Security element and data carrier provided with same

Abstract

A semi-transparent security element which upon viewing in incident light and in transmitted light has different colors, comprises either (a) a transparent carrier substrate having a front side and a back side. The front side has a metallic layer V-a dyed in a first color, obtainable by printing technology by means of dyed metal pigments. The back side has an ink layer appearing in a second color R-a and a metallic layer R-b dyed in a first color, obtainable by printing technology by means of dyed metal pigments; or (b) a transparent carrier substrate having a front side and a back side. The front side has a semi-transparent metallic layer V-A and an ink layer appearing in a first color V-B and the back side has an ink layer R-A appearing in a second color, a semi-transparent metallic layer R-B and an ink layer R-C appearing in a first color.

Claims

1. A semi-transparent security element for safeguarding value documents, which semi-transparent security element upon viewing in incident light and in transmitted light has different colors, comprising a transparent carrier substrate having a front side and a back side and first and second metallic layers V-a, R-b, respectively, dyed in a first color, having an ink layer R-a arranged between the first and second metallic layers V-a, R-b and appearing in a second color; wherein the front side of the transparent carrier substrate has the first metallic layer V-a dyed in the first color, and the back side of the transparent carrier substrate has the ink layer R-a appearing in the second color and adjacent the back side of the transparent carrier substrate and the second metallic layer R-b dyed in the first color and adjacent the ink layer R-a; wherein the transparent carrier substrate on the front side and/or the back side is furnished with an emboss-lacquer layer which has a relief structure forming a diffractive structure and/or a relief structure forming a micromirror arrangement.

2. The semi-transparent security element according to claim 1, wherein the first metallic layer V-a dyed in the first color, as well as the second metallic layer R-b dyed in the first color, respectively are metallic layers dyed in yellow and the ink layer R-a appearing in the second color is a blue ink layer.

3. The security element according to claim 1, wherein the security element is a strip, a thread or a patch or label.

4. A data carrier having a security element according to claim 1.

5. The data carrier according to claim 4, wherein the data carrier is a paper bank note, polymer bank note or foil composite bank note, or identification card.

6. The data carrier according to claim 4, wherein the security element is arranged above a window region formed in the data-carrier substrate.

7. A semi-transparent security element for safeguarding value documents, which semi-transparent security element upon viewing in incident light and in transmitted light has different colors, comprising a transparent carrier substrate having a front side and a back side; wherein the front side of the transparent carrier substrate has an ink layer V-B appearing in a first color and a semi-transparent metallic layer V-A adjacent the ink layer V-B and the front side of the transparent carrier substrate, and the back side of the transparent carrier substrate has an ink layer R-A appearing in a second color and adjacent the back side of the transparent carrier substrate, a semi-transparent metallic layer R-B adjacent the ink layer R-A, and an ink layer R-C appearing in the first color and adjacent the semi-transparent metallic layer R-B; wherein the transparent carrier substrate on the front side and/or the back side is furnished with an emboss-lacquer layer which has a relief structure forming a diffractive structure and/or a relief structure forming a micromirror arrangement.

8. The semi-transparent security element according to claim 7, wherein the semi-transparent metallic layer V-A and the semi-transparent metallic layer R-B are formed independently of each other of a metal and the metal respectively is chosen from the group consisting of Al, Ag, Ni, Cr, Cu, Au and an alloy of one or several the hereinabove mentioned elements.

9. The semi-transparent security element according to claim 7, wherein the ink layer V-B appearing in a first color and the ink layer R-C appearing in the first color respectively is a yellow ink layer and the ink layer R-A appearing in the second color is a blue ink layer.

Description

DETAILED DESCRIPTION OF VARIOUS EMBODIMENTS

(1) FIG. 1 a security element according to the invention;

(2) FIG. 2 a further security element according to the invention;

(3) FIG. 3 still a further security element according to the invention.

EXEMPLARY EMBODIMENT 1

(4) FIG. 1 shows a value document, namely a bank note, having a window region and a security element according to the invention applied to the value-document substrate in the window region. The window region of the value document is formed by a recess generated e.g. by means of punching 2 in the paper layer 1. The security element has the following layers: a) a metallic layer 3 dyed in yellow color, obtainable by printing technology by means of yellow-dyed metal pigments; b) a transparent carrier substrate 4; c) a blue color lacquer 5; d) a metallic layer 6 dyed in yellow color, obtainable by printing technology by means of yellow-dyed metal pigments.

(5) The security element can have on the surface of the layer 6 (not shown in FIG. 1) an adhesive layer, e.g. a heat seal coating, for bonding the security element to the paper layer 1 of the value document.

(6) The block arrow 7 shows the view of the front side of the security element. Upon viewing the front side of the security element in incident light, the viewer perceives the security element in golden color.

(7) The block arrow 8 shows the view of the back side of the security element. Upon viewing the back side of the security element in incident light, the viewer perceives the security element in golden color.

(8) Upon viewing in transmitted light, from the front side as well as from the back side, the security element appears in the color blue.

