# US 8,784,696 B2 · Intermediate transfer members containing internal release additives

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- Number: US 8,784,696 B2
- Document ID: US8784696B2
- Status: Granted
- Kind: B2
- Application number: 13/468,000
- Filed: 2012-05-09
- Published: 2013-11-14
- Granted: 2014-07-22
- Earliest claimed: 2012-05-09
- Assignees: Xerox Corporation
- Applicants: Jin Wu
- Inventors: Jin Wu
- Web page: https://patentgrep.com/patent/US8784696B2

## CPC

- G03G 15/162: {details of the the intermediate support, e.g. chemical composition}
- C08G 73/105: {with oxygen only in the diamino moiety}
- C08G 73/1071: {Wholly aromatic polyimides containing oxygen in the form of ether bonds in the main chain}
- C08K 3/04: Carbon
- C08K 3/22: of metals
- C08K 5/095: Carboxylic acids containing halogens
- G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)

## Abstract

An intermediate transfer member that includes a polyimide, a conductive component, and a carboxylic acid functionalized fluoro component.

## Claims

### Claim 1

An intermediate transfer member consisting of a mixture of a polyimide, a conductive component, and a carboxylic acid functionalized fluoro compound present in an amount of from about 0.01 to about 10 weight percent of solids and which functionalized fluoro compound is selected from the group consisting of octafluoroadipic acid HOOC(CF2)4COOH, dodecafluorosuberic acid HOOC(CF2)6COOH, hexadecafluorosebacic acid HOOC(CF2)8COOH, heptadecafluoro-n-nonanoic acid CF3(CF2)7COOH, nonadecafluorodecanoic acid CF3(CF2)8COOH, nonafluorovaleric acid CF3(CF2)3COOH, pentadecafluorooctanoic acid CF3(CF2)6COOH, undecafluorohexanoic acid CF3(CF2)4COOH and mixtures therefore and wherein said conductive component is carbon black.

### Claim 2 (depends on 1)

An intermediate transfer member in accordance with claim 1 wherein said carboxylic acid functionalized fluoro compound is selected from a group consisting of octafluoroadipic acid HOOC(CF2)4COOH, and dodecafluorosuberic acid HOOC(CF2)6COOH.

### Claim 3 (depends on 1)

An intermediate transfer member in accordance with claim 1 wherein said carboxylic acid functionalized fluoro compound is dodecafluorosuberic acid, hexadecafluorosebacic acid or octafluoroadipic acid.

### Claim 4 (depends on 1)

An intermediate transfer member in accordance with claim 1 wherein said carboxylic acid functionalized fluoro compound reacts with said polyimide, and said polyimide is a thermosetting polyimide.

### Claim 5 (depends on 4)

An intermediate transfer member in accordance with claim 4 wherein said thermosetting polyimide is generated from curing at a temperature of from about 190° C. to about 325° C. a polyamic acid selected from the group consisting of the polyamic acid of biphenyl tetracarboxylic dianhydride/4,4′-oxydianiline and a polyamic acid of pyromellitic dianhydride/4,4′-oxydianiline.

### Claim 6 (depends on 4)

An intermediate transfer member in accordance with claim 4 wherein the thermosetting polyimide is generated from curing of a component selected from the group consisting of a polyamic acid of pyromellitic dianhydride/4,4′-oxydianiline, a polyamic acid of pyromellitic dianhydride/phenylenediamine, a polyamic acid of biphenyl tetracarboxylic dianhydride/4,4′-oxydianiline, a polyamic acid of biphenyl tetracarboxylic dianhydride/phenylenediamine, a polyamic acid of benzophenone tetracarboxylic dianhydride/4,4′-oxydianiline, a polyamic acid of benzophenone tetracarboxylic dianhydride/4,4′-oxydianiline/phenylenediamine, and mixtures thereof.

### Claim 7 (depends on 1)

An intermediate transfer member in accordance with claim 1 wherein said carboxylic acid functionalized fluoro compound is dodecafluorosuberic acid and wherein said intermediate transfer member accepts a xerographic developed toner image from a photoconductor and which accepted image is subsequently transferred to paper and fixed thereon.

### Claim 8 (depends on 7)

An intermediate transfer member in accordance with claim 7 wherein said dodecafluorosuberic acid reacts with said polyimide and said polyimide is a thermosetting polyimide.

### Claim 9 (depends on 1)

An intermediate transfer member in accordance with claim 1 wherein said carboxylic acid functionalized fluoro compound is present in an amount of from about 0.1 to about 5 weight percent of solids.

### Claim 10 (depends on 1)

An intermediate transfer member in accordance with claim 1 wherein for each ingredient the polyimide is present in an amount of from about 70 to about 95 weight percent, the carboxylic acid functionalized fluoro compound is present in an amount of from about 0.1 to about 2 weight percent, and the conductive component is present in an amount of from about 3 to about 40 weight percent, with the total of said ingredients being about 100 percent of solids.

### Claim 11 (depends on 1)

An intermediate transfer member in accordance with claim 1 wherein the member has a resistivity of from about 109 to about 1013 ohm/square.

### Claim 12 (depends on 1)

An intermediate transfer member in accordance with claim 1 that self releases from a metal substrate.

### Claim 13 (depends on 12)

An intermediate transfer member in accordance with claim 12 wherein the resulting released film is deposited on a supporting substrate.