JPS554577A - Electrometer - Google Patents
ElectrometerInfo
- Publication number
- JPS554577A JPS554577A JP7825778A JP7825778A JPS554577A JP S554577 A JPS554577 A JP S554577A JP 7825778 A JP7825778 A JP 7825778A JP 7825778 A JP7825778 A JP 7825778A JP S554577 A JPS554577 A JP S554577A
- Authority
- JP
- Japan
- Prior art keywords
- photoreceptor
- detector
- electrode
- potential
- detecting electrode
- 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
- Developing For Electrophotography (AREA)
- Control Or Security For Electrophotography (AREA)
Abstract
PURPOSE: To considerably increase the electrostatic capacity between a detecting element and a photoreceptor and achieve higher effective sensitivity by forming minute undulations on the surface of the detecting electrode thereby increasing its surface in the surface potential detection of the photoreceptor of a copying machine or the like.
CONSTITUTION: The potentials outputted from a detector 11 in correspondence to the surface potentials by latent images of a photoreceptor 12 are stored in a capacitor 15 via image timing switch 14 after amplification. The switch 14 is closed only at the timing when the leading end part of the electrostatic latent images passes a detector 11, whereby the background potential of said leading end part is stored. This background potential is converted to a bias potential by an arithmetic circuit 16 and is applied to the developing electrode of a magnet brush developing device 17. A guard electrode is provided around the detecting electrode in the detector 11 and the surface of the detecting electrode is physically and chemically processed to be formed with numerous minute undulations on its surface, whereby its surface area is considerably increased.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53078257A JPS6050303B2 (en) | 1978-06-27 | 1978-06-27 | electrometer |
| US06/017,856 US4266870A (en) | 1978-03-09 | 1979-03-06 | Electrostatographic apparatus comprising developing bias means |
| DE2909343A DE2909343C2 (en) | 1978-03-09 | 1979-03-09 | Electrophotographic copier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53078257A JPS6050303B2 (en) | 1978-06-27 | 1978-06-27 | electrometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS554577A true JPS554577A (en) | 1980-01-14 |
| JPS6050303B2 JPS6050303B2 (en) | 1985-11-07 |
Family
ID=13656930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53078257A Expired JPS6050303B2 (en) | 1978-03-09 | 1978-06-27 | electrometer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6050303B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103235195A (en) * | 2013-04-28 | 2013-08-07 | 北京理工大学 | Non-contact static detection device |
| JP2014502727A (en) * | 2010-12-30 | 2014-02-03 | アクサン・テクノロジーズ・インコーポレーテッド | Balanced photodetector system with integrated amplifier used for OCT imaging |
| US10488177B2 (en) | 2010-12-30 | 2019-11-26 | Axsun Technologies, Inc. | Optical coherence tomography (OCT) system having integrated detector and analysis systems |
-
1978
- 1978-06-27 JP JP53078257A patent/JPS6050303B2/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014502727A (en) * | 2010-12-30 | 2014-02-03 | アクサン・テクノロジーズ・インコーポレーテッド | Balanced photodetector system with integrated amplifier used for OCT imaging |
| US10488177B2 (en) | 2010-12-30 | 2019-11-26 | Axsun Technologies, Inc. | Optical coherence tomography (OCT) system having integrated detector and analysis systems |
| CN103235195A (en) * | 2013-04-28 | 2013-08-07 | 北京理工大学 | Non-contact static detection device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6050303B2 (en) | 1985-11-07 |
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