JP2005349559A - After-treatment device of image forming apparatus - Google Patents

After-treatment device of image forming apparatus Download PDF

Info

Publication number
JP2005349559A
JP2005349559A JP2005163531A JP2005163531A JP2005349559A JP 2005349559 A JP2005349559 A JP 2005349559A JP 2005163531 A JP2005163531 A JP 2005163531A JP 2005163531 A JP2005163531 A JP 2005163531A JP 2005349559 A JP2005349559 A JP 2005349559A
Authority
JP
Japan
Prior art keywords
sheets
paper
sheet bundle
image forming
forming apparatus
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
JP2005163531A
Other languages
Japanese (ja)
Other versions
JP4240494B2 (en
Inventor
Yuji Ueno
裕二 植野
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.)
Ricoh Elemex Corp
Original Assignee
Ricoh Elemex 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 Ricoh Elemex Corp filed Critical Ricoh Elemex Corp
Priority to JP2005163531A priority Critical patent/JP4240494B2/en
Publication of JP2005349559A publication Critical patent/JP2005349559A/en
Application granted granted Critical
Publication of JP4240494B2 publication Critical patent/JP4240494B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Control Of Cutting Processes (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an after-treatment device of an image forming apparatus, which after-treatment device binds recorded sheets of paper by stacking them, and stapling them at their middle portion, and then folding back them at their middle portion, and can improve an appearance of the bundle of folded-back sheets of paper by accurately arranging its edges on the opening side. <P>SOLUTION: The after-treatment device of the image forming apparatus comprises a staple tray 25 which receives and stacks the recorded sheets of paper discharged from the image forming apparatus, a middle stapling staple 30 for stapling the middle portion of the stacked bundle P of the sheets of paper arranged on the staple tray 25, a middle folding-back unit 45 for folding back the bundle P of the sheets of paper stapled at their middle portion, and further a cutting means 50 for accurately trimming the opening side edges of the bundle P of the sheets of paper folded back by the middle folding-back unit 45. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

この発明は、複写機・プリンタ等の画像形成装置に隣接させて使用する画像形成装置の後処理装置に関する。詳しくは、画像形成装置から排出される用紙をスタックし、そのスタックした用紙束の中間位置を綴じ、その中間位置で折り重ねて製本する後処理装置に関する。   The present invention relates to a post-processing apparatus for an image forming apparatus that is used adjacent to an image forming apparatus such as a copying machine or a printer. More specifically, the present invention relates to a post-processing apparatus that stacks sheets discharged from an image forming apparatus, binds the intermediate position of the stacked sheet bundle, and folds and binds at the intermediate position.

従来、この種の画像形成装置の後処理装置の中に、たとえば複写機から排出されるコピー済用紙を入れてステープルトレイ上に一旦スタックし、そのスタックした用紙束の中間位置を綴じ、さらにその中間位置で折り重ねて製本し、図４に示すような冊子として排紙トレイ上に排出するものがある。   Conventionally, in a post-processing apparatus of this type of image forming apparatus, for example, copied sheets discharged from a copying machine are put on a staple tray, stacked once, and an intermediate position of the stacked sheet bundle is bound. There is a booklet that is folded at an intermediate position and discharged onto a paper discharge tray as a booklet as shown in FIG.

ところが、そのような従来の画像形成装置の後処理装置では、中綴じした用紙束を折り重ねたとき、綴じ側と反対の開き側が山形状に出っ張って不揃いの状態になってしまう。図４（イ）に示すように、用紙枚数が比較的少ない用紙束の場合には、その不揃い部分ｍはさほど目立たないが、同図（ロ）に示すように、用紙枚数が比較的多い用紙束の場合には、その不揃い部分ｎが目立ち、冊子として見栄えが良くないという課題があった。   However, in such a post-processing device of the conventional image forming apparatus, when the saddle-stitched sheet bundle is folded, the opening side opposite to the binding side protrudes in a mountain shape and is in an uneven state. As shown in FIG. 4A, in the case of a sheet bundle having a relatively small number of sheets, the uneven portion m is not so noticeable, but as shown in FIG. 4B, the sheet having a relatively large number of sheets. In the case of a bundle, there is a problem that the uneven portion n is conspicuous and the booklet does not look good.

そこで、請求項１に記載の発明は、たとえば以下の図面を用いて説明する実施の形態のとおり、画像形成装置から排出される用紙をスタックし、そのスタックした用紙束Ｐの中間位置を綴じ、その中間位置で折り重ねて製本する画像形成装置の後処理装置において、綴じ折りした前記用紙束Ｐの開く側の端縁を切り揃える裁断手段５０を備えてなる、ことを特徴とする。   Accordingly, in the invention described in claim 1, for example, as in the embodiment described with reference to the following drawings, sheets discharged from the image forming apparatus are stacked, and an intermediate position of the stacked sheet bundle P is bound, In the post-processing apparatus of the image forming apparatus that folds and binds at the intermediate position, the image forming apparatus includes a cutting unit 50 that cuts and aligns the opening edge of the bound bundle of sheets P.

