JPS5583074A - Electrostatic latent image developing device - Google Patents
Electrostatic latent image developing deviceInfo
- Publication number
- JPS5583074A JPS5583074A JP15949078A JP15949078A JPS5583074A JP S5583074 A JPS5583074 A JP S5583074A JP 15949078 A JP15949078 A JP 15949078A JP 15949078 A JP15949078 A JP 15949078A JP S5583074 A JPS5583074 A JP S5583074A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- toner
- magnet
- developing roller
- poles
- 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
- 239000000463 material Substances 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 238000001179 sorption measurement Methods 0.000 abstract 1
- 230000003068 static effect Effects 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
Landscapes
- Magnetic Brush Developing In Electrophotography (AREA)
Abstract
PURPOSE: To obtain the copies of good image quality free from uneven development and ground stains by forming the developing material donating member built therein with a magnet by the non-magnetic elastic layer and magnetic conductive layer subsequently coated on non-magnetic substrate.
CONSTITUTION: A developing roller 1 as a developer donating member consists of a non-magnetic sleeve 3 in which a static bar magnet 2 is contained and a magnetic conductive layer 5 coated thereon. The bar magnet 2 is circular in section and its peripheral surface is provided with three magnetic poles alternately disposed with N and S poles. One of the N poles thereof is so disposed as to oppose to the portion where the developing roller 1 and photosensitive drum 6 contact. One- component type high resistance magnetic toner 8 is contained in a non-magnetic hopper 7 and the thickness of the toner 8 is defined by the doctor 10 which also serves as a friction charging member. Since the magnet which receives the toner 8 is larger than conventional ones, the toner 8 is held relatively strongly on the developing roller 1, thus the adsorption of the toner 8 on the non-image portions of the electrostatic latent images is obviated and the occurrence of ground stains obviated.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15949078A JPS5583074A (en) | 1978-12-18 | 1978-12-18 | Electrostatic latent image developing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15949078A JPS5583074A (en) | 1978-12-18 | 1978-12-18 | Electrostatic latent image developing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5583074A true JPS5583074A (en) | 1980-06-23 |
Family
ID=15694897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15949078A Pending JPS5583074A (en) | 1978-12-18 | 1978-12-18 | Electrostatic latent image developing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5583074A (en) |
-
1978
- 1978-12-18 JP JP15949078A patent/JPS5583074A/en active Pending
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