JP2008120577A - Image forming device - Google Patents

Image forming device Download PDF

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Publication number
JP2008120577A
JP2008120577A JP2006309123A JP2006309123A JP2008120577A JP 2008120577 A JP2008120577 A JP 2008120577A JP 2006309123 A JP2006309123 A JP 2006309123A JP 2006309123 A JP2006309123 A JP 2006309123A JP 2008120577 A JP2008120577 A JP 2008120577A
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Japan
Prior art keywords
guide
guide surface
recording material
image forming
forming apparatus
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JP2006309123A
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Japanese (ja)
Inventor
▲高▼橋俊明
Toshiaki Takahashi
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Ricoh Co Ltd
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Ricoh Co Ltd
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Priority to JP2006309123A priority Critical patent/JP2008120577A/en
Priority to US11/984,233 priority patent/US20080111296A1/en
Priority to CNA2007101864237A priority patent/CN101183229A/en
Publication of JP2008120577A publication Critical patent/JP2008120577A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/36—Article guides or smoothers, e.g. movable in operation
    • B65H5/38—Article guides or smoothers, e.g. movable in operation immovable in operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/53—Auxiliary process performed during handling process for acting on performance of handling machine
    • B65H2301/531—Cleaning parts of handling machine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2402/00—Constructional details of the handling apparatus
    • B65H2402/50—Machine elements
    • B65H2402/51—Joints, e.g. riveted or magnetic joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/06—Office-type machines, e.g. photocopiers

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Electrophotography Configuration And Component (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image forming device having easy maintenance even when any adhesive deposit such as an adhesive discharged from a label paper or a separation paper is deposited on a guide surface. <P>SOLUTION: In the image forming device for forming an image on a recording material 10, a guide means 20 constituting a part of a conveying passage with the recording material 10 passing therethrough has a guide face member 21 to be brought into contact with the recording material 10, and a guide base body 22 for attachably/detachably supporting the guide face member 21. Guide faces 23, 24 of the same shape are formed on face and back sides of the guide face member, and the face and back guide faces 23, 24 are supported by the guide base body 22 so as to be respectively held at the guide position to be brought into contact with the recording material 10. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、複写機、プリンタ、ファクシミリ及びこれらの少なくとも２つの機能を有する複合機等の画像形成装置に関するものである。   The present invention relates to an image forming apparatus such as a copying machine, a printer, a facsimile machine, and a multifunction machine having at least two of these functions.

上記形式の画像形成装置においては、用紙等の記録材を搬送する搬送路を備えているが、この搬送路も経時使用によって汚れる。そして、搬送路の汚れも放置していると、後の用紙を汚したり、搬送の妨げになることがあるため、メンテナンスが要望される。   The image forming apparatus of the above type is provided with a conveyance path for conveying a recording material such as paper, but this conveyance path also becomes dirty due to use over time. If the transport path is left unclean, the subsequent paper may be soiled or the transport may be hindered, so maintenance is required.

搬送路のメンテナンスを行う手段としては特許文献１に記載されているように、転写材搬送ガイドについた汚れを清掃部材によって清掃する技術がある。また、特許文献２に記載されているように、搬送ガイドに搬送ベルトを用いた画像形成装置において、搬送ベルトを清掃する手段を設けたものがある。さらにまた、特許文献３に記載されているように、搬送路にそれ自体を搬送することで搬送路の清掃を行うクリーニングシートを用いたものがある。   As a means for performing maintenance of the transport path, there is a technique for cleaning dirt on the transfer material transport guide with a cleaning member, as described in Patent Document 1. Further, as described in Patent Document 2, there is an image forming apparatus that uses a conveyance belt as a conveyance guide, and includes a means for cleaning the conveyance belt. Furthermore, as described in Patent Document 3, there is a sheet using a cleaning sheet that cleans the conveyance path by conveying itself to the conveyance path.

