JP2001233469A - Paper carrying device - Google Patents

Paper carrying device

Info

Publication number
JP2001233469A
JP2001233469A JP2000052182A JP2000052182A JP2001233469A JP 2001233469 A JP2001233469 A JP 2001233469A JP 2000052182 A JP2000052182 A JP 2000052182A JP 2000052182 A JP2000052182 A JP 2000052182A JP 2001233469 A JP2001233469 A JP 2001233469A
Authority
JP
Japan
Prior art keywords
transport
roller
document
guide
conveying
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.)
Granted
Application number
JP2000052182A
Other languages
Japanese (ja)
Other versions
JP3638496B2 (en
Inventor
Masayuki Tsunoda
昌之 角田
Hideki Kitagawa
英樹 北川
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.)
Kyocera Document Solutions Inc
Original Assignee
Kyocera Mita Corp
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 Kyocera Mita Corp filed Critical Kyocera Mita Corp
Priority to JP2000052182A priority Critical patent/JP3638496B2/en
Publication of JP2001233469A publication Critical patent/JP2001233469A/en
Application granted granted Critical
Publication of JP3638496B2 publication Critical patent/JP3638496B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Abstract

PROBLEM TO BE SOLVED: To remove a carrier lower guide of a paper carrying device from a device body for machine maintenance or replacement of parts easily and in a short time without being prohibited by a protrusion on a side plate or other parts. SOLUTION: A carrier lower guide part is parted into three members of a front carrier guide, a middle carrier guide, and a rear carrier guide in a carrying roller axial direction, and a carrier lower roller is installed on the middle carrying guide part.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明が属する技術分野】本発明は、複写機、プリンタ
ー、ファクシミリ、スキャナ等に適用され、原稿や転写
紙等の用紙を搬送する用紙搬送装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper conveying apparatus which is applied to a copying machine, a printer, a facsimile, a scanner and the like, and conveys a sheet such as a document or a transfer sheet.

【0002】[0002]

【従来の技術】従来より複写機等において原稿や転写紙
等の用紙を搬送する用紙搬送装置は、上下ローラと搬送
上下ガイド部が互いに対向配置して形成された搬送面か
らなる搬送路を有しており、このような搬送路に所定の
順序で原稿や用紙を搬送するようになっている。上下の
ガイドによって原稿や用紙の先端をガイド間に導き搬送
上下ローラのニップ間を通過させることによって原稿や
用紙を所定の通内を搬送させるている。
2. Description of the Related Art Conventionally, in a copying machine or the like, a paper transporting apparatus for transporting paper such as originals and transfer paper has a transport path comprising a transport surface formed by upper and lower rollers and a transport upper / lower guide section facing each other. Documents and paper are conveyed to such a conveyance path in a predetermined order. The leading edge of the original or paper is guided between the guides by the upper and lower guides, and is passed between the nips of the transporting upper and lower rollers to transport the original or paper through a predetermined passage.

【0003】しかし、搬送下ローラは搬送下ガイドの下
部に位置し本体側に取り付けられていることから、原稿
搬送路下部のメンテ時において、下ローラ等の部品を清
掃、交換する場合には、搬送下ガイドを外した後、機械
本体に取り付けられたローラ固定部材を取り出す必要が
ある。下側ガイド板を外す際に、側版の突起や他の部品
が邪魔になって取り外しが難しく作業時間が余分にかか
っていた。さらにはローラ固定部材を機械本体から取り
外すためにビス類をゆるめるのに手間がかかるとともに
構造が複雑になり易い。
However, since the lower transport roller is located below the lower transport guide and is attached to the main body, when cleaning and replacing parts such as the lower roller during maintenance of the lower portion of the document transport path, After removing the lower conveyance guide, it is necessary to take out the roller fixing member attached to the machine body. When removing the lower guide plate, protrusions and other parts of the side plate obstructed the removal, making it difficult to remove and requiring extra work time. Furthermore, it takes time and effort to loosen the screws to remove the roller fixing member from the machine body, and the structure tends to be complicated.

【0004】[0004]

【発明が解決しようとする課題】本発明の目的は、上記
事情に鑑み、用紙搬送路下部の清掃、部品交換が簡便に
できる用紙搬送装置を提供することにある。
SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to provide a paper transporting apparatus which can easily clean a lower portion of a paper transporting path and replace components.

【0005】[0005]

【課題を解決する為の手段】前記課題を解決するため
に、請求項1の発明は搬送上ローラと搬送下ローラから
なる搬送ローラと、搬送上ガイドと搬送下ガイドからな
る搬送ガイドとを配設して形成される搬送路に沿って用
紙を搬送する用紙搬送装置において、下搬送ガイド部が
搬送ローラ軸方向に前搬送ガイド部、中搬送ガイド部、
後搬送ガイド部の3部分に分割され、搬送下ローラ軸両
端の支持部が中搬送ガイド部に取り付けられている用紙
搬送装置であることを特徴とする。
According to a first aspect of the present invention, there is provided a transport roller comprising an upper transport roller and a lower transport roller, and a transport guide comprising an upper transport guide and a lower transport guide. In a paper transport device that transports paper along a transport path that is formed and formed, a lower transport guide section includes a front transport guide section, a middle transport guide section,
The paper transport device is characterized by being divided into three portions of a rear transport guide portion, and supporting portions at both ends of a lower transport roller shaft are attached to the middle transport guide portion.

