JP2011246221A - Fold marking device, image forming system, and paper conveying method - Google Patents

Fold marking device, image forming system, and paper conveying method Download PDF

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JP2011246221A
JP2011246221A JP2010119879A JP2010119879A JP2011246221A JP 2011246221 A JP2011246221 A JP 2011246221A JP 2010119879 A JP2010119879 A JP 2010119879A JP 2010119879 A JP2010119879 A JP 2010119879A JP 2011246221 A JP2011246221 A JP 2011246221A
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crease
paper
sheet
unit
transport path
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Hideya Nagasako
秀也 永迫
Naohiro Yoshikawa
直宏 吉川
Hitoshi Hattori
仁 服部
Takashi Nishifuji
高史 西藤
Naoyuki Ishikawa
直行 石川
Yusuke Shibazaki
勇介 柴崎
Go Aiba
剛 相場
Naoki Oikawa
直記 及川
Hidetoshi Kojima
秀俊 児島
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Ricoh Co Ltd
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Ricoh Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To maintain or enhance productivity by receiving the next paper during execution of fold marking processing.SOLUTION: A fold marking device includes: a main path MP; a switch-back path SB branched in the direction opposite to the paper conveying direction from the main path MP; and a branching means t1 for guiding paper from the main path MP to the switch-back path SB. After the rear end of the preceding previous paper Sn goes beyond the branching means t1 when paper is conveyed to the position of a fold marking member 6, the previous paper Sn is conveyed in the opposite direction. After the rear end part of the previous paper Sn is conveyed from the branching means t1 to the switch-back path SB, the paper conveyance is stopped such that the fold marking position of the previous paper Sn corresponds to the position of the fold marking member 6. Before the next paper Sn+1, conveyed while the previous paper Sn is being conveyed in the opposite direction or while the fold is being marked on the previous paper Sn, reaches the fold marking member 6, the previous paper Sn is ejected from the position of the fold marking member 6.

Description

本発明は、前段から搬送されてくるシート状部材(以下、用紙と称する。)などの用紙束に中綴じを行い、用紙を中央部で2つに折る前に用紙に折り跡を付ける、若しくは筋付けを行う折り跡付け装置、この折り跡付け装置と画像形成装置とを含む画像形成システム、及び折り跡付け装置で実行される用紙搬送方法に関する。   The present invention performs saddle stitching on a bundle of sheets such as a sheet-like member (hereinafter referred to as a sheet) conveyed from the previous stage, and marks the sheet before folding the sheet into two at the center, or The present invention relates to a crease device that performs scoring, an image forming system that includes the crease device and an image forming device, and a sheet conveying method that is executed by the crease device.

従来から、画像形成装置から排出された複数の用紙を束状にまとめた用紙束に中綴じを行い、中綴じした用紙束を中央部で2つ折りにする、所謂中折り若しくは中折り製本が行われている。このように複数枚からなる用紙束をまとめて折ると、用紙束の外側は内側の用紙と比べて折り部の用紙の伸び量が大きくなる。そのため、外側の用紙の折り部では形成された画像部が伸びることにより、トナー剥がれ等、画像部にダメージが生じることがある。同様の現象はZ折り、3つ折り等、その他の折り処理でも発生する。また、用紙束の厚さによって折りが不十分であることがある。   Conventionally, so-called center-folding or center-folding is performed in which a sheet bundle in which a plurality of sheets discharged from an image forming apparatus are bundled is subjected to saddle stitching, and the center-bound sheet bundle is folded in two at the center. It has been broken. When a bundle of sheets made up of a plurality of sheets is folded together in this way, the amount of extension of the sheet at the folding portion on the outer side of the sheet bundle becomes larger than that of the inner sheet. For this reason, the formed image portion extends at the outer paper folding portion, and the image portion may be damaged, such as toner peeling. The same phenomenon occurs in other folding processes such as Z-folding and three-folding. Further, folding may be insufficient depending on the thickness of the sheet bundle.

そのため、用紙束を2つ折りする等の折り処理を行う前に、用紙の折り部に予め筋付けを付けておき、外側の用紙も折れやすくすることでトナー剥がれを防止するクリーサーと呼ばれる筋付け装置が既に知られている。このような筋付け装置では、ローラを走行させ、レーザーで焼き、あるいは筋入れ刃で押圧する等の方法によりを搬送方向と直角方向に筋付けを付けるものがある。   Therefore, a creasing device called a creaser that prevents the toner from peeling off by pre-scoring the folded portion of the paper before the folding process such as folding the paper bundle in two and making the outer paper easy to break. Is already known. In such a creasing device, there is a creasing device that runs in a direction perpendicular to the conveying direction by running a roller, baking with a laser, or pressing with a creasing blade.

例えば特許文献1(特開2004−284774号公報)には、用紙が搬送されてくる第一の経路と、後処理部に搬送する第二の経路と、後処理なしに排出する第三の経路と、用紙を滞留させる第四の経路がある用紙搬送装置において、第二の搬送路に送られた用紙を第四の搬送路に滞留させ、第一の搬送路から送られてくる用紙を第二の搬送路に送られた用紙と重ねて下流の後処理へ送り出す機構が開示されている。   For example, Patent Document 1 (Japanese Patent Application Laid-Open No. 2004-284774) discloses a first path through which paper is transported, a second path through which paper is transported to the post-processing section, and a third path through which paper is discharged without post-processing. In a paper transport apparatus having a fourth path for retaining paper, the paper sent to the second transport path is retained in the fourth transport path, and the paper sent from the first transport path is A mechanism is disclosed in which the paper sent to the second conveyance path is overlapped with the paper sent to downstream post-processing.

また、特許文献2(特許第3617936号公報)には、装置内部に設けられた後処理用トレイと、この後処理用トレイへ向けてシートを案内する搬送路と、シートを搬送するシート搬送手段を有し、シートを上記後処理用トレイにスタックし、綴じ処理等の処理をした後排紙トレイに排出するシート処理装置において、上記搬送路の所定位置でシートの逆流ができないように形成されているとともに、該所定位置の下流に分岐路が形成され、上記シート搬送手段を制御する制御手段を有し、上記シート搬送手段は上記制御手段による制御により、上記所定位置を通り過ぎたシートを逆流させて上記分岐路に待機させることが可能であり、かつ、該分岐路に待機させた1枚又は複数枚のシートと次に搬送されるシートを重ね合わせ状態で上記後処理用トレイへ向けて搬送するようにした発明が開示されている。   Patent Document 2 (Japanese Patent No. 3617936) discloses a post-processing tray provided inside the apparatus, a conveyance path that guides the sheet toward the post-processing tray, and a sheet conveyance unit that conveys the sheet. In a sheet processing apparatus that stacks sheets on the post-processing tray, performs binding processing, etc., and then discharges the sheets to a paper discharge tray, the sheet is formed so that the sheet cannot flow backward at a predetermined position on the conveyance path. In addition, a branch path is formed downstream of the predetermined position, and control means for controlling the sheet conveying means is provided. The sheet conveying means is controlled by the control means to reversely flow the sheet that has passed the predetermined position. It is possible to wait on the branch path, and the sheet or sheets to be transported on the branch path and the next conveyed sheet are overlapped with each other. Invention which is adapted to convey toward the processing tray is disclosed.

さらに、特許文献3(特許第4355255号公報)には、前段装置から搬入される用紙を受け入れ口から処理トレイへ案内する第1の搬送路と、前記第1の搬送路から分岐し、一時的に前記用紙を退避させる第2の搬送路と、前記第1の搬送路に設けられ、前記用紙を前記処理トレイ側の方向に搬送する第1の搬送手段と、前記第1の搬送路に設けられ、正回転することによって前記処理トレイ側の方向に前記用紙を搬送し、逆回転させることによって前記処理トレイ側の方向とは逆方向に用紙を搬送する第2の搬送手段と、前記用紙が前記逆方向へ搬送されるときに当該用紙を前記第2の搬送路へ案内する切り替え手段と、を有し、前記第1の搬送手段と前記第2の搬送手段は前記切り替え手段を挟んで前記第1の搬送手段が前記受け入れ口側に、前記第2の搬送手段が処理トレイ側にそれぞれ設置され、前記第2の搬送路に一時的に退避していた先行する用紙を後行する用紙と重ね合わせて搬送する機能を有する用紙処理装置において、前記第2の搬送手段によって前記先行する用紙を前記逆方向へ搬送させ、前記切り替え手段によって前記先行する用紙を前記第2の搬送路へ案内したとき、前記第2の搬送手段によって前記先行する用紙を保持した状態で前記第2の搬送手段を停止させて前記後行する用紙が重ね合わされるまで待機させ、前記後行する用紙が前記第2の搬送手段に到達する直前で前記第2の搬送手段を正回転させて先行する用紙と後行する用紙を重ね合わせて処理トレイ側の方向へ搬送する制御手段を備えた発明が開示されている。   Further, in Patent Document 3 (Japanese Patent No. 4355255), a first conveyance path that guides a sheet carried from a preceding apparatus from a receiving port to a processing tray, and a branch from the first conveyance path are temporarily included. A second transport path for retracting the paper and a first transport means provided in the first transport path for transporting the paper in the direction toward the processing tray, and provided in the first transport path. A second conveying means for conveying the sheet in a direction opposite to the direction on the processing tray side by rotating in the reverse direction and conveying the sheet in a direction opposite to the direction on the processing tray side by rotating in the reverse direction; Switching means for guiding the paper to the second transport path when transported in the reverse direction, and the first transport means and the second transport means sandwich the switching means between The first conveying means receives the acceptance The second conveying means is installed on the processing tray side on the mouth side, and has a function of superimposing and conveying the preceding paper temporarily retracted to the second conveying path with the following paper. In the sheet processing apparatus, when the preceding sheet is conveyed in the reverse direction by the second conveying unit and the preceding sheet is guided to the second conveying path by the switching unit, the second conveying unit To stop the second conveying means while holding the preceding paper, and wait until the following paper is superimposed, immediately before the following paper reaches the second conveying means. An invention is disclosed that includes a control unit that rotates the second conveying unit forward to superimpose the preceding sheet and the following sheet and conveys the sheet in the direction toward the processing tray.

前記特許文献1ないし3には、用紙を重ね合わせて搬送する技術が開示されている。一方、折り跡付け処理には一旦停止し、その位置で処理するので、処理に一定の時間が必要であり、生産性に限界がある。特におり折り跡がプレス方式で付けられるものであると生産性に関わる条件が厳しくなる。   Patent Documents 1 to 3 disclose a technique for transporting sheets in a superimposed manner. On the other hand, since the crease process is temporarily stopped and processed at that position, a certain time is required for the process, and the productivity is limited. In particular, when the crease marks are applied by the press method, the conditions related to productivity become severe.

しかし、先行技術は生産性を維持、若しくは高めることは配慮されておらず、後処理している最中に次用紙を受け入れ生産性を維持することはできない。   However, the prior art does not consider maintaining or increasing productivity, and cannot accept the next sheet during post-processing and maintain productivity.

そこで、本発明が解決しようとする課題は、折り跡処理を行う最中に次用紙を受け入れ、生産性を維持若しくは高めることができるようにすることにある。   Therefore, the problem to be solved by the present invention is to accept the next sheet during the folding process so that productivity can be maintained or enhanced.

前記課題を解決するため、第1の手段は、用紙搬送経路に折り跡付け手段を有し、搬送手段によって搬送される用紙に前記折り跡付け手段によって折り跡を付ける折り跡付け装置において、前段から搬送されてくる用紙を前記跡付け手段位置に搬送し、後段に搬送する第1の搬送経路と、前記第1の搬送経路から用紙搬送方向と逆方向に分岐した第2の搬送経路と、前記第1の搬送経路から第2の搬送経路に導く分岐手段と、前記搬送手段、前記折り跡付け手段、及び前記分岐手段を制御する制御手段と、を備え、前記制御手段は、前記跡付け手段位置に用紙を搬送する際、先に搬送されてくる前用紙の後端が前記分岐手段を超えた後、当該前用紙を逆方向に搬送し、前記分岐手段から前記第2の搬送経路に前用紙の後端部を搬送した後、折り跡付け位置が前記折り跡付け手段位置に対応するように用紙の搬送を停止させ、前記搬送手段によって前用紙を逆方向に搬送している間、あるいは前記折り跡付け手段によって前用紙に折り跡を付けている間に搬送されてくる次用紙が前記折り跡付け手段に達する前に前用紙を折り跡付け手段から排紙することを特徴とする。   In order to solve the above-described problem, the first means includes a crease forming means in the paper transport path, and a crease forming apparatus for making a crease by the crease attaching means on the paper transported by the transport means. A first transport path that transports the paper transported from the first transport path to a position of the marking means, and a second transport path branched from the first transport path in a direction opposite to the paper transport direction; A branching unit that leads from the first transporting path to the second transporting path, and a control unit that controls the transporting unit, the crease marking unit, and the branching unit, and the control unit includes the marking unit. When transporting the sheet to the position of the means, after the trailing edge of the front sheet transported first exceeds the branching unit, the front sheet is transported in the reverse direction, and the branching unit transfers to the second transport path. After transporting the rear edge of the front paper, The conveyance of the sheet is stopped so that the marking position corresponds to the position of the crease marking unit, and the front sheet is conveyed in the reverse direction by the conveyance unit, or the fold is creased on the front sheet by the crease marking unit. The preceding sheet is discharged from the crease unit before the next sheet conveyed while the mark reaches the crease unit.

