Development device including a removable seal to seal a supplied-developer and/or a collected-developer communicating area

摘要

A development device can include a developer containing part containing developer, a carrier to carry developer that is supplied from the developer containing part to a development range, a partition dividing the developer containing part into a supply part and a circulation part beneath the supply part to collect developer from the carrier, a first transport member in the supply part of the developer containing part to supply developer from the supply part to the carrier, and a second transport member in the circulation part to transport developer in the circulation part in an axial direction of the carrier. The device can also include a removable seal member, which seals a supplied-developer and/or a collected-developer communicating area.

主权项

1. A development device, comprising:
a developer containing part containing developer; a cylindrical developer carrier to carry, by rotation, developer that is supplied from the developer containing part to a development range; a partition dividing the developer containing part into a supply part and a circulation part disposed beneath the supply part to collect developer from the developer carrier; a first developer transport member disposed in the supply part of the developer containing part to supply developer from the supply part to the developer carrier; a second developer transport member disposed in the circulation part to transport developer in the circulation part in an axial direction of the developer carrier; and a seal member removably installable in the development device to seal a supplied-developer communicating area between the supply part and an area in which the developer carrier is disposed and a collected-developer communicating area between the circulation part and the area in which the developer carrier is disposed.