そして、画像形成装置から用紙が排出されると、それら用紙をスタックし、そのスタックした用紙束Ｐの中間位置を綴じ、その中間位置で折り重ね、その折り重ねた用紙束Ｐの開く側の端縁を裁断手段５０で切り揃える。   When the sheets are discharged from the image forming apparatus, the sheets are stacked, the intermediate position of the stacked sheet bundle P is bound, folded at the intermediate position, and the opening end of the folded sheet bundle P is opened. The edges are trimmed by the cutting means 50.

請求項２に記載の発明は、請求項１に記載の画像形成装置の後処理装置において、たとえば以下の図面を用いて説明する実施の形態のとおり、用紙枚数が一定枚数以上の前記用紙束Ｐのときにのみ前記裁断手段５０を作動してなる、ことを特徴とする。   According to a second aspect of the present invention, in the post-processing apparatus of the image forming apparatus according to the first aspect, the sheet bundle P in which the number of sheets is equal to or greater than a certain number, as in the embodiment described with reference to the following drawings, for example. The cutting means 50 is operated only at the time.

請求項３に記載の発明は、請求項１または２に記載の画像形成装置の後処理装置において、たとえば以下に説明する実施の形態のとおり、前記裁断手段５０で前記用紙束Ｐの端縁を切り揃える切断位置ｋを、前記用紙束Ｐの用紙枚数に応じて調整可能としてなる、ことを特徴とする。   According to a third aspect of the present invention, in the post-processing apparatus of the image forming apparatus according to the first or second aspect, for example, as in an embodiment described below, an edge of the sheet bundle P is formed by the cutting means 50. The cutting position k to be trimmed can be adjusted according to the number of sheets of the sheet bundle P.

したがって、請求項１に記載の発明によれば、製本時、綴じ折り後に用紙束の開く側の端縁を、裁断手段で切り揃えるようにすることから、そのような用紙束の端縁に不揃い部分が生ずることを防止し、冊子としての見栄えを良好にすることができる。   Therefore, according to the first aspect of the present invention, the edge on the opening side of the sheet bundle is trimmed by the cutting means after binding and folding at the time of binding, so that the edge of the sheet bundle is not aligned. It is possible to prevent the occurrence of a portion and improve the appearance as a booklet.

請求項２に記載の発明によれば、加えて、用紙枚数が一定枚数以上の用紙束のときにのみ裁断手段を作動し、裁断手段の使用頻度を少なくするため、それだけ裁断手段の寿命を長くのばすことができる。   According to the second aspect of the invention, in addition, the cutting means is operated only when the number of sheets is equal to or more than a predetermined number of sheets, and the use frequency of the cutting means is reduced. Can be extended.

請求項３に記載の発明によれば、加えて、裁断手段で用紙束の端縁を切り揃える切断位置を、用紙束の用紙枚数に応じて調整可能とし、これにより、折り重ねたときに用紙束の厚さに応じて発生する不揃い部分を確実になくすことができ、冊子としての見栄えを一層良好にすることができる。   According to the invention described in claim 3, in addition, the cutting position where the edge of the sheet bundle is trimmed by the cutting means can be adjusted according to the number of sheets in the sheet bundle, so that when folded, the sheet Uneven portions generated according to the thickness of the bundle can be reliably eliminated, and the appearance as a booklet can be further improved.

以下、図面を参照しつつ、この発明の実施の形態について説明する。
図１は、この発明による画像形成装置の後処理装置の概略構成図である。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic configuration diagram of a post-processing apparatus according to the present invention.

この後処理装置は、たとえば図示省略したデジタル複写機（この発明でいう「画像形成装置」）の横に隣接して備える。図中符号１０で、この後処理装置の外装ケースを示す。   This post-processing apparatus is provided adjacent to the side of, for example, a digital copying machine (not shown) (“image forming apparatus” in the present invention). Reference numeral 10 in the drawing denotes an exterior case of the post-processing apparatus.

外装ケース１０は、縦長箱状をなし、図中右の側面上側に、上記複写機の排紙口と一致する給紙口１１を設ける一方、図中左の側面上側に上排紙口１２を設け、下側に下排紙口１３を設ける。そして、上排紙口１２の下側に上排紙トレイ１５を取り付け、下排紙口１３の下側に下排紙トレイ１６を取り付け、底面四隅にキャスタ１４を取り付けて移動自在としてなる。   The outer case 10 has a vertically long box shape, and is provided with a paper feeding port 11 that coincides with the paper ejection port of the copying machine on the upper side of the right side in the figure, while an upper paper ejection port 12 is provided on the upper side of the left side in the figure. The lower paper discharge port 13 is provided on the lower side. Then, the upper paper discharge tray 15 is attached to the lower side of the upper paper discharge port 12, the lower paper discharge tray 16 is attached to the lower side of the lower paper discharge port 13, and casters 14 are attached to the bottom four corners so as to be movable.

