawbacks and provides a printed registration mark and registration method that allows the amount of registration deviation of each color to be seen at a glance and allows easy registration.

That is, the first invention of the present invention is a "registration mark for multicolor printing, in which when the registration marks corresponding to each color are superimposed, the position away from the center forms a circle or a polygon; A printed registration mark characterized by being composed of a plurality of straight lines passing through the center of a rectangle, extending radially, and penetrating the circle or polygon.

Further, the second invention of the present invention is a “registration method for multicolor printing, in which when registration marks corresponding to each color are superimposed, positions away from the center form a circle or polygon, and the circle or polygon is The outline of the registration mark, which is made up of a plurality of straight lines passing through the center of the rectangle, extending radially, and penetrating the circle or polygon, is printed in the printing color that will serve as the reference for registration, and each color is printed in a predetermined position of the outline. A registration method characterized by registering by printing a solid pattern of
It is.

The present invention will be explained below based on illustrated embodiments.

In this embodiment, the number of printing colors is six, and FIG. 3 shows the shape of the printed registration mark of the present invention.

The printed registration mark of this embodiment consists of a circle 7 and a straight line 9.

The black areas in FIGS. 4 to 9 indicate the printing areas of each color. Figure 4 shows the colors used as a reference when registering, and shows the outline of the printed registration mark of the present invention as a solid line, and the areas equally divided into six printing colors are shown as solid lines. .
The printing register is adjusted by aligning each color shown in FIGS. 5 to 9 with a predetermined position of the printing registration mark printed in this reference color.

Note that the shape of the printed registration mark is not limited to the above embodiment, but may be a combination of polygons and straight lines, and the number of straight lines may be changed depending on the number of printing colors. Figures 10 to 1
Fig. 6 shows another example of the printed registration mark, Figs. 10 to 12 show the number of straight lines changed according to the number of printing colors from three to five, and Fig. Figures 1 to 16 are a combination of polygons and straight lines.

Next, the registration method will be explained with reference to the drawings.

A case will be described in which the print registration mark has the same shape as the print registration mark shown in FIG. 3, and the number of printing colors is three. FIG. 17 shows the state in which three colors 11, 13, and 15 are first printed, and the printed color 11 is shifted in the direction of arrow A in the figure with respect to the printed registration mark made by the reference color 15, and on the other hand, Print color 13 is shifted in the direction of arrow B in the figure. Therefore, in order to match the printing register, print color 11 is shifted in the direction of arrow A', and print color 13 is moved in the direction of arrow A'.
is printed while being shifted in the direction of arrow B', and the amount of deviation between the reference color 15 and each color is corrected.

As described above, when the printed registration mark of the present invention is used, the following effects are produced.

(1) Since the printing position for each color is different, even if it is a light color, the amount of deviation from the reference position can be easily observed without being obstructed by dark colors, and also inspection for color omission (colors that should be printed are not printed) You can also do it.

(2) Since each color is printed solid, the density can be managed using the solid area. Therefore, there is no need to use colored balls.

[Brief explanation of drawings]

FIG. 1 is a diagram showing a cross-shaped printed registration mark, FIG. 2 is a diagram showing a printed registration mark consisting of a rectangle and a cross used in form printing, and FIG. 3 is a diagram showing a printed registration mark of the present invention. figure,
4 to 9 are diagrams showing printing areas of each color in the case of multicolor printing, and FIGS. 10 to 16 are diagrams showing other embodiments of the printed registration mark of the present invention,
FIG. 17 is a diagram illustrating a printing registration method using the printing registration mark of the present invention shown in FIG. 3. 1...Cross-shaped printed registration mark, 3...Marginal punch hole, 5...Printed registration mark consisting of a rectangle and a cross, 15...Reference color.

Claims (1)

[Claims] 1. A registration mark for multicolor printing, in which when the registration marks corresponding to each color are superimposed, the positions away from the center form a circle or polygon, and the center of the circle or polygon is A printed registration mark comprising a plurality of straight lines extending radially through the circle or polygon. 2. A registration method for multicolor printing, in which when the registration marks corresponding to each color are superimposed, the positions away from the center form a circle or polygon, and they extend radially through the center of the circle or polygon. In addition, the outline of the registration mark, which is made up of a plurality of straight lines that pass through the circle or polygon, is printed in a printing color that serves as a reference for registration, and the registration is achieved by printing a solid color of each color in accordance with a predetermined position of the outline. A registration method characterized by matching.