JPS62105839A - Sheet transport device - Google Patents

Sheet transport device

Info

Publication number
JPS62105839A
JPS62105839A JP24594285A JP24594285A JPS62105839A JP S62105839 A JPS62105839 A JP S62105839A JP 24594285 A JP24594285 A JP 24594285A JP 24594285 A JP24594285 A JP 24594285A JP S62105839 A JPS62105839 A JP S62105839A
Authority
JP
Japan
Prior art keywords
belt
sheet
paper
roller
side plate
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
JP24594285A
Other languages
Japanese (ja)
Inventor
Kimiaki Hayakawa
早川 公昭
Noriyoshi Ueda
上田 典由
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP24594285A priority Critical patent/JPS62105839A/en
Publication of JPS62105839A publication Critical patent/JPS62105839A/en
Pending legal-status Critical Current

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  • Drives For Endless Conveyors (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)

Abstract

PURPOSE:To enable a spring to be easily removably hooked in interchanging transport belts by providing a hook to be removably hooked on at least one end of belt tension spring hooks. CONSTITUTION:Transport belts 31 repeating the transport of an original sheet are properly interchanged. In the interchange, belt tension springs 40, 41 respectively disposed between projections 35a, 36a of front and rear side plates 35, 36 and bends 37a, 39a of front and rear auxiliary side plates 37, 39 are removed to release the tension of the transport belt 31. Screws 77 fixing the bend 35b of front side plate 35 and an armor cover 75 are removed, and then bend 36b of rear side plate 36 fixed to the armor cover 75 by screws 79 is deformed so that an opened gap is formed between the armor cover 75 and the front side plate 35. The transport belt 31 trained over a drive roller 32 and a driven roller 33 through the gap has the front side plate 35 put inside to be drawn outward.

Description

【発明の詳細な説明】 (イ)産業上の利用分野 本発明は、複写機、情報記録装置、レーザービームプリ
ンタ等の画像形成装置、就中原稿送り装置に用いて好適
なシート榮送装置に係り、詳しくは無端ベルトを備えた
シート搬送装置に関ずろ。
DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention is directed to a sheet feeding device suitable for use in an image forming device such as a copying machine, an information recording device, a laser beam printer, and especially a document feeding device. More specifically, it relates to a sheet conveying device equipped with an endless belt.

(ロ)従来の技術 従来、複写機等の画像形成装置のシート搬送装置、特に
原稿シートを搬送するシート搬送装置は、全幅でエンド
レスの原m搬送ベルトを備えており、該ベル!・は駆動
ローラ及び従動ローラに懸架されている。また、該装置
に用いられる原稿は、鉛筆書き原稿、タイプ原稿及びコ
ピー原稿等あらゆる種類の原稿があり、原稿搬送ベルト
の汚れや傷みが早く、度々のベルト交換が必要である。
(B) Prior Art Conventionally, a sheet conveyance device of an image forming apparatus such as a copying machine, particularly a sheet conveyance device for conveying original sheets, is equipped with a full-width, endless original conveyance belt.・is suspended between a driving roller and a driven roller. Further, there are various types of originals used in this apparatus, such as pencil-written originals, typed originals, and copied originals, and the original transport belt becomes dirty and damaged quickly, requiring frequent belt replacement.

そして、該原tlIits送ベルトは、通常ベル!・テ
ンン盲ンばねによって張力を与えられており、該ベルト
の交換時には装置の構造上該ベルトテンシ鵞ンばねが取
り外されろ必要がある。
And the original tlIits feeding belt is usually a bell! - Tension is applied by a tension spring, and when replacing the belt, it is necessary to remove the belt tension spring due to the structure of the device.

←→ 発明が解決しようとする問題点 ところで、従来ベルトテンシロンばねが取9外される際
、該ばねのフックがラジオペシチ或いは専用の工具によ
っ÷取り外されていたが、該フックと該フックを係合す
る部材との空間が少なく作業性が悪くて、無理をしてフ
ックや係合する部材が変形したり、破損したりする不都
合がしばしば生じた。
←→ Problems to be Solved by the Invention By the way, conventionally, when a belt tensilon spring is removed, the hook of the spring is removed using a radio stick or a special tool. There is little space between the mating members and the workability is poor, and the hooks and the mating members often become deformed or damaged due to excessive force.

