JPH02134550U - - Google Patents
Info
- Publication number
- JPH02134550U JPH02134550U JP4357089U JP4357089U JPH02134550U JP H02134550 U JPH02134550 U JP H02134550U JP 4357089 U JP4357089 U JP 4357089U JP 4357089 U JP4357089 U JP 4357089U JP H02134550 U JPH02134550 U JP H02134550U
- Authority
- JP
- Japan
- Prior art keywords
- photosensitive drum
- image forming
- forming apparatus
- variable means
- surface potential
- 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
- 238000000034 method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Developing For Electrophotography (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
Description
第１図は本考案に係る電子写真法を用いた画像
形成装置に於る濃度調整装置の一実施例の構成図
、第２図は他の実施例の概略図、第３図は電子写
真法に於る反転現像の現像電位モデルを示す図で
ある。
１……感光ドラム、２……コロナチヤージヤ（
感光ドラム帯電手段）、３……現像装置、２３Ａ
……可変抵抗器（可変手段）、３３Ａ……可変抵
抗器（可変手段）、２５Ａ……可変抵抗器（可変
手段）。
Fig. 1 is a block diagram of one embodiment of a density adjustment device in an image forming apparatus using electrophotography according to the present invention, Fig. 2 is a schematic diagram of another embodiment, and Fig. 3 is a diagram of an electrophotography method. FIG. 3 is a diagram showing a development potential model of reversal development in . 1...Photosensitive drum, 2...Corona charger (
photosensitive drum charging means), 3...developing device, 23A
...Variable resistor (variable means), 33A...Variable resistor (variable means), 25A...Variable resistor (variable means).
Claims (1)
段により帯電される感光ドラムの表面電位とを、
夫々可変手段により調整可能とすると共に両可変
手段を連動するよう構成し、バイアス電圧の調整
に伴なつて前記感光ドラム帯電手段による前記感
光ドラムの表面電位も変化するよう構成したこと
、を特徴とする電子写真法を用いた画像形成装置
に於る濃度調整装置。 (2) 上記感光ドラム帯電手段がコロナチヤージ
ヤであり、前記可変手段が該コロナチヤージヤの
コロナ電流を制御することにより上記感光ドラム
の表面電位を可変とするよう構成したことを特徴
とする請求項(1)記載の電子写真法を用いた画像
形成装置に於る濃度調整装置。[Claims for Utility Model Registration] (1) In an image forming apparatus using electrophotography, the bias voltage of the developing device and the surface potential of the photosensitive drum charged by the photosensitive drum charging means,
Each of the variable means can be adjusted by a variable means, and both variable means are configured to be interlocked, and the surface potential of the photosensitive drum by the photosensitive drum charging means is also changed as the bias voltage is adjusted. A density adjustment device in an image forming apparatus using electrophotography. (2) Claim (1) characterized in that the photosensitive drum charging means is a corona charger, and the variable means is configured to vary the surface potential of the photosensitive drum by controlling the corona current of the corona charger. A density adjustment device in an image forming apparatus using the electrophotographic method described above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4357089U JPH02134550U (en) | 1989-04-13 | 1989-04-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4357089U JPH02134550U (en) | 1989-04-13 | 1989-04-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02134550U true JPH02134550U (en) | 1990-11-08 |
Family
ID=31556092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4357089U Pending JPH02134550U (en) | 1989-04-13 | 1989-04-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02134550U (en) |
-
1989
- 1989-04-13 JP JP4357089U patent/JPH02134550U/ja active Pending
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