JPS61110163A - Developing method of electrostatic latent image - Google Patents
Developing method of electrostatic latent imageInfo
- Publication number
- JPS61110163A JPS61110163A JP59232642A JP23264284A JPS61110163A JP S61110163 A JPS61110163 A JP S61110163A JP 59232642 A JP59232642 A JP 59232642A JP 23264284 A JP23264284 A JP 23264284A JP S61110163 A JPS61110163 A JP S61110163A
- Authority
- JP
- Japan
- Prior art keywords
- toner
- image
- electrostatic latent
- latent image
- charged
- 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.)
- Granted
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
- G03G15/095—Removing excess solid developer, e.g. fog preventing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Dry Development In Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、電子写真感光体あるいは静電記鎌体などの電
荷保持体に形成された静電潜像を粉体トナーで可視化す
る現像方法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a developing method for visualizing an electrostatic latent image formed on a charge carrier such as an electrophotographic photoreceptor or an electrostatic recorder using powder toner.
従来の技術
従来、静電潜像を粉体トナー（以下、トナーという）で
可視化する代表的な現像方法として、磁気ブラシ現像方
法及びトナーを電界で飛翔させるジャンピング現像方法
が知られていた。BACKGROUND ART Conventionally, as typical developing methods for visualizing an electrostatic latent image using powder toner (hereinafter referred to as toner), a magnetic brush developing method and a jumping developing method in which toner is caused to fly by an electric field have been known.
磁気ブラシ現像方法は、例えば鉄粉キャリヤとトナーの
混合物から成る現像剤を磁石で穂立ちさせて磁気ブラシ
を形成し、そのブラシの穂先で電荷保持体を摺擦して静
電潜像にトナーを静電付着させる方法である（例えば、
Ｕ、Ｓ、Ｐ２，７８６，４３９）。In the magnetic brush development method, for example, a developer consisting of a mixture of an iron powder carrier and toner is made to stand up with a magnet to form a magnetic brush, and the tip of the brush is rubbed against a charge carrier to transfer toner to an electrostatic latent image. This is a method of electrostatically attaching (for example,
U, S, P2,786,439).
また、ジャンピング現像方法は、静電潜像を担持した電
荷保持体とトナー担持体を間隙をもって対向させ、かつ
トナー担持体上の絶縁性トナーをコロナ帯電器で帯電し
た後、電荷保持体とトナー担持体との間に交番電界を印
加してトナーを電界で飛翔させ、静電潜像にトナーを静
電付着させる方法である（例えば、特公昭５８−３２，
３７５号公報）。In addition, in the jumping development method, a charge carrier carrying an electrostatic latent image and a toner carrier are opposed to each other with a gap, and after the insulating toner on the toner carrier is charged with a corona charger, the charge carrier and the toner are charged. This is a method in which an alternating electric field is applied between the carrier and the toner to be caused to fly by the electric field, and the toner is electrostatically attached to the electrostatic latent image.
Publication No. 375).
発明が解決しようとする問題点
磁気ブラシ現像方法は、電荷保持体に対する現像剤の摺
擦力に比べてトナーの静電付着力の方が弱い静電潜像は
現像されない。従って、・・イライト及び細線などトナ
ーの静電付着力が弱い画像は現像され難い為、一般にガ
ンマが高く階調及び細線の再現が貧弱な画像になる問題
点があった。Problems to be Solved by the Invention In the magnetic brush developing method, an electrostatic latent image is not developed because the electrostatic adhesion force of the toner is weaker than the sliding force of the developer against the charge carrier. Therefore, images with weak electrostatic adhesion of toner, such as illite and fine lines, are difficult to develop, and there is a problem in that images generally have a high gamma and poor reproduction of gradations and fine lines.