第2の手段は、用紙搬送経路に折り跡付け手段を有し、搬送手段によって搬送される用紙に前記折り跡付け手段によって折り跡を付ける折り跡付け装置において、前段から搬送されてくる用紙を前記跡付け手段位置に搬送し、後段に搬送する第1の搬送経路と、前記第1の搬送経路の上流側から分岐し、下流側で合流する第3及び第4の搬送経路と、前記第1の搬送経路から第3あるいは第4の搬送経路を選択して用紙を導く分岐手段と、前記搬送手段、前記折り跡付け手段、及び前記分岐手段を制御する制御手段と、を備え、前記制御手段は、前記分岐手段を制御し、前記跡付け手段位置に用紙を搬送する際、先に搬送されてくる前用紙を第3又は第4の搬送経路の一方へ搬送させ、次に搬送されてくる次用紙を第3又は第4の搬送経路の他方へ搬送させ、前記一方の搬送経路から搬送されてくる用紙を折り跡付け位置が前記折り跡付け手段位置に対応するように停止させ、前記搬送手段によって次用紙を搬送している間、あるいは前記折り跡付け手段によって前用紙に折り跡を付けている間に搬送されてくる次用紙が前記折り跡付け手段に達する前に前用紙を折り跡付け手段から排紙することを特徴とする。   The second means has a crease means in the paper conveyance path, and in the crease applying apparatus for making a crease by the crease means on the paper conveyed by the conveyance means, the paper conveyed from the preceding stage A first transport path transported to the marking means position and transported to the subsequent stage; third and fourth transport paths branching from the upstream side of the first transport path and joining on the downstream side; A branching unit that selects a third or fourth transporting route from one transporting route and guides the paper; and a control unit that controls the transporting unit, the crease attaching unit, and the branching unit, The means controls the branching means, and when the sheet is conveyed to the marking means position, the preceding sheet conveyed first is conveyed to one of the third or fourth conveyance path, and then conveyed. The next sheet of paper in the third or fourth transport path While the sheet being conveyed from the one conveyance path is stopped so that the crease position corresponds to the position of the crease unit, and the next sheet is being conveyed by the conveyance unit, or The preceding sheet is discharged from the crease unit before the next sheet conveyed while the crease unit makes a crease on the previous sheet reaches the crease unit.

第3の手段は、第1又は第2の手段は、前記前用紙の後端部と、前記次用紙の先端部が重ねられた状態で前記折り跡付け手段側の分岐部を通過することを特徴とする。   The third means is that the first or second means passes through the branch portion on the crease attaching means side in a state where the rear end portion of the front sheet and the front end portion of the next sheet are overlapped. Features.

第4の手段は、第3の手段において、前記分岐部と前記折り跡付け手段との間に搬送手段を備え、前記次用紙の先端部が重ねられた状態で前記折り跡付け手段側の分岐部を通過する際、前記搬送手段のニップは開放されていることを特徴とする。   The fourth means includes a conveying means between the branch portion and the crease attaching means in the third means, and the branch on the crease attaching means side in a state where the leading end portion of the next sheet is overlapped. The nip of the conveying means is opened when passing through the section.

第5の手段は、第3の手段において、前記分岐部と前記折り跡付け手段との間に搬送手段を備え、前記次用紙の先端部が重ねられた状態で前記折り跡付け手段側の分岐部を通過する際、前記搬送手段は用紙に連れ回りすることを特徴とする。   A fifth means includes a conveying means between the branch portion and the crease attaching means in the third means, and the branch on the crease attaching means side in a state where the leading end portion of the next sheet is overlapped. When passing through the section, the conveying means rotates with the paper.

第6の手段は、第1ないし第5の手段に係る折り跡付け装置と、用紙に画像を形成する画像形成装置と、を備えた画像形成システムを特徴とする。   A sixth means is characterized by an image forming system including a crease forming apparatus according to the first to fifth means and an image forming apparatus for forming an image on a sheet.

第7の手段は、用紙搬送経路に折り跡付け手段を有し、搬送手段によって搬送される用紙に前記折り跡付け手段によって折り跡を付ける折り跡付け装置の用紙搬送方法において、前段から搬送されてくる用紙を前記跡付け手段位置に搬送し、後段に搬送する第1の搬送経路と、前記第1の搬送経路から用紙搬送方向と逆方向に分岐した第2の搬送経路と、前記第1の搬送経路から第2の搬送経路に導く分岐手段と、を備え、前記跡付け手段位置に用紙を搬送する際、先に搬送されてくる前用紙の後端が前記分岐手段を超えた後、当該前用紙を逆方向に搬送し、前記分岐手段から前記第2の搬送経路に前用紙の後端部を搬送した後、折り跡付け位置が前記折り跡付け手段位置に対応するように用紙の搬送を停止させ、前記搬送手段によって前用紙を逆方向に搬送している間、あるいは前記折り跡付け手段によって前用紙に折り跡を付けている間に搬送されてくる次用紙が前記折り跡付け手段に達する前に前用紙を折り跡付け手段から排紙することを特徴とする。   The seventh means has a crease forming means in the paper transport path, and is transported from the preceding stage in the paper transport method of the crease device for making a crease by the crease means on the paper transported by the transport means. A first transport path for transporting the incoming paper to the position of the marking means and transporting it to the subsequent stage; a second transport path branched from the first transport path in a direction opposite to the paper transport direction; and the first Branching means that leads from the transport path to the second transport path, and when the sheet is transported to the marking means position, after the trailing edge of the preceding sheet transported first exceeds the branching means, After the front sheet is conveyed in the reverse direction and the trailing edge of the front sheet is conveyed from the branching unit to the second conveyance path, the crease position corresponds to the crease unit position. Stop the transport and use the previous means by the transport means The front sheet is folded before the next sheet conveyed while the sheet is being conveyed in the reverse direction or while the crease is making a crease on the previous sheet. The sheet is discharged from the means.

第8の手段は、用紙搬送経路に折り跡付け手段を有し、搬送手段によって搬送される用紙に前記折り跡付け手段によって折り跡を付ける折り跡付け装置において、前段から搬送されてくる用紙を前記跡付け手段位置に搬送し、後段に搬送する第1の搬送経路と、前記第1の搬送経路の上流側から分岐し、下流側で合流する第3及び第4の搬送経路と、前記第1の搬送経路から第3あるいは第4の搬送経路を選択して用紙を導く分岐手段と、を備え、前記跡付け手段位置に用紙を搬送する際、先に搬送されてくる前用紙を第3又は第4の搬送経路の一方へ搬送させ、次に搬送されてくる次用紙を第3又は第4の搬送経路の他方へ搬送させ、前記一方の搬送経路から搬送されてくる用紙を折り跡付け位置が前記折り跡付け手段位置に対応するように停止させ、前記搬送手段によって次用紙を搬送している間、あるいは前記折り跡付け手段によって前用紙に折り跡を付けている間に搬送されてくる次用紙が前記折り跡付け手段に達する前に前用紙を折り跡付け手段から排紙することを特徴とする。   The eighth means has a crease means in the paper conveyance path, and in the crease applying apparatus for making a crease by the crease means on the paper conveyed by the conveyance means, the paper conveyed from the previous stage. A first transport path transported to the marking means position and transported to the subsequent stage; third and fourth transport paths branching from the upstream side of the first transport path and joining on the downstream side; Branching means for selecting the third or fourth transport path from one transport path and guiding the paper, and when transporting the paper to the position of the marking means, the previous paper transported first is third. Alternatively, the sheet is conveyed to one of the fourth conveying paths, the next sheet conveyed next is conveyed to the other of the third or fourth conveying path, and the sheet conveyed from the one conveying path is creased. The position corresponds to the position of the crease means Before stopping the next sheet conveyed by the conveying means or before the next sheet conveyed while making a crease on the previous sheet by the crease attaching means reaches the crease means The front sheet is discharged from the crease forming means.

なお、後述の実施形態では、搬送手段は符号1a,1b,1c,1d,2に、折り跡付け手段は跡付け部材6及び受け台7に、第1の搬送経路はメイン経路MPに、第2の搬送経路はスイッチバック経路SBに、分岐手段は符号t1,t2に、制御手段はCPU_A1に、折り跡付け装置は符号Aに、第3の搬送経路は第1の搬送路SBaに、第4の搬送経路は第2の搬送路SBbに、分岐部は分岐部SB1,SB2に、画像形成装置は符号PRに、それぞれ対応する。   In the embodiment described later, the conveying means is denoted by reference numerals 1a, 1b, 1c, 1d, and 2, the crease marking means is denoted by the marking member 6 and the cradle 7, the first conveying path is denoted by the main path MP, 2 is the switchback path SB, the branching means is at t1 and t2, the control means is at CPU_A1, the crease device is at reference A, the third conveying path is at the first conveying path SBa, The transport path 4 corresponds to the second transport path SBb, the branch section corresponds to the branch sections SB1 and SB2, and the image forming apparatus corresponds to the code PR.

本発明によれば、前述のように構成されているので、折り跡処理を行う最中に次用紙を受け入れ、生産性を維持若しくは高めることができる。   According to the present invention, since it is configured as described above, it is possible to accept the next sheet during the folding process and maintain or improve productivity.

