# US 7,412,186 B2 · Cleaning system for a charging device in a xerographic printer

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- Number: US 7,412,186 B2
- Document ID: US7412186B2
- Status: Granted
- Kind: B2
- Application number: 11/228,898
- Filed: 2005-09-16
- Published: 2007-03-22
- Granted: 2008-08-12
- Earliest claimed: 2005-09-16
- Assignees: Xerox Corporation
- Inventors: David Sekovski; Robert A. Gross; John D. McCaffrey; Michael N. Soures; David K. Ahl; Douglas A. McKeown; Michael G. Petranto
- Web page: https://patentgrep.com/patent/US7412186B2

## CPC

- G03G 15/0258: {provided with means for the maintenance of the charging apparatus, e.g. cleaning devices, ozone removing devices G03G15/0225, G03G15/0291 takes precedence}
- G03G 2215/027: using wires
- G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY

## Abstract

In a xerographic printing apparatus, a charge device is used to apply a charge to a photoreceptor. The shuttle includes a wiper that cleans a sidewall of the charge device. A tab is disposed adjacent the sidewall to retain toner or dirt accumulated by the scraper. The tab is electrically insulative, and effectively covers the accumulated toner or dirt, to lower the possibility of arcing within the charge device.

## Claims

### Claim 1

An apparatus useful in electrostatographic printing, comprising:
a charge device for placing a charge on an imaging surface, the charging device defining at least one side wall surface extending in an extension direction, said side wall surface defining the exterior of the charging device;
a shuttle movable along the extension direction, the shuttle including a scraper urged against the side wall surface; and
a tab disposed near a stop position of the shuttle substantially adjacent the side wall surface, the tab accepting a portion of the scraper and effectively covering against a portion of the side wall surface accumulated material removed from the side wall surface by the scraper,
wherein said charging device comprises a charging element, which is not cleaned by said scraper,
wherein said scraper is disposed between said charging element and said side wall surface.

### Claim 2 (depends on 1)

The apparatus of claim 1, the tab being substantially electrically insulative.

### Claim 3 (depends on 1)

The apparatus of claim 1, the charging device including a housing, the housing defining a wall surface.

### Claim 4 (depends on 1)

The apparatus of claim 1, the charging device including a pin array, the pin array defining a wall surface.

### Claim 5 (depends on 1)

The apparatus of claim 1, further comprising
an imaging member defining an imaging surface disposed adjacent the charge device.

### Claim 6 (depends on 5)

The apparatus of claim 5, wherein the imaging member comprises a photoreceptor.

### Claim 7 (depends on 5)

The apparatus of claim 5, wherein the charge device performs at least one of initial charging, transfer, and detack relative to the imaging member.

### Claim 8

A printing apparatus, comprising:
an imaging member defining an imaging surface;
a charge device for placing a charge on a portion of the imaging surface, the charge device including a corona member and a housing defining a first side wall surface extending in an extension direction, said first side wall surface defining the exterior of the charging device;
a shuttle movable along the extension direction, the shuttle including a wiper for cleaning the corona member and a first scraper useful for cleaning the first side wall surface; and
a substantially electrically insulative tab disposed near a stop position of the shuttle substantially adjacent the side wall surface, the tab accepting a portion of the scraper and effectively covering against a portion of the side wall surface accumulated material removed from the wall surface by the scraper,
wherein said charging device comprises a charging element, which is not cleaned by said scraper,
wherein said scraper is disposed between said charging element and said side wall surface.

### Claim 9 (depends on 8)

The apparatus of claim 8, the charge device defining a second wall surface, and the shuttle including a second scraper useful for cleaning the second wall surface.

### Claim 10 (depends on 8)

The apparatus of claim 8, the charging device including a pin array, the pin array defining a wall surface.

### Claim 11 (depends on 8)

The apparatus of claim 8, the wiper including a member urged against the wall surface.

### Claim 12 (depends on 8)

The apparatus of claim 8, wherein the charge device performs at least one of charging, transfer, and detack relative to the imaging member.