JP4843566B2 - Image forming system - Google Patents

Image forming system Download PDF

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JP4843566B2
JP4843566B2 JP2007158299A JP2007158299A JP4843566B2 JP 4843566 B2 JP4843566 B2 JP 4843566B2 JP 2007158299 A JP2007158299 A JP 2007158299A JP 2007158299 A JP2007158299 A JP 2007158299A JP 4843566 B2 JP4843566 B2 JP 4843566B2
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sheet
paper
image forming
forming apparatus
storage device
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JP2008308304A5 (en
JP2008308304A (en
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潔 鈴木
定典 小橋
義則 川合
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Ricoh Co Ltd
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Ricoh Co Ltd
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Description

本発明は、用紙矯正機構と切替えゲートを有し用紙積載機能を具備した用紙収納装置と画像形成装置からなる画像形成システムに関するものである。   The present invention relates to an image forming system including a sheet storage device having a sheet correction mechanism and a switching gate and having a sheet stacking function, and an image forming apparatus.

従来の技術を図1及び図2を用いて説明する。これらの図において1は画像形成装置、2は用紙収納装置、3は用紙矯正機構、4は用紙収容部、5は切替えゲート、6は用紙積載テーブル(以下、スタックテーブルと称す)である。   A conventional technique will be described with reference to FIGS. In these drawings, 1 is an image forming apparatus, 2 is a paper storage device, 3 is a paper correction mechanism, 4 is a paper storage unit, 5 is a switching gate, and 6 is a paper stacking table (hereinafter referred to as a stack table).

プリンタや複写機等に代表される画像形成装置1から送り込まれてくる用紙を積載収容するスタックテーブル6上に排出された用紙積載量の増加に伴いスタックテーブル6を下降させながら、スタックテーブル6上に用紙を積み重ねて収容するようにした用紙収納装置2を接続し、印刷後の用紙の取扱性や作業効率等を向上させるようにした画像形成システムが実用化されている。   On the stack table 6 while lowering the stack table 6 in accordance with the increase in the amount of sheets loaded on the stack table 6 on which the sheets fed from the image forming apparatus 1 typified by a printer or a copying machine are stacked and stored. An image forming system has been put into practical use in which a paper storage device 2 configured to store paper in a stacked manner is connected to improve handling and work efficiency of paper after printing.

このシステムに用いられる画像形成装置1は、用紙の表裏両面にトナー像を記録形成する両面印刷モードや、トナー像を有する面を上に向けて排紙させたり、逆にトナー像を有する面を下に向けて排紙させる排紙モード等を、オペレータが自由に選択することが出来るように構成されている。   The image forming apparatus 1 used in this system has a double-sided printing mode in which toner images are recorded and formed on both front and back sides of paper, a sheet having a toner image facing upward, and a sheet having a toner image. It is configured such that the operator can freely select a paper discharge mode for discharging the paper downward.

また、画像形成装置1は一般に熱定着ローラ方式が採用されている。この種の熱定着ローラ方式を経て排出された用紙は、加熱作用による熱収縮、用紙自体の構成繊維方向や画像形成装置1の搬送パス系が起因し、用紙収納装置2に送り込まれてくる用紙はカールする傾向がある。用紙のカールする傾向が強い場合、カールする傾向が弱い場合と比較して用紙収納装置2に積載される総枚数が少なくなったり、用紙収納装置2に積載される際に用紙ジャムの原因になることがある。このため、用紙収納装置2には画像形成装置1から送り込まれてくる用紙のカールを矯正するための用紙矯正機構3と切替えゲート5が実装されているものが実用化されている。   The image forming apparatus 1 generally employs a heat fixing roller system. The paper discharged through this type of heat fixing roller system is fed into the paper storage device 2 due to heat shrinkage due to heating, the direction of the constituent fibers of the paper itself, and the transport path system of the image forming apparatus 1. Tend to curl. When the tendency of the paper to curl is strong, the total number of sheets stacked on the paper storage device 2 is smaller than when the tendency to curl is weak, or a paper jam occurs when the paper storage device 2 is stacked. Sometimes. For this reason, the paper storage device 2 in which the paper correction mechanism 3 and the switching gate 5 for correcting the curl of the paper sent from the image forming apparatus 1 are mounted is put into practical use.

