JPH01192661A - Device for conveying sheet - Google Patents

Device for conveying sheet

Info

Publication number
JPH01192661A
JPH01192661A JP63012901A JP1290188A JPH01192661A JP H01192661 A JPH01192661 A JP H01192661A JP 63012901 A JP63012901 A JP 63012901A JP 1290188 A JP1290188 A JP 1290188A JP H01192661 A JPH01192661 A JP H01192661A
Authority
JP
Japan
Prior art keywords
diameter
small
roller
driven
rollers
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
Application number
JP63012901A
Other languages
Japanese (ja)
Inventor
Takuya Mizuguchi
卓哉 水口
Yoshikazu Katsumata
勝間田 芳和
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 JP63012901A priority Critical patent/JPH01192661A/en
Publication of JPH01192661A publication Critical patent/JPH01192661A/en
Pending legal-status Critical Current

Links

Landscapes

  • Delivering By Means Of Belts And Rollers (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Advancing Webs (AREA)

Abstract

PURPOSE:To simplify the structure of the captioned device by alternately installing a plurality of large-diameter conveying rollers and a plurality of small-diameter conveying roller on a driving shaft and installing small-diameter driven rollers which are in contact with the large-diameter conveying rollers and large-diameter driven roller which are in contact with the small-diameter conveying rollers on a driven shaft. CONSTITUTION:Large-diameter conveying rollers 21 are press fitted on a driving shaft 20 being formed mutually nonrotatable, and small-diameter conveying rollers 22 are rotatably installed alternately with the large-diameter conveying rollers 21 on the shaft 20. Small-diameter driven rollers 24 which are in contact with the large-diameter conveying roller 21 and large-diameter driven rollers 25 which are in contact with the small-diameter conveying rollers 22 are provided on a driven shaft 23 and the small-diameter driven rollers 24 are rotatable with respect to the shaft 23. By this structure, the sheet conveying rollers can be formed into a simple shape lowering a cost.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は複写機等に用いられ、紙等のシートの搬送装置
に関するものである。
DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a conveying device for sheets such as paper, which is used in copying machines and the like.

従来の技術 以下、従来のシートの搬送装置の例を第2図〜第4図を
参照して複写機に用いた場合を例にして説明する。
2. Description of the Related Art Hereinafter, an example of a conventional sheet conveying device will be described with reference to FIGS. 2 to 4, taking as an example the case where it is used in a copying machine.

第2図において1は給紙装置であり、この給紙装置によ
って複写紙2が搬送される。3は感光ドラムであり、こ
の感光ドラム3の周囲に現像器4、転写器5、除電器6
、クリーニングブレード7等が取り付けられていうる。
In FIG. 2, reference numeral 1 denotes a paper feeder, and copy paper 2 is conveyed by this paper feeder. 3 is a photosensitive drum, and around this photosensitive drum 3 there are a developing device 4, a transfer device 5, and a static eliminator 6.
, cleaning blade 7, etc. may be attached.

8は定着器であり、中にヒータが設けられている。9は
複写紙2の搬送装置であり、複写紙2の排出口の付近に
設けられている。10は排紙トレーである。
8 is a fixing device in which a heater is provided. Reference numeral 9 denotes a conveying device for the copy paper 2, which is provided near the outlet for discharging the copy paper 2. 10 is a paper discharge tray.

以上のように構成された複写機は、以下の動作によって
複写紙2上に原稿の画像を形成する。感光ドラム3上の
静電潜像は現像器4によって顕像化され、転写器5によ
って複写紙2に転写される。
The copying machine configured as described above forms an image of a document on copy paper 2 through the following operations. The electrostatic latent image on the photosensitive drum 3 is visualized by a developing device 4 and transferred onto copy paper 2 by a transfer device 5.

感光ドラム3上の静電画像は除電器6によって除電され
、感光ドラム3上に残留しているトナーはクリーニング
ブレード7によって掻き落とされる。
The electrostatic image on the photosensitive drum 3 is neutralized by a static eliminator 6, and the toner remaining on the photosensitive drum 3 is scraped off by a cleaning blade 7.

トナーが転写された複写紙2は定着器8によって定着処
理され、搬送装置9によって排紙トレー10へ搬送され
る。
The copy paper 2 onto which the toner has been transferred is subjected to a fixing process by a fixing device 8, and then transported to a paper output tray 10 by a transport device 9.

