Toner supplying device and image forming apparatus using same

摘要

A toner supplying device including a secondary toner container, a first feeding member performing a first feeding operation of feeding toner from a toner container to the secondary container on demand, a second feeding member performing a second feeding operation of feeding the toner from the secondary container to a developing device on demand, and a toner supply controller controlling the amount of the toner in the secondary container to be greater than a predetermined amount. The controller performs first control in which when the first feeding operation is performed, the amount of the toner fed in the second feeding operation per unit of time is decreased, or second control in which when the amount of the toner fed in the second feeding operation is greater than a predetermined amount, the amount of the toner fed in the first feeding operation per unit of time is decreased.

主权项

1. A toner supplying device for supplying a toner from a toner container to a developing device, comprising:
a secondary toner container disposed between the toner container and the developing device to temporarily store the toner; a first feeding member configured to perform a first toner feeding operation of feeding the toner from the toner container to the secondary toner container on demand; a second feeding member configured to perform a second toner feeding operation of feeding the toner from the secondary toner container to the developing device on demand; and a toner supply controller configured to
control the first and second toner feeding operations so that an amount of the toner in the secondary toner container is greater than a predetermined amount, andperform one of a first control operation and a second control operation, wherein, in the first control operation, when the first toner feeding operation is performed, an amount of the toner fed in the second toner feeding operation per unit of time is relatively decreased to a maximum toner feeding amount greater than 0 compared to a case of a normal toner feeding amount in which the first toner feeding operation is not performed, and wherein, in the second control operation, when the amount of the toner fed in the second toner feeding operation is greater than a predetermined amount, an amount of the toner fed in the first toner feeding operation per unit of time is relatively decreased compared to a case in which the amount of the toner fed in the second toner feeding operation is not greater than the predetermined amount.