JPH0419181A - Variable color printed matter and production thereof - Google Patents

Abstract

PURPOSE: To give a multicolor print for easily changing a color by a visual angle by conducting a repetitive change of optical characteristics in an area of a figured medium having a line pattern oriented in a plurality of different directions in a section form area, and changing the color synchronously with it. CONSTITUTION: A part 10 of a print having a changing color has a cloud 12 partly specified by sectional forms 14, 16, 18, 20, and the respective sectional form areas have lines oriented differently. These lines are established by grooves 22, 24, 26, and the grooves are formed by embossing a foil 29 on a base layer 27 by thermal transferring. Repetitive colors 28 are printed by aligning synchronously with the grooves on the foil 29, and include a yellow fringe 30, a magenta fringe 32 and a cyan fringe 32. The groove 24 reflects a magenta light emitted by a ray 46, sensed by a visual angle of an observer 40, and the cyan color emitted from the fringe 30 illuminated by the ray 46 is not sensed. However, when the observer 40 is moved to a position of an observer 42, the cyan color is sensed at the visual angle. A different visual angle is performed by transferring a light source to a position of a light source 50.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a variable color printed matter and a method for manufacturing the same, and more particularly, the present invention relates to a variable color printed matter and a method for manufacturing the same, and more particularly, to a variable color printed matter and a method for manufacturing the same, and more particularly, a variable color printed matter and a method for manufacturing the same. , each region of which has an optical change that selectively prevents the viewing of one or more colors at different viewing angles.

(Prior Art) A hologram is known as a device that presents different shapes or different visual angles of shapes depending on the viewing angle.

Holography utilizes diffraction to split white light into its spectral components; a diffraction grating with 20,000 to 50,000 lines per inch reflects or transmits different components of the incident light spectrum.

Although this component is seen as a colored visual representation that changes as the angle of incident light changes, the manufacturing process for the diffraction grating requires a high degree of precision and is expensive.

As an alternative to the use of diffraction principles, certain objects can be obtained with embossed foils with much fewer lines per inch configured to reflect white light as lines of light and shadow.

This reflected line appears to move as vision changes, but it does not result in a change in color.

Other embossed objects are printed in different colors. The way the printed pigments are combined with the embossed lines can create moiré (wavy) patterns that interfere with the intended features. In some printing applications, this undesirable moiré pattern must be overcome by printing in dots of different colors with a periodicity different from that of the embossed pattern.

Still other objects utilize lenticular structures in combination with color pigments. Lenticular films have a large number of small semi-cylindrical lenses (known as lenticules), which are typically made as parallel elongated ridges embossed on the bottom of the film.

The lenticules extend parallel to the front surface of the film and change the way the underlying emulsion (coating) is exposed by the subject matter and intervening color filters. Lenticular films are often used to create stereoscopic visual effects that display left and right images as the viewing angle changes. Lenticular printing can similarly be produced by printing techniques using halftone dots. However, the individual regions of the feature are not oriented in different directions so that a color change occurs depending on the viewing angle.

PROBLEM TO BE SOLVED The present invention aims to provide an improved multicolor print that includes several contrasting areas that easily change color with viewing angle.

It is further an object of the present invention that such variable color printing can be produced by standard tolerance printing.

Another object of the invention is to provide a variable color print that has a different appearance than existing prints.

It is also an object of the present invention to provide a print with varying color that is not expensive to manufacture.

Yet another object of the present invention is to provide an improved method of forming prints with such varying chromatic colors.

(Technical Means and Effects thereof) The present invention constructs a print in which a shape that pleases the eye and arouses curiosity through changing colors has repeated changes in optical properties such as changes in translucency or reflection angle. This is due to the fact that what could be achieved by doing so has been realized.

This iterative variation is generally parallel within each of the multiple segmented features, and the segmented features are oriented in different directions. Additionally, the printing includes repetitive color changes that are generally co-aligned with repetitive light changes within each region, thereby making one or more colors selectively visible at different viewing angles. and one or more of the remaining colors are revealed, causing a color change in the visual image.

