JPS55137547A - Method and apparatus for forming color image - Google Patents
Method and apparatus for forming color imageInfo
- Publication number
- JPS55137547A JPS55137547A JP4620779A JP4620779A JPS55137547A JP S55137547 A JPS55137547 A JP S55137547A JP 4620779 A JP4620779 A JP 4620779A JP 4620779 A JP4620779 A JP 4620779A JP S55137547 A JPS55137547 A JP S55137547A
- Authority
- JP
- Japan
- Prior art keywords
- alternating voltage
- images
- alternating
- developing
- supports
- 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
Landscapes
- Magnetic Brush Developing In Electrophotography (AREA)
Abstract
PURPOSE: To improve the sharpness and gradation characteristic of the color images and simplify the apparatus by opposing developer supports and electrostatic image holder by maintaining a specified spacing and applying the alternating voltage of the specified frequency or less to the supports and developing the images.
CONSTITUTION: Electrostatic latent images are formed on the surface of a photosensitive drum 1 and the development is performed by the plural developing devices 16 which are maintained in a noncontact state of a fixed spacing from the drum 1 surface and supply respective color developers. Alternating voltage is applied to the sleeve 1612 of, e.g., yellow developing device 161 of the developing devices 16 by an alternating voltage source 28 and the DC voltage for performing selective development is applied by a Dc voltage source 31. The controlling of the alternating and direct current voltages to be applied is accomplished by a control circuit 26 and drive circuit 27.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4620779A JPS55137547A (en) | 1979-04-16 | 1979-04-16 | Method and apparatus for forming color image |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4620779A JPS55137547A (en) | 1979-04-16 | 1979-04-16 | Method and apparatus for forming color image |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55137547A true JPS55137547A (en) | 1980-10-27 |
JPS6256505B2 JPS6256505B2 (en) | 1987-11-26 |
Family
ID=12740630
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4620779A Granted JPS55137547A (en) | 1979-04-16 | 1979-04-16 | Method and apparatus for forming color image |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55137547A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60159768A (en) * | 1984-01-30 | 1985-08-21 | Konishiroku Photo Ind Co Ltd | Image forming method |
JPS60172062A (en) * | 1984-02-17 | 1985-09-05 | Japan Steel Works Ltd:The | Electrophotographic device |
JPS6126064A (en) * | 1984-07-17 | 1986-02-05 | Konishiroku Photo Ind Co Ltd | Image forming device |
JPS6165262A (en) * | 1984-09-06 | 1986-04-03 | Konishiroku Photo Ind Co Ltd | Image forming method |
JPS61183669A (en) * | 1985-02-08 | 1986-08-16 | Konishiroku Photo Ind Co Ltd | Image forming device |
JPH02167577A (en) * | 1989-11-13 | 1990-06-27 | Konica Corp | Color image forming method |
KR100423459B1 (en) * | 2002-07-02 | 2004-03-18 | 삼성전자주식회사 | color image forming apparatus |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3893418A (en) * | 1974-05-30 | 1975-07-08 | Xerox Corp | Xerographic developing apparatus |
JPS50122240A (en) * | 1973-12-28 | 1975-09-25 | ||
JPS5297745A (en) * | 1976-02-12 | 1977-08-16 | Canon Inc | Forming means for color image |
JPS5360230A (en) * | 1976-11-10 | 1978-05-30 | Fujitsu Ltd | Multi-color print type electrostatic recorder |
-
1979
- 1979-04-16 JP JP4620779A patent/JPS55137547A/en active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50122240A (en) * | 1973-12-28 | 1975-09-25 | ||
US3893418A (en) * | 1974-05-30 | 1975-07-08 | Xerox Corp | Xerographic developing apparatus |
JPS5297745A (en) * | 1976-02-12 | 1977-08-16 | Canon Inc | Forming means for color image |
JPS5360230A (en) * | 1976-11-10 | 1978-05-30 | Fujitsu Ltd | Multi-color print type electrostatic recorder |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60159768A (en) * | 1984-01-30 | 1985-08-21 | Konishiroku Photo Ind Co Ltd | Image forming method |
JPS60172062A (en) * | 1984-02-17 | 1985-09-05 | Japan Steel Works Ltd:The | Electrophotographic device |
JPS6126064A (en) * | 1984-07-17 | 1986-02-05 | Konishiroku Photo Ind Co Ltd | Image forming device |
JPH0464064B2 (en) * | 1984-07-17 | 1992-10-13 | Konishiroku Photo Ind | |
JPS6165262A (en) * | 1984-09-06 | 1986-04-03 | Konishiroku Photo Ind Co Ltd | Image forming method |
JPS61183669A (en) * | 1985-02-08 | 1986-08-16 | Konishiroku Photo Ind Co Ltd | Image forming device |
JPH0519704B2 (en) * | 1985-02-08 | 1993-03-17 | Konishiroku Photo Ind | |
JPH02167577A (en) * | 1989-11-13 | 1990-06-27 | Konica Corp | Color image forming method |
JPH0468630B2 (en) * | 1989-11-13 | 1992-11-02 | Konishiroku Photo Ind | |
KR100423459B1 (en) * | 2002-07-02 | 2004-03-18 | 삼성전자주식회사 | color image forming apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPS6256505B2 (en) | 1987-11-26 |
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