一方、ジャンピング現像方法は、電界で飛翔させたトナ
ーで現像する為磁気ブラシ現像より階調再現性の良い画
像が得られる特長がある。しかし、この現像方法は用い
るトナーに逆極性のトナーが含まれていると、トナー担
持体と電荷保持体との間に交番電界を印加したとき、逆
極性のトナーも飛翔して非画線部に静電付着する為、逆
極性のトナーの含有量に比例して地かぶりが多くなる問
題点があった。勿論、逆極性のトナーが全く含まれてい
ない理想的なトナーを用いれば、上記の問題点は解決さ
れるが、通常のトナーは、（１）電荷量分布をもってい
る（２）摩擦される相手及び摩擦力などによって極性あ
るいは帯電量が変化するなどの理由で、５〜２０重量パ
ーセントの逆極性のトナーが含まれているのが普通であ
る。従って、従来のようにトナー担持上のトナ一層をコ
ロナ帯電器で強制帯電しても、コロナシャワーが振り掛
かるトナ一層の表層部だけが帯電され、層内のトナーは
全く帯電に与からない為、地かぶりをなくすことはでき
なかった。勿論、トナー担持体に付与するトナ一層を１
層にすれば前述の問題点は解決できるかもしれないが、
粒径１０μｍ前後のトナー担持体に１層にかつ密に付与
するには、高精度かつ複雑なトナー１層化装置が必要に
なり、現像装置がコスト高になる問題点があった。On the other hand, the jumping development method has the advantage that an image with better gradation reproducibility can be obtained than magnetic brush development because it develops with toner that is flown by an electric field. However, in this developing method, if the toner used contains toner of opposite polarity, when an alternating electric field is applied between the toner carrier and the charge carrier, the toner of opposite polarity will also fly away, causing the non-image area to There is a problem in that background fog increases in proportion to the content of toner of opposite polarity because the toner is electrostatically attached to the toner. Of course, the above problems can be solved by using an ideal toner that does not contain toner of opposite polarity at all, but normal toner (1) has a charge distribution (2) is difficult to rub against Because the polarity or the amount of charge changes due to frictional force or the like, 5 to 20 weight percent of toner of opposite polarity is normally included. Therefore, even if a single layer of toner on a toner carrier is forcibly charged with a corona charger as in the past, only the surface layer of the toner layer that is exposed to the corona shower is charged, and the toner within the layer does not contribute to charging at all. , it was not possible to eliminate the ground cover. Of course, one layer of toner applied to the toner carrier is
The above problem may be solved by layering it, but
In order to densely apply the toner in a single layer to a toner carrier having a particle size of about 10 μm, a highly accurate and complicated toner single-layering device is required, which poses the problem of increasing the cost of the developing device.
従って本発明の目的は、係る従来の問題点を克服した新
規な現像方法を提供することである。即ち本発明の第１
の目的は、逆極性トナーを含む通常のトナーを用いても
、地かぶりのないしかも階調及び細線の再現に優れた鮮
明なトナー像が得られる現像方法を提供することである
。さらに本発明の他の目的は、電荷保持体上に色の異な
る２種以上のトナーで合成されたカラートナー像を得る
のに適した現像方法を提供することである。Therefore, an object of the present invention is to provide a new developing method that overcomes the problems of the conventional methods. That is, the first aspect of the present invention
An object of the present invention is to provide a developing method that can produce clear toner images with no background fog and excellent reproduction of gradations and fine lines even when using ordinary toners including toners of opposite polarity. Still another object of the present invention is to provide a developing method suitable for obtaining a color toner image composed of two or more toners of different colors on a charge carrier.
問題点を解決するだめの手段
本発明は、上記問題点を解決するために、電荷保持体上
の静電潜像にトナーを付与した後、前記トナーを担持し
た電荷保持体を一様に帯電してトナーの極性を揃えてか
ら、前記電荷保持体に対向して設けた電極と前記電荷保
持体との間に電界を作用させること罠よって、非画線部
に付着した不要なトナーを除去して、地かぶりのない鮮
明なトナー像を得るようにしたものである。Means for Solving the Problems In order to solve the above problems, the present invention applies toner to an electrostatic latent image on a charge carrier, and then uniformly charges the charge carrier carrying the toner. After aligning the polarity of the toner, an electric field is applied between the charge holding body and an electrode provided opposite to the charge holding body, thereby removing unnecessary toner adhering to the non-image area. In this way, a clear toner image without background fog can be obtained.
