JPH0311245U - - Google Patents
Info
- Publication number
- JPH0311245U JPH0311245U JP7081589U JP7081589U JPH0311245U JP H0311245 U JPH0311245 U JP H0311245U JP 7081589 U JP7081589 U JP 7081589U JP 7081589 U JP7081589 U JP 7081589U JP H0311245 U JPH0311245 U JP H0311245U
- Authority
- JP
- Japan
- Prior art keywords
- density
- toner
- power source
- detects
- developing
- 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 6
- 238000010586 diagram Methods 0.000 description 5
- 108091008695 photoreceptors Proteins 0.000 description 2
Landscapes
- Developing For Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
Description
第１図は本考案による電子写真装置の一実施例
のブロツク図、第２図は画像濃度と現像ポテンシ
ヤルとの関係を示す特性図、第３図は電子写真装
置の感光体周りの構成図、第４図は画像濃度、ト
ナー濃度とコピー回数の関係を示す特性図、第５
図は画像濃度とトナー濃度との関係を示す特性図
である。
１……トナーエンド検知手段、２……濃度検知
手段、３……制御手段、４……帯電電源、５……
現像バイアス電源、６……感光体、１２……現像
器。
FIG. 1 is a block diagram of an embodiment of an electrophotographic apparatus according to the present invention, FIG. 2 is a characteristic diagram showing the relationship between image density and development potential, and FIG. 3 is a block diagram of the area around the photoreceptor of the electrophotographic apparatus. Figure 4 is a characteristic diagram showing the relationship between image density, toner density and number of copies;
The figure is a characteristic diagram showing the relationship between image density and toner density. DESCRIPTION OF SYMBOLS 1... Toner end detection means, 2... Density detection means, 3... Control means, 4... Charging power source, 5...
Developing bias power supply, 6... photoreceptor, 12... developing device.
Claims (1)
、この検知結果に基づきトナー補給を行う電子写
真装置において、トナーエンド検知手段と、トナ
ーエンド検知信号を受けて現像器内のトナー濃度
を検知する濃度検知手段と、濃度検知結果に基づ
き現像バイアス電源、帯電電源等を制御し、現像
ポテンシヤルをトナー濃度に合わせて上昇させる
制御手段とを備えたことを特徴とする電子写真装
置。 An electrophotographic device that detects the density of a toner image formed on a photoconductor and replenishes toner based on the detection result includes a toner end detection means and a toner end detection signal that detects the toner density in a developing device. What is claimed is: 1. An electrophotographic apparatus comprising: a density detecting means for detecting the density; and a controlling means for controlling a developing bias power source, a charging power source, etc. based on the density detection result, and increasing a developing potential in accordance with the toner density.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7081589U JPH0311245U (en) | 1989-06-19 | 1989-06-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7081589U JPH0311245U (en) | 1989-06-19 | 1989-06-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0311245U true JPH0311245U (en) | 1991-02-04 |
Family
ID=31607294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7081589U Pending JPH0311245U (en) | 1989-06-19 | 1989-06-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0311245U (en) |
-
1989
- 1989-06-19 JP JP7081589U patent/JPH0311245U/ja active Pending
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