JPH03112760U - - Google Patents
Info
- Publication number
- JPH03112760U JPH03112760U JP1957390U JP1957390U JPH03112760U JP H03112760 U JPH03112760 U JP H03112760U JP 1957390 U JP1957390 U JP 1957390U JP 1957390 U JP1957390 U JP 1957390U JP H03112760 U JPH03112760 U JP H03112760U
- Authority
- JP
- Japan
- Prior art keywords
- roller
- developing
- seal member
- elastic seal
- toner
- 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
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Landscapes
- Dry Development In Electrophotography (AREA)
Description
第１図は本考案の現像装置の一実施例の概要を
示す部分斜視図、第２図は第１図の−線拡大
矢視図、第３図はレーザープリンタの一例を示す
概略図、第４図は従来の現像装置の例を示す概要
図である。
２０……現像ローラ、２３……ブレード（現像
剤薄層形成部材）、２４……逆流防止シール板（
弾性シール部材）、２４ａ……スクレーパ部、２
９……トナー回収ローラ。
FIG. 1 is a partial perspective view showing an outline of an embodiment of the developing device of the present invention, FIG. 2 is an enlarged view taken along the - line in FIG. 1, and FIG. 3 is a schematic view showing an example of a laser printer. FIG. 4 is a schematic diagram showing an example of a conventional developing device. 20...Developing roller, 23...Blade (developer thin layer forming member), 24...Backflow prevention seal plate (
elastic seal member), 24a... scraper part, 2
9...Toner collection roller.
Claims (1)
成されたトナーの薄層を現像に用い、更に、現像
されずに現像領域を通過したトナーを、上記現像
ローラに圧接させた逆流防止用の弾性シール部材
を通過させるようにしてある現像装置において、
上記現像ローラの現像領域よりも下流部で上記弾
性シール部材よりも上流部に、トナー回収ローラ
を設け、且つ該トナー回収ローラの周面に、上記
弾性シール部材の一部を延長して当接させてなる
ことを特徴とする現像装置。 A thin layer of toner formed on the developing roller by a developer thin layer forming member is used for development, and the toner that has passed through the developing area without being developed is brought into pressure contact with the developing roller to prevent backflow. In a developing device configured to pass through an elastic seal member,
A toner collection roller is provided downstream of the development area of the development roller and upstream of the elastic seal member, and a part of the elastic seal member is extended and brought into contact with the circumferential surface of the toner collection roller. A developing device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1957390U JPH03112760U (en) | 1990-02-28 | 1990-02-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1957390U JPH03112760U (en) | 1990-02-28 | 1990-02-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03112760U true JPH03112760U (en) | 1991-11-18 |
Family
ID=31522683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1957390U Pending JPH03112760U (en) | 1990-02-28 | 1990-02-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03112760U (en) |
-
1990
- 1990-02-28 JP JP1957390U patent/JPH03112760U/ja active Pending