JP2534327B2 - Image forming method in electrophotographic apparatus - Google Patents
Image forming method in electrophotographic apparatusInfo
- Publication number
- JP2534327B2 JP2534327B2 JP63205441A JP20544188A JP2534327B2 JP 2534327 B2 JP2534327 B2 JP 2534327B2 JP 63205441 A JP63205441 A JP 63205441A JP 20544188 A JP20544188 A JP 20544188A JP 2534327 B2 JP2534327 B2 JP 2534327B2
- Authority
- JP
- Japan
- Prior art keywords
- photoconductor
- charger
- transfer
- charging
- charge
- 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 - Fee Related
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Description
【発明の詳細な説明】 産業上の利用分野 本発明は、電子写真装置における画像形成方法に関す
る。TECHNICAL FIELD The present invention relates to an image forming method in an electrophotographic apparatus.
従来の技術 まず、第９図及び第10図に従来例を示す。１は感光体
で、この感光体１の軸２はモータ３に連結されていると
ともに接地されている。この感光体１の外周には、電源
４の負極に接続された帯電用帯電器５と、レーザー発光
部６とミラー７とよりなる露光部８と、回転軸９がモー
タ10に連結されるとともに電源11の負極に接続されたマ
グネツトローラ12とブレード13とをトナー容器（図示せ
ず）に装着してなる現像器14と、電源15の負極に接続さ
れた転写用帯電器16と、除電器である除電ランプ17とが
配列されている。前記モータ3,10と前記電源4,11,15と
は制御回路18に接続されている。Conventional Technology First, a conventional example is shown in FIGS. 9 and 10. Reference numeral 1 is a photoconductor, and a shaft 2 of the photoconductor 1 is connected to a motor 3 and is grounded. On the outer periphery of the photoconductor 1, a charging charger 5 connected to a negative electrode of a power source 4, an exposure unit 8 including a laser emission unit 6 and a mirror 7, and a rotation shaft 9 are connected to a motor 10. A developing device 14 in which a magnet roller 12 and a blade 13 connected to the negative electrode of the power source 11 are mounted in a toner container (not shown), a transfer charger 16 connected to the negative electrode of the power source 15, and a removing device. A static elimination lamp 17, which is an electric appliance, is arranged. The motors 3, 10 and the power sources 4, 11, 15 are connected to a control circuit 18.
次に、動作について説明する。先ずモータ3,10を駆動
して感光体１と現像器14のマグネツトローラ12とを回転
させ、帯電用帯電器５によりマイナスの電圧を感光体１
の全周に印加して感光体１の外周面を帯電させ、この一
回目の帯電部分に除電ランプ17からの光線を照射して感
光体１の電荷を除電し、続けて帯電用帯電器５により感
光体１にマイナスの電圧を印加することにより、除電ラ
ンプ17で除電された除電部分を帯電させ、この二回目の
帯電部分に露光部８からレーザー光を走査することによ
り、印字領域外の電荷を除電するとともに印字領域内に
おいては画像情報以外の部分の電荷を除電して静電潜像
を形成し、この静電潜像を現像器14により現像する。す
なわち、現像器14のトナーが感光体１上のマイナス電位
の静電潜像に付着する。そして、感光体１と転写用帯電
器16との間に搬送されてきた転写用紙に転写用帯電器16
からマイナスの電圧を印加して帯電させることにより、
転写用紙に感光体１上の現像画像を転写する。Next, the operation will be described. First, the motors 3 and 10 are driven to rotate the photoconductor 1 and the magnet roller 12 of the developing device 14, and a negative voltage is applied by the charging charger 5 to the photoconductor 1.
Is applied to the entire circumference of the photosensitive member 1 to charge the outer peripheral surface of the photosensitive member 1, and the first charging portion is irradiated with a light beam from the discharging lamp 17 to discharge the electric charge of the photosensitive member 1, and then the charging charger 5 is charged. A negative voltage is applied to the photoconductor 1 to charge the charge-eliminating portion that has been discharged by the charge-eliminating lamp 17, and the second charged portion is scanned with laser light from the exposure unit 8 to remove the charge from outside the print area. In addition to removing the electric charges, the electric charges of portions other than the image information are removed in the print area to form an electrostatic latent image, and the electrostatic latent image is developed by the developing device 14. That is, the toner of the developing device 14 adheres to the negative electrostatic latent image on the photoconductor 1. Then, the transfer charger 16 is attached to the transfer sheet conveyed between the photoconductor 1 and the transfer charger 16.
