JPS5552077A - Dry type developing device of electrophotographic copier - Google Patents
Dry type developing device of electrophotographic copierInfo
- Publication number
- JPS5552077A JPS5552077A JP12599778A JP12599778A JPS5552077A JP S5552077 A JPS5552077 A JP S5552077A JP 12599778 A JP12599778 A JP 12599778A JP 12599778 A JP12599778 A JP 12599778A JP S5552077 A JPS5552077 A JP S5552077A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic material
- electrode member
- material portion
- developing
- sleeve
- 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
Landscapes
- Magnetic Brush Developing In Electrophotography (AREA)
Abstract
PURPOSE:To obtain sufficient image density and obtain copied images of good quality by providing the electrode member including magnetic material portion on a developing sleeve as the shape conforming roughly to the photoreceptor surface. CONSTITUTION:A developing sleeve 1 comprises forming resin such as polyethlene, phenol or the like or insulation-type non-magnetic material such as glass or the like to cylindrical form. The multipolar magnet 2 having been magnetized to 8 poles is driven to rotate counterclockwise at a suitable number of revolutions. Resin-coated iron powder is bound to the magnetic material portion 3 by means of adhesive agent or the like on the sleeve 1 and in the lower half portion of the developing region 6 opposing to a drum 5. Further, an electrode member 4 consisting of a conductive tape is affixed onto the magnetic material portion 3, whereby it is installed to the shape roughly conforming to the photoreceptor surface. The electrode member is electrically connected to the base of the photosensitive drum 5. Thereby, developing efficiency may be enhanced and the copied images of good quality and high density obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12599778A JPS5552077A (en) | 1978-10-12 | 1978-10-12 | Dry type developing device of electrophotographic copier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12599778A JPS5552077A (en) | 1978-10-12 | 1978-10-12 | Dry type developing device of electrophotographic copier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5552077A true JPS5552077A (en) | 1980-04-16 |
Family
ID=14924156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12599778A Pending JPS5552077A (en) | 1978-10-12 | 1978-10-12 | Dry type developing device of electrophotographic copier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5552077A (en) |
-
1978
- 1978-10-12 JP JP12599778A patent/JPS5552077A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20040305 |
|
| A621 | Written request for application examination |
Effective date: 20040305 Free format text: JAPANESE INTERMEDIATE CODE: A621 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20060627 |
|
| A601 | Written request for extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A601 Effective date: 20060921 |
|
| A602 | Written permission of extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A602 Effective date: 20061106 |
|
| A313 | Final decision of rejection without a dissenting response from the applicant |
Free format text: JAPANESE INTERMEDIATE CODE: A313 Effective date: 20070216 |
|
| A02 | Decision of refusal |
Effective date: 20070320 Free format text: JAPANESE INTERMEDIATE CODE: A02 |