JPH03112764U - - Google Patents
Info
- Publication number
- JPH03112764U JPH03112764U JP2141990U JP2141990U JPH03112764U JP H03112764 U JPH03112764 U JP H03112764U JP 2141990 U JP2141990 U JP 2141990U JP 2141990 U JP2141990 U JP 2141990U JP H03112764 U JPH03112764 U JP H03112764U
- Authority
- JP
- Japan
- Prior art keywords
- toner
- carrier
- changing means
- toner carrier
- developing device
- 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.)
- Pending
Links
Landscapes
- Dry Development In Electrophotography (AREA)
Description
第１図は本考案の実施例の現像装置の概略断面
図、第２図はその現像時の状態を示す側面図、第
３図はその非現像時の側面図、第４図はその外形
斜視図、第５図は複数の現像器を備えた他の実施
例の現像装置の説明図である。
１……潜像担持体、２２……トナー担持体、２
４……トナー層規制ブレート（トナー層規制部材
）、２１−１……現像容器上部（第２変更手段）
、３０……ばね機構（第２変更手段）、３２……
保持部材（第１変更手段）、３３−１……ソレノ
イド（第１変更手段）、３３−２……伝達部材（
第１変更手段）、３４……ブレード圧接部材（第
２変更手段）、３５，３６……ストツパー（第１
変更手段）。
Fig. 1 is a schematic sectional view of a developing device according to an embodiment of the present invention, Fig. 2 is a side view showing its state during development, Fig. 3 is a side view thereof when not developing, and Fig. 4 is a perspective view of its external appearance. FIG. 5 is an explanatory diagram of another embodiment of a developing device including a plurality of developing units. 1...Latent image carrier, 22...Toner carrier, 2
4... Toner layer regulating plate (toner layer regulating member), 21-1... Upper part of developer container (second changing means)
, 30... Spring mechanism (second changing means), 32...
Holding member (first changing means), 33-1... Solenoid (first changing means), 33-2... Transmitting member (
(first changing means), 34... Blade pressure contact member (second changing means), 35, 36... Stopper (first
means of change).
Claims (1)
体と該トナー担持体に圧接してトナーを薄層化す
るトナー層規制部材とを有し、画像を形成する画
像形成装置の潜像担持体に前記トナー担持体を圧
接させ該潜像担持体に形成された静電荷像をトナ
ーで現像する現像装置において、 前記潜像担持体と前記トナー担持体とが、現像
時には圧接し、非現像時には離間するか又は圧接
力が減少した位置になるように、前記潜像担持体
と前記トナー担持体との関係位置を変更する第１
変更手段と、 前記トナー担持体と前記トナー層規制部材とが
、現像時には圧接し、非現像時には離間するか又
は圧接力が減少した位置になるように、前記トナ
ー担持体と前記トナー層規制部材との関係位置を
変更する第２変更手段と、 を設けたことを特徴とする現像装置。 (2) 前記第１変更手段は、前記トナー担持体の
位置を変更し、前記第２変更手段は、前記トナー
担持体の位置の変更に対応して作動し前記トナー
層規制部材の位置を変更することを特徴とする、 請求項１に記載の現像装置。[Claims for Utility Model Registration] (1) A toner carrier having elasticity that supports toner and a toner layer regulating member that presses against the toner carrier to thin the toner to form an image. In a developing device that presses the toner carrier against a latent image carrier of an image forming apparatus and develops an electrostatic charge image formed on the latent image carrier with toner, the latent image carrier and the toner carrier are A first step of changing the relative position between the latent image carrier and the toner carrier so that they are in pressure contact during development and are separated or have a reduced pressure contact force during non-development.
a changing means, the toner carrier and the toner layer regulating member are arranged so that the toner carrier and the toner layer regulating member are in pressure contact during development, and are separated or in a position where the pressure contact force is reduced during non-development; A developing device comprising: second changing means for changing a position relative to the developing device. (2) The first changing means changes the position of the toner carrier, and the second changing means operates in response to the change in the position of the toner carrier and changes the position of the toner layer regulating member. The developing device according to claim 1, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2141990U JPH03112764U (en) | 1990-03-05 | 1990-03-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2141990U JPH03112764U (en) | 1990-03-05 | 1990-03-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03112764U true JPH03112764U (en) | 1991-11-18 |
Family
ID=31524467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2141990U Pending JPH03112764U (en) | 1990-03-05 | 1990-03-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03112764U (en) |
-
1990
- 1990-03-05 JP JP2141990U patent/JPH03112764U/ja active Pending