本発明の実施形態における画像形成システムの概略構成を示す図である。1 is a diagram showing a schematic configuration of an image forming system in an embodiment of the present invention. 折り処理を伴う画像形成システムの一連の動作を示す説明図で、用紙が折り跡付け装置に搬入されるときの状態を示す。It is explanatory drawing which shows a series of operation | movement of an image forming system with a folding process, and shows a state when a paper is carried in into a crease forming apparatus. 折り処理を伴う画像形成システムの一連の動作を示す説明図で、用紙先端が下流側の搬送手段の直前まで搬送されてきたときの状態を示す。FIG. 9 is an explanatory diagram showing a series of operations of the image forming system with folding processing, and shows a state when the leading edge of the sheet has been conveyed to just before the downstream conveying means. 折り処理を伴う画像形成システムの一連の動作を示す説明図で、折り跡付け処理が実行されているときの状態を示す。It is explanatory drawing which shows a series of operation | movement of an image forming system with a folding process, and shows a state when the crease forming process is performed. 折り処理を伴う画像形成システムの一連の動作を示す説明図で、折り跡を付けられた用紙が用紙後処理装置に搬入され、2枚目の用紙が折り跡付け装置に搬入されているときの状態を示す。FIG. 6 is an explanatory diagram showing a series of operations of the image forming system with folding processing when a creased sheet is carried into a sheet post-processing apparatus and a second sheet is carried into a crease apparatus; Indicates the state. 折り処理を伴う画像形成システムの一連の動作を示す説明図で、2枚目の用紙先端が折り跡付け部の前で突当て板に突き当てられたときの状態を示す。It is explanatory drawing which shows a series of operation | movement of an image forming system with a folding process, and shows a state when the front end of the 2nd sheet | seat is abutted against the abutting board in front of the crease forming part. 折り処理を伴う画像形成システムの一連の動作を示す説明図で、3枚目の用紙に折り跡付け処理が行われているときの状態を示す。It is explanatory drawing which shows a series of operation | movement of an image forming system with a folding process, and shows the state when the crease | folding process is performed to the 3rd sheet | seat. 折り処理を伴う画像形成システムの一連の動作を示す説明図で、最終枚目の用紙が中折り処理トレイに集積されたときの状態を示す。It is explanatory drawing which shows a series of operation | movement of an image forming system with a folding process, and shows the state when the last sheet | seat is integrated | stacked on the middle folding process tray. 折り処理を伴う画像形成システムの一連の動作を示す説明図で、図8の状態から用紙束が中折り位置に移動したときの状態を示す。FIG. 9 is an explanatory diagram showing a series of operations of the image forming system with folding processing, and shows a state when the sheet bundle is moved from the state of FIG. 8 to the center folding position. 折り処理を伴う画像形成システムの一連の動作を示す説明図で、図9の状態から中折り処理が実行されているときの状態を示す。It is explanatory drawing which shows a series of operation | movement of an image forming system accompanied by a folding process, and shows the state when the middle folding process is performed from the state of FIG. 折り処理を伴う画像形成システムの一連の動作を示す説明図で、折りローラにより中折りが行われながら排紙される状態を示す。It is explanatory drawing which shows a series of operation | movement of an image forming system accompanied by a folding process, and shows the state discharged | emitted while performing a middle folding by a folding roller. 折り処理を伴う画像形成システムの一連の動作を示す説明図で、中折りされた用紙束が積載トレイに排紙されたときの状態を示す。FIG. 5 is an explanatory diagram showing a series of operations of the image forming system with folding processing, and shows a state when a folded sheet bundle is discharged onto a stacking tray. 折り跡付け機構の概略構成を示す図で、跡付け部材が受け台から離間した状態を示す。It is a figure which shows schematic structure of a crease marking mechanism, and shows the state in which the marking member was separated from the cradle. 折り跡付け機構の概略構成を示す図で、跡付け部材が受け台に圧接し、折り跡を付けている状態を示す。It is a figure which shows schematic structure of a crease marking mechanism, and shows the state which the scribe member press-contacts a receiving stand and has made a crease. 図13の状態を正面から見た概略図である。It is the schematic which looked at the state of FIG. 13 from the front. 実施例1に係る折り跡付け装置内の搬送路の構成を示す図である。It is a figure which shows the structure of the conveyance path in the crease apparatus which concerns on Example 1. FIG. 分岐手段としての分岐爪とその駆動機構を示す要部構成図である。It is a principal part block diagram which shows the branch nail | claw as a branch means, and its drive mechanism. 分岐手段としての分岐爪とその駆動機構の他の例を示す要部構成図である。It is a principal part block diagram which shows the other example of the branch nail | claw as a branch means, and its drive mechanism. スイッチバック経路を使用して用紙を搬送し、折り跡を付ける動作の動作を示す動作説明図で、前用紙の先端部が折り跡付け装置の分岐部を通過した直後の状態を示す。FIG. 9 is an operation explanatory view showing an operation of conveying a sheet using a switchback path and making a crease, and shows a state immediately after the leading edge of the front sheet passes through a branching portion of the crease forming apparatus. スイッチバック経路を使用して用紙を搬送し、折り跡を付ける動作の動作を示す動作説明図で、前用紙の後端部が折り跡付け装置の分岐部を通過した直後の状態を示す。FIG. 7 is an operation explanatory diagram showing an operation of conveying a sheet using a switchback path and making a crease, and shows a state immediately after the rear end portion of the front sheet passes through a branching portion of the crease device. スイッチバック経路を使用して用紙を搬送し、折り跡を付ける動作の動作を示す動作説明図で、前用紙の後端部がスイッチバック経路側に搬送されるときの状態を示す。FIG. 9 is an operation explanatory view showing an operation of conveying a sheet using a switchback path and making a crease, and shows a state when the rear end portion of the front sheet is conveyed to the switchback path side. スイッチバック経路を使用して用紙を搬送し、折り跡を付ける動作の動作を示す動作説明図で、前用紙に折り跡付け処理が施され、後行する次用紙が分岐部近傍まで搬送されてきたときの状態を示す。FIG. 5 is an operation explanatory diagram illustrating an operation of conveying a sheet by using a switchback path and making a crease. A crease process is performed on the preceding sheet, and the next sheet to be followed is conveyed to the vicinity of the branch portion. The state when スイッチバック経路を使用して用紙を搬送し、折り跡を付ける動作の動作を示す動作説明図で、前用紙に対する折り跡付け処理が終了し、折り跡付け部材が後退するときの状態を示す。FIG. 9 is an operation explanatory view showing an operation of conveying a sheet using a switchback path and making a crease, and shows a state when the crease process for the previous sheet is finished and the crease member is retracted. スイッチバック経路を使用して用紙を搬送し、折り跡を付ける動作の動作を示す動作説明図で、前用紙に対する折り跡付け処理が終了し、次用紙の先端が前用紙の後端の下側に重なったときの状態を示す。In the operation explanatory diagram showing the operation of conveying the paper using the switchback path and making the crease, the crease processing for the front paper is finished, and the leading edge of the next paper is below the trailing edge of the front paper The state when it overlaps with is shown. スイッチバック経路を使用して用紙を搬送し、折り跡を付ける動作の動作を示す動作説明図で、前用紙に対する折り跡付け処理が終了し、次用紙の先端と前用紙の後端が重なって搬送されるときの状態を示す。The operation explanatory diagram showing the operation of conveying the paper using the switchback path and making the crease. The crease processing for the previous paper is completed, and the leading edge of the next paper and the trailing edge of the previous paper overlap. The state when being conveyed is shown. スイッチバック経路を使用して用紙を搬送し、折り跡を付ける動作の動作を示す動作説明図で、前用紙が排紙され、次用紙が図20の位置に搬送されたときの状態を示す。FIG. 9 is an operation explanatory diagram showing an operation of conveying a sheet using a switchback path and making a crease, and shows a state when a previous sheet is discharged and a next sheet is conveyed to the position of FIG. スイッチバック経路を使用して用紙を搬送し、折り跡を付ける動作の動作を示す動作説明図で、前用紙が排紙され、次用紙が図21の位置に搬送されたときの状態を示す。FIG. 9 is an operation explanatory diagram showing an operation of conveying a sheet using a switchback path and making a crease, and shows a state when a previous sheet is discharged and a next sheet is conveyed to the position of FIG. 搬送手段を構成する搬送ローラが離間可能な構成を示す図である。It is a figure which shows the structure which can separate the conveyance roller which comprises a conveyance means. 図28の搬送手段の構成及び動作を示す図で、搬送手段が搬送位置にあるときの状態を示す。It is a figure which shows the structure and operation | movement of a conveyance means of FIG. 28, and shows a state when a conveyance means exists in a conveyance position. 図28の搬送手段の構成及び動作を示す図で、搬送手段が離間位置にあるときの状態を示す。It is a figure which shows the structure and operation | movement of a conveyance means of FIG. 28, and shows a state when a conveyance means exists in a separation position. 離間可能な搬送手段を使用して搬送するときの動作説明図で、前用紙の下側に次用紙が重なったときの状態を示す。It is operation | movement explanatory drawing when conveying using the conveyance means in which separation is possible, and the state when the next sheet has overlapped on the lower side of the previous sheet is shown. 離間可能な搬送手段を使用して搬送するときの動作説明図で、前用紙の下側に次用紙が重なって搬送されるときの状態を示す。It is operation | movement explanatory drawing when conveying using the separation | separation conveyance means, and shows the state when the next sheet is conveyed by overlapping the lower side of the previous sheet. 実施例2に係る折り跡付け装置の概略構成を示す図である。It is a figure which shows schematic structure of the crease forming apparatus which concerns on Example 2. FIG. 実施例2における動作を説明するための動作説明図で、前用紙が折り跡付け装置に進入する直前の状態を示す。FIG. 10 is an operation explanatory diagram for explaining the operation in the embodiment 2 and shows a state immediately before the front sheet enters the crease forming apparatus. 実施例2における動作を説明するための動作説明図で、前用紙が折り跡付け装置の第1の搬送路に進入したときの状態を示す。FIG. 9 is an operation explanatory diagram for explaining the operation in the embodiment 2 and shows a state when the front sheet enters the first conveyance path of the crease forming apparatus. 実施例2における動作を説明するための動作説明図で、前用紙が折り跡付け処理を行っているときに、第2の搬送路に次用紙が進入したときの状態を示す。FIG. 10 is an operation explanatory diagram for explaining the operation in the embodiment 2 and shows a state when the next sheet enters the second conveyance path when the previous sheet is performing the crease forming process. 実施例2における動作を説明するための動作説明図で、前用紙の折り跡付け処理が終了し、次用紙の先端が前用紙の後端の下側に位置したときの状態を示す。FIG. 9 is an operation explanatory diagram for explaining the operation in Embodiment 2 and shows a state when the front sheet folding process is completed and the leading edge of the next sheet is positioned below the trailing edge of the preceding sheet. 実施例2における動作を説明するための動作説明図で、前用紙の折り跡付け処理が終了して搬送され、次用紙の先端が前用紙の後端の下側に重なって搬送されている状態を示す。FIG. 10 is an operation explanatory diagram for explaining the operation in the second embodiment, in which the front sheet folding process is completed and conveyed, and the leading edge of the next sheet is conveyed under the trailing edge of the preceding sheet. Indicates. 実施例2における動作を説明するための動作説明図で、前用紙が排紙され、次用紙に折り跡付け処理が行われているときの状態を示す。FIG. 9 is an operation explanatory diagram for explaining the operation in the embodiment 2 and shows a state when a previous sheet is discharged and a crease forming process is performed on the next sheet. 実施例2において搬送手段を構成する搬送ローラが離間可能な構成を示す図である。FIG. 10 is a diagram illustrating a configuration in which a transport roller that configures a transport unit can be separated in Embodiment 2. 実施例2において離間可能な搬送手段を用いて搬送するときの動作説明図で、前用紙に折り跡付け処理が行われ、前用紙の後端の下側に次用紙の先端が重なっているときの状態を示す図である。FIG. 9 is an operation explanatory diagram when transporting using a separation unit that can be separated in the second exemplary embodiment, when a crease process is performed on the front sheet, and the leading end of the next sheet overlaps below the rear end of the front sheet It is a figure which shows the state of. 実施例2において離間可能な搬送手段を用いて搬送するときの動作説明図で、前用紙に折り跡付け処理が終了し、前用紙の後端の下側に次用紙の先端が重なって搬送されている状態を示す図である。FIG. 9 is an operation explanatory diagram when transporting using a transportable unit that can be separated in the second embodiment, in which the crease process is finished on the front sheet, and the leading edge of the next sheet is transported with the leading edge of the next sheet overlapping the lower end of the front sheet. FIG. 折り跡付け装置、折り処理を行う折り処理装置、及び画像形成装置からなる画像形成システムの制御構成を示すブロック図である。2 is a block diagram illustrating a control configuration of an image forming system including a crease forming apparatus, a folding processing apparatus that performs a folding process, and an image forming apparatus. FIG. 実施例1における折り跡付け装置の制御手順を示すフローチャートである。3 is a flowchart illustrating a control procedure of the crease marking apparatus according to the first embodiment. 実施例1において搬送手段が離間可能な場合の折り跡付け装置の制御手順を示すフローチャートである。6 is a flowchart illustrating a control procedure of the crease forming apparatus when the conveying unit can be separated in the first embodiment. 実施例2における折り跡付け装置の制御手順を示すフローチャートである。10 is a flowchart illustrating a control procedure of the crease marking apparatus according to the second embodiment. 実施例2において搬送手段が離間可能な場合の折り跡付け装置の制御手順を示すフローチャートである。12 is a flowchart illustrating a control procedure of the crease forming apparatus when the conveying unit can be separated in the second embodiment.

連続して搬送されてくる用紙を受け入れ、用紙毎に一定の処理時間が必要な折り跡付け処理を行うと、後続紙との間隔が詰まってしまう場合や、後続紙が追いついてしまう場合があるが、本実施形態では、折り跡付け処理終了後、再び受け入れ時の用紙間隔まであけることが可能であり、その結果、生産性を維持しつつ連続して折り跡付け処理を行うことができる。
以下、本発明の実施形態について、図面を参照しながら説明する。
When receiving continuously conveyed paper and performing a crease process that requires a certain processing time for each paper, the gap between the paper and the subsequent paper may be clogged or the subsequent paper may catch up. However, in the present embodiment, after the crease process is completed, it is possible to leave the paper interval at the time of acceptance again. As a result, the crease process can be continuously performed while maintaining productivity.
Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図1は本発明の実施形態における画像形成システムの概略構成を示す図である。本画像形成システムは、用紙に画像を形成する画像形成装置PR、筋付けを付ける筋付け装置A、及び折り処理(後処理)を行う折り処理装置Bから基本的に構成されている。   FIG. 1 is a diagram showing a schematic configuration of an image forming system according to an embodiment of the present invention. This image forming system basically includes an image forming apparatus PR that forms an image on a sheet, a creasing apparatus A that performs scoring, and a folding processing apparatus B that performs folding processing (post-processing).

折り跡付け装置Aは第1及び第2の搬送手段1,2と折り跡付け機構Cを備え、折り跡付け機構Cは跡付け部材6及び受け台7から構成され、跡付け部材6と受け台7で用紙を挟み込むことにより折り跡を付ける。折り跡装置Aで折り跡が付けられた後、用紙は下流の折り処理装置Bへ送られる。折り処理装置Bは第3ないし第5の搬送手段3,4,5、中折り装置D、及び積載トレイ12を備えている。なお、搬送手段は、本実施形態では搬送ローラによって構成されている。   The crease marking apparatus A includes first and second transport means 1 and 2 and a crease marking mechanism C. The crease marking mechanism C is composed of a mark marking member 6 and a cradle 7. A crease is made by sandwiching the paper with the base 7. After the crease is made by the crease device A, the sheet is sent to the fold processing device B downstream. The folding processing device B includes third to fifth transport means 3, 4, 5, a middle folding device D, and a stacking tray 12. In this embodiment, the conveying means is constituted by a conveying roller.

