JPS58194042A - Method for detecting electrophotographic developing ability - Google Patents
Method for detecting electrophotographic developing abilityInfo
- Publication number
- JPS58194042A JPS58194042A JP57076568A JP7656882A JPS58194042A JP S58194042 A JPS58194042 A JP S58194042A JP 57076568 A JP57076568 A JP 57076568A JP 7656882 A JP7656882 A JP 7656882A JP S58194042 A JPS58194042 A JP S58194042A
- Authority
- JP
- Japan
- Prior art keywords
- developer
- detection
- developing ability
- resin
- silicone resin
- 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
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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Dry Development In Electrophotography (AREA)
- Developing Agents For Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、トナー及びキャリヤーから成る乾式２成分
系電子−写真現像剤の現像能力検知方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for detecting the developing ability of a dry two-component electro-photographic developer comprising a toner and a carrier.
上記構成の現像剤を用いて電子写真法により形成された
静電潜像の現像を行なう場合は、現像枚数を重ねるに従
ってトナーが消費され、現像剤のトナーぬ度が低下し、
これに伴って現像能力も次第に低下して行く。そこで適
時現像剤の現像能力を検知してｌ・ナーを補給すること
が必要になる。When developing an electrostatic latent image formed by electrophotography using a developer having the above configuration, as the number of sheets to be developed increases, toner is consumed and the toner content of the developer decreases.
Along with this, the developing ability also gradually decreases. Therefore, it is necessary to detect the developing ability of the developer and replenish the l/toner at an appropriate time.
現像剤の現像能力の検知方法としては、感光体上に検知
パターンの潜像を形成り１、これを被測定現像剤で現（
６Ｌ、得られた画像を光学的に検知する方法や、バイア
ス電圧を印加したネザガラスを被測定現像剤で現像し、
１・す−の付着量を光学的に検知する方法が知られてい
る。The method for detecting the developing ability of a developer is to form a latent image of a detection pattern on a photoreceptor 1, and develop it with the developer to be measured (
6L, a method of optically detecting the obtained image, developing a nether glass to which a bias voltage is applied with a developer to be measured,
1. A method of optically detecting the amount of adhesion is known.
その他現像能力を左右ずろ現像剤中のトナー濃度を検知
１゛ろものとしては、キャリヤー」二にあるトナー阻の
変化が現像剤の光学的反射率に比例することを利用した
ものや、コイル中を現像剤を通過せしめた場合のトナー
とキャリヤーの比率によるインダクタンスの変化を利用
したものや、現像剤の抵抗がトナーどキャリヤーの比率
により変化することを利用したもの等が使用され、又は
提案されている１゜
一１二連の検知バター／を被測定現像剤で現像して得ら
れた現像パターンを光学的に検知する方法では、パター
ンの静電潜像形成のために電源を必要どし、従って構成
が複雑となり、コストが高くつく欠点があり、又電源等
の装置を必要どするため、サービスマンが機外で簡単に
現像剤の現像能力を検知することが出来ず、電子写真装
置のメインテナンスサービスに支障を来していた。Other methods for detecting the toner concentration in the developer by shifting the developing ability from side to side include those that utilize the fact that changes in the toner density in the carrier are proportional to the optical reflectance of the developer, and those in the coil. Some methods have been used or proposed, such as those that utilize the change in inductance due to the ratio of toner and carrier when the developer is passed through the developer, and those that utilize the fact that the resistance of the developer changes depending on the ratio of toner and carrier. The method of optically detecting the developed pattern obtained by developing two series of detection butter/s with the developer to be measured requires a power source to form an electrostatic latent image of the pattern. Therefore, the configuration is complicated and the cost is high.Also, because it requires equipment such as a power supply, it is difficult for service personnel to easily detect the developing ability of the developer outside the machine. maintenance services were being disrupted.
