JP2019186811A - Pattern printing method - Google Patents

Abstract

To provide a pattern printing method in which a burden of creation work of a pattern is not increased, and designability is not impaired by forming a different pattern over an entire surface.SOLUTION: A pattern printing method comprises: a step of forming digital image data of an original industrial design; a repeating process step of repeating a connection of the digital image data of the original industrial design, and adding a pattern to be formed over the adjacent digital image data of the original industrial design; a step of removing the pattern selected to the digital image data of an entire decorative sheet obtained by the repeating process step; a step of setting each pattern incidence rate to each pattern to be removed in the removing step; a step A of forming the digital image data of the entire decorative sheet on the basis of the set pattern incidence rate; and printing step of printing the pattern of the decorative sheet to a printed material by a plate-less printing by using the digital image data of the entire decorative sheet formed in the step A.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a pattern printing method for a decorative sheet.

  A decorative sheet is a printed material such as paper or a resin sheet printed with a pattern such as wood grain. It is applied to wallpaper on the inner wall of a building or the surface of indoor doors or furniture to enhance the design. Used as a material.

  The decorative sheet is usually produced in the form of a long band and is provided in a form wound in a roll. When such a long strip-shaped decorative sheet is manufactured by plate printing, the same pattern is repeatedly formed in the vertical and horizontal directions, and is joined so that the joint is not visible. Therefore, it cannot be said that the design is excellent because the same pattern is repeatedly used. For example, as shown in FIG. 3A, it can be seen that the patterns A ′, B ′, C ′, D ′, and E ′ are repeatedly formed in the downward direction of the drawing. The other patterns are all the same. F ′ is the background. FIG. 3B is a diagram obtained by removing the mark ◯ from FIG.

  As a method of solving such a problem of designability, using plateless printing such as ink jet printing, forming different patterns over the entire length of the roll-shaped longitudinal direction and the direction orthogonal to the direction. Can be considered. However, in order to form the entire surface as different patterns, it is necessary to create a large amount of print data, and there is a problem that it takes a long time to create.

  Therefore, there has been a long-awaited pattern printing method for a decorative sheet that can form a different pattern on the entire surface of the decorative sheet without significantly increasing the work time compared to the case where the same pattern is repeatedly produced using plate printing. .

  As a technique similar to such a technique, for example, a print pattern raising system disclosed in Patent Document 1 can be cited. This technique reduces the amount of data handled in creating a picture to be printed (print pattern raising), and enables a print pattern raising with a natural texture efficiently.

  Specifically, a means for displaying a plurality of pattern shapes, a means displayed by the pattern shape display means, and a pattern shape selected by an operator's instruction on the printed surface, and a pattern determined by the distributed pattern shapes. Means for displaying the distribution of the texture assigned to each of the pattern areas on the printing surface according to the operator's instruction, means for assigning each texture to each pattern area by the distribution by the means for displaying, and a partial texture from the texture pattern of the assigned texture And a print pattern raising system provided with means for cutting out data in the shape of the corresponding pattern area.

  This print pattern raising system is an excellent technique that enables pattern raising of a decorative sheet made of different patterns over the entire surface of the decorative sheet, rather than repeating simple patterns.

  However, many steps are required to create a pattern that is not a simple pattern repetition. For example, it is necessary for the operator to select a pattern shape and distribute the pattern shape to the printing surface or to distribute the texture to be assigned to each of the pattern areas on the printing surface determined by the distributed pattern shape. is there.

Therefore, there is a problem that the amount of work increases compared to the conventional work required for creating a decorative sheet pattern made up of repetitions of the same pattern. This technique is a decorative pattern printing system for a decorative sheet, and is different from the technique for printing a decorative sheet pattern.

JP 2005-341434 A

  In view of the above circumstances, the present invention provides a pattern printing method that does not impair the design by forming a different pattern over the entire surface without significantly increasing the burden of creating a pattern. Let it be an issue.

As means for solving the above-mentioned problems, the invention according to claim 1 of the present invention is a pattern printing method for a decorative sheet for printing different patterns over the entire surface of a substrate to be printed,
Creating digital image data of an original design from digital image data comprising a decorative sheet background and a plurality of patterns;
Create digital image data for the entire surface of the decorative sheet by adding a pattern that extends across the digital image data of the adjacent original design, after repeatedly connecting the digital image data of the original design at least in the longitudinal direction of the decorative sheet Repeat processing step to
For the digital image data of the entire decorative sheet obtained in the repeat processing step, a deletion step of selecting a pattern in the digital image data of each original design and deleting it,
A step of setting a pattern appearance rate for each position where there was each pattern deleted in the deletion step,
Based on the set pattern appearance rate, step A for creating digital image data of the entire decorative sheet;
A pattern printing method comprising: a printing step of printing a pattern of a decorative sheet on a substrate to be printed by plateless printing using digital image data of the entire surface of the decorative sheet created in step A It is.

