JPH0353227Y2 - - Google Patents
Info
- Publication number
- JPH0353227Y2 JPH0353227Y2 JP1980189150U JP18915080U JPH0353227Y2 JP H0353227 Y2 JPH0353227 Y2 JP H0353227Y2 JP 1980189150 U JP1980189150 U JP 1980189150U JP 18915080 U JP18915080 U JP 18915080U JP H0353227 Y2 JPH0353227 Y2 JP H0353227Y2
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- latent image
- dielectric layer
- recording
- electrostatic latent
- 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
- 239000011159 matrix material Substances 0.000 claims description 15
- 230000003068 static effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Landscapes
- Electrophotography Using Other Than Carlson'S Method (AREA)
- Fax Reproducing Arrangements (AREA)
- Dot-Matrix Printers And Others (AREA)
- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
Description
【考案の詳細な説明】
本考案は移送される記録体の表面に形成された
誘電体層にマトリツクスピン電極により静電潜像
を形成する静電潜像形成装置の改良に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of an electrostatic latent image forming device that forms an electrostatic latent image using a matrix spin electrode on a dielectric layer formed on the surface of a recording medium being transported.
この種の従来の静電潜像形成装置を第１図に示
す。図中、１は静電記録紙等の記録体、２は除電
コロトロン、３はマトリツクスピン電極である。
静電記録紙１は絶縁性支持体１ａの表面に導電層
１ｂと誘電体層１ｃとを順次形成してなる。誘電
体層１ｃは厚さ10〜20μｍでその表面には５〜
10μｍの凹凸面が形成されている。マトリツクス
ピン電極３は記録電極３ａと補助電極３ｂとより
なり、これらの各電極は、誘電体層１ｃに接触し
て設けられ、それぞれ記録電圧をE1，E2に分割
する周知のマトリツクス駆動方式により駆動され
る。いま除電コロトロン１に交流電圧を印加する
とともにマトリツクスピン電極３の各電極に記録
電圧E1，E2をそれぞれ印加しマトリツクス駆動
を行つて記録体１を矢印方向に移送すると、記録
電極３ａと誘電体層１ｃとの間の空〓の電圧が放
電開始電圧以上になると記録電極３ａと誘電体層
１ｃとの間で放電が発生して静電潜像が形成され
る。この場合放電を発生させるためには記録電圧
E1，E2は共に300V以上が必要であり高耐圧トラ
ンジスタ等のスイツチング素子を用いなければな
らないため、装置の小型化が困難であつた。ま
た、静電潜像形成後に磁気ブラシ現像器で現像を
行う場合、現像後の印字濃度を濃くするために
は、潜像形成時の表面電圧V0を大きくする必要
があり高い電圧を記録電極３ａに印加しなければ
ならず、容量の大きな電源が必要となる。 A conventional electrostatic latent image forming apparatus of this type is shown in FIG. In the figure, 1 is a recording medium such as electrostatic recording paper, 2 is a static eliminating corotron, and 3 is a matrix spin electrode.
The electrostatic recording paper 1 is formed by sequentially forming a conductive layer 1b and a dielectric layer 1c on the surface of an insulating support 1a. The dielectric layer 1c has a thickness of 10 to 20 μm and has a thickness of 5 to 20 μm on its surface.
An uneven surface of 10 μm is formed. The matrix spin electrode 3 consists of a recording electrode 3a and an auxiliary electrode 3b, and each of these electrodes is provided in contact with the dielectric layer 1c, and each electrode is driven by a well-known matrix drive that divides the recording voltage into E 1 and E 2 . driven by the system. Now, when an AC voltage is applied to the static eliminating corotron 1 and recording voltages E 1 and E 2 are applied to each electrode of the matrix pin electrode 3 to drive the matrix and move the recording medium 1 in the direction of the arrow, the recording electrode 3a and When the voltage in the air between the recording electrode 3a and the dielectric layer 1c becomes equal to or higher than the discharge starting voltage, a discharge occurs between the recording electrode 3a and the dielectric layer 1c, forming an electrostatic latent image. In this case, the recording voltage must be
Both E 1 and E 2 require a voltage of 300 V or more, and switching elements such as high-voltage transistors must be used, making it difficult to miniaturize the device. In addition, when developing with a magnetic brush developer after forming an electrostatic latent image, in order to increase the print density after development, it is necessary to increase the surface voltage V 0 at the time of forming the latent image. 3a, which requires a power source with a large capacity.
