JPS649476A - Multicolor image forming device - Google Patents
Multicolor image forming deviceInfo
- Publication number
- JPS649476A JPS649476A JP62165888A JP16588887A JPS649476A JP S649476 A JPS649476 A JP S649476A JP 62165888 A JP62165888 A JP 62165888A JP 16588887 A JP16588887 A JP 16588887A JP S649476 A JPS649476 A JP S649476A
- Authority
- JP
- Japan
- Prior art keywords
- developing
- developing unit
- gap
- drum
- cam
- 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
- Color Electrophotography (AREA)
Abstract
PURPOSE:To make the density of image plane and gradation in development by respective developers proper by setting the gap at the time of developing between the developing sleeve of a developing unit whose developer electrification quantity is large and an image carrier smaller than the gap between the developing sleeve of a developing unit whose developer electrification quantity is small and the image carrier. CONSTITUTION:The developing units 10A, 10B and 10C are arranged along the marginal part of a photosensitive drum 2 in parallel. When the motor of the developing unit which is selected in the selection of color specifying buttons is turned, a cam 13 fixed to a shaft 12 is turned with the turning of the motor. The cam 13 stops in a state where it presses the abutting part 14 of the developing unit 10. In a state where the cam 13 presses the abutting part 14, the developing unit 10 is made to move to a drum 2 through a spring member 15 and stopped with a small gap previously set between the developing unit 10 and the surface of the drum 2. The gap at the time of developing between the developing sleeve of the developing unit having larger developer electrification quantity of developers respectively incorporated in the developing units 10 and the drum 2 is set smaller than the gap between the developing sleeve of the developing unit having small developer electrification quantity and the drum 2. Thus, the image density and the gradation in the development by the respective developers can be made proper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62165888A JPS649476A (en) | 1987-07-01 | 1987-07-01 | Multicolor image forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62165888A JPS649476A (en) | 1987-07-01 | 1987-07-01 | Multicolor image forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS649476A true JPS649476A (en) | 1989-01-12 |
Family
ID=15820881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62165888A Pending JPS649476A (en) | 1987-07-01 | 1987-07-01 | Multicolor image forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS649476A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100433538B1 (en) * | 2002-02-06 | 2004-05-31 | 삼성전자주식회사 | Apparatus for forming color image using electrophotography |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6057872A (en) * | 1983-09-09 | 1985-04-03 | Canon Inc | Image forming device |
| JPS60238863A (en) * | 1984-05-14 | 1985-11-27 | Toshiba Corp | Image forming device |
-
1987
- 1987-07-01 JP JP62165888A patent/JPS649476A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6057872A (en) * | 1983-09-09 | 1985-04-03 | Canon Inc | Image forming device |
| JPS60238863A (en) * | 1984-05-14 | 1985-11-27 | Toshiba Corp | Image forming device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100433538B1 (en) * | 2002-02-06 | 2004-05-31 | 삼성전자주식회사 | Apparatus for forming color image using electrophotography |
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