JPH03122451U - - Google Patents
Info
- Publication number
- JPH03122451U JPH03122451U JP2955190U JP2955190U JPH03122451U JP H03122451 U JPH03122451 U JP H03122451U JP 2955190 U JP2955190 U JP 2955190U JP 2955190 U JP2955190 U JP 2955190U JP H03122451 U JPH03122451 U JP H03122451U
- Authority
- JP
- Japan
- Prior art keywords
- toner
- carrier
- latent image
- toner carrier
- dielectric
- 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.)
- Granted
Links
- 239000003989 dielectric material Substances 0.000 claims description 4
- 230000005684 electric field Effects 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
Landscapes
- Dry Development In Electrophotography (AREA)
Description
第１図は現像装置の一例を示す概略断面図、第
２図は現像ローラの誘電体と該ローラに付着する
トナーを模式的に拡大して示した説明図、第３図
は同じく誘電体を模式的に拡大して示した現像ロ
ーラ表面の平面図、第４図は誘電体により形成さ
れる微小電界の電気力線を示した説明図、第５図
は現像ローラを製造するときの状況を示す説明図
、第６図ａ，ｂ，ｃはその各製造工程を示す模式
図である。
１１……誘電体、１１ａ……誘電性物質、１２
……導電部。
FIG. 1 is a schematic cross-sectional view showing an example of a developing device, FIG. 2 is an explanatory diagram schematically showing a dielectric of a developing roller and toner attached to the roller, and FIG. FIG. 4 is an explanatory diagram showing the lines of electric force of the minute electric field formed by the dielectric, and FIG. 5 shows the situation when manufacturing the developing roller. The explanatory diagrams shown in FIGS. 6a, 6b, and 6c are schematic diagrams showing each manufacturing process. 11...dielectric material, 11a...dielectric material, 12
...Conductive part.
Claims (1)
供給し、該担持体の表面に前記トナーを担持して
搬送し、潜像担持体と前記トナー担持体が互いに
対向した現像領域にて、該潜像担持体に形成され
た静電潜像をトナー担持体に担持した前記トナー
によつて可視像化する現像装置において、 前記トナー担持体として、導電性の基体にレー
ザビームを照射して多数の穴を形成し、かつその
穴に誘電物質を埋め込み、その表面を研磨して、
前記基体の導電部と、前記誘電物質より成る誘電
体とを表面に露出させたトナー担持体を用い、 誘電体を所定の極性に帯電させることにより、
トナー担持体表面の近傍に微小閉電界を形成し、
静電潜像の可視像化に用いられる前記トナーを前
記閉電界によつて、トナー担持体表面に付着させ
る帯電手段を設けたことを特徴とする現像装置。[Claims for Utility Model Registration] Non-magnetic toner is supplied to a rotationally driven toner carrier, the toner is carried on the surface of the carrier and is conveyed, and the latent image carrier and the toner carrier face each other. In the developing device, the electrostatic latent image formed on the latent image carrier is visualized by the toner carried on the toner carrier in the developing region, wherein the toner carrier is a conductive substrate. A laser beam is irradiated to form a large number of holes, a dielectric material is filled in the holes, and the surface is polished.
By using a toner carrier in which the conductive portion of the base and a dielectric made of the dielectric material are exposed on the surface, and charging the dielectric to a predetermined polarity,
A minute closed electric field is formed near the surface of the toner carrier,
A developing device comprising a charging means for causing the toner used for visualizing an electrostatic latent image to adhere to the surface of a toner carrier by the closed electric field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990029551U JP2563012Y2 (en) | 1990-03-26 | 1990-03-26 | Developing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990029551U JP2563012Y2 (en) | 1990-03-26 | 1990-03-26 | Developing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03122451U true JPH03122451U (en) | 1991-12-13 |
| JP2563012Y2 JP2563012Y2 (en) | 1998-02-18 |
Family
ID=31532306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990029551U Expired - Lifetime JP2563012Y2 (en) | 1990-03-26 | 1990-03-26 | Developing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2563012Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59220763A (en) * | 1983-05-31 | 1984-12-12 | Ricoh Co Ltd | Manufacture of developer carrier |
| JPS6054150A (en) * | 1983-09-01 | 1985-03-28 | Hitachi Ltd | Ion source |
-
1990
- 1990-03-26 JP JP1990029551U patent/JP2563012Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59220763A (en) * | 1983-05-31 | 1984-12-12 | Ricoh Co Ltd | Manufacture of developer carrier |
| JPS6054150A (en) * | 1983-09-01 | 1985-03-28 | Hitachi Ltd | Ion source |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2563012Y2 (en) | 1998-02-18 |
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