(ハ)問題を解決するための手段 本発明は、上述問題点を解消することを目的とするもの
であって、ベルトテンシアンばねのフックの少なくとも
一方の先に掛け外し操作用のフックを設けたことを特徴
とするものである。
(C) Means for Solving the Problem The present invention aims to solve the above-mentioned problems, and includes a hook for hooking and unhooking the belt tensile spring at the end of at least one of the hooks. It is characterized by:

(ホ) 作用 上述構成に基づき、搬送ベルト交換の際に、ベルトテン
シアンばねの掛け外し操作用のフックに工具が掛けられ
て、該ベルトテンシアンばれは容易に掛け外される。
(E) Effect Based on the above-described structure, when replacing the conveyor belt, a tool is hooked to the hook for operating the belt tension spring, and the belt tension spring is easily hooked and removed.

(へ)実施例 以下、図面に沿って本発明の実施例について説明する。(f) Example Embodiments of the present invention will be described below along with the drawings.

本実施例のシート搬送部@[Jは、第2図に示すように
、複写機本体1の上方に配置されていて、該複写機本体
1の上部に設けられたプラテン2の所定位置に原稿シー
I・を搬送・載置する原稿搬送装置に係る。
As shown in FIG. 2, the sheet conveyance unit @J in this embodiment is arranged above the copying machine main body 1, and the document is placed at a predetermined position on the platen 2 provided at the top of the copying machine main body 1. The present invention relates to a document conveying device that conveys and places a sheet I.

ところで、該複写機本体1は略々中央部に矢印入方向に
回転する感光ドラム3を有すると共に、上部には透明部
材からなるト記ゾラテシ2を備えており、まt−該プラ
テン2の下刃には照明ランプ5、複数の反射ミラー6.
7,9,10が設けられ、更に結像レンズ11が配設さ
れている。そして、上記プラテン2上に載置された原隣
の投影像はこれら照明ランプ5、複数の反射ミラー6.
7゜9.10.結像レンズ11によって、矢印入方向に
回転する感光ドラム3上にスリット露光されろ。
By the way, the main body 1 of the copying machine has a photosensitive drum 3 approximately in the center that rotates in the direction of the arrow, and is also provided with a platen 2 made of a transparent member at the top. The blade has an illumination lamp 5 and a plurality of reflective mirrors 6.
7, 9, and 10 are provided, and an imaging lens 11 is further provided. The projected image of the original placed on the platen 2 is the illumination lamp 5, a plurality of reflecting mirrors 6.
7゜9.10. Slit exposure is performed by the imaging lens 11 onto the photosensitive drum 3 rotating in the direction indicated by the arrow.

また、該感光ドラム3近傍(ζは′IIf電器12、現
像器13、転写器15及びクリーニング部1Gが配設さ
れており、原稿像がスリット露光されるに先立って、感
光ドラム3が帯電器12によって一様に帯電され−Cい
て、原稿像がスリット露光されろと感光ドラム3上に静
電潜像が形成され、更に該静電潜像が現像器13で頭像
化される。一方、複写機本体1下部には転写材17を収
納する給&[11−レイ19、給紙ローラ20、レジス
トローラ21゜搬送部22、定M器23、排出ローラ2
5及び排出トレイ26が設けられており、転写材17ば
、給紙ローラ20及び感光ドラム3上の画像と同期して
回動するレジストローラ21によって該ドラム3に1軒
送されて、転写器15にて該画像全転写され、更に搬送
部22によって定着#23にm送される3、そして、画
像を転写された転写材17は定着器23にて該画像を定
着され、排出ローラ25によって排出1− Lイ26上
に排出される。
Further, an electric device 12, a developing device 13, a transfer device 15, and a cleaning section 1G are arranged near the photosensitive drum 3 (ζ is 'IIf), and before the original image is exposed to the slit, the photosensitive drum 3 is connected to a charging device. When the document image is uniformly charged by the photosensitive drum 12 and subjected to slit exposure, an electrostatic latent image is formed on the photosensitive drum 3, and the electrostatic latent image is further converted into a head image by the developing device 13.On the other hand, At the bottom of the copying machine main body 1, there are a feed & [11-ray 19 for storing the transfer material 17, a paper feed roller 20, a registration roller 21, a conveying section 22, a measuring device 23, and a discharge roller 2.
A transfer material 17 is fed to the drum 3 by a paper feed roller 20 and a registration roller 21 that rotates in synchronization with the image on the photosensitive drum 3, and then transferred to the transfer device. The entire image is transferred at step 15, and further transported to fixing #23 by the conveyance section 22, and the transfer material 17 onto which the image has been transferred has the image fixed at the fixing device 23, and then transferred by the discharge roller 25. Discharge 1 - Discharged onto L-26.

