JPH0611988Y2 - Paper transport device - Google Patents
Paper transport deviceInfo
- Publication number
- JPH0611988Y2 JPH0611988Y2 JP1983053118U JP5311883U JPH0611988Y2 JP H0611988 Y2 JPH0611988 Y2 JP H0611988Y2 JP 1983053118 U JP1983053118 U JP 1983053118U JP 5311883 U JP5311883 U JP 5311883U JP H0611988 Y2 JPH0611988 Y2 JP H0611988Y2
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- conveying member
- detection roller
- size
- document
- 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
Links
Landscapes
- Manual Feeding Of Sheets (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
- Handling Of Cut Paper (AREA)
- Paper Feeding For Electrophotography (AREA)
- Controlling Sheets Or Webs (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
Description
【考案の詳細な説明】 本考案は、複写機，印刷機などの用紙搬送装置に関し、
搬送する用紙の搬送方向，長さ，サイズを正確に検知
し、その後の処理装置に伝達するようにしたものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sheet conveying device such as a copying machine or a printing machine,
It is configured to accurately detect the conveying direction, length, and size of a sheet to be conveyed and to transmit the sheet to a subsequent processing device.
従来、この種の装置で通路上に無端ベルトなど用紙搬送
部材を摺接させ、この搬送部材の一端給紙部に用紙と接
して回転するとともに、その回転量によつて用紙サイズ
を検出する用紙サイズ検出ローラを臨ませ、かつ、この
検出ローラと搬送部材の給紙端との間に用紙の先端を検
出するセンサーを設けたものは知られている。Conventionally, in this type of device, a sheet conveying member such as an endless belt is slidably brought into contact with a passage, one end of the conveying member is brought into contact with a sheet to rotate, and a sheet size is detected by the rotation amount. It is known that the size detection roller is exposed and a sensor for detecting the leading edge of the sheet is provided between the detection roller and the sheet feeding end of the conveying member.
かゝる装置にあつて、検出ローラと搬送部材との速度が
同一であつた場合には、例えば、用紙先端がカールして
搬送部材にスムーズに受け継がれなかつたときは、用紙
はループ状に湾曲したまゝ送られ、この用紙後端を検知
したセンサーからの信号で検出ローラの回転量を算定す
ると、適正な用紙サイズの検出ができない欠点が起る。
この欠点を除くべく本考案はなされたものである。In such a device, if the detection roller and the transport member have the same speed, for example, if the leading edge of the paper is curled and cannot be smoothly transferred to the transport member, the paper will form a loop. If the amount of rotation of the detection roller is calculated based on the signal from the sensor that detects the trailing edge of the sheet when it is conveyed in a curved shape, there is a drawback that the proper sheet size cannot be detected.
The present invention has been made to eliminate this drawback.
以下図面について実施例の詳細を述べる。The details of the embodiment will be described below with reference to the drawings.
尚、本例では、複写機に使用する原稿搬送装置について
述べる。In this example, a document feeder used in a copying machine will be described.
(1)は複写機本体で、この本体には請求範囲の通路面に
相当する原稿ガラス(2)が張設され、この原稿ガラス(2)
の上面には原稿搬送装置(4)を構成する原稿搬送用の無
端ベルト(5)が摺接され、この無端ベルト(5)の一端給紙
部には、原稿ガイド(6)を通じて差込まれる原稿の表裏
に接して回転するとともに、その回転数によつて原稿サ
イズを検出する上記無端ベルト(5)への原稿送りを兼用
する原稿サイズ検出ローラ(7)が臨まされ、かつ、この
検出ローラ(7)と、上記無端ベルト(5)との間に原稿の
先，後端を検出し、上記検出ローラ(7)の起動，停止を
司るセンサー(8)が臨まされる。上記に云う検出ローラ
(7)は、図のように上下一対をなし、上部のローラに駆
動がかけられており、そしてこの上部のローラは下部の
ローラに接離するようになつている。よつて、原稿を検
出ローラ(7)間に差込み、原稿先端がセンサー(8)によつ
て検出されると、検出ローラ(7)が原稿を圧接すると同
時に回転して原稿を無端ベルト(5)の一端に送り込み、
又、原稿の終端がセンサー(8)を通過し終つた時点での
上記検出ローラ(7)の回転数によつて用紙のサイズが検
出されるとともに、その検出信号によつて複写機が応動
し、上記サイズに対応するコピーが得られる、この種原
稿搬送装置の一般的形態である。そこで、本案で取上げ
ようとする問題は、上記原稿に曲りぐせがついていた場
合、この原稿が検出ローラ(7)と無端ベルト(5)とにまた
がつて移動する過程で、曲つたまゝ上記検出ローラ(7)
と無端ベルトとの間を移動することになり、従つて、こ
の曲つたまゝの原稿をセンサー(8)が検出するため、セ
ンサーの検出時間に過不足が生じ、最終的に原稿の後端
がセンサー(8)を通過し終つたときの検出ローラ(7)の回
転数が狂つてしまい、該ローラの回転数で判別される原
