JPS5838162U - Toner concentration detection circuit - Google Patents
Toner concentration detection circuitInfo
- Publication number
- JPS5838162U JPS5838162U JP13307981U JP13307981U JPS5838162U JP S5838162 U JPS5838162 U JP S5838162U JP 13307981 U JP13307981 U JP 13307981U JP 13307981 U JP13307981 U JP 13307981U JP S5838162 U JPS5838162 U JP S5838162U
- Authority
- JP
- Japan
- Prior art keywords
- detection circuit
- toner concentration
- concentration detection
- toner
- changes according
- 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.)
- Pending
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Dry Development In Electrophotography (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
添付図面は本考案の１実施例を示す現像装置の側断面図
及びそれに付設されるトナー濃度検出回路の回路図であ
る。
１７・・・・・・検知コイル、１９・・・・・・発振回
路（検知発振回路）、２３・・・・・・タイマ、２４．
２５・・・・・・カウンタ、２６・・・・・・比較回路
。The accompanying drawings are a side sectional view of a developing device and a circuit diagram of a toner concentration detection circuit attached thereto, showing one embodiment of the present invention. 17...Detection coil, 19...Oscillation circuit (detection oscillation circuit), 23...Timer, 24.
25...Counter, 26...Comparison circuit.
Claims (1)
検知コイルを含む発振回路を備え、検知コイルのインダ
クタンスの変化に従って変化する発振周波数に基づいて
トナー補給信号を発生するトナー濃度検出回路において
、上記発振周波数をデジタル処理することを特徴とする
トナー濃度検出回路。The toner concentration detection circuit includes an oscillation circuit including a detection coil whose inductance changes according to the amount of toner passing through, and generates a toner replenishment signal based on the oscillation frequency that changes according to the change in the inductance of the detection coil. A toner concentration detection circuit characterized by processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13307981U JPS5838162U (en) | 1981-09-09 | 1981-09-09 | Toner concentration detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13307981U JPS5838162U (en) | 1981-09-09 | 1981-09-09 | Toner concentration detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5838162U true JPS5838162U (en) | 1983-03-12 |
Family
ID=29926558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13307981U Pending JPS5838162U (en) | 1981-09-09 | 1981-09-09 | Toner concentration detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5838162U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6375770A (en) * | 1986-09-19 | 1988-04-06 | Ricoh Co Ltd | Toner concentration controller |
| WO2005093403A1 (en) * | 2004-03-26 | 2005-10-06 | Diesel United, Ltd. | Magnetic substance concentration measuring apparatus, determination sensitivity improving method, zero-point compensation method, and zero-point correction method |
| JP2005299459A (en) * | 2004-04-09 | 2005-10-27 | Diesel United:Kk | Engine |
| JP2016106261A (en) * | 2016-02-05 | 2016-06-16 | コニカミノルタ株式会社 | Image forming apparatus |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5119540A (en) * | 1974-07-17 | 1976-02-16 | Savin Business Machines Corp | Choshokuzainonodokanshi oyobi hokyusochi |
| JPS5643556A (en) * | 1979-09-19 | 1981-04-22 | Toshiba Corp | Concentration control device of developer |
-
1981
- 1981-09-09 JP JP13307981U patent/JPS5838162U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5119540A (en) * | 1974-07-17 | 1976-02-16 | Savin Business Machines Corp | Choshokuzainonodokanshi oyobi hokyusochi |
| JPS5643556A (en) * | 1979-09-19 | 1981-04-22 | Toshiba Corp | Concentration control device of developer |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6375770A (en) * | 1986-09-19 | 1988-04-06 | Ricoh Co Ltd | Toner concentration controller |
| WO2005093403A1 (en) * | 2004-03-26 | 2005-10-06 | Diesel United, Ltd. | Magnetic substance concentration measuring apparatus, determination sensitivity improving method, zero-point compensation method, and zero-point correction method |
| JP2005299459A (en) * | 2004-04-09 | 2005-10-27 | Diesel United:Kk | Engine |
| WO2005100757A1 (en) * | 2004-04-09 | 2005-10-27 | Diesel United, Ltd. | Motion engine |
| JP2016106261A (en) * | 2016-02-05 | 2016-06-16 | コニカミノルタ株式会社 | Image forming apparatus |
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