The present invention comprises a shaped medium having a plurality of differently oriented line patterns in segmented shaped regions, within which multiple repetitive changes in optical properties occur across the essential orientation direction of the line patterns. The colors repeat in parallel in the direction, and the colors aligned in the same alignment also change repeatedly.

This repeated change in light causes color changes in the viewed feature in response to changes in viewing angle by selectively preventing the viewing of one or more color changes in different visions.

In this case, the segmented figural areas are oriented in relation to each other such that, for each viewing angle, at least two different colors can be seen for the feature, one in each of the different segmented figural areas. I can do it.

The repeated changes in light allow us to see the other two colors by preventing us from seeing these two different colors with different vision. Therefore, the repeated changes in light referred to here include repeated changes in the translucency of the shaped medium, such as a plurality of opaque lines.

The above-mentioned repeated change in color can be expressed by arranging opaque lines and spaces in a direction perpendicular to the direction in which the change is repeated, that is, in an up-down direction (in the thickness direction of the medium). In this case, the opaque line may be provided on the first surface of the figural medium and the repeating color change may be provided on the second surface of the translucent or transparent figural medium.

The repetitive change of light includes a repetitive change using a reflection angle formed in a shaped medium including a reflective material. In this case, the reflective material can be arranged in the base layer that constitutes the shaping medium.

The iterative variations described above include orienting the shaped medium with sinusoidal undulations or grooves formed on the reflective surface.

Further, a layer having a repetitive change in color and a layer having a repetitive change in a reflection angle, which constitute the figurative medium, may be arranged at intervals in the thickness direction of the medium.

Each segmented feature area includes at least 65 or more optical changes per inch, preferably 100 to 400 optical changes per inch. As a result, different segmented feature areas form different feature densities.

The present invention further includes designating different feature regions, selecting line patterns for each region, and forming a feature pattern mask with line patterns oriented in different directions for each individual region. It is characterized by a method of forming a color print of the image.

The method further includes transferring the patterned mask to the patterned medium and forming multiple color features from the patterned mask, one color feature for each color selected for printing. Each selected color is transferred to the figurative medium such that the colors are generally synchronously aligned with the line pattern described above.By thus arranging, one or more colors are visible at different viewing angles. This selectively obstructs this, and causes the color of the image seen to change as the viewing angle changes.

In this case, the transfer can be performed by creating a die from a patterned mask and applying pressure from the die to the shaping medium, such as by thermal transfer embossing.

Further, by configuring the pattern medium as a semi-transparent body and placing the pattern mask of the transferred pattern on the semi-transparent pattern medium, the transparency of the pattern medium can be selectively changed.

The formation of a plurality of color features is accomplished by producing printing plates of each color to reproduce each color feature and by selecting different densities at which each color is to be printed for different feature areas.

Different feature regions are constructed by specifying different feature densities, selecting line patterns for each density, and determining pattern masks with line patterns oriented in different directions for each intensity region. You can.

The invention can be accomplished by printing with variable color, each having multiple areas oriented in different directions with repeating changes in light.

Each segment includes repeating changes in color that are generally synchronously aligned with the repeating changes in light. This repeated change in light selectively prevents one or more colors from being seen at different viewing angles.

In one arrangement, the repeating changes in light are created by repeating changes in the angle of reflection, like grooves in a reflective foil. In another arrangement, the repeating changes in light are formed by repeating changes in translucency, such as multiple opaque lines combined with a transparent base layer.

The present invention also includes a method of forming such a print with varying vine colors. Different figurative areas are designated,
A line pattern is selected for each region. A pattern mask is defined to have line patterns oriented in different directions for each individual region. This pattern mask is transferred to the patterned medium, such as by raising a die from the patterned mask and applying pressure to the patterned medium with the die.

In another method, a patterned mask, either by itself or by a printing process, is placed over a translucent shaped medium to selectively change the translucency of the shaped medium.

In all configurations, a color mask is formed from a pattern mask, in which selected colors are printed on the figurative medium, thereby selectively blocking the viewing of one or more colors at different viewing angles and changing the viewing angle. This will cause a change in the appearance seen in response to the change.

(Example) Next, a specific example of the above technical means will be explained with reference to the drawings.

