JPH0470825A - Form separating device - Google Patents

Abstract

PURPOSE:To improve the separating performance by providing weirs which are nearly equal in height to conveyor belts on the outer peripheral surface of a document suction duct between the conveyor belts. CONSTITUTION:The form separating device is provided with the weirs 11 which are nearly equal in height to the conveyor belts 6 at upstream side positions of the outer peripheral surface of the document suction duct 1 between the conveyor belts 6 in the conveyance direction of suction holes 3. In this case, the surfaces of the weirs 11 which face the suction holes 3 are preferably concave arcuate surfaces. Those weirs are provided to fill gaps formed among a document, the conveyor belts 6, and the outer peripheral surface of the document suction duct 1 where the suction holes 3 are formed and generated suctional negative pressure is prevented from leaking to obtain higher suctional force. Consequently, when the document 22 and photosensitive paper 21 which are sent out once over the other right after printing exposure are supplied to nearby the entrance of the separation part, the document is conveyed on the conveyor belts 6 and weirs 11 which are nearly equal in height in contact and once the document is conveyed beyond the weirs 11, the document is sucked with the high suctional force without any leak and securely separated.

Description

【発明の詳細な説明】 −上の この発明は、ジアゾ複写機等に設置され負圧を用いて原
稿と感光紙を分離する用紙分離装置に関するものである
。DETAILED DESCRIPTION OF THE INVENTION - The above invention relates to a paper separating device installed in a diazo copying machine or the like, which separates an original from a photosensitive paper using negative pressure.

′　　　の　　′　　　　の 従来、この種の用紙分離装置として、例えばこの出願人
によって提案された実開昭５７３０７３９号公報に開示
のものが知られている。Conventionally, as a sheet separating device of this type, there is known, for example, the one disclosed in Japanese Unexamined Utility Model Publication No. 5730739 proposed by the present applicant.

しかし、この装置は原稿吸引ダクトの外周における吸引
穴と吸引穴間に複数の搬送ベルトがそれぞれ回転可能に
巻き掛けられ、分離時に第８，９図に示すように搬送ベ
ルトで送られる原稿２２ａと、搬送ベルト６ａ、および
吸引穴３ａのある原稿吸引ダクト１ａの外周面間に隙間
２５ａが形成されるため、この隙間２５ａから矢印Ａで
示すように吸引負圧のもれが生じて所望の吸引力が得ら
れず、分離がうまくいかないといった問題点があった。However, in this device, a plurality of conveyor belts are rotatably wound between the suction holes on the outer periphery of the document suction duct, and when the document is separated, the document 22a is sent by the conveyor belts as shown in FIGS. , the conveyor belt 6a, and the outer circumferential surface of the document suction duct 1a where the suction hole 3a is located, a gap 25a is formed between the document suction duct 1a and the suction hole 3a. There were problems such as not being able to obtain enough force and not being able to separate properly.

そこでこの発明は、前記のような従来の問題点を解決し
、吸引負圧のもれを防止できて高い吸引負圧が得られ、
分離性能の向とを図ることができる用紙分離装置を提供
することを目的とする。Therefore, this invention solves the conventional problems as described above, prevents leakage of suction negative pressure, and obtains high suction negative pressure.
It is an object of the present invention to provide a paper separation device that can improve separation performance.

るための 前記目的を達成するため、この発明の用紙分離装置は、
搬送ベルト間の原稿吸引ダクトの外周面であって吸引穴
の搬送方向上流側位置に、該搬送ベルトとほぼ同一の高
さの堰を設けている。In order to achieve the above object, the paper separating device of the present invention includes:
A weir having approximately the same height as the conveyance belt is provided on the outer peripheral surface of the document suction duct between the conveyance belts at a position on the upstream side of the suction hole in the conveyance direction.

この場合に、堰の吸引穴を向いた面を凹状の円弧面とす
るのが好ましい。In this case, it is preferable that the surface of the weir facing the suction hole be a concave arcuate surface.

止−−１ 前記のような堰を設けることにより、原稿と、搬送ベル
ト、および吸引穴のある原稿吸引ダクトの外周面間に形
成される隙間が埋められ、発生した吸引負圧がもれるの
が防止され、より高い吸引力が得られることとなる。Stop - 1 By providing the above-mentioned weir, the gap formed between the document, the conveyor belt, and the outer circumferential surface of the document suction duct with suction holes is filled, and the generated negative suction pressure is prevented from leaking. is prevented, and higher suction power can be obtained.

そのため、焼付は露光後に送出される重合した原稿およ
び感光紙が分離部の入口付近に供給されると、原稿はほ
ぼ同一の高さとなった搬送ベルトと堰のとをこれらに密
着するように搬送され、堰を越えると同時にもれのない
前記高い吸引力によって吸引され、確実に分離される。Therefore, in printing, when the superimposed original and photosensitive paper sent out after exposure are fed near the entrance of the separating section, the original is conveyed through the conveyor belt and the weir, which are at almost the same height, in close contact with them. As soon as it crosses the weir, it is sucked in by the high suction force without any leakage, and is reliably separated.

