# US 2010/0164218 A1 · Method for providing prints with fluorescent effects and the print item

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- Number: US 2010/0164218 A1
- Document ID: US20100164218A1
- Status: Published application
- Kind: A1
- Application number: 12/293,568
- Filed: 2007-03-14
- Published: 2010-07-01
- Earliest claimed: 2006-03-21
- Assignees: Eastman Kodak Company
- Inventors: Detlef Schulze-Hagenest; Dinesh Tyagi
- Web page: https://patentgrep.com/patent/US20100164218A1

## CPC

- G03G 21/04: Preventing copies being made of an original
- G03G 7/00: Selection of materials for use in image-receiving members, i.e. for reversal by physical contact; Manufacture thereof
- G03G 7/0013: {Inorganic components thereof}
- G03G 7/002: {Organic components thereof}
- G03G 8/00: Layers covering the final reproduction, e.g. for protecting, for writing thereon
- G03G 9/09: Colouring agents for toner particles
- G03G 9/0902: {Inorganic compounds}
- G03G 9/0926: {characterised by physical or chemical properties}
- G03G 15/6585: {by using non-standard toners, e.g. transparent toner, gloss adding devices}
- G03G 2215/00805: Gloss adding or lowering device
- G03G 2215/0081: Gloss level being selectable
- G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY

## Abstract

The invention describes a method providing prints with fluorescent effects on a document generated by color electrophotographic print processes, employing an electrophotographic printer equipped with five print modules, where four printing stations are equipped with black, yellow, magenta and cyan toners and a fifth station is equipped with substantially clear fluorescent toners to be printed on top of the color toners or directly on a substrate of the print document. In further developments of the present invention, the clear fluorescent toner absorbs light in the UV-A range or comprises metallic pigments or metallic effect pigments added to the clear fluorescent toner.

## Claims

### Claim 1

A method for providing prints with fluorescent effects on a document generated by a color electrophotographic printing machine having four printing stations equipped with black, yellow, magenta and cyan toners
wherein the color electronhotographic printing machine further comprises a fifth printing station is equipped with substantially clear fluorescent toner, and such substantially clear fluorescent toner is printed on top of the color toners or directly on a substrate of the document.

### Claim 2 (depends on 1)

The method of claim 1, wherein the clear fluorescent toner absorbs light in the UV-A range

### Claim 3 (depends on 2)

The method of claim 2, wherein the mean particle size of the toner is 4-20 μm.

### Claim 4 (depends on 3)

The method of claim 3, wherein the mean particle size of the toner is 4-8 μm.

### Claim 5 (depends on 1)

The method of claim 1, wherein the substrate of the document is sequentially passed through a printing mechanism where CMYK colors are applied to the substrate, a printing unit where the substantially clear fluorescent toner is applied, and a fusing mechanism.

### Claim 6 (depends on 1)

The method of claim 1 wherein the clear fluorescent toner emits blue fluorescent light.

### Claim 7 (depends on 1)

The method of claim 1 wherein the clear fluorescent toner emits green fluorescent light.

### Claim 8 (depends on 1)

The method of claim 1, wherein the clear fluorescent toner emits red fluorescent light.

### Claim 9 (depends on 8)

The method of claim 8, wherein the clear fluorescent toner includes a dye with the structure:

### Claim 10 (depends on 1)

The method of claim 1, wherein metallic pigments or metallic effect pigments are added to the clear fluorescent toner.

### Claim 11 (depends on 10)

The method of claim 10, wherein the metallic pigment is plate shaped.

### Claim 12

A print item produced by use of color electrophotographic print processes showing fluorescent effects, wherein a substantially clear fluorescent toner is printed on top of a printed image which is produced of black, yellow, magenta and cyan toners.

### Claim 13 (depends on 12)

A print item of claim 12, wherein the clear fluorescent toner absorbs light in the UV-A range.

### Claim 14 (depends on 12)

A print item of claim 12, wherein the clear fluorescent toner emits blue fluorescent light

### Claim 15 (depends on 12)

A print item of claim 12, wherein the clear fluorescent toner emits green fluorescent light

### Claim 16 (depends on 12)

A print item of claim 12, wherein the clear fluorescent toner emits red fluorescent light

### Claim 17 (depends on 16)

A print item of claim 16, wherein the clear fluorescent toner includes a dye with the structure:

### Claim 18 (depends on 12)

A print item of claim 12, wherein the clear fluorescent toner have metallic pigments or metallic effect pigments added to it.