A part of printing with changing color according to the present invention is (10)
are shown in Figure IA as segmented figures (14) (16
) (18) (20) The cloud (1
2). Each segmented feature area has a different orientation of lines. These lines are defined in this arrangement by parallel grooves such as grooves (22) (24) (26) shown in enlarged view IB.

The grooves (22), (24), and (26) are formed in the base layer (27) by a method such as embossing the foil (29) on the base layer by thermal transfer.

A repeating color (28) is printed onto the foil (29) in generally co-ordinated alignment with the grooves (22) (24) (26). These grooves, due to the reflective foil (29), serve as a repeating change in reflectivity that selectively hides and reveals colors (28) as the viewing angle changes.

In this configuration, the repeating color (28) is a yellow stripe (
30), magenta stripes (32) and cyan stripes (34). Other colors, including black and white, can be substituted for or added to the colors described above.

The effect of the scales on changing the viewing angle is that the observer's position (40)
(42). The groove (24) is connected to the light beam (44
) and is perceived by the observer (40).

The cyan color emanating from the stripe (30) illuminated by the light beam (46) is reflected at different angles and is not perceived by the observer (40). However, the viewing angle is different from that of the observer (40
) moves to the position of the observer (42), the transition causes cyan to be perceived instead of magenta.

Different viewing angles can also be achieved by shifting the light source to the position of the light source (50). At this viewing angle, the observer (42) perceives yellow most strongly of all colors (28).

Seeing a color involves perceiving that color in one figurative field, even though other colors are also visible.

Changes in viewing angle, such as changes in illumination or viewing angle, can result in grooves (
22) (24) results in a color change that is perceived as being emitted by (26). At one viewing angle, regions (14) and (20) appear primarily yellow, region (16) primarily cyan, and region (18) primarily magenta (see Figure IA).

Depending on the printed color stripe, larger or smaller amounts of silver foil (29) may be visible, as described below.

One technique for forming prints with varying colors according to the present invention is to use a first mask to define repetitive changes in light, and then to print several color masks from this first mask. The idea is to determine one for each color that should be used.

Area (14) (16) (18) (
The different segmented feature areas such as 20) can be formed by a hand mask method or a negative-positive photographic mask method.

The different segmented feature regions can constitute different feature densities in different areas within the feature.

A simplified figure with three densities is shown in FIG. There, the figure (60) is determined by the density of the highlights (
62), midtone density (64), and shadow density (66).

A mask for highlight density (62) is created in the following two steps. That is, the negative transparency film (68) is first exposed so that the highlight density areas (62) appear as opaque in the areas (70), while the midtone and shadow areas (64)
(86) appears transparent in area (72). A positive transparency film (74) of FIG. 3B is then made from a negative transparency film (68) so that areas (70) appear transparent and areas (72) appear opaque. A ready-made rule or grid is then selected and placed between the positive transparency film (74) and the film to be exposed.

Once exposed by contact copying, this film
It takes on this pattern in areas (70) as a negative transparent film, while areas (72) remain opaque. The negative transparency film of area (70) is combined with the other two masks to create the composite mask (84) of FIG.

Masks for areas of halftone density (64) and areas of shadow density (66) are formed as follows.

A second film is exposed for a long period of time to the feature (60), such that the negative transparency film ( 76). The positive transparent film (82) of Figure 3D is then made from the negative transparent film (76).

The area of halftone density (64) is covered with a negative transparent film (68
) and a positive transparent film (82), such that the dark areas (70) and (80) mask the highlight density area (62) and the shadow density area (66), respectively. Make it.

A negative transparency film (76) is used as a mask for areas of shadow density (66). These three color masks are then combined to create different line patterns (8
6) The composite mask (8) of Fig. 4 with (88) and (90)
4) Form. The angle at which the ruled lines are oriented is selected to contrast and create a visually appealing feature.

In this composition, the lines of pattern (86) extend at 135 degrees from the bottom of the area 1, the lines of pattern (88) extend at 90 degrees, and the lines of pattern (90) extend at 45 degrees. . The lines occupy approximately 80% of each area, leaving 20% as a transparent margin.