そして、図示後処理装置は、外装ケース１０内の図中手前側と後側に対向側板（図示省略）を備え、その２つの側板間で以下に説明する構成部品のほとんどを支持する。そうして、給紙口１１と上排紙口１２との間に、コピー済用紙を上排紙トレイ１５へ搬送する第１の搬送路Ａを設ける。   The illustrated post-processing apparatus includes opposing side plates (not shown) on the front side and the rear side in the exterior case 10 in the figure, and supports most of the components described below between the two side plates. Thus, a first transport path A for transporting the copied paper to the upper paper discharge tray 15 is provided between the paper feed port 11 and the upper paper discharge port 12.

第１の搬送路Ａには、その給紙口１１位置に一対の給紙コロ１７を設け、上排紙口１２位置に一対の排紙コロ１８を設け、途中に二対の搬送コロ１９・２０を設ける。さらに搬送コロ１９の上流側には、コピー済用紙にパンチ穴をあけるパンチ穴あけユニット２１を設け、搬送コロ１９の下流側には、搬送路を切り替える切替爪２２を回動自在に設けてなる。   In the first transport path A, a pair of paper feed rollers 17 is provided at the position of the paper feed port 11, a pair of paper discharge rollers 18 are provided at the position of the upper paper discharge port 12, and two pairs of transport rollers 19. 20 is provided. Further, on the upstream side of the transport roller 19, a punch hole punching unit 21 for punching a copied sheet is provided, and on the downstream side of the transport roller 19, a switching claw 22 for switching the transport path is provided rotatably.

なお、上述した排紙コロ１８は、その上側の従動コロを支持アーム２３の先端に取り付けて支持する。支持アーム２３は、その基端の支軸２３ａを中心として回動自在に上記対向側板で支える。そして、不図示のアーム駆動モータで回動して前記従動コロを駆動コロに対し接離自在としてなる。   The paper discharge roller 18 described above supports the upper driven roller attached to the tip of the support arm 23. The support arm 23 is supported by the opposing side plate so as to be rotatable about a support shaft 23a at the base end thereof. Then, the driven roller is rotated by an arm drive motor (not shown) so that the driven roller can be brought into contact with and separated from the drive roller.

さらに、外装ケース１０内には、第１の搬送路Ａの切替爪２２位置で分岐して下向きに第２の搬送路Ｂを設ける。第２の搬送路Ｂは、コピー済用紙をステープルトレイ２５へ搬送する搬送路で、途中に各々一対の搬送コロ２６〜２８を設ける。   Further, in the outer case 10, a second transport path B is provided in a downward direction by branching at the position of the switching claw 22 of the first transport path A. The second conveyance path B is a conveyance path for conveying the copied paper to the staple tray 25, and a pair of conveyance rollers 26 to 28 are provided in the middle.

ステープルトレイ２５は、四角い板状をなし、図示省略するが、その中央で図中矢印ａで示す用紙束搬送方向に長いベルト用開口を設けるとともに、ベルト用開口の左右両側に一対のステープル用開口を設ける。さらに上端部２５ａに、用紙束搬送方向ａと直交する幅方向に長い中折り用ガイド穴２５ｂを設ける。そして、上端部２５ａ側を左に下端部２５ｃ側を右に少し傾けて設置してなる。   The staple tray 25 has a square plate shape and is not shown in the figure. However, a long belt opening is provided in the center of the staple tray 25 in the sheet bundle conveying direction indicated by an arrow a in the center, and a pair of staple openings is provided on both the left and right sides of the belt opening. Is provided. Further, a center folding guide hole 25b that is long in the width direction perpendicular to the sheet bundle conveying direction a is provided in the upper end portion 25a. Then, the upper end 25a side is inclined to the left and the lower end 25c side is slightly inclined to the right.

このステープルトレイ２５には、２つの前記ステープル用開口位置に、それぞれ用紙束の中心を綴じるための中綴じステープル３０を取り付け、下端部２５ｃに、用紙束の片側を綴じるための片綴じステープル３１を取り付けてなる。   The staple tray 25 is attached with saddle-stitched staples 30 for binding the centers of the sheet bundles at the two staple opening positions, and the single-bound staples 31 for binding one side of the sheet bundles at the lower end 25c. Installed.

また、ステープルトレイ２５の図中右の表面上には、用紙の両側を揃える一対のジョガーフェンス（図示省略）を、用紙束搬送方向ａと直交する向きに対向して移動自在に設ける。さらに、該ジョガーフェンスの下側に、Ｌ状に折れ曲げた用紙受け３２を取り付けてなる。   Further, on the right surface of the staple tray 25 in the drawing, a pair of jogger fences (not shown) for aligning both sides of the paper are provided so as to be movable in the direction perpendicular to the paper bundle conveying direction a. Further, a paper receiver 32 bent in an L shape is attached to the lower side of the jogger fence.

