JP2902310B2 - 3D printed matter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-dimensional print, and more particularly, to a process of photoengraving based on an original three-dimensional photograph taken in three-dimensional manner, in which an image is viewed with reflected light directly printed on the back of a lenticular lens. Related to three-dimensional printed matter.

[0002]

2. Description of the Related Art Conventionally, there are three-dimensional prints viewed with transmitted light and those viewed with reflected light, such as ordinary prints such as emblems, stickers, and advertisement prints. It is widely known that a pattern sheet serving as a base of a three-dimensional image is printed by a photoengraving technique on the basis of a three-dimensional photographed original image, and the pattern sheet is bonded to a lenticular lens.

[0003] The three-dimensional printed matter viewed with the reflected light described above is a two-dimensional image printed on a lenticular lens by observing a pattern sheet serving as a base material of a three-dimensional image with the left and right eyes through a linear lens of the lenticular lens. Is reflected on the retina, and the brain judges it through the optic nerve and recognizes it as a three-dimensional image.Therefore, the image that can form an image with the left and right eyes is printed on the design sheet with a fine lenticular lens. They are arranged linearly at the same interval as the linear lenses.

[0004] Further, since the above-mentioned design sheet is printed by printing of each color created by a photoengraving technique based on a three-dimensional original image of a pattern or a photograph, the surface of these printing plates is printed. A large number of halftone dots are provided for converting the shading of an image into small and large dots. In a normal flat printed matter, the screen ruling indicating the number of halftone dots is eight.
On the other hand, in the case of a three-dimensional print, an image capable of forming an image with the left and right eyes is sharp unless it is linearly arranged at the same interval as a fine linear lens of a lenticular lens. Since a fine image is not formed, a screen having a line density of about 300 lines is required.

Further, as a printing method of the pattern sheet in the three-dimensional printed matter, among letterpress, planographic (offset), and intaglio (gravure), letterpress printing has a screen ruling of 15 lines.
Since the number of lines is about 0 to 175 lines, it is not suitable for printing a three-dimensional print requiring a fine density of about 300 lines as the number of screen lines, and the gravure printing has about 175 lines of screen lines. At the same time, since the density is expressed by changing the amount of ink according to the difference in the depth of the depression on the plate surface of the printing plate, the thickness of the ink differs depending on the density, and similarly, 300
It is said that it is impossible to print a three-dimensional printed matter that requires a line density as small as a line. After all, printing of a three-dimensional printed matter at present is based on an offset printing method that can have a screen line number of about 300 lines.

[0006]

As described above, the printing of the symbol sheet in the related art is usually performed by offset printing. However, in offset printing, ink is attached to a flat plate-shaped print, so that three-dimensional printing is performed. In the case of printing with fine dots of about 300 lines, such as printed matter, the amount of ink attached is small. Therefore, in order to print a pattern sheet to be bonded to a lenticular lens, it is necessary to perform overprinting with a printing plate of each color. There is a problem that the production efficiency must not be improved because it must be performed repeatedly.

In a conventional three-dimensional print, a pattern sheet serving as a base for a three-dimensional image is printed on paper based on a three-dimensional photograph original image, and the pattern sheet printed on the paper is used as a lenticular lens. Because it is to be pasted, the number of production steps must be increased, and the production efficiency is low. The problem is that a thin product cannot be obtained.

[0008]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-described problems in the conventional three-dimensional printed matter, and to obtain a base of a three-dimensional image obtained by a photoengraving technique based on an original three-dimensional photograph. It is an object of the present invention to enable a thin three-dimensional printed matter to be efficiently manufactured by directly printing a design sheet to be printed on the back surface of a lenticular lens without printing it on paper.

[0009] The present invention, as a specific means for that,
A high screen ruling in which the average distribution of minute dots of the same size is randomly changed according to the density value by FM (Frequency Modulation) screening means as a step of color-separating a stereoscopic original photographed stereoscopically by a scanner. A dot image plate of each color corresponding to the above was made, a letterpress printing plate was created with these dot image plates, and a pattern which was a base of a three-dimensional image was directly printed on the back surface of the lenticular lens using the letterpress plate. It is characterized by.

[0010]

In the three-dimensional printed matter of the present invention, in the step of printing a pattern as a base of a three-dimensional image viewed through a lenticular lens, a three-dimensional photographed original image is subjected to color separation processing by a scanner and then subjected to FM (frequency Modulation) By means known as screening, a dot image plate of each color corresponding to a high screen ruling is created by randomly changing the average distribution of minute dots of the same size according to the density value. Since the letterpress printing plate is created by the printing plate, the letterpress printing plate obtained has a collection amount of fine dots corresponding to about 300 lines, which was conventionally only applicable to a flat printing plate for offset printing. It can be a printing plate.

