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US 2019/0101849 A1Published application
Developing apparatus and process cartridge
AssigneeCanon Kabushiki Kaisha
InventorsHideki Maeshima, Shuichi Gofuku, Soichi Ishii
Life of this patent
Estimating the term…
Abstract
A second conveying member is disposed upstream of a first conveying member in a rotation direction of a conveyance shaft in a state in which a fixed end of the second conveying member and a fixed end of the first conveying member overlap each other. In a first position, a second position, and a third position that sequentially distance away from a drive transmission member in an axial direction of the conveyance shaft, a free end of the first conveying member and a free end of the second conveying member sequentially becomes larger as well.
Claims18
A developing apparatus comprising:
- a developing portion that accommodates a developer carrying member that carries developer;
- a developer accommodating portion disposed below the developing portion, the developer accommodating portion accommodating the developer;
- a conveyance shaft provided in the developer accommodating portion, the conveyance shaft being capable of conveying the developer accommodated in the developer accommodating portion and being rotatable in a predetermined rotation direction;
- a drive transmission member which is provided on the developer accommodating portion and which is connected to one end of the conveyance shaft in an axial direction of the conveyance shaft, the drive transmission member rotating the conveyance shaft by receiving driving force from outside;
- a first conveying member, having a first end thereof being a fixed end attached to the conveyance shaft and a second end thereof being a free end;
- and
- a second conveying member, having a first end thereof being a fixed end attached to the conveyance shaft, and a second end thereof being a free end, and a length between the fixed end and the free end of the second conveying member being shorter than that of the first conveying member,
- wherein the second conveying member is disposed upstream of the first conveying member in a rotation direction of the conveyance shaft in a state in which the fixed end of the second conveying member and the fixed end of the first conveying member overlap each other, and
- wherein in a first position, a second position, and a third position that sequentially distance away from the drive transmission member in the axial direction of the conveyance shaft, a distance between the free end of the first conveying member and the free end of the second conveying member sequentially becomes larger as well.
6 more elements
A developing apparatus comprising:
- a developing portion that accommodates a developer carrying member that carries developer;
- a developer accommodating portion disposed below the developing portion, the developer accommodating portion accommodating the developer;
- a conveyance shaft provided in the developer accommodating portion, the conveyance shaft being capable of conveying the developer accommodated in the developer accommodating portion and being rotatable in a predetermined rotation direction;
- a drive transmission member which is provided on the developer accommodating portion and which is connected to one end of the conveyance shaft in an axial direction of the conveyance shaft, the drive transmission member rotating the conveyance shaft by receiving driving force from outside;
- a first conveying member, having a first end thereof being a fixed end attached to the conveyance shaft and a second end thereof being a free end;
- and
- a second conveying member, having a first end thereof being a fixed end attached to the conveyance shaft, and a second end thereof being a free end, and a length between the fixed end and the free end of the second conveyance member being shorter than that of the first conveying member,
- wherein the second conveying member is disposed upstream of the first conveying member in a rotation direction of the conveyance shaft in a state in which the fixed end of the second conveying member and the fixed end of the first conveying member overlap each other, and
- wherein in a position closest to the drive transmission member and a position farthest away from the drive transmission member in the axial direction of the conveyance shaft, a distance between the free end of the first conveying member and the free end of the second conveying member is larger at the position farthest away than at the position closest.
6 more elements
A process cartridge detachably attachable to a main body of an image forming apparatus that forms an image, the process cartridge comprising:
- a developing apparatus including:
- a developing portion that accommodates a developer carrying member that carries developer;
- a developer accommodating portion disposed below the developing portion, the developer accommodating portion accommodating the developer;
- a conveyance shaft provided in the developer accommodating portion, the conveyance shaft being capable of conveying the developer accommodated in the developer accommodating portion and being rotatable in a predetermined rotation direction;
- a drive transmission member which is provided on the developer accommodating portion and which is connected to one end of the conveyance shaft in an axial direction of the conveyance shaft, the drive transmission member rotating the conveyance shaft by receiving driving force from outside;
- a first conveying member, having a first end thereof being a fixed end attached to the conveyance shaft and a second end thereof being a free end;
- and
- a second conveying member, having a first end thereof being a fixed end attached to the conveyance shaft, and a second end thereof being a free end, and a length between the fixed end and the free end of the second conveying member being shorter than that of the first conveying member,
- wherein the second conveying member is disposed upstream of the first conveying member in a rotation direction of the conveyance shaft in a state in which the fixed end of the second conveying member and the fixed end of the first conveying member overlap each other, and
- wherein in a first position, a second position, and a third position that sequentially distance away from the drive transmission member in the axial direction of the conveyance shaft, a distance between the free end of the first conveying member and the free end of the second conveying member sequentially becomes larger as well;
- and
- an image carrying member that carries an electrostatic latent image,
- wherein the electrostatic latent image carried on the image carrying member is developed with the developing apparatus.
10 more elements
A process cartridge detachably attachable to a main body of an image forming apparatus that forms an image, the process cartridge comprising:
- a developing apparatus including:
- a developing portion that accommodates a developer carrying member that carries developer;
- a developer accommodating portion disposed below the developing portion, the developer accommodating portion accommodating the developer;
- a conveyance shaft provided in the developer accommodating portion, the conveyance shaft being capable of conveying the developer accommodated in the developer accommodating portion and being rotatable in a predetermined rotation direction;
- a drive transmission member which is provided on the developer accommodating portion and which is connected to one end of the conveyance shaft in an axial direction of the conveyance shaft, the drive transmission member rotating the conveyance shaft by receiving driving force from outside;
- a first conveying member, having a first end thereof being a fixed end attached to the conveyance shaft and a second end thereof being a free end;
- and
- a second conveying member, having a first end thereof being a fixed end attached to the conveyance shaft, and a second end thereof being a free end, and a length between the fixed end and the free end of the second conveyance member being shorter than that of the first conveying member,
- wherein the second conveying member is disposed upstream of he first conveying member in a rotation direction of the conveyance shaft in a state in which the fixed end of the second conveying member and the fixed end of the first conveying member overlap each other, and
- wherein in a position closest to the drive transmission member and a position farthest away from the drive transmission member in the axial direction of the conveyance shaft, a distance between the free end of the first conveying member and the free end of the second conveying member is larger at the position farthest away than at the position closest;
- and
- an image carrying member that carries an electrostatic latent image,
- wherein the electrostatic latent image carried on the image carrying member is developed with the developing apparatus.
10 more elements
Dependencies are inferred from the claim text.