JPS636460U - - Google Patents
Info
- Publication number
- JPS636460U JPS636460U JP10018386U JP10018386U JPS636460U JP S636460 U JPS636460 U JP S636460U JP 10018386 U JP10018386 U JP 10018386U JP 10018386 U JP10018386 U JP 10018386U JP S636460 U JPS636460 U JP S636460U
- Authority
- JP
- Japan
- Prior art keywords
- photosensitive drum
- roller
- axial direction
- charge wire
- image forming
- 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
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
Landscapes
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
Description
第１図は本考案の第１の実施例を示したコロナ
放電器の部分正断面図、第２図はその側断面図、
第３図は本考案の第２の実施例を示したコロナ放
電器の部分正断面図、第４図はその側断面図、第
５図は複写機の一般的構成を示した縦断面図であ
る。
１…帯電用コロナ放電器、２…感光ドラム、１
１…チヤージワイヤ、１７，１７ａ…ローラ、１
８…ローラホルダ、１９…Ｖ字形溝、２０…ロー
ラ軸、２１…圧縮バネ。
FIG. 1 is a partial front sectional view of a corona discharger showing the first embodiment of the present invention, FIG. 2 is a side sectional view thereof,
Fig. 3 is a partial front sectional view of a corona discharger showing a second embodiment of the present invention, Fig. 4 is a side sectional view thereof, and Fig. 5 is a longitudinal sectional view showing the general configuration of a copying machine. be. 1... Charging corona discharger, 2... Photosensitive drum, 1
1...Charge wire, 17, 17a...Roller, 1
8... Roller holder, 19... V-shaped groove, 20... Roller shaft, 21... Compression spring.
Claims (1)
な方向に張設されたチヤージワイヤと、このチヤ
ージワイヤを支持し前記感光ドラム周面に対する
チヤージワイヤの位置を規定する溝を設けた突起
部を有し、前記感光ドラムに対して移動可能なロ
ーラホルダと、前記感光ドラムの軸に平行な軸を
有しこのローラホルダ内に軸方向に移動可能に軸
支され前記感光ドラムの両端部周面に接触して従
動回転するローラとを具備してなり、このローラ
の外径が軸方向に変化することを特徴とする画像
形成装置用コロナ放電器。 (2) 前記ローラが軸方向に、感光ドラム外方に
向かつて漸増する階段状外径を有するものである
実用新案登録請求の範囲第１項に記載の画像形成
装置用コロナ放電器。 (3) 前記ローラが軸方向に、感光ドラム外方に
向かつて外径の漸増する円錐形状を有するもので
ある実用新案登録請求の範囲第１項に記載の画像
形成装置用コロナ放電器。[Claims for Utility Model Registration] (1) A charge wire stretched in a direction parallel to the drum axis facing the circumferential surface of the photosensitive drum, and a charge wire that supports the charge wire and defines the position of the charge wire with respect to the circumferential surface of the photosensitive drum. a roller holder having a protrusion provided with a groove and movable relative to the photosensitive drum; and a roller holder having a shaft parallel to the axis of the photosensitive drum and supported movably in the axial direction within the roller holder; 1. A corona discharger for an image forming apparatus, comprising a roller that is driven to rotate in contact with the peripheral surface of both ends of a photosensitive drum, and the outer diameter of the roller changes in the axial direction. (2) The corona discharger for an image forming apparatus according to claim 1, wherein the roller has a stepped outer diameter that gradually increases in the axial direction toward the outside of the photosensitive drum. (3) The corona discharger for an image forming apparatus according to claim 1, wherein the roller has a conical shape whose outer diameter gradually increases in the axial direction toward the outside of the photosensitive drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10018386U JPS636460U (en) | 1986-06-30 | 1986-06-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10018386U JPS636460U (en) | 1986-06-30 | 1986-06-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS636460U true JPS636460U (en) | 1988-01-16 |
Family
ID=30969762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10018386U Pending JPS636460U (en) | 1986-06-30 | 1986-06-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS636460U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008298876A (en) * | 2007-05-29 | 2008-12-11 | Kyocera Mita Corp | Scorotron electrifier for image forming apparatus |
-
1986
- 1986-06-30 JP JP10018386U patent/JPS636460U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008298876A (en) * | 2007-05-29 | 2008-12-11 | Kyocera Mita Corp | Scorotron electrifier for image forming apparatus |
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