DE3877054T2 - Tonerkonzentrationsermittlung. - Google Patents
Tonerkonzentrationsermittlung.Info
- Publication number
- DE3877054T2 DE3877054T2 DE19883877054 DE3877054T DE3877054T2 DE 3877054 T2 DE3877054 T2 DE 3877054T2 DE 19883877054 DE19883877054 DE 19883877054 DE 3877054 T DE3877054 T DE 3877054T DE 3877054 T2 DE3877054 T2 DE 3877054T2
- Authority
- DE
- Germany
- Prior art keywords
- toner concentration
- diode
- voltage
- circuit
- vcd
- 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
- 239000003990 capacitor Substances 0.000 claims description 29
- 238000004804 winding Methods 0.000 description 22
- 230000008878 coupling Effects 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
- 238000011156 evaluation Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000003985 ceramic capacitor Substances 0.000 description 3
- 230000002411 adverse Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
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)
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 |
---|---|
DE3877054D1 DE3877054D1 (de) | 1993-02-11 |
DE3877054T2 true DE3877054T2 (de) | 1993-04-29 |
Family
ID=13559768
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19883877054 Expired - Lifetime DE3877054T2 (de) | 1987-05-19 | 1988-04-28 | Tonerkonzentrationsermittlung. |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0292130B1 (sv) |
JP (1) | JPH0633484Y2 (sv) |
DE (1) | DE3877054T2 (sv) |
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 |
Family Cites Families (8)
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 |
WO1984002202A1 (en) * | 1982-11-29 | 1984-06-07 | Hitachi Metals Ltd | Apparatus for controlling toner concentration in developer |
JPS59141817A (ja) * | 1983-02-03 | 1984-08-14 | Nippon Technical Co Ltd | 同調器 |
JPS60154275A (ja) * | 1984-01-24 | 1985-08-13 | Hitachi Metals Ltd | トナ−センサ− |
JPS61149858A (ja) * | 1984-12-24 | 1986-07-08 | Tdk Corp | 磁気的検知装置 |
JPS61149859A (ja) * | 1984-12-24 | 1986-07-08 | Tdk Corp | 磁気的検知装置 |
-
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
Also Published As
Publication number | Publication date |
---|---|
EP0292130B1 (en) | 1992-12-30 |
JPS63187160U (sv) | 1988-11-30 |
JPH0633484Y2 (ja) | 1994-08-31 |
EP0292130A3 (en) | 1989-06-14 |
EP0292130A2 (en) | 1988-11-23 |
DE3877054D1 (de) | 1993-02-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8320 | Willingness to grant licences declared (paragraph 23) |