このような従来のマトリツクスピン電極を用い
た静電潜像形成装置の構成は公知のものである
が、この構成では上述のように必要な潜像強度を
得るために、マトリツクスピン電極に与えるべき
電圧を低くすることができないという問題があつ
た。 The configuration of an electrostatic latent image forming device using such a conventional matrix spin electrode is well known, but in this configuration, as described above, in order to obtain the necessary latent image intensity, the matrix spin electrode is There was a problem that the voltage to be applied could not be lowered.
このように、マトリツクスピン電極を用いた従
来の静電潜像形成装置は、駆動回路が簡単化され
るという利点を有する反面、各種の欠点を有して
いた。 As described above, the conventional electrostatic latent image forming apparatus using matrix spin electrodes has the advantage of simplifying the driving circuit, but has various drawbacks.
本考案は上述の各種の欠点を解決するためのも
ので、電源容量、装置の小型化を達成できしかも
印字濃度を濃くすることのできる静電潜像形成装
置を提供することを目的としている。 The present invention is intended to solve the above-mentioned various drawbacks, and aims to provide an electrostatic latent image forming apparatus that can reduce the power supply capacity and the size of the apparatus, and can increase the print density.
次に第２図乃至第４図に関連して本考案の実施
例を説明する。 Next, embodiments of the present invention will be described with reference to FIGS. 2 to 4.
第２図は本考案に係る静電潜像形成装置の実施
例の概要を示す正面図で、図中、１１は記録体１
の誘電体層１ｃに接触させて設けられた一様帯電
用のコロナ放電器（一様帯電器）である。なお、
従来と同一構成の部材は同符号で表わしている。 FIG. 2 is a front view showing an outline of an embodiment of the electrostatic latent image forming apparatus according to the present invention, and in the figure, 11 is a recording medium 1.
This is a corona discharger (uniform charger) for uniform charging provided in contact with the dielectric layer 1c. In addition,
Components having the same configuration as those of the conventional device are indicated by the same reference numerals.
次にこの静電潜像形成装置の作用について説明
する。 Next, the operation of this electrostatic latent image forming device will be explained.
矢印方向に移送される記録体１の誘電体層１ｃ
はまずコロナ放電器１１により一様に正に帯電さ
れる。この場合、図示を省略したが、あらかじめ
除電コロトロンにより表面の帯電を完全に除いて
から帯電させることが望ましい。このように正に
帯電した誘電体層１ｃがマトリツクスピン電極３
に対向する位置に移送されると、補助電極３ｂに
正の電圧を印加し記録電極３ａに負の電圧を印加
することにより記録電極３ａと誘電体層１ｃとの
間で空気放電が発生し帯電電荷が選択的に除去さ
れて静電潜像が形成されるが、この場合の潜像強
度は、一様帯電時の表面電位をVsとし潜像形成
時の表面電位をV0とすると、Vs−V0となる。 Dielectric layer 1c of recording medium 1 transported in the direction of the arrow
is first uniformly and positively charged by the corona discharger 11. In this case, although not shown in the drawings, it is desirable to completely remove the charge on the surface using a static eliminating corotron before charging. The positively charged dielectric layer 1c serves as the matrix spin electrode 3.
When the electrode is moved to a position facing the auxiliary electrode 3b and a negative voltage is applied to the recording electrode 3a, an air discharge is generated between the recording electrode 3a and the dielectric layer 1c, causing charging. Charges are selectively removed and an electrostatic latent image is formed. In this case, the intensity of the latent image is as follows, where the surface potential when uniformly charged is V s and the surface potential when the latent image is formed is V 0 . It becomes V s −V 0 .
第３図は一様帯電電位と潜像強度との関係を示
すグラフ（E1＝−300V、E2＝300V）で、本図よ
り、一様帯電電位が高くなるに従つて潜像強度が
大きくなつていることが分かる。 Figure 3 is a graph showing the relationship between uniform charging potential and latent image strength (E 1 = -300V, E 2 = 300V). From this diagram, it can be seen that as the uniform charging potential increases, the latent image strength increases. I can see that it's getting bigger.