稿サイズの検出ができなくなる。(1) is the main body of the copying machine, and the original glass (2) corresponding to the passage surface of the claim is stretched on the main body, and the original glass (2)
An endless belt (5) for conveying originals which constitutes the original conveying device (4) is slidably contacted on the upper surface of the endless belt (5), and one end of the endless belt (5) is inserted through the original guide (6). The document size detection roller (7) that rotates while contacting the front and back of the document and that also feeds the document to the endless belt (5) that detects the document size based on the number of rotations is exposed, and this detection roller A sensor (8) is provided between the endless belt (5) and the endless belt (5) to detect the leading end and the trailing end of the document and to start and stop the detection roller (7). Detection roller mentioned above
As shown in the figure, (7) forms a pair of upper and lower sides, the upper roller is driven, and the upper roller is brought into contact with and separated from the lower roller. Therefore, when the document is inserted between the detection rollers (7) and the leading edge of the document is detected by the sensor (8), the detection roller (7) presses the document and rotates at the same time to rotate the document to the endless belt (5). To one end of
Also, the size of the paper is detected by the number of rotations of the detection roller (7) at the time when the end of the document has passed the sensor (8), and the copy machine responds by the detection signal. This is a general form of this type of document feeder, which can obtain a copy corresponding to the above size. Therefore, the problem to be picked up in this plan is that when the above-mentioned document has a curl, the document is bent in the process of moving across the detection roller (7) and the endless belt (5). Detection roller (7)
Therefore, the sensor (8) detects the original of this curved sheet, and therefore the sensor detection time becomes excessive or short, and finally the rear edge of the original is detected. When the sheet has passed through the sensor (8), the number of rotations of the detection roller (7) changes, and the document size determined by the number of rotations of the roller cannot be detected.
そこで本案では、原稿が上記検出ローラ(7)と、無端ベ
ルト(5)との間をまたがつて移動する過程で、この原稿
に引張力を与えて搬送させもつて、上記センサーによる
適正な原稿検出を行わせて、適正な原稿サイズの判断を
可能としたもので、その要旨構成は、上記検出ローラ
(7)と無端ベルト(5)とに原稿がまたがつて搬送されてい
る時に、無端ベルトが原稿に対しスリツプしながら用紙
を搬送するように、上記無端ベルト(5)の搬送速度を検
出ローラ(7)のそれより早く設定したものである。而し
て本実施例では、上記センサー(8)の前方で、かつ、こ
のセンサーに近接させて挿入原稿のストツパー(9)が開
閉自在に設けられている。Therefore, in the present proposal, in the process of moving the original across the detection roller (7) and the endless belt (5), the original is conveyed by applying a pulling force to the original so that an appropriate original is detected by the sensor. The detection roller enables detection of the proper document size.
When a document is conveyed across (7) and the endless belt (5), the endless belt detects the conveyance speed of the endless belt (5) so that the endless belt conveys the paper while slipping on the document. It was set earlier than that of (7). Thus, in this embodiment, the stopper (9) for the inserted document is provided in front of the sensor (8) and close to the sensor so as to be openable and closable.
このように搬送部材(5)に至る用紙をゲートストツパー
(9)等で位置決めし、本体装置からの給紙指示信号でス
トツパーを退避させ、用紙をサイズ検出ローラで送り出
すものにあつては、サイズ検出ローラは用紙の先端検出
信号から後端検知信号までの回転量を検出して、用紙サ
イズとすること無く、この給紙指示信号から用紙後端検
知信号までの回転量で用紙サイズを算出することも可能
である。In this way, the paper reaching the transport member (5) is transferred to the gate stopper.
