JPH02123956U - - Google Patents
Info
- Publication number
- JPH02123956U JPH02123956U JP3199389U JP3199389U JPH02123956U JP H02123956 U JPH02123956 U JP H02123956U JP 3199389 U JP3199389 U JP 3199389U JP 3199389 U JP3199389 U JP 3199389U JP H02123956 U JPH02123956 U JP H02123956U
- Authority
- JP
- Japan
- Prior art keywords
- doctor
- developing sleeve
- magnetic
- magnet body
- magnet
- 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
- 239000000696 magnetic material Substances 0.000 claims description 5
- 108091008695 photoreceptors Proteins 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 1
Description
第１〜３図は本考案に係る現像装置を示す図で
あり、第１図はその概略断面図、第２図ａ〜第２
図ｃはそれぞれその要部拡大概略図、第３図ａ〜
第３図ｃはそれぞれ第２図ａ〜第２図ｃに対応す
るその作用を示す一部拡大概略図である。第４，
５図は従来の現像装置を示す図であり、第４図は
その全体概略図、第５図はその要部拡大断面図で
ある。
１１……現像装置、１２……現像剤、１３……
貯溜体、１５……感光体、１６……現像スリーブ
、１７……磁石体、２５……ドクター体、２５ａ
……磁性材、２５ｂ……非磁性材。
1 to 3 are views showing a developing device according to the present invention, FIG. 1 is a schematic sectional view thereof, and FIGS.
Figure c is an enlarged schematic diagram of the main parts, Figure 3 a~
FIG. 3c is a partially enlarged schematic diagram showing the operation corresponding to FIGS. 2a to 2c, respectively. Fourth,
FIG. 5 is a diagram showing a conventional developing device, FIG. 4 is an overall schematic diagram thereof, and FIG. 5 is an enlarged sectional view of a main part thereof. 11...Developing device, 12...Developer, 13...
Reservoir, 15...Photoreceptor, 16...Developing sleeve, 17...Magnet, 25...Doctor body, 25a
...Magnetic material, 25b...Nonmagnetic material.
Claims (1)
れた感光体の表面に静電潜像を可視像に現像させ
る現像スリーブと、現像スリーブ内に回転可能に
収納され外周部で円周方向に複数の異なる磁極を
交互に有する磁石体と、現像スリーブに近接して
配置され貯溜体から現像スリーブの表面に汲み上
げられた現像剤を所定の厚さに形成するドクター
体と、を備えた現像装置において、前記ドクター
体が回転可能に設けられ円周方向に磁性材と非磁
性材とを交互に配置された外周部を有し、現像ス
リーブおよび磁石体の回転に伴つてドクター体が
回転する際、ドクター体の磁性材と磁石体の磁極
の境界とが最も接近しドクター体の非磁性材と磁
石体の磁極とが最も接近するようドクター体と磁
石体とを同期して回転させることを特徴とする現
像装置。 A storage body that stores developer; a developing sleeve that develops the electrostatic latent image into a visible image on the surface of the photoreceptor on which the electrostatic latent image is formed; A magnet body having a plurality of different magnetic poles alternately in the circumferential direction, and a doctor body disposed close to the developing sleeve and forming the developer drawn up from the reservoir onto the surface of the developing sleeve to a predetermined thickness. In the developing device, the doctor body is rotatably provided and has an outer peripheral portion in which magnetic materials and non-magnetic materials are arranged alternately in the circumferential direction, and the doctor body rotates as the developing sleeve and the magnet body rotate. When rotating, the doctor body and the magnet body are rotated synchronously so that the boundary between the magnetic material of the doctor body and the magnetic pole of the magnet body comes closest to each other, and the non-magnetic material of the doctor body and the magnetic pole of the magnet body come closest to each other. A developing device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3199389U JPH02123956U (en) | 1989-03-20 | 1989-03-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3199389U JPH02123956U (en) | 1989-03-20 | 1989-03-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02123956U true JPH02123956U (en) | 1990-10-12 |
Family
ID=31534820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3199389U Pending JPH02123956U (en) | 1989-03-20 | 1989-03-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02123956U (en) |
-
1989
- 1989-03-20 JP JP3199389U patent/JPH02123956U/ja active Pending