  The invention described in claim 2 is the pattern printing method according to claim 1, wherein the plateless printing is ink jet printing.

  According to the decorative sheet pattern printing method of the present invention, first, digital image data of an original design including background data and a plurality of pattern data is used, and the digital image data of the entire decorative sheet is created by connecting them. To do. Thereafter, a pattern to be deleted is determined and deleted from among a plurality of pattern data of each original design. Thereafter, each pattern appearance rate at the position of each deleted pattern is set. The pattern printing method of the decorative sheet of the present invention is a pattern printing method for performing plateless printing using digital image data on the entire surface of the decorative sheet created in accordance with the pattern appearance rate, and therefore differs over the entire surface of the decorative sheet. A pattern can be formed. Therefore, it has a natural texture and does not impair the design.

  Also, the unit pixel created from the digital image data obtained by deleting the selected pattern from the digital image data of one original design, and the pattern appearance rate data corresponding to the position data of the deleted pattern. Since the digital image data of the entire face of the decorative sheet is created by connecting the two, the amount of digital image data to be handled does not become enormous.

  In addition, compared with the case where the digital image data of the entire decorative sheet is created by simply connecting the digital image data of the original design, the burden of creating the digital image data of the pattern is not significantly increased.

Explanatory drawing explaining the pattern printing method of the decorative sheet of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which illustrates the pattern of the decorative sheet by the decorative sheet pattern printing method of this invention, Comprising: (a) is the longitudinal direction (up-down direction) of a decorative sheet, and the decorative sheet by which the same pattern 4 was formed repeatedly. It is the figure which gave (circle) mark to five characteristics AE, (b) is the figure which removed (circle) mark from (a). It is explanatory drawing which illustrates the pattern of the decorative sheet by the conventional decorative sheet pattern printing method, (a) is 5 of the decorative sheet in which four same patterns were repeatedly formed in the longitudinal direction (vertical direction) of the decorative sheet. It is the figure which gave (circle) mark to one characteristic AE, (b) is the figure which remove | eliminated (circle) mark from (a).

The decorative sheet pattern printing method of the present invention will be described with reference to FIGS.
The decorative sheet pattern printing method of the present invention is a decorative sheet pattern printing method for printing different patterns over the entire surface of a substrate to be printed.

  The decorative sheet pattern printing method of the present invention includes a step of creating digital image data of an original design from digital image data provided with a background of the decorative sheet and a plurality of patterns, and at least in the longitudinal direction of the decorative sheet. By repeating the digital image data of the design and adding the pattern to be formed across the digital image data of the adjacent original design, the repeat processing step to create the digital image data of the entire decorative sheet, and the repeat processing step For the digital image data of the entire decorative sheet obtained, select the pattern from the digital image data of each original design, delete process to delete, and for each pattern deleted in the delete process, respectively Based on the process of setting the pattern appearance rate and the set pattern appearance rate, And a printing process for printing the image of the decorative sheet on the substrate to be printed by plate-free printing using the digital image data of the entire decorative sheet created in the process A. It is a feature.

(Create digital image data of original design)
This is a step of creating digital image data of an original design from digital image data including a background of a decorative sheet and a plurality of patterns. As illustrated on the right side of the column of the digital image data creation process of the original design in FIG. 1, the digital image data of the background F, which is a component of the design of the decorative sheet, and the patterns A to E shown by ◯ The digital image data of the original design is created by combining the digital image data of the pattern including the pattern other than.

(Repeat processing process)
This is a step of creating digital image data corresponding to the entire surface of the decorative sheet by connecting the digital image data of the original design as a unit image of the image data, for example, in the longitudinal direction of the decorative sheet. Further, as illustrated in the right column of the repeat processing step in FIG. 1, a pattern a and a pattern b obtained by dividing one pattern straddling between unit images of adjacent image data are added. A plurality of patterns may be added. It is also desirable to perform a process of making the joints invisible. These treatments can create a natural texture. In addition, by making the background plain, it is possible to omit the process of making the joints invisible.

(Deleting process of selected pattern)
The digital image data of the patterns A to E in all the unit images as illustrated in the right column of the deletion process of the selected pattern in FIG. Is deleted. Further, the positions (coordinates) where the patterns A to E are present in the unit images of the patterns A to E are stored. By doing in this way, the pattern appearance rate with respect to those positions can be linked. By setting the position of each pattern and the pattern appearance rate as a set, a value in which the pattern appearance rate at the position of each pattern is set in advance can be realized on the entire surface of the decorative sheet.