一方、ンートm送装置Uは、第2図及び第3図に示すよ
うに、上記プラテン2の上面全幅に臨んで、ニードレス
の搬送ベルト31を有すると共に、該搬送ベルト31を
巻回、駆動する駆動ローラ32及び該搬送ベルト31を
巻回して駆動する従動ローラ33を備^ている。そして
、該駆動ローラ32は、前側板35及び後側板3Gにそ
れぞれ前側軸部32a及び後側軸部32bを回転自在に
支持され、まt:該従動ローラ33は、該前側板35及
び後(ll’J板3Gにそれぞれスライドするように配
設されt=前補助側板37及び後補助側板:39にそれ
ぞれ前側軸部33a及び後側軸部33bを回転自在に支
持されている。更に、これら前後補助側板37.39の
一側端にはそれぞれ折曲部37a。
On the other hand, as shown in FIGS. 2 and 3, the transport device U has a needleless transport belt 31 facing the entire width of the upper surface of the platen 2, and winds and drives the transport belt 31. A driving roller 32 and a driven roller 33 around which the conveyor belt 31 is wound and driven are provided. The driving roller 32 is rotatably supported by the front side plate 35 and the rear side plate 3G at the front side shaft part 32a and the rear side shaft part 32b, respectively. They are arranged to slide on the ll'J plate 3G, and are rotatably supported by a front auxiliary side plate 37 and a rear auxiliary side plate 39, respectively, with a front shaft part 33a and a rear shaft part 33b, respectively. Each of the front and rear auxiliary side plates 37 and 39 has a bent portion 37a at one side end.

39aが形成され、これら析曲部37a、39aと、@
後6!J板35,3Gに形成、)わた突起部35a、3
6aとの間にはそれぞれベルトタシシ1シばね40,4
1が配設されており、これらベルトテンシアンばね40
,41は(第1図参照)、先端部に先端フック40a、
41aが、中央部には中央フック40b、41bが形成
されており、該中央フック40b、41bから更に伸び
てtnけ外し操作用の後端フック40e、41eが形成
され7ている。そして、ベルトテンシ)ンばね40.4
1の先端フック40a、41aが該折曲部37a。
39a is formed, and these analysis parts 37a, 39a and @
6 more to go! Formed on J plate 35, 3G,) cotton protrusion 35a, 3
6a, there are 1 belt spring 40 and 4 springs, respectively.
1 are arranged, and these belt tensian springs 40
, 41 (see Fig. 1) has a tip hook 40a at the tip,
41a, central hooks 40b, 41b are formed in the central portion, and rear end hooks 40e, 41e are formed extending further from the central hooks 40b, 41b for tn removal operation. And belt tension spring 40.4
The tip hooks 40a and 41a of No. 1 are the bent portions 37a.