スー宛−汎 第１図はこの発明の一実施例を示す概略断面図、第２図
は原稿吸引ダクト側をみた斜視図である。FIG. 1 is a schematic sectional view showing an embodiment of the present invention, and FIG. 2 is a perspective view of the document suction duct.

両図においてｌは原稿吸引ダクト、２は感光紙吸引ダク
トであり、それぞれ対向する面が湾曲状に形成されて、
所定間隔をおいて相対向配置されている。両ダクト１，
２の相対向する面には吸引穴３，４がそれぞれ長さ方向
に複数穿設され、両穴３．４付近が分離部５となってい
る。原稿吸引ダクト１の外周には無端状の原稿搬送ベル
ト６が該ダクト１の長さ方向に複数、感光紙吸引ダクト
２との対向面およびこれと一体に湾曲状に上下に延びる
ガイド板７に摺接し、それぞれ軸支された駆動ローラ８
と従動ローラ９に回転可能に巻き掛けられている。In both figures, 1 is a document suction duct, 2 is a photosensitive paper suction duct, and their opposing surfaces are curved.
They are arranged facing each other at a predetermined interval. Both ducts 1,
A plurality of suction holes 3 and 4 are formed in the longitudinal direction on opposing surfaces of the two, and the vicinity of both holes 3 and 4 serves as a separation section 5. A plurality of endless document conveyance belts 6 are provided on the outer periphery of the document suction duct 1 in the length direction of the duct 1, on a surface facing the photosensitive paper suction duct 2, and on a guide plate 7 that extends vertically in a curved manner integrally with the document suction duct 1. Drive rollers 8 that are in sliding contact and each supported by a shaft
and is rotatably wound around the driven roller 9.

搬送ベルト６間の原稿吸引ダクト１の外周面であって吸
引穴３の搬送方向上流側位置には、第３．４図に拡大し
て示すように搬送ベルト６とほぼ同一の高さの方形の堰
１１が設けられている。堰１１を設けるに際しては、堰
１１を別体として製作したうえで、ダクト１の外周面に
固定してもよいし、ダクト１と一体に製作してもよい。On the outer circumferential surface of the document suction duct 1 between the transport belts 6, at a position on the upstream side of the suction hole 3 in the transport direction, there is a rectangular shape having approximately the same height as the transport belt 6, as shown in an enlarged view in FIG. 3.4. A weir 11 is provided. When providing the weir 11, the weir 11 may be manufactured separately and then fixed to the outer peripheral surface of the duct 1, or it may be manufactured integrally with the duct 1.

１３は感光紙吸引ダクト２の下方に延びたガイド板１４
に搬送ベルト６と対向して形成された開孔、１５は開孔
１３から搬送ベルト６側へ突圧して回転可能に設けられ
た送りころで１弾性変形自在の材料からなっている６ 第５．６図は堰の別の変形例を示し、第５図の堰Ｉ７は
吸引穴３側を向いた面が凹状の円弧面１８に形成されて
いる。第６図の堰１９はさらに堰そのものが円弧突条に
形成されている。13 is a guide plate 14 extending below the photosensitive paper suction duct 2
Apertures 15 formed opposite to the conveyor belt 6 are feed rollers that are rotatably provided to press from the apertures 13 toward the conveyor belt 6. The rollers 15 are made of an elastically deformable material. 6 shows another modification of the weir, and the weir I7 in FIG. 5 has a surface facing the suction hole 3 formed into a concave arcuate surface 18. The weir 19 shown in FIG. 6 is further formed into a circular arc ridge.

このように堰１７．１９の吸引穴３側を向いた面を凹状
の円弧面とすると、原稿を吸引穴３のある原稿吸引ダク
ト１の外周面へ導き易くなる。When the surfaces of the weirs 17 and 19 facing the suction hole 3 are made into concave arcuate surfaces in this way, it becomes easier to guide the document to the outer peripheral surface of the document suction duct 1 where the suction hole 3 is located.

第７図は感光紙２１と重合して送出される原稿２２の先
端部が分離部５の入口付近に供給され、搬送されている
状態を示している。この状態では原稿２２はほぼ同一の
高さとなった搬送ベルト６と堰１１のとをこれらに密着
するように搬送される。そのため、第３．４図に示すよ
うに従来の第８．９図のような隙間２５ａからの吸引負
圧のもれが生じることがなく、原稿２２は堰１１を越え
ると同時に矢印Ｂで示すようにもれのない高い吸引力に
よって吸引され、確実に分離される。FIG. 7 shows a state in which the leading edge of the document 22, which overlaps the photosensitive paper 21 and is sent out, is supplied to the vicinity of the entrance of the separating section 5 and is being conveyed. In this state, the document 22 is conveyed so as to be in close contact with the conveyor belt 6 and the weir 11, which are at approximately the same height. Therefore, as shown in Fig. 3.4, there is no leakage of suction negative pressure from the gap 25a as in the conventional case shown in Fig. 8.9, and the document 22 crosses the weir 11 as indicated by arrow B. It is suctioned with high suction power without leaking, and separation is ensured.

