JPS5481855A - Two color print type electrostatic recoder - Google Patents
Two color print type electrostatic recoderInfo
- Publication number
- JPS5481855A JPS5481855A JP14886177A JP14886177A JPS5481855A JP S5481855 A JPS5481855 A JP S5481855A JP 14886177 A JP14886177 A JP 14886177A JP 14886177 A JP14886177 A JP 14886177A JP S5481855 A JPS5481855 A JP S5481855A
- Authority
- JP
- Japan
- Prior art keywords
- positive
- charged
- kinds
- drum
- negative
- 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 improve the easy tendency of producing back density and the need for forming electrostatic latent images of two kinds of polarities, positive and negative, by providing one set of image forming part and two developing devices and using magnetic brush inversion development.
CONSTITUTION: A recording drum 6 is evenly charged to certain polarity by a Corotron 22. The application of voltages of two kinds of levels from the pin driver 24 connected to a character generator 13 and control circuit 14 causes a pin electrode 1 to discharge and remove the charges on a drum 6, thereby forming electrostatic images of two kinds of levels. A positive or negative bias is applied to magnetic brush developing device 11, 12 respectively from development biasing power sources 25, 26 and the colored toner having been charged to negative deposits on the high latent image potential part on the drum 6 and the colored toner having been charged positive on the low latent image potential part. The two color toner images are charged positive by a force charging corona discharger 16, are transferred to plane paper 18 by a transfer Corotron 17 and are fixed by a fixing device 19.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14886177A JPS5481855A (en) | 1977-12-13 | 1977-12-13 | Two color print type electrostatic recoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14886177A JPS5481855A (en) | 1977-12-13 | 1977-12-13 | Two color print type electrostatic recoder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5481855A true JPS5481855A (en) | 1979-06-29 |
| JPS6158828B2 JPS6158828B2 (en) | 1986-12-13 |
Family
ID=15462370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14886177A Granted JPS5481855A (en) | 1977-12-13 | 1977-12-13 | Two color print type electrostatic recoder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5481855A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63123063A (en) * | 1986-11-03 | 1988-05-26 | ゼロツクス コーポレーシヨン | Image printer and method by black and several stressed colors with single pass |
| JPS63146056A (en) * | 1986-12-10 | 1988-06-18 | Canon Inc | Image forming method |
| JPS63172180A (en) * | 1986-12-29 | 1988-07-15 | ゼロツクス コーポレーシヨン | Printer |
| US4937630A (en) * | 1986-12-10 | 1990-06-26 | Canon Kabushiki Kaisha | Image forming apparatus employing non-magnetic and magnetic toner |
| JPH02296256A (en) * | 1989-04-24 | 1990-12-06 | Xerox Corp | Dichromatic image formation |
| JPH03137660A (en) * | 1989-08-03 | 1991-06-12 | Xerox Corp | Level printing method and device |
-
1977
- 1977-12-13 JP JP14886177A patent/JPS5481855A/en active Granted
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63123063A (en) * | 1986-11-03 | 1988-05-26 | ゼロツクス コーポレーシヨン | Image printer and method by black and several stressed colors with single pass |
| JPS63146056A (en) * | 1986-12-10 | 1988-06-18 | Canon Inc | Image forming method |
| US4937630A (en) * | 1986-12-10 | 1990-06-26 | Canon Kabushiki Kaisha | Image forming apparatus employing non-magnetic and magnetic toner |
| JPS63172180A (en) * | 1986-12-29 | 1988-07-15 | ゼロツクス コーポレーシヨン | Printer |
| JPH02296256A (en) * | 1989-04-24 | 1990-12-06 | Xerox Corp | Dichromatic image formation |
| JPH03137660A (en) * | 1989-08-03 | 1991-06-12 | Xerox Corp | Level printing method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6158828B2 (en) | 1986-12-13 |
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