JPS59181375A - Developing device - Google Patents

Developing device

Info

Publication number
JPS59181375A
JPS59181375A JP58056049A JP5604983A JPS59181375A JP S59181375 A JPS59181375 A JP S59181375A JP 58056049 A JP58056049 A JP 58056049A JP 5604983 A JP5604983 A JP 5604983A JP S59181375 A JPS59181375 A JP S59181375A
Authority
JP
Japan
Prior art keywords
electrode
toner
electrode group
developer
electrodes
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
Application number
JP58056049A
Other languages
Japanese (ja)
Inventor
Takeshi Nozaki
武史 野崎
Masahiro Hosoya
雅弘 細矢
Koji Tanimoto
弘二 谷本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP58056049A priority Critical patent/JPS59181375A/en
Priority to US06/594,532 priority patent/US4558941A/en
Priority to DE19843411946 priority patent/DE3411946A1/en
Publication of JPS59181375A publication Critical patent/JPS59181375A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00Apparatus for electrographic processes using a charge pattern
    • G03G15/06Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer

Abstract

PURPOSE:To prevent the generation of an accumulation of a developer in the vicinity of the center of an electrode by providing an opposed electrode in a different phase position from electrodes in a part of a developer carrying electrode group, and impressing the voltage which is varied with lapse of time to the opposed electrode. CONSTITUTION:A non-magnetic toner 17 of a developer is moved and carried by an electrode group 20 impressed with a voltage varying with lapse of time, of a developer carrying body 19. In an area 19b covering the vicinity of a photosensitive drum 11 of this carrying body 19, an electrode group 21 is provided in a different phase position opposed to the electrode group 20, and when the potential which is varied with lapse of time is impressed to the group 21, an electric field is generated densely in the center part of the electrode group 20, too. As a result, the toner 17 moves in a good state, and the generation of an accumulation of a toner in the vicinity of the center of each electrode of the electrode group 20 is prevented.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明は、たとえば電子複写機などにおいて、感光体ド
ラム上に形成された静電潜像を非接触状態で現像する新
規な現像装置に関する。
DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a novel developing device for developing an electrostatic latent image formed on a photoreceptor drum in a non-contact manner, for example in an electronic copying machine.

〔発明の技術的背景とその問題点〕[Technical background of the invention and its problems]

従来、静電潜像の現像方法としては、磁気ブラシ現像法
、カスケード現像法、ファーブラシ現像法などがよく知
られているが、最近これらとは全く異なる新規な現像法
が検討されている。
Conventionally, as methods for developing electrostatic latent images, magnetic brush development, cascade development, fur brush development, and the like are well known, but recently new development methods that are completely different from these have been studied.

これは、たとえば第五図に示すように、感光体ドラムl
と相対向して表面に線状の電極群2を一定間隔で配設し
たトナー担持体3を設け、その電極群2に時間的に変化
する電位を順次印加して、各電極間に交番電界を発生さ
せることによシ、各電極間で非磁性トナー4を電極の配
設方向に沿って移動させるとともに、電気力線にしたが
って感光体ドラム1に向って上昇せしめることによシ振
動、浮遊、スモーク化させつつ移動させることによって
搬送し、感光体ドラム1上の静電潜像へトナー4を供給
するものである。
For example, as shown in FIG.
A toner carrier 3 having linear electrode groups 2 arranged at regular intervals on its surface is provided facing the toner carrier 3, and a time-varying potential is sequentially applied to the electrode groups 2 to create an alternating electric field between each electrode. By causing the non-magnetic toner 4 to move between each electrode along the direction in which the electrodes are arranged, and by causing it to rise toward the photosensitive drum 1 according to the lines of electric force, vibration and floating are caused. The toner 4 is conveyed by moving the toner while turning it into smoke, and supplies the toner 4 to the electrostatic latent image on the photoreceptor drum 1.