」二連の問題点を解決した、検知のためのトナー像の形
成に際して電源を必要とせす、装置の構成が簡単で、複
写機外で簡単に行なえる現像剤の現像能力検知方法とし
て、摩擦帯電により１・す−と異極性に帯電する白色又
は淡色の部材（検知部材）に被測定現像剤を接触させ、
トナーを該部利に付着させて汚し、その汚れ程度により
被測定現像剤の現像能力を検知する方法が最近提案され
た。こ〜に云う白色又は淡色の検知部材とは、紙、プラ
スチック、塗装された金属、磁器等のセラミック及びそ
れらの複合材等多種多様のものが考えられ、１表面が白
色又は淡色であって、摩擦によりトナーと異極性に帯電
するものであれば何でもよいが、この目的には各種のプ
ラスチック材料が好適である。Friction is a method for detecting the developing ability of a developer that solves two problems, requires a power supply when forming a toner image for detection, has a simple device configuration, and can be easily performed outside the copying machine. The developer to be measured is brought into contact with a white or light-colored member (detection member) that is charged with a polarity different from 1.
A method has recently been proposed in which the toner is adhered to the area to stain it, and the developing ability of the developer to be measured is detected based on the degree of staining. The white or light-colored detection member referred to here can be a wide variety of materials such as paper, plastic, painted metal, ceramics such as porcelain, and composite materials thereof, and one surface is white or light-colored, Any material may be used as long as it is charged to a polarity different from that of the toner by friction, and various plastic materials are suitable for this purpose.
又、こ〜で云う「接触」については、検知部材−ヒを現
像剤を流すか、あるいは検知部Ｉにより静置された現像
剤層の表層を摺擦する等の方法で動的に接触させること
が好ましい。In addition, regarding the "contact" mentioned here, the detection member-I is brought into dynamic contact by a method such as flowing developer or rubbing the surface layer of the developer layer that is left still by the detection part I. It is preferable.
この検知方法の原理を説明すると、摩擦帯電によりトナ
ーと異極性に帯電した検知部材の表面に現像剤を接触さ
せると、クーロン力や分散力などによりトナーが検知部
制に吸着される。この場合検知部材の材質と現像剤の組
合せにより、第１図に例示するような、現像剤の現像能
力に対応した部材表面」二汚れ部の濃度の関係を示す曲
線が得られる３、（なお図中横軸の現像能力はオリジナ
ル濃度１９を現像したときの画像濃度で示されている。To explain the principle of this detection method, when a developer is brought into contact with the surface of a detection member that has been charged with a polarity different from that of the toner due to frictional charging, the toner is attracted to the detection member due to Coulomb force, dispersion force, or the like. In this case, depending on the combination of the material of the detection member and the developer, a curve showing the relationship between the density of the dirty area on the member surface corresponding to the developing ability of the developer can be obtained, as shown in FIG. The developing ability on the horizontal axis in the figure is shown by the image density when developing an original density of 19.
）そこで、被測定現像剤を検知部材に接触させた場合の
該検知部材の汚れ部の濃度から、実用に供し得る程度に
現像剤の現像能力を検知することが出来るのである。し
たがって、数種の既知の現像能力に対する検知部拐の汚
れ程度の標本を用意しておき、携帯容易な小片状に作製
された検知部材な ”被測定現像剤に接触させて汚
し、その汚れ度を前記標本と比較すれば容易に現像能力
を検知することかできろ。) Therefore, when the developer to be measured is brought into contact with the detection member, the developing ability of the developer can be detected to a practical extent from the density of the soiled portion of the detection member. Therefore, prepare specimens with a level of dirt on the detection part for several types of known developing ability, and use a detection member made in the form of a small piece that is easy to carry. The developing ability can be easily detected by comparing the degree with the sample.
この検出方法は、上述の如く極めて手軽に現像能力を検
出できるが、検知部材の材質によっては一度乃至数度使
用すると汚れが残り繰返し使用した場合同じ感度を得る
ことかできず、耐久性が悪いものがあることが判った。As mentioned above, this detection method can detect the developing ability very easily, but depending on the material of the detection member, it may remain dirty after one or several uses, and it may not be possible to obtain the same sensitivity even if used repeatedly, resulting in poor durability. It turned out that there was something.