Lines should be drawn at 1 per inch to give a visually pleasing appearance.
00 to 400. separated by a line ratio. Preferably, the number of lines is at least 65 lines per inch. Providing less than about 65 lines per inch results in the perception of individual grooves or color streaks rather than the color of the entire area.

A composite mask (84) is placed on top of the gouey coated with a photosensitive resist that hardens upon exposure to light.

After exposure, the mask (84) is removed, the guide (92) is cleaned and the pattern (86) etched into the guide (92) is removed.
) (88) represents (90).

If the photoresist is photocurable, the gui (92) will show a positive image of the negative mask (84), and the base layer will be the gui (92).
The pattern of the negative mask (84) will be replicated onto the base layer when it is engraved. If the photoresist is photosoftenable, a positive pattern will be transferred to the base layer.

To create the variable color printed reflective composition of Figures IA-IB, a master die (92) is used for prefabricated thermal foil transfer embossing. In this, a reflective foil is transferred onto a substrate, such as paper, at the same time as the paper is embossed. Alternatives are discussed below in connection with the description of FIGS. 7-9.

After the paper is embossed, different colors are printed separately on the paper using color plates made from the embossing mask (84).

A density of 80% lines to 20% margins in patterns (86), (88), and (90) can be used to generate a color image for each color as reproduced by a printing plate of this color. Each color plate is printed with variable color in Figure IA (1
In each area of 0), print 20% color and 80% margin. Alternatively, by varying the proportion of the black lines in the pattern, different color biases can be applied to different areas. In either case, the precise alignment of each color plate during printing is not important, especially if the segmented feature area includes lines extending in a number of different directions. This printing could be accomplished within traditional tolerances using off-the-shelf offset printing or letterpress.

More complex synthetic embossing mask positive print (98
) is shown in FIG. 6A, and a part thereof is schematically shown in FIG. 6B. The print (98) is enlarged to approximately four times the actual size of the embossing mask.

The unicorn (100) shown in FIG. 6B has an area (1
02) (104) (106) (108) (110)
(112), (114) and (106). The patterns within each segmented graphical region are generally oriented in the direction pointed by the respective arrow within these regions.

Each segmented figurative area (102) (104) (10
6) The patterns (10B (110), (112) (114) and (106) are selected from ready-made grids and angled to emphasize the details of the figure and give it a more pleasing appearance to the eye. There is.

Although the variable color printing described above has repeating changes on the reflective foil and the colors are printed directly onto this foil, this is not a limitation of the invention.

The repeated changes in light, as shown in Figures 7 to 9,
It can be constructed using several different constructs. The segmented graphical area (121) of FIG. 7 is an example of multiple segmented graphical areas oriented in different directions of the variable color printing (120) according to the present invention.

The varying color printing (120) is comprised of a transparent base layer (122) with grooves (124) embossed on one side, and repeating color changes (126) are formed on the base layer (122).
printed on the second side.

By changing the translucency of the grooves (124>), different colors are perceived at different viewing angles.

The groove (124) may also include a reflective material (12B) shown in dotted lines. This reflective material reflects light transmitted from the upper base layer (122) rather than altering light transmission from below.

The segmented feature area (121m) of the variable vine color print (120a) of Figure 8 achieves a similar result by using repeating opaque lines on the top surface of the transparent substrate (122m).

The opaque line selectively blocks the remaining portions of the illumination light, such as rays (132) and (134), and transmits the remaining rays, such as ray (136).

Since the light ray (136) passes through the magenta color stripe (32a), the yellow stripe (30m) and the cyan stripe (34m) are
Rays (132) (134) will be blocked by ray (130) and will not be perceived.

The line (130) is approximately 8 m above the top surface of the transparent base layer (122m).
occupies 0% and leaves about 20% as a margin. When the viewing angle changes, for example by changing the illumination angle as indicated by the dotted arrow (140), the color yellow is primarily perceived rather than magenta or cyan.

The variable color printing (120b) of FIG. 9 uses transparent substrates (150) and (152) to define segmented feature areas. The opaque line (130b) is on the top surface of the base layer (150), and the interference line (154) is between the base layers (150) and (152) and is aligned with the blank space between the line (130b). I am made to do so.

