JPH0682233B2 - Electrophotographic device - Google Patents

Electrophotographic device

Info

Publication number
JPH0682233B2
JPH0682233B2 JP60293764A JP29376485A JPH0682233B2 JP H0682233 B2 JPH0682233 B2 JP H0682233B2 JP 60293764 A JP60293764 A JP 60293764A JP 29376485 A JP29376485 A JP 29376485A JP H0682233 B2 JPH0682233 B2 JP H0682233B2
Authority
JP
Japan
Prior art keywords
transfer
photoconductor
paper
transfer paper
developing
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 - Lifetime
Application number
JP60293764A
Other languages
Japanese (ja)
Other versions
JPS62151871A (en
Inventor
嘉人 浦田
俊治 佐々木
三吉 信太
晋一 ▲高▼野
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP60293764A priority Critical patent/JPH0682233B2/en
Publication of JPS62151871A publication Critical patent/JPS62151871A/en
Publication of JPH0682233B2 publication Critical patent/JPH0682233B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Fixing For Electrophotography (AREA)
  • Paper Feeding For Electrophotography (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)

Description

【発明の詳細な説明】 産業上の利用分野 本発明は電子写真方式を用いた複写機や、光プリンター
などの電子写真装置に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrophotographic apparatus such as a copying machine using an electrophotographic method or an optical printer.

従来の技術 近年電子写真法を用いた複写機や、レーザプリンタなど
の光プリンタは、OA化の伸展により広く普及しつつあ
り、これにともない装着自体の小型化と、信頼性の向
上、さらに操作性やメンラナンスに関しても容易に出来
ることが強く望まれている。
2. Description of the Related Art In recent years, copying machines using electrophotography and optical printers such as laser printers are becoming widespread due to the expansion of OA, and along with this, downsizing of the mounting itself, improvement of reliability, and further operation. It is strongly desired that it can be easily done in terms of sex and menranance.

以下図面を参照しながら上述した従来の電子写真装置の
一例について説明する。
An example of the conventional electrophotographic apparatus described above will be described below with reference to the drawings.

第6図は従来の電子写真装置の一つであるレーザプリン
タの構造を示すものである。第6図において1は感光
体、2は帯電器、3は現像器、4は転写器、5は感光体
クリーニングブ器、6は除電器、8はレーザ露光であ
る。
FIG. 6 shows the structure of a laser printer which is one of conventional electrophotographic apparatuses. In FIG. 6, 1 is a photoconductor, 2 is a charging device, 3 is a developing device, 4 is a transfer device, 5 is a photoconductor cleaning device, 6 is a neutralizer, and 8 is laser exposure.

以上のように構成された電子写真装置について以下その
動作を説明する。
The operation of the electrophotographic apparatus configured as described above will be described below.

まず感光体1は図示する矢印の方向に回転しつつ帯電器
2により表面に電荷を与えられ、次いでレーザ露光手段
8により、電気信号に応じた露光が行なわれ静電潜像が
作成される。一方給紙カセット9から転写紙10が装置内
に供給され、転写通路12に送り込まれ、転写器4により
感光体上の現像されたトナー像が転写紙に転写される。
トナー像を転写された転写紙は転写通路13を通り、定着
器7により定着され装置外へ排出される。
First, the photoreceptor 1 is charged in the surface by the charger 2 while rotating in the direction of the arrow shown in the figure, and then the laser exposure means 8 performs exposure according to an electric signal to form an electrostatic latent image. On the other hand, the transfer paper 10 is supplied from the paper feed cassette 9 into the apparatus and fed into the transfer passage 12, and the developed toner image on the photoconductor is transferred onto the transfer paper by the transfer device 4.
The transfer paper on which the toner image has been transferred passes through the transfer passage 13, is fixed by the fixing device 7, and is discharged to the outside of the apparatus.

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、転写紙の通路が装
置の下部に設けられているため、転写通路12,13内に転
写紙が詰まった場合には、これを取り除くことが面倒で
ありかつ装置自体も複雑な構成が必要となっていた。即
ち、装置自体が大きい場合には、第6図に一点鎖線で示
すように転写器4を含む転写通路構成部品を下方に下げ
ることにより、転写通路を解放することが通常用いられ
る手段であるがこの場合にも、作業者は装置内の手を突
込む必要があり、作業が困難であるばかりか手を汚すな
どの問題点が有った。
Problems to be Solved by the Invention However, in the above-mentioned configuration, since the transfer paper passage is provided in the lower portion of the apparatus, when the transfer paper is clogged in the transfer passages 12 and 13, this is removed. This is troublesome and requires a complicated structure for the device itself. That is, when the apparatus itself is large, it is a commonly used means to lower the transfer passage by lowering the transfer passage constituent parts including the transfer device 4 as shown by the one-dot chain line in FIG. Also in this case, the operator has to put his hand in the apparatus, which is not only difficult to work but also has a problem of getting his hands dirty.