第４図は、記録電極印加電圧E1をパラメータ
として、補助電極印加電圧E2と潜像強度との関
係を示したものである。本図より、補助電極印加
電圧E2を小さくしても潜像強度は余り変化せず
かつ潜像強度の変化はほぼ直線状であることが分
る。なお、図中○印で示す位置ＡはVs＝０とし
た従来装置の潜像強度（E1＝−300V、E2＝
300V）を示している。また本図より、例えば記
録電極印加電圧E1を−150V（“１”の状態）とし
補助電極印加電圧E2を0V（“０”の状態）とする
と、潜像強度は0V（“０”の状態）となり潜像が
形成されていないことが分かる。逆にE1を0V
（“０”の状態）としE2を150V（“１”の状態）と
しても潜像強度は0V（“０”の状態）となり、同
様に潜像が形成されない。しかし、E1を−150V
（“１”の状態）としE2を150V（“１”の状態）と
したときは、潜像強度約140V（“１”の状態）が
得られる。すなわち、E1，E2を共に従来の1/2程
度としたパルス駆動電圧でマトリツクス駆動を行
うことが可能であるとともに、従来の約1.7倍程
度の潜像強度を得ることが可能である。 FIG. 4 shows the relationship between the auxiliary electrode applied voltage E 2 and the latent image intensity using the recording electrode applied voltage E 1 as a parameter. From this figure, it can be seen that even if the auxiliary electrode applied voltage E 2 is reduced, the latent image intensity does not change much and the change in the latent image intensity is almost linear. Note that position A indicated by a circle in the figure shows the latent image intensity of the conventional device when V s = 0 (E 1 = -300V, E 2 =
300V). Also, from this figure, for example, if the recording electrode applied voltage E 1 is -150V (“1” state) and the auxiliary electrode applied voltage E 2 is 0V (“0” state), the latent image intensity is 0V (“0” state). ), indicating that no latent image is formed. Conversely, E 1 is 0V
(state of "0") and E2 is 150V (state of "1"), the latent image intensity is 0V (state of "0"), and similarly no latent image is formed. However, E 1 at −150V
(state of "1") and when E 2 is set to 150V (state of "1"), a latent image intensity of about 140V (state of "1") is obtained. That is, it is possible to perform matrix driving with a pulse drive voltage in which both E 1 and E 2 are about half of the conventional values, and it is also possible to obtain a latent image intensity about 1.7 times that of the conventional ones.
上述の説明では、各電極３ａ，３ｂを誘電体層
１ｃに接触させる例について述べたが、各電極３
ａ，３ｂを誘電体層より適当量離し非接触状態で
潜像形成を行わせることも勿論可能で、この場合
は誘電体層の表面に凹凸を形成せずに滑らかな状
態としてもよい。 In the above description, an example has been described in which each electrode 3a, 3b is brought into contact with the dielectric layer 1c.
Of course, it is also possible to form a latent image in a non-contact state by separating a and 3b from the dielectric layer by an appropriate amount, and in this case, the surface of the dielectric layer may be in a smooth state without forming irregularities.
さらに、第３，４図のグラフは、100μｍ程度
の絶縁性支持体上に約1μｍの導電層を設け、そ
の上に５〜10μｍの凹凸面を有する誘電体層を焼
結した構造の記録体についてのデータを記載した
ものであるが、現在市販されている静電記録紙を
使用しても本考案は適用可能である。 Furthermore, the graphs in Figures 3 and 4 show a recording material with a structure in which a conductive layer of approximately 1 μm is provided on an insulating support of approximately 100 μm, and a dielectric layer having an uneven surface of 5 to 10 μm is sintered thereon. However, the present invention is applicable even if currently commercially available electrostatic recording paper is used.
以上述べたように、本考案によれば、各電極の
印加電圧を従来の約1/2程度に低減しても従来よ
り大きな潜像強度を得ることができるため、高耐
圧トランジスタ等のスイツチング素子を必要とせ
ず、かつ電源容量、装置の小型化を達成でき、し
かも充分な印字濃度を得ることが可能である。 As described above, according to the present invention, even if the voltage applied to each electrode is reduced to about 1/2 of that of the conventional one, it is possible to obtain a latent image strength higher than that of the conventional one, so It is possible to reduce the power supply capacity and the size of the device, and to obtain sufficient print density.
すなわち、誘電体表面が電位Vsに予備帯電さ
れているので、記録電極への印加電圧VPおよび
補助電極への印加電圧VNはそれぞれVP−Vs，VN
＋Vsに変化し、この電位差は2Vs＋VN−VPとな
り、実効的には帯電電位の２倍の電圧が余分に印
加されることになる。 That is, since the dielectric surface is precharged to the potential Vs, the voltage applied to the recording electrode V P and the voltage applied to the auxiliary electrode V N are V P −Vs, V N , respectively.