By applying a negative voltage from
The developed image on the photoconductor 1 is transferred onto the transfer paper.
以上の動作を第10図のタイミングチヤートに示すと、
Ａは感光体１とマグネツトローラ12と用紙送り機構（図
示せず）とを駆動するための各モータの動作、Ｂは感光
体１を帯電させるための帯電用帯電器５の動作、Ｃが帯
電層にレーザー光を走査して静電潜像を形成するための
露光部８の動作で、Ｃの全動作中P1のパルスをもつて示
す動作が印字領域中における画像情報以外の部分の電荷
を除電する動作であり、それ以外の動作は印字領域外の
電荷を除電する動作である。Ｄは感光体１上の現像画像
を転写用紙に転写するための転写用帯電器16の動作、Ｅ
は印字動作に先立つて感光体１の一回目の帯電部分を除
電するための除電ランプ17の動作、Ｆは静電潜像を現像
するためモータ10で現像器14のマグネツトローラ12を回
転させる動作で、これらの動作は制御回路18により制御
される。第10図のタイミングチヤートにおける横軸に示
す目盛の単位は時間で、4secで感光体１が一回転する。The above operation is shown in the timing chart of FIG.
A is the operation of each motor for driving the photoconductor 1, the magnet roller 12, and the paper feed mechanism (not shown), B is the operation of the charging charger 5 for charging the photoconductor 1, and C is the charging. In the operation of the exposure unit 8 for scanning the layer with laser light to form an electrostatic latent image, the operation indicated by the pulse of P 1 during the entire operation of C is the charge of the portion other than the image information in the print area. Is an operation of removing electric charge, and the other operation is an operation of removing electric charge outside the printing area. D is the operation of the transfer charger 16 for transferring the developed image on the photoconductor 1 to the transfer paper, E
Is the operation of the charge eliminating lamp 17 for eliminating the charge of the first charged portion of the photoconductor 1 prior to the printing operation, and F is the motor 10 for rotating the magnet roller 12 of the developing device 14 to develop the electrostatic latent image. In operation, these operations are controlled by the control circuit 18. The unit of the scale shown on the horizontal axis in the timing chart of FIG. 10 is time, and the photosensitive member 1 makes one rotation in 4 seconds.
発明が解決しようとする課題 以上のように、安定した画像を形成するために、最初
に感光体１を一回転させてその全周に帯電用帯電器５に
より帯電させ、この一回目の帯電部分を除電ランプ17に
より除電し、しかる後に、帯電用帯電器５により感光体
１を帯電させ、この二回目の帯電部分に露光部８により
静電潜像を形成するため、一回目の帯電動作のために感
光体１を一回転（時間にして4sec）させなければなら
ず、最初の印字時間が長くなる欠点を有している。As described above, in order to form a stable image, the photosensitive member 1 is first rotated once to be charged by the charging charger 5 all around the photosensitive member 1, and this first charging portion is charged. Is discharged by the discharging lamp 17, and thereafter, the photoconductor 1 is charged by the charging charger 5 and the electrostatic latent image is formed on the second charging portion by the exposure unit 8. Therefore, the photoconductor 1 has to be rotated once (4 seconds in time), which has a drawback that the initial printing time becomes long.