画像形成装置PRはスキャナ、PCなどから入力された画像データを用紙上に可視像として顕像化して出力するもので、電子写真方式、液滴吐出方式などの公知の作像エンジンが使用される。   The image forming apparatus PR visualizes and outputs image data input from a scanner, PC, etc. as a visible image on paper, and uses a known image forming engine such as an electrophotographic method or a droplet discharge method. The

折り跡付け装置Aは搬送機構と折り跡付け機構からなり、折り跡付け機構は折り跡付け部材及び受け台を備え、折り跡付け部材と受け台で用紙を挟み込むことにより直線状の折り跡が付けられる。折り跡付け部材の受け台に対向する端面には跡を付けるための刃(クリース刃−凸刃)が用紙搬送方向の直交する方向に直線状に設けられている。クリース刃は先端が尖った刃形状に形成されている。一方、受け台の前記クリース刃と対向する面にはクリース刃の先端縁が嵌り込むような折り跡付け溝(凹刃)が切溝されている。このような形状に両者が形成されていることから、用紙を挟み込んだときに、先端形状(凸刃)と溝形状(凹刃)による折り跡が形成される。   The crease device A includes a conveyance mechanism and a crease mechanism. The crease mechanism includes a crease member and a cradle, and a linear crease is formed by sandwiching a sheet between the crease member and the cradle. Attached. Blades (crease blades-convex blades) for making marks are provided in a straight line in the direction perpendicular to the paper transport direction on the end face of the crease-bearing member facing the cradle. The crease blade is formed in a blade shape with a sharp tip. On the other hand, on the surface of the cradle facing the crease blade, a crease groove (concave blade) into which the tip edge of the crease blade fits is cut. Since both are formed in such a shape, when the sheet is sandwiched, a crease is formed by the tip shape (convex blade) and the groove shape (concave blade).

折り処理装置Bは、折り処理を行う中折り装置Dを備え、折り跡付け装置Aによって折り跡が付けられた用紙が搬入され、当該用紙が搬送機構の第1ないし第3の搬送手段3,4,5によって中折り装置Dに導かれる。   The folding processing device B includes an intermediate folding device D that performs folding processing, and the sheet on which the crease is made by the crease forming apparatus A is carried in, and the sheet is transferred to the first to third transport means 3 and 3 of the transport mechanism. 4 and 5 lead to the folding device D.

中折り装置Dは中折り処理トレイ10、中折り処理トレイ10の下端(搬送方向最上流側)に設けられた後端フェンス11、折り跡に沿って折り込む折りプレート8及び折りローラ対9、並びに積載トレイ12を備えている。後端フェンス11は用紙の搬送方向の整合を行うもので、図示しない戻しローラによって中折り処理トレイ10に排紙された用紙の後端を強制的に後端フェンス11に押し付け、用紙の位置を揃える。また、図示しないジョガーフェンスによって搬送方向に直交する方向の整合も行われる。   The middle folding device D includes a middle folding processing tray 10, a rear end fence 11 provided at the lower end (the most upstream side in the conveying direction) of the middle folding processing tray 10, a folding plate 8 and a folding roller pair 9 that are folded along a fold, and A loading tray 12 is provided. The trailing edge fence 11 aligns the sheet conveyance direction. The trailing edge of the sheet discharged to the middle folding processing tray 10 is forcibly pressed against the trailing edge fence 11 by a return roller (not shown), and the position of the sheet is adjusted. Align. Further, alignment in a direction orthogonal to the transport direction is also performed by a jogger fence (not shown).

折りプレート8は整合された用紙束に対して自身の先端縁を前記折り跡に沿って押し当て、折りローラ対9のニップに押し込む。これにより、用紙束は折りローラ対9のニップに押し込まれ、当該ニップで折り跡が付けられる。中綴じ処理を伴う場合には、筋を付ける部分に図示しない綴じ装置によって綴じ処理を行った後、この折り処理、所謂2つ折りが実行される。2つ折りされた用紙束は積載トレイ12に排紙され、積載される。   The folding plate 8 presses its leading edge against the aligned sheet bundle along the fold and pushes it into the nip of the pair of folding rollers 9. As a result, the sheet bundle is pushed into the nip of the pair of folding rollers 9, and a crease is made at the nip. In the case where the saddle stitching process is involved, the folding process, so-called bi-folding, is performed after the binding process is performed on a portion to be streaked by a binding device (not shown). The folded sheet bundle is discharged to the stacking tray 12 and stacked.

図2ないし図12は、この折り処理を伴う画像形成システムの一連の動作を示す説明図である。この画像形成システムでは、画像形成装置PRにおいて画像形成された用紙P1が筋付け装置A内に搬送され、折り跡を付ける位置で停止する(図2、図3)。図4に示すように用紙P1の先端が第2の搬送手段2のニップに当接した位置で停止すると、跡付け部材6を下降させ、跡付け部材6と受け台7によって用紙P1を挟む。これにより用紙P1に折り跡が付けられる(図4)。   2 to 12 are explanatory diagrams showing a series of operations of the image forming system accompanied with the folding process. In this image forming system, the sheet P1 on which an image is formed in the image forming apparatus PR is conveyed into the creasing apparatus A and stops at a position where a crease is made (FIGS. 2 and 3). As shown in FIG. 4, when the leading edge of the paper P <b> 1 stops at a position where it abuts on the nip of the second conveying means 2, the marking member 6 is lowered, and the paper P <b> 1 is sandwiched between the marking member 6 and the cradle 7. As a result, a crease is made on the paper P1 (FIG. 4).

その後、折り跡が付けられた用紙P1は折り処理装置Bへ搬送され(図5)、中折り処理トレイ10に一時収納される(図6)。上記の動作を所定枚数分繰り返し(図7)、所定枚数P1〜Pnの用紙束が収納されたら(図8)、後端フェンス11で用紙束を折り位置まで持ち上げて折り位置を合せ(図9)、折りプレート8を前進させて用紙に付けられている折り跡部分を押し、折りローラ対9のニップへ押し込んで折り処理を行い(図10)、積載トレイ12に排紙される(図11、図12)。この1冊の用紙束の作成工程が所定冊子数分繰り返され、順次積載トレイ12上に積載されていく。   Thereafter, the sheet P1 with the crease is conveyed to the folding processing apparatus B (FIG. 5) and temporarily stored in the middle folding processing tray 10 (FIG. 6). The above operation is repeated for a predetermined number of sheets (FIG. 7), and when a predetermined number of sheet bundles P1 to Pn are stored (FIG. 8), the rear end fence 11 lifts the sheet bundle to the folding position (FIG. 9). ), The folding plate 8 is advanced to push the crease portion attached to the sheet, and the folding plate 8 is pushed into the nip of the folding roller pair 9 to perform folding processing (FIG. 10), and is discharged to the stacking tray 12 (FIG. 11). , FIG. 12). The process of creating one sheet bundle is repeated for a predetermined number of booklets, and is sequentially stacked on the stacking tray 12.

図13及び図14は折り跡付け機構の概略構成を示す図である。同図において、折り跡付け機構Cの跡付け部材6は跡付け刃C7と取り付け台C6から構成され、跡付け刃C7と取り付け台C6は一体となって弾性材C5によって上方に弾性付勢され、取り付け台C6の上面でカムC4と接触している。カムC4は一対設けられ、駆動モータC1の駆動が減速伝達機構C2及び伝達機構C3によって伝達され、回転する。このカムC4は偏芯カムであり、両者が同期して回転することにより取り付け台C6と一体に跡付け刃C7を上下方向に駆動する。   13 and 14 are diagrams showing a schematic configuration of the crease forming mechanism. In the figure, the marking member 6 of the crease marking mechanism C is composed of a marking blade C7 and a mounting base C6, and the marking blade C7 and the mounting base C6 are elastically biased upward by an elastic material C5 as a unit. The cam C4 is in contact with the upper surface of the mounting base C6. A pair of cams C4 is provided, and the drive of the drive motor C1 is transmitted by the deceleration transmission mechanism C2 and the transmission mechanism C3 and rotates. The cam C4 is an eccentric cam, and the marking blade C7 is driven in the vertical direction integrally with the mounting base C6 by rotating both in synchronization.

跡付け刃C7と対向する位置には受け台C8が設置され、跡付け刃C7と受け台C8との間で用紙を挟むことにより用紙に折り跡が付けられる。図13は跡付け刃C7が最も上昇した位置で、用紙の受け入れ位置に対応し、図14は跡付け刃C7が最も下降した位置で、用紙への跡付け位置に対応する。図15は図13の状態を正面から見た概略図である。なお、図4に示した折り跡付け動作時には第1の搬送手段1のニップに用紙が保持されているが、跡付け刃C7の下降に伴って用紙に前進方向の力が加わると、第1の搬送手段1の軸部に設けられた図示しない一方向クラッチの作用により用紙の前進方向の移動を許容するようになっている。   A cradle C8 is installed at a position facing the marking blade C7, and the sheet is creased by sandwiching the sheet between the marking blade C7 and the cradle C8. FIG. 13 corresponds to the receiving position of the sheet at the position where the marking blade C7 is raised most, and FIG. 14 corresponds to the marking position on the sheet at the position where the marking blade C7 is lowered most. FIG. 15 is a schematic view of the state of FIG. 13 viewed from the front. Note that the sheet is held in the nip of the first conveying unit 1 during the folding operation shown in FIG. 4, but if a forward force is applied to the sheet as the marking blade C <b> 7 is lowered, the first sheet is held. The movement of the paper in the forward direction is allowed by the action of a one-way clutch (not shown) provided on the shaft portion of the conveying means 1.

前述のような折り跡付け装置Aの実施例として本実施形態では、2つの実施例を提示する。1つは1つのスイッチバック経路を設けた例であり、他の1つは2つの搬送経路を設けた例である。   In this embodiment, two examples are presented as examples of the crease forming apparatus A as described above. One is an example in which one switchback path is provided, and the other is an example in which two transport paths are provided.

図16は実施例1に係る折り跡付け装置A内の搬送路の構成を示す図である。
同図において、折り跡付け装置Aには、跡付け部材6及び受け台7の用紙搬送方向上流側にメイン経路MPとスイッチバック経路SB、及びメイン経路MPとスイッチバック経路SBとを切り替える分岐手段t1が設けられている。分岐手段t1は図17の要部構成図に示すように例えば分岐爪から構成され、モータMt1によって駆動される。また、分岐手段t1に対して同軸上に設けられたフィラーを検知センサSNt1で検知することにより、第1の位置が検出され、さらにモータMt1をパルス制御で駆動することにより第2の位置に分岐手段t1を移動させる構成になっている。
FIG. 16 is a diagram illustrating a configuration of a conveyance path in the crease marking apparatus A according to the first embodiment.
In the figure, the crease marking apparatus A includes a branching unit that switches the main path MP and the switchback path SB and the main path MP and the switchback path SB upstream of the marking member 6 and the cradle 7 in the sheet conveyance direction. t1 is provided. The branching means t1 is composed of, for example, a branching claw as shown in the main configuration diagram of FIG. 17, and is driven by a motor Mt1. Further, the first position is detected by detecting the filler provided coaxially with respect to the branching means t1 by the detection sensor SNt1, and further branched to the second position by driving the motor Mt1 by pulse control. The means t1 is moved.

また、図18に示すように分岐手段t1は弾性材SPt1によって常に第1の位置に位置するように弾性付勢され、ソレノイドSt1の駆動によって分岐手段t1第2の位置に移動するなどの構成としても良い。   Further, as shown in FIG. 18, the branching means t1 is elastically biased so as to be always located at the first position by the elastic material SPt1, and moved to the second position of the branching means t1 by driving the solenoid St1. Also good.

これらの構成によって分岐手段t1によってメイン経路MP側とスイッチバック経路SB側へ切り替えることができる。また、メイン経路MPとスイッチバック経路SBの分岐部より下流側に位置する搬送手段1b、2は搬送方向への回転と逆転が可能となっている。   With these configurations, it is possible to switch to the main path MP side and the switchback path SB side by the branching means t1. Further, the transport means 1b and 2 located downstream from the branching portion of the main path MP and the switchback path SB can be rotated and reversed in the transport direction.