そして、図示後処理装置では、上記ステープルトレイ２５の表側に、支軸３３を中心として揺動自在にタタキコロ３４を設ける。タタキコロ３４は、軸芯にスポンジを巻いて形成し、不図示の駆動モータの駆動を支軸３３に伝えて往復回動可能とする。   In the illustrated post-processing apparatus, a taki roller 34 is provided on the front side of the staple tray 25 so as to be swingable about the support shaft 33. The takikoro 34 is formed by wrapping a sponge around an axis, and transmits a drive motor (not shown) to the support shaft 33 so as to be reciprocally rotatable.

一方、ステープルトレイ２５の裏側には、上記ベルト用開口から一部を臨ませて搬送ベルト３５を配置する。搬送ベルト３５は、無端ベルトで、表面上にねじ止め等により突起片４０を１つ立設してなる。そして、駆動ローラ３６と従動ローラ３７・３８間に掛け渡し、不図示の駆動モータの駆動を駆動ローラ３６に伝えて図中反時計まわりに回動可能とする。   On the other hand, on the back side of the staple tray 25, a conveying belt 35 is disposed so as to partially face the belt opening. The conveyor belt 35 is an endless belt, and has one protruding piece 40 standing on the surface by screwing or the like. Then, it is passed between the drive roller 36 and the driven rollers 37 and 38, and the drive of a drive motor (not shown) is transmitted to the drive roller 36 so that it can be rotated counterclockwise in the figure.

また、図示後処理装置には、上述したステープルトレイ２５の上端部２５ａ側に、鎖線で囲って示す中折りユニット４５を備える。中折りユニット４５は、用紙束をその中間位置で折り重ねる装置で、中折り用ガイド穴２５ｂの図中右側に中折りガイド板４１を備え、左側に一対の中折りコロ４２を備えてなる。   Further, the illustrated post-processing apparatus includes a half-folding unit 45 surrounded by a chain line on the upper end portion 25a side of the staple tray 25 described above. The center folding unit 45 is a device that folds a bundle of sheets at an intermediate position, and includes a center folding guide plate 41 on the right side of the center folding guide hole 25b in the drawing and a pair of center folding rollers 42 on the left side.

中折りガイド板４１は、中折り用ガイド穴２５ｂに沿って長く、図中左の先端縁を先細に形成し、その先端縁を中折りコロ４２間のニップ部に向けて配置する。そして、不図示の中折り専用モータで駆動して直線往復移動自在に設けてなる。   The middle fold guide plate 41 is long along the middle fold guide hole 25b, and the tip edge on the left side in the drawing is tapered, and the tip edge is disposed toward the nip portion between the middle fold rollers 42. It is driven by a motor for exclusive use of middle folding (not shown) so as to be freely reciprocated linearly.

さらに、図示後処理装置には、ステープルトレイ２５の上端部２５ａと排紙コロ１８との間に、用紙束Ｐを搬送して上排紙トレイ１５へ排出する上排紙路Ｃを設ける。一方、中折りコロ４２と下排紙口１３との間には、用紙束Ｐを搬送して下排紙トレイ１６へ排出する下排紙路Ｄを設けてなる。   Further, the illustrated post-processing apparatus is provided with an upper discharge path C that conveys the sheet bundle P and discharges it to the upper discharge tray 15 between the upper end portion 25 a of the staple tray 25 and the discharge roller 18. On the other hand, a lower paper discharge path D for conveying the sheet bundle P and discharging it to the lower paper discharge tray 16 is provided between the center folding roller 42 and the lower paper discharge port 13.

下排紙路Ｄには、下排紙口１３位置に一対の排紙コロ４６を設け、途中に一対の搬送コロ４７を設ける。そして、搬送コロ４７と排紙コロ４６との間に、折り重ねた用紙束の通過を検知する、たとえばフォトセンサ等のセンサ４９を設け、そのセンサ４９と排紙コロ４６との間に、カッタなどの裁断手段５０を設けてなる。   In the lower paper discharge path D, a pair of paper discharge rollers 46 are provided at the position of the lower paper discharge port 13, and a pair of transport rollers 47 are provided in the middle. A sensor 49 such as a photo sensor is provided between the transport roller 47 and the paper discharge roller 46 to detect the passage of the folded sheet bundle, and the cutter 49 is provided between the sensor 49 and the paper discharge roller 46. A cutting means 50 such as is provided.

さて、上述した画像形成装置の後処理装置において、製本処理を行わない場合は、前記デジタル複写機から排出されるコピー済用紙を、給紙口１１から入れて搬送コロ１９・２０で第１の搬送路Ａを通して搬送し、そのまま排紙コロ１８で上排紙口１２から上排紙トレイ１５上へ排出する。   In the post-processing apparatus of the image forming apparatus described above, when the bookbinding process is not performed, the copied paper ejected from the digital copying machine is inserted from the paper feed port 11 and is conveyed by the transport rollers 19 and 20. The paper is transported through the transport path A, and is directly discharged from the upper paper discharge port 12 onto the upper paper discharge tray 15 by the paper discharge roller 18.