ととるが、この現像法には次のような問題があった。す
なわち、第2図に示すように、感光体ドラム1の静電潜
画像面と対向しない部分では、電極群2に電位を印加し
た場合、電気力線は破線のようになる。っまシ、電極ど
うしの間においては電界が強いが、電極の中心付近では
ほとんど無いに等しい。そのため、電極間においてはト
ナーは強い力を受けて移動するが、電極上ではほとんど
力を受けず、第3図に示すようにトナー4は山伏に積も
ったままとなる。この山状に堆積したトナー4は移動し
ているトナー7局 の運動の妨げになシ、結末トナー搬送は停止してしまう
However, this developing method had the following problems. That is, as shown in FIG. 2, when a potential is applied to the electrode group 2 in a portion of the photoreceptor drum 1 that does not face the electrostatic latent image surface, the lines of electric force become like broken lines. The electric field is strong between the electrodes, but it is almost nonexistent near the center of the electrodes. Therefore, although the toner moves between the electrodes under strong force, it receives almost no force on the electrodes, and the toner 4 remains piled up as shown in FIG. 3. The piled up toner 4 does not interfere with the movement of the seven moving toner stations, and as a result, toner transportation stops.

〔発明の目的〕[Purpose of the invention]

本発明は上記事情に鑑みてなされたもので、その目的と
するところは、電極の中心付近で現像剤が堆積すること
を防止でき、これにょシ現滓剤の移動を妨げるようなこ
とは起きず、現像剤の搬送性がより向上して確実に現像
剤が搬送される現像装置を提供することにある。
The present invention has been made in view of the above circumstances, and its purpose is to prevent the developer from accumulating near the center of the electrode, thereby preventing the developer from interfering with the movement of the developer. First, it is an object of the present invention to provide a developing device in which the developer transportability is further improved and the developer is reliably transported.

〔発明の概要〕[Summary of the invention]

本発明は、被現像面の近傍に設けられ少なくとも一部が
被現像面に相対向しかつ相互に離間して設けられた電極
群に時間的に変化する電位を印加することによシ、電極
間で現像剤を移動させて被現像面へ現像剤を搬送する現
像装置において、上記電極群に対向しかっこの電極群と
は異なる位相をもって配置された対向電極を設け、この
対向電極に時間的に変化する電位を印加することによっ
て、電極の中心部にも電気力線を密に分布させるととも
に、現像剤に上方への移動力を与えるようにしたもので
ある。
The present invention is capable of generating electrodes by applying a potential that changes over time to a group of electrodes that are provided near a surface to be developed, at least a portion of which faces the surface to be developed, and is spaced apart from each other. In a developing device that transports the developer to the surface to be developed by moving the developer between the electrodes, a counter electrode is provided which is arranged with a phase different from that of the electrode group in parentheses facing the electrode group, and the counter electrode is By applying a changing potential, electric lines of force are distributed densely in the center of the electrode, and an upward moving force is applied to the developer.

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4図において、11はたとえば電子複写機の感光体ド
ラムで、図示矢印a方向に回転する。
In FIG. 4, reference numeral 11 denotes a photosensitive drum of, for example, an electronic copying machine, which rotates in the direction of arrow a in the figure.