【0006】また、請求項2の発明は該支持部における
該搬送下ローラ軸両端の軸受部が、搬送上下ローラのニ
ップ方向に開口していること用紙搬送装置であるこを特
徴とする。
According to a second aspect of the present invention, there is provided a sheet transport device in which bearing portions at both ends of the lower transport shaft in the support portion are opened in the nip direction of upper and lower transport rollers.

【0007】また請求項3の発明は該支持部の一端部
が、中搬送ガイド部から垂直に配設された縦取り付け板
に位置した支点に回動自在に取り付けられるとともに、
該搬送下ローラ軸両端の各支持部の他端部と搬送ガイド
の中間にバネが取り付けられ、バネの押圧力によって搬
送下ローラが搬送上ローラに付勢されている用紙搬送装
置であることを特徴とする。
According to a third aspect of the present invention, one end of the support portion is rotatably mounted on a fulcrum located on a vertical mounting plate vertically disposed from the middle transport guide portion.
A spring is mounted between the other end of each of the support portions at both ends of the lower conveying roller shaft and the conveying guide, and the lower conveying roller is urged to the upper conveying roller by the pressing force of the spring. Features.

【0008】搬送下ガイド部をローラ軸方向に3分割す
ることにより、搬送下ガイド部の原稿読取装置本体から
の取り外しが容易になる。ローラ軸支持部材のローラ軸
受の上下ローラニップ側を開口させたことによって、搬
送下ガイドと搬送下ローラを一体的に取り外した後で、
搬送下ローラを搬送下ガイドから取り外すことが容易と
なり、部品メンテ、交換が容易となった。ローラ軸支持
部材一端部と搬送下ガイド板の位置決め用突起に押えバ
ネを引っかけた状態で、搬送下ガイドと下ローラを一体
的に着脱できるのでバネの破損及び紛失が無い。また、
搬送ガイドに支持部材を取り付けているため保持部材の
上部が開口していてもこれらの一体物を本体に取り付け
る際にバラバラにならない。ガイド部の本体からの取り
外しが容易になり、搬送下ガイドと搬送下ローラを一体
的に取り外した後で、搬送下ローラを搬送下ガイドから
取り外すことが可能となり、部品メンテ、交換が容易と
なった。
By dividing the lower conveyance guide into three parts in the roller axis direction, the lower conveyance guide can be easily removed from the main body of the original reading apparatus. By opening the upper and lower roller nip sides of the roller bearing of the roller shaft support member, after removing the transport lower guide and the transport lower roller integrally,
The transport lower roller can be easily removed from the transport lower guide, and maintenance and replacement of parts are facilitated. The transport lower guide and the lower roller can be integrally attached and detached in a state where the pressing spring is hooked on one end of the roller shaft support member and the positioning projection of the transport lower guide plate, so that the spring is not damaged or lost. Also,
Since the support member is attached to the transport guide, even when the upper portion of the holding member is open, the integrated members do not fall apart when attached to the main body. The guide section can be easily removed from the main body.After the transport lower guide and the transport lower roller have been integrally removed, the transport lower roller can be removed from the transport lower guide, making component maintenance and replacement easier. Was.

【0009】[0009]

【発明の実施形態】図1は、この発明による用紙搬送装
置の一実施形態が組み込まれた原稿読取装置を示す図で
ある。以下、この実施形態を詳述するのに先立って原稿
読取装置の概要について説明する。なお、本原稿読取装
置は図示しない、画像形成装置、給紙部を含む複写機本
体の上部に取り付けられる。
FIG. 1 is a diagram showing a document reading apparatus in which an embodiment of a paper transport apparatus according to the present invention is incorporated. Hereinafter, an outline of the document reading apparatus will be described prior to describing this embodiment in detail. The original reading apparatus is attached to an upper part of a copying machine main body including an image forming apparatus and a paper feeding unit (not shown).