39aにそれぞれ係合し、まt:中央フック40b#4
1bが前記突起部35a、36aにそれぞれ係合して、
上記搬送ベルト31に張力を与A、ろ。史に、後端フッ
ク40e、41eは、該べ/l・トテシシ盲ンばね40
,41を上記折曲部37a、398及び突起部:(5a
、  36 aL:ilけ舛−4際に工具がFGけられ
て、作業を容易にする。また、上記駆動ロー ラ32に
臨んで、給紙トレイ42を備えた給紙部43が配設され
ており、すfに」−記従!1ilJローラ33に臨んで
、緋mbレイ45を備えた排紙部46が配置されている
、そして、該給紙部43の給紙トトイ42には給紙ガイ
ド47が設けられており、該給紙ガイド47は、第4図
(a)に示すように、上絵紙ガイド47a1下給紙ガイ
ド47b1基準ガイド47cが一体に形成され、更に透
明部材、例えばアクリル、ボリヵーボネ−1−、透明A
BS樹脂等で構成されていて、原稿シートを滑らかに誘
導し、また該給紙ガイ1ζに孔をあけることなく光セン
サで原稿シートを検知し得る。即ち、従来の給紙ガイド
47′には、第4図(b)ないしくd)に示すように、
上絵紙ガイド47a′、下給紙ガイド47b′、!11
M5tfイド47c′が別部材で構成されていて、原稿
シートP′が各部材間の隙間に入り込んで該原稿シート
P′を傷めなり、またセンサ月の切欠きhを設けなけれ
ばならず、該切欠きhに原稿シートP′が引掛かり該凍
傷シートP′を傷めたりする不具合があったが、・本給
紙ガイドでこれら不具合を解消し得る。そして、第2図
および第3図に示すように、給紙トレイ42には、斜行
ロ一つ軸49に[MJ定されIこ↑〕)送0″−:′)
50が6己設され、史CI:駆動11−・う32(こ臨
/5.てIik f;’3ストッパ51,51が設けら
れでおり、該1ζj晴:へトソバ51.51はソしノイ
ド52に接続していて、該ソレノイド52の作動により
原稿シー・1・を通過させ又は停止する。また、給紙ガ
イド47に臨んで透過ヤの給紙部上ニア号S、が設けら
れており、該給紙部センサS、は原稿シートの有無を検
知する。
39a respectively, and central hook 40b #4.
1b engages with the projections 35a and 36a, respectively,
Apply tension to the conveyor belt 31 A, ro. Historically, the rear end hooks 40e and 41e are attached to the corresponding base/l.
, 41 to the bent portions 37a, 398 and projections: (5a
, 36 aL: When cutting, the tool is cut off by FG to make the work easier. Further, facing the drive roller 32, a paper feed section 43 equipped with a paper feed tray 42 is provided. Facing the 1ilJ roller 33, a paper ejecting section 46 equipped with a scarlet mbray 45 is arranged, and a paper feeding guide 47 is provided on the paper feeding toy 42 of the paper feeding section 43. As shown in FIG. 4(a), the paper guide 47 is integrally formed with an upper paper guide 47a, a lower paper feed guide 47b, and a reference guide 47c, and is further made of a transparent material such as acrylic, polycarbonate, or transparent A.
It is made of BS resin or the like, allows the document sheet to be guided smoothly, and the document sheet can be detected by an optical sensor without making a hole in the paper feed guide 1ζ. That is, as shown in FIGS. 4(b) to 4(d), the conventional paper feed guide 47' has
Upper paper guide 47a', lower paper feed guide 47b',! 11
Since the M5tf guide 47c' is constituted by a separate member, the original sheet P' will get into the gap between each member and damage the original sheet P', and a notch h must be provided for the sensor month. There was a problem that the original sheet P' got caught in the notch h and the frostbitten sheet P' was damaged, but these problems can be solved by this paper feeding guide. As shown in FIG. 2 and FIG.
50 are installed six times, and the history CI: Drive 11-・U32 (this time/5.'3 stoppers 51, 51 are provided, and the 1ζj clear: Hetosoba 51.51 is so The solenoid 52 is connected to the solenoid 52, and the operation of the solenoid 52 causes the document sheet 1 to pass through or to stop.Furthermore, facing the paper feed guide 47, an upper near side S of the paper feed section of the transmission layer is provided. The paper feed section sensor S detects the presence or absence of a document sheet.

そして、上記斜送ロー”う軸49にば斜送ローラブー・
す53が設けられており、また駆動ロー・う32の後側
軸部32bには駆動ローラブー ’J 55が配設され
、これら両ブ・−リ53,55には斜送べ小トbIが巻
回されている。また、駆動ローラ32の後側軸部32b
には更にタイミングベルト−J −”;57が設けらね
ており、モータ59の出力軸59aに配設さf]ている
プーリ60との間にタイミングベルトb が巻回されて
いる。
Then, on the skew feed roller shaft 49, the skew feed roller boot
A drive roller boot 53 is provided on the rear shaft portion 32b of the drive row 32, and a small diagonal feeding roller bI is provided on both of these rollers 53 and 55. It is wrapped. Further, the rear shaft portion 32b of the drive roller 32
Further, a timing belt 57 is provided on the output shaft 59a of the motor 59, and a timing belt b is wound between the pulley 60 and the pulley 60 disposed on the output shaft 59a of the motor 59.

なお、第2図における符号61は押:、t J口を小し
、該押丸フロロ1は搬送ベルト31の内側にあって該搬
送ベルト31をプラテン2に抑圧する。
Note that the reference numeral 61 in FIG.