また装置が小さい場合には、第7図に示すように転写通
路を境にして、装置本体を大きく開くことが採用されて
いるが、この場合には感光体,現像器が露光器などの主
構成部分を上方に持ち上げる必要が有り、転写通路も大
きく開くことは困難で、しかも装置が複雑になるなどの
問題点を有していた。さらに定着器7は通常高温に熱し
たヒートローラとプレシャーローラで構成されるが、こ
の場合、定着器7から発生した熱は上方に伝わるため、
上部に有る露光手段に併害を与えることが多く、このた
めに特別の熱対策を必要とするなどの問題点も有してい
た。
When the apparatus is small, the main body of the apparatus is widely opened with the transfer passage as a boundary as shown in FIG. 7, but in this case, the photoconductor and the developing device are mainly used as the exposing device. There is a problem that it is necessary to lift the constituent parts upward, it is difficult to open the transfer passage largely, and the apparatus becomes complicated. Further, the fixing device 7 is usually composed of a heat roller heated to a high temperature and a pressure roller. In this case, since the heat generated from the fixing device 7 is transmitted upward,
In many cases, the exposure means on the upper side is also damaged, and there is a problem that special heat measures are required for this.

本発明は上記問題点に鑑み、紙搬送などの信頼性を高
め、かつ万一紙が般送路内に詰まった場合においても処
理が容易で、しかも定着器からの熱による併害等を予防
し、さらに装置自体を小型にし得る新規な構成を提供せ
んとするものである。
In view of the above problems, the present invention improves the reliability of paper transportation and the like, and even if the paper is jammed in the general feeding path, the processing is easy, and the damage from the heat from the fixing device is prevented. In addition, it is intended to provide a novel structure that can further reduce the size of the device itself.

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、
少なくとも感光体と、露光手段と現像手段と転写手段を
有し、上記感光体に対し上記転写手段を上方に、上記露
光手段を下方に配置せしめ、しかも上記転写手段を上方
に開放可能とならしめたものであり、さらに上記転写手
段を、転写紙を吸着せしめて、感光体の転写部に搬送し
転写するベルト手段により構成したものである。
Means for Solving the Problems In order to solve the above problems, the electrophotographic apparatus of the present invention,
At least a photoconductor, an exposure unit, a developing unit, and a transfer unit are provided, and the transfer unit is located above the photoconductor and the exposure unit is located below the photoconductor, and the transfer unit can be opened upward. Further, the above-mentioned transfer means is constituted by a belt means for adsorbing a transfer paper and carrying and transferring the transfer paper to the transfer portion of the photoconductor.

作用 本発明は上記した構成により、電子写真装置の主要構成
部である感光体部や、露光手段等を動かすことなく、転
写紙の搬送通路を開閉できるため、装置自体を小型にす
ることが可能で、かつ万一、内部に転写紙が詰まった場
合にも、簡単な作業で除去できることとなる。また本構
成により、定着器を本体の上部に構成できるため、本体
内の主要部に対する熱の影響を少なくすることが可能
で、本体主要構成部をより高密度に配置して、小型にす
ることが可能となる。
Effect of the Invention With the above-described configuration, the present invention can open and close the transfer paper transport path without moving the photoconductor section, which is a main component of the electrophotographic apparatus, the exposure unit, and the like, so that the apparatus itself can be downsized. And, even if the transfer paper gets stuck inside, it can be removed by a simple operation. Also, with this configuration, the fixing device can be configured on the upper part of the main body, so it is possible to reduce the influence of heat on the main part inside the main body, and to arrange the main body main parts in a higher density to make it smaller. Is possible.

実施例 以下本発明の一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 An electrophotographic apparatus according to an embodiment of the present invention will be described below with reference to the drawings.