課題を解決するための手段 感光体の外周に沿わせて少なくとも帯電用帯電器と露
光部とトナーを使用する現像器と転写用帯電器と除電器
とを配列してなる電子写真装置において、前記感光体を
始動させると同時に前記転写用帯電器からの印加電圧に
より前記感光体の外周面を帯電させ、この帯電部分全体
に前記除電器により光線を照射して除電し、この除電部
分に前記帯電用帯電器からの印加電圧により帯電させ、
この帯電部分に前記露光部よりレーザー光を照射して静
電潜像を形成し、この静電潜像を前記現像器により現像
し、前記転写用帯電器からの印加電圧により前記感光体
と前記転写用帯電器との間に搬送される転写用紙に前記
感光体上の現像画像を転写するようにした。Means for Solving the Problems In an electrophotographic apparatus in which at least a charging charger, an exposing portion, a developing device using toner, a transferring charger and a charge eliminator are arranged along the outer periphery of a photoreceptor, At the same time when the photoconductor is started, the outer peripheral surface of the photoconductor is charged by the applied voltage from the transfer charger, and the entire static charge portion is irradiated with a light beam by the static eliminator to remove the charge, and the static charge portion is charged with the charge. Charging by the applied voltage from the charger for
The charged portion is irradiated with laser light from the exposing portion to form an electrostatic latent image, the electrostatic latent image is developed by the developing device, and the photosensitive member and the photosensitive member are exposed by the voltage applied from the transfer charging device. The developed image on the photoconductor is transferred onto a transfer sheet conveyed between the transfer charger and the transfer charger.
作用 転写動作以外のタイミングにおいては、本来感光体上
の現像画像を転写用紙に転写する転写用帯電器を用いて
感光体を帯電することにより、除電前に感光体の全周を
帯電する時間を半減することができ、これにより、最初
の印字時間を短縮することができる。Action At times other than the transfer operation, the transfer charger, which originally transfers the developed image on the photoreceptor to the transfer paper, is used to charge the photoreceptor so that the entire circumference of the photoreceptor is charged before the charge is removed. It can be halved, and the initial printing time can be shortened.
実施例 本発明の第一の実施例を第１図ないし第３図に基づい
て説明する。第９図及び第10図において説明した部分と
同一部分は同一符号を用い説明も省略する（以下同
様）。電子写真装置の構造は第９図に示すものと同一で
ある。第３図のフローチヤートに示すように、電源が投
入され、印字命令有りの状態が確認された時は、モータ
3,10と用紙送り機構を駆動するモータ（図示せず）と露
光部８と除電ランプ17と転写用帯電器16とがオン状態に
維持され、感光体１とマグネツトローラ12と用紙送り機
構とが回転する。第２図のタイミングチヤートではA,C,
D,E,Fの動作である。すなわち、感光体１が回転し始め
ると同時に転写用帯電器16が感光体１にマイナスの電圧
を印加してこの感光体１を帯電させる。約２秒のウエイ
ト時間を経過した後に、帯電用帯電器５がオン状態に維
持されて感光体１にマイナスの電圧を印加し感光体１を
帯電させる。この動作は第２図のタイミングチヤートで
はＢの動作である。一方、除電ランプ17はその前面を通
過する感光体１の帯電部分に光線を照射して一回目の帯
電部分を除電する。この除電部分は帯電用帯電器５の前
面を通過する時にこの帯電用帯電器５により二回目の帯
電がなされ、その直後から、第２図のタイミングチヤー
トＣの動作の内P1のパルス波形で示すタイミングで露光
部８が感光体１上の二回目の帯電部分にレーザー光を走
査することにより静電潜像が形成される。続いて、電源
11から現像器14のマグネツトローラ12に現像バイアスが
印加されトナーが静電潜像に付着してトナー像が形成さ
れる。続いて、感光体１と転写用帯電器16との間に搬送
された転写用紙が転写用帯電器16により電圧を印加さ
れ、感光体１上の現像画像は転写用紙に転写される。そ
の後に、帯電用帯電器５がオフとなり、続いて、マグネ
ツトローラ12への現像バイアスが遮断され、転写用帯電
器16がオフになり、印字命令が有れば第３図に示すフロ
ーチヤートにおける帯電用帯電器５オンの第４ステツプ
に移行し、印字命令がなければ、モータ3,10と紙送り機
構のモータと露光部８と除電ランプ17とがオフになる。Embodiment A first embodiment of the present invention will be described with reference to FIGS. 1 to 3. The same parts as those described in FIGS. 9 and 10 are designated by the same reference numerals, and the description thereof will be omitted (the same applies hereinafter). The structure of the electrophotographic apparatus is the same as that shown in FIG. As shown in the flow chart of FIG. 3, the motor is turned on when the power is turned on and the status with the print command is confirmed.
