JPS5528059A - Surface potential detecting device of charged body - Google Patents
Surface potential detecting device of charged bodyInfo
- Publication number
- JPS5528059A JPS5528059A JP10141078A JP10141078A JPS5528059A JP S5528059 A JPS5528059 A JP S5528059A JP 10141078 A JP10141078 A JP 10141078A JP 10141078 A JP10141078 A JP 10141078A JP S5528059 A JPS5528059 A JP S5528059A
- Authority
- JP
- Japan
- Prior art keywords
- charged
- potential
- image
- latent images
- charged body
- 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.)
- Granted
Links
Landscapes
- Control Or Security For Electrophotography (AREA)
Abstract
PURPOSE: To enable eanble direct detection of charged part potential and non- charged part potential, by providing a potential detecting pattern, which is formed with charged part and non-charged part in the form of checker flag, in the non- image part of the charged body.
CONSTITUTION: Charged parts 1c . and non-charged parts 21 . and 22 . are provided in the form of checker flag in the non-image part 1b which is connected to an image part 1a of a rotating charged body 1. Latent images are formed on the charged parts 1c . according to the uniform charging by a corotron 5 and exposure, and along with the rotation of the charged body 1, alternating latent images are detected by a counter electrode 3 which composes a capacitor together with the charged body 1, and the electrode 3 generates displacement current which is proportional to the charged amount and difference of charged part 1a and non-charged part 1b and is also proportional to the frequency of the alternating latent images, without requiring complicated chopper or mechanical precision. Therefore, the potential in the non-charged part 1b and charged part 1a may be directly detected by an electrometer 4, and the feedback of the charging system may be conrolled, so that the contrast of the image can be effectively stabilized.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53101410A JPS605944B2 (en) | 1978-08-22 | 1978-08-22 | Charged object surface potential detection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53101410A JPS605944B2 (en) | 1978-08-22 | 1978-08-22 | Charged object surface potential detection device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5528059A true JPS5528059A (en) | 1980-02-28 |
JPS605944B2 JPS605944B2 (en) | 1985-02-14 |
Family
ID=14299937
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53101410A Expired JPS605944B2 (en) | 1978-08-22 | 1978-08-22 | Charged object surface potential detection device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS605944B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56149062A (en) * | 1980-04-21 | 1981-11-18 | Ando Electric Co Ltd | Device for stabilizing surface potential of rotary drum |
JPS573051A (en) * | 1980-06-09 | 1982-01-08 | Matsushita Electric Ind Co Ltd | Potential measurement device of electronic copying machine |
JPS5814845A (en) * | 1981-07-20 | 1983-01-27 | Canon Inc | Detection of potential |
US20170090334A1 (en) * | 2015-09-30 | 2017-03-30 | Kyocera Document Solutions Inc. | Image forming apparatus that ensures setting surface potential of photoreceptor drum with simple constitution |
-
1978
- 1978-08-22 JP JP53101410A patent/JPS605944B2/en not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56149062A (en) * | 1980-04-21 | 1981-11-18 | Ando Electric Co Ltd | Device for stabilizing surface potential of rotary drum |
JPS6146830B2 (en) * | 1980-04-21 | 1986-10-16 | Ando Electric | |
JPS573051A (en) * | 1980-06-09 | 1982-01-08 | Matsushita Electric Ind Co Ltd | Potential measurement device of electronic copying machine |
JPS5814845A (en) * | 1981-07-20 | 1983-01-27 | Canon Inc | Detection of potential |
JPH0563791B2 (en) * | 1981-07-20 | 1993-09-13 | Canon Kk | |
US20170090334A1 (en) * | 2015-09-30 | 2017-03-30 | Kyocera Document Solutions Inc. | Image forming apparatus that ensures setting surface potential of photoreceptor drum with simple constitution |
US9885972B2 (en) * | 2015-09-30 | 2018-02-06 | Kyocera Document Solutions Inc. | Image forming apparatus that ensures setting surface potential of photoreceptor drum with simple constitution |
Also Published As
Publication number | Publication date |
---|---|
JPS605944B2 (en) | 1985-02-14 |
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