  Here, the pattern appearance rate is a ratio (%) at which the pattern appears at the position where each pattern A to E in each unit image is present on the entire surface of the decorative sheet. For example, when there are 100 positions where the pattern A is present on the entire decorative sheet, the appearance rate of 50% of the pattern A means that the pattern A is printed at 50 positions. Further, the pattern printed at the position where the pattern A was present may not be the pattern A. Any pattern may be used as long as a natural texture is created.

(Pattern appearance rate setting process)
The appearance rate (pattern appearance rate) of the patterns A to E at the positions where the patterns A to E of the unit images corresponding to the entire decorative sheet are located is set. By setting each pattern as a different pattern appearance rate, it is possible to obtain a natural texture pattern, but even if not all patterns have different pattern appearance rates, the same pattern appearance rate can be used as long as the design does not deteriorate. It does not matter if there is a pattern.

  The pattern appearance rate of the pattern A at the position where the pattern A exists is 50%, as shown in the table illustrated in the right column of the pattern appearance rate setting step in FIG. The pattern appearance rate of the pattern B at the position where the pattern C was 20%, the pattern appearance rate of the pattern C at the position where the pattern C was 0%, the pattern appearance rate of the pattern D at the position where the pattern D was 80%, The case where the pattern appearance rate of the pattern E at the position where E exists is set to 100% is shown. The pattern appearance rate may be an arbitrary probability of 0% to 100%. However, if all the patterns appear at 0% or all at 100%, a natural texture cannot be produced. It is desirable to set a random pattern appearance rate that can create a natural texture.

(Process for creating digital image data on the entire decorative sheet)
Digital image data of the entire decorative sheet on which the patterns A to E are formed based on the set pattern appearance rate at the positions where the patterns A to E exist in the unit images connected over the entire decorative sheet. To create and store digital image data of the entire decorative sheet. In the calculation process, the appearance method of the patterns A to E in each unit image may be determined according to a predetermined rule. In order to create a more natural texture, a random function is used to determine which unit image is to be formed (or printed) and which unit image is not to be formed in order to satisfy a predetermined pattern appearance rate. It is desirable to use and decide.

(Printing process)
Plateless printing is performed using the digital image data of the entire decorative sheet obtained in the process of creating the digital image data of the entire decorative sheet. As plateless printing, for example, ink jet printing can be preferably used, but it is not necessary to limit to this. For example, an electrophotographic recording method or a laser recording method can be used.

FIG. 2 shows an example of a decorative sheet pattern printed using the decorative sheet pattern printing method of the present invention. FIG. 2A illustrates a part of a decorative sheet on which four unit images are formed from the top to the bottom of the drawing. In the figure, the pattern A is formed in three of the positions of the four patterns A, and is not formed in one. About the position of the pattern B, the pattern B is formed in three of four. Regarding the position of the pattern C, the pattern C is formed in three out of four. About the position of the pattern D, the pattern D is formed in two of four. About the position of the pattern E, the pattern E is formed in three of four. F is the background.

  These pattern appearance rates are different from the pattern appearance rates set in these four unit images, but the pattern appearance rates over the entire decorative sheet coincide with the appearance rates set in the pattern appearance rate setting step. Similarly, each pattern AE is formed.

A, A ', B, B', C, C ', D, D', E, E '... Pattern F, F' ... Background (background)
a, b... pattern formed across adjacent unit images

Claims (2)

A pattern printing method of a decorative sheet for printing different patterns over the entire surface of a substrate to be printed,
Creating digital image data of an original design from digital image data comprising a decorative sheet background and a plurality of patterns;
Create digital image data for the entire face of the decorative sheet by repeatedly connecting digital image data of the original design at least in the longitudinal direction of the decorative sheet, and then adding a pattern that extends across the digital image data of the adjacent original design Repeat processing step to
For the digital image data of the entire decorative sheet obtained in the repeat processing step, a deletion step of selecting a pattern in the digital image data of each original design and deleting it,
A step of setting a pattern appearance rate for each position where there was each pattern deleted in the deletion step,
Based on the set pattern appearance rate, step A for creating digital image data of the entire decorative sheet;
A pattern printing method comprising: a printing step of printing a pattern of a decorative sheet on a substrate to be printed by plateless printing using digital image data of the entire surface of the decorative sheet created in step A .   The pattern printing method according to claim 1, wherein the plateless printing is inkjet printing.