JPS59166250U - Optical system stain prevention device for laser printers, etc. - Google Patents
Optical system stain prevention device for laser printers, etc.Info
- Publication number
- JPS59166250U JPS59166250U JP5799683U JP5799683U JPS59166250U JP S59166250 U JPS59166250 U JP S59166250U JP 5799683 U JP5799683 U JP 5799683U JP 5799683 U JP5799683 U JP 5799683U JP S59166250 U JPS59166250 U JP S59166250U
- Authority
- JP
- Japan
- Prior art keywords
- optical system
- photoreceptor
- prevention device
- shield
- slit
- 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
- Exposure Or Original Feeding In Electrophotography (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来のレーザープリンタの概略構成を示す縦断
面図ミ第２図はその光学系の平面図、第３図は本考案の
実施例を示す縦断面図、第４図は他の実施例を示す縦断
面図である。
１・・・光学系、２・・・光学系ハウジング、１３・・
・感光体、２２・・・スリット、２３・・・スリットか
ら感光体迄の光路、２４・・・内側シールド、２５・・
・外側シールド、２６・・・ブラシ、２７・・・スリッ
ト。Fig. 1 is a longitudinal cross-sectional view showing the schematic structure of a conventional laser printer, Fig. 2 is a plan view of its optical system, Fig. 3 is a longitudinal cross-sectional view showing an embodiment of the present invention, and Fig. 4 is another embodiment. It is a longitudinal cross-sectional view showing an example. 1... Optical system, 2... Optical system housing, 13...
・Photoconductor, 22...Slit, 23...Optical path from slit to photoconductor, 24...Inner shield, 25...
-Outer shield, 26... brush, 27... slit.
Claims (3)
レーザー光を射出して感光体表面を走査露光するレーザ
ープリンタ等の光学系汚れ防止装置において、上記スリ
ットから感光体表面に至るレーザー光の光路を囲繞して
内外２重のシールドを感光体の移動を妨げないように設
け、上記の内側シールドと外側シールドとの間隙にハウ
ジング下部より感光体表面に向う空気流を形成する手段
を設けたことを特徴とする光学系汚れ防止装置。(1) In an optical system stain prevention device such as a laser printer that scans and exposes the surface of a photoconductor by emitting a deflected laser beam from a slit at the bottom of the optical system housing, the optical path of the laser beam from the slit to the photoconductor surface is A dual inner and outer shield is provided surrounding the photoreceptor so as not to obstruct movement of the photoreceptor, and a means is provided in the gap between the inner and outer shields to form an air flow from the bottom of the housing toward the surface of the photoreceptor. Features optical system dirt prevention device.
ドと感光体表面との間の隙間を遮閉するブラシを設けた
ことを特徴とする実用新案登録請求の範囲第１項に記載
の光学系汚れ防止装置。(2) A utility model according to claim 1, characterized in that a brush is provided on the edge of the inner shield on the side of the photoreceptor to close the gap between the shield and the surface of the photoreceptor. Optical system dirt prevention device.
気流が円滑にレーザー先々路に流入して感光体の方に向
うような、シールドの面に対して傾斜した断面を有する
スリットを設けたことを特徴とする実用新案登録請求の
範囲第２項に記、載の光学系汚れ防止装置。(3) In the middle of the inner shield, a slit with a cross section inclined with respect to the surface of the shield is provided so that the airflow flowing through the gap between the inner and outer shields smoothly flows into the path of the laser and toward the photoreceptor. An optical system stain prevention device characterized by the features set forth in claim 2 of the registered utility model claim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5799683U JPS59166250U (en) | 1983-04-20 | 1983-04-20 | Optical system stain prevention device for laser printers, etc. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5799683U JPS59166250U (en) | 1983-04-20 | 1983-04-20 | Optical system stain prevention device for laser printers, etc. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59166250U true JPS59166250U (en) | 1984-11-07 |
Family
ID=30188283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5799683U Pending JPS59166250U (en) | 1983-04-20 | 1983-04-20 | Optical system stain prevention device for laser printers, etc. |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59166250U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS636515A (en) * | 1986-06-27 | 1988-01-12 | Hitachi Ltd | Scanning optical system |
| JPS6366575A (en) * | 1986-09-09 | 1988-03-25 | Ricoh Co Ltd | Electrostatic recorder |
| JPS63300268A (en) * | 1987-05-29 | 1988-12-07 | Ricoh Co Ltd | Image forming device |
-
1983
- 1983-04-20 JP JP5799683U patent/JPS59166250U/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS636515A (en) * | 1986-06-27 | 1988-01-12 | Hitachi Ltd | Scanning optical system |
| JPS6366575A (en) * | 1986-09-09 | 1988-03-25 | Ricoh Co Ltd | Electrostatic recorder |
| JPS63300268A (en) * | 1987-05-29 | 1988-12-07 | Ricoh Co Ltd | Image forming device |
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