JPS6340182A - Electrophotographic device - Google Patents

Abstract

PURPOSE:To record an image onto the whole surface of recording paper by forming a photosensitive body on the surface of a separating belt in a recording paper carrying system. CONSTITUTION:A drum 1 rotates in the direction as indicated with an arrow A, and by following it, a separating belt 2 runs circularly against a roller 3. When an optical image is made incident on the drum 1 and the separating belt 2 between an electrifying corotron 4 and a developing device 5, an electrostatic latent image is formed on the photosensitive body of the drum 1 and the separating belt 2, and transferred onto recording paper 9 after a development by a toner in the same way as the case of a conventional device. In such a case, the electrostatic latent image is formed on the photosensitive body of the separating belt 2, as well, therefore, the toner development is transferred to a part contacting the separating belt 2 of the recording paper 9, as well. The transfer paper 9 is drawn into the separating belt 2, and separated and discharged from the drum 1 as indicated with an arrow B.

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関し、特に記録紙搬送系に分離
ベルトを用いた電子写真装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electrophotographic apparatus, and more particularly to an electrophotographic apparatus using a separation belt in a recording paper conveyance system.

〔従来の技術〕[Conventional technology]

従来の電子写真装置において記録紙搬送系に設けである
分離ベルトは、例えば感光ドラムの端部の外周面に接す
るよう位置決めして、装置筐体に固定しである。動作時
には、紙面の端辺部を感光ドラムに接することなしに記
録紙を搬送し、転写済みの記録紙を感光ドラムから分離
し排出させる。In a conventional electrophotographic apparatus, a separation belt provided in a recording paper conveyance system is positioned, for example, in contact with the outer circumferential surface of an end of a photosensitive drum, and is fixed to the apparatus housing. During operation, the recording paper is conveyed without the edge portion of the paper surface coming into contact with the photosensitive drum, and the recording paper on which transfer has been completed is separated from the photosensitive drum and discharged.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

上述した従来の電子写真装置では、記録紙搬送系の分離
ベルトが感光ドラムと記録紙との間に介在し両者を分離
するように、記録紙を搬送させる。In the conventional electrophotographic apparatus described above, the separation belt of the recording paper conveyance system is interposed between the photosensitive drum and the recording paper, and the recording paper is conveyed so as to separate the two.

従って、記録紙が分離ベルトと接触している部分には画
像を記録できないという欠点がある。Therefore, there is a drawback that an image cannot be recorded on the portion where the recording paper is in contact with the separation belt.

本発明の目的は、上述の欠点を除去し分離ベルトに接触
している部分の記録紙上にも画像を記録できるようにし
た電子写真装置を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide an electrophotographic apparatus that eliminates the above-mentioned drawbacks and is capable of recording images even on the portion of the recording paper that is in contact with the separation belt.

〔問題点を解決するための手段〕[Means for solving problems]

本発明の装置は、表面に感光体をもつドラムと、該ドラ
ムの端部外周に接する箇所で記録紙を前記ドラムから分
離し排出させるための分離ベルトとを有する電子写真装
置において、前記分離ベルトは、前記）−ラムの端部外
周およびその外方に設けたローラーの間に掛けて巡回走
行可能に装着してあり、且つ表面に感光体を形成しであ
る。The apparatus of the present invention is an electrophotographic apparatus that includes a drum having a photoreceptor on its surface, and a separation belt for separating and ejecting recording paper from the drum at a location in contact with the outer periphery of an end of the drum. The photoreceptor is mounted between the outer periphery of the end of the ram and rollers provided outside the ram so as to be able to travel around, and has a photoreceptor formed on its surface.

〔実施例〕〔Example〕

次に、本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.

第１図は、本発明の一実施例を示す斜視図である。FIG. 1 is a perspective view showing an embodiment of the present invention.

電子写真装置の分離ベルト２の表面には光導電体の膜か
ら成る感光体を形成してあり、感光用のドラム１の端部
の外周面とローラー３との間に分離ベルト２を掛けであ
る。分離ベルト２がドラム１に接する箇所では、ドラム
１および分離ベルト２の各感光体表面の高さか揃うよう
にしである。A photoreceptor made of a photoconductor film is formed on the surface of the separation belt 2 of the electrophotographic apparatus, and the separation belt 2 can be hung between the outer peripheral surface of the end of the photosensitive drum 1 and the roller 3. be. At the location where the separation belt 2 contacts the drum 1, the heights of the surfaces of the photoreceptors on the drum 1 and the separation belt 2 are made to be the same.

