JP2015215369A5

JP2015215369A5 -

Info

Publication number: JP2015215369A5
Application number: JP2014096117A
Authority: JP
Filing date: 2014-05-07
Publication date: 2017-01-12
Anticipated expiration: 2034-05-07

Description

上記目的を達成するために、請求項１の発明は、少なくともトナーを含む現像剤を収容する現像剤収容部と、前記現像剤収容部内の現像剤を担持して表面移動することにより、潜像担持体の表面と対向する現像領域へ現像剤を搬送する現像剤担持体とを備え、前記現像領域で前記トナーを前記潜像担持体の潜像に付着させてトナー像として現像する現像装置であって、前記現像剤収容部の側壁に設けた連通穴に接続し、トナー補給手段から補給されたトナーを、前記連通穴へ搬送する補給トナー搬送路を有し、前記連通穴の側壁内壁面側の開口を現像剤収容部内の現像剤で塞ぐことを特徴とするものである。
To achieve the above object, a first aspect of the invention, at least a current image containing portion you containing a developer including a toner, by the surface carrying the developer in the developer accommodating portion moves, And a developer carrying member that conveys the developer to a developing region facing the surface of the latent image carrying member, and developing the toner image by attaching the toner to the latent image on the latent image carrying member in the developing region. The apparatus includes a replenishment toner conveyance path that is connected to a communication hole provided in a side wall of the developer accommodating portion and conveys the toner replenished from the toner replenishing means to the communication hole, and the side wall of the communication hole The opening on the inner wall surface side is closed with the developer in the developer accommodating portion.

Claims

And the current image developer container you containing a developer containing at least toner,
A developer carrying member that carries the developer in the developer containing portion and moves the surface to move the developer to a developing region facing the surface of the latent image carrying member;
A developing device for developing the toner image by attaching the toner to the latent image of the latent image carrier in the development region;
A replenishment toner conveyance path that is connected to a communication hole provided in a side wall of the developer accommodating portion and conveys the toner replenished from the toner replenishing means to the communication hole;
A developing device characterized in that an opening on an inner wall surface side of the communication hole is closed with a developer in a developer accommodating portion.

The developing device according to claim 1,
The developer in the developer container is circulated and conveyed,
A developing device characterized in that the developer being circulated is retained and the opening on the inner wall surface side of the communication hole is closed with the retained developer.

The developing device according to claim 2,
In the developer accommodating portion, a developer screw for agitating and conveying the developer is provided,
A developing device, wherein a wingless portion is provided in the vicinity of the opening on the inner wall surface side of the communication hole of the conveying screw.

The developing device according to claim 3,
The developer includes a magnetic carrier;
2. A developing device according to claim 1, wherein a magnet is disposed in the vicinity of the opening on the inner wall surface side of the communication hole in the developer container.

The developing device according to claim 4,
The developing device, wherein the magnet has a magnetic flux density of 115 mT or more.

The developing device mounting serial to claim 5,
A partition wall for partitioning said developer accommodating portion,
A transport screw arranged in each room partitioned by the partition wall so that the developer transport directions are different from each other;
A delivery opening for delivering the developer from one chamber partitioned by the partition wall to the other chamber on the downstream side in the developer transport direction of each transport screw;
The communication hole is provided on the side wall at the upstream end in the developer conveyance direction of any one of the chambers, and the wingless part is provided so as to face the delivery opening.
The developing device characterized in that the length in the developer conveying direction of the bladeless portion is 22.5% or more of the opening width of the delivery opening.

A latent image carrier for carrying a latent image;
An image forming apparatus comprising: a developing device that develops a toner image by attaching toner to the latent image on the latent image carrier;
An image forming apparatus using the developing device according to claim 1 as the developing device.

The image forming apparatus according to claim 7.
Transfer means for transferring the toner image on the latent image carrier to a transfer member;
Cleaning means for removing deposits adhering to the latent image carrier after transfer;
Toner replenishing means for replenishing toner to the developing device;
The toner replenishing means has a collected toner conveyance path for conveying the collected toner removed by the cleaning means,
The recovery toner conveying path is communicated with a waste toner bottle, and a waste toner transfer path for conveying the collected toner to the waste toner bottle, in communication with the supply toner carrying path of the developing device, the collected toner to the developing device Branch to the recovered toner supply route
An image forming apparatus comprising: a path selection unit that selectively guides the collected toner in the collected toner conveyance path to one of the collected toner supply path and the waste toner conveyance path.

In an image forming apparatus comprising a latent image carrier that carries a latent image and a developing unit that develops the latent image on the latent image carrier, at least the latent image carrier and the developing unit are shared as one unit. In a process cartridge configured to be held in a holding body and detachable integrally with the image forming apparatus main body,
7. A process cartridge using the developing device according to claim 1 as the developing means.