JPS5793364A - Formation of electrostatic latent image - Google Patents
Formation of electrostatic latent imageInfo
- Publication number
- JPS5793364A JPS5793364A JP16989880A JP16989880A JPS5793364A JP S5793364 A JPS5793364 A JP S5793364A JP 16989880 A JP16989880 A JP 16989880A JP 16989880 A JP16989880 A JP 16989880A JP S5793364 A JPS5793364 A JP S5793364A
- Authority
- JP
- Japan
- Prior art keywords
- drum
- electrostatically
- latent image
- electrostatic
- potential
- 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
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
- G03G15/045—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for charging or discharging distinct portions of the charge pattern on the recording material, e.g. for contrast enhancement or discharging non-image areas
- G03G15/047—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for charging or discharging distinct portions of the charge pattern on the recording material, e.g. for contrast enhancement or discharging non-image areas for discharging non-image areas
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electrophotography Using Other Than Carlson'S Method (AREA)
Abstract
PURPOSE:To permit sure electric discharging with a pin electrode and make the formation of good latnet images free from dot drop-out possible by removing the electrostatic charge charged unifomly on an electrostatic latent image forming surface from the regions other than reproduced image parts. CONSTITUTION:A drum 20b coated with a dielectric film 20a on the surface is used as a recording drum 20, and is uniformly electrostatically cahrged with an electrostatic charging corotron 21. Next, electric discharge is induced between a pin electrode 22 disposed without contacting with the drum 20 and the drum 20 to form latent images with said electrode 22 in the margin parts other than the image patterns, and the developing bias potential of a magnetic brush developing machine 28 is set at the intermediate potential of the potential in the latent image parts and the uniformly charged part to stick the negatively charged toner in the electrostatically on the remained uniformly charged part, thence the positive electric charge of the reversed polarity from the toner is applied from the rear of plain paper 25 with a transfer corotron 24, whereby the latent images are electrostatically transferred. Thereby, the good latent images free from dot drop-out are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16989880A JPS5793364A (en) | 1980-12-02 | 1980-12-02 | Formation of electrostatic latent image |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16989880A JPS5793364A (en) | 1980-12-02 | 1980-12-02 | Formation of electrostatic latent image |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5793364A true JPS5793364A (en) | 1982-06-10 |
Family
ID=15895004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16989880A Pending JPS5793364A (en) | 1980-12-02 | 1980-12-02 | Formation of electrostatic latent image |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5793364A (en) |
-
1980
- 1980-12-02 JP JP16989880A patent/JPS5793364A/en active Pending
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