JPH08194427A - Developing device for image recording apparatus - Google Patents
Developing device for image recording apparatusInfo
- Publication number
- JPH08194427A JPH08194427A JP7003815A JP381595A JPH08194427A JP H08194427 A JPH08194427 A JP H08194427A JP 7003815 A JP7003815 A JP 7003815A JP 381595 A JP381595 A JP 381595A JP H08194427 A JPH08194427 A JP H08194427A
- Authority
- JP
- Japan
- Prior art keywords
- developing device
- developing
- image
- unit
- developing roll
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Landscapes
- Discharging, Photosensitive Material Shape In Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
- Electrophotography Configuration And Component (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、画像記録装置の現像装
置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a developing device for an image recording device.
【０００２】[0002]
【従来の技術】レーザプリンタや複写機などの画像記録
装置において、感光ドラムとその周囲に配置される装置
（例えば、帯電器、現像装置、清掃装置など）を種々の
組み合わせで一体に設ける技術は、例えば実開昭６２−
１８６１５３号公報、実開昭６３−２９５５号公報、実
開平１−９００４６号公報または実開平５−６４５９号
公報により知られている。2. Description of the Related Art In an image recording apparatus such as a laser printer or a copying machine, there is a technique in which a photosensitive drum and a device (for example, a charger, a developing device, a cleaning device) arranged around the photosensitive drum are integrally provided in various combinations. , For example, 62-
No. 186153, No. 63-2955, No. 1-90046, or No. 5-6459.
【０００３】[0003]
【発明が解決しようとする課題】この種のユニットにお
いては、そのユニットの中で最も寿命の短い部品または
装置の周期にあわせてユニットが交換されているので、
寿命に達していない（交換不必要）な部品や装置までも
が一緒に交換されてしまうことになり、ランニングコス
トを高くしてしまうという問題がある。In this type of unit, since the unit is replaced in accordance with the cycle of the component or device having the shortest life in the unit,
Even parts and devices that have not reached the end of their life (replacement unnecessary) will be replaced together, which raises the problem of increasing running costs.
【０００４】本発明の目的は、寿命のほぼ等しい部品を
ユニット化することにより、ランニングコストが低減さ
れる画像記録装置の現像装置を提供することにある。An object of the present invention is to provide a developing device for an image recording apparatus in which running costs are reduced by unitizing parts having substantially the same life.
【０００５】[0005]
【課題を解決するための手段】上記目的は、現像ロール
を支持する支持部と像担持体を支持する支持部とを一体
に設けてなる現像ロールユニットを、現像装置に対し着
脱可能に設けることにより達成される。SUMMARY OF THE INVENTION It is an object of the present invention to provide a developing roll unit which is integrally provided with a supporting portion for supporting a developing roll and a supporting portion for supporting an image carrier so as to be detachable from a developing device. Achieved by
【０００６】[0006]
【作用】上記構成によれば、現像ロールが寿命に達した
場合でも、現像装置全体を交換する必要がなければ、現
像ロールユニットのみの交換で足りることになり、ユー
ザのコスト負担が軽減される。また、現像ロールと寿命
のほぼ等しい像担持体についても同時に交換が行われる
ので、作業効率などユニットの長所が損なわれることも
ない。According to the above construction, even if the developing roll reaches the end of its life, if it is not necessary to replace the entire developing device, it is sufficient to replace only the developing roll unit, and the user's cost burden is reduced. . Further, since the image bearing member having a life substantially equal to that of the developing roller is also replaced at the same time, advantages of the unit such as working efficiency are not deteriorated.
【０００７】[0007]
【実施例】以下、本発明の実施例を図１、図２を参照し
ながら説明する。図において、１は像担持体となる感光
ドラムである。感光ドラム１は現像ロールユニット２を
構成するハウジング２ａに覆われるように設けられ、感
光ドラム１の回転軸１ａがハウジング２ａの側板（図示
せず）に回転可能に支持されている。また、現像ロール
３もハウジング２ａによって一部が覆われるように設け
られ、現像ロール３の回転軸３ａがハウジング２ａの側
板（図示せず）に回転可能に支持されている。さらに、
ハウジング２ａ側面には、現像装置４に設けた係止部４
ａ、４ｂに係合する係止部２ｂ、２ｃが設けられてい
る。以上のように現像ロールユニット２は、感光ドラム
１と現像ロール３がハウジング２ａにより一体に構成さ
れている。Embodiments of the present invention will be described below with reference to FIGS. In the figure, reference numeral 1 is a photosensitive drum which serves as an image carrier. The photosensitive drum 1 is provided so as to be covered by a housing 2a that constitutes the developing roll unit 2, and a rotary shaft 1a of the photosensitive drum 1 is rotatably supported by a side plate (not shown) of the housing 2a. The developing roll 3 is also provided so as to be partially covered by the housing 2a, and the rotation shaft 3a of the developing roll 3 is rotatably supported by a side plate (not shown) of the housing 2a. further,
On the side surface of the housing 2a, a locking portion 4 provided on the developing device 4 is provided.