上記感光体ドラム11は、アルミニウム製ドラム12の
表面に静電像保持体としてのセレン・テルル系感光層1
3が形成されてなり、その感光層13にたとえば負に帯
電された静電潜像14が形成されている。なお、上記ド
ラム12は接地されている。しかして、感光体I−″ラ
ム11と相対向して本発明による現像装置15が設けら
れており、次のように構成される。すなわち、16はト
ナー容器で、現像剤としての非磁性トナー17が収納さ
れる。このトナー容器16は、その上面の感光体ドラム
11と相対向する部位に開口部18が形成されていると
ともに、その底面が図面上において右端部から左端部に
向って下降する傾斜面に形成されている。上記トナー容
器16内には、板状のトナー担持体19が設けられてい
る。このトナー担持体19は、水平部19aと略中央部
から下方に折シ曲シ左端部に向って下降する傾斜部19
bとを有している。上記水平部19aは、トナー容器1
6の開口部1gを介して感光体ドラム11の表面と相対
向しており、その感光体ドラム11表面との距離は約2
.0 mmに保たれている。また、上記傾斜部19bの
端部はトナー17中に浸漬されている。しかして、上記
トナー担持体19の表面には、感光体ドラム1ノの軸方
向と平行に等間隔で配列されそれぞれが線状に形成され
た銅製の電極群20が設けられている。この電極群2θ
は、たとえば印刷、エツチングあるいは蒸着などの手段
によってトナー担持体19上に形成されており、その電
極幅は約0,1〜0.5 mrnで、電極間隔は約01
〜0.5調に保たれている。このように構成されたトナ
ー担持体19の感光体ドラム11と相対向しない部分、
っまシ傾斜部19bに設けられた電極群2oと対向して
対向電極群21が設けられている。この対向電極群21
は、上記電極群2oから約0.2〜10腿の距離に、互
いに電極が交互になるように、つまシミ極群20の各電
極間に位置するように配設されている。また、上記対向
電極群21は、電極群20と同様な手段で絶縁板22上
に形成されておシ、その材質、電極幅および電極間隔も
電極群2oと同様である。なお、23はトナー17を攪
拌する攪拌器である。
The photosensitive drum 11 has a selenium/tellurium based photosensitive layer 1 as an electrostatic image holder on the surface of an aluminum drum 12.
3 is formed, and a negatively charged electrostatic latent image 14 is formed on the photosensitive layer 13, for example. Note that the drum 12 is grounded. A developing device 15 according to the present invention is provided opposite to the photoreceptor I-'' ram 11, and is configured as follows. Namely, 16 is a toner container, which contains non-magnetic toner as a developer. 17 is housed in the toner container 16. An opening 18 is formed on the upper surface of the toner container 16 at a portion facing the photoreceptor drum 11, and the bottom surface of the toner container 16 descends from the right end toward the left end in the drawing. A plate-shaped toner carrier 19 is provided inside the toner container 16. This toner carrier 19 is bent downward from a horizontal portion 19a and a substantially central portion. Inclined portion 19 that descends toward the left end
It has b. The horizontal portion 19a includes the toner container 1
It faces the surface of the photoreceptor drum 11 through the opening 1g of the photoreceptor drum 11, and the distance from the surface of the photoreceptor drum 11 is approximately 2
.. It is kept at 0 mm. Further, the end portion of the inclined portion 19b is immersed in the toner 17. On the surface of the toner carrier 19, there are provided electrode groups 20 made of copper and arranged in parallel with the axial direction of the photoreceptor drum 1 at equal intervals and each formed in a linear shape. This electrode group 2θ
are formed on the toner carrier 19 by means such as printing, etching, or vapor deposition, and the electrode width is about 0.1 to 0.5 mrn, and the electrode spacing is about 0.1 mrn.
It is maintained at ~0.5 tone. A portion of the toner carrier 19 configured in this way that does not face the photosensitive drum 11,
A counter electrode group 21 is provided opposite the electrode group 2o provided on the permanently inclined portion 19b. This counter electrode group 21
are arranged at a distance of about 0.2 to 10 thighs from the electrode group 2o so that the electrodes alternate with each other and are located between the electrodes of the tab stain electrode group 20. Further, the counter electrode group 21 is formed on the insulating plate 22 by the same means as the electrode group 20, and its material, electrode width, and electrode spacing are also the same as the electrode group 2o. Note that 23 is a stirrer for stirring the toner 17.

さて、上述したように構成された電極群2θ。Now, the electrode group 2θ configured as described above.

21の各電極は、たとえば第5図に示すように結線され
、グループ化される。すなわち、たとえば8つのグルー
7°nO〜n7に分割してあシ、1つの電極グループに
属する電極はそれぞれ4つおきに結線されている。そし
て、各電極グループnθ〜n7には、第6図ないし第8
図に示す制御回路によって電圧が印加されるもので、以
下その詳細を説明する。
The 21 electrodes are connected and grouped, for example, as shown in FIG. That is, for example, the electrodes are divided into eight groups 7°nO to n7, and the electrodes belonging to one electrode group are connected every fourth. Each electrode group nθ to n7 is provided with a
A voltage is applied by the control circuit shown in the figure, and the details will be explained below.