尚、前記で示した各種の堰１１．１７．１９はそれぞれ
一例を挙げたにすぎず、これ以外の設計例を排除するも
のではない。The various types of weirs 11, 17, and 19 shown above are merely examples, and other design examples are not excluded.

１里五漿呈 請求項１の発明は前記のような堰を設けた４゜ ことにより、原稿を高い吸引力で吸引して確実に分離す
ることができ、分離性能の向とを図ることができる。し
かも、従来のものに簡単な改良を施すことにより、容易
に製作することができる。請求項２の発明は前記効果に
加えて、さらに堰の吸引大側を向いた面が凹状の円弧面
となっていることにより、原稿を吸引穴のある原稿吸引
ダクトの外周面に導き易くなるので、さらに分離性能が
向上する。The invention of claim 1 has the above-mentioned weir, which makes it possible to suction the document with high suction force and reliably separate it, thereby improving the separation performance. can. Moreover, it can be easily manufactured by making simple improvements to the conventional one. In addition to the above-mentioned effects, the invention of claim 2 further provides that the surface of the weir facing the larger suction side is a concave arcuate surface, thereby making it easier to guide the original to the outer peripheral surface of the original suction duct having the suction hole. Therefore, the separation performance is further improved.

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

第１図はこの発明の一実施例を示す概略断面図、第２図
は原稿吸引ダクト側をみた斜視図、第３図は要部の正面
図、第４図は第３図の■−■線に沿う断面図、第５図お
よび第６図はそれぞれ堰の変形例を示す第３図と対応す
る正面図、第７図は作用説明用の斜視図、第８図は従来
例を示す第３図と対応する正面図、第９図は第８図の■
〜■線に沿う断面図である。 ３．４・・・吸引穴 ・分離部 ６・・・搬送ヘルド ＋１，１７．１９・・堰 １８・・円弧面 ２Ｉ・・感光紙　２２ 原稿 株式会社 ヒニニニ ト・・原稿吸引ダクト　２・・・感光紙吸引ダクト篤１
同 篤３図 尾４ノ 篤５図 篤６区Fig. 1 is a schematic cross-sectional view showing one embodiment of the present invention, Fig. 2 is a perspective view looking at the document suction duct side, Fig. 3 is a front view of the main part, and Fig. 4 is a - - - - of Fig. 3. 5 and 6 are front views corresponding to FIG. 3 showing a modified example of the weir, FIG. 7 is a perspective view for explaining the operation, and FIG. 8 is a conventional example. Front view corresponding to Figure 3, Figure 9 is the same as ■ in Figure 8.
It is a cross-sectional view along line ~■. 3.4...Suction hole/separation part 6...Transport heald +1, 17.19...Weir 18...Circular surface 2I...Photosensitive paper 22 Manuscript Hinininito Co., Ltd....Document suction duct 2...Photosensitive Paper suction duct Atsushi 1
Same Atsushi 3 Figure O 4 No Atsushi 5 Figure Atsushi 6 Ward

Claims (1)

【特許請求の範囲】 １、相対向する面にそれぞれ複数の吸引穴を有する１対
の原稿吸引ダクトおよび感光紙吸引ダクトと、この原稿
吸引ダクトの外周における吸引穴と吸引穴間にそれぞれ
回転可能に巻き掛けられた複数の搬送ベルトと、前記両
ダクトの開口部に接続された負圧発生手段とを具え、焼
付け露光後に送出される重合した原稿および感光紙を前
記両ダクト間の分離部へ供給して、該両ダクトの吸引穴
付近に発生する空気の負圧により分離するジアゾ複写機
等の用紙分離装置において、 前記搬送ベルト間の原稿吸引ダクトの外周面であつて前
記吸引穴の搬送方向上流側位置に、該搬送ベルトとほぼ
同一の高さの堰を設けたことを特徴とする用紙分離補助
装置。 ２、前記堰の吸引穴を向いた面が凹状の円弧面となって
いる請求項１記載の用紙分離装置。[Claims] 1. A pair of document suction ducts and photosensitive paper suction ducts each having a plurality of suction holes on opposing surfaces, each rotatable between the suction holes and the suction holes on the outer periphery of the document suction duct. and a negative pressure generating means connected to the openings of the two ducts, the superimposed original and photosensitive paper sent after printing exposure to the separating section between the two ducts. In a paper separation device such as a diazo copying machine, which feeds documents and separates them by negative pressure of air generated near the suction holes of both the ducts, the paper is separated by the outer circumferential surface of the document suction duct between the conveyor belts and the document is conveyed through the suction holes. A paper separation auxiliary device characterized in that a weir is provided at a position on the upstream side in the direction and has a height substantially the same as that of the conveyor belt. 2. The paper separating device according to claim 1, wherein the surface of the weir facing the suction hole is a concave arc surface.