そして、上記排紙部46には、第5図に詳示すように、
従動ローラ33に臨んで排紙揺動板62が設けられてお
り、該揺動板62の両側端部にはそれぞれ突片62a、
62bが形成されていて、該突片62 a、 62 b
が上記前後両側板35,36にそれぞれ設けられた揺動
板支持軸63,65に係合して、該排紙揺動板62が揺
動自在に支持される。そして、該排紙揺動板62には従
動ローラ33に接触して複数の揺動コロ66・・が回転
自在に配設されており、更に上記揺動板支持軸63゜6
5と突片62m、62bとの係合部に揺動ばね67.6
9がそれぞれ配設されていて、該揺動ばね67.69の
一端67a、69aが前後側板35.36にそれぞれ係
止し、また他端67b、69bが該排紙揺動板62に当
接していて、該排紙揺動板62は、揺動コロ66・・・
が従動ローラ33に常に対接するように付勢され、従動
ローラ33の移動に追従して、該揺動板62と従動ロー
ラ33との間に常に適正な排紙パス70を形成する。
As shown in detail in FIG. 5, the paper discharge section 46 has
A paper discharge swing plate 62 is provided facing the driven roller 33, and protrusions 62a and 62a are provided at both ends of the swing plate 62, respectively.
62b are formed, and the projecting pieces 62a, 62b
engages with rocking plate support shafts 63 and 65 provided on the front and rear side plates 35 and 36, respectively, so that the discharge rocking plate 62 is swingably supported. A plurality of swinging rollers 66 are rotatably disposed on the paper discharge swinging plate 62 in contact with the driven roller 33, and the swinging plate support shaft 63°6
A rocking spring 67.6 is attached to the engagement portion between 5 and the protruding pieces 62m and 62b.
One end 67a, 69a of the swing spring 67.69 is respectively locked to the front and rear side plates 35,36, and the other end 67b, 69b is in contact with the paper discharge swing plate 62. The paper discharge rocking plate 62 has rocking rollers 66...
is urged so as to always be in contact with the driven roller 33, and follows the movement of the driven roller 33 to always form a proper paper ejection path 70 between the swing plate 62 and the driven roller 33.

また、該従動ローラ33に近接して上方に立上がる排紙
ガイ1ニア1が設けられており、該排紙がイド71の上
端部には排紙ローラ72が配設されている。更に、該排
紙がイド71の下端部にCよ排紙センサS2が配設され
ており (第2図参照)、またCれらtNmts46を
覆うようにして!JI−紙カバー 73が設けられてい
る。
Further, a paper discharge guide 1 near 1 is provided which stands upwardly in proximity to the driven roller 33, and a paper discharge roller 72 is disposed at the upper end of the ID 71 from which the paper is discharged. Furthermore, a paper discharge sensor S2 is disposed at the lower end of the paper id 71 (see FIG. 2), and the paper discharge sensor S2 is arranged so as to cover the C sensor 46! A JI-paper cover 73 is provided.

一方、上記駆動ローラ32は、第6図に詳示−轡るよう
に、無端の搬送ベル1−31を巻回すると共に、その両
側端の軸部32u、32b/i:それぞれ前後両側板3
5.36に支持されている9、・こしで、該前側板35
は、その外周の長さが該無端の搬送ベルトの内周の長さ
より短く構成されており、また該前後両側板35.36
はスデー76にて固定されて一体に連結されている。そ
して、該niI側板35の」二部には折曲部35bが形
成されていて、複写機本体1に取付けられている外装カ
バー・75にMJj管曲部35bがビス77に゛CC取
外177m能能取付(ブられてJ5す、ユt:該後側板
36の−に部にti hIr曲部36bが形成されCい
て、該外B Jjバー75にビス79にて取付けられて
いて、該析曲部36bは更に所定量折り曲げられる等変
形可能に構成されている。更に、上記ステー76の後側
板36取付側にはステー折曲部76aが形成され−Cい
ろ。
On the other hand, the drive roller 32, as shown in detail in FIG.
5. 9 supported by 36, the front plate 35
The length of the outer circumference is shorter than the length of the inner circumference of the endless conveyor belt, and the front and rear side plates 35, 36
are fixed and connected together by a frame 76. A bent part 35b is formed in the second part of the niI side plate 35, and the MJJ pipe bent part 35b is attached to the screw 77 on the exterior cover 75 attached to the copying machine main body 1. Functional mounting: A curved portion 36b is formed on the - side of the rear side plate 36, and is attached to the outer bar 75 with screws 79. The bending portion 36b is further deformable by being bent by a predetermined amount.Furthermore, a stay bending portion 76a is formed on the rear plate 36 mounting side of the stay 76. -C color.

なお、無端のtr>送ベルI・31を巻回ずろ上記従動
ロー−−′)33は上記前補助側板37及び後補助側板
39を介1.て上述構成の前後側板35,36に支持さ
れている。
Incidentally, the endless tr>transmission bell I/31 is wound around the driven row--') 33 via the front auxiliary side plate 37 and the rear auxiliary side plate 39. and is supported by the front and rear side plates 35 and 36 having the above-mentioned configuration.

本実施例は以−ヒのような構成からなるので、給紙トシ
イ42上に載置された原稿シー!・の先端が給紙if−
?ド47に挿入されろと、給紙部センサS。
This embodiment has the following configuration.・The tip of the paper is fed if-
? The paper feed section sensor S indicates that the sheet should be inserted into the paper feed section 47.