第1図は本発明の一実施例における電子写真装置の側断
面を示すものである。20は感光体、21は帯電器、22は既
知の現像ロール、23はトナー、24は転写部である。転写
部は2本のロール25,26間に張架せしめられた転写ベル
ト27を有し、転写ベルト27は、ベルト帯電器28により帯
電せしめられる。32,33はレジストローラ、34は給紙カ
セット、35は給紙ローラ、36は転写紙、40はクリーニン
グブレード、42は除電器で、除電ランプ43と反射ミラー
44で構成される。65は既知のレーザ露光手段で45はポリ
ゴンミラー、46はポリゴンミラー回転用モータ、47は結
像レンズである。レーザは一点鎖線で示すように反射ミ
ラー48,49で反射されて感光体上に結像せしめられる。4
9は定着器であり、50はプレシャーローラ、52はヒート
ローラで内部に加熱用の定着ランプ51を有している。53
は排紙ローラである。
FIG. 1 is a side sectional view of an electrophotographic apparatus according to an embodiment of the present invention. Reference numeral 20 is a photoconductor, 21 is a charger, 22 is a known developing roll, 23 is toner, and 24 is a transfer section. The transfer section has a transfer belt 27 stretched between two rolls 25 and 26, and the transfer belt 27 is charged by a belt charger 28. 32 and 33 are registration rollers, 34 is a paper feed cassette, 35 is a paper feed roller, 36 is a transfer paper, 40 is a cleaning blade, 42 is a static eliminator, a static erasing lamp 43 and a reflection mirror.
It consists of 44. Reference numeral 65 is a known laser exposure means, 45 is a polygon mirror, 46 is a polygon mirror rotation motor, and 47 is an imaging lens. The laser is reflected by the reflection mirrors 48 and 49 as shown by the one-dot chain line and is focused on the photoconductor. Four
9 is a fixing device, 50 is a pressure roller, and 52 is a heat roller, which has a fixing lamp 51 for heating therein. 53
Is a discharge roller.

以上のように構成された電子写真装置について、以下第
1図,第2図を用いてその動作を説明する。第1図にお
いて感光体20,定着器ローラ50,52、転写ベルト27が矢印
の方向に各々回転する。転写ベルト27は転写部62におい
て感光体と接触し、感光体と略同スピードで動作してい
る。
The operation of the electrophotographic apparatus configured as described above will be described below with reference to FIGS. 1 and 2. In FIG. 1, the photoconductor 20, the fixing device rollers 50 and 52, and the transfer belt 27 rotate in the directions of the arrows. The transfer belt 27 comes into contact with the photoconductor at the transfer portion 62 and operates at substantially the same speed as the photoconductor.

先ず感光体20の表面に帯電器21によって、電荷が与えら
れる。次にレーザ光66により、露光される。このときレ
ーザ光66は既知の手段である多面鏡モータ46によって回
転せしめられている多面鏡45により感光体20の巾方向に
高速で走査(主走査)せしめられており、かつレーザ光
は画像信号に応じて変調せしめられているので感光体の
回転(副走査)と相まって所要の画像信号に応じた露光
がなされ、感光体表面には画像信号に応じた電荷潜像が
形成される。感光体20の回転により、上記電荷潜像は現
像部67において現像され、感光体表面にはトナー像が作
成される。一方転写紙36は給紙ローラ35により装置内に
供給され、停止しているレジストローラ32,33に押しつ
けられ待機する。第2図に示すように、レジストローラ
32,33が回転を始めると転写紙36aは転写ベルトローラ26
と31の間に供給される、このとき転写ベルト27は帯電器
28により帯電せしめられているので転写紙36aは図示す
るようにベルト27に吸着せしめられて搬送され、36bに
示す如く、転写部62に於いて感光体上のトナー23aが転
写紙上に転写される。
First, an electric charge is applied to the surface of the photoconductor 20 by the charger 21. Then, the laser beam 66 is used for exposure. At this time, the laser beam 66 is swept (main scanning) at high speed in the width direction of the photoconductor 20 by the polygon mirror 45 rotated by the polygon mirror motor 46 which is a known means, and the laser beam is an image signal. Therefore, exposure is performed according to a required image signal in combination with rotation (sub-scanning) of the photoconductor, and a charge latent image according to the image signal is formed on the photoconductor surface. As the photoconductor 20 rotates, the charge latent image is developed in the developing section 67, and a toner image is formed on the photoconductor surface. On the other hand, the transfer paper 36 is supplied into the apparatus by the paper feed roller 35 and is pressed against the stopped registration rollers 32 and 33 to stand by. As shown in FIG. 2, the registration roller
When 32 and 33 start to rotate, the transfer paper 36a is transferred to the transfer belt roller 26.
And 31 are supplied between the transfer belt 27 and the charging device.
Since the transfer paper 36a is charged by 28, the transfer paper 36a is attracted to the belt 27 and conveyed as shown in the drawing, and the toner 23a on the photoconductor is transferred onto the transfer paper at the transfer portion 62 as shown in 36b. .

