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JP4560390B2 - Toner replenishing device and developing device - Google Patents
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JP4560390B2 - Toner replenishing device and developing device - Google Patents

Toner replenishing device and developing device Download PDF

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JP4560390B2
JP4560390B2 JP2004352035A JP2004352035A JP4560390B2 JP 4560390 B2 JP4560390 B2 JP 4560390B2 JP 2004352035 A JP2004352035 A JP 2004352035A JP 2004352035 A JP2004352035 A JP 2004352035A JP 4560390 B2 JP4560390 B2 JP 4560390B2
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toner
toner replenishing
container
air
main body
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JP2006162809A (en
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正宏 渥美
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Ricoh Co Ltd
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Ricoh Co Ltd
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Description

本発明は、1成分現像装置、又は2成分現像装置へトナーを補給するトナー補給装置に関する。   The present invention relates to a toner replenishing device that replenishes toner to a one-component developing device or a two-component developing device.

電子写真式の画像形成装置本体に対して着脱自在に構成されたトナー補給容器と、トナー補給容器が画像形成装置本体に装着された状態で駆動されることにより、トナー補給容器内のトナーを攪拌しながらトナー補給容器外(現像装置)へ搬送する攪拌・搬送部材とを有するトナー補給装置においては、トナー補給容器の放置条件等により容器内のトナーの凝集が発生し、初期的に現像装置へトナー塊が供給されたり、トナー電気特性が不安定な状態で供給されたりすることによって、画像不良発生の可能性がある。
このような不具合を防止するために、例えば、特許文献1には、トナーホッパに通気孔を設け、初期使用時にトナー補給口シールをはがした時に、空気が流れ込みトナーをほぐすようにした技術が提案されている。
特開2002−139909公報
A toner supply container configured to be detachable from the electrophotographic image forming apparatus main body, and the toner in the toner supply container is agitated by being driven while the toner supply container is mounted on the image forming apparatus main body. However, in the toner replenishing device having a stirring / conveying member that conveys the toner replenishing container to the outside (developing device), the toner in the container agglomerates due to the leaving condition of the toner replenishing container, and is initially transferred to the developing device. If a toner lump is supplied or the toner electrical characteristics are supplied in an unstable state, image defects may occur.
In order to prevent such problems, for example, Patent Document 1 proposes a technique in which a vent hole is provided in a toner hopper so that air flows into the toner hopper when the toner supply port seal is peeled off during initial use. Has been.
JP 2002-139909 A

上述したように、初期使用時、空気でトナーをほぐす技術が提案されているが、従来の技術はトナー補給口シールをはがすだけであり、積極的に空気を取り入れることができず、空気によるトナーのほぐし効果が小さいという問題があった。
本発明は、空気の導入を前提として、空気によるトナーのほぐし効果を最大ならしめることができるトナー補給装置を提供することを目的とする。
As described above, a technique for loosening toner with air at the time of initial use has been proposed, but the conventional technique only peels off the toner replenishing port seal and cannot actively take in air. There was a problem that the unraveling effect was small.
SUMMARY OF THE INVENTION An object of the present invention is to provide a toner replenishing device capable of maximizing the toner loosening effect of air on the premise of introduction of air.

上記目的を達成するために、請求項1記載の発明は、画像形成装置本体に対して着脱自在に構成されたトナー補給容器と、トナー補給容器が画像形成装置本体に装着された状態で駆動されることによりトナー補給容器内のトナーを攪拌しながらトナー補給容器外へ搬送する攪拌・搬送部材とを有し、トナー補給容器内に空気が供給されるトナー補給装置において、トナー補給容器下部に空気吐出部材が配置されるトナー補給装置を特徴とする。
請求項2記載の発明は、請求項1記載のトナー補給装置において、画像形成装置本体内にあって、前記空気吐出部材と対向する個所に突起部が形成され、トナー補給容器の画像形成装置本体への装着動作によって、突起部と前記空気吐出部材が衝突して該空気吐出部材が圧縮されるトナー補給装置を特徴とする。
請求項3記載の発明は、請求項1記載のトナー補給装置において、前記空気吐出部材は、トナー補給容器の下部にあってトナー補給口付近に配置されるトナー補給装置を特徴とする。
請求項4記載の発明は、請求項1乃至3の何れか一項記載のトナー補給装置を備えた現像装置であって、前記空気吐出部材はトナー補給容器下部の長手方向に複数個位置される現像装置を特徴とする。
In order to achieve the above object, the invention described in claim 1 is driven with the toner supply container configured to be detachable from the image forming apparatus main body, and the toner supply container mounted on the image forming apparatus main body. and a stirring and conveying member for conveying the toner supply container out while stirring the toner in the toner replenishing container by Rukoto, the toner supply device air is supplied to the toner replenishing container, the air in the toner supply container bottom the toner supply device discharging member is disposed to feature.
According to a second aspect of the present invention, in the toner replenishing device according to the first aspect, a protrusion is formed at a location facing the air ejection member in the main body of the image forming apparatus, and the main body of the toner replenishing container. the mounting operation of the, the toner supply device air discharge member is compressed by colliding the air discharge member and the projection is a feature.
According to a third aspect of the invention, in the toner replenishing device of claim 1, wherein the air discharge member, a toner supply device In the lower part of the toner supply container is disposed in the vicinity of the toner replenishing port and feature.
According to a fourth aspect of the present invention , there is provided a developing device including the toner replenishing device according to any one of the first to third aspects , wherein a plurality of the air discharge members are positioned in a longitudinal direction below the toner replenishing container. a developing device to feature.