EXEMPLARY EMBODIMENT 2

(9) FIG. 2 shows a security element according to the invention according to a further embodiment example. The security element has the following layers: a) a metallic layer 9 dyed in yellow color, obtainable by printing technology by means of yellow-dyed metal pigments; b) an emboss-lacquer layer 10, e.g. a UV lacquer, which contains in particular a relief structure forming a diffractive structure and/or a relief structure forming a micromirror arrangement; c) a transparent carrier substrate 11; d) a blue color lacquer 12; e) a metallic layer 13 dyed in yellow color, obtainable by printing technology by means of yellow-dyed metal pigments.

(10) Upon viewing in transmitted light, from the front side as well as from the back side, the security element appears in the color blue.

(11) Upon viewing of the front side in incident light, as well as upon viewing the back side in incident light, the viewer perceives the security element in golden color. The viewer thereby perceives in incident light a hologram and/or a micromirror arrangement upon viewing of the metallic layer 9.

EXEMPLARY EMBODIMENT 3

(12) FIG. 3 shows a security element according to the invention according to a further embodiment example. The security element has the following layers:

(13) A) a yellow color lacquer 14;

(14) B) a semi-transparent Al layer 15;

(15) C) a transparent carrier substrate 16;

(16) D) a blue color lacquer 17;

(17) E) a semi-transparent Al layer 18; and

(18) F) a yellow color lacquer 19.

(19) Upon viewing in transmitted light, from the front side as well as from the back side, the security element appears in the color blue.

(20) Upon viewing of the front side in incident light, as well as upon viewing the back side in incident light, the viewer perceives the security element in golden color.

EXEMPLARY EMBODIMENT 4

(21) A further security element according to the invention has the following layers:

(22) A) a yellow color lacquer;

(23) B) a semi-transparent Al layer;

(24) C) a transparent carrier substrate;

(25) D) a red color lacquer;

(26) E) a semi-transparent Al layer; and

(27) F) a yellow color lacquer.

(28) Upon viewing in transmitted light, from the front side as well as from the back side, the security element appears in reddish color.

(29) Upon viewing of the front side in incident light, as well as upon viewing the back side in incident light, the viewer perceives the security element in golden color.

EXEMPLARY EMBODIMENT 5

(30) A further security element according to the invention has the following layers:

(31) a transparent carrier substrate;

(32) a Cu layer;

(33) a color lacquer in the color green;

(34) a Cu layer;

(35) Upon viewing in transmitted light, from the front side as well as from the back side, the security element appears in the color green.

(36) Upon viewing of the front side in incident light, as well as upon viewing the back side in incident light, the viewer perceives the security element in metallic-copper color.

EXEMPLARY EMBODIMENT 6

(37) A further security element according to the invention has the following layers: a metallic layer dyed in yellow color, obtainable by printing technology by means of yellow-dyed metal pigments; a transparent carrier substrate; a green color lacquer; a metallic layer dyed in yellow color, obtainable by printing technology by means of yellow-dyed metal pigments.

(38) Upon viewing in transmitted light, from the front side as well as from the back side, the security element appears in the color green.

(39) Upon viewing of the front side in incident light, as well as upon viewing the back side in incident light, the viewer perceives the security element in golden color.

EXEMPLARY EMBODIMENT 7

(40) A further security element according to the invention has the following layers: a metallic layer dyed in yellow color, obtainable by printing technology by means of yellow-dyed metal pigments; a transparent carrier substrate; a red color lacquer; a metallic layer dyed in yellow color, obtainable by printing technology by means of yellow-dyed metal pigments.

(41) Upon viewing in transmitted light, from the front side as well as from the back side, the security element appears in the color red.

(42) Upon viewing of the front side in incident light, as well as upon viewing the back side in incident light, the viewer perceives the security element in golden color.

EXEMPLARY EMBODIMENT 8

(43) A further security element according to the invention has the following layers: a transparent carrier substrate; an emboss-lacquer layer, e.g. a UV lacquer, which contains in particular a relief structure forming a diffractive structure and/or a relief structure forming a micromirror arrangement; a metallic layer dyed in yellow color, obtainable by printing technology by means of yellow-dyed metal pigments; a blue color lacquer; a metallic layer dyed in yellow color, obtainable by printing technology by means of yellow-dyed metal pigments.

(44) Upon viewing in transmitted light, from the front side as well as from the back side, the security element appears in the color blue.

(45) Upon viewing of the front side in incident light, as well as upon viewing the back side in incident light, the viewer perceives the security element in golden color. The viewer thereby perceives in incident light a hologram and/or a micromirror arrangement upon viewing of the metallic layer.

EXEMPLARY EMBODIMENT 9

(46) A further security element according to the invention has the following layers: a metallic layer dyed in yellow color, obtainable by printing technology by means of yellow-dyed metal pigments; a transparent carrier substrate; a green color lacquer which is imprinted in the form of a line-shaped pattern; a metallic layer dyed in yellow color, obtainable by printing technology by means of yellow-dyed metal pigments.

(47) Upon viewing in transmitted light, from the front side as well as from the back side, the security element appears in the form of a green, line-shaped motif.

(48) Upon viewing of the front side in incident light, as well as upon viewing the back side in incident light, the viewer perceives the security element in golden color.