さらに転写紙が送られると、ベルトローラ25部において
転写紙の剛性により、転写紙はベルトから剥離しガイド
板54を経て、定着部に突入し、定着された後機外へ排出
される(36c)。感光体上に残留したトナー23bはクリー
ニングブレード40によってクリーニングされる。さらに
感光体20は除電部42に於いて除電ランプ43によって除電
され1サイクルを終了し、再び帯電されて次のサイクル
に入る。第3図は第1の実施例において、転写紙搬送路
において転写紙が詰まった場合に、搬送路を開放する方
法の一実施例を示す図である。
When the transfer paper is further fed, due to the rigidity of the transfer paper at the belt roller 25, the transfer paper is separated from the belt, enters the fixing unit through the guide plate 54, is fixed, and is discharged outside the machine (36c ). The toner 23b remaining on the photoconductor is cleaned by the cleaning blade 40. Further, the photoconductor 20 is decharged by the decharging lamp 43 in the decharging section 42 to end one cycle, and is charged again to start the next cycle. FIG. 3 is a diagram showing an embodiment of a method of opening the transfer path when the transfer paper is jammed in the transfer paper transfer path in the first embodiment.

即ち転写手段を支持する転写部フレーム29を軸66を中心
に上方に回動せしめれば、紙搬送路は大きく開放され、
内部に詰まった紙を極めて容易に取り除くことができる
ことは明らかである。この場合、複写機の主要構成部で
ある感光体,現像部,や露光部,定着部等は本体側に固
定されているので、動かす必要がない。
That is, by rotating the transfer part frame 29 supporting the transfer means upward about the shaft 66, the paper conveyance path is largely opened,
It is clear that the jammed paper can be removed very easily. In this case, it is not necessary to move the photoconductor, the developing unit, the exposing unit, the fixing unit, etc., which are the main components of the copying machine, because they are fixed to the main body.

また定着部は装置の上方に有るので、発生する熱により
他の構成部に外を及ぼすことが少ない。また本実施例で
露光手段はレーザで走査する手段を用いたが、複写機の
ように原稿の像を写真的に感光体上に結像する複写光学
系の場合においても同様に構成できる。
Further, since the fixing unit is located above the device, the generated heat rarely affects the other components. Further, in the present embodiment, the exposure means is a means for scanning with a laser, but it can be similarly constructed in the case of a copying optical system such as a copying machine which photographically forms an image of an original on a photoconductor.

発明の効果 以上のように本発明は感光体に対し転写部と転写紙通路
を上方に設け、露光手段を下方に設けたため、転写部
や、紙搬送路の開閉が容易であり、しかも装置の主構成
要素である感光体,現像器,露光手段等を動かす必要が
無いため、装置自体を小型に出来、しかも操作性,メン
テナンス性にすぐれた装置を提供するものである。
As described above, according to the present invention, since the transfer section and the transfer paper path are provided above the photoconductor and the exposure means is provided below the photoconductor, the transfer section and the paper transport path can be easily opened and closed, and the apparatus Since it is not necessary to move the main components such as the photoconductor, the developing device, the exposing means, etc., the device itself can be downsized, and the device is excellent in operability and maintainability.

また上記構成とすることにより、高温を必要とする定着
器を本体上方に配置することが可能となり、全体構成を
簡単にすることができる。
Further, with the above configuration, the fixing device that requires high temperature can be arranged above the main body, and the overall configuration can be simplified.

また転写部への転写紙搬送、転写、転写部から定着器へ
の転写紙搬送を一体のベルトで構成しこのベルトに転写
紙を吸着せしめる構成とすることにより、より信頼性の
高い装置を構成することができるものである。
In addition, a more reliable device is configured by configuring the transfer paper transfer to the transfer unit, transfer, and transfer paper transfer from the transfer unit to the fixing unit with an integrated belt, and the transfer paper being attracted to this belt. Is what you can do.