作 用
本発明は上記した構成にすることによって、非画線部に
静電付着した逆極性のトナーを正規の極性に再帯電して
、電荷保持体のトナーを同一極性に揃えた後、トナーに
電界を作用させて現像する為、地かぶりのない鮮明なト
ナー像が得られる。Effect of the present invention By having the above-described structure, the toner of opposite polarity electrostatically adhered to the non-image area is recharged to the normal polarity, and after the toner on the charge holding body is aligned to the same polarity, the toner is removed. Since development is performed by applying an electric field to the toner, a clear toner image with no background fog can be obtained.
本発明に用い得る電荷保持体としては、セレン。As a charge carrier that can be used in the present invention, selenium is used.
硫化カドミウム、酸化亜鉛及びアモルファスシリコンな
ど通常の電子写真感光体、あるいは導電性基体にプラス
チックなどの絶縁性物質を担持させた静電記録体など静
電荷を保持し得るものであればいずれでも適用できる。Any material that can hold an electrostatic charge can be applied, such as ordinary electrophotographic photoreceptors such as cadmium sulfide, zinc oxide, and amorphous silicon, or electrostatic recording materials in which an insulating material such as plastic is supported on a conductive substrate. .
またトナーとしては、非磁性及び磁性の１成分トナーあ
るいは２成分用のトナーなど通常電子写真あるいは静電
記録に用いられるトナーであればいずれでも適用できる
。中でも好ましいトナーとしては、非磁性、磁性にかか
わりなく比抵抗が１０１２０・ｍ以上のものが良い。ま
た電界で飛翔させるのに適したトナーとしては、電荷量
が２０μＣ／ｇ以下、好ましくは２〜１５μＣ／ｇ
が良い。Further, as the toner, any toner that is normally used in electrophotography or electrostatic recording, such as non-magnetic and magnetic one-component toner or two-component toner, can be used. Among these, preferred toners are ones with a specific resistance of 10120 m or more, regardless of whether they are non-magnetic or magnetic. In addition, toner suitable for flying with an electric field has a charge amount of 20 μC/g or less, preferably 2 to 15 μC/g.
is good.
実施例
以下、本発明の一実施例について図面を参照して説明す
る。EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings.
第１図は、本発明による現像方法の要部を示す模式図で
ある。ここでは電荷保持体にセレン感光体と、またトナ
ーには比抵抗が１ｏ 〜１０ Ω・口の負帯電用の絶縁
性トナーを用いてポジーポジ現像する場合について説明
する。セレン感光体１の構成は、アルミニウムの導電性
基体２にセレン３を蒸着したものである。FIG. 1 is a schematic diagram showing the main parts of the developing method according to the present invention. Here, a case will be described in which positive-positive development is performed using a selenium photoreceptor as a charge holding member and an insulating toner for negative charging with a specific resistance of 10 to 10 Ω. The selenium photoreceptor 1 has a structure in which selenium 3 is vapor-deposited on a conductive substrate 2 made of aluminum.
まず、セレン感光体（以下、感光体という）を＋ ６
ＫＶ印加したコロナ帯電器で、＋５００〜＋１Ｑ００ｖ
に正帯電した後、像露光してポジの静電潜像を形成する
。次に、鉄粉キャリヤと前記トナーを混合した現像剤を
感光体に散布した後、磁石で現像剤を収り除く。すると
第１図（ａ）に示すように、静電像を有する画線部には
負帯電トナー４が、また非画線部には正に帯電した逆極
性トナー５及び未帯電のトナー６が付着した状態が得ら
れる。この時、非画線部に付着するトナーは概ね１層に
なる。というのは、通常現像剤中のトナーは、１つ１つ
が全て同極性に帯電しているのではなく、５〜２０重量
パーセントの逆極性あるいは未帯電トナーが含まれてお
り、そのようなトナーはかぶりとして非画線部に付着す
る程度で、何層にも静電付着する能力がないからである
。First, add a selenium photoreceptor (hereinafter referred to as photoreceptor) to +6
+500 to +1Q00v with a corona charger applying KV
After being positively charged, image exposure is performed to form a positive electrostatic latent image. Next, a developer mixed with an iron powder carrier and the toner is sprinkled onto the photoreceptor, and then the developer is collected and removed by a magnet. Then, as shown in FIG. 1(a), negatively charged toner 4 is placed in the image area having the electrostatic image, and positively charged reverse polarity toner 5 and uncharged toner 6 are placed in the non-image area. A state of adhesion is obtained. At this time, approximately one layer of toner adheres to the non-image area. This is because the toners in a developer are not all charged to the same polarity, but instead contain 5 to 20 weight percent of opposite polarity or uncharged toner. This is because it only adheres to non-image areas as a fog and does not have the ability to electrostatically adhere to multiple layers.