第6図ないし第8図は、第5図のようにグループ化され
た電極群20.21に対して電圧の印加制御を行う制御
回路を示すものである。まず、第6図は全体的な構成を
概略的に示すもので、電極群への印加電圧の走査速度を
決める基準発振器31.この発振器31から出力される
パルスによってカウント動作し、一連の電圧走査周期を
制御する4進カウンタ32、このカウンタ32の値に応
じて電圧制御コー)FVCoo〜■C3o 〜■C3、
、VC40〜VC41,VC5o〜V Cs1r V 
C6o〜V C61、V C71〜VC71を発生する
電圧制御コード発生回路33、この電圧制御コード発生
回路33からの各電圧制御コこ々 一ドによってその各コードに対応した電圧En。
6 to 8 show control circuits that control the application of voltage to the electrode groups 20 and 21 grouped as shown in FIG. 5. First, FIG. 6 schematically shows the overall configuration, in which a reference oscillator 31 determines the scanning speed of the voltage applied to the electrode group. A quaternary counter 32 counts according to the pulses output from the oscillator 31 and controls a series of voltage scanning cycles; the voltage is controlled according to the value of this counter 32;
, VC40~VC41, VC5o~V Cs1r V
A voltage control code generation circuit 33 that generates C6o to VC61 and VC71 to VC71, and a voltage En corresponding to each code by each voltage control code from this voltage control code generation circuit 33.

En7を発生し、それを電極群20.21に印加する制
御電圧発生回路34によって構成される。
It is constituted by a control voltage generation circuit 34 that generates En7 and applies it to the electrode group 20.21.

第7図は前記電圧制御コート”発生回路33を詳細に示
すもので、前記カウンタ32の出力をデコードするデコ
ーダ35、このデコーダ35の各出力端に縦続接続され
、各電極グループn O−n 7への電圧制御コードを
発生するコード発生回路36o〜367によって構成さ
れる。
FIG. 7 shows the voltage control code generation circuit 33 in detail, including a decoder 35 for decoding the output of the counter 32, connected in cascade to each output terminal of this decoder 35, and each electrode group n O-n 7. It is constituted by code generation circuits 36o to 367 that generate voltage control codes for the voltage control codes.

上記コード発生回路360〜367は、それぞれたとえ
ばダイオードマトリクス回路(ROM)によって構成さ
れていて、あらかじめアドレスに対応する出力コードを
記憶しておシ、カウンタ32で指定されるアドレス変化
とともに出力コート”が変化するようになっている。 
      −5第8図は前記制御電圧発生回路34を
詳細に示すもので、前記電圧制御コード発生回路33か
らの各電圧制御コードに対応した電圧Eno〜En7を
発生し、各電極グルー7’ n O〜n7にそれぞれ印
加する電圧発生回路379〜377によって構成される
。上記電圧発生回路37o〜377は、電圧制御コード
(たとえばVCoo〜VCo1)に対応してオン、オフ
する出力電圧制御用のトランジスタQ。+Qts これ
らトランジスタQ。+Qt を動作させるだめの抵抗R
1〜R4、上記トランジスタQo=Qtのオン、オフ動
作に応じて電源電圧Eを分割するだめの抵抗R5、R,
によって構成される。なお、上記抵抗R5、R6はたと
えば同じ抵抗値に設定される。このような構成において
、たとえば電圧制御コードV C00s ■C01が共
に0”の場合、トランジスタQ。rQlは共にオフ状態
にあシ、このため出力電圧Enoは電源電圧Eと同一で
ある。次に、電圧制御コート”VCooカ”0”、Vc
o□がパ1”となってトランジスタQ1がオンした場合
、出力電圧Enoはg/2となる。次に、電圧制御コー
ドV C6,が’0” r V Cooがパ1”となっ
てトランジスタQoがオンした場合、出力電圧En。
Each of the code generation circuits 360 to 367 is constructed of, for example, a diode matrix circuit (ROM), and stores an output code corresponding to an address in advance. It's about to change.
-5 FIG. 8 shows the control voltage generation circuit 34 in detail, which generates voltages Eno to En7 corresponding to each voltage control code from the voltage control code generation circuit 33, and generates voltages Eno to En7 corresponding to each voltage control code from the voltage control code generation circuit 33, It is constituted by voltage generation circuits 379 to 377 that apply voltages to voltages 379 to 377, respectively. The voltage generation circuits 37o to 377 are output voltage control transistors Q that are turned on and off in response to voltage control codes (for example, VCoo to VCo1). +Qts These transistors Q. Resistor R to operate +Qt
1 to R4, resistors R5, R, for dividing the power supply voltage E according to the on/off operation of the transistor Qo=Qt,
Consisted of. Note that the resistors R5 and R6 are set to the same resistance value, for example. In such a configuration, for example, when the voltage control codes V C00s and C01 are both 0'', both transistors Q and rQl are in the off state, so the output voltage Eno is the same as the power supply voltage E. Next, Voltage control coat "VCoo" 0, Vc
When o□ becomes "pa1" and transistor Q1 is turned on, the output voltage Eno becomes g/2.Next, the voltage control code VC6 becomes '0", r V Coo becomes "pa1" and the transistor Q1 turns on. When Qo is turned on, the output voltage En.