特開2004−10242号公報JP 2004-10242 A

画像形成装置1から用紙収納装置2に送り込まれてくる用紙のカールは、上述したように、加熱作用による熱収縮、用紙自体の構成繊維方向や画像形成装置1の搬送パス系が起因しており、用紙のカールする傾向が強い場合、切替えゲート5により用紙矯正機構3を常にOFF(無効)の状態またはON(有効)の状態で用紙を積載すると同一方向のカール(下向きカールまたは上向きカール)で積載させてしまうことになり、カールする傾向が弱い場合と比較して積載される総枚数が少なくなったり、用紙ジャムの原因になるなど用紙の整列性が劣ることがあった。   As described above, the curl of the paper sent from the image forming apparatus 1 to the paper storage device 2 is caused by the heat shrinkage due to the heating action, the constituent fiber direction of the paper itself, and the conveyance path system of the image forming apparatus 1. When there is a strong tendency to curl paper, if the paper correction mechanism 3 is always turned off (invalid) or on (valid) by the switching gate 5, the paper is loaded in the same direction (downward curl or upward curl). As a result, the total number of sheets to be stacked is reduced compared to the case where the curling tendency is weak, and paper alignment may be inferior.

本発明の目的は、このような従来技術の欠点を解消し、良好な用紙整列性を有する用紙収納装置を提供することにある。   An object of the present invention is to provide a paper storage device that eliminates the disadvantages of the prior art and has good paper alignment.

上記目的を達成するため本発明は、用紙収容部を有する画像形成装置と、前記画像形成装置の下流に備えられた用紙矯正手段と、後処理情報により該用紙矯正手段への用紙搬送を切替える切替えゲートと前記切替えゲートを制御する制御手段と、用紙積載手段を有する用紙収容装置とを備えた画像形成システムにおいて、前記画像形成装置は、前記用紙収容部から用紙を1枚送出する毎に、前記用紙に対する前記後処理情報を前記用紙収容装置に送信し、前記後処理情報に変更がない場合は、前記制御手段は、前記用紙収容装置に搬送される用紙一枚毎に、前記用紙矯正手段を用紙が通過する経路と、通過しない経路とに交に搬送するように前記切替えゲートを制御し、複数枚の用紙を前記用紙収容装置に積載することを特徴とするものである。 In order to achieve the above object, the present invention provides an image forming apparatus having a sheet storage unit, sheet correcting means provided downstream of the image forming apparatus, and switching for switching sheet conveyance to the sheet correcting means based on post-processing information. In an image forming system including a gate, a control unit that controls the switching gate, and a paper storage device having a paper stacking unit, the image forming device is configured to output the paper every time one sheet is sent from the paper storage unit. When the post-processing information for the paper is transmitted to the paper storage device, and the post-processing information is not changed, the control unit controls the paper correction unit for each paper transported to the paper storage device. intended to the path which the paper passes, characterized in that to control the switching gate to transport to the path that does not pass the intersection each other, to stack a plurality of sheets in the sheet storing device That.

本発明によれば、画像形成装置から送り込まれて来る如何なる用紙も良好な用紙整列性を実現することが可能となる。   According to the present invention, it is possible to achieve good sheet alignment for any sheet sent from the image forming apparatus.

前述のように本発明は、用紙矯正機構と切替えゲートを有し用紙積載機能を具備した用紙収納装置と画像形成装置からなる画像形成システムにおいて、前記画像形成装置から前記用紙収納装置に送られる後処理情報をもとに用紙収納装置が用紙矯正機構の切替えゲートを用紙一枚毎に交互にOFF/ON切替え制御することにより異なる方向のカールした用紙を積載させる構成になっている。   As described above, the present invention relates to an image forming system including a sheet storage device having a sheet correction mechanism and a switching gate and having a sheet stacking function and an image forming apparatus, after being sent from the image forming apparatus to the sheet storage apparatus. Based on the processing information, the sheet storage device is configured to stack the curled sheets in different directions by alternately controlling the sheet correction mechanism switching gates OFF / ON for each sheet.