第3図に第1の従来のシートの搬送装置を示す。FIG. 3 shows a first conventional sheet conveying device.

11は駆動シャフトであり、この駆動シャフト11は搬
送ローラ12と搬送ローラより径の大きな曲げローラ1
3を交互に有している。14は従動シャフトであり、こ
の従動シャフト14は搬送ローラ12と接する従動ロー
ラ15を有している。
11 is a drive shaft, and this drive shaft 11 is connected to a conveyance roller 12 and a bending roller 1 having a larger diameter than the conveyance roller.
3 alternately. 14 is a driven shaft, and this driven shaft 14 has a driven roller 15 in contact with the conveying roller 12.

このような第1の従来のシートの搬送装置は、駆動シャ
フト11の回転によって搬送ローラ12と従動ローラ1
5の間にはさまれた紙を搬送する。そして搬送ローラ1
2と従動ローラ15の間にはさまれた紙は曲げローラ1
3によって曲げられ、紙は波打った状態となり、紙のそ
りを防止することができる。
In such a first conventional sheet conveying device, the conveying roller 12 and the driven roller 1 are rotated by the rotation of the drive shaft 11.
The paper sandwiched between 5 is conveyed. and conveyance roller 1
The paper sandwiched between the bending roller 1 and the driven roller 15
3, the paper becomes wavy and can prevent warping of the paper.

第4図に第2の従来のシートの搬送装置を示す。16は
駆動シャフトであり、この駆動シャフト16は搬送ロー
ラ17を有している。18は従動シャフトであり、この
従動シャフト18は搬送ローラ17と接する従動ローラ
19を有している。そして従動ローラ19は両端に鍔を
有している。
FIG. 4 shows a second conventional sheet conveying device. 16 is a drive shaft, and this drive shaft 16 has a conveyance roller 17. 18 is a driven shaft, and this driven shaft 18 has a driven roller 19 in contact with the conveying roller 17. The driven roller 19 has flanges at both ends.

以上のように構成された第2の従来のシートの搬送装置
は駆動シャフト16の回転によって搬送ローラ17と従
動ローラ19の間にはさまれた紙を搬送する。この時、
従動ローラ19の鍔によって紙が波打った状態となり、
紙のそりを防止することができる。
The second conventional sheet conveyance device configured as described above conveys the paper sandwiched between the conveyance roller 17 and the driven roller 19 by the rotation of the drive shaft 16. At this time,
The paper becomes wavy due to the collar of the driven roller 19,
Paper warping can be prevented.

発明が解決しようとする課題 以上のような第1の従来のシートの搬送装置は部品点数
が多(、第2の従来のシートの搬送装置は従動ローラに
鍔を形成しなければならないため、従動ローラを作る時
に長尺の管を切断して作ることができず、製造工程が多
くなるなど製造価格が高くなるという問題点を有してい
た。
Problems to be Solved by the Invention The first conventional sheet conveying device as described above has a large number of parts (the second conventional sheet conveying device requires a collar to be formed on the driven roller, When making rollers, it is not possible to cut a long tube to make them, which has the problem of increasing manufacturing costs due to the increased number of manufacturing steps.

本発明は以上のような問題点を解消するものであり、価
格の安いシートの搬送装置を提供するものである。
The present invention solves the above-mentioned problems and provides an inexpensive sheet conveying device.

課題を解決するための手段 上記の課題を解決するために本発明は、大径と小径の搬
送ローラを交互に駆動シャフトに取り付け、大径の搬送
ローラに接する小径の従動ローラと小径の搬送ローラに
接する大径の従動ローラを従動シャフトに取り付けた。
Means for Solving the Problems In order to solve the above-mentioned problems, the present invention alternately attaches large-diameter and small-diameter conveyance rollers to a drive shaft, and a small-diameter driven roller and a small-diameter conveyance roller that are in contact with the large-diameter conveyance roller. A large diameter driven roller that is in contact with is attached to the driven shaft.

作  用 上記した手段により本発明のシートの搬送装置は、大径
の搬送ローラおよび小径の搬送ローラによって紙が波打
ち、紙の反りをなくすことができる。
Effect: By using the above-described means, the sheet conveyance device of the present invention can eliminate paper waving and warpage caused by the large-diameter conveyance roller and the small-diameter conveyance roller.