【0010】この原稿読取装置は、トップページを上向
きにしてページ順に原稿トレイ10に載置される原稿束
から、1枚ずつ原稿を取り込んでその画像情報を読み取
り、トップページを下向きにしてページ順に排出トレイ
80に排出するものであり、片面にのみ画像情報が形成
された片面原稿のみならず、表裏両面に画像情報が形成
された両面原稿についても表裏両面の画像情報を読み取
るとともに、原稿束のページ順を変えてしまうことなく
排出できるものである。なお、この実施形態は、複写機
の上部に搭載する場合を例にしているが、同様の構成に
よって、スキャナー装置やファクシミリ装置等に適用す
ることもできる。
This document reading apparatus takes in documents one by one from a document bundle placed on the document tray 10 in the page order with the top page facing upward, reads the image information thereof, and turns the top page downwards in the page order. The sheet is discharged to the discharge tray 80. The image information on both the front and back sides is read not only for a single-sided document having image information formed on only one side but also for a double-sided document having image information formed on both front and rear sides. It can be discharged without changing the page order. Although this embodiment is an example of a case where the apparatus is mounted on the upper part of a copying machine, the present invention can be applied to a scanner apparatus, a facsimile apparatus, and the like with a similar configuration.

【0011】原稿トレイ10は、画像情報を有する原稿
Pを積層して載置可能に構成された原稿載置部である。
この原稿トレイ10の底部には、原稿トレイ10上の原
稿Pの有無を検出する原稿セットセンサ11が設けられ
ている。
The document tray 10 is a document placing section configured to be able to stack and place documents P having image information.
At the bottom of the document tray 10, a document set sensor 11 for detecting the presence or absence of the document P on the document tray 10 is provided.

【0012】分離給紙部20は、原稿トレイ10上に載
置された原稿束から1枚ずつ原稿Pを取り込んで第1搬
送路31に給紙するものである。この分離給紙部20で
は、原稿トレイ10の上方に配置された前送りローラ2
3が、原稿トレイ10上の原稿Pを上搬送ローラ21お
よび下搬送ローラ22に向かって給紙する。そして、上
搬送ローラ21が原稿トレイ10上の原稿Pを送り出す
ように回転駆動する一方、上搬送ローラ21に接するよ
うに配置された下搬送ローラ22が、上搬送ローラ21
からの圧力に応じた回転抵抗を生じながら従動回転する
ことによって、原稿トレイ10上に載置された原稿束を
さばき、その最上位置にある1枚の原稿Pを分離して第
1搬送路31に給紙するようになっている。24は、第
1搬送路31に給紙された原稿Pの先端部および後端部
を検出するフィードセンサである。
The separation sheet feeding section 20 takes in the documents P one by one from the document bundle placed on the document tray 10 and feeds the documents P to the first transport path 31. In the separation sheet feeding unit 20, the forward feed roller 2 disposed above the document tray 10
3 feeds the document P on the document tray 10 toward the upper transport roller 21 and the lower transport roller 22. The upper transport roller 21 is driven to rotate so as to send out the document P on the document tray 10, while the lower transport roller 22 arranged to be in contact with the upper transport roller 21 is driven by the upper transport roller 21.
The document bundle placed on the document tray 10 is separated by the following rotation while generating a rotation resistance corresponding to the pressure from the document tray 10, and a single document P at the uppermost position is separated and the first transport path 31 is separated. Paper. Reference numeral 24 denotes a feed sensor that detects the leading end and the trailing end of the document P fed to the first transport path 31.

【0013】第1搬送路31は分離給紙部20から原稿
反転部60に至る搬送路である。この第1搬送路31上
には、レジストローラ対51,52が設けられており、
原稿Pの先端えを行うようになっている。このレジスト
ローラ51の下流側は、第1搬送路31から第5搬送路
35が分岐する第1分岐位置41となっており、この第
1分岐位置41に設けられた反転分岐レバー411によ
って、この第1分岐位置41に搬送されてくる原稿Pの
搬送経路を第1搬送路31の下流側または第5搬送路3
5のいずれかに切り替えることができるようになってい
る。なお、この第5搬送路35は片面原稿を搬送する際
に用いられる搬送路である。
The first transport path 31 is a transport path from the separation sheet feeding section 20 to the document reversing section 60. A pair of registration rollers 51 and 52 are provided on the first transport path 31.
The leading edge of the document P is set. The downstream side of the registration roller 51 is a first branch position 41 where the fifth transport path 35 branches from the first transport path 31, and the reverse branch lever 411 provided at the first branch position 41 causes the first branch position 41. The conveyance path of the document P conveyed to the first branch position 41 is set to the downstream side of the first conveyance path 31 or the fifth conveyance path 3
5 can be switched. The fifth transport path 35 is a transport path used for transporting a one-sided document.

