JPS55110263A - Electrophotographing method and apparatus thereof - Google Patents
Electrophotographing method and apparatus thereofInfo
- Publication number
- JPS55110263A JPS55110263A JP1809379A JP1809379A JPS55110263A JP S55110263 A JPS55110263 A JP S55110263A JP 1809379 A JP1809379 A JP 1809379A JP 1809379 A JP1809379 A JP 1809379A JP S55110263 A JPS55110263 A JP S55110263A
- Authority
- JP
- Japan
- Prior art keywords
- images
- photoreceptor
- charging
- primary
- toner
- 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
- Electrophotography Using Other Than Carlson'S Method (AREA)
- Control Or Security For Electrophotography (AREA)
Abstract
PURPOSE: To permit multiple sheet copying through the utilization of the reproduced latent images by again charging the developed images having been formed on photoreceptor and forming the same latent images thereon.
CONSTITUTION: Negative primary charging is done on the surface of the photoreceptor P comprising providing a photoconductive layer 2 on a conductive substrate 1. Next, the light images of the original 4 having black image parts 4b on white ground part 4a are radiated on the surface thereof the form primary latent images. In this case, in the photoreceptor region Pa opposing to the ground part 4a, the negative charges are discharged through the substrate 1 and the surface potentials thereof considerably decrease. Next, the black toner 5 having been charged positive is supplied on the surface of the photoreceptor P to perform primary development. Next, secondary charging of the polarity opposite from the primary charging is done. Next, the photoreceptor P surface is evenly exposed to form the secondary latent images similar to the primary latent images on the toner 5 images. Next, the black toner 7 having been charged negative is supplied to form the secondary toner images. Next, transfer paper 8 is superposed to transfer the secondary toner images. To perform multiple sheet copying in succession, the processes after the process of secondary charging or forming the secondary latent imges are repeated at high speed.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1809379A JPS55110263A (en) | 1979-02-19 | 1979-02-19 | Electrophotographing method and apparatus thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1809379A JPS55110263A (en) | 1979-02-19 | 1979-02-19 | Electrophotographing method and apparatus thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55110263A true JPS55110263A (en) | 1980-08-25 |
Family
ID=11962010
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1809379A Pending JPS55110263A (en) | 1979-02-19 | 1979-02-19 | Electrophotographing method and apparatus thereof |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55110263A (en) |
-
1979
- 1979-02-19 JP JP1809379A patent/JPS55110263A/en active Pending
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