JPH043451U - - Google Patents
Info
- Publication number
- JPH043451U JPH043451U JP4351390U JP4351390U JPH043451U JP H043451 U JPH043451 U JP H043451U JP 4351390 U JP4351390 U JP 4351390U JP 4351390 U JP4351390 U JP 4351390U JP H043451 U JPH043451 U JP H043451U
- Authority
- JP
- Japan
- Prior art keywords
- developer
- toner
- container
- control device
- concentration control
- 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
- 238000001514 detection method Methods 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 1
Landscapes
- Dry Development In Electrophotography (AREA)
Description
第１図は本考案を実施した場合の構成を示す断
面図、第２図は制御回路図、第３図は従来の現像
剤濃度検出装置備えた現像装置を示す図、第４図
は現像剤濃度検出回路図である。
１…側板、２…現像容器、３…マグネツトロー
ラ、４…非磁性スリーブ、５…現像剤、６…撹拌
器、７…撹拌器、８…ドクターブレード、９…感
光ドラム、１０…スクレーパ、１１…検出容器、
１２…濃度検出素子、１３…トナー補給装置、１
４…トナー、１５…補給ローラ、１６…電圧変換
回路、１７…コンパレータ、１８…ＣＰＵ、１９
…トナー補給用モータ、２０…コンパレータ、２
１…圧力検出素子、２２…報知器。
FIG. 1 is a sectional view showing the configuration when the present invention is implemented, FIG. 2 is a control circuit diagram, FIG. 3 is a diagram showing a developing device equipped with a conventional developer concentration detection device, and FIG. 4 is a diagram showing the developer FIG. 3 is a concentration detection circuit diagram. DESCRIPTION OF SYMBOLS 1... Side plate, 2... Developing container, 3... Magnetic roller, 4... Non-magnetic sleeve, 5... Developer, 6... Stirrer, 7... Stirrer, 8... Doctor blade, 9... Photosensitive drum, 10... Scraper, 11...detection container,
12...Concentration detection element, 13...Toner supply device, 1
4... Toner, 15... Supply roller, 16... Voltage conversion circuit, 17... Comparator, 18... CPU, 19
...Toner supply motor, 20...Comparator, 2
1...Pressure detection element, 22...Alarm.
Claims (1)
納する現像容器とトナーを現像容器へ補給するト
ナー補給手段と前記現像容器中の現像剤を記録体
の電気潜像面へ搬送する手段と現像剤の一部を検
出容器内に投入する手段と該検出容器内で現像剤
中のキヤリアとトナーの混合比を計測する計測手
段と前記トナー補給手段から現像容器へのトナー
補給を制御する制御回路よりなる現像剤濃度制御
装置に於いて、検出容器内に現像剤の詰まりを検
出する手段を設けたことを特徴とする現像剤濃度
制御装置。 ２ 請求項１記載の詰まりを検出する手段として
圧力検出素子を用いたことを特徴とする現像剤濃
度制御装置。[Scope of Claim for Utility Model Registration] 1. A developer container containing a developer composed of a carrier and toner, a toner replenishing means for replenishing the toner to the developer container, and a developer in the developer container that is applied to the electrolatent image surface of a recording medium. means for transporting a portion of the developer into the detection container; measurement means for measuring the mixture ratio of carrier and toner in the developer in the detection container; and a means for transporting the toner from the toner supply means to the developer container. A developer concentration control device comprising a control circuit for controlling replenishment, characterized in that a developer concentration control device is provided with means for detecting developer clogging in a detection container. 2. A developer concentration control device characterized in that a pressure detection element is used as the means for detecting clogging according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4351390U JPH043451U (en) | 1990-04-25 | 1990-04-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4351390U JPH043451U (en) | 1990-04-25 | 1990-04-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH043451U true JPH043451U (en) | 1992-01-13 |
Family
ID=31555986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4351390U Pending JPH043451U (en) | 1990-04-25 | 1990-04-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH043451U (en) |
-
1990
- 1990-04-25 JP JP4351390U patent/JPH043451U/ja active Pending
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