In the case of positioning with (9), etc., retracting the stopper by the paper feed instruction signal from the main unit, and feeding the paper with the size detection roller, the size detection roller is from the leading edge detection signal of the sheet to the trailing edge detection signal. It is also possible to calculate the sheet size by detecting the amount of rotation of the sheet and determining the sheet size by the amount of rotation from the paper feed instruction signal to the sheet trailing edge detection signal without setting the sheet size.
本考案は、上述のように構成したので、用紙先端を入口
ストツパーに突き当て位置決めした後、用紙サイズ検出
ローラから搬送部材に中継するとき、用紙がループ状に
カールしても、搬送部材と該検出ローラとの速度差でカ
ールが生じた都度、速やかに修正され、しかも用紙検出
ローラと用紙との間でスリツプが生ずる恐れがないか
ら、検知センサーからの用紙後端検知信号で、上記検出
ローラの回転量を割り出すことにより、常に正確な用紙
サイズの検出が可能である。Since the present invention is configured as described above, even when the paper is curled in a loop when the paper size detection roller is relayed to the conveying member after the leading edge of the paper is abutted against the entrance stopper and positioned, even if the paper is curled in a loop shape, Each time a curl occurs due to the speed difference from the detection roller, the curl is promptly corrected, and there is no risk of slippage between the paper detection roller and the detection roller. By calculating the rotation amount of, it is possible to always detect the paper size accurately.
第１図は全体装置の概略正面図，第２図は同上要部の拡
大正面図である。 (2)……通路面，(5)……用紙搬送部材，(7)……用紙サ
イズ検出ローラ，(8)……センサー。FIG. 1 is a schematic front view of the entire apparatus, and FIG. 2 is an enlarged front view of the main part of the same. (2) …… Passage surface, (5) …… Paper transport member, (7) …… Paper size detection roller, (8) …… Sensor.
Claims (1)
を摺接させ、この搬送部材の一端給紙部に用紙に接して
回転するとともに、その回転量によって用紙サイズの検
出と、上記搬送部材への用紙送りとを兼用する用紙サイ
ズ検出ローラを臨ませ、かつ、この検出ローラと上記搬
送部材の給紙入口端との間に用紙の端部検出センサーを
臨ませた装置において、上記検出ローラと搬送部材との
速度の関係が、該搬送部材の速度を上記検出ローラの速
度より速くなるように設定せしめ、用紙が検出ローラと
搬送部材とにまたがっているときに、搬送部材が用紙に
対しスリップするよう構成したことを特徴とする用紙搬
送装置。1. A sheet conveying member such as an endless belt is slidably brought into contact with a passage surface, one end of the conveying member is brought into contact with a sheet to rotate, and a sheet size is detected by the amount of rotation and the sheet is conveyed. An apparatus in which a sheet size detection roller that also serves to feed a sheet to a member is faced, and a sheet edge detection sensor is faced between the detection roller and the sheet feed inlet end of the conveying member, The speed relationship between the conveying member and the conveying member is set so that the speed of the conveying member is faster than the speed of the detection roller, and when the sheet is straddling the detecting roller and the conveying member, A sheet conveying device characterized by being configured to slip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1983053118U JPH0611988Y2 (en) | 1983-04-08 | 1983-04-08 | Paper transport device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1983053118U JPH0611988Y2 (en) | 1983-04-08 | 1983-04-08 | Paper transport device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59159649U JPS59159649U (en) | 1984-10-26 |
| JPH0611988Y2 true JPH0611988Y2 (en) | 1994-03-30 |
Family
ID=30183466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1983053118U Expired - Lifetime JPH0611988Y2 (en) | 1983-04-08 | 1983-04-08 | Paper transport device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0611988Y2 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5527344B2 (en) * | 1973-12-26 | 1980-07-19 | ||
| JPS51113637A (en) * | 1975-03-28 | 1976-10-06 | Canon Inc | Copying machine |
| JPS54122566A (en) * | 1978-03-13 | 1979-09-22 | Ricoh Co Ltd | Manuscript delivery device for duplicating machine |
| JPS5670565A (en) * | 1979-11-13 | 1981-06-12 | Ricoh Co Ltd | Automatic original conveyor of copying machine |
| JPS5777143A (en) * | 1980-10-31 | 1982-05-14 | Konishiroku Photo Ind Co Ltd | Sheet size detector |
-
1983
- 1983-04-08 JP JP1983053118U patent/JPH0611988Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59159649U (en) | 1984-10-26 |
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