# US 8,540,900 B2 · Intermediate transfer belts

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- Number: US 8,540,900 B2
- Document ID: US8540900B2
- Status: Granted
- Kind: B2
- Application number: 12/731,449
- Filed: 2010-03-25
- Published: 2011-09-29
- Granted: 2013-09-24
- Earliest claimed: 2010-03-25
- Assignees: Xerox Corporation
- Applicants: Geoffrey M. T. Foley; Jin Wu; Satchidanand Mishra
- Inventors: Geoffrey M. T. Foley; Jin Wu; Satchidanand Mishra
- Web page: https://patentgrep.com/patent/US8540900B2

## CPC

- H01B 3/004: {with conductive additives or conductive layers}
- G03G 15/162: {details of the the intermediate support, e.g. chemical composition}
- Y10T 428/24893: including particulate material
- H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K})
- G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Provided are coating compositions for imaging components, methods of forming imaging components, and imaging components such as, for example, intermediate transfer belts, transfer belts, bias charge rolls, bias transfer rolls, and a magnetic roller sleeve. An exemplary imaging component can include an ultraviolet (UV) cured composite, the UV cured composite including a plurality of conductive species substantially uniformly dispersed in a UV cured acrylate polymer, wherein each of the plurality of conductive species can be selected from a group consisting of salts of organic sulfonic acid, esters of phosphoric acid, esters of fatty acids, ammonium salts, and phosphonium salts, and wherein the UV cured composite can have a surface resistivity in the range of about 107 Ω/square to about 1013 Ω/square.

## Claims

### Claim 1

An imaging component comprising:
an ultraviolet (UV) cured composite, the UV cured composite comprising a plurality of conductive species substantially uniformly dispersed in a UV cured polymer,
wherein each of the plurality of conductive species is selected from a group consisting of esters of phosphoric acid and phosphonium salts, and
wherein the UV cured composite has a surface resistivity in the range of about 108 Ω/square to about 1013 Ω/square and a volume resistivity in the range of about 109 Ωm to about 1014 Ωm.

### Claim 2 (depends on 1)

The imaging component of claim 1, wherein the ultraviolet (UV) cured polymer comprises one or more repeat units selected from the group consisting of trimethylolpropane triacrylate, hexandiol diacrylate, tripropyleneglycol diacrylate, dipropyleneglycol diacrylate, triethyleneglycol divinyl ether, vinyl caprolactam, n-vinyl formamide, urethane acrylates, ester acrylates, epoxy acrylates, ether acrylates, olefin acrylates, and a combination thereof.

### Claim 3 (depends on 1)

The imaging component of claim 1, wherein the plurality of conductive species are present in an amount ranging from about 1% to about 30% by weight of the total solid weight of the UV cured composite composition.

### Claim 4 (depends on 1)

The imaging component of claim 1, wherein each of the plurality of conductive species is selected from the group consisting of phosphate esters of alkyl polyethoxyethanol, phosphate esters of alkylphenoxy polyethoxyethanol), phosphate esters of tridecyl alcohol ethoxylates, phosphate esters of alkyl phenol ethoxylates, tetradecyl(trihexyl)phosphonium chloride, tetradecyl(trihexyl)phosphonium decanoate, trihexyl(tetradecyl)phosphonium bis 2,4,4-trimethylpentylphosphinate, tetradecyl(trihexyl)phosphonium dicyanamide, triisobutyl(methyl)phosphonium tosylate, tetradecyl(trihexyl)phosphonium bistriflamide, tetradecyl(trihexyl)phosphonium hexafluorophosphate, tetradecyl(trihexyl)phosphonium tetrafluoroborate, and ethyl tri(butyl)phosphonium diethylphosphate.

### Claim 5 (depends on 1)

The imaging component of claim 1, wherein the imaging component is in the form of at least one of a sheet, a belt, or a cylindrical roll.

### Claim 6 (depends on 1)

The imaging component of claim 1 further comprising a substrate, such that the ultraviolet (UV) cured composite is disposed over the substrate.