図1乃至図7を用いて、用紙収納装置2に用紙を送り込む際の用紙矯正機構3の切替えゲート5の制御に関する本実施例の動作について説明する。図1は本発明の一実施例を示す用紙収納装置2と画像形成装置1の一部を断面した正面図、図2は用紙収納装置2の断面図、図3はカールした用紙の積載状態を示す図、図4は図2の用紙収納装置2で用紙矯正機構OFF時の断面図、図5は図2の用紙収納装置2で用紙矯正機構ON時の断面図、図6は用紙収納装置2の用紙矯正機構3を用紙が通過する際のタイミングチャート、図7は用紙収納装置2と画像形成装置1の制御部の構成図である。   The operation of this embodiment relating to the control of the switching gate 5 of the sheet correction mechanism 3 when a sheet is fed into the sheet storage device 2 will be described with reference to FIGS. FIG. 1 is a front view showing a section of a paper storage device 2 and an image forming apparatus 1 according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of the paper storage device 2, and FIG. 4 is a cross-sectional view of the paper storage device 2 of FIG. 2 when the paper correction mechanism is OFF, FIG. 5 is a cross-sectional view of the paper storage device 2 of FIG. 2 when the paper correction mechanism is ON, and FIG. FIG. 7 is a configuration diagram of control units of the sheet storage device 2 and the image forming apparatus 1 when the sheet passes through the sheet correction mechanism 3.

画像形成装置1は、用紙の表裏両面にトナー像を記録形成する両面印刷モードや、トナー像を有する面を上に向けて排紙させたり、逆にトナー像を有する面を下に向けて排紙させる排紙モード等を、オペレータが自由に選択することが出来るように構成されている。また、本実施例の画像形成装置1は熱定着ローラ方式を採用している。   The image forming apparatus 1 is configured to record and form a toner image on both front and back sides of a sheet of paper, to discharge a sheet having a toner image facing upward, or to discharge a sheet having a toner image facing downward. It is configured so that the operator can freely select a paper discharge mode for paper. Further, the image forming apparatus 1 of the present embodiment employs a heat fixing roller system.

用紙収納装置2は画像形成装置1の直後に接続される装置で、画像形成装置1から送り込まれる用紙を積載収容するスタックテーブル6上に排出された用紙積載量の増加に伴いスタックテーブル6を下降させながら、スタックテーブル6上に用紙を積み重ねて収容する機構及びテーブル機構を持たないサンプルトレイ7を有している。また、この用紙収納装置2には画像形成装置1から送り込まれる用紙のカールを矯正するための用紙矯正機構3が実装され、それの手前には用紙矯正機構3の経路を用紙が通過するか切替えるための切替えゲート5が実装されている。切替えゲート5は図示しない駆動手段で切替わる機構となっており、本実施例では駆動手段としてソレノイドを用いている。   The sheet storage device 2 is connected immediately after the image forming apparatus 1, and descends the stack table 6 as the amount of sheets loaded on the stack table 6 that stacks and stores sheets fed from the image forming apparatus 1 increases. However, the stacker 6 has a sample tray 7 that does not have a mechanism for stacking and storing sheets on the stack table 6 and a table mechanism. The paper storage device 2 is provided with a paper correction mechanism 3 for correcting the curl of the paper fed from the image forming apparatus 1. The paper correction mechanism 3 is switched before or after the path of the paper correction mechanism 3. For this purpose, a switching gate 5 is mounted. The switching gate 5 has a mechanism that is switched by a driving means (not shown). In this embodiment, a solenoid is used as the driving means.

これらの装置は、図7に示すように各装置間をインタフェース信号線で接続することで制御されている。インタフェース信号線は後処理情報信号線とシーケンス信号線がある。後処理情報信号線は、用紙収納装置2が後処理動作を行うために必要なデータをシリアルで送信する信号線である。具体的な情報としては、用紙幅、用紙長、用紙連量、排出モード、印刷モード(両面印刷あるいは片面印刷)などの後処理情報と、動作開始指示、停止指示、リセット指示などの印刷動作指示がある。シーケンス信号線は、用紙収納装置2をリセットするリセット信号、画像形成装置1から用紙収納装置2へ用紙が排出されることを合図する用紙排出信号、用紙収納装置2の状態が変化したことを画像形成装置1に連絡する状態読み込み要求信号がある。   These devices are controlled by connecting each device with an interface signal line as shown in FIG. The interface signal line includes a post-processing information signal line and a sequence signal line. The post-processing information signal line is a signal line for serially transmitting data necessary for the paper storage device 2 to perform a post-processing operation. Specific information includes post-processing information such as paper width, paper length, paper continuous amount, discharge mode, print mode (double-sided printing or single-sided printing), and printing operation instructions such as operation start instruction, stop instruction, and reset instruction. There is. The sequence signal lines are a reset signal for resetting the paper storage device 2, a paper discharge signal for signaling that paper is discharged from the image forming apparatus 1 to the paper storage device 2, and an image indicating that the state of the paper storage device 2 has changed. There is a status read request signal to contact the forming apparatus 1.