次に第１図（ｂｌに示すように、−２〜−３ＫＶ印加し
たコロナ帯電器７で感光体１を一様に負に帯電する。す
ると、感光体は帯電されず（セレンはＰ型半導体である
ため）トナー５及びトナー６がそれぞれ負に帯電されて
ぎ及び６′になる。Next, as shown in FIG. 1 (bl), the photoreceptor 1 is uniformly negatively charged with a corona charger 7 applying -2 to -3 KV.Then, the photoreceptor is not charged (selenium is a P-type semiconductor. Therefore, toner 5 and toner 6 are negatively charged and become gi and 6', respectively.
次に第１図（Ｃ１に示すように、アルミニウム板などの
電極８を感光体１に０．１〜０．５ｍの間隙をあけて対
向させ、電極８と導電性基体２との間に電圧＋２００〜
２０００Ｖ、周波数１００市〜２０晶の交流を印加する
。するとトナー５．５’、６及び６′は、電極間を往復
運動しながら画線部の方向に集束されていき、非画線部
にあったトナー５′及び６′は除去され、感光体上にか
ぶりのないトナー像が得られる。Next, as shown in FIG. 1 (C1), an electrode 8 such as an aluminum plate is placed facing the photoreceptor 1 with a gap of 0.1 to 0.5 m, and a voltage is applied between the electrode 8 and the conductive substrate 2. +200～
Apply an alternating current of 2000 V and a frequency of 100 to 20 crystals. Then, the toners 5.5', 6, and 6' move back and forth between the electrodes and are focused in the direction of the image area, and the toners 5' and 6' that were in the non-image area are removed and A toner image with no fog can be obtained.
次に、本発明による他の実施例について第２図を参照し
て説明する。第２図は、色の異なる２種類のトナーで合
成されたカラートナー像を電荷保持体上に得る現像方法
を示す。ここでは電荷保持体に通常のフタロシアニン感
光体を用い、トナーには比抵抗がそれぞれ１０１４〜１
ｏ１６Ω・αの負帯電用のイエロー及びマゼンタのトナ
ーを用いた場合について説明する。フタロシアニン感光
体９の構成は、図に示すようにアルミニウムなどの導電
性基体１０にフタロシアニン感光層１１を設けたもので
ある。Next, another embodiment according to the present invention will be described with reference to FIG. FIG. 2 shows a developing method for obtaining a color toner image on a charge carrier, which is composed of two types of toners of different colors. Here, a normal phthalocyanine photoreceptor is used as the charge carrier, and the toner has a specific resistance of 1014 to 1.
A case will be described in which yellow and magenta toners for negative charging of o16Ω·α are used. As shown in the figure, the phthalocyanine photoreceptor 9 has a structure in which a phthalocyanine photosensitive layer 11 is provided on a conductive substrate 10 such as aluminum.