本発明は、上述の検知部材による現像剤の現像能力検知
方法の検知部材の材質についての上述の問題点にかんが
み、繰返し使用してもその表面に汚れが残ることなく、
常に一定の感度が得られるような材質の検知部材を用い
ることにより、携帯して複写機外で測定することができ
、寿命永く使用できることは勿論、複写機内に設けて繰
返し測定に使用することも出来る現像剤現像能力検知方
法を提供することを目的とする１、
以下、本発明をその実施例を示す図面にもとすいて詳細
に説明する。In consideration of the above-mentioned problems regarding the material of the detection member of the method for detecting the developing ability of a developer using the detection member, the present invention provides a method for detecting the developing ability of a developer using a detection member, and provides a method for detecting the developing ability of a developer without leaving any dirt on its surface even after repeated use.
By using a detection member made of a material that always provides a constant sensitivity, it can be carried around and used outside the copying machine for long-life use, and it can also be installed inside the copying machine and used for repeated measurements. 1. Hereinafter, the present invention will be described in detail with reference to drawings showing embodiments thereof.
上記の目的は、後に実施例でも説明するように、検知部
材の表面材質をシリコーン樹脂とすることによって達成
される。The above object is achieved by using silicone resin as the surface material of the sensing member, as will be explained later in the Examples.
種々の材料で作った検知部材を用いて前述の方法で被測
定現像剤を接触させて実験した見た所、シリコーン樹脂
以外の材料で作った検知部制は一度使用すると汚れてし
まい耐久性が悪いがシリコーン樹脂製の検知部材は検知
面に汚れが残らないため繰返し使用しても同じ感度が得
られることが判った。Experiments were conducted using detection members made of various materials and brought into contact with the developer to be measured using the method described above, and it appears that detection systems made of materials other than silicone resin get dirty and have poor durability after one use. Unfortunately, the detection member made of silicone resin does not leave any dirt on the detection surface, so it has been found that the same sensitivity can be obtained even after repeated use.
本発明に使用できるシリコーン樹脂は、常温硬化型、加
熱硬化型のいずれでもよく、又純シリコーン樹脂のみな
らず、アクリル、エポキシ、アルキッド等により変成さ
れたものも使用できる。これらのシリコーン樹脂は市販
品として容易に人手出来るものであって、信越化学制Ｋ
Ｒ２５１、ＫＲ２７２や、トーレシリコーン製５Ｒ２４
１０，５Ｒ２４０６，５Ｒ２４１１等が使用できる。The silicone resin that can be used in the present invention may be either a room temperature curing type or a heat curing type, and not only pure silicone resins but also those modified with acrylic, epoxy, alkyd, etc. can be used. These silicone resins are commercially available products that can be easily made by hand, and are manufactured by Shin-Etsu Chemical Co., Ltd.
R251, KR272, and Toray Silicone 5R24
10,5R2406, 5R2411, etc. can be used.
０実施例 現像能力検知部材を以下に述る方法で調製した。0 example A developing ability detection member was prepared by the method described below.
第２図に示す如く長さ５０ｍｍ、幅２０ｍｍ、厚さ２朋
のステンレス板上に酸化チタンを樹脂の固型分に対して
４０％分散させたシリコーンワニス（信越化学製ＫＲ２
５１）を塗イｆｉ Ｌ白色の検知部材１を作った。As shown in Figure 2, a silicone varnish (KR2 manufactured by Shin-Etsu Chemical Co., Ltd. made by Shin-Etsu Chemical Co., Ltd.) containing titanium oxide dispersed at 40% of the solid content of the resin was applied onto a stainless steel plate measuring 50 mm in length, 20 mm in width, and 2 mm in thickness.
51) to make a white detection member 1.