3, 10 and a motor (not shown) for driving the paper feed mechanism, the exposure unit 8, the charge eliminating lamp 17, and the transfer charger 16 are maintained in the ON state, and the photoconductor 1, the magnet roller 12, and the paper feed mechanism are connected to each other. Rotate. In the timing chart of Fig. 2, A, C,
These are D, E, and F operations. That is, at the same time when the photoconductor 1 starts to rotate, the transfer charger 16 applies a negative voltage to the photoconductor 1 to charge the photoconductor 1. After the wait time of about 2 seconds has passed, the charging charger 5 is maintained in the ON state and a negative voltage is applied to the photoconductor 1 to charge the photoconductor 1. This operation is operation B in the timing chart of FIG. On the other hand, the charge elimination lamp 17 irradiates the charged portion of the photoconductor 1 passing through the front surface thereof with a light beam to eliminate the charge of the first charged portion. This static elimination portion is charged a second time by the charging charger 5 when passing the front surface of the charging charger 5, and immediately after that, the pulse waveform of P 1 in the operation of the timing chart C in FIG. At the timing shown, the exposure unit 8 scans the charged portion of the second time on the photoconductor 1 with a laser beam to form an electrostatic latent image. Then power
A developing bias is applied from 11 to the magnet roller 12 of the developing device 14, and the toner adheres to the electrostatic latent image to form a toner image. Then, the transfer sheet conveyed between the photoconductor 1 and the transfer charger 16 is applied with a voltage by the transfer charger 16, and the developed image on the photoreceptor 1 is transferred to the transfer sheet. After that, the charging charger 5 is turned off, the developing bias to the magnet roller 12 is cut off, the transfer charger 16 is turned off, and if there is a print command, the flow chart shown in FIG. In the fourth step of turning on the charger 5 for charging, and if there is no print command, the motors 3 and 10, the motor of the paper feeding mechanism, the exposure unit 8 and the discharge lamp 17 are turned off.
以上のように、帯電用帯電器５と転写用帯電器16とは
略180度の間隔で対向配置され、感光体１が始動してか
ら転写までの間に転写用帯電器16を利用して感光体１を
帯電させることができるので、除電ランプ17による除電
前の帯電動作時間を半減することができる。これによ
り、最初の一枚目の印字時間を短縮することができる。As described above, the charging charger 5 and the transfer charger 16 are arranged to face each other at an interval of about 180 degrees, and the transfer charger 16 is used between the start of the photoconductor 1 and the transfer. Since the photoconductor 1 can be charged, the charging operation time before the charge removal by the charge removal lamp 17 can be halved. As a result, the printing time for the first sheet can be shortened.
なお、第４図に示すように、電圧を変えることができ
る電源19の負極に転写用帯電器16を接続することによ
り、感光体１への帯電動作と転写用紙への帯電動作とを
最適な条件に設定することができる。本実施例において
は、前者が5.0ないし5.2KV、後者が4.3ないし4.8KVであ
る。また、電圧が一定で電流を変えることができる電源
に転写用帯電器16を接続してもよい。As shown in FIG. 4, by connecting the transfer charger 16 to the negative electrode of the power supply 19 capable of changing the voltage, the charging operation for the photoconductor 1 and the charging operation for the transfer paper are optimized. It can be set in the conditions. In this embodiment, the former is 5.0 to 5.2 KV and the latter is 4.3 to 4.8 KV. Further, the transfer charger 16 may be connected to a power source that can change the current with a constant voltage.
