JPH0351457U - - Google Patents
Info
- Publication number
- JPH0351457U JPH0351457U JP11209289U JP11209289U JPH0351457U JP H0351457 U JPH0351457 U JP H0351457U JP 11209289 U JP11209289 U JP 11209289U JP 11209289 U JP11209289 U JP 11209289U JP H0351457 U JPH0351457 U JP H0351457U
- Authority
- JP
- Japan
- Prior art keywords
- magnetic roller
- blade
- developing device
- shaped electrode
- insulating sleeve
- 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
- Magnetic Brush Developing In Electrophotography (AREA)
- Developing For Electrophotography (AREA)
Description
第１図は実施例の現像装置の側断面図、第２図
及び第３図はその現像ローラ部分の断面図、第４
図はその現像装置を装備したレーザプリンタの側
断面図、第５図は従来の現像装置の側断面図であ
る。
５……現像ローラ（磁気ローラ）、５ｂ……絶
縁性スリーブ、７……感光体ベルト（像担持体）
、８，８ａ……ブレード状電極、Ｔ……高抵抗磁
性トナー。
FIG. 1 is a side sectional view of the developing device of the embodiment, FIGS. 2 and 3 are sectional views of the developing roller portion thereof, and FIG.
The figure is a side sectional view of a laser printer equipped with the developing device, and FIG. 5 is a side sectional view of a conventional developing device. 5...Developing roller (magnetic roller), 5b...Insulating sleeve, 7...Photosensitive belt (image carrier)
, 8, 8a...blade-shaped electrode, T...high resistance magnetic toner.
Claims (1)
スリーブを備えた磁気ローラと静電潜像を担持す
る像担持体とを接触させ前記静電潜像を現像する
現像装置において、 前記磁気ローラの長さ方向において該磁気ロー
ラの表面に接触し、前記絶縁性スリーブの表面電
位を制御するブレード状の電極を設けたことを特
徴とする現像装置。 (2) 前記ブレード状の電極は複数個からなり、
少なくとも一つが交互に前記磁気ローラの表面に
接触するように駆動され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 magnetic roller equipped with an insulating sleeve that attracts high-resistance magnetic toner on its surface is brought into contact with an image carrier carrying an electrostatic latent image, and the electrostatic latent image is developed. A developing device comprising: a blade-shaped electrode that contacts the surface of the magnetic roller in the length direction of the magnetic roller and controls the surface potential of the insulating sleeve. (2) the blade-shaped electrode is composed of a plurality of pieces;
2. The developing device according to claim 1, wherein at least one of the developing devices is driven to alternately contact the surface of the magnetic roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11209289U JPH0351457U (en) | 1989-09-27 | 1989-09-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11209289U JPH0351457U (en) | 1989-09-27 | 1989-09-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0351457U true JPH0351457U (en) | 1991-05-20 |
Family
ID=31660546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11209289U Pending JPH0351457U (en) | 1989-09-27 | 1989-09-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0351457U (en) |
-
1989
- 1989-09-27 JP JP11209289U patent/JPH0351457U/ja active Pending