第２図は本実施例での現像プロセスを説明するための側
面図である。同図に示すごとく、帯電コロトロン４、ト
ナー現像を行なう現像器５、トナー現像を記録紙９上に
転写させる転写コロトロン６、トナー落し用のクリーナ
７、および潜像消去用のイレーザ８の各箇所は、ドラム
１と分離ベルト２とが接している位置に設定しである。FIG. 2 is a side view for explaining the developing process in this embodiment. As shown in the figure, each location includes a charging corotron 4, a developer 5 for toner development, a transfer corotron 6 for transferring the toner development onto the recording paper 9, a cleaner 7 for removing toner, and an eraser 8 for erasing latent images. is set at a position where the drum 1 and the separation belt 2 are in contact with each other.

動作時には、ドラム１が矢印Ａの向きに回転し、これに
伴って分離ベルト２はローラー３との間で巡回走行する
。帯電コロトロン４と現像器５との間のドラム１および
分離ベルト２上に光像を入射させれば、ドラム１および
分離ベルト２の感光体上に静電潜像が形成され、従来装
置の場合と同様に、トナー現像したあと記録紙９上に転
写される。本実施例では、分離ベルト２の感光体上にも
静電潜像が形成されるから、記録紙９の分離ベルト２に
接触している部分にもトナー現１象が転写される。転写
紙９は、分離ベルト２に引込まれて、矢印Ｂで示すよう
にドラム１から分離され排出される。During operation, the drum 1 rotates in the direction of arrow A, and the separation belt 2 circulates between it and the rollers 3. When a light image is incident on the drum 1 and separation belt 2 between the charging corotron 4 and the developing device 5, an electrostatic latent image is formed on the photoreceptor of the drum 1 and separation belt 2, unlike in the case of the conventional device. Similarly, after the toner is developed, it is transferred onto the recording paper 9. In this embodiment, since an electrostatic latent image is also formed on the photoreceptor of the separation belt 2, the toner phenomenon is also transferred to the portion of the recording paper 9 that is in contact with the separation belt 2. The transfer paper 9 is drawn into the separation belt 2, separated from the drum 1 as shown by arrow B, and discharged.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明は、記録紙搬送系における分
離ベルトの表面上に感光体を形成しておくことにより、
記録紙全面に画像を記録することができるという効果が
ある。As explained above, the present invention has the advantage of forming a photoreceptor on the surface of the separation belt in the recording paper conveyance system.
This has the effect that an image can be recorded on the entire surface of the recording paper.

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

第１図および第２図はそれぞれ本発明の実施例を示す斜
視図および側面図である。 １・・・感光体ドラム、２・・・分離ベルト、３・・・
ローラー、４・・・帯電コロトロン、５・・・現像器、
６・・・転写コロトロン、７・・・クリーナ、８・・・
イレーザ−１９・・・記録紙。 第１図 躬　Ｚ図1 and 2 are a perspective view and a side view, respectively, showing an embodiment of the present invention. 1... Photosensitive drum, 2... Separation belt, 3...
Roller, 4...Charging corotron, 5...Developer,
6...Transfer corotron, 7...Cleaner, 8...
Eraser-19...Recording paper. Figure 1 Z diagram

Claims (1)

【特許請求の範囲】 表面に感光体をもつドラムと、該ドラムの端部外周に接
する箇所で記録紙を前記ドラムから分離し排出させるた
めの分離ベルトとを有する電子写真装置において、 前記分離ベルトは、前記ドラムの端部外周およびその外
方に設けたローラーの間に掛けて巡回走行可能に装着し
てあり、且つ表面に感光体を形成してあることを特徴と
する電子写真装置。[Scope of Claims] An electrophotographic apparatus comprising: a drum having a photoreceptor on its surface; and a separation belt for separating and ejecting recording paper from the drum at a point in contact with an outer periphery of an end of the drum, comprising: the separation belt; An electrophotographic apparatus, characterized in that the drum is mounted so as to be movable around the outer periphery of the end of the drum and between rollers provided outside the drum, and a photoreceptor is formed on the surface of the drum.