次いで、本発明の第二の実施例を第５図ないし第８図
に基づいて説明する。本実施例における現像器14はマイ
ナスの現像バイアスが印加される。すなわち、マグネツ
トローラ12の回転軸９は電源11の負極に接続され、これ
により、現像器14の磁性トナーはマイナスの電位を帯び
るものである。このため、転写用帯電器16を電源15の負
極と正極とに選択的に接続する極性切替スイツチ20が設
けられている。したがつて、感光体１上の現像画像を転
写用紙に転写する前のタイミングで、転写用帯電器16に
より感光体１を帯電する時は、第５図に示すように、転
写用帯電器16を極性切替スイツチ20により電源15の負極
に接続し、転写のタイミングにおいては、第６図に示す
ように、転写用帯電器16を極性切替スイツチ20により電
源15の正極に接続し、トナーの極性と異なる正極の電位
を転写用紙に与える。すなわち、本実施例は、感光体１
をマイナスに帯電させ、この帯電部分に露光部８からレ
ーザー光を走査してマイナスの帯電部分を除電して静電
潜像を形成し、この除電部分にマイナスのトナーを付着
する反転現像方式を採用したもので、前記実施例におけ
る正規現像方式とは異なるが、転写用帯電器16を利用し
て感光体１を帯電すると言う技術思想は前記実施例と同
一である。Next, a second embodiment of the present invention will be described with reference to FIGS. A negative developing bias is applied to the developing device 14 in this embodiment. That is, the rotating shaft 9 of the magnet roller 12 is connected to the negative electrode of the power source 11, so that the magnetic toner of the developing device 14 has a negative potential. For this reason, a polarity switching switch 20 that selectively connects the transfer charger 16 to the negative electrode and the positive electrode of the power supply 15 is provided. Therefore, when the photoconductor 1 is charged by the transfer charger 16 at the timing before the developed image on the photoconductor 1 is transferred onto the transfer sheet, as shown in FIG. Is connected to the negative electrode of the power source 15 by the polarity switching switch 20, and at the transfer timing, the transfer charger 16 is connected to the positive electrode of the power source 15 by the polarity switching switch 20 as shown in FIG. A positive electrode potential that is different from that of the That is, in this embodiment, the photoconductor 1
Is negatively charged, the exposed portion 8 scans the charged portion with a laser beam to eliminate the charge on the negatively charged portion to form an electrostatic latent image, and a negative toner is attached to the neutralized portion. Although adopted, the technical idea of charging the photoconductor 1 by using the transfer charger 16 is the same as that of the above-described embodiment, although it is different from the regular developing method in the above-mentioned embodiment.
本実施例においては、第８図のフローチヤートに示す
ように、電源が投入され、印字命令有りの状態が確認さ
れた時は、モータ3,10と用紙送り機構を駆動するモータ
（図示せず）と除電ランプ17と帯電用帯電器５と現像バ
イアスがオン状態に維持され、感光体１とマグネツトロ
ーラ12とが回転するとともに、極性切替スイツチ20が転
写用帯電器16を電源15の負極に接続し、転写用帯電器16
が一定時間オン状態に維持される。これらの動作は第７
図のタイミングチヤートではA,B,D,E,Fの動作で、回転
する感光体１は両帯電器5,16からのマイナスの印加電圧
により帯電される。また、除電ランプ17はその前面を通
過する帯電部分に光線を照射して一回目の帯電層を除電
する。この除電部分は帯電用帯電器５の前面を通過する
時にこの帯電用帯電器５により二回目の帯電がなされ
る。続いて、第７図のタイミングチヤートＣの動作で露
光部８に電源入力され、Ｃの動作中にP2のパルス波形で
示す変調信号が入力されたタイミングでレーザー光を感
光体１上の二回目の帯電部分に走査することにより静電
潜像が形成される。この時点では、現像器14のマグネッ
トローラ12に電源11からマイナスの現像バイアスが印加
されているので、静電潜像がトナー像として現像され、
続いて、極性切替スイツチ20が転写用帯電器16を電源15
の正極に接続し、感光体１との間に搬送された転写用紙
が転写用帯電器16により電圧を印加されてプラス電位に
帯電されるので、感光体１上の現像画像は転写用紙に転
写される。この動作は第７図のタイミングチヤートでは
Ｄ′の動作である。その後に転写用帯電器16がオフにな
り、印字命令が有れば第８図に示すフローチヤートにお
ける現像バイアスオンの第４ステツプに移行し、印字命
令がなければ、モータ3,10と紙送り機構のモータと露光
部８と除電ランプ17と現像バイアスと帯電用帯電器５と
