JPH027422B2 - - Google Patents
Info
- Publication number
- JPH027422B2 JPH027422B2 JP56051319A JP5131981A JPH027422B2 JP H027422 B2 JPH027422 B2 JP H027422B2 JP 56051319 A JP56051319 A JP 56051319A JP 5131981 A JP5131981 A JP 5131981A JP H027422 B2 JPH027422 B2 JP H027422B2
- Authority
- JP
- Japan
- Prior art keywords
- toner
- voltage
- change
- phase difference
- series
- 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.)
- Expired - Lifetime
Links
- 238000001514 detection method Methods 0.000 claims description 28
- 239000003990 capacitor Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 10
- 230000010355 oscillation Effects 0.000 description 9
- 230000007423 decrease Effects 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Dry Development In Electrophotography (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5131981A JPS57165748A (en) | 1981-04-06 | 1981-04-06 | Detection circuit of quantity of toner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5131981A JPS57165748A (en) | 1981-04-06 | 1981-04-06 | Detection circuit of quantity of toner |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57165748A JPS57165748A (en) | 1982-10-12 |
JPH027422B2 true JPH027422B2 (US20030199744A1-20031023-C00003.png) | 1990-02-19 |
Family
ID=12883590
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5131981A Granted JPS57165748A (en) | 1981-04-06 | 1981-04-06 | Detection circuit of quantity of toner |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57165748A (US20030199744A1-20031023-C00003.png) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03121312U (US20030199744A1-20031023-C00003.png) * | 1990-03-12 | 1991-12-12 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007034519A1 (en) * | 2005-09-26 | 2007-03-29 | Giottoindustrial Networking S.A. | Method and apparatus for measuring capacity variations of a condenser |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5511254A (en) * | 1978-07-11 | 1980-01-26 | Ricoh Co Ltd | Toner concentration detector |
-
1981
- 1981-04-06 JP JP5131981A patent/JPS57165748A/ja active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5511254A (en) * | 1978-07-11 | 1980-01-26 | Ricoh Co Ltd | Toner concentration detector |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03121312U (US20030199744A1-20031023-C00003.png) * | 1990-03-12 | 1991-12-12 |
Also Published As
Publication number | Publication date |
---|---|
JPS57165748A (en) | 1982-10-12 |
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