まず、フタロンアニン感光体（以下、感光体という）を
−５〜−ｅＫＶ印加したコロナ帯電器で一３ｏＯ〜−５
００Ｖに負帯電した後、第１のネガ像を露光してネガの
静電潜像を形成する。次に、鉄粉キャリヤとイエロート
ナーを混合した現像剤を用いて、磁気ブラシ現像方法に
よりアルミニウムの電極板１２にトナーを静電付着した
ものを、第２図（ａ）に示すように感光体９に０．１〜
０．１５＋ｏ＋の間隙をあけて対向し、電極板１２と導
電性基体１ｏを接地する。電極板１２上のトナーのうち
、負に帯電したトナー１３は露光で光減衰された画線部
に、また一方正に帯電した逆極性のトナー１４は非画線
部にそれぞれ静電引力によって引きつけられ感光体９に
付着する。ここで、を極板１２と導電性基体１０とを接
地して同電位としたが、必要に応じて電流電界を印加し
ても良い。まだ非画線部に付着したトナー１４は、第１
図で説明した理由により、概ね１層状態になっている。First, a phthalonanine photoreceptor (hereinafter referred to as photoreceptor) was charged with a corona charger to which -5 to -eKV was applied.
After being negatively charged to 00V, the first negative image is exposed to form a negative electrostatic latent image. Next, toner is electrostatically adhered to an aluminum electrode plate 12 using a magnetic brush development method using a developer containing a mixture of an iron powder carrier and a yellow toner, and then a photoreceptor is attached as shown in FIG. 2(a). 0.1 to 9
The electrode plate 12 and the conductive substrate 1o are grounded, facing each other with a gap of 0.15+o+. Among the toners on the electrode plate 12, the negatively charged toner 13 is attracted to the image area where light is attenuated by exposure, and the positively charged toner 14 of opposite polarity is attracted to the non-image area by electrostatic attraction. and adheres to the photoreceptor 9. Here, the electrode plate 12 and the conductive substrate 10 are grounded to have the same potential, but a current electric field may be applied as necessary. The toner 14 still attached to the non-image area is
For the reason explained in the figure, it is generally in a single layer state.
次に、第２図（ｂ） Ｋ示すようにコロナｖＡ１６に−
ｅＫＶ 、 ’；ｔ”リノｔ’１６に一３ｏｏ−−６０
０Ｖス
印加したコロトロ／帯電器１了で感光体９を一様Δ
に負に帯電する。すると、正に帯電していたトナー１４
は、負に再帯電されて１４′になる。Next, as shown in Fig. 2(b) K, the corona vA16 is
eKV, ';t'' Reno t'16 to 3oo--60
The photoreceptor 9 is uniformly negatively charged to Δ by applying 0V to the charger. Then, the positively charged toner 14
is negatively recharged to 14'.
次に、第２図（Ｃ）に示すようにアルミニウム板などの
電極１８を感光体９に０．１〜０．２ ｒａｎ の間隙
をあけて対向させ、電極１８に＋１００〜＋５００Ｖの
直流電界を印加すると、非画線部のトナー１４′は電極
１已に引きつけられ、地かぶりが除去される。ここで、
直流電界の代わりに第１図（ｃ）で説明したのと同様に
、電極１８と導電性基体１Ｑの間に交流電界を印加して
も良いことは勿論である。Next, as shown in FIG. 2(C), an electrode 18 such as an aluminum plate is placed opposite to the photoreceptor 9 with a gap of 0.1 to 0.2 ran, and a DC electric field of +100 to +500 V is applied to the electrode 18. When this voltage is applied, the toner 14' in the non-image area is attracted to one side of the electrode, and the background fog is removed. here,
It goes without saying that instead of the DC electric field, an AC electric field may be applied between the electrode 18 and the conductive substrate 1Q in the same way as explained with reference to FIG. 1(c).
次に、第２図（ｄｌに示すように、第２のネガ像を露光
する。Next, a second negative image is exposed, as shown in FIG. 2(dl).
次に、鉄、粉キャリヤとマゼンタトナーを混合した現像
剤を用いて磁気ブラシ現像方法によりアルミニウムのｔ
極板１９にマゼンタトナーを静電付着させたものを、第
２図（８１に示すように感光体９に０．１〜０．１５ｍ
の間隙をあけて対向させ、電極１９と導電性基体１０
と接地する。すると、電極１９上のトナーのうち負に帯
電しているトナー２０は、露光で光減衰された画、椋部
に静電付着する。と同時に、正に帯電しているトナー２
１は、非画線部に静電付着する。Next, the aluminum was developed using a magnetic brush development method using a developer containing a mixture of iron, powder carrier and magenta toner.
