# US 2019/0077176 A1 · Method of producing a transparent polychromatic printed iridescent image

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- Number: US 2019/0077176 A1
- Document ID: US20190077176A1
- Status: Published application
- Kind: A1
- Application number: 15/696,982
- Filed: 2017-09-06
- Published: 2019-03-14
- Earliest claimed: 2010-03-17
- Assignees: Fasver
- Applicants: Fasver
- Inventors: François TRANTOUL; Eric PHILIPPE; Laurence BES
- Web page: https://patentgrep.com/patent/US20190077176A1

## CPC

- B41M 3/144: {using fluorescent, luminescent or iridescent effects}
- B41M 3/008: {Sequential or multiple printing, e.g. on previously printed background; Mirror printing; Recto-verso printing; using a combination of different printing techniques; Printing of patterns visible in reflection and by transparency; by superposing printed artifacts}
- B41M 3/148: {Transitory images, i.e. images only visible from certain viewing angles}
- C09D 11/50: Sympathetic, colour changing or similar inks
- B41M 1/12: Stencil printing; Silk-screen printing
- B41M 1/14: Multicolour printing
- B41M 1/18: Printing one ink over another
- B41M: PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING, (correction of typographical errors B41J; processes for applying transfer pictures or the like B44C1/16; fluid media for correction of typographical errors by coating C09D10/00; printing textiles D06P)
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)

## Abstract

A method of producing a transparent polychromatic printed iridescent image (8) of any kind in which at least two colors change simultaneously when there is a change in the viewing angle of the image under illumination by at least one visible light source.

## Claims

### Claim 1

A method for marking, in which at least one transparent image that has at least one first pattern comprising at least one interferential pigment is printed, with at least one first pattern being formed by a first initial color at a first viewing angle under lighting by at least one visible light source, with the first initial color changing into a first final color at a second viewing angle under lighting by at least one visible light source, distinct from the first viewing angle, the method comprising:
printing at least one printing composition that comprises a powder that comprises at least one interferential pigment is used,
wherein said powder is dispersed with a proportion by mass in a liquid printing medium, and
wherein each interferential pigment and said proportion by mass are selected in such a way that each image is transparent, with the proportion by mass of interferential pigment in the printing composition being selected so that the marking makes it possible to distinguish subjacent patterns by normal viewing, without a specific instrument, at least under lighting with visible light.

### Claim 2 (depends on 1)

The method according to claim 1, wherein the proportion by mass of interferential pigment in the printing composition is between 10% and 25%.

### Claim 3 (depends on 1)

The method according to claim 1, wherein at least one transparent image presents at least one second pattern that comprises at least one interferential pigment, with at least one second pattern being formed by a second initial color at a first viewing angle under lighting by at least one visible light source, and in which the second initial color changes into a second final color at a second viewing angle under lighting by at least one visible light source that is distinct from the first viewing angle.

### Claim 4 (depends on 1)

The method according to claim 1, wherein at least two transparent images are printed; each transparent image is printed by using a printing composition that comprises a proportion by mass of interferential pigment in the printing composition of between 10% and 25%.

### Claim 5 (depends on 1)

The method according to claim 1, wherein at least two transparent images are printed separately, one after the other, with the different transparent images forming—according to a first angular display range—a transparent polychromatic image according to a first additive-synthesis color composition, and—according to a second angular display range—a transparent polychromatic image according to a second color composition, distinct from the first color composition.

### Claim 6 (depends on 3)

The method according to claim 3, wherein the first pattern and the second pattern are printed so that the first initial color and the second initial color are not superposed.

### Claim 7 (depends on 6)

The method according to claim 6, wherein a first interferential printing pigment of the first pattern and a second interferential printing pigment of the second pattern are selected so as to make it possible to swap the first initial color into the second final color and the second initial color into the first final color, with the first initial color being essentially identical to the second final color and the second initial color being essentially identical to the first initial color.

### Claim 8

A marking, with at least one transparent printed image that has at least one first pattern comprising:
at least one interferential pigment of a first initial color at a first viewing angle,
wherein the first initial color changes into a first final color at a second viewing angle that is distinct from the first viewing angle, with the marking making it possible to distinguish subjacent patterns by normal viewing, without a specific instrument, at least under lighting with visible light.

### Claim 9 (depends on 8)

The marking according to claim 8, further comprising:
at least one second transparent printed image that has at least one second pattern that comprises at least one interferential pigment and that forms a second initial color at a first viewing angle and in which the second initial color changes into a second final color at a second viewing angle that is distinct from the first viewing angle, with the marking making it possible to distinguish subjacent patterns by normal viewing, without a specific instrument, at least under lighting with visible light.

### Claim 10 (depends on 8)

The marking according to claim 8, wherein at least one first transparent printed image and at least one second transparent printed image are superposed, with the marking making it possible to distinguish subjacent patterns by normal viewing, without a specific instrument, at least under lighting with visible light.

### Claim 11 (depends on 8)

The marking according to claim 8, wherein at least one first transparent printed image and at least one second transparent printed image are juxtaposed, with the marking making it possible to distinguish subjacent patterns by normal viewing, without a specific instrument, at least under lighting with visible light.

### Claim 12 (depends on 11)

The marking according to claim 11, wherein a first initial color changes into a first final color and a second initial color changes into a second final color, with the first initial color being essentially identical to the second final color and the second initial color is essentially identical to the first final color.

### Claim 13 (depends on 8)

The marking according to claim 8, wherein an initial green color at a first viewing angle changes into a final red color at a second viewing angle that is distinct from the first viewing angle, with the marking making it possible to distinguish subjacent patterns by normal viewing, without a specific instrument, at least under lighting with visible light.

### Claim 14 (depends on 8)

The marking according to claim 8, wherein an initial red color at a first viewing angle changes into a final green color at a second viewing angle that is distinct from the first viewing angle, with the marking making it possible to distinguish subjacent patterns by normal viewing, without a specific instrument, at least under lighting with visible light.

### Claim 15 (depends on 8)

The marking according to claim 8, wherein an initial blue color at a first viewing angle changes into a final yellow color at a second viewing angle that is distinct from the first viewing angle, with the marking making it possible to distinguish subjacent patterns by normal viewing, without a specific instrument, at least under lighting with visible light.

### Claim 16 (depends on 8, 9, 10, 11, 12, 13, 14, 15)

The marking according to one of claims 8 to 15, wherein an initial yellow color at a first viewing angle changes into a final blue color at a second viewing angle that is distinct from the first viewing angle, with the marking making it possible to distinguish subjacent patterns by normal viewing, without a specific instrument, at least under lighting with visible light.

### Claim 17 (depends on 8)

The marking according to one of claim 8, wherein according to a first angular display range, the different images of any type form a transparent polychromatic image according to a first composition of additive-synthesis colors, and according to a second angular display range, the different images of any type form a transparent polychromatic image according to a second color composition, distinct from the first color composition.

### Claim 18 (depends on 8)

An official document comprising a marking according to claim 8, said official document being one of a passport, an identity card, a driver's license, a vehicle registration card, a fiduciary document, in particular a bank note, a check, a credit card, a trip ticket, an admission ticket, and a pass to various performances.