# US 6,720,064 B2 · Image-receiving sheet for electrophotography

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- Number: US 6,720,064 B2
- Document ID: US6720064B2
- Status: Granted
- Kind: B2
- Application number: 10/173,104
- Filed: 2002-06-18
- Published: 2003-03-06
- Granted: 2004-04-13
- Earliest claimed: 2001-06-22
- Assignees: Fuji Photo Film Co., Ltd.
- Inventors: Yasutomo Goto
- Web page: https://patentgrep.com/patent/US6720064B2

## CPC

- G03G 7/0006: {Cover layers for image-receiving members; Strippable coversheets}
- G03G 7/0046: {obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds}
- Y10T 428/24802: Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
- Y10T 428/24942: including components having same physical characteristic in differing degree
- Y10T 428/31786: Of polyester [e.g., alkyd, etc.]
- G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

An image-receiving sheet for electrophotography having improved gloss is provided, which sheet is capable of preventing reverse transferring of a toner image to the fixing part, i.e., offset. The image-receiving sheet is capable of improving peeling of the image-receiving sheet and the fixing part from each other to provide stable paper feeding ability and a stable image. The image-receiving sheet comprises a toner image-receiving layer containing a polymer, wherein relationship between a surface tension of said polymer (γp)(mN/m) determined at a toner fixing temperature and a surface tension of a toner (γt)(mN/m) determined at said toner fixing temperature meets the following formula; γp−γt≧8.

## Claims

### Claim 1

An image-receiving sheet for electrophotography, which comprises a toner image-receiving layer containing a polymer, wherein a relationship between a surface tension of said polymer (γp) (mN/m) determined at a toner fixing temperature and a surface tension of a toner (γt) (mN/m) determined at said toner fixing temperature meets the following formula (I);
γp−γt≧8 (I)

### Claim 2 (depends on 1)

The image-receiving sheet of claim 1 wherein said image-receiving sheet for electrophotography is used for an electrophotographic device having a fixing belt.

### Claim 3 (depends on 1)

The image-receiving sheet of claim 1 wherein γp and γt meet the following formula: γp−γt≧9.

### Claim 4 (depends on 1)

The image-receiving sheet of claim 1 wherein said toner image-receiving layer contains a polyester resin.

### Claim 5 (depends on 1)

The image-receiving sheet of claim 1 wherein said toner contains a polyester resin.

### Claim 6 (depends on 1)

The image-receiving sheet of claim 1 wherein said toner fixing temperature is 100 to 180° C.