US 2011/0211864 A1 · CARTRIDGES, SUCH AS DEVELOPER CARTRIDGES, FOR AN IMAGE FORMING APPARATUS, SUCH AS A PRINTER

Abstract

A cartridge includes an engagement gear which includes a first engaging portion and is configured to selectively rotate. The cartridge also includes a rotational body which includes a second engaging portion, and a center axis of the rotational body is aligned with a center axis of the engagement gear. Moreover, the cartridge includes an extension portion which is positioned offset from a center of rotation of the rotational body. The engagement gear and the rotational body are configured to selectively be positioned in one of a first state in which the second engaging portion and the first engaging portion are separated from each other, and a second state in which the second engaging portion engages the first engaging portion. The rotational body is configured to rotate with the engagement gear when the engagement gear rotates and the engagement gear and the rotational body are in the second state.

Claims4

Dependent claims

A cartridge comprising:

a casing configured to accommodate a developer therein;
a developing roller disposed at the casing and configured to carry the developer;
a first rotational body disposed at the casing;
and
a second rotational body disposed at the casing and comprising an extension portion that protrudes to an opposite side of the casing, wherein the extension portion is positioned offset from a center of rotation of the second rotational body,
wherein the first rotational body is configured to transmit a driving force to the second rotational body, and wherein the second rotational body is configured to start rotating at a predetermined amount of time after the first rotational body starts rotating.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

13/104,959Filed 10 May 2011

Priority

JP 2007-05072428 Feb 2007

Published

1 Sep 2011

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

G03G 15/0896
Using a solid developer, e.g. powder developer: arrangements or disposition of the complete developer unit or parts thereof not provided for by…
G03G 21/1647
For connecting the different parts of the apparatus: mechanical connection means
G03G 21/1676
Means for handling parts of the apparatus in the apparatus: for the developer unit
G03G 2221/163
Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts: for the developer unit

Cartridges, such as developer cartridges, for an image forming apparatus, such as a printer

Life of this patent

Cartridges, such as developer cartridges, for an image forming apparatus, such as a printer

Life of this patent

Abstract

Claims4