がオフになる。In this embodiment, as shown in the flow chart of FIG. 8, when the power is turned on and it is confirmed that the print command is present, the motors 3 and 10 and the motor for driving the paper feed mechanism (not shown). The charge removing lamp 17, the charging charger 5, and the developing bias are maintained in the ON state, the photoconductor 1 and the magnet roller 12 rotate, and the polarity switching switch 20 causes the transfer charger 16 to be the negative electrode of the power supply 15. Connect and transfer charger 16
Is kept on for a certain period of time. These actions are the seventh
In the timing chart shown in the figure, the rotating photosensitive member 1 is charged by the negative applied voltage from both chargers 5 and 16 by the operations of A, B, D, E and F. Further, the charge eliminating lamp 17 irradiates the charged portion passing through the front surface thereof with a light beam to eliminate the charge of the first charge layer. This static elimination portion is charged a second time by the charging charger 5 when passing through the front surface of the charging charger 5. Then, power is input to the exposure unit 8 by the operation of the timing chart C in FIG. 7, and the laser beam is applied to the photosensitive member 1 at the timing when the modulation signal indicated by the pulse waveform of P 2 is input during the operation of C. An electrostatic latent image is formed by scanning the charged portion for the second time. At this time, since the negative developing bias is applied from the power source 11 to the magnet roller 12 of the developing device 14, the electrostatic latent image is developed as a toner image,
Then, the polarity switching switch 20 supplies the transfer charger 16 with the power supply 15.
Since the transfer paper connected to the positive electrode of the photoconductor and conveyed between the photoconductor and the photoconductor 1 is charged to a positive potential by applying a voltage by the transfer charger 16, the developed image on the photoconductor 1 is transferred to the transfer paper. To be done. This operation is the operation of D'in the timing chart of FIG. After that, the transfer charger 16 is turned off, and if there is a print command, the process proceeds to the fourth step of developing bias on in the flow chart shown in FIG. 8. If there is no print command, the motors 3, 10 and the paper feed The motor of the mechanism, the exposure unit 8, the charge eliminating lamp 17, the developing bias, and the charging charger 5 are turned off.
なお、本実施例においても、転写用帯電器16による感
光体１と転写用紙とに対する電圧又は電流を変えても良
いものである。Also in this embodiment, the voltage or current applied to the photoconductor 1 and the transfer sheet by the transfer charger 16 may be changed.
発明の効果 本発明は上述のように構成したので、転写動作以外の
タイミングにおいては、本来感光体上の現像画像を転写
用紙に転写する転写用帯電器を用いて感光体を帯電する
ことにより、除電前に感光体の全周を帯電する時間を半
減することができ、これにより、最初の一枚目の印字時
間を短縮することができる効果を有する。EFFECTS OF THE INVENTION Since the present invention is configured as described above, at timings other than the transfer operation, by charging the photoconductor using the transfer charger that originally transfers the developed image on the photoconductor onto the transfer paper, It is possible to halve the time for charging the entire circumference of the photoconductor before the charge removal, which has the effect of shortening the printing time of the first sheet.