特開２００２−３６５９２９号公報JP 2002-365929 A 特開２００４−１３７０３４号公報JP 2004-137034 A 特開２００２−２９６４０号公報JP 2002-29640 A

これら特許文献に記載された清掃手段等を用いた場合、搬送路に付着した紙粉や塵などへの清掃には効果を発揮することができる。しかしながら、これらの清掃手段等ではラベル紙や剥離紙などから出る接着剤などの粘着性の付着物に対しての清掃効果が望めない。この粘着性の付着物の汚れは、ラベル紙や剥離紙等のコバから接着剤などの粘着性の付着物が漏れて用紙搬送路を汚すことがあり、特に、記録材の先端が接する記録材をターンするターン部が汚染され易い。そして、経時使用によりターン部のガイド部材の粘着性の付着物で汚れると、ラベル紙や剥離紙の記録材１０を給紙したとき、粘着性の付着物によって先端折れやジャムの搬送トラブルが発生しやすくなる。そこで、粘着性の付着物の汚れもメンテナンスして除去しなければならないが、接着剤や糊などの粘着物は一般的な清掃部材での除去が困難であるため、汚れたらガイド自体を交換する場合が殆どであった。   When the cleaning means and the like described in these patent documents are used, the effect can be exhibited for cleaning paper dust or dust attached to the conveyance path. However, with these cleaning means or the like, it is not possible to expect a cleaning effect on sticky deposits such as an adhesive coming out of label paper or release paper. This sticky deposit may cause the sticky deposit such as adhesive to leak from the edge of the label paper, release paper, etc., and soil the paper transport path. The turn part that turns is easily contaminated. And if it becomes dirty with sticky deposits on the guide member of the turn part over time, when the recording material 10 of label paper or release paper is fed, the sticky deposits cause breakage of the tip or jam conveyance trouble. It becomes easy to do. Therefore, dirt on sticky deposits must be maintained and removed, but adhesives such as adhesives and glues are difficult to remove with a general cleaning member. Most of the cases.

しかしながら、ガイド板等の交換は困難で、手間のかかる作業となった。   However, replacement of the guide plate and the like is difficult and laborious.

本発明は、上記した従来の事情に鑑み、ラベル紙や剥離紙などから出る接着剤などの粘着性の付着物がガイド面に付着してもそのメンテナンスが容易な画像形成装置を提供することを目的としている。   In view of the above-described conventional circumstances, the present invention provides an image forming apparatus that is easy to maintain even if sticky deposits such as adhesives from label paper or release paper adhere to the guide surface. It is aimed.

上記課題を解決するため、本発明は、記録材に画像を形成する画像形成装置において、前記記録材の搬送路の一部を構成しているガイド手段が、前記記録材と接してこれを案内するガイド面部材と、該ガイド面部材を脱着可能に支持するガイド基体とを有し、前記ガイド面部材にはその表裏に同形状のガイド面が形成され、かつ、表裏ガイド面のそれぞれが前記記録材を案内するガイド位置に保持されるように入れ換えで前記ガイド基体に支持可能であることを特徴とする画像形成装置を提案する。   In order to solve the above-described problems, the present invention provides an image forming apparatus for forming an image on a recording material, wherein guide means constituting a part of a conveyance path of the recording material is in contact with and guides the recording material. And a guide base that removably supports the guide surface member. The guide surface member has a guide surface having the same shape on the front and back, and each of the front and back guide surfaces is The present invention proposes an image forming apparatus characterized in that the recording medium can be supported by the guide base so as to be held at a guide position for guiding the recording material.

なお、本発明は、前記ガイド基体には前記ガイド面部材の前記記録材を案内しているガイド面と反対側のガイド面を清掃するの清掃手段が設けられていると、効果的である。   The present invention is effective when the guide base is provided with a cleaning means for cleaning the guide surface of the guide surface member opposite to the guide surface guiding the recording material.