【0014】原稿反転部60は、第1搬送路31から搬
入される原稿Pの搬送方向をスイッチバックさせて第2
搬送路32に排出することによって、搬送路上における
原稿Pの表裏面(装置外側に向かう面と内側に向かう
面)とを反転させるものである。この原稿反転部60
は、正逆両方向に回転駆動可能な反転ローラ61とこれ
に接する反転コロ62を備えており、反転ローラ61と
反転コロ62間の原稿Pを反転ローラ61の正逆両方向
の回転に応じて搬送して、原稿Pの搬送方向をスイッチ
バックさせることができるようになっている。
The document reversing section 60 switches the transport direction of the document P carried in from the first transport path 31 back to the second direction.
By discharging the document P to the transport path 32, the front and back surfaces of the document P on the transport path (the surface facing the outside and the surface facing the inside) are reversed. This document reversing unit 60
Is provided with a reversing roller 61 rotatable in both forward and reverse directions and a reversing roller 62 in contact with the reversing roller 61, and transports the document P between the reversing roller 61 and the reversing roller 62 according to the rotation of the reversing roller 61 in both the forward and reverse directions. As a result, the transport direction of the document P can be switched back.

【0015】また、反転コロ62は、反転コロ接離手段
63によって反転ローラ61に接離可能となっており、
反転コロ62が反転ローラ61から離れた状態において
は、反転ローラ61と反転コロ62間の原稿Pが上下に
抵抗なく移動しうるフリー状態として、原稿反転部60
から先行原稿を排出しながら同時に次原稿を原稿反転部
60に搬入することが可能となっている。
The reversing roller 62 can be moved toward and away from the reversing roller 61 by reversing roller contacting / separating means 63.
When the reversing roller 62 is separated from the reversing roller 61, the document reversing unit 60 is set to a free state in which the document P between the reversing roller 61 and the reversing roller 62 can move up and down without resistance.
, It is possible to simultaneously carry in the next original into the original reversing section 60 while discharging the preceding original.

【0016】これら反転ローラ61と反転コロ62間の
上側には、搬送方向がスイッチバックされる原稿Pが一
時的に搬入されるスイッチバック路65が、上記原稿ト
レイ10の上側に向かって延びるように設けられてい
る。このスイッチバック路65は上記分離給紙部20の
上方位置において、本装置本体の外方へ開口する開口部
66を有しており、長手の原稿Pのスイッチバックさせ
るときには、この開口部66から原稿Pの先端部分を一
時的に本装置本体の外方に排出するようになっている。
On the upper side between the reversing roller 61 and the reversing roller 62, a switchback path 65 into which the document P whose transport direction is to be switched back is temporarily loaded is extended toward the upper side of the document tray 10. It is provided in. The switchback path 65 has an opening 66 that opens to the outside of the main body of the apparatus at a position above the separation sheet feeding section 20. When the long original P is switched back, the switchback path 65 is opened through the opening 66. The leading end of the document P is temporarily discharged to the outside of the apparatus main body.

【0017】反転ローラ61、反転コロ62間の下側
は、上記第1搬送路31と第2搬送路32とが分岐する
第2分岐位置42となっている。この分岐位置42に
は、第1搬送路31の出口を狭めるように第2搬送路3
2下側の壁面を延ばした突出片421が設けられてお
り、この突出片421によって、この分岐位置42に第
1搬送路31から送られてきた原稿Pを原稿反転部60
へ搬送する一方、原稿反転部60から搬出されてきた原
稿Pは、第2搬送路32に搬送するようになっている。
本発明は、この突出片421の構成および作用効果にそ
の特徴を有するものであるが、この特徴部分については
後述する。
The lower side between the reversing roller 61 and the reversing roller 62 is a second branch position 42 where the first transport path 31 and the second transport path 32 branch. At the branch position 42, the second transport path 3 is set so as to narrow the exit of the first transport path 31.
2 is provided with a protruding piece 421 having an extended lower wall surface. The protruding piece 421 allows the document P sent from the first transport path 31 to the branch position 42 to be turned by the document reversing unit 60.
The original P conveyed from the original reversing unit 60 is conveyed to the second conveying path 32 while being conveyed to the original reversing unit 60.
The present invention has a feature in the configuration and operation and effect of the protruding piece 421, and this feature will be described later.

【0018】第2搬送路32は原稿反転部60から原稿
読取り部70に至る搬送路である。この第2搬送路32
上には、上搬送ローラ対53,54と下搬送ローラ対5
5,56が設けられており、第2搬送路32上の原稿P
を、原稿読取り部70の読取り位置71に搬送されるよ
うになっている。なお、片面原稿を搬送するための上記
第5搬送路35は、上搬送ローラ対53,54の上流側
からこの第2搬送路32に合流している。
The second transport path 32 is a transport path from the document reversing section 60 to the document reading section 70. This second transport path 32
The upper transport roller pair 53 and 54 and the lower transport roller pair 5
5 and 56, and a document P on the second transport path 32 is provided.
To the reading position 71 of the document reading section 70. The fifth transport path 35 for transporting the one-sided document merges into the second transport path 32 from the upstream side of the upper transport roller pair 53, 54.

【0019】また、下搬送ローラ55の上流位置にはタ
イミングセンサ72が設けられており、原稿Pの先端部
および後端部を検出して、原稿読取り部70における原
稿読取りのタイミングに供するようになっている。
A timing sensor 72 is provided at an upstream position of the lower conveying roller 55 so as to detect the leading edge and the trailing edge of the document P so that the document reading unit 70 can use the timing for reading the document. Has become.