実施例 以下、本発明のシートの搬送装置の一実施例を第1図を
参照して説明する。
Embodiment Hereinafter, an embodiment of the sheet conveying apparatus of the present invention will be described with reference to FIG.

20は駆動シャフトであり、この駆動シャフト20は大
径の搬送ローラ21と小径の搬送ローラ22を交互に有
している。そして大径の搬送ローラ21は駆動シャフト
20に対し相対的に回転不可能に圧入されており、小径
の搬送ローラ22は駆動シャフト20に対し回転自在に
なるようにベアリングを介して挿入されている。23は
従動シャフトであり、この従動シャフト23は大径の搬
送ローラ21と接する小径の従動ローラ24および小径
の搬送ローラ22と接する大径の従動ローラ25を有し
ている。そして小径の従動ローラ24あるいは大径の従
動ローラ25の少なくとも一方は従動シャフト23に対
して回転自在に取り付けられている。
20 is a drive shaft, and this drive shaft 20 has large diameter conveyance rollers 21 and small diameter conveyance rollers 22 alternately. The large-diameter conveyance roller 21 is press-fitted into the drive shaft 20 so as to be relatively unrotatable, and the small-diameter conveyance roller 22 is inserted through a bearing so as to be rotatable relative to the drive shaft 20. . 23 is a driven shaft, and this driven shaft 23 has a small-diameter driven roller 24 in contact with the large-diameter conveyance roller 21 and a large-diameter driven roller 25 in contact with the small-diameter conveyance roller 22. At least one of the small diameter driven roller 24 and the large diameter driven roller 25 is rotatably attached to the driven shaft 23.

以上のように構成された本実施例のシートの搬送装置の
動作を説明する。
The operation of the sheet conveyance device of this embodiment configured as described above will be explained.

まず駆動シャフト20がモータ等(図示せず)の駆動源
より駆動され、大径の搬送ローラ21が回転をする。す
ると小径の従動ローラ24が大径の搬送ローラ21に追
従して回転をする。この状態で両搬送ローラ21,22
および両従動ローラ24.25の間に紙を挟むと大径の
搬送ローラ21の回転力によって紙が搬送される。そし
て紙は両搬送ローラ21,22および両従動ローラ24
.25の径の相違によって波打つため、反ることがない
First, the drive shaft 20 is driven by a drive source such as a motor (not shown), and the large diameter conveyance roller 21 rotates. Then, the small-diameter driven roller 24 follows the large-diameter conveyance roller 21 and rotates. In this state, both conveyance rollers 21 and 22
When the paper is sandwiched between both driven rollers 24 and 25, the paper is transported by the rotational force of the large diameter transport roller 21. Then, the paper is transported by both conveyance rollers 21, 22 and both driven rollers 24.
.. The difference in the diameter of 25 causes it to wave, so it does not warp.

なお以上の実施例では小径の搬送ローラ22を駆動シャ
フト20に対して回転自在に取り付けたが、大径の搬送
ローラ21を駆動シャフト20に回転自在に取り付けて
もよい。
In the above embodiment, the small-diameter conveyance roller 22 is rotatably attached to the drive shaft 20, but the large-diameter conveyance roller 21 may be rotatably attached to the drive shaft 20.

発明の詳細 な説明したように本発明のシートの搬送装置は、大径と
小径の搬送ローラを交互に駆動シャフトに取り付け、大
径の搬送ローラに接する小径の従動ローラと小径の搬送
ローラに接する大径の従動ローラを従動シャフトに取り
付けたため、部品点数が少なく、また単純な形状のロー
ラによって紙の反りをなくすことができる。
DETAILED DESCRIPTION OF THE INVENTION As described in detail, the sheet conveyance device of the present invention has large diameter and small diameter conveyance rollers attached alternately to a drive shaft, and a small diameter driven roller in contact with the large diameter conveyance roller and a small diameter conveyance roller in contact with the small diameter conveyance roller. Since the large-diameter driven roller is attached to the driven shaft, the number of parts is small, and the simple shape of the roller eliminates paper warping.