この検知部材を現像能力の判っている現像剤に２往復接
触させたところ第６図に示す如き現像能力ど検知部材」
二汚れ部濃度の関係か得られ、現像能力か測定できるこ
とが確認された３、検知部材と現像剤の接触を繰返し行
なったか、第３図に示す関係は変化しなかった。。When this detecting member was brought into contact with a developer whose developing ability was known twice, the developing ability was detected as shown in Figure 6.
2. It was confirmed that the relationship between the density of the soiled area was obtained and the developing ability could be measured. 3. The relationship shown in FIG. 3 did not change, whether the contact between the detection member and the developer was repeated. .
０比較例
上記の実施例の樹脂に変えて酢酸ビニルポリマーを使用
した他は上記と全く同様な実験を行なった。現像剤の接
触を繰返し行ったところ１０凹程度から検知部材が汚れ
、感度が低下した。0 Comparative Example An experiment was conducted in exactly the same manner as above, except that vinyl acetate polymer was used instead of the resin in the above example. When contact with the developer was repeated, the detection member became dirty after about 10 indentations, and the sensitivity decreased.
第１図は現像剤の現像能力とこれと接触させた検知部材
の汚れ濃度との関係の一例を示す曲線図、第２図は本発
明の実施例に使用した検知部材の寸法を示す斜視図、第
６図は第２図に示す寸法のステンレス部材にシリコン樹
脂を塗布して作成した検知部材により得られた現像剤現
像能力と部材の汚れ濃度との関係を示す曲線図で・ある
。
１・・・検知部材
酩〉旧贋７（品畷郵
品＝Ｈ町場品聴郵FIG. 1 is a curve diagram showing an example of the relationship between the developing ability of a developer and the stain density of a detection member that is in contact with the developer, and FIG. 2 is a perspective view showing the dimensions of a detection member used in an example of the present invention. , FIG. 6 is a curve diagram showing the relationship between the developer developing ability and the contamination density of the member obtained by a detection member made by applying silicone resin to a stainless steel member having the dimensions shown in FIG. 2. 1... Detection member drunk〉Old counterfeit 7 (Shinawake Post = H Machiba Shincho Post
Claims (1)
の検知部材に、被測定現像剤を接触させて汚ｌ〜、その
汚れ程度により現像能力を検知するトナー及びキャリヤ
ーから成る乾式２成分系電子写真現像剤の現像能力検知
方法において、上記検知部材の表面の拐質がシリコーン
樹脂であることを特徴どする現像能力検知方法。Dry two-component electrophotography consisting of toner and carrier in which the developer to be measured is brought into contact with a white or light-colored detection member that is charged with a polarity different from that of the toner due to frictional electrification, and the developing ability is detected based on the degree of contamination. A developing ability detecting method of a developer, characterized in that the particles on the surface of the detecting member are silicone resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57076568A JPS58194042A (en) | 1982-05-10 | 1982-05-10 | Method for detecting electrophotographic developing ability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57076568A JPS58194042A (en) | 1982-05-10 | 1982-05-10 | Method for detecting electrophotographic developing ability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58194042A true JPS58194042A (en) | 1983-11-11 |
Family
ID=13608830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57076568A Pending JPS58194042A (en) | 1982-05-10 | 1982-05-10 | Method for detecting electrophotographic developing ability |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58194042A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5094555A (en) * | 1985-03-15 | 1992-03-10 | Hitachi, Ltd. | Thermal printer and invertible ribbon cassette therefor including a variable ribbon braking and ribbon detection means |
| US5135319A (en) * | 1987-01-28 | 1992-08-04 | Hitachi, Ltd. | Ink ribbon cassette for use in a thermal transfer printer and having tension means and symmetrically located guide rollers |
-
1982
- 1982-05-10 JP JP57076568A patent/JPS58194042A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5094555A (en) * | 1985-03-15 | 1992-03-10 | Hitachi, Ltd. | Thermal printer and invertible ribbon cassette therefor including a variable ribbon braking and ribbon detection means |
| US5135319A (en) * | 1987-01-28 | 1992-08-04 | Hitachi, Ltd. | Ink ribbon cassette for use in a thermal transfer printer and having tension means and symmetrically located guide rollers |
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