さらに、本発明は、前記ガイド面部材が前記ガイド基体にスナップフィットにより脱着可能に支持されていると、効果的である。
さらにまた、本発明は、前記ガイド基体には支持する前記ガイド面部材と対向するガイド面が形成され、前記ガイド手段はガイド面部材が取り外されたとき、前記ガイド基体のガイド面が前記記録材を案内すると、効果的である。 Furthermore, the present invention is effective when the guide surface member is detachably supported by the guide base body by snap fit.
Still further, in the present invention, the guide base is formed with a guide surface facing the guide surface member to be supported, and the guide means is configured such that when the guide surface member is removed, the guide surface of the guide base is the recording material. It is effective to guide.

また、上記課題を解決するため、本発明は、記録材に画像を形成する画像形成装置において、前記記録材の搬送路の一部を構成しているガイド手段が、前記記録材と接してこれを案内するガイド面部材と、該ガイド面部材を脱着可能に支持するガイド基体とを有し、前記ガイド面部材が複数枚で、かつ積層されて前記ガイド基体に取り外し可能に取り付けられていることを特徴とする画像形成装置を提案する。   In order to solve the above-described problems, the present invention provides an image forming apparatus for forming an image on a recording material, wherein guide means constituting a part of a conveyance path of the recording material is in contact with the recording material. A guide surface member that guides the guide surface, and a guide base that removably supports the guide surface member, and a plurality of the guide surface members are stacked and removably attached to the guide base. An image forming apparatus characterized by the above is proposed.

なお、本発明は、前記ガイド面部材がシート状部材であると、効果的である。
さらに、本発明は、前記ガイド手段が前記搬送路の記録材をターンするターン部の外周側に設けられていると、効果的である。 In addition, this invention is effective when the said guide surface member is a sheet-like member.
Furthermore, the present invention is effective when the guide means is provided on the outer peripheral side of the turn portion for turning the recording material in the transport path.

さらにまた、本発明は、前記ガイド手段が画像形成装置本体に着脱可能に装着される給紙トレイの搬送路に設けられていると、効果的である。   Furthermore, the present invention is effective when the guide means is provided in a conveyance path of a paper feed tray that is detachably attached to the image forming apparatus main body.

本発明によれば、ガイド面上に粘着物が付着し用紙の先端折れや用紙詰まりの発生した場合でも、ガイド面を離脱し、付着した粘着物を取り除く、或いはガイド面に粘着物の付着の無い別のガイド面を装着することで、画像形成装置の搬送路から付着してしまった粘着物を容易に排除することができる。これにより、ラベル紙や剥離紙、配送伝票など一部に粘着性の物質が用いられた用紙を通紙した場合における先端折れや用紙詰まり発生を防止することができる。   According to the present invention, even when a sticky material adheres to the guide surface and the leading edge of the paper or a paper jam occurs, the guide surface is detached and the attached sticky material is removed or the sticky material adheres to the guide surface. By attaching another guide surface that does not exist, it is possible to easily remove the sticky material adhering from the conveyance path of the image forming apparatus. As a result, it is possible to prevent the leading edge from being folded or jammed when a paper having a sticky substance is used in a part thereof such as a label paper, a release paper, or a delivery slip.

以下、本発明の実施の形態を図面に従って詳細に説明する。
図１は画像形成装置の一例を示す垂直断面図であり、ここに示した画像形成装置は、その本体１内に配置されたドラム状の感光体よりなる像担持体２を有している。プリント動作時に、像担持体２は、図１における時計方向に回転駆動され、このとき帯電ローラ３によって像担持体２が所定の極性に帯電される。帯電後の像担持体２には、光書込み装置４から出射する光変調されたレーザ光（図示せず）が照射され、これによって像担持体２に静電潜像が形成される。この静電潜像は現像装置５によって、トナー像として可視像化される。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a vertical sectional view showing an example of an image forming apparatus. The image forming apparatus shown here has an image carrier 2 made of a drum-shaped photoconductor disposed in a main body 1 thereof. During the printing operation, the image carrier 2 is rotationally driven in the clockwise direction in FIG. 1, and at this time, the image carrier 2 is charged to a predetermined polarity by the charging roller 3. The charged image carrier 2 is irradiated with light-modulated laser light (not shown) emitted from the optical writing device 4, whereby an electrostatic latent image is formed on the image carrier 2. The electrostatic latent image is visualized as a toner image by the developing device 5.

