JPS5562465A - Electronic copier - Google Patents
Electronic copierInfo
- Publication number
- JPS5562465A JPS5562465A JP13536778A JP13536778A JPS5562465A JP S5562465 A JPS5562465 A JP S5562465A JP 13536778 A JP13536778 A JP 13536778A JP 13536778 A JP13536778 A JP 13536778A JP S5562465 A JPS5562465 A JP S5562465A
- Authority
- JP
- Japan
- Prior art keywords
- drum
- transfer
- transfer paper
- toner image
- charged
- 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
Abstract
PURPOSE: To enable secure and easy separation of transfer paper from the drum, by controlling the transfer device so that the electrostatic charge amount be smaller than at the time of transfer until the front end of transfer paper passes the transfer position of photosensitive drum by a specified distance.
CONSTITUTION: A transfer paper 11 is electrostatically charged in the reverse polarity of the toner image developed on a photosensitive drum 1 by a transfer device 5, and the toner image on the drum 1 is transferred on the transfer paper 11. This device 5 is also used as a charging device for separation 14, and the transfer paper 11 is charged so that the charge amount be smaller than at the time of transfer position of the drum 1 by a specified distance. Therefore, due to the toner image of the drum 1 charged in reverse polarity, the part of specified width from the end of transfer paper 11 is not electrostatically attracted to the drum 1, so that the transfer paper 11 may be easily and securely separated from the drum 1. The same effect will be obtained when the transfer device and charging device for separation are provided separately.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13536778A JPS5562465A (en) | 1978-11-02 | 1978-11-02 | Electronic copier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13536778A JPS5562465A (en) | 1978-11-02 | 1978-11-02 | Electronic copier |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5562465A true JPS5562465A (en) | 1980-05-10 |
Family
ID=15150065
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13536778A Pending JPS5562465A (en) | 1978-11-02 | 1978-11-02 | Electronic copier |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5562465A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4362378A (en) * | 1979-08-21 | 1982-12-07 | Roneo Alcatel Limited | Paper feed and image transfer for electrostatographic copiers and duplicators |
US5084737A (en) * | 1990-09-24 | 1992-01-28 | Eastman Kodak Company | Image transfer method and apparatus wherein the application of the transfer bias is delayed as a function of humidity |
US5200784A (en) * | 1989-02-25 | 1993-04-06 | Fujitsu Limited | Transferring device controlled for preventing the leading edge of a sheet from being excessively charged |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS502542A (en) * | 1973-02-26 | 1975-01-11 | ||
JPS50108927A (en) * | 1974-02-01 | 1975-08-27 | ||
JPS5220034A (en) * | 1975-08-06 | 1977-02-15 | Xerox Corp | Image inverter |
-
1978
- 1978-11-02 JP JP13536778A patent/JPS5562465A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS502542A (en) * | 1973-02-26 | 1975-01-11 | ||
JPS50108927A (en) * | 1974-02-01 | 1975-08-27 | ||
JPS5220034A (en) * | 1975-08-06 | 1977-02-15 | Xerox Corp | Image inverter |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4362378A (en) * | 1979-08-21 | 1982-12-07 | Roneo Alcatel Limited | Paper feed and image transfer for electrostatographic copiers and duplicators |
US5200784A (en) * | 1989-02-25 | 1993-04-06 | Fujitsu Limited | Transferring device controlled for preventing the leading edge of a sheet from being excessively charged |
US5084737A (en) * | 1990-09-24 | 1992-01-28 | Eastman Kodak Company | Image transfer method and apparatus wherein the application of the transfer bias is delayed as a function of humidity |
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