本発明のトナー補給装置は、トナー補給容器下部に空気吐出部材が配置され、画像形成装置本体内には、空気吐出部材と対向する個所に突起部が形成され、トナー補給容器の画像形成装置本体への装着動作によって、突起部と空気吐出部材が衝突して空気吐出部材が圧縮されるようになっているので、大量の空気を強制的にトナー補給容器内に送り込むことができ、このことによりトナー補給装置1の長手全域においてトナー凝集体の攪拌を行うことができる。 In the toner replenishing device of the present invention, an air discharge member is disposed below the toner replenishing container, and a protrusion is formed in the image forming apparatus main body at a location facing the air discharge member. Since the protrusion and the air discharge member collide with each other by the mounting operation, the air discharge member is compressed, so that a large amount of air can be forcibly fed into the toner supply container. The toner aggregate can be agitated in the entire longitudinal direction of the toner replenishing device 1.

以下、本発明の実施の形態を図面に従って説明する。
図1は現像装置に接続されるトナー補給装置の基本構成図である。トナー補給装置1は、トナー補給容器2内にアジテータ(攪拌・搬送部材)3を有する。そしてトナー補給口4から現像装置5内にトナーが補給されるようになっている。5aは図示しない感光体にトナーを供給する現像ローラである。
図2はトナー補給装置が画像形成装置本体に対し装着される様子を示す図である。トナー補給装置1は画像形成装置本体6に対して図2の矢印方向へ装着される。
図3は本発明の実施の形態に係るトナー補給装置の構成図である。本発明のトナー補給装置1は、トナー補給容器2の下部にあってトナー補給口4付近に空気ポンプ11(空気吐出部材)を備えている。そして空気ポンプ11からの空気供給により、現像装置5へ搬送される以前の凝集トナーを攪拌する。空気ポンプ11は、そのトナー補給容器2の一部を貫通すると共に、トナー補給容器の外部に一部を露出させている。
図4は空気ポンプの動作の説明図である。画像形成装置本体6内にあって、空気ポンプ11と対向する個所には突起部6−1が形成されている。トナー補給装置1の画像形成装置本体6への装着動作によって、突起部6−1と空気ポンプ11が衝突(干渉)し、空気ポンプ11が圧縮動作することで、トナー補給容器2内へ空気が供給(吐出)される。
図5は本発明の実施の形態に係るトナー補給装置における空気ポンプ配置図(側部断面図)である。トナー補給装置1の長手方向全域に渡って多数(或いは長尺)の空気ポンプ11を取り付ける。各ポンプの一部は容器の外部に露出しており、トナー補給装置装着時に、それぞれ対応する位置にある突起部に衝突することにより圧縮し、容器内部に空気を供給して、トナーを攪拌させる。このことによりトナー補給装置1の長手全域においてトナー凝集体の攪拌を行うことができる。
図6は画像形成装置本体に形成された突起部の形状例を示す図である。突起部6−1は、トナー補給装置1の画像形成装置本体6への装着を妨げないように装着方向へ向かって上方に傾斜する形状(1)または球形状(湾曲形状)(2)になっている。


Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a basic configuration diagram of a toner replenishing device connected to a developing device. The toner replenishing device 1 has an agitator (agitating / conveying member) 3 in a toner replenishing container 2. The toner is supplied from the toner supply port 4 into the developing device 5. A developing roller 5a supplies toner to a photosensitive member (not shown).
FIG. 2 is a diagram illustrating a state in which the toner replenishing device is attached to the image forming apparatus main body. The toner replenishing device 1 is attached to the image forming apparatus main body 6 in the direction of the arrow in FIG.
FIG. 3 is a configuration diagram of the toner supply device according to the embodiment of the present invention. The toner replenishing device 1 of the present invention is provided with an air pump 11 (air discharge member) near the toner replenishing port 4 below the toner replenishing container 2. Then, the aggregated toner before being conveyed to the developing device 5 is agitated by supplying air from the air pump 11. The air pump 11 penetrates part of the toner supply container 2 and exposes part of the toner supply container 2 to the outside.
FIG. 4 is an explanatory diagram of the operation of the air pump. In the image forming apparatus main body 6, a protrusion 6-1 is formed at a location facing the air pump 11. By the mounting operation of the toner replenishing device 1 on the image forming apparatus main body 6, the protrusion 6-1 and the air pump 11 collide (interfere), and the air pump 11 performs a compressing operation, so that air enters the toner replenishing container 2. Supply (discharge) .
FIG. 5 is a layout diagram (side sectional view) of the air pump in the toner replenishing device according to the embodiment of the present invention. A large number (or long) of air pumps 11 are attached over the entire length of the toner replenishing device 1. A part of each pump is exposed to the outside of the container, and when the toner replenishing device is installed, the pump is compressed by colliding with a protrusion at a corresponding position, and air is supplied into the container to stir the toner. . This makes it possible to stir the toner aggregate throughout the entire length of the toner replenishing device 1.
FIG. 6 is a diagram showing an example of the shape of the protrusion formed on the image forming apparatus main body. The protrusion 6-1 has a shape (1) or a spherical shape (curved shape) (2) that is inclined upward in the mounting direction so as not to prevent the toner supply device 1 from being mounted on the image forming apparatus main body 6. ing.