As shown in FIG.
The electrode 19 and the conductive substrate 10 are placed facing each other with a gap between them.
and ground. Then, among the toners on the electrode 19, the negatively charged toner 20 electrostatically adheres to the image and the area where the light has been attenuated by exposure. At the same time, positively charged toner 2
1 electrostatically adheres to the non-image area.
次に、第２図（ｂ）と同様の方法で、正に帯電している
トナー２１′を負に再帯電した後（第２図（ｆ））、第
２図ｊｃ）と同様の方法で非画線部に付着していたトナ
ー２１′を除去することによって、感光体９上にイエロ
ーとマゼンタとのトナーで合成されたカラー像が得られ
る（第２図（９））。Next, the positively charged toner 21' is recharged negatively in the same manner as in FIG. 2(b) (FIG. 2(f)), and then in the same manner as in FIG. 2j). By removing the toner 21' adhering to the non-image area, a color image composed of yellow and magenta toners is obtained on the photoreceptor 9 (FIG. 2 (9)).
なお、イエローとマゼンタのトナーを重ね合わせた像を
得るには、感光体上の表面電位と、電極と導電性基体と
の間に印加する電界強度を調整することによって容易に
得ることができる。Note that an image in which yellow and magenta toners are superimposed can be easily obtained by adjusting the surface potential on the photoreceptor and the electric field strength applied between the electrode and the conductive substrate.
発明の詳細
な説明した通り本発明によれば、電荷保持体にトナーを
付与した際、非画線部に付着した逆極性のトナーを正規
の極性に再帯電し、電荷保持体ぶりのないトナー像が得
られる効果がある。また電荷保持体にトナーを付与した
際、静電潜像が作る電界の作用によって正規の極性のト
ナーと逆極性のトナーが分離され、しかも非画線部に付
着した逆極性のトナーはほぼ１層状態になる。このよう
に、地かぶりの原因になる逆極性のトナーを１層状態に
した後、コロナ帯電する為確実に正規の極性に再帯電で
きる効果がある。さらに、本発明は現像剤などでトナー
像を摺擦する工程が全くなく、トナーの電界飛翔で現像
するため静電潜像に対応した階調及び細線の再現に優れ
たトナー像が得られる効果がある。また、本発明は現像
剤などでトナー像を摺擦する工程がなく、シかも地かぶ
りなく現像できる為、電荷保持体上に２種以上のトナー
で合成されたカラーのトナー像が色かぶりなく得られる
効果がある。さらに、２種以上のトナーで合成されたカ
ラートナー像が同一の電荷保持体上に得られる為、１回
の転写工程でカラープリントが得られアクセスタムが短
縮できる効果がある０As described in detail, according to the present invention, when toner is applied to a charge carrier, toner of opposite polarity adhering to a non-printing area is recharged to the normal polarity, and a toner without the charge carrier appearance is produced. It has the effect of producing an image. Furthermore, when toner is applied to the charge carrier, toner of normal polarity and toner of opposite polarity are separated by the action of the electric field created by the electrostatic latent image, and moreover, the toner of opposite polarity attached to the non-image area is approximately 1 Becomes a layered state. In this way, after the toner of opposite polarity, which causes background fogging, is made into a single layer state, it is corona charged, which has the effect of reliably recharging it to the normal polarity. Furthermore, since the present invention does not require any step of rubbing the toner image with a developer or the like, and develops the toner by electric field flight, it is possible to obtain a toner image that is excellent in reproducing gradations and fine lines corresponding to electrostatic latent images. There is. In addition, the present invention does not require the step of rubbing the toner image with a developer or the like, and can be developed without any background fog, so the color toner image composed of two or more types of toner on the charge carrier does not have any color fog. There are benefits to be gained. Furthermore, since a color toner image composed of two or more types of toner can be obtained on the same charge carrier, a color print can be obtained in one transfer process, which has the effect of shortening the access tom.