なお、この場合、コピー済用紙にパンチ穴あけ処理を施すときは、コピーボタンを押す前に、予め所定の選択キーによりパンチ穴あけ処理を選択する。そして、コピー済用紙が第１の搬送路Ａを通るとき、パンチ穴あけユニット２１の位置でコピー済用紙の搬送を一旦停止し、該ユニット２１でコピー済用紙にパンチ穴をあけ、そのまま第１の搬送路Ａを通して上排紙トレイ１５上へ排出する。   In this case, when performing punch punching processing on the copied paper, punch punching processing is selected in advance by a predetermined selection key before the copy button is pressed. Then, when the copied paper passes through the first transport path A, the transport of the copied paper is temporarily stopped at the position of the punch hole punching unit 21, the punched hole is punched in the copied paper by the unit 21, and the first paper is left as it is. The paper is discharged onto the upper paper discharge tray 15 through the conveyance path A.

一方、製本処理を行う場合は、予め所定の選択キーにより製本処理を選択し、さらに、製本処理の中でも、たとえば用紙をセンタで綴じる中綴じを選択する。   On the other hand, when the bookbinding process is performed, the bookbinding process is selected in advance with a predetermined selection key, and further, for example, the saddle stitching for binding sheets at the center is selected in the bookbinding process.

そのように製本処理モードが選択されると、図示後処理装置では、切替爪２２を鎖線で示す位置に回動し、搬送ルートを第２搬送路Ｂに切り替える。また、搬送ベルト３５を回動し、突起片４０を、図１中鎖線で示すホームポジションに位置決めする。さらに、上記支持アーム２３を支軸２３ａを中心として図中時計方向に回動し、上側の従動コロを駆動コロから離して両者間を開放する。   When the bookbinding processing mode is thus selected, the illustrated post-processing apparatus rotates the switching claw 22 to the position indicated by the chain line and switches the transport route to the second transport path B. Further, the conveyor belt 35 is rotated to position the protruding piece 40 at the home position indicated by the chain line in FIG. Further, the support arm 23 is rotated in the clockwise direction in the drawing around the support shaft 23a, and the upper driven roller is separated from the drive roller to open the space between the two.

そして、コピーボタンを押して後、コピー後の用紙が前記デジタル複写機から排出されると、その用紙は、順次、給紙口１１を通って第１の搬送路Ａに入り、切替爪２２で途中から第二の搬送路Ｂへ導かれる。そうして、搬送コロ２６・２７・２８で第二の搬送路Ｂを通して搬送しステープルトレイ２５上に排出する。そして、その用紙を用紙受け３２で受けて、順次、ステープルトレイ２５上にスタックする。   After the copy button is pressed and the copied paper is ejected from the digital copying machine, the paper sequentially enters the first transport path A through the paper feed port 11 and is halfway through the switching claw 22. To the second transport path B. Then, the paper is transported through the second transport path B by the transport rollers 26, 27, and 28 and discharged onto the staple tray 25. Then, the sheets are received by the sheet receiver 32 and sequentially stacked on the staple tray 25.

そのとき、用紙が排出されると、その都度、タタキコロ３４を支軸３３を中心として回動し用紙を１枚ずつその上から叩き付ける。そのように用紙を叩いて衝撃を与えることにより、たとえば用紙同志が付着していると、それらを分離して上下端縁を揃える。   At that time, each time the paper is discharged, the tapping roller 34 is rotated around the support shaft 33 to hit the paper one by one from the top. By hitting the paper in this manner and applying an impact, for example, if papers are attached, they are separated and the upper and lower edges are aligned.

また、こうして所定枚数の用紙がスタックされると、用紙サイズに応じて前記ジョガーフェンスを移動して用紙束Ｐの左右側縁を揃える。   When a predetermined number of sheets are stacked in this way, the jogger fence is moved according to the sheet size to align the left and right side edges of the sheet bundle P.

しかる後、搬送ベルト３５を回動し、突起片４０で用紙束Ｐを押し上げ、その用紙束Ｐの中間位置が図１中符号ｓで示すステープル位置に到達したとき、そのステープル位置ｓで押し上げを一旦停止する。そして、中綴じステープル３０を作動して用紙束Ｐの中間位置に綴じ針を打って綴じる。   Thereafter, the conveying belt 35 is rotated, and the sheet bundle P is pushed up by the protruding piece 40. When the intermediate position of the sheet bundle P reaches the staple position indicated by reference numeral s in FIG. Stop temporarily. Then, the saddle stitching staple 30 is actuated and a binding needle is hit at the intermediate position of the sheet bundle P to be bound.