一方、画像形成装置本体１内の下部には、記録材１０を収容した給紙カセット１２と、給紙ローラ１３を有する給紙装置１１が配置され、給紙ローラ１３の回転によって最上位の記録材１０が矢印方向に送り出される。送り出された記録材１０は、レジストローラ対１４によって、所定のタイミングで、像担持体２と転写ローラ６との間に給送される。このとき、転写ローラ６には所定の転写電圧が印加されており、これによって像担持体２上のトナー像が記録材１０に転写される。トナー像を転写された記録材１０は、さらに上方に搬送され、定着装置８の定着ローラと加圧ローラの間を通り、このとき記録材１０上のトナー像が熱と圧力の作用によって定着される。そして、定着を終えた記録材１０は、排紙トレイ９に排出される。一方、トナー像転写後の像担持体上に付着する転写残トナーは、クリーニング装置７によって除去される。   On the other hand, a paper feed cassette 12 containing a recording material 10 and a paper feed device 11 having a paper feed roller 13 are disposed in the lower part of the image forming apparatus main body 1. The material 10 is sent out in the direction of the arrow. The fed recording material 10 is fed between the image carrier 2 and the transfer roller 6 by the registration roller pair 14 at a predetermined timing. At this time, a predetermined transfer voltage is applied to the transfer roller 6, whereby the toner image on the image carrier 2 is transferred to the recording material 10. The recording material 10 to which the toner image has been transferred is further conveyed upward and passes between the fixing roller and the pressure roller of the fixing device 8. At this time, the toner image on the recording material 10 is fixed by the action of heat and pressure. The After the fixing, the recording material 10 is discharged to the paper discharge tray 9. On the other hand, the transfer residual toner adhering to the image carrier after the toner image transfer is removed by the cleaning device 7.

このように構成される画像形成装置において、給紙から排紙までの用紙搬送経路中の２箇所、すなわち、給紙直後と定着直後に記録材１０をターンさせるターン部が設けられている。そして、本実施形態では図２及び図３に示すように、給紙直後のターン部に外周側に用紙をスムーズにターンさせるためのガイド手段２０を設けており、該ガイド手段２０はターンする記録材１０と接するガイド面部材２１と、このガイド面部材２１を脱着可能に支持するガイド基体２２を有している。このガイド手段２０は、給紙された記録材１０の先端がガイド面部材２１に接し、そして凹状に湾曲したガイド面に沿って案内することで記録材１０をターンさせるものである。   In the image forming apparatus configured as described above, there are provided two turning portions for turning the recording material 10 immediately after paper feeding and immediately after fixing in the paper conveyance path from paper feeding to paper ejection. In this embodiment, as shown in FIGS. 2 and 3, guide means 20 for smoothly turning the paper to the outer peripheral side is provided in the turn portion immediately after paper feeding, and the guide means 20 is turned recording. It has a guide surface member 21 in contact with the material 10 and a guide base 22 that detachably supports the guide surface member 21. The guide means 20 is configured to turn the recording material 10 by guiding the leading end of the fed recording material 10 to a guide surface member 21 and guiding it along a concavely curved guide surface.

ところで、使用される記録材１０にはラベル紙や剥離紙、配送伝票など一部に粘着性の物質が用いられた用紙が用いられることも多々ある。かかるラベル紙や剥離紙等は、そのコバから接着剤などの粘着性の付着物が漏れて用紙搬送路を汚すことがあり、特に、記録材１０の先端が接する上記ガイド面部材２１は粘着性の付着物に汚染され易い。そして、経時使用によりガイド面部材２１の粘着性の付着物による汚れがひどくなると、ラベル紙や剥離紙の記録材１０を給紙したとき、粘着性の付着物によって先端折れやジャムが発生しやすくなることは先に説明した。   By the way, as the recording material 10 to be used, a paper using a sticky substance in part such as a label paper, a release paper, and a delivery slip is often used. Such label paper, release paper, and the like may cause adhesive deposits such as an adhesive to leak from the edge of the paper and contaminate the paper transport path. In particular, the guide surface member 21 with which the leading end of the recording material 10 contacts is adhesive. It is easy to be contaminated with deposits. When the guide surface member 21 is heavily soiled by sticky deposits due to use over time, when the recording material 10 of label paper or release paper is fed, the tip sticking or jamming is likely to occur due to the sticky deposits. As explained earlier.