第１図は本発明による静電潜像の現像方法の一実施例の
・工程を示す模式図、第２図は本発明による現像方法の
他の実施例の工程を示す模式図である。
１・・・・・セレン感光体、４・・・・・・負帯電トナ
ー、６・・・・・・逆極性トナー、７・・・・・・コロ
ナ帯電器、８・・・・・・電極、９・・・・・・フタロ
シアニン感光体、１２・・・・・・電極、１３・・・・
・・イエローの負帯電トナー、１４・・・・・・イエロ
ーの逆極性トナー、１７・・・・・・スコロトロン帯電
器、１８・・・・・・電極、１９・・・・・・電極、２
０・・・・・・マゼンタの負帯電トナー、２１・・・・
・・マゼンタの逆極性トナー。
［１図
Ｇ ′″′ｃ３
υ、ノ
−ノｌ−１−口へFIG. 1 is a schematic diagram showing the steps of one embodiment of the electrostatic latent image developing method according to the present invention, and FIG. 2 is a schematic diagram showing the steps of another embodiment of the developing method according to the present invention. 1...Selenium photoconductor, 4...Negatively charged toner, 6...Reverse polarity toner, 7...Corona charger, 8... Electrode, 9... Phthalocyanine photoreceptor, 12... Electrode, 13...
... Yellow negatively charged toner, 14 ... Yellow reverse polarity toner, 17 ... Scorotron charger, 18 ... Electrode, 19 ... Electrode, 2
0... Magenta negatively charged toner, 21...
...Magenta reverse polarity toner. [Figure 1 G ′″′c3
υ、ノ
-Nol-1-To the mouth
Claims (5)
るトナー付与工程、前記電荷保持体上のトナーを一様に
帯電するトナー帯電工程、次に前記電荷保持体に対向し
て設けた電極と前記電荷保持体との間に電界を作用させ
て不要なトナーを除去するトナー除去工程を含むことを
特徴とする静電潜像の現像方法。(1) A toner application step of applying toner to a charge carrier carrying an electrostatic latent image; a toner charging step of uniformly charging the toner on the charge carrier; A method for developing an electrostatic latent image, comprising a toner removing step of applying an electric field between the charged electrode and the charge holding body to remove unnecessary toner.
である特許請求の範囲第１項記載の静電潜像の現像方法
。(2) The method for developing an electrostatic latent image according to claim 1, wherein the toner has a specific resistance of 10^1^2 Ω·cm or more.
翔させて電荷保持体に付与する特許請求の範囲第１項又
は第２項記載の静電潜像の現像方法。(3) The method for developing an electrostatic latent image according to claim 1 or 2, wherein in the toner applying step, the toner is applied to the charge carrier by flying the toner using an electric field.
との間隙が０．５ｍｍ以下である特許請求の範囲第１項
、第２項又は第３項記載の静電潜像の現像方法。(4) The method for developing an electrostatic latent image according to claim 1, 2 or 3, wherein in the toner removing step, the gap between the charge carrier and the electrode is 0.5 mm or less.
が交番電界である特許請求の範囲第４項記載の静電潜像
の現像方法。(5) The method for developing an electrostatic latent image according to claim 4, wherein the electric field applied between the charge carrier and the electrode is an alternating electric field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59232642A JPH061400B2 (en) | 1984-11-05 | 1984-11-05 | Method of developing electrostatic latent image |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59232642A JPH061400B2 (en) | 1984-11-05 | 1984-11-05 | Method of developing electrostatic latent image |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61110163A true JPS61110163A (en) | 1986-05-28 |
| JPH061400B2 JPH061400B2 (en) | 1994-01-05 |
Family
ID=16942493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59232642A Expired - Lifetime JPH061400B2 (en) | 1984-11-05 | 1984-11-05 | Method of developing electrostatic latent image |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH061400B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5919954A (en) * | 1982-07-27 | 1984-02-01 | Kinoshita Kenkyusho:Kk | Developing method |
-
1984
- 1984-11-05 JP JP59232642A patent/JPH061400B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5919954A (en) * | 1982-07-27 | 1984-02-01 | Kinoshita Kenkyusho:Kk | Developing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH061400B2 (en) | 1994-01-05 |
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