画像形成装置1は、図示しない上位装置から印刷に関する命令や情報を受けそれに従い印刷動作を行っている。本発明は用紙収納装置2の用紙矯正機構3の切替えゲート5制御に関するものであり、上位装置と画像形成装置1間のインタフェース処理に関する説明は省略する。   The image forming apparatus 1 receives a command or information related to printing from a host device (not shown) and performs a printing operation according to the command or information. The present invention relates to the control of the switching gate 5 of the paper correction mechanism 3 of the paper storage device 2, and a description of the interface processing between the host device and the image forming apparatus 1 is omitted.

上述の制御構成をもとに用紙収納装置2の用紙矯正機構3の切替えゲート5動作を説明する。印刷が開始されると後処理情報信号線によって画像形成装置1から用紙収納装置2に印刷開始指示コマンドが送信され、このコマンドによって用紙収納装置2はスタックテーブル6を上昇させて用紙の受け入れる準備を開始し、準備が完了したことを画像形成装置1に連絡する。   The operation of the switching gate 5 of the sheet correction mechanism 3 of the sheet storage device 2 will be described based on the above control configuration. When printing is started, a print start instruction command is transmitted from the image forming apparatus 1 to the paper storage device 2 through the post-processing information signal line. With this command, the paper storage device 2 raises the stack table 6 and prepares to receive paper. It starts and informs the image forming apparatus 1 that the preparation is completed.

準備完了の報告を画像形成装置1が受けとると、画像形成装置1は用紙収容部4より用紙を送出し、1枚の用紙を送出する毎にその用紙に対する後処理情報を用紙収納装置2に送信する。この後処理情報のうち用紙幅、用紙長、用紙連量、排出モード、片面印刷や両面印刷などの後処理情報から用紙収納装置2は、用紙矯正機構3の切替えゲート5動作を制御する。用紙収納装置2に送り込まれた1枚目の用紙は用紙先端が切替えゲート5に到達する前に用紙矯正機構3の切替えゲート5を用紙矯正機構OFF側(無効側)に切替え、用紙後端が通過するまではその状態を保持することになる(図4、図6(a)および(c)の状態)。次に後処理情報に変更がない2枚目の用紙は用紙先端が切替えゲート5に到達する前に用紙矯正機構3の切替えゲート5を用紙矯正機構ON側(有効側)に切替え、用紙後端が通過するまではその状態を保持することになる(図5、図6(b)および(d)の状態)。上記は、特に用紙のカールする傾向が強い場合に実施する。
When the image forming apparatus 1 receives a report of completion of preparation, the image forming apparatus 1 sends a sheet from the sheet storage unit 4 and transmits post-processing information for the sheet to the sheet storage apparatus 2 each time a sheet is sent. To do. Paper width of the post-processing information, paper length, the paper ream weight, the discharge mode, the paper storage device 2 from the post-processing information, such as single-sided printing and two-sided printing, that controls the switching gate 5 operation of the sheet correcting mechanism 3. 1 sheet of paper fed into the paper storage unit 2 switches the switching gate 5 of the sheet correcting mechanism 3 before reaching the gate 5 switching the sheet leading end in the sheet correcting mechanism OFF side (disabled side), the trailing edge of the sheet This state is maintained until the time passes (the state of FIGS. 4, 6A and 6C). Next, for the second sheet whose post-processing information is not changed, before the leading edge of the sheet reaches the switching gate 5, the switching gate 5 of the sheet correcting mechanism 3 is switched to the sheet correcting mechanism ON side (effective side), and the trailing edge of the sheet This state is maintained until the time passes (the state shown in FIGS. 5, 6B and 6D). The above is performed particularly when the paper has a strong tendency to curl.