【0020】原稿読取り部70は、複写機本体90上面
に設けられたコンタクトガラス73とその上方に配置さ
れた原稿ガイド74との間を読取り位置71として、こ
の読取り位置71を搬送される原稿Pの下側面の画像情
報を、いわゆる流し読み方式によって読み取るものであ
る。この原稿読取り部70は、図示しない複写機本体9
0内に、原稿Pに光を照射する露光ランプ、原稿Pから
の反射光を導光するレンズ系や反射ミラー、さらに導光
された反射光から画像情報を検出する画像読取機構部等
を備えている。
The original reading section 70 sets a reading position 71 between a contact glass 73 provided on the upper surface of the copying machine main body 90 and an original guide 74 disposed above the contact glass 73. The image information on the lower surface is read by a so-called flowing reading method. The original reading section 70 is provided with a copying machine body 9 (not shown).
Within 0, an exposure lamp for irradiating the original P with light, a lens system and a reflecting mirror for guiding the reflected light from the original P, and an image reading mechanism for detecting image information from the guided reflected light are provided. ing.

【0021】第3搬送路33は、原稿読取り部70から
排出トレイ80に至る搬送路である。この第3搬送路3
3には中間ローラ対57,58が設けられており、原稿
Pをさらに下流側に搬送するようになっている。この中
間ローラ対57,58の下流側は、第3搬送路33から
第4搬送路34が分岐する第3分岐位置43となってお
り、この第3分岐位置43に設けられた排出分岐レバー
431によって、原稿Pの搬送経路をこの第3分岐位置
43より下流側の第3搬送路33または第4搬送路34
のいずれかに切り替えることができるようになってい
る。なお、この第4搬送路34は、両面原稿の読取りを
行っている場合に、最初の面の読取りを終えた原稿に対
してさらに残りの面の読取りを行うべく、原稿Pを第1
搬送路31のレジストローラ対51,52上流側に戻す
ための搬送路である。両面原稿はこの第4搬送路34を
搬送されて再び原稿反転部60において搬送方向がスイ
ッチバックされることでその表裏面が反転されたのち、
残りの面の画像情報が読みとられ第3搬送路33に戻っ
てくる。
The third transport path 33 is a transport path from the document reading section 70 to the discharge tray 80. This third transport path 3
3 is provided with a pair of intermediate rollers 57 and 58 so as to transport the document P further downstream. The downstream side of the pair of intermediate rollers 57 and 58 is a third branch position 43 where the fourth transport path 34 branches from the third transport path 33, and a discharge branch lever 431 provided at the third branch position 43. The document P is conveyed to the third conveyance path 33 or the fourth conveyance path 34 downstream of the third branch position 43.
You can switch to either. Note that, when reading a double-sided document, the fourth conveyance path 34 transfers the document P to the first document in order to further read the remaining surface of the document after reading the first surface.
This is a conveyance path for returning to the upstream side of the pair of registration rollers 51 and 52 of the conveyance path 31. The double-sided document is conveyed through the fourth conveyance path 34, and after the conveyance direction is switched back in the document reversing unit 60 again, the front and back sides are reversed.
The image information of the remaining surface is read and returns to the third transport path 33.

【0022】排出トレイ80は、画像情報の読取りを終
えた原稿Pが排出される原稿排出部である。この排出ト
レイ80は、上記原稿トレイ10の下側に配置されてお
り、第3搬送経路33の出口設けられた排出ローラ対8
1,82から、片面の読取りを終えた片面原稿および両
面の読取りを終えた両面原稿が原稿トレイ10上のペー
ジ順どおりに排出されるようになっている。
The discharge tray 80 is a document discharge section for discharging the document P for which image information has been read. The discharge tray 80 is disposed below the document tray 10 and has a pair of discharge rollers 8 provided at the outlet of the third transport path 33.
1, 82, the one-sided document whose one side has been read and the two-sided document whose both sides have been read are discharged in the order of pages on the document tray 10.