は接地電位となる。このように、電圧制御コー1’VC
,o、VCo1の状態によって出力電圧”nOは3種の
電位に変化する。なお、他の出力電圧E −g  も同
様に変化する。
becomes the ground potential. In this way, the voltage control code 1'VC
, o, and VCo1, the output voltage "nO" changes to three different potentials. Note that the other output voltages E-g also change in the same way.

nl   n7 次に、上述した制御回路による電圧印加に基づくトナー
の動きについて、第9図(a) 、 (b)および第1
0図(a) 、 (b)を参照して説明する。第9図G
)および第10図(a)は、電極群20.21の電位関
係を模式的に示したもので、実線が電極群20に印加す
る電位の分布例、一点鎖線が対向電極群21に印加する
電位の分布例でちる。また、第9図(b)および第10
図(b)は、上記各電位分布例に対応するトナーの動□
きを模式的に示したものである。なお、図中n 01 
、、 n 11 +n21.n31 、n02.n12
.n22.n32は電極群20の各電極、n41 、n
51 、n61 。
nl n7 Next, regarding the movement of the toner based on voltage application by the above-mentioned control circuit, FIGS.
This will be explained with reference to FIGS. 0(a) and 0(b). Figure 9G
) and FIG. 10(a) schematically show the potential relationship of the electrode groups 20 and 21, where the solid line is an example of the distribution of the potential applied to the electrode group 20, and the dashed line is the distribution example of the potential applied to the counter electrode group 21. An example of potential distribution. In addition, FIGS. 9(b) and 10
Figure (b) shows the toner movement □ corresponding to each potential distribution example above.
This is a schematic illustration of the process. In addition, n 01 in the figure
,, n 11 +n21. n31, n02. n12
.. n22. n32 is each electrode of the electrode group 20, n41, n
51, n61.

n71.n42.n52.n62.n’72は対向電極
群21の各電極であり、■印はトナーを示している。ま
た、この場合トナーは正に帯電しているものとする。今
、ある瞬間、第9図(a)のように電位が分布していた
とすると、同図(b)に示すように、たとえば電極ni
l上のトナーはその電極からの反発力を受け、電極nθ
1よりも電位の低い電極nilあるいはn41へ向って
移動する。
n71. n42. n52. n62. n'72 is each electrode of the counter electrode group 21, and the mark ■ indicates toner. Further, in this case, it is assumed that the toner is positively charged. Now, if the potential is distributed as shown in FIG. 9(a) at a certain moment, for example, the electrode ni
The toner on l receives a repulsive force from the electrode, and the toner on the electrode nθ
It moves toward the electrode nil or n41, which has a lower potential than 1.

さらに、電極nll上のトナーは電極n21へ、電極n
51上のトナーは電極n21へそれぞれ移動する。
Further, the toner on the electrode nll is transferred to the electrode n21, and the toner on the electrode nll is transferred to the electrode n21.
The toners on the electrodes 51 move to the electrodes n21.

そして次の瞬間、電位分布は第10図(a)の状態とな
り、同図(b)に示すようにトナーが移動する。
Then, at the next moment, the potential distribution becomes the state shown in FIG. 10(a), and the toner moves as shown in FIG. 10(b).