図19ないし図27、図31及び図32はスイッチバック経路SBを使用して搬送するときの動作を示す動作説明図である。
図16のように構成すると、図19に示すように用紙Snが折り跡付け装置内に搬送されてきて、図20に示すように用紙Snの後端がメイン経路MPとスイッチバック経路SBの分岐点(本実施形態では、分岐手段t1の最下流側の直後)SB1を通過したとき、若しくはその分岐点上流に位置するセンサSN2を通過してから分岐手段t1をスイッチバック経路SB側へ切り替え、図21に示すように搬送手段1b、2を逆転させる。これにより用紙Snの後端がスイッチバック経路SBへ搬送され、用紙Snの後端がメイン経路MPからスイッチバック経路SBに退避する。次いで、用紙Snは折り跡付け処理する位置で停止し、その後、分岐手段t1は元の位置、つまりメイン経路MP側へ切り替えられる。
19 to 27, FIG. 31 and FIG. 32 are operation explanatory views showing operations when transporting using the switchback path SB.
When configured as shown in FIG. 16, the sheet Sn is conveyed into the crease device as shown in FIG. 19, and the rear end of the sheet Sn is branched between the main path MP and the switchback path SB as shown in FIG. When the point (in the present embodiment, immediately after the most downstream side of the branching unit t1) passes SB1, or after passing the sensor SN2 located upstream of the branching point, the branching unit t1 is switched to the switchback path SB side, As shown in FIG. 21, the conveying means 1b and 2 are reversed. As a result, the rear end of the sheet Sn is conveyed to the switchback path SB, and the rear end of the sheet Sn is retracted from the main path MP to the switchback path SB. Next, the sheet Sn stops at the position where the crease processing is performed, and then the branching unit t1 is switched to the original position, that is, the main path MP side.

次に、図22に示すように、用紙Snに跡付け部材6及び受け台7によって折り跡付け処理を行っている最中(停止中)に、次用紙Sn+1が搬送されてくる。通常であれば用紙Snの処理が終了するまで次用紙Sn+1は搬送停止、減速などして待機していなければ衝突してしまうが、用紙Snの後端がスイッチバック経路SBに退避しているため、図23に示すように、用紙Sn+1は用紙Snの下側に入り込んで衝突することなく搬送することができる。   Next, as shown in FIG. 22, the next sheet Sn + 1 is conveyed while the sheet Sn is being folded (stopped) by the marking member 6 and the cradle 7. Normally, the next sheet Sn + 1 will collide if it is not on standby until it stops processing, decelerates, etc. until the processing of the sheet Sn is completed, but the rear end of the sheet Sn is retracted to the switchback path SB. As shown in FIG. 23, the sheet Sn + 1 can be transported without entering and colliding with the lower side of the sheet Sn.

図24に示すように次用紙Sn+1の先端が搬送手段1bのニップに入る前に前用紙Snの折り跡付け処理が終了し、下流への搬送を開始すれば、図23及び図24に示すように搬送手段1bによって用紙Sn、Sn+1を共に下流へ搬送することができる。そして、図25に示すように前用紙Snの後端が搬送手段2のニップを超えてそのまま下流へ搬送され、図26に示すように次用紙Sn+1の後端が前用紙Snと同様に分岐点SB1の上流に位置するセンサSN2を通過した後に分岐手段t1をスイッチバック経路SB側へ切り替える。   As shown in FIG. 24, when the folding process of the previous sheet Sn is completed before the leading edge of the next sheet Sn + 1 enters the nip of the transport unit 1b and the downstream transport is started, as shown in FIGS. In addition, both the sheets Sn and Sn + 1 can be conveyed downstream by the conveying means 1b. Then, as shown in FIG. 25, the trailing edge of the front sheet Sn is conveyed downstream as it passes over the nip of the conveying means 2, and as shown in FIG. After passing the sensor SN2 located upstream of SB1, the branching means t1 is switched to the switchback path SB side.

その後、図27に示すように搬送手段1b,2逆転させて次用紙Sn+1の後端をスイッチバック経路SBへ搬送してメイン経路MPから退避させる。次いで、分岐手段t1を元の位置、つまりメイン経路MP側へ切り替える。この一連の動作を繰り返すことにより、折り跡付け装置Aの上流に装着された用紙搬送装置、若しくは後処理装置、若しくは画像形成装置などから用紙が連続して搬送されて来ても上流側に接続される装置の生産性を落とすことなく、折り跡付け処理を行い続けることができる。   After that, as shown in FIG. 27, the conveying means 1b and 2 are reversed to convey the trailing edge of the next sheet Sn + 1 to the switchback path SB and retract from the main path MP. Next, the branching means t1 is switched to the original position, that is, the main path MP side. By repeating this series of operations, even if sheets are continuously conveyed from the sheet conveying apparatus, the post-processing apparatus, or the image forming apparatus mounted upstream of the crease forming apparatus A, it is connected to the upstream side. The crease process can be continued without reducing the productivity of the apparatus.

図43は折り跡付け装置A、折り処理を行う折り処理装置B、及び画像形成装置PRからなる画像形成システムの制御構成を示すブロック図である。折り跡付け装置AはCPU_A1、I/Oインターフェイス_A2等を有するマイクロコンピュータを搭載した制御回路を備え、CPU_A1には、画像形成装置PRのCPUあるいは操作パネルの各スイッチ等、及び図示しない各センサからの信号が通信インターフェイス_A3を介して入力され、CPU_A1は入力された信号に基づいて所定の制御を実行する。また、CPU_A1は折り処理装置Bとも通信インターフェイス_B1を介して同様の信号を授受し、入力された信号に基づいて所定の制御を実行する。さらに、CPU_A1には、ドライバ、モータドライバを介してソレノイド及びモータを駆動制御し、インターフェイスから装置内のセンサ情報を取得する。また、制御対象やセンサに応じてI/0インターフェイス_A2を介してモータドライバによってモータの駆動制御を行い、センサからセンサ情報を取得する。なお、前記制御は、図示しないROMに格納されたプログラムコードをCPU_A1が読み込んで図示しないRAMに展開し、当該RAMをワークエリア及びデータバッファとして使用しながら前記プログラムコードで定義されたプログラムに基づいて実行される。   FIG. 43 is a block diagram illustrating a control configuration of an image forming system including the crease forming apparatus A, the folding processing apparatus B that performs folding processing, and the image forming apparatus PR. The crease forming apparatus A includes a control circuit equipped with a microcomputer having a CPU_A1, an I / O interface_A2, and the like. The CPU_A1 includes a CPU of the image forming apparatus PR, switches of an operation panel, and each sensor (not shown). Is input via the communication interface_A3, and the CPU_A1 executes predetermined control based on the input signal. Further, the CPU_A1 transmits / receives a similar signal to the folding processing device B via the communication interface_B1, and executes predetermined control based on the input signal. Further, the CPU_A1 controls driving of the solenoid and the motor via the driver and motor driver, and acquires sensor information in the apparatus from the interface. In addition, motor drive control is performed by the motor driver via the I / O interface_A2 in accordance with the control target and the sensor, and sensor information is acquired from the sensor. The control is based on a program defined by the program code while the CPU_A1 reads a program code stored in a ROM (not shown), expands it in a RAM (not shown), and uses the RAM as a work area and a data buffer. Executed.

図44は前記CPU_A1で実行される折り跡付け装置Aの制御手順を示すフローチャートである。この制御は前記図19から図24までの動作に対応する。
この制御では、入口センサSN1が用紙SNの先端を検知すると(ステップS101)、搬送手段1aが駆動され(ステップS102)、分岐部SB1に設けられている用紙検知センサSN2が用紙SNの先端を検知すると(ステップS103)、搬送手段1b及び2の駆動が開始される(ステップS104:図19)。次いで、用紙検知センサSN2が用紙SNの後端を検知後所定量、ここでは用紙SNの後端が分岐点SB1を通過するだけ搬送したら(ステップS105)、分岐手段t1をスイッチバック経路SB側に切り替え(ステップS106:図20)、搬送手段1b及び2を逆転させ、用紙SNを折り跡付け位置までスイッチバックさせる(ステップS107:図21)。
FIG. 44 is a flowchart showing a control procedure of the crease forming apparatus A executed by the CPU_A1. This control corresponds to the operations shown in FIGS.
In this control, when the entrance sensor SN1 detects the leading edge of the sheet SN (step S101), the transport unit 1a is driven (step S102), and the sheet detection sensor SN2 provided in the branching unit SB1 detects the leading edge of the sheet SN. Then (step S103), the driving of the conveying means 1b and 2 is started (step S104: FIG. 19). Next, when the sheet detection sensor SN2 detects the trailing edge of the sheet SN and conveys it by a predetermined amount, here the trailing edge of the sheet SN passes through the branch point SB1 (step S105), the branching unit t1 is moved to the switchback path SB side. Switching (step S106: FIG. 20), the conveying means 1b and 2 are reversed, and the sheet SN is switched back to the crease position (step S107: FIG. 21).

次いで、分岐手段t1をメイン経路MP側に切り替え(ステップS108:図22)、折り跡付け部材6を下降させて折り跡付け処理を実行し(ステップS109:図22)、折り跡付け処理が完了すると、搬送手段1b及び2によって用紙SNを下流側に搬送する(ステップS110:図23、図24)。このステップS105からステップS110までの動作をジョブ終了するまで継続する(ステップS111)。   Next, the branching means t1 is switched to the main path MP side (step S108: FIG. 22), the crease member 6 is lowered and the crease process is executed (step S109: FIG. 22), and the crease process is completed. Then, the sheet SN is conveyed downstream by the conveying means 1b and 2 (step S110: FIGS. 23 and 24). The operations from step S105 to step S110 are continued until the job is completed (step S111).

ここで、上記構成及び制御が成立する条件は、上流から連続して搬送されてくる用紙Sn、Sn+1において、折り跡付け処理を行おうとする用紙Snの後端がメイン経路MPとスイッチバック経路SBの分岐点SBを通過した(図20参照)後にスイッチバック動作を開始するために搬送手段1bあるいは2は減速を開始し、停止した後、スイッチバックし(図21参照)、折り跡付け位置で停止して折り跡付け処理を行い(図22)、折り跡付け処理終了後(図23参照)、停止している搬送手段1bに次紙Sn+1を受け入れるために前用紙Snの搬送速度をSn+1の搬送速度まで増速し終わってから、次用紙Sn+1の先端が搬送手段1bのニップに到達するような搬送間隔でなければならない。(図24参照)
しかし、上流から搬送されてくる用紙の間隔が短く、上記条件を満たせない場合でも、図28に示すように搬送手段1bを構成する搬送ローラを離間可能な構成としておけば、次用紙Sn+1の先端が搬送手段1bのニップに進入するまでに、搬送手段2によって搬送されている前用紙Snが次用紙Sn+1の搬送速度に達していなくても、図31に示すように用紙の搬送を妨げることはない。
Here, the condition for the above configuration and control to be satisfied is that, in the sheets Sn and Sn + 1 continuously conveyed from the upstream, the rear end of the sheet Sn to be subjected to the crease process is the main path MP and the switchback path SB. In order to start the switchback operation after passing through the branch point SB (see FIG. 20), the conveying means 1b or 2 starts to decelerate, stops, and then switches back (see FIG. 21). Stop and perform the crease process (FIG. 22), and after finishing the crease process (see FIG. 23), the transport speed of the previous sheet Sn is set to Sn + 1 in order to receive the next sheet Sn + 1 in the stopped transport unit 1b. After the speed is increased to the transport speed, the transport interval must be such that the leading edge of the next sheet Sn + 1 reaches the nip of the transport unit 1b. (See Figure 24)
However, even if the interval between the sheets conveyed from the upstream is short and the above condition cannot be satisfied, the leading edge of the next sheet Sn + 1 can be obtained by setting the conveying roller constituting the conveying unit 1b to be separated as shown in FIG. Even if the previous paper Sn being transported by the transport means 2 has not reached the transport speed of the next paper Sn + 1 by the time the paper enters the nip of the transport means 1b, it does not interfere with the transport of the paper as shown in FIG. Absent.

そして、前用紙Snの折り跡付け処理が終了し、搬送手段2、1bが次用紙Sn+1の搬送速度と同速になったら、図32に示すように離れていた搬送手段1bのローラを元に戻すことにより前用紙Snと次用紙Sn+1とを重ねて搬送させることができる。これにより生産性を落とすことなく折り跡付け処理を行うことができる。   Then, when the folding process of the previous sheet Sn is completed and the conveying units 2 and 1b are at the same speed as the conveying speed of the next sheet Sn + 1, based on the rollers of the conveying unit 1b separated as shown in FIG. By returning, the previous sheet Sn and the next sheet Sn + 1 can be transported in an overlapping manner. This makes it possible to perform the crease process without reducing productivity.

