Toner supply device
First Claim
1. A image forming device comprising:
- a toner container being configured to contain toner;
an image bearing member having a surface being configured to have an electrostatic image formed thereon;
a developing device havinga plurality of developing units being located corresponding to different developing colors, anda rotary frame maintaining the developing units in a circumferential direction in order to place each of the developing units opposite the image bearing member via rotation; and
a toner supply device being configured to supply toner contained in the toner container to the developing device, the toner supply device havinga conveyance pipe being connected to the toner container, the conveyance pipe conveying the toner from the toner container to the developing device,at least one supply pipe being configured to supply the toner from the conveyance pipe downward to the developing device, the at least one supply pipe having an upper portion connected to the conveyance pipe and a lower end configured to advance into the developing device, the at least one supply pipe having a center axis of the supply pipe slanted relative to the horizontal line at a repose angle of the toner or more, the supply pipes being located to correspond to the developing units, anda conveyance member being rotatably located in the supply pipe, the conveyance member conveying the toner downward.
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Accused Products
Abstract
A toner supply device is disclosed that supplies toner contained in a toner container to a developing device in an image forming device. The toner supply device includes a conveyance pipe for conveying the toner from the toner container to the developing device downward, and at least one supply pipe for supplying the toner from the conveyance pipe to the developing device downward. The conveyance pipe is connected to the toner container for conveying the toner from the toner container to the developing device. The supply pipe has an upper portion connected to the conveyance pipe and a lower end capable of advancing into the developing device. In addition, a conveyance member is rotatably located in the supply pipe for conveying the toner downward. The supply pipe is located such that a center axis of the supply pipe is slanted relative to the horizontal line at a repose angle of the toner or more.
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Citations
13 Claims
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1. A image forming device comprising:
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a toner container being configured to contain toner; an image bearing member having a surface being configured to have an electrostatic image formed thereon; a developing device having a plurality of developing units being located corresponding to different developing colors, and a rotary frame maintaining the developing units in a circumferential direction in order to place each of the developing units opposite the image bearing member via rotation; and a toner supply device being configured to supply toner contained in the toner container to the developing device, the toner supply device having a conveyance pipe being connected to the toner container, the conveyance pipe conveying the toner from the toner container to the developing device, at least one supply pipe being configured to supply the toner from the conveyance pipe downward to the developing device, the at least one supply pipe having an upper portion connected to the conveyance pipe and a lower end configured to advance into the developing device, the at least one supply pipe having a center axis of the supply pipe slanted relative to the horizontal line at a repose angle of the toner or more, the supply pipes being located to correspond to the developing units, and a conveyance member being rotatably located in the supply pipe, the conveyance member conveying the toner downward. - View Dependent Claims (8)
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2. A toner supply device configured to supply toner contained in a toner container to a developing device in an image forming device, comprising:
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a conveyance pipe being connected to the toner container, the conveyance pipe conveying the toner from the toner container to the developing device; at least one supply pipe being configured to supply the toner from the conveyance pipe downward to the developing device, the at least one supply pipe having an upper portion connected to the conveyance pipe and a lower end configured to advance into the developing device, the at least one supply pipe having a center axis of the supply pipe slanted relative to the horizontal line at a repose angle of the toner or more, the at least one supply pipe having a shutter mechanism prohibiting and allowing the toner to be supplied to the developing device; and a conveyance member being rotatably located in the supply pipe, the conveyance member conveying the toner downward. - View Dependent Claims (3, 4, 5, 6, 7)
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9. An image forming device comprising;
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an image forming unit being configured to forming a toner image and being configured to transfer the toner image onto a transfer medium; a sheet conveyance unit being configured to convey the transfer medium to the image forming unit; and a toner supply unit being configured to supply toner to the image forming unit, the toner supply unit including a toner supply member being configured to supply toner to the image forming unit, a toner container being configured to store toner, and a toner conveyance unit having a toner conveyance member inside being configured to convey the toner in the toner container to the toner supply member, the toner conveyance unit having a portion upstream in a toner conveyance direction that is lower than a portion thereof that is downstream in the toner conveyance direction. - View Dependent Claims (10, 11, 12, 13)
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Specification