JPS6470778A - Image forming device - Google Patents
Image forming deviceInfo
- Publication number
- JPS6470778A JPS6470778A JP62227670A JP22767087A JPS6470778A JP S6470778 A JPS6470778 A JP S6470778A JP 62227670 A JP62227670 A JP 62227670A JP 22767087 A JP22767087 A JP 22767087A JP S6470778 A JPS6470778 A JP S6470778A
- Authority
- JP
- Japan
- Prior art keywords
- image
- area
- band
- developing unit
- drum
- 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
- Dry Development In Electrophotography (AREA)
Abstract
PURPOSE:To form a band-shaped toner image for replenishing toner with a simple and small-sized means by interrupting image exposing light on the image non-formed area of an image carrier and executing primary electrification to said area at a required electric potential so that the band-shaped toner image is formed. CONSTITUTION:A latent image is formed on the photosensitive drum 1 which is the image carrier by erasing an after image by means of a pre-exposure lamp 2, uniformly electrifying by means of a primary electrostatic charging unit 3 and exposing with the image exposing light E, etc., and it is developed in a developing unit 5. Meanwhile, when 1st and 2nd shutters 8 and 9 are controlled to be switched, the light E onto the non-image area of the drum 1 is interrupted and the primary electrification is executed to the non-image area at the electric potential below the developing bias voltage of a developing unit 5 with the pre-exposing light from the lamp 2 through the reflecting surface 8b of a shutter 8. Thus, the band-shaped toner image is formed on the non-image area of the drum 1 through the developing unit 5 and the performance of cleaning can be enhanced. And the replenishment of reused toner can be favorably executed with a simple and small-sized movable shutter means.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62227670A JPS6470778A (en) | 1987-09-11 | 1987-09-11 | Image forming device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62227670A JPS6470778A (en) | 1987-09-11 | 1987-09-11 | Image forming device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6470778A true JPS6470778A (en) | 1989-03-16 |
Family
ID=16864490
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62227670A Pending JPS6470778A (en) | 1987-09-11 | 1987-09-11 | Image forming device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6470778A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61277978A (en) * | 1985-06-04 | 1986-12-08 | Canon Inc | Image forming device |
-
1987
- 1987-09-11 JP JP62227670A patent/JPS6470778A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61277978A (en) * | 1985-06-04 | 1986-12-08 | Canon Inc | Image forming device |
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