このようにして、電位分布が右方向へ順次ずれることに
よシ、結局トナーは図面上で左から右方向へ移動して行
くことになる。すなわち、電極群2θ、21に上述した
ような電位を順次印加することにより、トナー担持体1
9の表面には左から右−万2向への進行波形の交番電界
が発生し、その交番電界の作用でトナーを電極間で振動
In this way, as the potential distribution is sequentially shifted to the right, the toner ends up moving from left to right in the drawing. That is, by sequentially applying the above-described potentials to the electrode groups 2θ and 21, the toner carrier 1
An alternating electric field with a waveform traveling from left to right is generated on the surface of the electrode 9, and the action of this alternating electric field causes the toner to vibrate between the electrodes.

浮遊、スモーク化しつつ搬送するものである。It is transported while floating and turning into smoke.

このようにして、トナーを搬送することにより現像を行
うものである。すなわち、トナー担持体19の左端部お
よび絶縁板22の下端部はトナー17中に浸漬されてい
るので、トナー担持体19の左端部および絶縁板22の
下端部には常にトナー17が存在し、トナー担持体19
および絶縁板22との摩擦によって正に帯電されている
。したがって、前述したような交番電界が発生すること
によシ、トナー17は電極間で振動、浮遊、スモーク化
しつつトナー担持体19の傾斜部19bを右上方へ向け
て搬送され、水平部19tsにおいて感光体ドラム11
上の静電潜像14に吸収されることによシ、静電潜像1
4の現像が行われる。現像に寄与しないトナーは更に右
方向へ搬送され、トナー担持体19の右端部において下
方へ落下する。落下したトナーは、トナー容器16底部
の傾斜面に沿って重力の作用で左下方へ移動し、トナー
担持体19の左端部に戻シ、攪拌器23で攪拌される。
In this way, development is performed by conveying the toner. That is, since the left end of the toner carrier 19 and the lower end of the insulating plate 22 are immersed in the toner 17, the toner 17 is always present at the left end of the toner carrier 19 and the lower end of the insulating plate 22. Toner carrier 19
and is positively charged due to friction with the insulating plate 22. Therefore, due to the generation of the above-mentioned alternating electric field, the toner 17 is conveyed toward the upper right on the inclined part 19b of the toner carrier 19 while vibrating, floating, and becoming smoked between the electrodes, and is conveyed to the horizontal part 19ts. Photosensitive drum 11
By being absorbed by the upper electrostatic latent image 14, the electrostatic latent image 1
4 development is performed. The toner that does not contribute to development is further conveyed to the right and falls downward at the right end of the toner carrier 19. The fallen toner moves to the lower left by the action of gravity along the inclined surface of the bottom of the toner container 16, returns to the left end of the toner carrier 19, and is stirred by the stirrer 23.

以上説明したような現像装置であれば、前述したような
対向電極群21を設けることによシ、各電極間において
第11図に示すような電気力線の分布が得られる。すな
わち、各電極の中心部まで電気力線が密に分布し、かつ
各電極の上方へも電気力線が延びるよりになシ、その結
果、各電極間はもちろんのこと各電極の中心付近におい
ても強い電界が発生し、トナーの移動に有効に寄与する
ごとく作用するようになる。したがって、各電極の中心
付近にあるトナーも上方への力を受けて活発に運動する
ようになシ、このため各電極の中心部にトナーが堆積す
ることがなく、横方向に移動しているトナーの運動の妨
げにならず、確実にトナーが搬送されるようになる。
In the developing device as described above, by providing the counter electrode group 21 as described above, a distribution of electric lines of force as shown in FIG. 11 can be obtained between each electrode. In other words, the lines of electric force are densely distributed to the center of each electrode, and the lines of electric force also extend above each electrode.As a result, not only between each electrode but also near the center of each electrode Also, a strong electric field is generated, which effectively contributes to the movement of toner. Therefore, the toner near the center of each electrode also receives upward force and moves actively. Therefore, the toner does not accumulate at the center of each electrode and moves laterally. Toner movement is not hindered and toner is reliably conveyed.

なお、前記実施例では、電子複写機の現像装置に適用し
た場合について説明したが、本発明はこれに限定される
ものではなく、静電潜像を用いる杉々の像記録装置の現
像装置にも適用できる。
In the above embodiment, the case where the application is applied to a developing device of an electronic copying machine has been described, but the present invention is not limited to this, and can be applied to a developing device of a Sugihan image recording device that uses an electrostatic latent image. can also be applied.

