JPS61153057U - - Google Patents
Info
- Publication number
- JPS61153057U JPS61153057U JP3573185U JP3573185U JPS61153057U JP S61153057 U JPS61153057 U JP S61153057U JP 3573185 U JP3573185 U JP 3573185U JP 3573185 U JP3573185 U JP 3573185U JP S61153057 U JPS61153057 U JP S61153057U
- Authority
- JP
- Japan
- Prior art keywords
- developing
- electromagnet
- sleeves
- section
- developing device
- 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 3
- 230000005347 demagnetization Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
Landscapes
- Magnetic Brush Developing In Electrophotography (AREA)
Description
図面は本考案の実施例を示し、第１図は静電写
真複写機の要部の正面図、第２図及び第３図は現
像部での穂の形成状態と消去状態とを示す説明図
、第４図及び第５図は夫々別実施例の説明図であ
る。
１……感光体、１０……現像剤、１２……現像
スリーブ、Ｍ１，Ｍ２，Ｍ６……電磁石、ａ……
現像剤の穂。
The drawings show an embodiment of the present invention, and FIG. 1 is a front view of the main parts of an electrostatographic copying machine, and FIGS. 2 and 3 are explanatory diagrams showing the state of formation and erasure of ears in the developing section. , FIG. 4, and FIG. 5 are explanatory diagrams of different embodiments, respectively. DESCRIPTION OF SYMBOLS 1...Photoreceptor, 10...Developer, 12...Developing sleeve, M1 , M2 , M6 ...Electromagnet, a...
Ear of developer.
Claims (1)
すると共に、該現像スリーブの周面にスリーブ軸
線方向に沿う現像剤の穂を形成するための複数個
の磁石を、前記現像スリーブの内部側に配置した
画像形成機の現像装置であつて、前記感光体に対
する現像スリーブの現像部における磁石をそれぞ
れ直流電源による電磁石にすると共に、現像工程
時において現像運転対象の現像スリーブに対応す
る直流電磁石のみを励磁させることを特徴とする
画像形成機の現像装置。 前記現像部の電磁石に隣り合う磁石を前記現
像部電磁石とは逆極性の直流電磁石とし、前記現
像部電磁石の消磁制御下において前記逆極性電磁
石の磁力を通常の現像時よりも強くすることを特
徴とする実用新案登録請求の範囲第項に記載の
現像装置。[Claims for Utility Model Registration] A plurality of non-magnetic developing sleeves are disposed opposite to a photoreceptor, and a plurality of magnets are provided on the circumferential surface of the developing sleeves for forming spikes of developer along the axial direction of the sleeves. , a developing device of an image forming machine disposed inside the developing sleeve, wherein the magnets in the developing section of the developing sleeve relative to the photoreceptor are each electromagnets powered by a DC power supply, and the developing device for the developing operation is provided during the developing process. A developing device for an image forming machine characterized by exciting only a DC electromagnet corresponding to a sleeve. The magnet adjacent to the electromagnet in the developing section is a DC electromagnet with a polarity opposite to that of the developing section electromagnet, and the magnetic force of the opposite polarity electromagnet is made stronger than during normal development under demagnetization control of the developing section electromagnet. A developing device according to claim 1 of the utility model registration claim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3573185U JPS61153057U (en) | 1985-03-12 | 1985-03-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3573185U JPS61153057U (en) | 1985-03-12 | 1985-03-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61153057U true JPS61153057U (en) | 1986-09-22 |
Family
ID=30540276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3573185U Pending JPS61153057U (en) | 1985-03-12 | 1985-03-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61153057U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS504737B1 (en) * | 1967-02-20 | 1975-02-24 |
-
1985
- 1985-03-12 JP JP3573185U patent/JPS61153057U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS504737B1 (en) * | 1967-02-20 | 1975-02-24 |
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