それから、搬送ベルト３５を再び回動し、突起片４０で用紙束Ｐをさらに押し上げ、その中間位置が中折りユニット４５の中折り位置ｔに達したとき、その中折り位置ｔで押し上げを停止する。   Then, the conveyance belt 35 is rotated again, and the sheet bundle P is further pushed up by the protruding piece 40. When the intermediate position reaches the middle folding position t of the middle folding unit 45, the pushing up is stopped at the middle folding position t. .

そうして、前記中折り専用モータを駆動して中折りガイド板４１を作動し、図２に示すように、中折りガイド板４１を移動して用紙束Ｐの中間位置に押し当てる。さらに、中折りガイド板４１を中折りガイド穴２５ｂを通して中折りコロ４２間へ移動して用紙束Ｐを押し込み、中折りコロ４２間で２つに折り重ねる。   Then, the middle folding dedicated motor is driven to operate the middle folding guide plate 41, and the middle folding guide plate 41 is moved and pressed against the intermediate position of the sheet bundle P as shown in FIG. Further, the middle folding guide plate 41 is moved between the middle folding rollers 42 through the middle folding guide holes 25b to push in the sheet bundle P, and is folded in two between the middle folding rollers 42.

しかして、そのように折り重ねながら、中折りコロ４２で用紙束Ｐを、図１に示す下排紙路Ｄへ送り出し、さらに搬送コロ４７で裁断手段５０へと搬送する。   Then, while folding in such a manner, the sheet bundle P is sent out to the lower paper discharge path D shown in FIG. 1 by the intermediate folding roller 42, and further conveyed to the cutting means 50 by the conveying roller 47.

そして、裁断手段５０の手前で、用紙束Ｐの搬送方向後端が通過したことをセンサ４９で検知すると、それに基づき用紙束Ｐを一定距離だけ搬送し、その用紙束Ｐの切断位置（たとえば上記図４（ロ）中鎖線で示す切断位置ｋ）が、裁断手段５０の刃部位置に達したとき、用紙束Ｐの搬送を一旦停止する。   When the sensor 49 detects that the rear end in the transport direction of the sheet bundle P has passed before the cutting means 50, the sheet bundle P is transported by a certain distance based on that and the cutting position of the sheet bundle P (for example, the above-mentioned) When the cutting position k) indicated by the chain line in FIG. 4B reaches the blade position of the cutting means 50, the conveyance of the sheet bundle P is temporarily stopped.

そうして、裁断手段５０を作動し、折り重ねた用紙束Ｐをカット位置ｋに沿って切断し、その用紙束Ｐの開く側の端縁を揃える。   Then, the cutting means 50 is operated to cut the folded sheet bundle P along the cut position k, and the edges on the side where the sheet bundle P is opened are aligned.

カット後、用紙束Ｐを排紙コロ４６で再び搬送し、冊子として下排紙トレイ１６上に排出する。   After the cutting, the sheet bundle P is conveyed again by the discharge roller 46 and discharged onto the lower discharge tray 16 as a booklet.

ところで、図示後処理装置では、製本処理する場合に、コピー済用紙を片側で綴じる片綴じを行うこともできる。   By the way, in the illustrated post-processing apparatus, when the bookbinding process is performed, it is possible to perform one-side binding for binding the copied paper on one side.

その場合は、前述した中綴じの場合と同様に、第２の搬送路Ｂを通してコピー済用紙をステープルトレイ２５上に１枚ずつ排出して用紙受け３２で受ける。そして、上下左右を揃えてコピー済用紙が所定枚数スタックされると、片綴じステープル３１を作動し、用紙束の片側に綴じ針を打って綴じる。   In that case, as in the case of the saddle stitching described above, the copied sheets are discharged onto the staple tray 25 one by one through the second conveyance path B and received by the sheet receiver 32. When a predetermined number of copied sheets are stacked with the top, bottom, left, and right aligned, the single-binding staple 31 is actuated and a binding needle is applied to one side of the sheet bundle to be bound.

それから、搬送ベルト３５を回動して突起片４０で用紙束を上排紙路Ｃへ押し上げ、その排紙路Ｃを通して排紙コロ１８で上排紙トレイ１５上へと排出する。   Then, the conveyor belt 35 is rotated to push the sheet bundle up to the upper paper discharge path C by the protruding piece 40, and is discharged onto the upper paper discharge tray 15 by the paper discharge roller 18 through the paper discharge path C.

さて、上述した後処理装置において、中折りユニット４５で用紙束Ｐを中折りした後に、常に裁断手段５０で裁断を行うと、その刃部が傷みやすく寿命が短くなるおそれがある。   In the post-processing apparatus described above, if the sheet bundle P is folded halfway by the folding unit 45 and always cut by the cutting means 50, the blade part is likely to be damaged and the life may be shortened.

そこで、この発明では、たとえば上述した後処理装置において、たとえば不図示の制御部により裁断手段５０の作動をコントロールし、用紙枚数が一定枚数以上の用紙束Ｐのときにのみ、裁断手段５０を作動する構成にすることもできる。   Therefore, in the present invention, for example, in the above-described post-processing apparatus, the operation of the cutting means 50 is controlled by a control unit (not shown), for example, and the cutting means 50 is operated only when the number of paper sheets P is a certain number or more. It can also be set as the structure to do.

