JP2011237714A5

JP2011237714A5 -

Info

Publication number: JP2011237714A5
Application number: JP2010110888A
Authority: JP
Filing date: 2010-05-13
Publication date: 2013-06-27
Anticipated expiration: 2030-05-13

Description

本発明は、このような事情に鑑み、シートなどのカバー部材と現像剤担持体との摺擦抵抗を低減して、カバー部材の耐久寿命の低下を抑えられることができる構造を実現すべく発明したものである。 In view of such circumstances, the present invention is designed to realize a structure capable of reducing the sliding resistance between a cover member such as a sheet and a developer carrying member and suppressing a decrease in the durable life of the cover member. It is a thing.

本発明は、非磁性のトナーと磁性を有するキャリアとから構成される２成分現像剤を収容する現像容器と、前記現像容器の像担持体に対向する位置に配置され、前記現像剤を担持搬送する現像剤担持体と、前記現像容器から前記現像剤が漏れることを抑制するために、前記現像剤担持体の前記像担持体と対向する一部を覆うように配置されるカバー部材と、を備え、前記カバー部材と前記現像剤担持体との間に、装置の初期駆動前にトナーを介在させる処理を施した、ことを特徴とする現像装置にある。 The present invention is disposed in a developer container containing a two-component developer composed of a non-magnetic toner and a magnetic carrier, and disposed at a position facing the image carrier of the developer container, and carries and transports the developer. And a cover member disposed so as to cover a part of the developer carrier facing the image carrier in order to prevent the developer from leaking from the developer container. The developing device is characterized in that a process for interposing toner is performed between the cover member and the developer carrying member before the initial driving of the device .

本発明によれば、カバー部材と現像剤担持体との間に、装置の初期駆動前にトナーを介在させる処理を施しているため、カバー部材と現像剤担持体との摺擦抵抗を低減し、カバー部材の耐久寿命の低下を抑えられる。 According to the present invention, since the toner is interposed between the cover member and the developer carrier before the initial driving of the apparatus, the frictional resistance between the cover member and the developer carrier is reduced. And the fall of the durable life of a cover member can be suppressed.

また、本実施形態の場合、シート７０の現像スリーブ４１、４３と対向する面７２に、予め（装置の初期駆動前に）トナーを塗布している。これにより、シート７０の面７２に形成した凹凸にトナーを担持させ、シート７０を現像容器４０の所定位置に配置した状態で、現像スリーブ４１、４３とシート７０との間にトナーが介在するようにしている。言い換えれば、シート７０と現像スリーブ４１、４３との間に、予めトナーを介在させる処理を施している。なお、シート７０が対向するのは現像スリーブ４１、４３の非担持部４１ｂ、４３ｂであるため、この非担持部４１ｂ、４３ｂにも予めトナーを塗布するようにしても良い。また、このように塗布するトナーとしては、使用されるステーションの色に応じたものとすることが好ましいが、トナーを塗布する段階でどのステーションに使用されるかが分からない場合には、無色のクリアトナーを使用することが好ましい。 In the case of the present embodiment, toner is applied in advance (before the initial driving of the apparatus) to the surface 72 of the sheet 70 facing the developing sleeves 41 and 43. As a result, the toner is carried on the unevenness formed on the surface 72 of the sheet 70, and the toner is interposed between the developing sleeves 41 and 43 and the sheet 70 in a state where the sheet 70 is disposed at a predetermined position of the developing container 40. I have to. In other words, a process of interposing toner is performed between the sheet 70 and the developing sleeves 41 and 43 in advance. Since the sheet 70 faces the non-carrying portions 41b and 43b of the developing sleeves 41 and 43, the toner may be applied to the non-carrying portions 41b and 43b in advance. Further, it is preferable that the toner to be applied in accordance with the color of the station to be used. It is preferable to use a clear toner.

また、本実施形態の場合、予めシート７０にトナーを塗布して、現像スリーブ４１、４３とシート７０との間にトナーを介在させているため、上述のように現像装置４の稼動により金環部に付着するトナーが少ない初期状態でも、摺擦抵抗を低減できる。即ち、初期状態（製品出荷時など、装置の初期駆動前）では、トナーが非担持部４１ｂ、４３ｂとシート７０との間にまで搬送されないため、トナーを塗布していなければ、この間部分にトナーがない状態で運転されることになる。そして、現像スリーブ４１、４３とシート７０との摺擦抵抗が大きくなって、シート７０が受けるダメージが大きくなってしまう。これに対して、本実施形態のように初期状態でトナーが存在すれば、このようなシート７０のダメージを低減できる。
In the case of this embodiment, since the toner is applied to the sheet 70 in advance and the toner is interposed between the developing sleeves 41 and 43 and the sheet 70, the annular portion is caused by the operation of the developing device 4 as described above. The rubbing resistance can be reduced even in the initial state where the amount of toner adhering to the toner is small. That is, in the initial state (when the product is shipped, for example , before the initial driving of the apparatus ), the toner is not conveyed between the non-carrying portions 41b and 43b and the sheet 70. It will be operated in the state without. Then, the rubbing resistance between the developing sleeves 41 and 43 and the sheet 70 increases, and the damage received by the sheet 70 increases. On the other hand, if the toner is present in the initial state as in the present embodiment, such damage to the sheet 70 can be reduced.

Claims

A developer container containing a two-component developer composed of a non-magnetic toner and a magnetic carrier;
A developer carrier that is disposed at a position facing the image carrier of the developer container and carries the developer; and
A cover member arranged to cover a part of the developer carrying member facing the image carrier in order to prevent the developer from leaking from the developer container,
Between the cover member and the developer carrier, a process of interposing toner before the initial driving of the apparatus was performed.
A developing device.

The toner interposed between the cover member and the developer carrier is a colorless toner.
The developing device according to claim 1.

The developer carrier is composed of a pair of developer carriers arranged parallel to each other and with a gap in the rotation direction of the image carrier,
The pair of developer carrying members each have a carrying part carrying the developer and a non-carrying part that is less likely to carry the developer than the carrying part.
The cover member is disposed so as to cover at least a gap between the non-carrying portions of the pair of developer carrying members.
The developing device according to claim 1, wherein

In an image forming apparatus comprising: an image carrier; and a developing device that develops an electrostatic latent image formed on the image carrier.
The developing device is the developing device according to any one of claims 1 to 3.
An image forming apparatus.