JP2010186099A5

JP2010186099A5 -

Info

Publication number: JP2010186099A5
Application number: JP2009030791A
Authority: JP
Filing date: 2009-02-13
Publication date: 2012-03-22
Anticipated expiration: 2029-02-13

Description

また、本発明に係る現像装置の第３の構成は、前記第２の構成において、前記封止部材による封止時において、前記第二室内の現像剤の体積をＶ、前記第二室内に設けられた搬送部材の体積をｖ、前記第二室の断面積をＺ、前記第二室の現像剤搬送方向の長さをＬ、前記第二室の前記搬送部材のうち、現像剤搬送方向下流側に設けられた現像剤返し部の長さをｌ、前記排出口から前記規制部材までの距離をＸ、としたとき、Ｚ×(Ｌ−Ｘ)−{(Ｌ−Ｘ)／Ｌ}×ｖ≧Ｖ、但し、Ｘ≧ｌであることを特徴とする。 The third structure of the developing apparatus according to the present invention, prior Symbol second configuration, at the time of sealing with the sealing member, the volume of the second chamber of the developer V, and the second chamber The volume of the transport member provided is v, the cross-sectional area of the second chamber is Z, the length of the second chamber in the developer transport direction is L, and among the transport members of the second chamber, the developer transport direction Z × (L−X) − {(L−X) / L} where l is the length of the developer return portion provided on the downstream side and X is the distance from the discharge port to the regulating member. Xv ≧ V, where X ≧ l.

また、本発明に係る画像形成装置は、前記第１〜第３の構成の現像装置を備えた画像形成装置において、前記画像形成装置の電源投入後のイニシャライズ動作時の前記第二室の前記循環路に設けられた搬送部材の空回転動作速度は、通常の画像形成動作時の回転動作速度よりも遅い速度で駆動を行うことを特徴とする。 In the image forming apparatus according to the present invention, the circulation in the second chamber at the time of initialization operation after power-on of the image forming apparatus is provided in the image forming apparatus including the developing devices having the first to third configurations. idling operation speed of the conveyance members provided on the road is characterized in that for driving at normal speed slower than the rotational operating speed during the image forming operation.

Claims

A first chamber in which developer can be stored;
Forming a circulation path for circulating the developer by communicating with the first chamber, and a second chamber capable of storing the developer;
Conveying means for conveying the developer in the first chamber and the second chamber;
A replenishing port for replenishing developer having toner and carrier in the second chamber;
A discharge port for discharging the developer provided in the second chamber;
And a regulating member that regulates the developer surface height of the developer in the second chamber, the height level of the lower end being set at a position higher than at least the lower end of the outlet, and toward the outlet. Developing device.

A sealing member for sealing a communication path between the first chamber and the second chamber so that the developer is filled in the second chamber, and a height level of a lower end of the regulating member is 2. The developing device according to claim 1, wherein the developing device is provided at a position lower than a developer surface in the second chamber when sealed by a stop member.

At the time of sealing by the sealing member, the volume of the developer in the second chamber is V, the volume of the transport member provided in the second chamber is v, the cross-sectional area of the second chamber is Z, and the second chamber The length of the chamber in the developer conveying direction is L, and the length of the developer returning portion provided on the downstream side in the developer conveying direction among the conveying members of the second chamber is l, and the regulating member is connected to the discharge port. When the distance to is X,
Z × (L−X) − {(L−X) / L} × v ≧ V, where X ≧ l
The developing device according to 請 Motomeko 2 shall be the characterized in that.

In the image forming apparatus provided with the developing device according to claim 1,
Idling operation speed of the conveyance member provided in the circulation path of the second chamber during initializing operation after power-on of the image forming apparatus, at a slower speed than the rotational operating speed of the normal image forming operation An image forming apparatus that performs driving.