JPS5654447A - Electrophotographic reversal development method - Google Patents
Electrophotographic reversal development methodInfo
- Publication number
- JPS5654447A JPS5654447A JP13032279A JP13032279A JPS5654447A JP S5654447 A JPS5654447 A JP S5654447A JP 13032279 A JP13032279 A JP 13032279A JP 13032279 A JP13032279 A JP 13032279A JP S5654447 A JPS5654447 A JP S5654447A
- Authority
- JP
- Japan
- Prior art keywords
- area
- photoreceptor
- potential
- substrate
- exposed
- 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
- Magnetic Brush Developing In Electrophotography (AREA)
- Developing For Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
Abstract
PURPOSE: To enable to obtain superior development free of under development or the like in the middle area of an image even in case of developing a large area, by applying a bias voltage reverse in polarity to potential on nonexposed areas to the substrate of a photoreceptor.
CONSTITUTION: Photosensitive layer 6 on substrate 10 of a photoreceptor is positively charged, exposed to an original light image, and developed. At that time, a negative voltage reverse in polarity to positive potential VE on nonexposed area E is applied to photoreceptor substrate 5, resulting in converting the potential on exposed area F into negative potential VF and producing electric field 8 between positively charged colored particles 9 and exposed area F all over area F, thus permitting large area development free of an edge effect as shown in D to be made. In the above example, a positive type photoreceptor is used, but even when a negative type photoreceptor is used, similar operation is carried out except reverse charge signs.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13032279A JPS5654447A (en) | 1979-10-09 | 1979-10-09 | Electrophotographic reversal development method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13032279A JPS5654447A (en) | 1979-10-09 | 1979-10-09 | Electrophotographic reversal development method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5654447A true JPS5654447A (en) | 1981-05-14 |
Family
ID=15031558
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13032279A Pending JPS5654447A (en) | 1979-10-09 | 1979-10-09 | Electrophotographic reversal development method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5654447A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS581165A (en) * | 1981-06-26 | 1983-01-06 | Canon Inc | Electrophotographic method |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52129438A (en) * | 1976-04-22 | 1977-10-29 | Ricoh Co Ltd | Reverse developing method by magnetic brush |
JPS54115233A (en) * | 1978-02-28 | 1979-09-07 | Ricoh Co Ltd | Reversal development process |
-
1979
- 1979-10-09 JP JP13032279A patent/JPS5654447A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52129438A (en) * | 1976-04-22 | 1977-10-29 | Ricoh Co Ltd | Reverse developing method by magnetic brush |
JPS54115233A (en) * | 1978-02-28 | 1979-09-07 | Ricoh Co Ltd | Reversal development process |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS581165A (en) * | 1981-06-26 | 1983-01-06 | Canon Inc | Electrophotographic method |
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