〔発明の効果〕〔Effect of the invention〕

以上詳述したように本発明によれば、電極の中心付近で
現像剤が堆積することを防止でき、これによシ現滓剤の
移動を妨げるようなことは起きず、現像剤の搬送性がよ
シ向上して確実に現像剤が搬送される現像装置を提供で
きる。
As described in detail above, according to the present invention, it is possible to prevent the developer from accumulating near the center of the electrode, thereby preventing the movement of the developer slag from occurring and improving the conveyance of the developer. It is possible to provide a developing device in which developer is reliably conveyed with improved stability.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図ないし第3図は従来検討された現像法を説明する
ためのもので、第1図は現像装置の概略図、第2図は電
極間における電気力線の分布状態を示す図、第3図は電
極の中心付近にトナーが堆積した状態を示す図、第4図
ない°し第11図は本発明の一実施例を説明するだめの
もので、第4図は全体的た構成を示す側面図、第5図は
電極群の結線状態を示す図、第6図は電極群に対して電
圧の印加制御を行う制御回路の概略構成図、第7図は第
6図における電圧制御コード発生回路の構成図、第8図
は第6図における制御電圧発生回路の構成図、第9図(
a)および第10図(a)は各電極に印加する電位分布
例を模式的に示す図、第9図(b)および第10図(b
)はトナーの動きを模式的に示す図、第11図は電極間
における電気力線の分布状態を示す図である。 11・・・感光体ドラム、14・・・静電潜像、15・
・・現像装置、16・・・トナー容器、17・・・非磁
性トナー、19・・・トナー担持体、20・・・電極群
、21・・・対向電極 、31・・・発振器、32・・
・カウンタ、33・・・電圧制御コード発生回路、34
・・・制御電圧発生回路。 出願人代理人  弁理士 鈴 江 武 彦第1図 第2図 第3図 第4図 ) 3 第5図 第7図 第8図 H@  i8.1Ch2.5 □ (l旨′ト庁長官   若  杉 和 夫  殿1、事
件の表示 特願昭58−56049号 2 発明の名称 現像装置6 3 補1’:lをする渚 事件との関係  特許出願人 (307)東京芝浦軍、気株式会社 11代理入    − (5i’l旧[の対象 明神!褐       5110□“ 7、補正の内容 明細(書の第5頁第1行目ないし第2行目にわたって「
セレン・テルル系感光層13」とあるを「有機(たとえ
ばポリビニル・カルバゾール系)感光層13」と訂正す
る。
Figures 1 to 3 are for explaining conventionally studied developing methods. Figure 1 is a schematic diagram of a developing device, Figure 2 is a diagram showing the distribution of electric lines of force between electrodes, and Figure 2 is a diagram showing the distribution of electric lines of force between electrodes. Figure 3 shows the state in which toner is deposited near the center of the electrode, Figures 4 to 11 are for explaining one embodiment of the present invention, and Figure 4 shows the overall configuration. 5 is a diagram showing the wiring state of the electrode group, FIG. 6 is a schematic configuration diagram of a control circuit that controls voltage application to the electrode group, and FIG. 7 is a voltage control code in FIG. 6. The configuration diagram of the generation circuit, Figure 8 is the configuration diagram of the control voltage generation circuit in Figure 6, and Figure 9 (
a) and FIG. 10(a) are diagrams schematically showing examples of potential distribution applied to each electrode, FIG. 9(b) and FIG. 10(b)
) is a diagram schematically showing the movement of toner, and FIG. 11 is a diagram showing the distribution state of electric lines of force between electrodes. 11... Photosensitive drum, 14... Electrostatic latent image, 15.
...Developing device, 16... Toner container, 17... Non-magnetic toner, 19... Toner carrier, 20... Electrode group, 21... Counter electrode, 31... Oscillator, 32...・
・Counter, 33...Voltage control code generation circuit, 34
...Control voltage generation circuit. Applicant's representative Patent attorney Takehiko Suzue (Figure 1, Figure 2, Figure 3, Figure 4) 3 Figure 5, Figure 7, Figure 8 Kazuo Tono 1, Indication of the case Patent application No. 1983-56049 2 Name of the invention Developing device 6 3 Supplement 1': Relationship with the Nagisa incident Patent applicant (307) Tokyo Shibaura Gun, Ki Co., Ltd. 11 Agent Enter - (5i'l old target of Myojin! Brown 5110□" 7. Details of the amendment (page 5 of the book, 1st line and 2nd line of "
"Selenium/tellurium based photosensitive layer 13" has been corrected to "organic (for example, polyvinyl/carbazole based) photosensitive layer 13".