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

第1図は本発明のシートの搬送装置の一実施例の要部正
面図、第2図は本発明および従来のシート搬送装置を用
いた複写機の側断面図、第3図は第1の従来のシートの
搬送装置の要部正面図、第4図は第2の従来のシートの
搬送装置の要部正面図である。 20・・・駆動シャフト  21・・・大径の搬送ロー
ラ22・・・小径の搬送ローラ  23・・・従動シャ
フト24・・・小径の従動ローラ 25・・・大径の従動ローラ 代理人の氏名 弁理士 中尾敏男 ほか1名2−・夜$
紙 tQ−g動Tリフト !2f−−−人りEっl映f(ワーラ 舛−・−tk怪のcL勤υづ ts−rq+rt  ’ p−一診飲X1 s−’Ix;写息 E−一一辣(番 第  2  図                  
     7−−−クリー;ンププレーロ8・−り―春
巻 q−’41ボJ疑1 IO−・−JV?概トレー
FIG. 1 is a front view of essential parts of an embodiment of a sheet conveying device of the present invention, FIG. 2 is a side sectional view of a copying machine using the present invention and a conventional sheet conveying device, and FIG. FIG. 4 is a front view of a main part of a conventional sheet transport device. FIG. 4 is a front view of a main part of a second conventional sheet transport device. 20... Drive shaft 21... Large diameter conveyance roller 22... Small diameter conveyance roller 23... Driven shaft 24... Small diameter driven roller 25... Name of large diameter driven roller agent Patent attorney Toshio Nakao and 1 other person 2-/night $
Paper tQ-g dynamic T lift! 2f---People's picture f(Waramasu-・-tk Kai's cL work υzuts-rq+rt'p-IchikendrinkX1 s-'Ix; Photo E-11 side (No. 2 figure
7----Cree;umprero 8・-ri-spring roll q-'41boJ doubt 1 IO-・-JV? general tray

Claims (1)

【特許請求の範囲】[Claims] 複数の大径の搬送ローラと複数の小径の搬送ローラを交
互に駆動シャフトに装着するとともに前記両搬送ローラ
のいづれか一方を前記駆動シャフトに対して回転自在に
取り付け、前記大径の搬送ローラに接する小径の従動ロ
ーラと前記小径の搬送ローラに接する大径の従動ローラ
を従動シャフトに取り付けたことを特徴とするシートの
搬送装置。
A plurality of large-diameter conveyance rollers and a plurality of small-diameter conveyance rollers are alternately attached to a drive shaft, and one of the two conveyance rollers is rotatably attached to the drive shaft so as to be in contact with the large-diameter conveyance roller. What is claimed is: 1. A sheet conveying device, comprising: a small-diameter driven roller; and a large-diameter driven roller in contact with the small-diameter conveying roller; attached to a driven shaft.
JP63012901A 1988-01-22 1988-01-22 Device for conveying sheet Pending JPH01192661A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63012901A JPH01192661A (en) 1988-01-22 1988-01-22 Device for conveying sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63012901A JPH01192661A (en) 1988-01-22 1988-01-22 Device for conveying sheet

Publications (1)

Publication Number Publication Date
JPH01192661A true JPH01192661A (en) 1989-08-02

Family

ID=11818280

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63012901A Pending JPH01192661A (en) 1988-01-22 1988-01-22 Device for conveying sheet

Country Status (1)

Country Link
JP (1) JPH01192661A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999020556A1 (en) * 1996-09-17 1999-04-29 Heidelberger Druckmaschinen Ag Method and apparatus for transporting a web material
US7458573B2 (en) * 2002-12-11 2008-12-02 Lg N-Sys Inc. Media pick-up device of media dispenser
JP2017100880A (en) * 2017-01-26 2017-06-08 京セラドキュメントソリューションズ株式会社 Image formation apparatus
US10189658B2 (en) * 2014-08-29 2019-01-29 Giesecke+Devrient Currency Technology Gmbh Stacking device for stacking value documents

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999020556A1 (en) * 1996-09-17 1999-04-29 Heidelberger Druckmaschinen Ag Method and apparatus for transporting a web material
US7458573B2 (en) * 2002-12-11 2008-12-02 Lg N-Sys Inc. Media pick-up device of media dispenser
US10189658B2 (en) * 2014-08-29 2019-01-29 Giesecke+Devrient Currency Technology Gmbh Stacking device for stacking value documents
JP2017100880A (en) * 2017-01-26 2017-06-08 京セラドキュメントソリューションズ株式会社 Image formation apparatus

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