JPS54143653A - Developing device - Google Patents
Developing deviceInfo
- Publication number
- JPS54143653A JPS54143653A JP5184278A JP5184278A JPS54143653A JP S54143653 A JPS54143653 A JP S54143653A JP 5184278 A JP5184278 A JP 5184278A JP 5184278 A JP5184278 A JP 5184278A JP S54143653 A JPS54143653 A JP S54143653A
- Authority
- JP
- Japan
- Prior art keywords
- sleeve
- developer
- magnetic
- magnetic pole
- rotation
- 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.)
- Granted
Links
Abstract
PURPOSE: To make the receiving and giving of developer between front and rear stage developer carriers by moving the front stage developer carrier faster than the moving speed of an electrostatic image holding member and moving the rear stage developer carrier slower.
CONSTITUTION: As sleeves 22A, 22B rotate in synchronization to the rotation of an electrostatic image carier 1, the developer first depostis on the sleeve 22B by the magnetic force of the magnetic pole N1 of a magnetic means 23B and the quantity of deposition is evened by a defining plate 30. When it reaches the magnetic pole S1 position, it is attracted to the sleeve 22A side by the magnetic force of the magnetic pole N2. The developer absorbed rotates together with the sleeve 22A and forms a magnetic brush in the position of the magnetic pole N3, thus turning the electrostatic images of the carrier 1 to sensible images. Next, when the developer approaches to the sleeve 22B side owing to the rotation of the sleeve 22A, it is moved to the sleeve 22B side by the magnetic pole S3 of its magnetic means. Here, the rotation of the sleeve 22A is faster than the sleeve 22B and the speed difference thereof is kept at about 10 to 20% and therefore the receiving and giving of the developer between both are smoothly accomplished and the sensible images free from unevenness may be obtained.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5184278A JPS54143653A (en) | 1978-04-28 | 1978-04-28 | Developing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5184278A JPS54143653A (en) | 1978-04-28 | 1978-04-28 | Developing device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54143653A true JPS54143653A (en) | 1979-11-09 |
JPS622313B2 JPS622313B2 (en) | 1987-01-19 |
Family
ID=12898100
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5184278A Granted JPS54143653A (en) | 1978-04-28 | 1978-04-28 | Developing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54143653A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57661A (en) * | 1980-06-03 | 1982-01-05 | Minolta Camera Co Ltd | Electrostatic latent image developing method |
JPS5732462A (en) * | 1980-08-06 | 1982-02-22 | Ricoh Co Ltd | Magnetic brush developing device |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0377210U (en) * | 1989-11-24 | 1991-08-02 | ||
JP2013174778A (en) | 2012-02-27 | 2013-09-05 | Canon Inc | Image forming device |
-
1978
- 1978-04-28 JP JP5184278A patent/JPS54143653A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57661A (en) * | 1980-06-03 | 1982-01-05 | Minolta Camera Co Ltd | Electrostatic latent image developing method |
JPS5732462A (en) * | 1980-08-06 | 1982-02-22 | Ricoh Co Ltd | Magnetic brush developing device |
JPH0139106B2 (en) * | 1980-08-06 | 1989-08-18 | Ricoh Kk |
Also Published As
Publication number | Publication date |
---|---|
JPS622313B2 (en) | 1987-01-19 |
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