本実施形態に係るガイド手段２０は、図３に示すように、ガイド面部材２１の表裏２面に記録材２０を案内するガイド面２３，２４がもうけられた垂直中心線に対して左右対称の形状に形成されている。そして、ガイド面部材２１はスナップフィット、すなわち、ガイド基体２２に設けられた両腕状の係止爪２５と、ガイド面部材２１に設けられた係止爪２５が係止される溝２６からなるスナップフィットを介してガイド基体２２に脱着される。   As shown in FIG. 3, the guide means 20 according to the present embodiment is symmetrical with respect to a vertical center line in which guide surfaces 23 and 24 for guiding the recording material 20 are provided on the two front and back surfaces of the guide surface member 21. It is formed into a shape. The guide surface member 21 includes a snap fit, that is, a both-armed locking claw 25 provided on the guide base 22 and a groove 26 in which the locking claw 25 provided on the guide surface member 21 is locked. It is detached from the guide base 22 via a snap fit.

このように構成された画像形成装置は、当初、ガイド面２３が記録材１０に接するガイド位置に位置するように支持され、ここで経時使用によりガイド面２３に粘着性の付着物が付着して汚れてくると、サービスマン等がガイド面部材２１をガイド基体２２から取り外す。そして、表裏を入れ換えしてガイド面２４がガイド位置に位置するようにガイド面部材２１をガイド基体２２に取り付ける。   The image forming apparatus configured as described above is initially supported so that the guide surface 23 is positioned at a guide position in contact with the recording material 10, and adhesive deposits adhere to the guide surface 23 due to use over time. When it becomes dirty, a service person or the like removes the guide surface member 21 from the guide base 22. And the guide surface member 21 is attached to the guide base | substrate 22 so that the front and back may be exchanged and the guide surface 24 may be located in a guide position.

かくして、ガイド面部材２１のガイド面２３が清掃では除去しにくい粘着性の付着物で汚れてもそのガイド面２３を２４に入れ換えることで、汚れに起因する搬送不良の発生を防止することができる。このとき、ガイド面部材２１はガイド基体２２にスナップフィットによって取り付けられているので、ガイド面部材の取り付け取り外しが容易であり、ガイド面の入れ換え作業を簡単に行うことができる。   Thus, even if the guide surface 23 of the guide surface member 21 is contaminated with adhesive deposits that are difficult to remove by cleaning, the guide surface 23 is replaced with 24, thereby preventing the occurrence of conveyance failure due to the contamination. . At this time, since the guide surface member 21 is attached to the guide base member 22 by snap fitting, the guide surface member can be easily attached and detached, and the guide surface can be easily replaced.

ところで、ガイド面部材２１のガイド面２３における粘着性の付着物の汚れはラベル紙や剥離紙、配送伝票のプリントの割合が少ないユーザーであれば、汚れの進み具合が非常に遅いので、少なくともガイド面２３、２４の入れ換えをすれば、寿命に達するまでの機械稼動中に汚れに起因する搬送不良が発生する恐れはない。   By the way, if the user has a small percentage of label paper, release paper, or delivery slip printed on the guide surface 23 of the guide surface member 21, the progress of the stain is very slow. If the surfaces 23 and 24 are replaced, there is no possibility that a conveyance failure due to dirt occurs during the operation of the machine until the end of its life.

しかし、ラベル紙や剥離紙、配送伝票のプリントの割合が多いユーザーになると、ガイド面２３、２４の入れ換えだけでは汚れに起因する搬送不良が発生する可能性がでてくる。   However, if the user has a high printing ratio of label sheets, release sheets, and delivery slips, there is a possibility that a conveyance failure due to contamination will occur only by replacing the guide surfaces 23 and 24.