The repeated changes in color (30b) (32b) (34b) are
It is placed on the lower surface of the second base layer (152). but,
In one other construction, additional opaque lines are present in the base layer (15
2) Color stripes (30b) (32b) (34
b) is given in the margin.

Although individual features of the invention are shown in some figures and not in others, this is done only for convenience, and each feature may be shown in whole or in part in other features in accordance with the invention. Can be combined with

[Brief explanation of the drawing]

The drawings are for illustrating a specific example of the above-mentioned technical means, and FIG. 1A is a schematic enlarged partial view of a printed cirrus cloud, and FIG. 1B is a schematic enlarged partial view of a printed cirrus cloud.
is an enlarged cross-sectional view of the line B--B in Figure 1A, Figure 2 is a schematic diagram of a figure with three different angles, and Figures 3A to D
2 are plan views of negative and positive transparent films with different shapes, FIG. 4 is a plan view of a pattern mask made from the selected pattern and the transparent films shown in FIGS. 3 A to D, and FIG. 6A is a perspective view of a die made from the patterned mask of FIG. 4; FIG. 6A is an enlarged view of a more complex patterned mask for variable color printing according to the present invention; FIG. 7A is a partial contour view of the segmented image area, and FIGS. 7 to 9 are schematic views of printed matter in other embodiments. (10) Printed matter, (14) (16) (1B) (2
0) Segmented shape area, (22) (24) (26) groove,
(29) Foil, (30) Yellow stripes, (32) Magenta stripes, (34) Cyan stripes, (48) (50) Light source, (
40) (42) Observer, (68) Negative transparent film,
(74) Positive transparent film, (84) Synthetic mask, (9
2) Gui Patent Applicant Roparto J. Mancuso ＼ Mean Co., Ltd. August 31, 1990 1990 Patent Application No. 122784 2 Title of Invention Variable Color Printed Materials and Method for Manufacturing the Same 3 Case of Person Who Makes Amendment Relationship with: Patent applicant name (name) Robert Jay Mancuso 4, agent ■604

Claims (9)

[Claims] (1) A figurative medium that divides the area of a printed image, a line pattern oriented in different directions expressed in each divided figurative area, and transmission or reflection of light repeatedly arranged in parallel in a direction that crosses the essential orientation direction of the line pattern. A printed matter that consists of repeated changes in light and colors applied in the same adjustment sequence, so that the color of the figure changes as the viewing angle changes. (2) The printed matter according to claim 1, wherein the repeated changes in light are configured by repeatedly changing light transmittance. (3) The printed matter according to claim 2, wherein the figurative medium includes a layer representing lines with low light transmittance and a layer representing repeated changes in color, which are arranged at intervals in the thickness direction. (4) The printed matter according to claim 1, wherein the change in light based on the line pattern repeatedly changes in the reflection angle of a reflective material provided on the patterned medium. (5) The printed matter according to claim 4, wherein the layer in which the figurative medium represents repeated changes in color and the reflective layer are arranged at intervals in the thickness direction. (6) A pattern mask for forming a printed matter according to claim 1, which is formed by combining line patterns oriented in different directions in each segmented area. (7) A color plate, corresponding to the pattern mask according to claim 6, in which the colors for printing are aligned in parallel and in the same alignment in a direction transverse to the orientation direction of the line pattern. (8) specifying a number of different feature regions; selecting a line pattern for each region; forming a feature pattern mask having line patterns oriented in different directions for each region; pattern mask; forming a plurality of color plates from the pattern mask corresponding to each color selected for printing, and applying each selected color to the figurative medium to form a pattern. A method for producing a variable color printed matter, comprising the step of arranging the colors. (9) specifying a number of different feature regions; selecting a line pattern for each region; forming a feature pattern mask having a line pattern oriented in a different direction for each region; pattern mask; forming a plurality of color plates from the pattern mask corresponding to each color selected for printing; thermally transferring the imaging medium using the metal die; each selection A method for producing a variable color printed matter, comprising the steps of applying the transferred color to a transferred figurative medium and arranging the color on a pattern.