その場合は、該制御部により、たとえば図３に示すように裁断手段５０による裁断処理をコントロールする。   In that case, the control unit controls the cutting process by the cutting means 50 as shown in FIG.

まずステップＳ１にて、綴じ折りする用紙束Ｐの用紙枚数が一定枚数以上か、たとえば５枚以上か否か判断する。４枚以下のときは、裁断処理を行わず、ステップＳ６に進み、排紙処理を行う。つまり、中折り後の用紙束Ｐを、裁断手段５０位置をそのまま通過させて下排紙トレイ１６上に排出する。   First, in step S1, it is determined whether or not the number of sheets of the sheet bundle P to be bound and folded is a certain number or more, for example, 5 or more. When the number of sheets is four or less, the cutting process is not performed, and the process proceeds to step S6 to perform the paper discharge process. That is, the folded sheet bundle P passes through the position of the cutting means 50 and is discharged onto the lower discharge tray 16.

一方、用紙枚数が５枚以上のときは、ステップＳ２に進み、中折りした用紙束Ｐの搬送方向後端が通過したか否かを、前記センサ４９で検知する。その通過を検知したときは、その検知結果に基づき、用紙束Ｐを一定距離だけ搬送する。そして、ステップＳ３にて、用紙束Ｐの上記端部での前記切断位置ｋが裁断手段５０の刃部位置に達したとき、用紙束Ｐの搬送を一旦停止する。   On the other hand, when the number of sheets is five or more, the process proceeds to step S2 where the sensor 49 detects whether or not the rear end of the folded sheet bundle P in the transport direction has passed. When the passage is detected, the sheet bundle P is conveyed by a certain distance based on the detection result. In step S3, when the cutting position k at the end of the sheet bundle P reaches the blade position of the cutting means 50, the conveyance of the sheet bundle P is temporarily stopped.

それから、次のステップＳ４にて、裁断処理する。つまり、裁断手段５０を作動し、綴じ折りした用紙束Ｐを上記切断位置ｋに沿って切断し、その用紙束Ｐの開く側の端縁を揃える。   Then, in the next step S4, a cutting process is performed. That is, the cutting unit 50 is operated to cut the bound and bundled sheet bundle P along the cutting position k, and align the edges on the opening side of the sheet bundle P.

カット後、ステップＳ５に進み、用紙束Ｐを排紙コロ４６で再び搬送し、ステップＳ６にて下排紙口１３から下排紙トレイ１６上へ排出する。   After cutting, the process proceeds to step S5, where the sheet bundle P is conveyed again by the discharge roller 46, and discharged from the lower discharge port 13 onto the lower discharge tray 16 in step S6.

上述した例では、裁断処理を行うか否かの基準枚数を５枚とするが、用紙サイズや紙厚などに応じて適宜の枚数に変更することもできる。   In the example described above, the reference number for determining whether or not to perform the cutting process is five, but it may be changed to an appropriate number according to the paper size, paper thickness, and the like.

ところで、用紙束の用紙枚数がたとえば５枚以上であっても、用紙束を折り重ねたときに、その開く側に発生する不揃い部分の大きさは、用紙枚数の多さによって変化する。   By the way, even when the number of sheets in the sheet bundle is five or more, for example, when the sheet bundle is folded, the size of the uneven portion generated on the opening side varies depending on the number of sheets.

そこで、この発明では、たとえば上述した後処理装置において、前記裁断手段５０で用紙束Ｐの端縁を切り揃える切断位置ｋを、用紙束Ｐの用紙枚数に応じて調整するように構成するとよい。   Therefore, in the present invention, for example, in the above-described post-processing apparatus, the cutting position k at which the edge of the sheet bundle P is trimmed by the cutting means 50 may be adjusted according to the number of sheets in the sheet bundle P.

この発明による画像形成装置の後処理装置の概略構成図である。1 is a schematic configuration diagram of a post-processing apparatus of an image forming apparatus according to the present invention. その後処理装置において用紙束を中折りする状態を示す状態説明図である。FIG. 6 is a state explanatory diagram illustrating a state where the sheet bundle is folded in the processing apparatus thereafter. その用紙束の裁断処理の一例を説明するフローチャートである。It is a flowchart explaining an example of the cutting process of the sheet bundle. 従来の用紙束の製本後の状態を示し、（イ）は用紙枚数が比較的少ない場合、（ロ）は用紙枚数が比較的多い場合の製本後の状態を示す説明図である。FIG. 8B is an explanatory diagram showing a state after bookbinding when a conventional sheet bundle is bound, (A) is a relatively small number of sheets, and (B) is a state after binding when the number of sheets is relatively large.