が該原稿シーI、を検知する。すると、8−々59が回
転17て駆動ローラ32に巻回されている搬送ベルト3
1が回転し、更に斜送ローラ50が回転して、原稿シ・
−1・は原稿ス1−・ソバ5】に搬送されろ。この際、
原稿シートζよ斜送ローラ50により基準)fイjζ4
7CII:治って搬送・整合され、予め設定した該原稿
シートの整合に必要なりロック数だけモータ59が回転
するとソレノイド52が作11シて、原稿ストッパ51
が該原稿シートを通過させる。、そこで、原稿シー・1
・は斜送ローラ50及び搬送ベルト31によってプラテ
ン2上を搬送され、該原稿シートの先端がプラテン2を
通過して排紙ガイド71に入り排紙センサS2に検知ざ
スするとモータ59が逆回転する。その際、該原稿シー
トの先端がモータ59のイナー・シャにより排紙センサ
S から少しif!i /シだ位置で搬送方向を変λら
11、該原wIiシートは、給紙部46方向に逆送され
る、そして、該原稿シートは、その先端が排紙センサS
、から抜けた時から該センサS2からプラテン2の所定
位置までの距離に相当する予め設定されたクロック数だ
け逆送されて、プラテン2の所定位置に停止・、mvさ
れる。そこで、複写機本体1の複写作動が開始され、上
述したようにプラテン2上に載置された原稿シートの原
稿1象が転写材17に転写され、排出トレイ26上に排
出されて連写処理が終了する。ついで、原稿シート排出
信号を受けたモータ59が回転し、飛送ベルI・31が
回転して、プラテン2上の原稿シートはIJIREI−
レイ45に向けて搬送され、排紙揺動板62に配設され
ている揺1コロ6G ・と搬送ベルト31とに挟持され
て排紙パス70に至る。その際、該排紙揺動板62ば、
揺動ばね67.69によって揺動コロ33が従動ローラ
33に対接するように付勢され、該従動ローラ33の移
動に追従し、該従動ローラ33に巻回された搬送ベルト
31との間に常に適正な間隔を確保した排紙パス70を
形成しており、該原稿シートは従動ローラ33の位置の
変化にも拘わらす該排紙揺動板62に案内されて、適正
に該排紙パス70を通過ずろ。更に、該原f^シートは
、排紙ガイド71に誘導され、該排紙ガイドア1通過の
際に排紙センサS2によっCその通過を検知されて、排
紙ローラ72によって排紙トレイ45上に排出される。
detects the document sheet I. Then, 8-59 rotate 17 and the conveyor belt 3 wound around the drive roller 32
1 rotates, and the oblique feed roller 50 further rotates to feed the document sheet.
-1. should be transported to the original source 1-.Soba 5]. On this occasion,
Original sheet ζ (based on oblique feed roller 50) f i j ζ 4
7CII: When the original sheet is cured, transported and aligned, and the motor 59 rotates by the number of locks necessary for alignment of the original sheet set in advance, the solenoid 52 is activated and the original stopper 51 is rotated.
passes the original sheet. , so the manuscript sea 1
- is transported over the platen 2 by the oblique feed roller 50 and the transport belt 31, and when the leading edge of the original sheet passes through the platen 2, enters the paper ejection guide 71, and is detected by the paper ejection sensor S2, the motor 59 rotates in the reverse direction. do. At this time, the leading edge of the original sheet is slightly moved from the paper discharge sensor S by the inertia of the motor 59 if! The conveyance direction is changed from λ at the i/edge position 11, and the original wIi sheet is reversely conveyed in the direction of the paper feed section 46, and the leading edge of the original sheet is moved to the paper discharge sensor S.
, the sensor S2 is sent backward by a preset number of clocks corresponding to the distance from the sensor S2 to a predetermined position on the platen 2, and is stopped at a predetermined position on the platen 2. Then, the copying operation of the copying machine main body 1 is started, and as described above, the original image of the original sheet placed on the platen 2 is transferred onto the transfer material 17, and is ejected onto the ejection tray 26 for continuous copying processing. ends. Then, the motor 59 that receives the original sheet discharge signal rotates, the transport bell I.31 rotates, and the original sheet on the platen 2 is transferred to the IJIREI-
The sheet is conveyed toward the tray 45, and is held between the roller 6G disposed on the sheet discharge swing plate 62 and the conveyor belt 31, and reaches the sheet discharge path 70. At that time, the paper discharge swing plate 62b,
The swinging roller 33 is urged by the swinging springs 67 and 69 so as to come into contact with the driven roller 33, follows the movement of the driven roller 33, and creates a gap between the swinging roller 33 and the conveyor belt 31 wound around the driven roller 33. A paper ejection path 70 is always formed with appropriate spacing, and the document sheet is guided by the paper ejection swing plate 62 and properly follows the paper ejection path despite changes in the position of the driven roller 33. Just passed 70. Further, the original f^ sheet is guided to the paper ejection guide 71, and when it passes through the paper ejection guide 1, the passage is detected by the paper ejection sensor S2, and the sheet is transferred onto the paper ejection tray 45 by the paper ejection roller 72. is discharged.

