# US 2013/0156448 A1 · Cleaning device and electrophotographic apparatus

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- Number: US 2013/0156448 A1
- Document ID: US20130156448A1
- Status: Published application
- Kind: A1
- Application number: 13/628,636
- Filed: 2012-09-27
- Published: 2013-06-20
- Earliest claimed: 2011-12-16
- Assignees: Fuji Xerox Co., Ltd.
- Inventors: Toru ISHII
- Web page: https://patentgrep.com/patent/US20130156448A1

## CPC

- G03G 21/0035: {using a brush; Details of cleaning brushes, e.g. fibre density (G03G21/0064 takes precedence; magnetic brushes G03G21/0047)}
- G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY

## Abstract

Provided is a cleaning device including a brush roll that removes residual toner remaining on a surface of a toner image carrier provided in an electrophotographic apparatus, and a pressure detector that contacts the surface of the brush roll with preload, and outputs a detected pressure value to a determination unit that is provided in the electrophotographic apparatus to determine the adhesion state of toner to the brush roll.

## Claims

### Claim 1

A cleaning device comprising:
a brush roll that removes residual toner remaining on a surface of a toner image carrier provided in an electrophotographic apparatus; and
a pressure detector that contacts the surface of the brush roll with preload, and outputs a detected pressure value to a determination unit that is provided in the electrophotographic apparatus to determine the adhesion state of toner to the brush roll.

### Claim 2 (depends on 1)

The cleaning device according to claim 1, wherein
the pressure detector is a pressure sensor device, and
the pressure sensor device is provided in a state where an end portion thereof has entered bristle tips of the brush roll.

### Claim 3 (depends on 1)

The cleaning device according to claim 1, further comprising:
a toner removal part that contacts the surface of the brush roll,
wherein the pressure detector contacts the surface of the brush roll with preload downstream of the toner removal part in a rotational direction of the brush roll.

### Claim 4 (depends on 2)

The cleaning device according to claim 2, further comprising:
a toner removal part that contacts the surface of the brush roll,
wherein the pressure detector contacts the surface of the brush roll with preload downstream of the toner removal part in a rotational direction of the brush roll.

### Claim 5

An electrophotographic apparatus comprising:
a toner image carrier;
a brush roll that removes residual toner remaining on a surface of the toner image carrier;
a pressure detector that contacts the surface of the brush roll with preload; and
a determination unit that determines the adhesion state of toner to the brush roll, on the basis of a pressure value detected by the pressure detector.

### Claim 6 (depends on 5)

The electrophotographic apparatus according to claim 5, further comprising:
an output unit that outputs an alarm,
wherein the determination unit outputs an alarm from the output unit, according to a pressure value detected by the pressure detector having reached a preset reference value.