JPS63118045U - - Google Patents
Info
- Publication number
- JPS63118045U JPS63118045U JP873487U JP873487U JPS63118045U JP S63118045 U JPS63118045 U JP S63118045U JP 873487 U JP873487 U JP 873487U JP 873487 U JP873487 U JP 873487U JP S63118045 U JPS63118045 U JP S63118045U
- Authority
- JP
- Japan
- Prior art keywords
- forming apparatus
- image forming
- charger
- dust
- image
- 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
- 108091008695 photoreceptors Proteins 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000002131 composite material Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Magnetic Brush Developing In Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
- Color Electrophotography (AREA)
Description
第１図は本考案画像形成装置の一例を示す概要
構成図、第２図は像露光光学系の構成図、第３図
は感光体ドラム表面の電位変化を示す工程図、第
４図及び第５図は帯電器に取付けられた防塵電極
の例を示す部分図及び斜視図、第６図は本考案画
像形成装置の他の例を示す部分図である。
１……原稿台、２……原稿読取部、６……撮像
装置、７……信号処理部、８Ａ〜８Ｄ……レーザ
光学系、８１……半導体レーザ発振器、８２……
回転多面鏡、８３……ｆ−θレンズ、９……感光
体ドラム、１０，１０Ａ〜１０Ｄ……帯電器、１
０ａ……係合突部、１１，１１Ａ〜１１Ｄ……現
像器、１１ａ……現像剤搬送スリーブ、１８……
防塵電極、１８ａ……スリツト、１９……ツエナ
ーダイオード、２０……ケーシング、２１……カ
ム、２２……現像バイアス電源。
FIG. 1 is a schematic configuration diagram showing an example of the image forming apparatus of the present invention, FIG. 2 is a configuration diagram of the image exposure optical system, FIG. 3 is a process diagram showing potential changes on the surface of the photoreceptor drum, and FIGS. FIG. 5 is a partial view and perspective view showing an example of a dustproof electrode attached to a charger, and FIG. 6 is a partial view showing another example of the image forming apparatus of the present invention. DESCRIPTION OF SYMBOLS 1... Original table, 2... Original reading unit, 6... Imaging device, 7... Signal processing unit, 8A-8D... Laser optical system, 81... Semiconductor laser oscillator, 82...
Rotating polygon mirror, 83...f-theta lens, 9...photosensitive drum, 10, 10A to 10D...charger, 1
0a... Engaging protrusion, 11, 11A to 11D... Developing device, 11a... Developer conveying sleeve, 18...
Dust-proof electrode, 18a... slit, 19... Zener diode, 20... casing, 21... cam, 22... development bias power supply.
Claims (1)
によつて帯電された感光体ドラム面に静電像を形
成する露光部と、静電像をトナー像に現像する現
像器とを配設して、静電像の形成と現像とを繰返
すことにより感光体ドラム面に複数のトナー像の
合成像を形成する画像形成装置において、前記帯
電器、露光部、現像器のいずれかに近接して感光
体ドラム面に対向するトナー飛散防止用の防塵電
極を画像形成装置から引き出し可能に設けたこと
を特徴とする画像形成装置。 (2) 前記防塵電極が前記帯電器と露光部に近接
して設けられる実用新案登録請求の範囲第１項記
載の画像形成装置。 (3) 前記防塵電極が前記帯電器に取付けられて
帯電器と共に引き出し可能である実用新案登録請
求の範囲第２項記載の画像形成装置。 (4) 前記防塵電極が前記露光部と現像器に近接
して設けられる実用新案登録請求の範囲第１項記
載の画像形成装置。 (5) 前記防塵電極が前記現像器に取付けられて
現像器と共に引き出し可能である実用新案登録請
求の範囲第４項記載の画像形成装置。[Claims for Utility Model Registration] (1) A charger is provided around the photoreceptor drum, an exposure section that forms an electrostatic image on the surface of the photoreceptor drum charged by the charger, and In an image forming apparatus that forms a composite image of a plurality of toner images on a photoreceptor drum surface by repeating formation and development of an electrostatic image by disposing a developing device that develops an image, the charging device, an exposure device 1. An image forming apparatus characterized in that a dustproof electrode for preventing toner scattering is provided in the vicinity of either a developing unit or a developing unit and facing a surface of a photoreceptor drum and is removable from the image forming apparatus. (2) The image forming apparatus according to claim 1, wherein the dust-proof electrode is provided close to the charger and the exposure section. (3) The image forming apparatus according to claim 2, wherein the dust-proof electrode is attached to the charger and can be pulled out together with the charger. (4) The image forming apparatus according to claim 1, wherein the dust-proof electrode is provided close to the exposure section and the developing device. (5) The image forming apparatus according to claim 4, wherein the dust-proof electrode is attached to the developing device and can be pulled out together with the developing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP873487U JPS63118045U (en) | 1987-01-26 | 1987-01-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP873487U JPS63118045U (en) | 1987-01-26 | 1987-01-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63118045U true JPS63118045U (en) | 1988-07-30 |
Family
ID=30793392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP873487U Pending JPS63118045U (en) | 1987-01-26 | 1987-01-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63118045U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010078705A (en) * | 2008-09-24 | 2010-04-08 | Ricoh Co Ltd | Image forming apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6177869A (en) * | 1984-09-26 | 1986-04-21 | Mita Ind Co Ltd | Electrophotographic device |
-
1987
- 1987-01-26 JP JP873487U patent/JPS63118045U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6177869A (en) * | 1984-09-26 | 1986-04-21 | Mita Ind Co Ltd | Electrophotographic device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010078705A (en) * | 2008-09-24 | 2010-04-08 | Ricoh Co Ltd | Image forming apparatus |
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