図45は、このときの制御手順を示すフローチャートである。
この制御手順は、図44のフローチャートのステップS104からステップS105にステップS201〜ステップS206の処理を追加したもので、ステップS104で搬送手段1b及び2を駆動した後、用紙がジョブの1枚目かどうかをチェックし(ステップS201)、1枚目であれば、ステップS105に以降して図44と同様に処理される。2枚目以降であれば、搬送手段1bのローラを離間させてニップを解除し(ステップS202)、前用紙Snの折り跡付け処理が終了するまで待ち、折り跡付け処理が終了した時点で(ステップS203)、搬送手段1b及び2を駆動し、搬送手段1b,2の搬送速度と次用紙の搬送速度が同速になるまで待ち(ステップS205)、同速になった時点で搬送手段1bのローラを元に戻して用紙をニップさせ(ステップS206)、ステップS105以降の処理を実行する。
FIG. 45 is a flowchart showing a control procedure at this time.
This control procedure is obtained by adding steps S201 to S206 to steps S104 to S105 in the flowchart of FIG. 44. After driving the conveying units 1b and 2 in step S104, whether the sheet is the first sheet of the job. Whether or not it is the first sheet is checked in the same manner as in FIG. 44 after step S105. If it is the second and subsequent sheets, the rollers of the conveying means 1b are separated to release the nip (step S202), wait until the folding process of the front sheet Sn is completed, and when the folding process is completed ( In step S203), the conveying units 1b and 2 are driven and wait until the conveying speed of the conveying units 1b and 2 and the conveying speed of the next sheet become the same speed (step S205). The roller is returned to the original position to nip the sheet (step S206), and the processing after step S105 is executed.

なお、ステップS111でジョブ終了でない場合に、ステップS105に戻って用紙検知センサSN2の状態を判定しているが、このとき、図20に示すように折り跡付け装置Aでは、前用紙がステップS107の処理のときに次用紙はステップS104の状態、図では図22の動作状態にあり、複数の用紙の動作が並行して行われていることになる。   If the job is not completed in step S111, the process returns to step S105 to determine the state of the sheet detection sensor SN2. At this time, in the crease device A as shown in FIG. During the process, the next sheet is in the state of step S104, the operation state of FIG. 22 in the figure, and the operations of a plurality of sheets are performed in parallel.

図29及び図30は搬送手段1bの構成及び動作を示す図である。これらの図において、搬送手段1bは、搬送駆動用モータMb1−(a)、離間用モータMb1−(b)を備え、離間用モータMb1−(b)の駆動力はベルトによって搬送手段(搬送ローラ)b1に伝達される。図29では、上側が駆動ローラであり、対向するローラが従動ローラである。従動ローラは弾性部材SPb1−(a)によって上方に弾性付勢され、搬送手段b1のニップを加圧し、駆動ローラとの間に搬送力を付与している。駆動系のベルトは弾性材SPb1−(b)によってアイドラローラRb1を加圧し、ベルトに対して張力を付与している。   29 and 30 are diagrams showing the configuration and operation of the conveying means 1b. In these drawings, the transport unit 1b includes a transport drive motor Mb1- (a) and a separation motor Mb1- (b), and the driving force of the separation motor Mb1- (b) is transported by a belt (transport roller). ) Is transmitted to b1. In FIG. 29, the upper side is a driving roller, and the opposing roller is a driven roller. The driven roller is elastically biased upward by the elastic member SPb1- (a), pressurizes the nip of the transport means b1, and applies a transport force to the drive roller. The drive system belt pressurizes idler roller Rb1 with elastic material SPb1- (b) to apply tension to the belt.

離間用モータMb1−(b)はカムCb1を駆動する。カムCb1には搬送手段b1の軸が遊嵌されており、カムCb1の回転動作に応じて搬送手段b1の駆動ローラが上下方向に移動する。また搬送手段b1の上下方向の位置はカムCb1の回転位置によって変化することから、カム上のフィラーをセンサSNb1で検知することによりカムCb1の回転位置、ひいては搬送手段b1の上下方向の位置を検出する。   The separation motor Mb1- (b) drives the cam Cb1. The shaft of the conveying means b1 is loosely fitted to the cam Cb1, and the driving roller of the conveying means b1 moves in the vertical direction in accordance with the rotation operation of the cam Cb1. Further, since the vertical position of the conveying means b1 changes depending on the rotational position of the cam Cb1, the rotational position of the cam Cb1, and consequently the vertical position of the conveying means b1, is detected by detecting the filler on the cam with the sensor SNb1. To do.

搬送手段b1を離間するには図30に示すようにカムCb1を時計回り(図中矢印方向)に回転させて搬送手段b1の駆動ローラを上方へ移動させ、それに伴って搬送手段b1を駆動する駆動系のベルトは、弾性材SPb1−(b)によってアイドラローラRb1が外側(図中矢印方向)に弾性付勢されることにより張力が付与された状態が維持され、搬送駆動用のモータMb1−(a)の駆動力が伝達可能となっている。   In order to separate the conveying means b1, as shown in FIG. 30, the cam Cb1 is rotated clockwise (in the direction of the arrow in the figure) to move the driving roller of the conveying means b1 upward, and the conveying means b1 is driven accordingly. The belt of the drive system is maintained in a state where tension is applied by elastically urging the idler roller Rb1 outward (in the direction of the arrow in the figure) by the elastic material SPb1- (b), and the conveyance driving motor Mb1- The driving force (a) can be transmitted.

搬送手段1bにおいて、前用紙Snと次用紙Sn+1とが重なるときに、前用紙Snと接触する側の搬送手段1bを駆動ローラとし、もう一方の次用紙Sn+1と接触する側を従動ローラとすれば(図29参照)、図31のように次用紙Sn+1の先端が、停止若しくは増速中の搬送手段1bに進入しても、次用紙Sn+1の表面は従動ローラと接触するので、従動ローラは空回りをし、用紙表面と搬送手段1bとが擦れて汚れるのを防止することができる。   In the transport unit 1b, when the previous sheet Sn and the next sheet Sn + 1 overlap, the transport unit 1b on the side in contact with the previous sheet Sn is a driving roller, and the side in contact with the other next sheet Sn + 1 is a driven roller. (See FIG. 29) As shown in FIG. 31, even if the leading edge of the next sheet Sn + 1 enters the conveying means 1b that is stopped or accelerated, the surface of the next sheet Sn + 1 comes into contact with the driven roller. Thus, the surface of the paper and the conveying means 1b can be prevented from being rubbed and soiled.

また、折り跡付け処理を終了した用紙Snを停止状態から増速して次用紙Sn+1の搬送速度と同速にする際、搬送手段1bの駆動ローラと搬送手段2とを同期させて動作させ、次用紙Sn+1の搬送速度と等速となってから離れていた搬送手段1bを元に戻すことにより、前用紙Snの表面と搬送手段1bとが擦れて汚れるのを防止することができ、かつ前用紙Snと次用紙Sn+1とを重ねて下流へ搬送させることができる。   Further, when the sheet Sn that has finished the crease process is accelerated from the stopped state to the same speed as the conveyance speed of the next sheet Sn + 1, the driving roller of the conveyance unit 1b and the conveyance unit 2 are operated in synchronization with each other, By returning the transporting unit 1b that has been separated from the transporting speed of the next sheet Sn + 1 to the original speed, it is possible to prevent the front surface of the previous sheet Sn and the transporting unit 1b from being rubbed and soiled. The sheet Sn and the next sheet Sn + 1 can be stacked and conveyed downstream.

さらに、搬送手段1bの駆動側のローラ軸にワンウェイクラッチを入れ、搬送手段1bが折り跡付け処理を終了した前記用紙Snの搬送手段2による下流への搬送動作に追従(連れ回り)するようにすれば、前記用紙Snの表面と搬送手段1bの駆動ローラとが接触しても、擦れて汚れるのを防止することができる。このとき、すなわち折り跡付け処理を終了した前用紙Snが搬送手段2によって停止状態から増速しつつ下流へ搬送されていくときに、搬送手段1bも増速して次用紙Sn+1の搬送速度と同速になるまでは、必ず搬送手段1bの速度は下流の搬送手段2の速度以下となるように駆動させる必要がある。さもないと、用紙ジャムを発生する。そして、搬送手段1bが遅れて搬送手段2と同速となってから図32に示すように離れていた搬送手段(搬送ローラ:ここでは駆動側のローラ)1bを元に戻すことにより、前用紙Snと次用紙Sn+1とを重ねて下流へ搬送させることができる。   Further, a one-way clutch is inserted into the roller shaft on the driving side of the transport unit 1b so that the transport unit 1b follows (follows) the downstream transport operation by the transport unit 2 of the paper Sn that has been subjected to the folding process. Then, even if the surface of the sheet Sn and the drive roller of the transport unit 1b come into contact with each other, it is possible to prevent rubbing and contamination. At this time, that is, when the previous sheet Sn that has finished the crease process is conveyed downstream from the stopped state by the conveying unit 2, the conveying unit 1 b also increases the speed of the next sheet Sn + 1. Until the speed is the same, it is necessary to drive the conveying means 1b so that the speed of the conveying means 1b is equal to or lower than the speed of the downstream conveying means 2. Otherwise, a paper jam occurs. Then, after the conveying means 1b is delayed and becomes the same speed as the conveying means 2, the conveying means (conveying roller: here the driving side roller) 1b which has been separated as shown in FIG. Sn and the next sheet Sn + 1 can be overlapped and conveyed downstream.

一方、搬送手段1bの駆動と従動の位置関係を逆にした場合、つまり、前用紙Snと次用紙Sn+1とが重なるときに、前用紙Snと接触する側を従動ローラとし、次用紙Sn+1と接触する側を駆動ローラとすれば、搬送手段1bが離間した状態で前用紙Snの折り跡付け処理をしているとき(停止中)、若しくは処理後に下流の搬送手段2によって搬送を開始し、次用紙Sn+1の搬送速度にまで増速中であるときに、次用紙Sn+1が搬送手段1bまで搬送されて来るときには、搬送手段1a、1bを同期させて等速で搬送し、前用紙Snの折り跡付け処理が終了し、搬送手段2によって次用紙Sn+1の搬送速度まで増速し終わったら、離れていた搬送手段1bを元に戻すことにより、前用紙Snと次用紙Sn+1とを重ねて下流へ搬送させることができ、かつ前用紙Snと次用紙Sn+1の表面と搬送手段1bとが擦れて汚れるのを防止することができる。   On the other hand, when the positional relationship between the driving and the driven of the conveying unit 1b is reversed, that is, when the previous sheet Sn and the next sheet Sn + 1 overlap, the side that contacts the previous sheet Sn is used as a driven roller, and the next sheet Sn + 1 is contacted. If the side to be driven is a driving roller, when the crease processing of the front sheet Sn is performed with the transport unit 1b separated (stopped), or after the process, the transport is started by the downstream transport unit 2, and the next When the next sheet Sn + 1 is transported to the transport unit 1b while the speed is increased to the transport speed of the sheet Sn + 1, the transport unit 1a and 1b are transported at a constant speed and the folds of the previous sheet Sn are conveyed. When the attaching process is completed and the conveying unit 2 finishes accelerating to the conveying speed of the next sheet Sn + 1, the conveying unit 1b that has been separated is returned to its original state, and the previous sheet Sn and the next sheet Sn + 1 are overlapped and then downstream. Feed makes it possible, and it is possible to prevent the front sheet Sn and the following sheet Sn + 1 of the surface and the conveying means 1b soiled by rubbing.

図33は実施例2に係る折り跡付け装置Aの概略構成を示す図である。本実施例2は、生産性を維持する他の例であり、同図に示すように、跡付け部材6及び受け台7の上流に複数の搬送路、ここでは、第1及び第2の分岐搬送路SBa,SBbと、それぞれの搬送路SBa,SBbへ搬送されてきた用紙を第1及び第2の分岐搬送路SBa,SBbの用紙搬送方向上流側の分岐部SB2で振り分ける分岐手段t2を設けたものである。なお、それぞれの分岐搬送路SBa,SBbには搬送手段1c,1dと、用紙検知センサSN3、SN4が設けられている。分岐手段t2はモータ若しくはソレノイドなどの駆動手段によって駆動される。   FIG. 33 is a diagram illustrating a schematic configuration of the crease forming apparatus A according to the second embodiment. The second embodiment is another example of maintaining productivity. As shown in the figure, a plurality of conveyance paths, here, first and second branches are provided upstream of the marking member 6 and the cradle 7. A branching unit t2 is provided that distributes the transported paths SBa, SBb and the paper transported to the respective transported paths SBa, SBb at a branching unit SB2 upstream of the first and second branched transport paths SBa, SBb in the paper transport direction. It is a thing. Each branch conveyance path SBa, SBb is provided with conveyance means 1c, 1d and sheet detection sensors SN3, SN4. The branching means t2 is driven by driving means such as a motor or a solenoid.

