DEVELOPER CONVEYANCE DEVICE, IMAGE FORMING APPARATUS, AND DEVELOPER CONVEYANCE METHOD

摘要

An image forming apparatus includes a developing device; a developer conveyance device including a developer container, a developer reservoir to receive developer discharged from the developer container, and a positive-displacement pump to discharge, from the developer reservoir, developer supplied to the developing device by alternately generating positive pressure and negative pressure due to volume changes; and a controller to control driving of the positive-displacement pump. When the controller recognizes a developer end state of the developer container, the controller lowers a developer conveyance capability of the positive-displacement pump from a setting used before the developer end state is recognized.

主权项

1. An image forming apparatus comprising:
a developing device; a developer conveyance device to convey developer to the developing device, the developer conveyance device comprising:
a developer container;a developer reservoir to receive developer discharged from the developer container; anda positive-displacement pump to discharge, from the developer reservoir, developer supplied to the developing device by alternately generating positive pressure and negative pressure due to volume changes; and a controller to control driving of the positive-displacement pump, wherein, when the controller recognizes a developer end state of the developer container, the controller lowers a developer conveyance capability of the positive-displacement pump from a setting used before the developer end state is recognized.