JPH0448546U - - Google Patents
Info
- Publication number
- JPH0448546U JPH0448546U JP9033590U JP9033590U JPH0448546U JP H0448546 U JPH0448546 U JP H0448546U JP 9033590 U JP9033590 U JP 9033590U JP 9033590 U JP9033590 U JP 9033590U JP H0448546 U JPH0448546 U JP H0448546U
- Authority
- JP
- Japan
- Prior art keywords
- toner
- potential
- latent image
- image
- detection sensor
- 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
- 238000001514 detection method Methods 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 7
- 108091008695 photoreceptors Proteins 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Dry Development In Electrophotography (AREA)
Description
第１図は本考案に係る画像形成装置の一例を示
す概略図、第２図は上記画像形成装置の現像部の
周辺構成部の概略図、第３図は現像電位差と感光
体上のトナー付着量との相関特性を示す説明図、
第４図はトナー付着量と濃度検出センサ出力との
相関特性を示す説明図、第５図は電位検出センサ
の特性図、第６図は本実施例に対応したフローチ
ヤート、第７図はこれに対応した機能ブロツク図
である。
１……潜像担持体としての感光体、４……電位
検出センサ、５……現像装置、６……濃度検出セ
ンサ、２３……トナー補給ローラ、Ｐ……基準パ
ターン画像。
FIG. 1 is a schematic diagram showing an example of an image forming apparatus according to the present invention, FIG. 2 is a schematic diagram of peripheral components of the developing section of the image forming apparatus, and FIG. 3 is a diagram showing the development potential difference and toner adhesion on the photoreceptor. An explanatory diagram showing the correlation characteristics with the amount,
Fig. 4 is an explanatory diagram showing the correlation characteristics between toner adhesion amount and density detection sensor output, Fig. 5 is a characteristic diagram of the potential detection sensor, Fig. 6 is a flowchart corresponding to this embodiment, and Fig. 7 is this diagram. FIG. DESCRIPTION OF SYMBOLS 1... Photoreceptor as a latent image carrier, 4... Potential detection sensor, 5... Developing device, 6... Density detection sensor, 23... Toner supply roller, P... Reference pattern image.
Claims (1)
分系現像剤中のトナーを潜像担持体の画像部へ静
電的に移行させてその静電潜像を可視像化する現
像装置と、 前記現像装置に付設されていて、前記二成分現
像剤中にトナーを補給する手段と、 前記現像装置によつて潜像担持体上のトナー像
として形成した基準パターン画像の濃度を検出し
て、画像濃度が一定範囲に保持されるように前記
トナー補給手段を作動させるための濃度検出セン
サと、 潜像担持体の画像部の表面電位を検出する電位
検出センサと、 現像電位差が小さくなるように、潜像担持体の
画像部の電位が変化したことを、前記電位検出セ
ンサが検出したとき、基準パターン画像へのトナ
ー付着量を少なくし、現像電位差が大きくなるよ
うに、前記画像部の電位が変化したことを、電位
検出センサが検出したとき、基準パターン画像へ
のトナー付着量を多くするように、トナー補給手
段によるトナー補給量を変更させる手段とを設け
たことを特徴とする画像形成装置。[Claims for Utility Model Registration] A latent image carrier that forms an electrostatic latent image on its surface, and a latent image carrier that electrostatically transfers toner in a two-component developer to the image area of the latent image carrier. a developing device that visualizes the latent image; a means attached to the developing device for replenishing toner into the two-component developer; and a toner image formed on the latent image carrier by the developing device. a density detection sensor for detecting the density of the formed reference pattern image and operating the toner replenishing means so that the image density is maintained within a certain range; and a density detection sensor for detecting the surface potential of the image area of the latent image carrier. When the potential detection sensor detects that the potential of the image area of the latent image carrier has changed so that the difference in development potential becomes smaller, the amount of toner adhering to the reference pattern image is reduced and the development is started. When the potential detection sensor detects that the potential of the image area has changed so that the potential difference increases, the amount of toner replenishment by the toner replenishing means is changed so as to increase the amount of toner adhering to the reference pattern image. An image forming apparatus comprising: means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9033590U JPH0448546U (en) | 1990-08-29 | 1990-08-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9033590U JPH0448546U (en) | 1990-08-29 | 1990-08-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0448546U true JPH0448546U (en) | 1992-04-24 |
Family
ID=31824998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9033590U Pending JPH0448546U (en) | 1990-08-29 | 1990-08-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0448546U (en) |
-
1990
- 1990-08-29 JP JP9033590U patent/JPH0448546U/ja active Pending
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