Patent ID: 8633953
Filing Date: 2014-01-21
Classification: G03G

Abstract:
1. A developer cartridge comprising: a developer-carrying roller having a peripheral surface on which developer is carried, the developer-carrying roller configured to be rotated about a rotational axis; and a casing that has an opening formed therein and supports the developer-carrying roller in an exposed position in the opening, the opening having an edge extending in a direction parallel to the rotational axis, the casing including a reinforcing member that is substantially formed in a single box-shape having a length substantially equal to a length of the developer-carrying roller in a direction parallel to the rotational axis and is integrally provided with the edge of the opening for reinforcing the edge, the casing being formed of a resin, the reinforcing member being integrally provided with a first wall, a second wall, a third wall, and a fourth wall, the first wall extending along the edge of the opening and having a first end and a second end opposite to the first end in a direction that the first wall extends, the second wall extending along the edge of the opening and facing the first wall and having a third end and a fourth end opposite to the third end in a direction that the second wall extends, the third wall connecting the first end and the third end, the fourth wall connecting the second end and the fourth end.