JPS645708B2 - - Google Patents
Info
- Publication number
- JPS645708B2 JPS645708B2 JP8246180A JP8246180A JPS645708B2 JP S645708 B2 JPS645708 B2 JP S645708B2 JP 8246180 A JP8246180 A JP 8246180A JP 8246180 A JP8246180 A JP 8246180A JP S645708 B2 JPS645708 B2 JP S645708B2
- Authority
- JP
- Japan
- Prior art keywords
- detection
- developer
- detection surface
- detection plate
- plate
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 45
- 239000000843 powder Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 5
- 238000005054 agglomeration Methods 0.000 claims description 2
- 230000002776 aggregation Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- G03G15/0856—Detection or control means for the developer level
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Dry Development In Electrophotography (AREA)
Description
【発明の詳細な説明】
本発明は粉体現像剤有無検知装置、特に複写
機・記録機等の画像形成装置に用いる現像器の現
像剤有無検知装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a powder developer presence/absence detection device, and more particularly to a developer presence/absence detection device for a developing unit used in an image forming apparatus such as a copying machine or a recording machine.
従来、この種の検知装置として種々の方法が提
案されている。例えば粉体現像剤（以下現像剤と
略記する）の検知手段としては光による検知手
段、磁気による検知手段、重量による検知手段等
が一般的なものであつた。最近、その他の検知手
段として、現像剤が触れると振動状態を変化させ
る検知板を現像器内の定められたレベル位置に設
け、その検知板の振動状態を電気的に検知するこ
とにより、現像剤が定められたレベル以上あるか
否かを検知する検知手段が提供されている。 Conventionally, various methods have been proposed for this type of detection device. For example, as a detection means for a powder developer (hereinafter abbreviated as developer), a light detection means, a magnetic detection means, a weight detection means, etc. have been commonly used. Recently, as another detection means, a detection plate that changes the vibration state when the developer comes into contact with it is installed at a predetermined level position in the developing device, and the vibration state of the detection plate is electrically detected. Detection means is provided for detecting whether or not the amount of water exceeds a predetermined level.
この検知装置は上記の他の検知手段に比べて構
成が簡単であるが誤検知を生じやすい。即ち第１
図に示すように現像器箱１に取付けた検知器２の
検知板３を器箱１内において垂直に配置し、或い
は第２図に示すように検知板３を垂直面に対して
若干下向きに配置した構成である。そのため、検
知板３に面する現像剤４が凝固して空隙あるいは
見かけ上比重の軽い部分５が生ずると、この部分
５のために現像剤４が「ある」にもかかわらず
「なし」と検知してしまうものである。 Although this detection device has a simpler configuration than the other detection means described above, it is likely to cause false detection. That is, the first
As shown in the figure, the detection plate 3 of the detector 2 attached to the developer box 1 is arranged vertically in the developer box 1, or as shown in Fig. 2, the detection plate 3 is placed slightly downward with respect to the vertical plane. This is the arranged configuration. Therefore, when the developer 4 facing the detection plate 3 solidifies to form a void or a portion 5 with an apparently light specific gravity, it is detected that the developer 4 is “absent” even though it is “present” due to this portion 5. It's something you end up doing.
そこで、この誤検知を解消するために、検知板
３をその検知面を若干上向きに傾斜させて配置し
たところ、今度は現像剤４が例えば凝固して振動
面から落下しないため、現像剤４が「ない」にも
かかわらず「ある」と検知することがある。 Therefore, in order to eliminate this false detection, the detection plate 3 was arranged with its detection surface slightly tilted upward, but this time, the developer 4 would solidify and not fall from the vibrating surface. Sometimes it is detected that there is something even though it is not there.
本発明は上記後者のように検知板３をその検知
面を若干上向きに傾斜させて配設するものについ
て検知面に対する現像剤の凝集付着化による誤検
知トラブルを解消することを目的とするもので、
上向き傾斜の検知板検知面に接触回動するか、検
知面への現像剤の凝集を防止できる間隙を保つて
回動する粉体現像剤撹拌部材を設けたものであ
る。 The purpose of the present invention is to solve the problem of false detection caused by agglomeration of developer on the detection surface when the detection plate 3 is arranged with the detection surface slightly inclined upward as in the latter case. ,
A powder developer stirring member is provided that rotates in contact with the upwardly inclined detection plate detection surface or rotates while maintaining a gap that prevents the developer from agglomerating on the detection surface.
第３図は一実施例であり、検知板３を垂直面に
対してα゜傾けてその検知面を上向きに配置し、そ
の検知面に対し間隙ｄを保つて粉体現像剤撹拌棒
６を回動させる。この回動は間欠回転が有効で、
例えば１〜５秒間隙で略30゜づつ揺動させる。 FIG. 3 shows one embodiment, in which the detection plate 3 is tilted at α° with respect to the vertical plane and its detection surface is placed upward, and the powder developer stirring rod 6 is inserted while maintaining a gap d with respect to the detection surface. Rotate. Intermittent rotation is effective for this rotation,
For example, it is swung approximately 30 degrees at intervals of 1 to 5 seconds.
実験の結果、上記の間隙ｄは１〜0.3mm、傾斜
角度αは２〜6゜の範囲において誤検知は生じなか
つた。又、撹拌棒６として可撓性部材を用いこの
可撓部材を検知板３に接触回動させて検知面への
現像剤凝集を防止させることもできる。 As a result of the experiment, no false detection occurred when the above-mentioned gap d was in the range of 1 to 0.3 mm and the inclination angle α was in the range of 2 to 6 degrees. Further, it is also possible to use a flexible member as the stirring rod 6 and rotate the flexible member in contact with the detection plate 3 to prevent the developer from coagulating on the detection surface.
