JP2015011288A5

JP2015011288A5 -

Info

Publication number: JP2015011288A5
Application number: JP2013138422A
Authority: JP
Filing date: 2013-07-01
Publication date: 2016-06-30
Anticipated expiration: 2033-07-01

Description

請求項１の発明は、第１粉体と磁性を有する第２粉体との混合体を搬送し、路幅を拡大する拡大部を有する搬送路と、前記第１粉体を前記拡大部に供給する供給口と、前記搬送路内の前記混合体の粉面よりも一部が下方に位置するように前記拡大部内に設けられ、前記粉面よりも上方に磁力を発揮する磁力発揮域を有し、前記混合体が設定高さよりも増加すると前記搬送路内の混合体を前記磁力発揮域によって自らの外周に保持しながら自転し、且つ、自転により当該混合体を前記供給口に搬送して当該混合体で前記供給口を塞ぐ磁性部材と、を備える。 According to the first aspect of the present invention, there is provided a conveying path having an enlarged portion that conveys a mixture of the first powder and the magnetic second powder, and enlarges a path width, and the first powder is used as the enlarged portion. A supply port to be supplied, and a magnetic force exerting region that is provided in the enlarged portion so that a part thereof is located below the powder surface of the mixture in the transport path and that exerts a magnetic force above the powder surface. And when the mixture increases above a set height, the mixture in the conveyance path rotates while being held on its outer periphery by the magnetic force exerting region, and the mixture is conveyed to the supply port by rotation. And a magnetic member for closing the supply port with the mixture.

Claims

A conveying path having an enlarged portion that conveys a mixture of the first powder and the magnetic second powder and expands the path width;
A supply port for supplying the first powder to the enlarged portion ;
Provided in the enlarged portion so that a part thereof is located below the powder surface of the mixture in the conveyance path, and has a magnetic force exerting region that exerts a magnetic force above the powder surface, and the mixture Increases above the set height, the mixture in the conveyance path rotates while being held on its outer periphery by the magnetic force exerting region, and the mixture is conveyed to the supply port by rotation and the mixture is used as the mixture. A magnetic member that closes the supply port;
A powder conveying apparatus comprising:

Further comprising an opening for discharging the first powder outside the conveying path;
The powder conveyance device according to claim 1, wherein the magnetic member conveys the first powder supplied from the supply port to the conveyance path when a powder surface of the mixture is equal to or lower than the set height. .

The powder conveyance device according to claim 1 or 2, wherein the enlargement unit is provided so as to enlarge the path width in a part in the conveyance direction of the mixture as compared with the other part.

The powder conveying apparatus according to any one of claims 1 to 3, wherein the rotating shaft portion of the magnetic member is disposed above the set height.

The first powder is toner;
The second powder is a carrier;
The mixture is a developer;
A developing member that is provided so as to be partially exposed from the opening, and that develops a latent image on the image holding member by holding the developer by a magnetic force different from the magnetic member;
The developing device as a powder conveying device according to any one of claims 2 and 3, wherein the second embodiment is referred to, and the second embodiment is referred to .

An image carrier,
The developing device according to claim 5, which develops a latent image of the image carrier.
An image forming apparatus comprising: