JPH01178991A - Electrophotographic device - Google Patents
Electrophotographic deviceInfo
- Publication number
- JPH01178991A JPH01178991A JP62334449A JP33444987A JPH01178991A JP H01178991 A JPH01178991 A JP H01178991A JP 62334449 A JP62334449 A JP 62334449A JP 33444987 A JP33444987 A JP 33444987A JP H01178991 A JPH01178991 A JP H01178991A
- Authority
- JP
- Japan
- Prior art keywords
- elastic sheet
- photoreceptor
- copy paper
- base plate
- photosensitive body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 108091008695 photoreceptors Proteins 0.000 claims description 60
- 230000000740 bleeding effect Effects 0.000 abstract description 4
- 238000011144 upstream manufacturing Methods 0.000 abstract description 3
- 230000006866 deterioration Effects 0.000 abstract description 2
- 239000002184 metal Substances 0.000 description 7
- 230000005611 electricity Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000003068 static effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 2
- 229920006267 polyester film Polymers 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 241001233037 catfish Species 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Paper Feeding For Electrophotography (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、たとえば静電転写式複写機や、静電式レーザ
ービームプリンタなどの電子写真装置に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to electrophotographic apparatus such as electrostatic transfer copying machines and electrostatic laser beam printers.
従来の技術
第２図を利用して、従来の電子写真装置の動作を説明す
る。第２図において、１は感光体で矢印２方向に回転す
る。３は現像器であり、マグロール４と攪拌部材５が装
着されている。６は現像剤である。マグロ−／Ｌ’４と
攪拌部材５は各々矢印７及び矢印８方向に回転する。９
は帯電器であり、暗中にて感光体１上へ静電気を賦与す
る。１０は光像露光であり、レンズ（図示していない）
を通した光であってもよいし、変調されたレーザー光で
あってもよい。光像１０を照射する仁と釦より、感光体
１上に静電潜像が形成される。静電潜像は、現像器３に
より可視化される。感光体１上に可視化された像は、感
光体１上の電荷と現像剤６の静電気によりクーロン力に
よって引き付けられている。BACKGROUND OF THE INVENTION The operation of a conventional electrophotographic apparatus will be explained using FIG. In FIG. 2, reference numeral 1 denotes a photoreceptor which rotates in the two directions of arrows. 3 is a developing device to which a mag roll 4 and a stirring member 5 are attached. 6 is a developer. The tuna/L'4 and stirring member 5 rotate in the directions of arrows 7 and 8, respectively. 9
is a charger that applies static electricity to the photoreceptor 1 in the dark. 10 is a light image exposure lens (not shown)
It may be light that has passed through it, or it may be modulated laser light. An electrostatic latent image is formed on the photoreceptor 1 by the button and button irradiated with the optical image 10. The electrostatic latent image is visualized by the developing device 3. The image visualized on the photoreceptor 1 is attracted by Coulomb force due to the charges on the photoreceptor 1 and the static electricity of the developer 6.
１１は用紙の送り出しローラーであり、コピー紙１２を
感光体１へ向かって送り出す役目をする。A paper feed roller 11 serves to feed the copy paper 12 toward the photoreceptor 1.
１３は案内板であり、送り出しローラー１１によって送
り出されたコピー紙１２が、感光体１にうまく接触する
ように案内ガイドの役目をする。A guide plate 13 serves as a guide so that the copy paper 12 fed out by the feed roller 11 comes into good contact with the photoreceptor 1.
１４は転写帯電器であり、感光体１上の可視像をコピー
用紙１２の上に転写をする役目をする。１６は分離帯電
器であり、コピー用紙１２と感光体１の間の静電気を中
和して、コピー用紙１２を感光体１から引き離す。１６
は搬送手段であって、コピー用紙１２を定着手段（図示
していない。）へ導く役目をする。コピー用紙１２と離
れた感光体１は清掃手段１７により、その表面をきれい
にして、除電ランプ１８により、残った静電気が除去さ
れ、次の作像プロセスを受ける。以上が電子写真装置の
動作の説明である。A transfer charger 14 serves to transfer the visible image on the photoreceptor 1 onto the copy paper 12. A separation charger 16 neutralizes static electricity between the copy paper 12 and the photoreceptor 1 and separates the copy paper 12 from the photoreceptor 1. 16
is a conveying means and serves to guide the copy paper 12 to a fixing means (not shown). The surface of the photoreceptor 1 separated from the copy paper 12 is cleaned by a cleaning means 17, and residual static electricity is removed by a discharge lamp 18, and the photoreceptor 1 is subjected to the next image forming process. The above is an explanation of the operation of the electrophotographic apparatus.
転写帯電器１４はハウジングとその中央に細い金属線よ
りなっており、中央の細い金属線に高電圧が印加される
。その時、金属線とハウジングや感光体の間で、コロナ
放電が起り、コロナ放電域にて感光体１上の現像剤６が
コピー用紙１２に転写される。現像剤の電荷をｑとし、
コロナ放電域の電場の強さをＥとするとＦ−ｑ、Ｅ と
いう力が現像剤に作用し、現像剤６がコピー用紙１２に
転写される。The transfer charger 14 consists of a housing and a thin metal wire in the center thereof, and a high voltage is applied to the thin metal wire in the center. At this time, corona discharge occurs between the metal wire and the housing or the photoreceptor, and the developer 6 on the photoreceptor 1 is transferred to the copy paper 12 in the corona discharge area. Let the charge of the developer be q,
When the strength of the electric field in the corona discharge region is E, a force F-q,E acts on the developer, and the developer 6 is transferred to the copy paper 12.
第６図は従来の転写の部分を説明したものである。１９
は転写域であり、この範囲で転写される。FIG. 6 explains the conventional transfer part. 19
is the transfer area, and the image is transferred within this range.
転写域１９では感光体１とコピー用紙１２が完全に接触
していることが重要であり、第６図のごとくすき間２ｏ
があると、力Ｆの作用を受けた現像剤６はコピー用紙１
２にきれいに転写されずに、にじんで転写される。案内
板１３は金属で構成されており、直接装置本体に接地さ
れるか、バリスタや大きな抵抗を介して接地されており
、電気が留まるのを防止している。It is important that the photoreceptor 1 and the copy paper 12 are in complete contact in the transfer area 19, with a gap of 2o as shown in FIG.
, the developer 6 subjected to the force F is transferred to the copy paper 1
2, the image is not transferred cleanly and is transferred with smudging. The guide plate 13 is made of metal and is grounded directly to the main body of the device or via a varistor or a large resistor to prevent electricity from being trapped.
前述したようにコピー用紙１２は、転写帯電器１４の転
写域１９の出来るだけ上流側で、感光体１と接触するの
が望ましい。そのためには案内板１３を出来るだけ感光
体１に近づけることが必要である。しかし、案内板１３
を感光体１に近づけすぎることは、感光体１への機械的
ダメージを与える危険性があるため、案内板１３と感光
体１はある程度の距離が必要である。As described above, it is desirable that the copy paper 12 contacts the photoreceptor 1 as far upstream as possible from the transfer area 19 of the transfer charger 14. For this purpose, it is necessary to bring the guide plate 13 as close to the photoreceptor 1 as possible. However, information board 13
If the guide plate 13 is brought too close to the photoreceptor 1, there is a risk of mechanical damage to the photoreceptor 1, so a certain distance between the guide plate 13 and the photoreceptor 1 is required.
一方、にじみのない画像を確保するため、転写帯電器１
４の開口部を狭くして転写域１ｅの巾をせまくすること
も知られているが、この場合は、金属線とせばめられた
開口部間でリークが発生する可能性がある。On the other hand, in order to ensure a blur-free image, the transfer charger 1
It is also known to narrow the width of the transfer area 1e by narrowing the opening 4, but in this case, there is a possibility that leakage may occur between the metal wire and the narrow opening.
発明が解決しようとする問題点
しかしながら上記のような構成では、転写域でコピー用
紙と感光体を密着させようとすれば、案内板を感光体に
近づける必要があるが、感光体に機械的ダメージを与え
る可能性が大きくなる。−方転写帯電器の開口部を小さ
くして、転写域でのコピー用紙と感光体の密着を確保し
ようとすれば、転写帯電器のリークが発生するという問
題点を有している。Problems to be Solved by the Invention However, with the above configuration, in order to bring the copy paper and photoreceptor into close contact in the transfer area, it is necessary to move the guide plate close to the photoreceptor, but this may cause mechanical damage to the photoreceptor. The possibility of giving increases. If an attempt is made to ensure close contact between the copy paper and the photoreceptor in the transfer area by making the opening of the transfer charger smaller, there is a problem in that leakage occurs in the transfer charger.
本発明は上記問題点に濫み、コピー用紙と感光体との転
写域での密着性を確保しながら前記欠点を取り除こうと
するものである。The present invention addresses the above-mentioned problems and attempts to eliminate the above-mentioned drawbacks while ensuring adhesion between the copy paper and the photoreceptor in the transfer area.
問題点を解決するための手段
上記問題点を解決するために本発明の電子写真装置は静
電潜像を形成することが出来る感光体と、前記感光体上
の静電潜像を電気力によって可視化することが出来る現
像器と、前記感光体へコピー用紙を送り出すだめのロー
ラーと、前記感光体へコピー用紙を導くだめの案内板と
、前記感光体上の可視化された像をコピー用紙へ転写す
るだめの転写手段とを具備し、前記案内板が、ベース板
、うすい弾性シート、厚い弾性シートのサントイ・ソチ
構造にて構成されており、感光体表面とベース板との静
止時の最近接距離をＩＢ、ｉ光体表面と、薄い弾性シー
トの静止時の最近接距離を４１．感光体表面と厚い弾性
シートの静止時の最近接距離をｅ２としだとき、ｌ！１
＞１２≧ｌＢ となるという構成を備えたものである。Means for Solving the Problems In order to solve the above problems, the electrophotographic apparatus of the present invention includes a photoreceptor capable of forming an electrostatic latent image, and an electrostatic latent image formed on the photoreceptor by electric force. A developing device that can visualize the image, a roller that sends the copy paper to the photoreceptor, a guide plate that guides the copy paper to the photoreceptor, and a transfer of the visualized image on the photoreceptor to the copy paper. The guide plate is composed of a Santoy-Sochi structure of a base plate, a thin elastic sheet, and a thick elastic sheet, and the guide plate is provided with a Santoy-Sochi structure of a base plate, a thin elastic sheet, and a thick elastic sheet, so that the surface of the photoreceptor and the base plate are closest to each other when the base plate is at rest. The distance is IB, and the closest distance between the surface of the light body and the thin elastic sheet at rest is 41. If the closest distance between the photoreceptor surface and the thick elastic sheet at rest is e2, then l! 1
>12≧lB.
作 用
本発明は上記した構成により、感光体とコピー用紙の接
触位置を転写域の上流側に設定出来るようにしており、
転写時の現像剤のにじみなどの画質劣化を防止できる。Function The present invention has the above-described configuration, so that the contact position between the photoreceptor and the copy paper can be set on the upstream side of the transfer area.
Image quality deterioration such as developer bleeding during transfer can be prevented.
実施例
以下、本発明の実施例の電子写真装置について、図面を
参照しながら説明する。Embodiments Hereinafter, electrophotographic apparatuses according to embodiments of the present invention will be described with reference to the drawings.
第１図は本発明の電子写真装置に使われる案内板である
。第２図は電子写真装置の動作説明図であり、その基本
動作については、従来例の所で説明したとおシである。FIG. 1 shows a guide plate used in the electrophotographic apparatus of the present invention. FIG. 2 is an explanatory diagram of the operation of the electrophotographic apparatus, and its basic operation has been explained in the conventional example.
第３図、第４図、第５図は転写域にコピー用紙が突入し
てぐる様子を示した説明図である。FIG. 3, FIG. 4, and FIG. 5 are explanatory diagrams showing how the copy paper enters the transfer area.
第１図において案内板１３は２１ベース板、２２薄い弾
性シート、２３厚い弾性シートで構成されている。Ａ部
ば２１と２２と２３の取付部である。In FIG. 1, the guide plate 13 is composed of a base plate 21, a thin elastic sheet 22, and a thick elastic sheet 23. Part A is the attachment part for the parts 21, 22, and 23.
ベース板２１は金属で出来ておシ、電子写真装置へ接地
されるか、または静電気が留まらないようにバリスタ等
を介して接地されている。２２は５０〜１６０μの導電
性の弾性シートであシ、導電性をほどこしたポリエステ
ルフィルムが適シている。２３は２００μ以上の厚さの
導電性の弾性シートであり、導電性をほどこしたポリエ
ステルフィルムやステンレスなどの板でアル。The base plate 21 is made of metal and is grounded to the electrophotographic device or via a varistor or the like to prevent static electricity from accumulating. 22 is a conductive elastic sheet having a thickness of 50 to 160 μm, and a conductive polyester film is suitable. 23 is a conductive elastic sheet with a thickness of 200μ or more, and is made of a conductive polyester film or a plate made of stainless steel.
第２図の説明は従来例において詳しく説明した。The explanation of FIG. 2 has been explained in detail in the conventional example.
第３図は、コピー用紙１２が案内板１３に沿って、感光
体へむかおうとしている所である。コピー用紙１２が感
光体１と接触する前の状態において、感光体１の表面と
ベース板２１の静止時の最近距離は４Ｂであり、感光体
１の表面と薄い弾性シート２２の静止時の最近接距離は
１１ であり、感光体１の表面と厚い弾性シート２３の
静止時の最近接距離は１２であり、６１＞Ｊｌ’２≧１
１Ｂなるように設定する。感光体１と薄い弾性シート２
２及び厚い弾性シート２３の間にコピー用紙１２が実質
的に存在しない時を静止時と言う。FIG. 3 shows the copy paper 12 about to move toward the photoreceptor along the guide plate 13. Before the copy paper 12 comes into contact with the photoreceptor 1, the closest distance between the surface of the photoreceptor 1 and the base plate 21 at rest is 4B, and the distance between the surface of the photoreceptor 1 and the thin elastic sheet 22 at rest is 4B. The closest distance is 11, and the closest distance between the surface of the photoreceptor 1 and the thick elastic sheet 23 when stationary is 12, and 61>Jl'2≧1.
Set it to 1B. Photoreceptor 1 and thin elastic sheet 2
2 and the thick elastic sheet 23 is called a stationary state.
ベース板２１と薄い弾性シート２２と厚い弾性シート２
３は感光体１からはなれた所すなわち第１図におけるＡ
部で取シ付けられておシ、感光体１に近い先端部では、
お互いに接着されていない。Base plate 21, thin elastic sheet 22, and thick elastic sheet 2
3 is a place away from the photoreceptor 1, that is, A in FIG.
At the tip near the photoreceptor 1,
Not glued to each other.
またベース板２１．薄い弾性シート２２．厚い弾性シー
ト２３の順にサンドイッチ構造になっている。Also, the base plate 21. Thin elastic sheet 22. It has a sandwich structure in which the thick elastic sheets 23 are arranged in this order.
従って、ローラー１１から送り出されたコピー用紙は、
まず案内板１３を構成する厚い弾性シート２３に沿って
、感光体に導かれる。Therefore, the copy paper sent out from the roller 11 is
First, it is guided to the photoreceptor along the thick elastic sheet 23 that constitutes the guide plate 13.
第４図はコピー用紙１２が感光体１に接触しはじめた状
態であり、コピー用紙１２の先端が転写域１９にまさに
入ろうとしている状態である。感光体１は矢印２方向に
回転しており、コピー用紙１２は矢印２方向て移動する
。厚い弾性シート２３の先端はコピー用紙１２の力にお
されて少し撓む。FIG. 4 shows a state in which the copy paper 12 has begun to come into contact with the photoreceptor 1, and the leading edge of the copy paper 12 is about to enter the transfer area 19. The photoreceptor 1 is rotating in the two directions of the arrow, and the copy paper 12 moves in the two directions of the arrow. The leading edge of the thick elastic sheet 23 is slightly bent by the force of the copy paper 12.
この時感光体１の表面と厚い弾性シートの動作時の最近
接距離をｅ２′とする。さらにコピー用紙１２が進んで
、薄い弾性シート２３の先端が押されて大きく撓む。こ
の時、感光体１０表面と薄い弾性シート２２の動作時の
最近接距離をｅｌ とする。At this time, the closest distance between the surface of the photoreceptor 1 and the thick elastic sheet during operation is defined as e2'. As the copy paper 12 advances further, the leading edge of the thin elastic sheet 23 is pushed and bent significantly. At this time, the closest distance between the surface of the photoreceptor 10 and the thin elastic sheet 22 during operation is defined as el.
ベース板は金属であり、Ａ３は動作時と静止時実質的に
変化はない。さらにコピー用紙１２は進んで、転写域１
９に入っていく。薄い弾性シート２２には反撥力があシ
、コピー用紙１２を感光体１に押しつけるように作用す
る。この時、厚い弾性シート２３は、コピー用紙１２全
体の重みをささえており、薄い弾性シート２２には、コ
ピー用紙１２全体の力がかからない。このとき距離につ
いて４１′〉１１，１２竺／≦マタハ１２′≧１２ノ関
係ニアル。The base plate is metal, and A3 does not change substantially when it is in operation or at rest. Further, the copy paper 12 advances and the transfer area 1
Going into 9th. The thin elastic sheet 22 has a repulsive force that acts to press the copy paper 12 against the photoreceptor 1. At this time, the thick elastic sheet 23 supports the weight of the entire copy paper 12, and the force of the entire copy paper 12 is not applied to the thin elastic sheet 22. At this time, the distance is 41'〉11,12〺/≦Mataha12'≧12.
もし厚い弾性シート２３がなければ、薄い弾性シート２
２にコピー用紙１２の全体の力がかかシ、薄い弾性シー
ト２２のみの反撥力だけでは、コピー用紙１２を感光体
１へ押しあてることが出来なくなる。If there is no thick elastic sheet 23, the thin elastic sheet 2
2, the entire force of the copy paper 12 is applied, and the copy paper 12 cannot be pressed against the photoreceptor 1 only by the repulsive force of the thin elastic sheet 22.
上記の説明のごとく、厚い弾性シート２３と薄い弾性シ
ート２２がうまく作用し、コピー用紙１２が、感光体１
に密着する。そして、コピー用紙１２は感光体１と密着
した状態で、転写域１９に入っていくことになる。As explained above, the thick elastic sheet 23 and the thin elastic sheet 22 work well, and the copy paper 12 is transferred to the photoreceptor 1.
closely adhere to. Then, the copy paper 12 enters the transfer area 19 in close contact with the photoreceptor 1.
第５図は、コピー用紙１２がさらに進んだ状態を示して
いる。転写域１９内で、コピー用紙１９は、感光体１に
完全に密着している。この状態でコピー用紙１２は、転
写域１９を通過し、作像プロセスを終了する。FIG. 5 shows a state in which the copy paper 12 has further advanced. Within the transfer area 19, the copy paper 19 is in complete contact with the photoreceptor 1. In this state, the copy paper 12 passes through the transfer area 19 and the image forming process is completed.
発明の効果
以上の説明のように、本発明は案内板にて、ベース板と
薄い弾性シートと厚い弾性シートのサンドイッチ構造を
とることにより、転写域１９内で、コピー用紙１２と、
感光体１が完全に密着するように出来、転写による乱れ
や、にじみのない美しい複写物や印刷物が得られる。Effects of the Invention As explained above, the present invention employs a guide plate having a sandwich structure of a base plate, a thin elastic sheet, and a thick elastic sheet, so that copy paper 12 can be transferred within the transfer area 19.
The photoreceptor 1 can be brought into perfect contact with the photoreceptor 1, and beautiful copies and printed matter can be obtained without any disturbances caused by transfer or bleeding.
第１図は本発明の一実施例における電子写真装置の案内
板の概略図、第２図は電子写真装置の基本動作を説明す
るだめの動作原理図、第３図〜第５図は本発明の動作説
明図、第６図は従来例の説明図である。
１・・・・・・感光体、３・・・・・・現像器、６・・
・・・・現像剤、１１・・・・・・送り出しローラー、
１２・・・・・・コピー用紙、１３・・・・・・案内板
、１４・・・・・・転写帯電器、１６・・・・・・分離
帯電器、１９・・・・・・転写域、２０・・・・・・ベ
ース板、２１・・・・・・薄い弾性シート、２２・・・
・・・厚い弾性シート、Ａ部・・・・・・取付部分、（
ＩＢ・・・・・・感光体表面とベース板の最近接距離、
ｅｌ ・・・・・・感光体表面と薄い弾性シートの静止
時の最近接距離、ｔ１２・・・・・・感光体表面と厚い
弾性シートの静止時の最近接距離、１４・・・・・・感
光体表面と薄い弾性シートの動作時の最近接距離、ｌｌ
・・・・・・感光体表面と厚い弾性シートの動作時の最
近接距ｍ。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名ｈ
−一感光体表面と厚い弾性シートの静止時の景近湊Ｍ離
ノ２−・外光体表ｆｉＪと厚い弾性シートの静止時の最
近捧距離
ＩＩ’ −外光体表面と厚い＃性シートの動ずゲ時の最
近接距譲
１ｉ−−−逃九体表面と厚い弾性シートの鯰作時の量違
漆距粧
第４図
第５図
＋？−＠写域
２ｆ）−−す５間
１６ 図FIG. 1 is a schematic diagram of a guide plate of an electrophotographic apparatus according to an embodiment of the present invention, FIG. 2 is an operational principle diagram for explaining the basic operation of the electrophotographic apparatus, and FIGS. 3 to 5 are according to the present invention. FIG. 6 is an explanatory diagram of a conventional example. 1...Photoreceptor, 3...Developer, 6...
...Developer, 11...Feeding roller,
12... Copy paper, 13... Guide plate, 14... Transfer charger, 16... Separation charger, 19... Transfer Area, 20... Base plate, 21... Thin elastic sheet, 22...
...Thick elastic sheet, part A...Mounting part, (
IB...The closest distance between the photoreceptor surface and the base plate,
el...The closest distance between the surface of the photoconductor and the thin elastic sheet when it is at rest, t12...The closest distance between the surface of the photoconductor and the thick elastic sheet when it is at rest, 14...・The closest distance during operation between the photoreceptor surface and the thin elastic sheet, ll
・・・・・・The closest distance m between the photoreceptor surface and the thick elastic sheet during operation. Name of agent: Patent attorney Toshio Nakao and 1 other person
- The closest distance II' between the surface of the photoreceptor and the thick elastic sheet at rest - The surface of the outer light body fiJ and the thick elastic sheet at rest II' - The surface of the outer light body and the thick elastic sheet Closest distance when moving and moving 1i --- Difference between the amount of lacquer on the body surface and the thick elastic sheet when making catfish Figure 4 Figure 5 +? -＠Photo area 2f)--Su5-16 Figure
Claims (1)
上の静電潜像を電気力によって可視化することが出来る
現像器と、前記感光体へコピー用紙を送り出すためのロ
ーラーと、前記感光体へコピー用紙を導くための案内板
と、前記感光体上の可視化された像をコピー用紙へ転写
するための転写帯電器とを具備し、前記案内板が、ベー
ス板と薄い弾性シートと厚い弾性シートのサンドイッチ
構造にて構成されており、感光体表面とベース板との静
止時の最近接距離をｌ＿Ｂ、感光体表面と薄い弾性シー
トとの静止時の最近接距離をｌ＿１、感光体表面と厚い
弾性シートの静止時の最近接距離をｌ＿２としたとき、
ｌ＿１＞ｌ＿２≧ｌ＿３となるようにしたことを特徴と
する電子写真装置。a photoconductor capable of forming an electrostatic latent image; a developing device capable of visualizing the electrostatic latent image on the photoconductor by electric force; a roller for feeding copy paper to the photoconductor; The guide plate includes a guide plate for guiding the copy paper to the photoreceptor, and a transfer charger for transferring the visualized image on the photoreceptor to the copy paper, and the guide plate is connected to the base plate and the thin elastic sheet. It is composed of a sandwich structure of thick elastic sheets, and the closest distance between the photoconductor surface and the base plate at rest is l_B, the closest distance between the photoconductor surface and the thin elastic sheet at rest is l_1, and the photoconductor When the closest distance between the surface and the thick elastic sheet at rest is l_2,
An electrophotographic apparatus characterized in that l_1>l_2≧l_3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62334449A JPH01178991A (en) | 1987-12-29 | 1987-12-29 | Electrophotographic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62334449A JPH01178991A (en) | 1987-12-29 | 1987-12-29 | Electrophotographic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01178991A true JPH01178991A (en) | 1989-07-17 |
Family
ID=18277511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62334449A Pending JPH01178991A (en) | 1987-12-29 | 1987-12-29 | Electrophotographic device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01178991A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0524708A (en) * | 1991-07-24 | 1993-02-02 | Mita Ind Co Ltd | Paper-sheet guide device |
| JP2008058568A (en) * | 2006-08-31 | 2008-03-13 | Kyocera Mita Corp | Image forming apparatus |
| US20100189485A1 (en) * | 2009-01-29 | 2010-07-29 | Brother Kogyo Kabushiki Kaisha | Image Forming Apparatus |
-
1987
- 1987-12-29 JP JP62334449A patent/JPH01178991A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0524708A (en) * | 1991-07-24 | 1993-02-02 | Mita Ind Co Ltd | Paper-sheet guide device |
| JP2008058568A (en) * | 2006-08-31 | 2008-03-13 | Kyocera Mita Corp | Image forming apparatus |
| US20100189485A1 (en) * | 2009-01-29 | 2010-07-29 | Brother Kogyo Kabushiki Kaisha | Image Forming Apparatus |
| US8725056B2 (en) * | 2009-01-29 | 2014-05-13 | Brother Kogyo Kabushiki Kaisha | Image forming apparatus |
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