図34ないし図42は、2つの搬送路を使用して搬送する本実施例2における動作を説明するための動作説明図である。   FIG. 34 to FIG. 42 are operation explanatory views for explaining the operation in the second embodiment for transporting using two transport paths.

図34に示すように前用紙Snが折り跡付け装置A内に搬送されてきて、図35のように用紙Snは分岐手段t2によって複数ある搬送路の一方、ここでは、第1の分岐搬送路SBaに搬送される。このとき、分岐手段t2は上側の第1の分岐搬送路SBa側を開放し、下側の第2の分岐搬送路SBb側を閉鎖するように基端を回動軸として回動している。次に図36に示すように前用紙Snが跡付け部材6及び受け台7によって折り跡付け処理を行っている最中に、次に搬送されてくる次用紙Sn+1は分岐手段t2によって第2の分岐搬送路SBb側に搬送される。通常であれば前記用紙Snの処理が終了するまで次用紙Sn+1は搬送停止、減速などして搬送路で待機していなければ衝突してしまうが、第1及び第2の分岐搬送路SBa,SBbの合流点で、図37に示すように、次用紙Sn+1の先端は必ず前用紙Snの後端と重なるように搬送されるので衝突することなく搬送することができる。   As shown in FIG. 34, the front sheet Sn is conveyed into the crease device A, and as shown in FIG. 35, the sheet Sn is one of a plurality of conveyance paths by the branching means t2, here, the first branch conveyance path. Transported to SBa. At this time, the branching unit t2 rotates about the base end as a rotation shaft so as to open the upper first branch transport path SBa side and close the lower second branch transport path SBb side. Next, as shown in FIG. 36, while the previous sheet Sn is being folded by the marking member 6 and the cradle 7, the next sheet Sn + 1 conveyed next is the second sheet t2 by the branching means t2. It is transported to the branch transport path SBb side. Normally, the next sheet Sn + 1 will collide if it is not waiting in the transport path by stopping transporting or decelerating until the processing of the sheet Sn is completed, but the first and second branch transport paths SBa and SBb. 37, as shown in FIG. 37, the leading edge of the next sheet Sn + 1 is always conveyed so as to overlap the trailing edge of the preceding sheet Sn, so that it can be conveyed without colliding.

図37に示すように次用紙Sn+1の先端が搬送手段1bのニップに入る前に前用紙Snの折り跡付け処理が終了すれば、図38に示すように搬送手段1bによって前用紙Snと次用紙Sn+1を共に下流へ搬送することができる。そして、図39に示すように次の用紙、すなわち、次次用紙Sn+2は分岐手段t2によって前の用紙である前記次用紙Sn+1とは異なる第1の搬送路SBaへ搬送される。この状態で、前用紙Snが搬送手段2のニップを超えたらそのまま搬送し続け、次用紙Sn+1が折り跡付け位置に来たら次用紙Sn+1は停止してそのまま折り跡付け処理を行い、この間に搬送されてきた次次用紙Sn+2は次用紙Sn+1とは異なる搬送路、すなわち第1の搬送路SBaを搬送され続ける。   As shown in FIG. 37, if the folding process of the previous sheet Sn is completed before the leading edge of the next sheet Sn + 1 enters the nip of the conveying unit 1b, the conveying unit 1b and the previous sheet Sn and the next sheet are completed as shown in FIG. Both Sn + 1 can be transported downstream. Then, as shown in FIG. 39, the next sheet, that is, the next sheet Sn + 2, is conveyed by the branching means t2 to the first conveyance path SBa different from the next sheet Sn + 1 which is the previous sheet. In this state, when the previous sheet Sn exceeds the nip of the conveying means 2, the sheet continues to be conveyed, and when the next sheet Sn + 1 reaches the crease position, the next sheet Sn + 1 is stopped and the crease process is performed as it is. The succeeding next sheet Sn + 2 continues to be transported on a transport path different from the next sheet Sn + 1, that is, the first transport path SBa.

この一連の動作を繰り返すことにより、折り跡付け装置Aの上流に装着された用紙搬送装置、若しくは後処理装置、若しくは画像形成装置などから用紙が連続して搬送されて来ても上流側に接続される装置の生産性を落とすことなく、折り跡付け処理を行い続けることができる。   By repeating this series of operations, even if sheets are continuously conveyed from the sheet conveying apparatus, the post-processing apparatus, or the image forming apparatus mounted upstream of the crease forming apparatus A, it is connected to the upstream side. The crease process can be continued without reducing the productivity of the apparatus.

図46は前記CPU_A1で実行される折り跡付け装置Aの制御手順を示すフローチャートである。この制御は前記図34から図39までの動作に対応する。
この制御では、入口センサSN1が用紙先端と検知すると(ステップS301)、搬送手段1a,1c,1dが駆動され(ステップS302)、用紙がジョブの1枚目であれば(ステップS303−YES)、デフォルトの搬送路、ここでは第1の分岐搬送路SBaに搬送されるように分岐手段t2を切り替え(ステップS304)、用紙検知センサS3,S4の用紙検知を待つ(ステップS306:図35)。一方、ジョブの1枚目でなければ(ステップS303−NO)、先行する用紙とは異なる搬送路、2枚目であれば第2の分岐搬送路SBbに搬送されるように分岐手段t2を切り替え(ステップS305)、用紙検知センサS3,S4の用紙検知を待つ(ステップS306:図36)。
FIG. 46 is a flowchart showing a control procedure of the crease forming apparatus A executed by the CPU_A1. This control corresponds to the operations shown in FIGS.
In this control, when the entrance sensor SN1 detects the leading edge of the sheet (step S301), the conveying means 1a, 1c, 1d are driven (step S302), and if the sheet is the first sheet of the job (step S303—YES), The branching means t2 is switched so as to be transported to the default transport path, here the first branch transport path SBa (step S304), and the sheet detection sensors S3 and S4 wait for sheet detection (step S306: FIG. 35). On the other hand, if it is not the first sheet of the job (step S303-NO), the branching unit t2 is switched so that it is transported to the second branch transport path SBb if it is the second transport path different from the preceding sheet. (Step S305), paper detection of the paper detection sensors S3 and S4 is awaited (Step S306: FIG. 36).

そして、用紙検知センサS3,S4が用紙先端を検知すると(ステップS306−YES)、搬送手段1b,2によって先端を検知した用紙を跡付け部材6及び受け台7位置まで搬送して折り跡付け処理を実行し(ステップS308:図36、図39)、搬送手段1b,2によって下流に搬送し(ステップS309:図38)、ジョブの終了か否かを判定する(ステップS310)。   When the sheet detection sensors S3 and S4 detect the leading edge of the sheet (step S306-YES), the sheet whose leading edge has been detected by the transporting means 1b and 2 is transported to the positions of the marking member 6 and the cradle 7 and the crease marking process is performed. (Step S308: FIG. 36, FIG. 39), it is transported downstream by the transport means 1b, 2 (Step S309: FIG. 38), and it is determined whether or not the job is finished (Step S310).

ジョブが終了していなければ、ステップS303に戻って、ジョブまでステップS307からステップS310の処理を実行する。その際、並行して次用紙が搬入され、例えば、前用紙Snが折り跡付け処理(ステップS308)のとき、図36に示すように次用紙Sn+1はステップS306の判定が行われていることになる。   If the job has not ended, the process returns to step S303, and the processing from step S307 to step S310 is executed up to the job. At that time, the next sheet is carried in parallel. For example, when the previous sheet Sn is subjected to the crease process (step S308), the determination of step S306 is performed on the next sheet Sn + 1 as shown in FIG. Become.

しかし、上流から搬送されてくる用紙の間隔が短く、上記条件を満たせない場合でも、実施例1におけるメイン経路MPとスイッチバック経路SBを設けた機構と同じく図40に示すように搬送手段1bを離間可能な構成としておけば、次用紙Sn+1の先端が搬送手段1bのニップに進入するまでに、搬送手段2によって搬送されている前用紙Snが用紙Sn+1の搬送速度に達していなくても、図41に示すように用紙の搬送を妨げることはない。   However, even when the interval between the sheets conveyed from the upstream is short and the above condition cannot be satisfied, the conveying means 1b is used as shown in FIG. 40 as in the mechanism provided with the main path MP and the switchback path SB in the first embodiment. If the configuration allows separation, even if the previous sheet Sn transported by the transport unit 2 does not reach the transport speed of the sheet Sn + 1 by the time the leading edge of the next sheet Sn + 1 enters the nip of the transport unit 1b, FIG. As shown at 41, the conveyance of the paper is not hindered.

そして前用紙Snの折り跡付け処理が終了し、搬送手段2、1bが次用紙Sn+1の搬送速度と同速になったら、図42に示すように離れていた搬送手段1bを元に戻すことにより前用紙Snと次用紙Sn+1とを重ねて搬送させることができる。これにより生産性を落とすことなく折り跡付け処理を行うことができる。   When the crease forming process for the previous sheet Sn is completed and the conveying units 2 and 1b are at the same speed as the conveying speed of the next sheet Sn + 1, the separated conveying unit 1b is returned to the original state as shown in FIG. The previous sheet Sn and the next sheet Sn + 1 can be transported in an overlapping manner. This makes it possible to perform the crease process without reducing productivity.

図47は、このときの制御手順を示すフローチャートである。   FIG. 47 is a flowchart showing the control procedure at this time.

この処理手順では、ステップS305とステップS306との間に搬送手段1bを離間する処理を行い(ステップS401)、ステップS308とステップS309との間に搬送手段1bを戻す処理(ステップS402)を実行する。その他の各処理は図46のステップS301からステップS310の処理と同一である。   In this processing procedure, a process of separating the transport unit 1b is performed between Step S305 and Step S306 (Step S401), and a process of returning the transport unit 1b (Step S402) is performed between Step S308 and Step S309. . The other processes are the same as the processes from step S301 to step S310 in FIG.

また、搬送手段b1と用紙表面とが擦れて汚れてしまうのを防止する機構は、実施例1において図29及び図30に図示したものと同様である。また、搬送手段1bの駆動と従動の位置関係を逆にした場合も実施例1と同様である。   Further, the mechanism for preventing the conveying means b1 and the paper surface from being rubbed and soiled is the same as that shown in FIGS. 29 and 30 in the first embodiment. Further, the case where the positional relationship between the driving and the driven of the conveying unit 1b is reversed is the same as in the first embodiment.

このようにして、実施例2においても、生産性を落とすことなく、また、用紙表面を汚すことなく効率の良い折り跡付け処理が可能になる。   In this manner, also in the second embodiment, efficient crease processing can be performed without reducing productivity and without contaminating the paper surface.

以上のように、本実施形態によれば、
1)退避用の搬送路(実施例1)あるいは複数の搬送路(実施例2)を設けることにより、前用紙SNが折り跡付け処理のために一定時間停止している間に、後続の次用紙Sn+1が追いついてしまっても、紙詰まり起こすことなく共にそのまま下流へ搬送し、かつ、後続の次用紙Sn+1が折り跡付け処理を行うために一定時間停止する時間を利用して、再び受け入れ前の用紙搬送間隔に戻すことができる。
2)これにより連続して搬送されてくる用紙間隔を維持することが可能となり、その結果、生産性を落とすことなく折り跡処理を連続して行うことができる。
という効果を奏する。
As described above, according to the present embodiment,
1) By providing a transport path for evacuation (Example 1) or a plurality of transport paths (Example 2), while the previous sheet SN is stopped for a predetermined time for the crease processing, Even if the paper Sn + 1 catches up, it is transported downstream as it is without causing paper jamming, and the subsequent next paper Sn + 1 is stopped for a certain period of time to perform the crease process, and before being accepted again. The sheet conveyance interval can be restored.
2) This makes it possible to maintain the interval between continuously conveyed sheets, and as a result, the fold processing can be continuously performed without reducing productivity.
There is an effect.

1a,1b,1c,1d,2 搬送手段
6 跡付け部材
7 受け台
t1,t2 分岐手段
A 折り跡付け装置
A1 CPU
MPメイン経路
PR 画像形成装置
SB スイッチバック経路
SB1,SB2 分岐部
SBa 第1の搬送路
SBb 第2の搬送路
1a, 1b, 1c, 1d, 2 Conveying means 6 Marking member 7 Receiving base t1, t2 Branch means A Folding device A1 CPU
MP main path PR Image forming apparatus SB Switchback path SB1, SB2 Branch portion SBa First transport path SBb Second transport path

特開2004−284774号公報JP 2004-284774 A 特許第3617936号公報Japanese Patent No. 3617936 特許第4355255号公報Japanese Patent No. 4355255

そのため、用紙束を2つ折りする等の折り処理を行う前に、用紙の折り部に予め筋付けを付けておき、外側の用紙も折れやすくすることでトナー剥がれを防止するクリーサーと呼ばれる筋付け装置が既に知られている。このような筋付け装置では、ローラを走行させ、レーザーで焼き、あるいは筋入れ刃で押圧する等の方法により搬送方向と直角方向に筋付けを行うようになっているTherefore, a creasing device called a creaser that prevents the toner from peeling off by pre-scoring the folded portion of the paper before the folding process such as folding the paper bundle in two and making the outer paper easy to break. Is already known. In such a creasing device causes the traveling roller, is adapted to perform creasing in Ri搬 feeding direction perpendicular to the direction by the method such as baked laser, or pressed by creasing blade.

