JPS63187160U - - Google Patents
Info
- Publication number
- JPS63187160U JPS63187160U JP7486987U JP7486987U JPS63187160U JP S63187160 U JPS63187160 U JP S63187160U JP 7486987 U JP7486987 U JP 7486987U JP 7486987 U JP7486987 U JP 7486987U JP S63187160 U JPS63187160 U JP S63187160U
- Authority
- JP
- Japan
- Prior art keywords
- toner concentration
- concentration detection
- detection device
- capacitance diode
- variable capacitance
- 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
- 238000001514 detection method Methods 0.000 claims description 7
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
- G03G15/0848—Arrangements for testing or measuring developer properties or quality, e.g. charge, size, flowability
- G03G15/0849—Detection or control means for the developer concentration
- G03G15/0853—Detection or control means for the developer concentration the concentration being measured by magnetic means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Dry Development In Electrophotography (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987074869U JPH0633484Y2 (ja) | 1987-05-19 | 1987-05-19 | トナ−濃度検出装置 |
| EP88303863A EP0292130B1 (en) | 1987-05-19 | 1988-04-28 | Toner concentration detection |
| DE19883877054 DE3877054T2 (de) | 1987-05-19 | 1988-04-28 | Tonerkonzentrationsermittlung. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987074869U JPH0633484Y2 (ja) | 1987-05-19 | 1987-05-19 | トナ−濃度検出装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63187160U true JPS63187160U (US07655688-20100202-C00086.png) | 1988-11-30 |
| JPH0633484Y2 JPH0633484Y2 (ja) | 1994-08-31 |
Family
ID=13559768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987074869U Expired - Lifetime JPH0633484Y2 (ja) | 1987-05-19 | 1987-05-19 | トナ−濃度検出装置 |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0292130B1 (US07655688-20100202-C00086.png) |
| JP (1) | JPH0633484Y2 (US07655688-20100202-C00086.png) |
| DE (1) | DE3877054T2 (US07655688-20100202-C00086.png) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5648514A (en) * | 1994-12-29 | 1997-07-15 | Allergan | Substituted acetylenes having retinoid-like biological activity |
| JP5721365B2 (ja) * | 2010-08-23 | 2015-05-20 | キヤノン株式会社 | 磁性体粉濃度検知装置及びこの検知装置を用いた画像形成装置 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56120045A (en) * | 1980-02-16 | 1981-09-21 | Nippon Air Brake Co | Detector |
| JPS5813013A (ja) * | 1981-07-17 | 1983-01-25 | Nippon Technical Co Ltd | 同調回路 |
| JPS5836018A (ja) * | 1981-08-27 | 1983-03-02 | Mitsubishi Electric Corp | Ｆｍ受信機 |
| JPS59141817A (ja) * | 1983-02-03 | 1984-08-14 | Nippon Technical Co Ltd | 同調器 |
| JPS61149859A (ja) * | 1984-12-24 | 1986-07-08 | Tdk Corp | 磁気的検知装置 |
| JPS61149858A (ja) * | 1984-12-24 | 1986-07-08 | Tdk Corp | 磁気的検知装置 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1984002202A1 (en) * | 1982-11-29 | 1984-06-07 | Hitachi Metals Ltd | Apparatus for controlling toner concentration in developer |
| JPS60154275A (ja) * | 1984-01-24 | 1985-08-13 | Hitachi Metals Ltd | トナ−センサ− |
-
1987
- 1987-05-19 JP JP1987074869U patent/JPH0633484Y2/ja not_active Expired - Lifetime
-
1988
- 1988-04-28 EP EP88303863A patent/EP0292130B1/en not_active Expired - Lifetime
- 1988-04-28 DE DE19883877054 patent/DE3877054T2/de not_active Expired - Lifetime
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56120045A (en) * | 1980-02-16 | 1981-09-21 | Nippon Air Brake Co | Detector |
| JPS5813013A (ja) * | 1981-07-17 | 1983-01-25 | Nippon Technical Co Ltd | 同調回路 |
| JPS5836018A (ja) * | 1981-08-27 | 1983-03-02 | Mitsubishi Electric Corp | Ｆｍ受信機 |
| JPS59141817A (ja) * | 1983-02-03 | 1984-08-14 | Nippon Technical Co Ltd | 同調器 |
| JPS61149859A (ja) * | 1984-12-24 | 1986-07-08 | Tdk Corp | 磁気的検知装置 |
| JPS61149858A (ja) * | 1984-12-24 | 1986-07-08 | Tdk Corp | 磁気的検知装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0633484Y2 (ja) | 1994-08-31 |
| DE3877054D1 (de) | 1993-02-11 |
| EP0292130A3 (en) | 1989-06-14 |
| DE3877054T2 (de) | 1993-04-29 |
| EP0292130B1 (en) | 1992-12-30 |
| EP0292130A2 (en) | 1988-11-23 |