【図面の簡単な説明】[Brief description of drawings]

第1図は本発明の第1の実施例における側面図、第2図
は第1図の動作を示す側面図、第3図は第1の実施例に
おける本体開閉の例を示す側面図、第4図は、第2図の
実施例における側面図、第5図はその斜視図、第6図は
従来の複写機の側面図、第7図は従来の複写機の本体開
閉の例を示す側面図である。 20……感光体、21……帯電部、24……転写部、34……給
紙カセット、41……クリーニング部、42……除電部、49
……定着部、65……露光部、67……現像部。
FIG. 1 is a side view of the first embodiment of the present invention, FIG. 2 is a side view showing the operation of FIG. 1, and FIG. 3 is a side view showing an example of opening and closing the main body in the first embodiment. FIG. 4 is a side view of the embodiment of FIG. 2, FIG. 5 is a perspective view thereof, FIG. 6 is a side view of a conventional copying machine, and FIG. 7 is a side view showing an example of opening and closing the body of the conventional copying machine. It is a figure. 20 …… photoreceptor, 21 …… charging section, 24 …… transfer section, 34 …… paper feed cassette, 41 …… cleaning section, 42 …… static elimination section, 49
…… Fixing unit, 65 …… Exposure unit, 67 …… Developing unit.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 ▲高▼野 晋一 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (56)参考文献 特開 昭58−198060(JP,A) 特開 昭54−55443(JP,A) 実開 昭6−173946(JP,U) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor ▲ Taka ▼ Shinichi Nono 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) Reference JP-A-58-198060 (JP, A) JP-A-SHO 54-55443 (JP, A) Actually opened 6-173946 (JP, U)

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】少なくとも感光体と、上記感光体を露光せ
しめ静電潜像を作成するための露光手段と、上記静電潜
像を現像せしめて、上記感光体上にトナー像を作成する
ための現像手段と、転写紙を吸着せしめて上記感光体の
転写部に搬送し上記感光体上のトナー像を上記転写紙に
転写せしめ、さらに上記転写紙を定着手段まで搬送する
一体のベルト転写手段を有し、上記感光体に対し上記転
写手段を上方に、上記露光手段を下方に配し、上記転写
手段を転写紙の通路に沿って本体に対し開閉自在と成す
ことを特徴とする電子写真装置。
1. At least a photosensitive member, an exposing unit for exposing the photosensitive member to form an electrostatic latent image, and developing the electrostatic latent image to form a toner image on the photosensitive member. Developing means and an integral belt transfer means for adsorbing the transfer paper and conveying it to the transfer portion of the photoconductor to transfer the toner image on the photoconductor to the transfer paper, and further conveying the transfer paper to the fixing means. The electrophotographic apparatus having the above-mentioned means, wherein the transfer means is arranged above the photoconductor and the exposure means is arranged below the photoconductor, and the transfer means can be freely opened and closed with respect to the main body along the path of the transfer paper. apparatus.
JP60293764A 1985-12-26 1985-12-26 Electrophotographic device Expired - Lifetime JPH0682233B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60293764A JPH0682233B2 (en) 1985-12-26 1985-12-26 Electrophotographic device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60293764A JPH0682233B2 (en) 1985-12-26 1985-12-26 Electrophotographic device

Publications (2)

Publication Number Publication Date
JPS62151871A JPS62151871A (en) 1987-07-06
JPH0682233B2 true JPH0682233B2 (en) 1994-10-19

Family

ID=17798911

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60293764A Expired - Lifetime JPH0682233B2 (en) 1985-12-26 1985-12-26 Electrophotographic device

Country Status (1)

Country Link
JP (1) JPH0682233B2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4841334A (en) * 1987-07-28 1989-06-20 Kentek Information Systems, Inc. Electrographic printer with small diameter drum and charged transfer belt
US5045892A (en) * 1987-09-30 1991-09-03 Asahi Kogaku Kogyo Kabushiki Kaisha Recording paper transport mechanism
JP2665753B2 (en) * 1987-12-21 1997-10-22 オリンパス光学工業株式会社 Image recording device
CA1327831C (en) * 1988-05-25 1994-03-15 Shigeki Sakakura Image-forming apparatus
JPH01297690A (en) * 1988-05-26 1989-11-30 Fujitsu Ltd Face down type electrostatic recorder
JPH0236836U (en) * 1988-08-31 1990-03-09
US4945364A (en) * 1988-09-07 1990-07-31 Seiko Epson Corporation Page printer
JPH07301966A (en) * 1994-04-30 1995-11-14 Nec Corp Electrophotographic printing device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5455443A (en) * 1977-10-12 1979-05-02 Ricoh Co Ltd Developing device
JPS58198060A (en) * 1982-05-14 1983-11-17 Hitachi Ltd Recording device
JPS61173946U (en) * 1985-04-15 1986-10-29

Also Published As

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