そして、上述原稿シー!・の搬送を繰返した搬送ベルト
31は適宜交換される。該交換に際して、まず、前後側
板35,36の突起部35a、36aと前後補助側板3
7,39の折曲部37a、39aとの間にそれぞれ配設
されているベルトテンションばね40,41か取外され
て、搬送ベルト31の張力が解除される。その際、テン
ションばねの後端フック40c、41cに工具が掛けら
れて、該テンションばね40,411f変形や破損を生
じることなく容易に取外される。そし゛C1前側板35
の折曲部35bと外装カバー・75を止めているビス7
7が取外され、ついで第7図に示゛ノ°ように、外装カ
バー75にビス79にて止められている後tl11 を
反3Gの析曲部36bが変形され、外装カバー75と前
側板35との間に隙間ができるように開かれる。すると
、ステー76の折曲部76aが外装カバー75に当接し
て、該後側板36の折曲部3Gbが永久変形しないよう
に所定思上の変形を防止する。そして、外装カバー75
と前側板35との間に搬送ベルト31が通過し得る隙間
ができると、該隙間を通して駆動ロー・う32及び従動
ロー“う33に巻回されている搬送ベルト31がその内
側に前側板35を潜らせて、外方に引き出される。更に
、新たな1.12送ベルト31がその内側に前側板35
を潜らせ、該隙間を通って内方にJtj人サレす(m!
1flJ’−”=う32&ヒ従勤0−533ニ巻向され
る。そして、前後側板35,3らと前後補助側板37.
39との間にテンンヮシばね40゜41がそれぞれ後部
フック40c、11c!に工具が掛けられて配設され、
栄送ベルl−31に張力が与えられて栄送ベルト31の
交換が終了する。
And the above-mentioned manuscript sea! The conveyor belt 31 that has been repeatedly conveyed is replaced as appropriate. When replacing, first, the protrusions 35a, 36a of the front and rear side plates 35, 36 and the front and rear auxiliary side plates 3
The belt tension springs 40 and 41 disposed between the bent portions 37a and 39a of the belts 7 and 39 are removed, and the tension on the conveyor belt 31 is released. At that time, a tool is hung on the rear end hooks 40c, 41c of the tension springs, and the tension springs 40, 411f can be easily removed without deforming or damaging them. Soshi C1 front plate 35
Screw 7 fixing the bent part 35b and the exterior cover 75
7 is removed, and then, as shown in FIG. 7, after being fixed to the exterior cover 75 with screws 79, the anti-3G bent portion 36b is deformed, and the exterior cover 75 and the front plate are 35 so that there is a gap between them. Then, the bent portion 76a of the stay 76 comes into contact with the exterior cover 75, thereby preventing the bent portion 3Gb of the rear side plate 36 from being permanently deformed. And the exterior cover 75
When a gap is created between the front plate 35 and the conveyor belt 31 through which the conveyor belt 31 can pass, the conveyor belt 31 wound around the driving row 32 and the driven row 33 passes through the gap and passes through the front plate 35. In addition, a new 1.12 feed belt 31 is inserted inside the front plate 35.
Dive in and inward through the gap (m!
1flJ'-''=U32&H subordinate 0-533 winding direction.Then, the front and rear side plates 35, 3, etc. and the front and rear auxiliary side plates 37.
39 and the tension springs 40 and 41 are connected to the rear hooks 40c and 11c, respectively! The tools are hung and arranged,
Tension is applied to the transport belt l-31, and the replacement of the transport belt 31 is completed.

(ト)発明の詳細 な説明したように、本発明によると、ベルトテンシνン
ばねのフックの少なくとも一方の先に掛け外し操作用の
フックを設けて、蛮送ベル!・交換の際に、該ベルトテ
ンンヲンばねの掛け外し成体用のフックに工具が掛けら
れて、該ばねのtMけ外しを容易にしたので、作業性が
向上し、ベルトテンンヨンばねの変形や破損がなくなっ
た。
(g) As described in detail, according to the present invention, a hook for hooking and unhooking is provided at the tip of at least one of the hooks of the belt tension spring, and the belt tensioner is attached to the hook of the belt tension spring.・When replacing the belt tension spring, a tool is hung on the hook for hooking and removing the belt tension spring, making it easy to remove the spring, improving work efficiency and preventing deformation or damage of the belt tension spring. lost.