+Vs, and this potential difference becomes 2Vs+V N -V P , which effectively means that an extra voltage twice the charging potential is applied.
従つて、この分だけ空隙電圧が増加し、高い潜
像電位を得ることが可能となり、ドライバ電圧も
低くすることが可能となる。 Therefore, the air gap voltage increases by this amount, making it possible to obtain a high latent image potential and also making it possible to lower the driver voltage.
第１図は従来の静電潜像形成装置の概要を示す
正面図、第２図は本考案に係る静電潜像形成装置
の実施例を示す正面概要図、第３図は同コロナ放
電器による一様帯電電位と潜像強度の関係を示す
グラフ、第４図は同補助電極印加電圧と潜像強度
の関係を示すグラフで、図中、１は記録体、１ａ
は絶縁性支持体、１ｂは導電層、１ｃは誘電体
層、３はマトリツクスピン電極、３ａは記録電
極、３ｂは補助電極、１１はコロナ放電器であ
る。
Fig. 1 is a front view schematically showing a conventional electrostatic latent image forming device, Fig. 2 is a front schematic view showing an embodiment of the electrostatic latent image forming device according to the present invention, and Fig. 3 is a corona discharger of the same. 4 is a graph showing the relationship between the voltage applied to the auxiliary electrode and the latent image intensity. In the figure, 1 is the recording medium, 1a
1b is an insulating support, 1b is a conductive layer, 1c is a dielectric layer, 3 is a matrix spin electrode, 3a is a recording electrode, 3b is an auxiliary electrode, and 11 is a corona discharger.
Claims (1)
に静電潜像を形成する静電潜像形成装置であつ
て、前記誘電体層の表面を一様に所定の電位に帯
電する一様帯電器１１と、前記誘電体層との間で
空気放電を行わせて前記誘電体層の帯電電荷を選
択的に除去することにより前記誘電体層上に静電
潜像を形成するための補助電極３ｂと記録電極３
ａよりなる潜像形成用のマトリツクスピン電極３
と、前記マトリツクスピン電極の補助電極３ｂと
記録電極３ａにそれぞれ異なる極性の電圧を印加
してマトリツクス駆動するための電源（補助電極
用電源E2、記録電極用電源E1）とを備え、該補
助電極用電源は前記補助電極３ｂに前記一様帯電
器１１と同極性でその絶対値が前記記録電極３ａ
側に印加される電圧よりも小さい電圧を印加する
ように構成されてなることを特徴とする静電潜像
形成装置。 An electrostatic latent image forming device that forms an electrostatic latent image on a dielectric layer formed on the surface of a recording medium to be transported, the device uniformly charging the surface of the dielectric layer to a predetermined potential. Assisting in forming an electrostatic latent image on the dielectric layer by selectively removing charges on the dielectric layer by causing air discharge between the charger 11 and the dielectric layer. Electrode 3b and recording electrode 3
A matrix pin electrode 3 for forming a latent image consisting of a
and a power source (auxiliary electrode power source E 2 , recording electrode power source E 1 ) for driving the matrix by applying voltages of different polarities to the auxiliary electrode 3b and the recording electrode 3a of the matrix spin electrode, respectively, The auxiliary electrode power source is supplied to the auxiliary electrode 3b with the same polarity as the uniform charger 11 and whose absolute value is the same as that of the recording electrode 3a.
An electrostatic latent image forming device characterized in that it is configured to apply a voltage smaller than the voltage applied to the side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980189150U JPH0353227Y2 (en) | 1980-12-27 | 1980-12-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980189150U JPH0353227Y2 (en) | 1980-12-27 | 1980-12-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57112347U JPS57112347U (en) | 1982-07-12 |
| JPH0353227Y2 true JPH0353227Y2 (en) | 1991-11-20 |
Family
ID=29993139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1980189150U Expired JPH0353227Y2 (en) | 1980-12-27 | 1980-12-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0353227Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS536030A (en) * | 1976-07-06 | 1978-01-20 | Mitsubishi Electric Corp | Electrostatography |
-
1980
- 1980-12-27 JP JP1980189150U patent/JPH0353227Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS536030A (en) * | 1976-07-06 | 1978-01-20 | Mitsubishi Electric Corp | Electrostatography |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57112347U (en) | 1982-07-12 |
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