### Claim 7 (depends on 6)

The imaging component of claim 6, wherein the substrate comprises at least one of polystyrene, acrylic, styrene-acrylic copolymer, styrene-butadiene copolymer, polyamide, polyimide, polyethylene, polyethylene terephthalate, polyethylene naphthalate, polypropylene, polyvinyl chloride, polyester, polyurethane, polyvinyl alcohol, or vinyl ether resin.

### Claim 8 (depends on 1)

The imaging component of claim 1 further comprising an outer layer disposed over the UV cured composite.

### Claim 9 (depends on 1)

The imaging component of claim 1 further comprising:
a conformable layer disposed over the UV cured composite, wherein the conformable layer comprises one or more of neoprene, nitrile rubber, polyurethane rubber, epichlorohydrin rubber, and silicone rubber; and
an outer release layer disposed over the conformable layer.

### Claim 10 (depends on 1)

The imaging component of claim 1, wherein the UV cured composite has a volume resistivity in the range of about 109 Ωm to about 1012 Ωm.

### Claim 11 (depends on 1)

The imaging component of claim 1, wherein the UV cured composite has a modulus in the range of about 500 MPa to about 3,000 MPa.

### Claim 12 (depends on 1)

The imaging component of claim 1, wherein the imaging component is selected from the group consisting of a bias charge roll, a bias transfer roll, a magnetic roller sleeve, an intermediate transfer belt, and a transfer belt.

### Claim 13

A coating composition for imaging components comprising:
an ultraviolet (UV) curable resin, the UV curable resin comprising one or more of monomeric acrylates, monomeric vinyls, and oligomeric acrylates;
one or more photoinitiators; and
a plurality of conductive species substantially uniformly dispersed in the UV curable resin, wherein each of the plurality of conductive species is selected from a group consisting of esters of phosphoric acid and phosphonium salts,
wherein the coating composition has a volume resistivity in the range of about 109 Ωm to about 1014 Ωm after the UV curable resin is cured.

### Claim 14 (depends on 13)

The coating composition of claim 13, wherein the monomeric acrylate and monomeric vinyls are selected from the group consisting of trimethylolpropane triacrylate, hexandiol diacrylate, tripropyleneglycol diacrylate, dipropyleneglycol diacrylate, triethyleneglycol divinyl ether, vinyl caprolactam, n-vinyl formamide and a combination thereof.

### Claim 15 (depends on 13)

The coating composition of claim 13, wherein the oligomeric acrylates are selected from the group consisting of urethane acrylates, polyester acrylates, epoxy acrylates, polyether acrylates, and olefin acrylates.

### Claim 16 (depends on 13)

The coating composition of claim 13, wherein the oligomeric acrylates has a molecular weight ranging from about 300 to about 5,000.

### Claim 17 (depends on 13)

The coating composition of claim 13, wherein each of the plurality of conductive species is selected from the group consisting of phosphate esters of alkyl polyethoxyethanol, phosphate esters of alkylphenoxy polyethoxyethanol), phosphate esters of tridecyl alcohol ethoxylates, phosphate esters of alkyl phenol ethoxylates, tetradecyl(trihexyl)phosphonium chloride, tetradecyl(trihexyl)phosphonium decanoate, trihexyl(tetradecyl)phosphonium bis 2,4,4-trimethylpentylphosphinate, tetradecyl(trihexyl)phosphonium dicyanamide, triisobutyl(methyl)phosphonium tosylate, tetradecyl(trihexyl)phosphonium bistriflamide, tetradecyl(trihexyl)phosphonium hexafluorophosphate, tetradecyl(trihexyl)phosphonium tetrafluoroborate, and ethyl tri(butyl)phosphonium diethylphosphate.

### Claim 18 (depends on 13)

The coating composition of claim 13, wherein the plurality of conductive species are present in an amount ranging from about 1% to about 30% by weight of the total weight of the ultraviolet (UV) curable coating composition.

### Claim 19 (depends on 13)

The coating composition of claim 13, wherein the one or more photoinitiators comprises one or more of a first photoinitiator for a surface curing of the UV curable resin and a second photoinitiator for a bulk curing of the UV curable resin.

### Claim 20 (depends on 13)

The coating composition of claim 13, wherein the one or more photoinitiators comprises one or more of acyl phosphines, α-hydroxyketones, benzyl ketals, α-aminoketones, and mixtures thereof.