【0023】次に、図2〜図7を参照しながら、本発明
を詳細に説明する。図2は原稿トレイから搬送ガイド部
への給紙状態を示す。原稿トレイ10上の原稿は給紙リ
フト板101の上昇に伴い前送りローラ23へ押圧さ
れ、最上面の1枚が搬送ローラ対102のニップに向か
って給紙される。図3は、メンテナンス時の中搬送ガイ
ド部の取り外し方法を図示したものである。リフト板1
01を外して後、上ガイド板104と前送りローラ23
軸受部を前後の側板(図示せず)から緩めて可動状態と
し、搬送上ローラ21の軸心を支点に矢印方向に開けて
原稿トレイ側の開口部を広げ、ガイド下ステー107の
突設片107aに固定されたビス107bと107cと
107dを外し中搬送ガイド部108を取り出せるよう
になっている。図4は前搬送ガイド部1a、中搬送ガイ
ド部1b、後搬送ガイド部1cからなる下搬送部全体の
平面図及び、搬送下ローラ部1dを取り出した状態を示
す。
Next, the present invention will be described in detail with reference to FIGS. FIG. 2 shows the state of paper feeding from the document tray to the conveyance guide unit. The document on the document tray 10 is pressed by the forward feed roller 23 as the sheet feed lift plate 101 rises, and the uppermost sheet is fed toward the nip of the transport roller pair 102. FIG. 3 illustrates a method of removing the middle conveyance guide portion during maintenance. Lift plate 1
01, the upper guide plate 104 and the forward feed roller 23
The bearing is loosened from the front and rear side plates (not shown) to make it movable, the opening is opened in the direction of the arrow with the axis of the upper conveying roller 21 as a fulcrum, and the opening on the document tray side is widened. The screws 107b, 107c, and 107d fixed to 107a are removed so that the middle conveyance guide 108 can be taken out. FIG. 4 is a plan view of the entire lower transport section including the front transport guide section 1a, the middle transport guide section 1b, and the rear transport guide section 1c, and shows a state where the transport lower roller section 1d is taken out.

【0024】図5、図6、図7によって中搬送ガイド部
の構成を詳述する。搬送下ローラ22は中心部から外面
にかけて中心軸109、トルクリミッター軸110、円
筒ゴム層111が形成されている。搬送下ガイド板11
2は112a、112b、112c、112dの4面に
折れ曲がっており、その内112dの裏面に固定された
取り付け板106に搬送下ローラ支持部が取り付けられ
ている。取り付け板106の両端部は、垂直に折れ曲が
った縦取り付け板113,114を有しておりまた、縦
取り付け板113、114には押圧バネ115の位置決
め用突起117a、117bが突出している。縦取り付
け板113,114には搬送下ローラ支持部材取り付け
用の軸ピン118、119がローラ軸方向に沿って、互
いに対向して取り付けられている。搬送下ローラ支持部
材125、126は中央部にローラ軸受部120、12
1を、搬送方向上流側部位にに、ローラ押圧バネ11
5、116位置決め用の突起122、123を、搬送方
向下流側部位に軸ピン118、119に嵌合するピン軸
受127、128を有している。また搬送ローラ支持部
材125は取り付け板106に向かって押圧バネ伸縮調
節片129を有している。搬送下ローラ支持部材12
5,126は、軸ピン118,119を中心に回動可能
であって、押圧バネ115,116によって上下搬送ロ
ーラ対のニップ方向に付勢されている。押圧バネ伸縮調
節片129は突設片132を有しており、取り付け板1
06から突設した規制片131と取り付け板の間でしか
移動できないので中ガイド部全体を取り外して搬送上ロ
ーラからの押圧が解除された状態でも、バネ自身は伸び
切らず一定の押圧を維持するので、支持部部材125と
押圧バネ115が容易には外れないようになっている。
取り付け板106は図示するように搬送ガイド板112
dに取り付けられ、上下搬送ローラ対の当接によって搬
送ニップを形成する。下搬送ローラ軸109の両端は軸
受120、121にて固定され、軸自身は自転できな
い。しかし下搬送ローラ22に摺接するように配置され
た上搬送ローラ21が原稿トレイ10上の原稿Pを送り
出すように回転駆動時に発生する摩擦抵抗によって、ト
ルクリミッタ軸110の回転抵抗によって円筒ゴム層1
11は従動回転できるようになっている。更に、ローラ
支持部材のローラ軸受120、121はローラニップ側
に開口部を設けているので、搬送下ガイドを機械本体か
ら取り外した状態では下搬送ローラを容易に取り外し可
能であって、また機械本体に装着され上下搬送ローラが
当接した状態では、ローラ軸が、軸受下方に付勢され上
搬送ローラが障害となって軸受開口部から軸が外れる恐
れも無い。
The structure of the middle conveyance guide will be described in detail with reference to FIGS. The transport lower roller 22 has a central shaft 109, a torque limiter shaft 110, and a cylindrical rubber layer 111 formed from the central portion to the outer surface. Lower conveying guide plate 11
Reference numeral 2 is bent on four surfaces 112a, 112b, 112c, and 112d, and a transport lower roller support portion is mounted on a mounting plate 106 fixed to the back surface of 112d. Both ends of the mounting plate 106 have vertical mounting plates 113 and 114 which are bent vertically, and positioning projections 117a and 117b of the pressing spring 115 protrude from the vertical mounting plates 113 and 114. Shaft pins 118 and 119 for attaching the lower roller support member are attached to the vertical attachment plates 113 and 114 so as to face each other along the roller axis direction. The transport lower roller support members 125 and 126 have roller bearing portions 120 and 12 at the center.
1 at the upstream side in the transport direction, with a roller pressing spring 11
The pin projections 127 and 128 which fit the shaft pins 118 and 119 on the downstream side in the transport direction are provided with the positioning projections 122 and 123. The transport roller support member 125 has a pressing spring expansion / contraction adjusting piece 129 toward the mounting plate 106. Lower transport roller support member 12
Reference numerals 5 and 126 are rotatable about shaft pins 118 and 119 and are urged by pressing springs 115 and 116 in the nip direction of the pair of upper and lower transport rollers. The pressing spring expansion / contraction adjusting piece 129 has a protruding piece 132, and the mounting plate 1
Since the spring can be moved only between the restricting piece 131 protruding from No. 06 and the mounting plate, the spring itself does not extend and maintains a constant pressing even when the pressing from the upper conveying roller is released by removing the entire middle guide portion. The support member 125 and the pressing spring 115 are not easily detached.
The mounting plate 106 is, as shown in FIG.
d, and forms a transport nip by abutment of a pair of upper and lower transport rollers. Both ends of the lower transport roller shaft 109 are fixed by bearings 120 and 121, and the shaft itself cannot rotate. However, due to the frictional resistance generated when the upper transporting roller 21, which is arranged to be in sliding contact with the lower transporting roller 22, sends out the original P on the original tray 10, due to the rotational resistance of the torque limiter shaft 110.
Numeral 11 can be driven to rotate. Further, since the roller bearings 120 and 121 of the roller support member have openings on the roller nip side, the lower transport roller can be easily removed when the transport lower guide is detached from the machine main body, and the machine main body can be removed. In the state in which the upper and lower transport rollers are in contact with each other, there is no possibility that the roller shaft is urged downward in the bearing and the upper transport roller becomes an obstacle and the shaft is displaced from the bearing opening.