Locking portions 2b and 2c that engage with a and 4b are provided. As described above, in the developing roll unit 2, the photosensitive drum 1 and the developing roll 3 are integrally formed by the housing 2a.
【０００８】なお、図において、５は感光ドラム１表面
を均一に帯電する帯電器、６は感光ドラム１に電荷潜像
を形成するレーザ光、７は現像装置４内の現像剤８が漏
れないようにハウジング２と現像装置４の間をシールす
るシール部材、９は現像装置４内の現像剤８を現像ロー
ル３に搬送する搬送ロールである。In the figure, 5 is a charger for uniformly charging the surface of the photosensitive drum 1, 6 is a laser beam for forming a latent charge image on the photosensitive drum 1, and 7 is a developer 8 in the developing device 4 without leaking. As described above, a seal member that seals between the housing 2 and the developing device 4 is a conveying roll 9 that conveys the developer 8 in the developing device 4 to the developing roll 3.
【０００９】[0009]
【発明の効果】本発明によれば、現像ロールを支持する
支持部と像担持体を支持する支持部とを一体に設けてな
る現像ロールユニットを、現像装置に対し着脱可能に設
けたので、現像ロールが寿命に達した場合でも、現像装
置全体を交換する必要がなければ現像ロールユニットの
みの交換で足り、ユーザのコスト負担を軽減できる。According to the present invention, the developing roll unit, which is integrally provided with the supporting portion for supporting the developing roll and the supporting portion for supporting the image carrier, is detachably attached to the developing device. Even when the developing roll reaches the end of its life, it is sufficient to replace only the developing roll unit if it is not necessary to replace the entire developing device, and the user's cost burden can be reduced.
【図１】 本発明の現像ロールユニットを現像装置に装
着した状態を示す側面図である。FIG. 1 is a side view showing a state in which a developing roll unit of the present invention is attached to a developing device.
【図２】 本発明の現像ロールユニットの側面図であ
る。FIG. 2 is a side view of the developing roll unit of the present invention.
Claims (1)
え、前記現像ロールによって像担持体に形成された電荷
潜像に現像剤を供給して、像担持体上に現像像を形成す
る現像装置において、 前記現像ロールを支持する支持部と前記像担持体を支持
する支持部とを一体に設けてなる現像ロールユニット
を、現像装置に対し着脱可能に設けたことを特徴とする
画像記録装置の現像装置。1. A developing device comprising a developing roll rotatably supported, and supplying a developer to a charge latent image formed on the image bearing member by the developing roll to form a developed image on the image bearing member. In the image recording apparatus, a developing roll unit, which integrally includes a supporting portion that supports the developing roll and a supporting portion that supports the image carrier, is detachably attached to the developing device. Development device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7003815A JPH08194427A (en) | 1995-01-13 | 1995-01-13 | Developing device for image recording apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7003815A JPH08194427A (en) | 1995-01-13 | 1995-01-13 | Developing device for image recording apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08194427A true JPH08194427A (en) | 1996-07-30 |
Family
ID=11567692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7003815A Withdrawn JPH08194427A (en) | 1995-01-13 | 1995-01-13 | Developing device for image recording apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08194427A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007057865A (en) * | 2005-08-25 | 2007-03-08 | Samsung Electronics Co Ltd | Image forming apparatus and process cartridge mounted on the same |
-
1995
- 1995-01-13 JP JP7003815A patent/JPH08194427A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007057865A (en) * | 2005-08-25 | 2007-03-08 | Samsung Electronics Co Ltd | Image forming apparatus and process cartridge mounted on the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20020402 |