前記特許文献1ないし3には、用紙を重ね合わせて搬送する技術が開示されている。一方、折り跡付け処理には一旦停止し、その位置で処理するので、処理に一定の時間が必要であり、生産性に限界がある。特に折り跡がプレス方式で付けられるものであると生産性に関わる条件が厳しくなる。 Patent Documents 1 to 3 disclose a technique for transporting sheets in a superimposed manner. On the other hand, since the crease process is temporarily stopped and processed at that position, a certain time is required for the process, and the productivity is limited. Conditions in fold marks, especially is involved in productivity and is intended to be attached in a press system becomes severe.

Claims (8)

用紙搬送経路に折り跡付け手段を有し、搬送手段によって搬送される用紙に前記折り跡付け手段によって折り跡を付ける折り跡付け装置において、
前段から搬送されてくる用紙を前記跡付け手段位置に搬送し、後段に搬送する第1の搬送経路と、
前記第1の搬送経路から用紙搬送方向と逆方向に分岐した第2の搬送経路と、
前記第1の搬送経路から第2の搬送経路に導く分岐手段と、
前記搬送手段、前記折り跡付け手段、及び前記分岐手段を制御する制御手段と、
を備え、
前記制御手段は、
前記跡付け手段位置に用紙を搬送する際、先に搬送されてくる前用紙の後端が前記分岐手段を超えた後、当該前用紙を逆方向に搬送し、
前記分岐手段から前記第2の搬送経路に前用紙の後端部を搬送した後、折り跡付け位置が前記折り跡付け手段位置に対応するように用紙の搬送を停止させ、
前記搬送手段によって前用紙を逆方向に搬送している間、あるいは前記折り跡付け手段によって前用紙に折り跡を付けている間に搬送されてくる次用紙が前記折り跡付け手段に達する前に前用紙を折り跡付け手段から排紙すること
を特徴とする折り跡付け装置。
In the crease device having a crease unit in the paper conveyance path, and creases the sheet conveyed by the conveyance unit by the crease unit,
A first transport path for transporting the paper transported from the front stage to the marking means position and transporting it to the rear stage;
A second transport path branched from the first transport path in a direction opposite to the paper transport direction;
Branching means for leading from the first transport path to the second transport path;
Control means for controlling the conveying means, the crease marking means, and the branching means;
With
The control means includes
When the paper is transported to the marking means position, after the rear end of the front paper transported first exceeds the branching means, the front paper is transported in the reverse direction,
After conveying the trailing edge of the front sheet from the branching unit to the second conveyance path, the conveyance of the sheet is stopped so that the crease position corresponds to the position of the crease unit;
While the previous sheet is being conveyed in the reverse direction by the conveying means, or before the next sheet conveyed while the crease is being creased by the crease attaching means, before reaching the crease means. A crease forming apparatus that discharges a front sheet from a crease forming unit.
用紙搬送経路に折り跡付け手段を有し、搬送手段によって搬送される用紙に前記折り跡付け手段によって折り跡を付ける折り跡付け装置において、
前段から搬送されてくる用紙を前記跡付け手段位置に搬送し、後段に搬送する第1の搬送経路と、
前記第1の搬送経路の上流側から分岐し、下流側で合流する第3及び第4の搬送経路と、
前記第1の搬送経路から第3あるいは第4の搬送経路を選択して用紙を導く分岐手段と、
前記搬送手段、前記折り跡付け手段、及び前記分岐手段を制御する制御手段と、
を備え、
前記制御手段は、前記分岐手段を制御し、
前記跡付け手段位置に用紙を搬送する際、
先に搬送されてくる前用紙を第3又は第4の搬送経路の一方へ搬送させ、
次に搬送されてくる次用紙を第3又は第4の搬送経路の他方へ搬送させ、
前記一方の搬送経路から搬送されてくる用紙を折り跡付け位置が前記折り跡付け手段位置に対応するように停止させ、
前記搬送手段によって次用紙を搬送している間、あるいは前記折り跡付け手段によって前用紙に折り跡を付けている間に搬送されてくる次用紙が前記折り跡付け手段に達する前に前用紙を折り跡付け手段から排紙すること
を特徴とする折り跡付け装置。
In the crease device having a crease unit in the paper conveyance path, and creases the sheet conveyed by the conveyance unit by the crease unit,
A first transport path for transporting the paper transported from the front stage to the marking means position and transporting it to the rear stage;
A third and fourth transport path that branches from the upstream side of the first transport path and merges on the downstream side;
Branching means for selecting the third or fourth transport path from the first transport path and guiding the paper;
Control means for controlling the conveying means, the crease marking means, and the branching means;
With
The control means controls the branching means;
When transporting paper to the marking means position,
Transport the previous paper transported first to one of the third or fourth transport path,
Next transport the next paper to the other of the third or fourth transport path,
Stopping the sheet conveyed from the one conveyance path so that the crease position corresponds to the crease position;
While the next sheet is being conveyed by the conveying unit or while the previous sheet is being creased by the crease unit, the previous sheet is removed before reaching the crease unit. A crease forming apparatus for discharging paper from a crease attaching unit.
請求項1又は2記載の折り跡付け装置において、
前記前用紙の後端部と、前記次用紙の先端部が重ねられた状態で前記折り跡付け手段側の分岐部を通過すること
を特徴とする折り跡付け装置。
The crease marking apparatus according to claim 1 or 2,
A crease forming apparatus that passes through a branch portion on the crease forming means side in a state in which a rear end portion of the front sheet and a front end portion of the next sheet are overlapped.
請求項3記載の折り跡付け装置において、
前記分岐部と前記折り跡付け手段との間に搬送手段を備え、
前記次用紙の先端部が重ねられた状態で前記折り跡付け手段側の分岐部を通過する際、前記搬送手段のニップは開放されていること
を特徴とする折り跡付け装置。
The crease marking apparatus according to claim 3, wherein
A conveying means is provided between the branch portion and the crease marking means,
The crease forming apparatus is characterized in that the nip of the transport unit is opened when passing through the branch part on the crease attaching unit side in a state where the leading end portion of the next sheet is overlapped.
請求項3記載の折り跡付け装置において、
前記分岐部と前記折り跡付け手段との間に搬送手段を備え、
前記次用紙の先端部が重ねられた状態で前記折り跡付け手段側の分岐部を通過する際、前記搬送手段は用紙に連れ回りすること
を特徴とする折り跡付け装置。
The crease marking apparatus according to claim 3, wherein
A conveying means is provided between the branch portion and the crease marking means,
2. A crease forming apparatus according to claim 1, wherein when the leading end portion of the next sheet passes through the branch portion on the crease attaching unit side, the conveying unit rotates with the sheet.
請求項1ないし5のいずれか1項に記載の折り跡付け装置と、
用紙に画像を形成する画像形成装置と、
を備えていることを特徴とする画像形成システム。
The crease marking apparatus according to any one of claims 1 to 5,
An image forming apparatus for forming an image on paper;
An image forming system comprising:
用紙搬送経路に折り跡付け手段を有し、搬送手段によって搬送される用紙に前記折り跡付け手段によって折り跡を付ける折り跡付け装置の用紙搬送方法において、
前段から搬送されてくる用紙を前記跡付け手段位置に搬送し、後段に搬送する第1の搬送経路と、
前記第1の搬送経路から用紙搬送方向と逆方向に分岐した第2の搬送経路と、
前記第1の搬送経路から第2の搬送経路に導く分岐手段と、
を備え、
前記跡付け手段位置に用紙を搬送する際、先に搬送されてくる前用紙の後端が前記分岐手段を超えた後、当該前用紙を逆方向に搬送し、
前記分岐手段から前記第2の搬送経路に前用紙の後端部を搬送した後、折り跡付け位置が前記折り跡付け手段位置に対応するように用紙の搬送を停止させ、
前記搬送手段によって前用紙を逆方向に搬送している間、あるいは前記折り跡付け手段によって前用紙に折り跡を付けている間に搬送されてくる次用紙が前記折り跡付け手段に達する前に前用紙を折り跡付け手段から排紙すること
を特徴とする折り跡付け装置の用紙搬送方法。
In the paper conveying method of the crease device, which has a crease means in the paper conveyance path, and creases the paper conveyed by the conveyance means by the crease means,
A first transport path for transporting the paper transported from the front stage to the marking means position and transporting it to the rear stage;
A second transport path branched from the first transport path in a direction opposite to the paper transport direction;
Branching means for leading from the first transport path to the second transport path;
With
When the paper is transported to the marking means position, after the rear end of the front paper transported first exceeds the branching means, the front paper is transported in the reverse direction,
After conveying the trailing edge of the front sheet from the branching unit to the second conveyance path, the conveyance of the sheet is stopped so that the crease position corresponds to the position of the crease unit;
While the previous sheet is being conveyed in the reverse direction by the conveying means, or before the next sheet conveyed while the crease is being creased by the crease attaching means, before reaching the crease means. A paper conveying method for a crease forming apparatus, wherein the front paper is discharged from a crease attaching means.
用紙搬送経路に折り跡付け手段を有し、搬送手段によって搬送される用紙に前記折り跡付け手段によって折り跡を付ける折り跡付け装置の用紙搬送方法において、
前段から搬送されてくる用紙を前記跡付け手段位置に搬送し、後段に搬送する第1の搬送経路と、
前記第1の搬送経路の上流側から分岐し、下流側で合流する第3及び第4の搬送経路と、
前記第1の搬送経路から第3あるいは第4の搬送経路を選択して用紙を導く分岐手段と、
を備え、
前記跡付け手段位置に用紙を搬送する際、
先に搬送されてくる前用紙を第3又は第4の搬送経路の一方へ搬送させ、
次に搬送されてくる次用紙を第3又は第4の搬送経路の他方へ搬送させ、
前記一方の搬送経路から搬送されてくる用紙を折り跡付け位置が前記折り跡付け手段位置に対応するように停止させ、
前記搬送手段によって次用紙を搬送している間、あるいは前記折り跡付け手段によって前用紙に折り跡を付けている間に搬送されてくる次用紙が前記折り跡付け手段に達する前に前用紙を折り跡付け手段から排紙すること
を特徴とする折り跡付け装置の用紙搬送方法。
In the paper conveying method of the crease device, which has a crease means in the paper conveyance path, and creases the paper conveyed by the conveyance means by the crease means,
A first transport path for transporting the paper transported from the front stage to the marking means position and transporting it to the rear stage;
A third and fourth transport path that branches from the upstream side of the first transport path and merges on the downstream side;
Branching means for selecting the third or fourth transport path from the first transport path and guiding the paper;
With
When transporting paper to the marking means position,
Transport the previous paper transported first to one of the third or fourth transport path,
Next transport the next paper to the other of the third or fourth transport path,
Stopping the sheet conveyed from the one conveyance path so that the crease position corresponds to the crease position;
While the next sheet is being conveyed by the conveying unit or while the previous sheet is being creased by the crease unit, the previous sheet is removed before reaching the crease unit. A paper conveying method for a crease forming apparatus, wherein the paper is discharged from the crease attaching means.
JP2010119879A 2010-05-25 2010-05-25 Fold marking device, image forming system, and paper conveying method Pending JP2011246221A (en)

Priority Applications (1)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018048028A (en) * 2017-11-22 2018-03-29 株式会社リコー Sheet folding device, image forming system, and sheet folding method
US10105968B2 (en) 2014-05-13 2018-10-23 Ricoh Company, Ltd. Sheet processing device and image forming system
US11066269B2 (en) 2019-04-11 2021-07-20 Canon Finetech Nisca Inc. Sheet folding processing apparatus and image forming system including the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10105968B2 (en) 2014-05-13 2018-10-23 Ricoh Company, Ltd. Sheet processing device and image forming system
US10363757B2 (en) 2014-05-13 2019-07-30 Ricoh Company, Ltd. Sheet processing device and image forming system
JP2018048028A (en) * 2017-11-22 2018-03-29 株式会社リコー Sheet folding device, image forming system, and sheet folding method
US11066269B2 (en) 2019-04-11 2021-07-20 Canon Finetech Nisca Inc. Sheet folding processing apparatus and image forming system including the same

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