# US 11,078,350 B2 · Cleaning member, production method of same, and image forming apparatus

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- Number: US 11,078,350 B2
- Document ID: US11078350B2
- Status: Granted
- Kind: B2
- Application number: 16/517,893
- Filed: 2019-07-22
- Published: 2020-03-12
- Granted: 2021-08-03
- Earliest claimed: 2018-09-11
- Assignees: Konica Minolta, Inc.
- Applicants: Konica Minolta, Inc.
- Inventors: Taiki Amemiya; Yukio Hosoya; Kunihiro Ogura
- Web page: https://patentgrep.com/patent/US11078350B2

## CPC

- C08L 15/02: Rubber derivatives containing halogen
- B41J 2/16517: {Cleaning of print head nozzles (B41J2/16505, B41J2/1707 take precedence)}
- B41J 29/17: Cleaning arrangements
- C08G 18/10: Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
- C08G 18/4238: {derived from dicarboxylic acids and dialcohols}
- C08G 18/4607: {having halogens}
- C08G 18/7671: {containing only one alkylene bisphenyl group}
- C08G 18/83: Chemically modified polymers
- C08L 19/00: Compositions of rubbers not provided for in groups C08L7/00 - C08L17/00
- G03G 21/0017: {Details relating to the internal structure or chemical composition of the blades}
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY

## Abstract

Provided is a cleaning member including a urethane rubber, wherein the urethane rubber has a cyclic structure portion in which a fluorine atom is directly bonded to the cyclic structure portion.

## Claims

### Claim 1

A cleaning member comprising a urethane rubber,
wherein the urethane rubber has a cyclic structure portion in which a fluorine atom is directly bonded to the cyclic structure portion.

### Claim 2 (depends on 1)

The cleaning member described in claim 1,
wherein the fluorine atom is present at least on a surface of the cleaning member.

### Claim 3 (depends on 1)

The cleaning member described in claim 1,
wherein the fluorine atom is present in a region within 20 μm in depth from a surface of the cleaning member.

### Claim 4 (depends on 1)

The cleaning member described in claim 1 used for an ink jet printing or an electrophotographic printing.

### Claim 5 (depends on 1)

The cleaning member described in claim 1 having a form of a cleaning blade.

### Claim 6 (depends on 1)

A method of producing the cleaning member described in claim 1, comprising the step of:
fluorinating the urethane rubber by reacting the urethane rubber with a fluorine gas or a fluorine compound gas.

### Claim 7 (depends on 6)

The method of producing the cleaning member described in claim 6,
wherein the urethane rubber is reacted with a fluorine gas in the step of fluorinating the urethane rubber.

### Claim 8 (depends on 6)

The method of producing the cleaning member described in claim 6,
wherein the method further contains the step of:
molding the urethane rubber.

### Claim 9 (depends on 1)

An image forming apparatus equipped with the cleaning member described in claim 1.