そこで、図３に示す実施形態では、ガイド基体２２にもガイド面２３，２４と同様に、凹状に湾曲したガイド面２７が設けられている。このガイド面２７は、ガイド面部材２１のガイド面２３，２４が汚れた場合に、ガイド面部材２１をガイド基体２２から取り外すことで使用される。また、ガイド基体２２にガイド面２７を設けると、ガイド面部材２１の付け忘れ等が発生しても記録材１０を支障なく搬送することができる。なお、ガイド基体２２のガイド面２７とガイド面部材２１のガイド面２３，２４とのガイド位置が前後するずれが生ずるが、ガイド面部材２１を厚みが薄いものを用いればずれ量が小さく搬送上の問題にならない。   Therefore, in the embodiment shown in FIG. 3, the guide base 22 is also provided with a guide surface 27 curved in a concave shape, like the guide surfaces 23 and 24. The guide surface 27 is used by removing the guide surface member 21 from the guide base body 22 when the guide surfaces 23 and 24 of the guide surface member 21 become dirty. Further, if the guide base 27 is provided with the guide surface 27, the recording material 10 can be transported without any trouble even if the guide surface member 21 is forgotten to be attached. Although the guide position between the guide surface 27 of the guide base member 22 and the guide surfaces 23 and 24 of the guide surface member 21 is shifted back and forth, if the guide surface member 21 having a small thickness is used, the amount of shift is small and the conveyance is reduced. It will not be a problem.

このように構成すると、ラベル紙や剥離紙、配送伝票のプリントの割合が多くなるユーザーにも対応して汚れに起因する搬送不良の発生を抑えられる。しかし、ラベル紙や剥離紙、配送伝票のプリントの割合がさらに多くなるユーザーでは、対応しきれずに汚れに起因する搬送不良が発生する恐れがある。   With this configuration, it is possible to suppress the occurrence of a conveyance failure due to dirt in response to a user who increases the printing ratio of label sheets, release sheets, and delivery slips. However, a user whose label paper, release paper, or delivery slip print rate is higher may not be able to cope with it and may cause a conveyance failure due to dirt.

そこで、図４に示す本発明の別の実施形態において、ガイド面部材２１は上記実施形態と同様に表裏にガイド面２３，２４が設けられているが、ガイド基体２２にはガイド面部材２１に対向する面に清掃手段として駆動モータ２９によって駆動される回転ブラシ２８が設けられている。この回転ブラシ２８は、ガイド面部材２１の記録材１０と接するガイド面の反対面と当接する位置に配置され、かつ粘着性の付着物を削り取ることができるような剛性のあるブラシで構成されている。   Therefore, in another embodiment of the present invention shown in FIG. 4, the guide surface member 21 is provided with guide surfaces 23 and 24 on the front and back as in the above embodiment, but the guide base member 22 is provided with the guide surface member 21. A rotating brush 28 driven by a drive motor 29 is provided as a cleaning means on the opposite surface. The rotating brush 28 is arranged at a position where it abuts against the opposite surface of the guide surface of the guide surface member 21 that contacts the recording material 10, and is composed of a rigid brush that can scrape off adhesive deposits. Yes.

図５は、本発明のさらに別の実施形態を示すガイド手段３０の斜視図であって、本実施形態においてもガイド手段３０は記録材１０と接触可能なガイド面部材３１と、そのガイド面部材３１が取り外し可能に取り付けられるガイド基体３２とを有している。そして、本例のガイド面部材３１は複数枚のガイド面であるシート状部材３３からなり、この複数枚のシート状部材３３を積層接着してガイド基体３２に貼り付けている。   FIG. 5 is a perspective view of a guide means 30 showing still another embodiment of the present invention. In this embodiment, the guide means 30 also has a guide surface member 31 that can contact the recording material 10 and its guide surface member. 31 has the guide base | substrate 32 to which it attaches so that removal is possible. The guide surface member 31 of this example is composed of a plurality of sheet-like members 33 that are guide surfaces, and the plurality of sheet-like members 33 are laminated and bonded to the guide base 32.