現像装置に接続されるトナー補給装置の基本構成図。FIG. 3 is a basic configuration diagram of a toner replenishing device connected to a developing device. トナー補給装置が画像形成装置本体に対し装着される様子を示す図。FIG. 4 is a diagram illustrating a state in which the toner replenishing device is attached to the image forming apparatus main body. 本発明の実施の形態に係るトナー補給装置の構成図。1 is a configuration diagram of a toner supply device according to an embodiment of the present invention. 空気ポンプの動作の説明図。Explanatory drawing of operation | movement of an air pump. 本発明の実施の形態に係るトナー補給装置における空気ポンプ配置図。FIG. 3 is a layout diagram of air pumps in the toner replenishing device according to the embodiment of the invention. 画像形成装置本体に形成された突起部の形状例を示す図。FIG. 4 is a diagram illustrating an example of the shape of a protrusion formed on the image forming apparatus main body.

符号の説明Explanation of symbols

1 トナー補給装置、2 トナー補給容器、3 アジテータ(攪拌・搬送部材)、4 トナー補給口、5 現像装置、6 画像形成装置本体、6−1 突起部、11 空気ポンプ DESCRIPTION OF SYMBOLS 1 Toner replenishment apparatus, 2 Toner replenishment container, 3 Agitator (stirring / conveying member), 4 Toner replenishment port, 5 Developing apparatus, 6 Image forming apparatus main body, 6-1 Protrusion part, 11 Air pump

Claims (4)

画像形成装置本体に対して着脱自在に構成されたトナー補給容器と、トナー補給容器が画像形成装置本体に装着された状態で駆動されることによりトナー補給容器内のトナーを攪拌しながらトナー補給容器外へ搬送する攪拌・搬送部材とを有し、トナー補給容器内に空気が供給されるトナー補給装置において、トナー補給容器下部に空気吐出部材が配置されることを特徴とするトナー補給装置。 A toner supply container configured to be detachable from the image forming apparatus main body, and the toner supply container while stirring the toner in the toner supply container by being driven while the toner supply container is mounted on the image forming apparatus main body A toner replenishing device having an agitating / conveying member for conveying to the outside, wherein air is supplied into the toner replenishing container, wherein an air discharge member is disposed below the toner replenishing container. 請求項1記載のトナー補給装置において、画像形成装置本体内にあって、前記空気吐出部材の移動経路に相当する箇所には突起部が形成され、トナー補給容器の画像形成装置本体への装着動作によって、突起部と前記空気吐出部材が衝突して該空気吐出部材が圧縮されて空気をトナー補給容器内に供給することを特徴とするトナー補給装置。 2. The toner replenishing device according to claim 1, wherein a protrusion is formed at a position corresponding to a movement path of the air discharge member in the image forming apparatus main body, and the toner replenishing container is mounted on the image forming apparatus main body. Thus, the protrusion and the air discharge member collide, the air discharge member is compressed, and air is supplied into the toner supply container. 請求項1記載のトナー補給装置において、前記空気吐出部材は、前記トナー補給容器の下部にあってトナー補給口付近に配置されることを特徴とするトナー補給装置。 The toner replenishing device according to claim 1, wherein the air discharge member is disposed in a lower portion of the toner replenishing container and in the vicinity of a toner replenishing port. 請求項1乃至3の何れか一項記載のトナー補給装置を備えた現像装置であって、前記空気吐出部材はトナー補給容器下部の長手方向に複数個位置されること特徴とする現像装置。 A developing device including a toner replenishing device according to any of claims 1 to 3, the air discharge member developing apparatus is characterized by being a plurality positions in the longitudinal direction of toner supply container bottom.
JP2004352035A 2004-12-03 2004-12-03 Toner replenishing device and developing device Expired - Fee Related JP4560390B2 (en)

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JP5293049B2 (en) * 2008-09-25 2013-09-18 富士ゼロックス株式会社 Developer supply container, removable image forming unit, and image forming apparatus

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