【0025】[0025]

【発明の効果】搬送下ガイド部の原稿読取装置本体から
の取り外しが容易になり、搬送下ガイドと搬送下ローラ
を一体的に取り外した後で、搬送下ローラを搬送下ガイ
ドから取り外すことが容易となり、部品メンテ、交換が
容易となった。ローラ軸支持部材一端部と搬送下ガイド
板の位置決め用突起に押えバネを引っかけた状態で、搬
送下ガイドと下ローラを一体的に着脱できるのでバネの
破損及び紛失が無い。また、搬送ガイドに支持部材を取
り付けているため保持部材の上部が開口していてもこれ
らの一体物を本体に取り付ける際にバラバラにならな
い。最後に、図8に下搬送ガイド板が一体化された従来
技術を示す。
According to the present invention, it is easy to remove the lower conveying guide from the original reading apparatus main body, and it is easy to remove the lower conveying roller from the lower conveying guide after integrally removing the lower conveying guide and the lower conveying roller. It became easy to maintain and replace parts. The transport lower guide and the lower roller can be integrally attached and detached in a state where the pressing spring is hooked on one end of the roller shaft support member and the positioning projection of the transport lower guide plate, so that the spring is not damaged or lost. In addition, since the support member is attached to the transport guide, even when the upper portion of the holding member is open, it does not fall apart when these integral parts are attached to the main body. Finally, FIG. 8 shows a conventional technique in which the lower transport guide plate is integrated.

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

【図1】本発明の用紙搬送装置の1実施形態を示す概略
図である。
FIG. 1 is a schematic diagram showing one embodiment of a paper transport device of the present invention.

【図2】図2は原稿トレイから搬送ガイド部への給紙状
態を示す。
FIG. 2 illustrates a state in which paper is fed from a document tray to a conveyance guide unit.

【図3】図3は、メンテナンス時の中搬送ガイド部の取
り外し方法を図示したものである。
FIG. 3 illustrates a method of removing a middle conveyance guide unit during maintenance.

【図4】図4は下搬送部全体の平面図である。FIG. 4 is a plan view of the entire lower transport unit.

【図5】図5は中搬送ガイド部から下搬送ガイド板を除
いた部分の平面図であって、搬送下ローラの支持構造を
を示す。
FIG. 5 is a plan view of a portion where a lower conveyance guide plate is removed from a middle conveyance guide portion, and shows a support structure of a conveyance lower roller.

【図6】図6は中搬送ガイド部から下搬送ガイド板、縦
取り付け板を除いた部分の左側面図であって、搬送下ロ
ーラの支持構造をを示す。
FIG. 6 is a left side view of a portion where a lower transport guide plate and a vertical mounting plate are removed from a middle transport guide portion, and shows a support structure of a transport lower roller.

【図7】図7は中搬送ガイド部から下搬送ガイド板を除
いた部分の正面図である。
FIG. 7 is a front view of a portion where a lower conveyance guide plate is removed from a middle conveyance guide portion.

