JPS5573058A - Electrostatic latent image developing method - Google Patents
Electrostatic latent image developing methodInfo
- Publication number
- JPS5573058A JPS5573058A JP14540478A JP14540478A JPS5573058A JP S5573058 A JPS5573058 A JP S5573058A JP 14540478 A JP14540478 A JP 14540478A JP 14540478 A JP14540478 A JP 14540478A JP S5573058 A JPS5573058 A JP S5573058A
- Authority
- JP
- Japan
- Prior art keywords
- electrostatic latent
- photographic fog
- bias voltage
- images
- recording medium
- 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
- Developing For Electrophotography (AREA)
Abstract
PURPOSE: To obtain the images of sufficient density free from any photographic fog by using two developing devices which act by having a time difference on the same surface of a recording medium and a voltage larger than the voltage at which photographic fog occurs and a bias voltage enough for removing the photographic fog respectively thereto.
CONSTITUTION: Electrostatic latent images 2 having plus surface potentials are formed on the surface of a recording medium 1. The recording medium 1 moves in the arrow direction and is developed by the first and second magnetic brush forming means 3, 4. Magnet rolls 7, 8 are disposed on the inner side of non-magnetic conductive sleeves 5, 6 and magnetic toners 9, 10 are attracted to the outside circumferentical surfaces of the sleeves 5, 6 by magnetic force. A bias voltage of thepolarity opposite from that of the electrostatic latent images 2 is applied to the sleeve 7 and the bias voltage near the residual potentials of the electrostatic latent images 2 is applied to the sleeve 8. First, the toner images 13 of high image density but strong photographic fog are made, thence by developing these again with the samller bias voltage, the normal toner images 14 of sufficient image density and free from any photographic fog are obtained.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14540478A JPS5573058A (en) | 1978-11-27 | 1978-11-27 | Electrostatic latent image developing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14540478A JPS5573058A (en) | 1978-11-27 | 1978-11-27 | Electrostatic latent image developing method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5573058A true JPS5573058A (en) | 1980-06-02 |
Family
ID=15384463
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14540478A Pending JPS5573058A (en) | 1978-11-27 | 1978-11-27 | Electrostatic latent image developing method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5573058A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS575066A (en) * | 1980-06-13 | 1982-01-11 | Hitachi Ltd | Developing method of electrostatic latent image |
JP2010230752A (en) * | 2009-03-26 | 2010-10-14 | Fuji Xerox Co Ltd | Developing device, method of producing developing device, and image forming apparatus |
-
1978
- 1978-11-27 JP JP14540478A patent/JPS5573058A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS575066A (en) * | 1980-06-13 | 1982-01-11 | Hitachi Ltd | Developing method of electrostatic latent image |
JP2010230752A (en) * | 2009-03-26 | 2010-10-14 | Fuji Xerox Co Ltd | Developing device, method of producing developing device, and image forming apparatus |
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