第１図ないし第３図は本発明の第一の実施例を示すもの
で、第１図は側面図、第２図はタイミングチヤート、第
３図はフローチヤート、第４図は変形例を示す側面図、
第５図ないし第８図は本発明の第二の実施例を示すもの
で、第５図は転写用帯電器で感光体を帯電する状態を示
す側面図、第６図は転写用帯電器による転写状態を示す
側面図、第７図はタイミングチヤート、第８図はフロー
チヤート、第９図及び第10図は従来例を示すもので、第
９図は側面図、第10図はタイミングチヤートである。 １…感光体、５…帯電用帯電器、８…露光部、14…現像
器、16…転写用帯電器、17…除電器1 to 3 show a first embodiment of the present invention. FIG. 1 is a side view, FIG. 2 is a timing chart, FIG. 3 is a flow chart, and FIG. 4 is a modification. Side view,
FIGS. 5 to 8 show a second embodiment of the present invention. FIG. 5 is a side view showing a state in which a photoconductor is charged by a transfer charger, and FIG. 6 is a transfer charger. FIG. 7 is a side view showing a transfer state, FIG. 7 is a timing chart, FIG. 8 is a flow chart, and FIGS. 9 and 10 are conventional examples. FIG. 9 is a side view and FIG. 10 is a timing chart. is there. DESCRIPTION OF SYMBOLS 1 ... Photoconductor, 5 ... Charging charger, 8 ... Exposure part, 14 ... Developing device, 16 ... Transfer charger, 17 ... Static eliminator
Claims (4)
帯電器と露光部とトナーを使用する現像器と転写用帯電
器と除電器とを配列してなる電子写真装置において、前
記感光体を始動させると同時に前記転写用帯電器からの
印加電圧により前記感光体の外周面を帯電させ、この帯
電部分全体に前記除電器により光線を照射して除電し、
この除電部分に前記帯電用帯電器からの印加電圧により
帯電させ、この帯電部分に前記露光部よりレーザー光を
照射して静電潜像を形成し、この静電潜像を前記現像器
により現像し、前記転写用帯電器からの印加電圧により
前記感光体と前記転写用帯電器との間に搬送される転写
用紙に前記感光体上の現像画像を転写するようにしたこ
とを特徴とする電子写真装置における画像形成方法。1. An electrophotographic apparatus in which at least a charging charger, an exposing section, a developing device using toner, a transferring charger and a static eliminator are arranged along the outer periphery of the photosensitive member, wherein the photosensitive member is provided. At the same time to start the charging the outer peripheral surface of the photoconductor by the voltage applied from the transfer charger, the entire static charge portion is irradiated with light rays by the static eliminator to eliminate the charge,
The static elimination portion is charged by the voltage applied from the charging charger, and the charged portion is irradiated with laser light from the exposure portion to form an electrostatic latent image, and the electrostatic latent image is developed by the developing device. Then, the developed image on the photoconductor is transferred onto a transfer sheet conveyed between the photoconductor and the transfer charger by an applied voltage from the transfer charger. Image forming method in photographic apparatus.
体への印加電圧の極性を等しくしたことを特徴とする請
求項１記載の電子写真装置における画像形成方法。2. The image forming method in an electrophotographic apparatus according to claim 1, wherein the polarities of the voltages applied to the photoconductor by the charging charger and the transfer charger are equal.
転写用紙への印加電圧との極性を切り替えることを特徴
とする請求項１記載の電子写真装置における画像形成方
法。3. The image forming method in an electrophotographic apparatus according to claim 1, wherein the polarity of the voltage applied to the photoconductor and the voltage applied to the transfer paper by the transfer charger is switched.
光体への帯電動作時と転写用紙への帯電動作時とで変化
させることを特徴とする請求項1,2又は３記載の電子写
真装置における画像形成方法。4. The electrophotography according to claim 1, 2 or 3, wherein the voltage or current applied by the transfer charger is changed during charging of the photosensitive member and during charging of the transfer sheet. Image forming method in apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63205441A JP2534327B2 (en) | 1988-08-18 | 1988-08-18 | Image forming method in electrophotographic apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63205441A JP2534327B2 (en) | 1988-08-18 | 1988-08-18 | Image forming method in electrophotographic apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0254280A JPH0254280A (en) | 1990-02-23 |
| JP2534327B2 true JP2534327B2 (en) | 1996-09-11 |
Family
ID=16506930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63205441A Expired - Fee Related JP2534327B2 (en) | 1988-08-18 | 1988-08-18 | Image forming method in electrophotographic apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2534327B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111591169B (en) * | 2020-05-29 | 2022-11-04 | 重庆长安新能源汽车科技有限公司 | Power battery high-voltage loop, control method and electric automobile |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56155956A (en) * | 1980-05-06 | 1981-12-02 | Canon Inc | Electrophotographing method |
-
1988
- 1988-08-18 JP JP63205441A patent/JP2534327B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0254280A (en) | 1990-02-23 |
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