# US 2014/0155237 A1 · Roller cover and cartridge

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- Number: US 2014/0155237 A1
- Document ID: US20140155237A1
- Status: Published application
- Kind: A1
- Application number: 14/171,952
- Filed: 2014-02-04
- Published: 2014-06-05
- Earliest claimed: 2010-03-24
- Assignees: Brother Kogyo Kabushiki Kaisha
- Inventors: Yasumasa FUJII
- Web page: https://patentgrep.com/patent/US20140155237A1

## CPC

- G03G 15/0818: {characterised by the structure of the donor member, e.g. surface properties}
- G03G 15/0822: {Arrangements for preparing, mixing, supplying or dispensing developer}
- G03G 21/1832: {Shielding members, shutter, e.g. light, heat shielding, prevention of toner scattering}
- G03G 2215/0692: using a slidable sealing member, e.g. shutter
- G03G 2215/0877: Sealing of the developing device opening, facing the image-carrying member
- G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY

## Abstract

A roller cover, which is to be attached to a housing, the roller cover comprising: a protecting portion, which faces the circumference of the roller when the roller cover is attached to the housing; a first end portion, which is provided at one side of the protecting portion in an orthogonal direction; a second end portion; a first opposite portion, which is formed continuously with the first end portion, wherein the first opposite portion is fitted to one side of the housing in the orthogonal direction; and a second opposite portion fitted to the other side of the housing, wherein a first distance between the first opposite portion and the second opposite portion increases during an attachment operation, and wherein, when the attachment operation is completed, a final distance between the first opposite portion and the second opposite portion is less than maximum value of the first distance.

## Claims

### Claim 1

A roller cover, which is to be attached to a housing of a cartridge, which accommodates developer and comprises a roller of which a circumference is exposed through an opening longitudinally 5 formed in the housing,
the roller cover comprising:
a protecting portion, which extends longitudinally in an axial direction of the roller, and which faces the circumference of the roller when the roller cover is attached to the housing;
a first end portion, which is provided at one side of the protecting portion in an orthogonal direction, wherein the orthogonal direction is orthogonal to the axial direction; and wherein the orthogonal direction is also orthogonal to a facing direction, which is a direction between the roller and the protecting portion;
a second end portion, which is provided at one other side of the protecting portion in the orthogonal direction;
a first opposite portion, which is formed continuously with the first end portion, wherein the first opposite portion is fitted to one side of the housing in the orthogonal direction when the roller cover is attached to the housing; and
a second opposite portion, which is formed continuously with the second end portion, wherein the second opposite portion is fitted to the other side of the housing in the orthogonal direction when the roller cover is attached to the housing,
wherein a first distance between the first opposite portion and the second opposite portion increases during an attachment operation, and
wherein, when the attachment operation is completed, a final distance between the first opposite portion and the second opposite portion is less than maximum value of the first distance.

### Claim at position 2

2-54. (canceled)