符号の説明Explanation of symbols

３０ 中綴じステープル
４５ 中折りユニット
５０ 裁断手段
Ｐ 用紙束
ｋ 切断位置
30 Saddle Stitch Staple 45 Center Folding Unit 50 Cutting Means P Paper Bundle k Cutting Position

Claims (3)

画像形成装置から排出される用紙をスタックし、そのスタックした用紙束の中間位置を綴じ、その中間位置で折り重ねて製本する画像形成装置の後処理装置において、綴じ折りした前記用紙束の開く側の端縁を切り揃える裁断手段を備えてなる、画像形成装置の後処理装置。   In the post-processing apparatus of an image forming apparatus that stacks sheets discharged from the image forming apparatus, binds the intermediate position of the stacked sheet bundle, and folds and binds at the intermediate position, the side on which the bound sheet bundle is opened A post-processing apparatus comprising a cutting means for trimming the edges of the image forming apparatus. 用紙枚数が一定枚数以上の前記用紙束のときにのみ前記裁断手段を作動してなる、請求項１に記載の画像形成装置の後処理装置。   The post-processing apparatus according to claim 1, wherein the cutting unit is operated only when the number of sheets is equal to or greater than a certain number of sheets. 前記裁断手段で前記用紙束の端縁を切り揃える切断位置を、前記用紙束の用紙枚数に応じて調整可能としてなる、請求項１または２に記載の画像形成装置の後処理装置。   The post-processing apparatus according to claim 1, wherein a cutting position at which the edge of the sheet bundle is trimmed by the cutting unit can be adjusted according to the number of sheets of the sheet bundle.
JP2005163531A 2005-06-03 2005-06-03 Post-processing device for image forming apparatus Expired - Fee Related JP4240494B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005163531A JP4240494B2 (en) 2005-06-03 2005-06-03 Post-processing device for image forming apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005163531A JP4240494B2 (en) 2005-06-03 2005-06-03 Post-processing device for image forming apparatus

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP17406898A Division JP4236136B2 (en) 1998-06-05 1998-06-05 Post-processing device for image forming apparatus

Publications (2)

Publication Number Publication Date
JP2005349559A true JP2005349559A (en) 2005-12-22
JP4240494B2 JP4240494B2 (en) 2009-03-18

Family

ID=35584431

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005163531A Expired - Fee Related JP4240494B2 (en) 2005-06-03 2005-06-03 Post-processing device for image forming apparatus

Country Status (1)

Country Link
JP (1) JP4240494B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008030143A (en) * 2006-07-28 2008-02-14 Canon Finetech Inc Apparatus for cutting off bundle of sheets
CN107792716A (en) * 2016-09-01 2018-03-13 柯尼卡美能达株式会社 After-treatment device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008030143A (en) * 2006-07-28 2008-02-14 Canon Finetech Inc Apparatus for cutting off bundle of sheets
CN107792716A (en) * 2016-09-01 2018-03-13 柯尼卡美能达株式会社 After-treatment device
CN107792716B (en) * 2016-09-01 2020-08-25 柯尼卡美能达株式会社 Post-processing device

Also Published As

Publication number Publication date
JP4240494B2 (en) 2009-03-18

Similar Documents

Publication Publication Date Title
JP4236136B2 (en) Post-processing device for image forming apparatus
JP2003089472A (en) Post-processing device and image forming system
JP2007055792A (en) Image forming system
JP4240494B2 (en) Post-processing device for image forming apparatus
JP4240511B2 (en) Post-processing device for image forming apparatus
JP2000103567A (en) Paper sheet processing device
JP3705711B2 (en) Paper processing apparatus and image forming apparatus
JP4084300B2 (en) Paper processing apparatus, image forming system, computer program, and recording medium
JP4315437B2 (en) Paper folding device
JP5446628B2 (en) Sheet processing apparatus and image forming apparatus
JP2003231092A (en) Paper processor and image formation system
JP2008030932A (en) Paper post-processing device
JPH08225227A (en) Sheet material bundle stapling device
JP2003261258A (en) Paper processor and image forming system
JP3653461B2 (en) Post-processing device for image forming apparatus
JP2005263404A (en) Paper post-processing device and image forming system
JP4405207B2 (en) Paper processing apparatus, image forming system, paper processing method, computer program, and recording medium
JP2010115885A (en) Book binding device, book binding method, and image forming system
JP4565933B2 (en) Sheet processing device
JP2006036480A (en) Sheet post-processing device
JP2003146532A (en) Post-processing device and image forming system
JP2014144867A (en) Sheet post-processing device, and image formation system using the same
JP2003095533A (en) Post-processing device and image forming device
JP2015139873A (en) Paper processing device, image forming apparatus provided with the same, and image forming system
JP2011207607A (en) Paper postprocessing device

Legal Events

Date Code Title Description
A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20080610

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080804

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20081219

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20081219

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120109

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120109

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130109

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140109

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140109

Year of fee payment: 5

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313113

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

LAPS Cancellation because of no payment of annual fees