As a result, the amount of collection of fine dots corresponding to about 300 lines, which was conventionally applicable only to a flat plate for offset printing, is provided on a relief printing plate to which a relatively large amount of ink can be attached. Using this letterpress plate, it is possible to print a pattern as a base of a three-dimensional image directly on the back side of the lenticular lens, and without having to overprint each color plate many times. A three-dimensional print can be produced very efficiently in a single printing process.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a flow chart showing a process of manufacturing a three-dimensional printed matter of the present invention. Based on the principle, a three-dimensional photograph original image 1 corresponding to a color original in normal photoengraving is created.

After the stereoscopic original image 1 is subjected to color separation processing by the color scanner 2, the FM (frequency
Modulation) Screened by the screening device 3, as shown in FIG. 2, yellow, red, blue, corresponding to a high screen ruling, in which the average distribution of minute dots 4 of the same size is randomly changed according to the density value. A dot image plate 5 for each black color is created.

Each of the dot image plates 5 forms a printing plate 6 to be described later based on the dot image plates 5 of respective colors, and a three-dimensional image to be viewed through these lenticular lenses 8 by these prints 6. This is for printing a pattern 7 serving as a base material of. As shown in FIG. 3, the finally obtained design 7 has a large number of linear designs 7 having a width corresponding to each lens interval of the lenticular lens 8.
a and 7b.

In the case of the dot image plate 5 described above, in the conventional screening, the density is expressed by a change in the size of halftone dots arranged at equal intervals. The dot image plate 5 processed by the FM screening is a set of randomly arranged microscopic dots in units of microns corresponding to the size of 2 to 3% of halftone dots in the case of 175 lines according to the conventional screen ruling. By controlling the average distance between these dots and distributing them, the density value is changed, and the tone and color state of the original photo original are reproduced as an image up to a fine portion.

When the amount of aggregation of such minute dots is visually grasped, in both the highlight and shadow portions, a low screen ruling is observed, and in the halftone and detail portions, high screen rulings are observed. The equivalent of a number is seen. Where you need more detailed information,
It has photographic reproducibility and expressive power such that finer screen rulings can be seen.

As described above, when the dot image plates 5 for each color are obtained by the FM screening apparatus 3, the letterpress printing plates 6 for each color are prepared based on these image plates 5. Using the letterpress printing plate 6, a pattern 7 serving as a base of the three-dimensional image is directly printed on the back surface of the lenticular lens 8 by a rotary letterpress printing press, and the final part of the printing process in this printing press is performed. Then, the backing ink 9 is applied to the back surface of the symbol 7 to complete all the printing processing steps.

[0018]

As described above, according to the present invention, after a stereoscopic original image is subjected to color separation processing by a scanner, a high-screen in which the average distribution of minute dots of the same size is randomly changed according to the density value by FM screening. A dot image plate of each color corresponding to the number of lines is created, and a letterpress printing plate is created by using these dot image plates. A large amount of ink can be used compared to the case of offset printing, and therefore, a large amount of ink can be used. In the printing process, a pattern that is the basis of a three-dimensional image can be faithfully printed with high efficiency.

Therefore, according to the present invention, the pattern which is the base of the finally obtained three-dimensional image can be directly printed on the back surface of the lenticular lens. After the pattern sheet is printed on the lenticular lens, the process of attaching the pattern sheet to the lenticular lens can be eliminated, so that the three-dimensional printed matter can be printed very efficiently.

Further, since a pattern serving as a base of a three-dimensional image can be directly printed on the back surface of the lenticular lens, a three-dimensional printed material having a small thickness as a whole can eliminate the thickness of paper as a conventional pattern sheet. Has the advantage that the utilization of this type of product can be further expanded.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a manufacturing process of a three-dimensional print according to the present invention.

FIG. 2 is a partially enlarged view of a dot image plate obtained by FM screening.

FIG. 3 is a sectional view of a three-dimensional print obtained by the present invention.

[Explanation of symbols]

1: Original 3D photograph 2: Color scanner 3: FM screening device 4: Dot 5: Dot image plate 6: Plate for letterpress 7: Pattern as base material for 3D image 8: Lenticular lens 9: Backing ink

Claims (1)

(57) [Claims] 1. A step of color-separating a stereoscopic original image photographed stereoscopically by a scanner, wherein an average distribution of minute dots of the same size is randomly changed by a density value by an FM (Frequency Modulation) screening means. A dot image plate of each color corresponding to the high screen ruling, a letterpress printing plate is created from these dot image plates, and a pattern serving as a base of a three-dimensional image is formed on the back surface of the lenticular lens by the letterpress plate. Three-dimensional printed matter obtained by directly printing on