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

第1図は本発明の実施例のシート宋送装置に装着された
ベルトデンン珍ンバ不の正面図、第2図は本発明のシ・
−1・搬送装置を装着した複写機の側面図、第3図はそ
のシートm送装置の平面図、第4図はシートm送装置に
装着される給紙ガイドの正面断直図で、(a)は本発明
に係るシート搬送装置に装着された給紙ガイドを示し、
(b)ないしくd)は従来のシート搬送装置に装着され
た給紙ガイドを示す。第5図は本発明のシー 1・附送
装置の排紙部の側m1図、第6図は本発明に係るシート
m送装置の暫゛動ローラの配置を示1側面断面図、そし
て、第7図はその駆動ローラに搬送べ/l−]−G:着
説する状態を示す側面断面図である1、U・・シート搬
送装置jll  、  40.41  ベルトテシシ冒
ンばね 、  40c、41e  川は外し操作用のフ
ック (後端フック)1、出!頴人  キャノン法式会
FIG. 1 is a front view of a belt cover installed in a sheet feeding device according to an embodiment of the present invention, and FIG.
-1. A side view of the copying machine equipped with the conveyance device, FIG. 3 is a plan view of the sheet m feeding device, and FIG. 4 is a front sectional view of the paper feed guide installed in the sheet m feeding device. a) shows a paper feed guide attached to a sheet conveying device according to the present invention,
(b) to d) show paper feed guides attached to a conventional sheet conveying device. FIG. 5 is a side view of the sheet discharging section of the sheet feeding device of the present invention, FIG. Figure 7 is a side cross-sectional view showing the state in which the sheet is conveyed to the drive roller. Hook for removal operation (rear end hook) 1, out! Ehito Canon Law Company

Claims (1)

【特許請求の範囲】[Claims] (1)1対のローラに巻回するシート材搬送用ベルトを
備え、かつ少なくとも一方のローラを移動し得るように
構成すると共に該ローラの支持部材と固定部材との間に
ベルトテンションばねをそのフックにて引掛けて前記ベ
ルトに張力を付与してなるシート搬送装置において、 前記ベルトテンションばねのフックの少なくとも一方の
先に、掛け外し操作用のフックを設けたことを特徴とす
るシート搬送装置。
(1) A sheet material conveying belt wound around a pair of rollers is provided, at least one of the rollers is configured to be movable, and a belt tension spring is installed between a supporting member and a fixed member of the roller. A sheet conveying device in which tension is applied to the belt by hooking the belt, characterized in that a hook for hooking and unhooking is provided at the tip of at least one of the hooks of the belt tension spring. .
JP24594285A 1985-11-01 1985-11-01 Sheet transport device Pending JPS62105839A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24594285A JPS62105839A (en) 1985-11-01 1985-11-01 Sheet transport device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24594285A JPS62105839A (en) 1985-11-01 1985-11-01 Sheet transport device

Publications (1)

Publication Number Publication Date
JPS62105839A true JPS62105839A (en) 1987-05-16

Family

ID=17141149

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24594285A Pending JPS62105839A (en) 1985-11-01 1985-11-01 Sheet transport device

Country Status (1)

Country Link
JP (1) JPS62105839A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5060923A (en) * 1988-10-04 1991-10-29 Mita Industrial Co., Ltd. Automatic document conveying device for an image processing machine
US5452067A (en) * 1992-06-11 1995-09-19 Mita Industrial Co., Ltd. Document conveyor belt release mechanism
JP2006056584A (en) * 2004-08-23 2006-03-02 Sato Corp Label pasting apparatus
CN105540159A (en) * 2016-01-12 2016-05-04 湖州新创丝织品有限公司 Conveying belt tensioning device of tenter
CN108861367A (en) * 2018-08-27 2018-11-23 苏州享药智能科技有限公司 From tensioning belt conveyor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5060923A (en) * 1988-10-04 1991-10-29 Mita Industrial Co., Ltd. Automatic document conveying device for an image processing machine
US5452067A (en) * 1992-06-11 1995-09-19 Mita Industrial Co., Ltd. Document conveyor belt release mechanism
JP2006056584A (en) * 2004-08-23 2006-03-02 Sato Corp Label pasting apparatus
CN105540159A (en) * 2016-01-12 2016-05-04 湖州新创丝织品有限公司 Conveying belt tensioning device of tenter
CN108861367A (en) * 2018-08-27 2018-11-23 苏州享药智能科技有限公司 From tensioning belt conveyor

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