Claims (2)

【特許請求の範囲】[Claims] (1)被現像面の近傍に設けられ少なくとも一部が被現
像面に相対向しかつ相互に離間して設けられた電極群に
時間的に変化する電位を印加することによシ、電極間で
現像剤を移動させて被現像面へ現像剤を搬送する現像装
置において、前記電極群に対向しかつこの電極群とは異
なる位相をもって配置された対向電極を設け、この対向
電極に時間的に変化する電位を印加するように構成して
なる現像装置。
(1) By applying a potential that changes over time to a group of electrodes that are provided near the surface to be developed, at least a portion of which faces the surface to be developed and is spaced apart from each other, In a developing device that transports the developer to the surface to be developed by moving the developer, a counter electrode is provided that faces the electrode group and is arranged with a phase different from that of the electrode group, and the counter electrode is A developing device configured to apply a changing potential.
(2)前記対向電極および前記電極群は、現像剤の搬送
方向と交差する方向に延在する線状の電極形状であシ、
かつ前記電極群の異なる電極間によって形成される間隙
部に前記対向電極が対向することを特徴とする特許請求
の範囲第1項記載の現像装置。
(2) the counter electrode and the electrode group have a linear electrode shape extending in a direction intersecting the developer transport direction;
2. The developing device according to claim 1, wherein the counter electrode faces a gap formed between different electrodes of the electrode group.
JP58056049A 1983-03-31 1983-03-31 Developing device Pending JPS59181375A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP58056049A JPS59181375A (en) 1983-03-31 1983-03-31 Developing device
US06/594,532 US4558941A (en) 1983-03-31 1984-03-29 Developing apparatus
DE19843411946 DE3411946A1 (en) 1983-03-31 1984-03-30 DEVELOPMENT DEVICE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58056049A JPS59181375A (en) 1983-03-31 1983-03-31 Developing device

Publications (1)

Publication Number Publication Date
JPS59181375A true JPS59181375A (en) 1984-10-15

Family

ID=13016224

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58056049A Pending JPS59181375A (en) 1983-03-31 1983-03-31 Developing device

Country Status (1)

Country Link
JP (1) JPS59181375A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60257461A (en) * 1984-05-29 1985-12-19 ゼロツクス コーポレーシヨン Toner carrier
JPS6313069A (en) * 1986-07-03 1988-01-20 Canon Inc Electric field curtain type developing device
JPS6313059A (en) * 1986-07-03 1988-01-20 Canon Inc Developing method
US6708014B2 (en) 2001-03-15 2004-03-16 Ricoh Company, Ltd. Electrostatic transportation device, development device and image formation apparatus
US8107862B2 (en) 2006-08-28 2012-01-31 Brother Kogyo Kabushiki Kaisha Image forming device having developer vibration element
US8600270B2 (en) 2006-07-04 2013-12-03 Brother Kogyo Kabushiki Kaisha Developer transport substrate configuration for an image forming apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60257461A (en) * 1984-05-29 1985-12-19 ゼロツクス コーポレーシヨン Toner carrier
JPS6313069A (en) * 1986-07-03 1988-01-20 Canon Inc Electric field curtain type developing device
JPS6313059A (en) * 1986-07-03 1988-01-20 Canon Inc Developing method
US6708014B2 (en) 2001-03-15 2004-03-16 Ricoh Company, Ltd. Electrostatic transportation device, development device and image formation apparatus
US8600270B2 (en) 2006-07-04 2013-12-03 Brother Kogyo Kabushiki Kaisha Developer transport substrate configuration for an image forming apparatus
US8107862B2 (en) 2006-08-28 2012-01-31 Brother Kogyo Kabushiki Kaisha Image forming device having developer vibration element

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