本発明は上記の構成であるから、検知板の検知
面への現像剤の凝集を防止すると共にその検知面
に面する現像剤に空隙あるいは見かけの比重の軽
い部分５の生ずることを防止する。従つて、現像
器内の現像剤が定められたレベル以上あるか否か
を誤まりなく適確に検知することができる効果が
ある。 Since the present invention has the above-mentioned configuration, it is possible to prevent the developer from agglomerating on the detection surface of the detection plate, and also to prevent the formation of voids or portions 5 of apparent light specific gravity in the developer facing the detection surface. Therefore, it is possible to accurately detect whether or not the developer in the developing device is at a predetermined level or higher without error.
第１図・第２図は従来の現像剤有無検知装置の
原理説明図、第３図は本発明の現像剤有無検知装
置の原理説明図である。
１は現像器箱、２は検知器、３は検知板、４は
現像剤、５は空隙部分、６は撹拌棒。
1 and 2 are diagrams explaining the principle of a conventional developer presence/absence detection device, and FIG. 3 is a diagram explaining the principle of a developer presence/absence detection device of the present invention. 1 is a developer box, 2 is a detector, 3 is a detection plate, 4 is a developer, 5 is a gap, and 6 is a stirring bar.
Claims (1)
検知板を現像器内に設けて粉体現像剤の有無を検
知する装置において、上記検知板の検知面を垂直
面に対して若干上向きに配置し、その検知面に接
触回動するか、検知面への現像剤の凝集を防止で
きる間隙を保つて回動する粉体現像剤撹拌部材を
設けたことを特徴とする現像器内の粉体現像剤有
無検知装置。1 In a device that detects the presence or absence of powder developer by installing a detection plate in the developing device that changes its vibration state when it comes into contact with powder developer, the detection surface of the detection plate is arranged slightly upward with respect to the vertical plane. and a powder developer stirring member that rotates in contact with the detection surface or rotates while maintaining a gap that prevents agglomeration of the developer on the detection surface. Developer presence detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8246180A JPS578563A (en) | 1980-06-18 | 1980-06-18 | Powdery developer presence detector in developing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8246180A JPS578563A (en) | 1980-06-18 | 1980-06-18 | Powdery developer presence detector in developing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS578563A JPS578563A (en) | 1982-01-16 |
| JPS645708B2 true JPS645708B2 (en) | 1989-01-31 |
Family
ID=13775140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8246180A Granted JPS578563A (en) | 1980-06-18 | 1980-06-18 | Powdery developer presence detector in developing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS578563A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4959690A (en) * | 1989-02-06 | 1990-09-25 | Imagitek, Inc. | Paddle wheel cross-mixer |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5218575Y2 (en) * | 1972-05-26 | 1977-04-26 | ||
| JPS5444632Y2 (en) * | 1974-05-24 | 1979-12-21 | ||
| JPS5824786B2 (en) * | 1974-08-13 | 1983-05-23 | 株式会社リコー | Toner level control |
| JPS563719Y2 (en) * | 1975-08-01 | 1981-01-27 | ||
| JPS5310471A (en) * | 1976-07-16 | 1978-01-30 | Seiko Epson Corp | Method of time indication for digital watches |
| JPS53125033A (en) * | 1977-04-08 | 1978-11-01 | Canon Inc | Concentration adjusting method for powder material |
| JPS53136844A (en) * | 1977-05-04 | 1978-11-29 | Ricoh Co Ltd | Toner residual quantity detector |
| JPS5722182Y2 (en) * | 1977-08-04 | 1982-05-14 | ||
| JPS5536874A (en) * | 1978-09-08 | 1980-03-14 | Konishiroku Photo Ind Co Ltd | Detection method for toner remainder |
| JPS56167362U (en) * | 1980-05-16 | 1981-12-11 |
-
1980
- 1980-06-18 JP JP8246180A patent/JPS578563A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS578563A (en) | 1982-01-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5036363A (en) | Method of toner detection for replenishment in a developer | |
| JPS645708B2 (en) | ||
| JPH0455307B2 (en) | ||
| JPS5917766B2 (en) | Device for detecting remaining amount of fluid in container | |
| JPS5835564A (en) | Detection for residual quantity of toner | |
| JPS59182474A (en) | Toner feeding device | |
| JPH01167856A (en) | Image density sensor cleaning device for image forming device | |
| JPS6051858A (en) | Detector for remaining amount of toner | |
| US5387964A (en) | Developing apparatus including a partition between a developing roll and a stirring member | |
| JPS61198025A (en) | Toner remaining quantity detecting device | |
| JP3375986B2 (en) | Developing device | |
| JPH04287067A (en) | Developing device | |
| JP3748188B2 (en) | Liner wear detector for centrifugal projectors. | |
| JPH0544601B2 (en) | ||
| US5359396A (en) | Toner density detection method for electrophotographic apparatus | |
| JP2915101B2 (en) | Developer temperature detector | |
| JPS6122051U (en) | Toner density control device for image forming apparatus | |
| JPH0766226B2 (en) | Toner collection device for image forming apparatus | |
| JPS614085A (en) | Dry type developing device | |
| JPS6240647B2 (en) | ||
| JPS59159185A (en) | Developing device of electrostatic latent image | |
| JPS6165464U (en) | ||
| JPS59182475A (en) | Toner feeding device | |
| JPS5854371A (en) | Toner recovery device | |
| JPH0342591A (en) | Powder level detecting device for powder storage chamber |