JPS5489733A - Reversal developing method - Google Patents
Reversal developing methodInfo
- Publication number
- JPS5489733A JPS5489733A JP15968677A JP15968677A JPS5489733A JP S5489733 A JPS5489733 A JP S5489733A JP 15968677 A JP15968677 A JP 15968677A JP 15968677 A JP15968677 A JP 15968677A JP S5489733 A JPS5489733 A JP S5489733A
- Authority
- JP
- Japan
- Prior art keywords
- sleeve
- electroconductive
- toner
- power
- voltage
- 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)
- Control Or Security For Electrophotography (AREA)
- Magnetic Brush Developing In Electrophotography (AREA)
- Developing For Electrophotography (AREA)
Abstract
PURPOSE: To form a reversal image of good quality by applying the voltage wherein nearly the maximum potential of an electrostatic latent image to be developed is superposed with AC of suitable intensity onto an electroconductive sleeve to which a magnetically signal ingredient toner is adsorbed.
CONSTITUTION: Magnetic toner 40 in the developing receptacle 31 of non-magnetic electroconductive body grounded is transported upwardly by rotary magnet belt 32 disposed at the outside of the side wall of the receptacle 31 so that the toner 40 is held on the surface of electroconductive sleeve 36 disposed at the top which rotates in the direction of an arrow. The electroconductive sleeve 36 uses bias electric power V formed from DC power V1 and AC power V2 is series, and the sleeve 36 is applied by the special bias voltage via protecting resistor R. For example, in case the potential of non-image portion of the photoreceptor 35 is +1000V, the voltage which varies between 500W1000V with 200-cycles wherein V1 is DC +750 V and V2 is AC 250 V, 200-cycles is applied to the sleeve 36.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15968677A JPS5489733A (en) | 1977-12-27 | 1977-12-27 | Reversal developing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15968677A JPS5489733A (en) | 1977-12-27 | 1977-12-27 | Reversal developing method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5489733A true JPS5489733A (en) | 1979-07-17 |
Family
ID=15699096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15968677A Pending JPS5489733A (en) | 1977-12-27 | 1977-12-27 | Reversal developing method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5489733A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5837657A (en) * | 1982-07-21 | 1983-03-04 | Canon Inc | Developing method and its apparatus |
-
1977
- 1977-12-27 JP JP15968677A patent/JPS5489733A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5837657A (en) * | 1982-07-21 | 1983-03-04 | Canon Inc | Developing method and its apparatus |
JPS6316739B2 (en) * | 1982-07-21 | 1988-04-11 | Canon Kk |
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