以降、後処理情報に変更がない場合、用紙先端が切替えゲート5に到達する前に用紙矯正機構3の切替えゲート5が用紙一枚毎に交互に切替わり用紙後端が通過するまではその状態を保持することでスタックテーブル6またはサンプルトレイ7へ送り込まれる用紙カールの状態が下向き、上向き交互に積載されることになる(図3(c)の状態)。用紙カールが下向き、上向き交互に積載された場合の用紙中央と用紙端の高低差Hcは(図3(c)の状態)、下向きカールのみで積載された状態の用紙中央と用紙端の高低差Ha(図3(a)の状態)、または上向きカールのみで積載された状態の用紙中央と用紙端の高低差Hb(図3(b)の状態)よりも低く押さえられ良好な用紙整列性を得ることができることになる。   Thereafter, when there is no change in the post-processing information, before the leading edge of the sheet reaches the switching gate 5, the switching gate 5 of the sheet correction mechanism 3 is alternately switched for each sheet and the state is maintained until the trailing edge of the sheet passes. By holding the sheet curl, the sheet curl sent to the stack table 6 or the sample tray 7 is alternately stacked downward and upward (state shown in FIG. 3C). The height difference Hc between the paper center and the paper edge when the paper curls are alternately stacked downward and upward (state shown in FIG. 3C) is the height difference between the paper center and the paper edge when the paper curls are stacked only with the downward curl. Good sheet alignment can be achieved by lowering the height difference Hb between the center of the sheet and the edge of the sheet Hb (state of FIG. 3B) in the state of being stacked only by upward curling (state of FIG. 3A). Will be able to get.

本発明の実施例を示す用紙収納装置と画像形成装置の一部を断面した正面図である。1 is a front view of a section of a sheet storage device and an image forming apparatus according to an embodiment of the present invention. その用紙収納装置の断面図である。It is sectional drawing of the paper storage apparatus. カールした用紙の積載状態を示す図である。FIG. 6 is a diagram illustrating a loaded state of curled paper. 用紙収納装置で用紙矯正機構OFF時の断面図である。FIG. 6 is a cross-sectional view of the paper storage device when the paper correction mechanism is OFF. 用紙収納装置で用紙矯正機構ON時の断面図である。FIG. 6 is a cross-sectional view of the paper storage device when the paper correction mechanism is ON. 用紙収納装置の用紙矯正機構を用紙が通過する際のタイミングチャートである。6 is a timing chart when a sheet passes through a sheet correction mechanism of the sheet storage device. 用紙収納装置と画像形成装置の制御部の構成図である。FIG. 3 is a configuration diagram of a control unit of a sheet storage device and an image forming apparatus.

符号の説明Explanation of symbols

1は画像形成装置、2は用紙収納装置、3は用紙矯正機構、4は用紙収容部、5は切替えゲート、6は用紙積載テーブル(スタックテーブル)、7はサンプルトレイである。   Reference numeral 1 denotes an image forming apparatus, 2 denotes a paper storage device, 3 denotes a paper correction mechanism, 4 denotes a paper storage unit, 5 denotes a switching gate, 6 denotes a paper stacking table (stack table), and 7 denotes a sample tray.

Claims (1)

用紙収容部を有する画像形成装置と、前記画像形成装置の下流に備えられた用紙矯正手段と、後処理情報により該用紙矯正手段への用紙搬送を切替える切替えゲートと前記切替えゲートを制御する制御手段と、用紙積載手段を有する用紙収容装置とを備えた画像形成システムにおいて、前記画像形成装置は、前記用紙収容部から用紙を1枚送出する毎に、前記用紙に対する前記後処理情報を前記用紙収容装置に送信し、前記後処理情報に変更がない場合は、前記制御手段は、前記用紙収容装置に搬送される用紙一枚毎に、前記用紙矯正手段を用紙が通過する経路と、通過しない経路とに交互に搬送するように前記切替えゲートを制御し、複数枚の用紙を前記用紙収容装置に積載することを特徴とする画像形成システム。 An image forming apparatus having a sheet storage unit, a sheet correcting unit provided downstream of the image forming apparatus, a switching gate for switching sheet conveyance to the sheet correcting unit based on post-processing information, and a control unit for controlling the switching gate If, in an image forming system including a sheet accommodating apparatus having a sheet stacking means, wherein the image forming apparatus, each delivering 1 the sheets from said sheet storing section, the paper accommodating the post-processing information to said sheet When there is no change in the post-processing information transmitted to the apparatus, the control means, for each sheet conveyed to the sheet storage apparatus, the path through which the sheet passes through the sheet correction means and the path through which the sheet does not pass The image forming system , wherein the switching gate is controlled so as to be alternately conveyed, and a plurality of sheets are stacked on the sheet storage device .
JP2007158299A 2007-06-15 2007-06-15 Image forming system Expired - Fee Related JP4843566B2 (en)

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JP3240359B2 (en) * 1992-06-23 2001-12-17 ティーディーケイ株式会社 Spraying device for powder on sheet
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