【図8】下搬送ガイド板が一体化された従来技術を示
す。
FIG. 8 shows a conventional technique in which a lower conveyance guide plate is integrated.

【符号の説明】[Explanation of symbols]

10 原稿トレイ 11 原稿セットセンサ 20 分離給紙部 21 搬送上ローラ 22 搬送下ローラ 23 前送りローラ 24 フィードセンサ 101 リフト板 102 搬送ローラ対 104 上ガイド板 106 取り付け板 107 ガイド下ステー 107a 突設片 108 中搬送ガイド部 109 中心軸 110 トルクリミッター軸 111 円筒ゴム層 112 搬送下ガイド板 113 縦取り付け板(左) 114 縦取り付け板(右) 115 押圧バネ(左) 116 押圧バネ(右) 118 軸ピン(左) 119 軸ピン(右) 120 ローラ軸受部(左) 121 ローラ軸受部(右) 1 DESCRIPTION OF SYMBOLS 10 Document tray 11 Document set sensor 20 Separation feeding part 21 Conveying upper roller 22 Conveying lower roller 23 Forward roller 24 Feed sensor 101 Lift plate 102 Conveying roller pair 104 Upper guide plate 106 Mounting plate 107 Guide lower stay 107a Projecting piece 108 Middle conveyance guide 109 Central axis 110 Torque limiter shaft 111 Cylindrical rubber layer 112 Lower conveyance guide plate 113 Vertical mounting plate (left) 114 Vertical mounting plate (right) 115 Press spring (left) 116 Press spring (right) 118 Shaft pin ( Left) 119 Shaft pin (right) 120 Roller bearing (left) 121 Roller bearing (right) 1

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】搬送上ローラと搬送下ローラからなる搬送
ローラと、搬送上ガイドと搬送下ガイドからなる搬送ガ
イドとを配設して形成される搬送路に沿って用紙を搬送
する用紙搬送装置において、下搬送ガイド部が搬送ロー
ラ軸方向に前搬送ガイド部、中搬送ガイド部、後搬送ガ
イド部の3部分に分割され、搬送下ローラ軸両端の支持
部が中搬送ガイド部に取り付けられていることを特徴と
する用紙搬送装置。
1. A sheet transport device for transporting a sheet along a transport path formed by disposing a transport roller including an upper transport roller and a lower transport roller, and a transport guide including an upper transport guide and a lower transport guide. , The lower transport guide portion is divided into three portions of a front transport guide portion, a middle transport guide portion, and a rear transport guide portion in the transport roller axial direction, and the support portions at both ends of the transport lower roller shaft are attached to the middle transport guide portion. A sheet conveying device.
【請求項2】該支持部における該搬送下ローラ軸の軸受
部が、搬送上下ローラのニップ方向に開口していること
を特徴とする請求項1記載の用紙搬送装置。
2. The sheet conveying apparatus according to claim 1, wherein a bearing portion of the lower conveying shaft of the supporting portion is opened in a nip direction of the upper and lower conveying rollers.
【請求項3】該支持部における一端部が、中搬送ガイド
部から垂直に配設された縦取り付け板に位置した支点に
回動自在に取り付けられるとともに、該搬送下ローラ軸
両端の各支持部の他端部と搬送ガイドの中間にバネが取
り付けられ、バネの押圧力によって搬送下ローラが搬送
上ローラに付勢されていることを特徴とする請求項2記
載の用紙搬送装置。
3. One end of the support portion is rotatably attached to a fulcrum located on a vertical mounting plate vertically disposed from the middle conveyance guide portion, and each of the support portions at both ends of the conveyance lower roller shaft. 3. The sheet conveying device according to claim 2, wherein a spring is mounted between the other end of the sheet conveying member and the conveying guide, and the lower conveying roller is urged against the upper conveying roller by a pressing force of the spring.
JP2000052182A 2000-02-23 2000-02-23 Paper transport device Expired - Fee Related JP3638496B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000052182A JP3638496B2 (en) 2000-02-23 2000-02-23 Paper transport device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000052182A JP3638496B2 (en) 2000-02-23 2000-02-23 Paper transport device

Publications (2)

Publication Number Publication Date
JP2001233469A true JP2001233469A (en) 2001-08-28
JP3638496B2 JP3638496B2 (en) 2005-04-13

Family

ID=18573740

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000052182A Expired - Fee Related JP3638496B2 (en) 2000-02-23 2000-02-23 Paper transport device

Country Status (1)

Country Link
JP (1) JP3638496B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005074247A1 (en) * 2004-01-23 2005-08-11 Eastman Kodak Company Scanner with removable document guides

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005074247A1 (en) * 2004-01-23 2005-08-11 Eastman Kodak Company Scanner with removable document guides
US7428084B2 (en) 2004-01-23 2008-09-23 Eastman Kodak Company Scanner with removable image guides

Also Published As

Publication number Publication date
JP3638496B2 (en) 2005-04-13

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