このように構成された画像形成装置は、経時使用によりシート状部材３３が粘着性の付着物によって汚れると、図５（ｂ）に示すように、シート状部材３３を引き剥がすことで次のシート状部材３４が現われる。したがって、積層したシート状部材の枚数だけガイド面を交換することができる。   In the image forming apparatus configured as described above, when the sheet-like member 33 is soiled by an adhesive deposit due to use over time, the sheet-like member 33 is peeled off as shown in FIG. A shaped member 34 appears. Therefore, the guide surfaces can be exchanged by the number of stacked sheet-like members.

上記の如く、本発明はガイド面部材２１，３１のガイド面が汚れれば別のガイド面に変えられるので、粘着性付着物に起因する搬送不良の発生を防止できるが、ガイド面の汚れ状態を的確に把握して交換時期を特定することが難しい。すなわち、搬送不良の発生してから変えるのではなくそのよりも早めに交換したいが、あまり早過ぎても汚れが少ないため作業を途中で止めて元に戻すことになりかねない。そして、図１及び図２に示す位置に設けたガイド手段２０は汚れ状態を目視で確認しにくい場所である。このため、プリント枚数から大凡の汚れ状態を推測して交換することになるが、粘着性付着物の汚れはラベル紙や剥離紙、配送伝票のプリント枚数に比例し、総プリント枚数に必ずしも比例しないのでこの方法も不確定である。   As described above, according to the present invention, if the guide surfaces of the guide surface members 21 and 31 become dirty, the guide surface can be changed to another guide surface, so that it is possible to prevent the occurrence of conveyance failure due to adhesive deposits. It is difficult to accurately identify the replacement time. That is, instead of changing after the occurrence of a conveyance failure, it is desired to replace it earlier. However, if it is too early, there is little dirt, so the operation may be stopped halfway and restored. And the guide means 20 provided in the position shown in FIG.1 and FIG.2 is a place where it is difficult to confirm a dirt state visually. For this reason, a rough dirt state is estimated from the number of printed sheets and replaced. However, the dirt of sticky deposits is proportional to the number of printed sheets of label paper, release paper, and delivery slip, not necessarily to the total number of printed sheets. So this method is also uncertain.

そこで、図６に示す本発明のさらに別の実施形態では、ガイド手段４０のガイド面部材４１を透明なプラスチック等から作り、ガイド基体４２には画像形成装置の外壁に相当する部分にのぞき窓４４を設ける。なお、こののぞき窓４４は着脱可能なカバー部材４５で覆われ、通常は閉じている。   Therefore, in still another embodiment of the present invention shown in FIG. 6, the guide surface member 41 of the guide means 40 is made of transparent plastic or the like, and the inspection window 44 is formed on the guide base 42 at a portion corresponding to the outer wall of the image forming apparatus. Is provided. The observation window 44 is covered with a removable cover member 45 and is normally closed.

このように構成すると、カバー部材４５を取り外しのぞき窓４４を介して画像形成装置の外側から汚れ状態を確認できるので、ガイド面部材４の取り替えの時期を的確に判断することができる。   With this configuration, since the dirt state can be confirmed from the outside of the image forming apparatus through the removal window 44 with the cover member 45 removed, it is possible to accurately determine when to replace the guide surface member 4.

以上、本発明の好ましい実施形態について説明したが、本発明は上記実施形態に限定されず、各種改変できるものである。ガイド手段を給紙直後のターン部に設けたが、図１の画像形成装置では定着から排紙の間のターン部にガイド手段を設けても良い。さらには、図７に示すように、給紙直後の給紙カセット１２のガイ部に、ガイド手段２０または３０と同様に構成されたガイド手段２０’を設けても良い。給紙カセット１２に設けたガイド手段２０’は給紙カセット１２を装置本体から引き出すことで汚れ状態を視認することができる。   As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to the said embodiment, Various modifications can be made. Although the guide means is provided in the turn portion immediately after feeding, the guide means may be provided in the turn portion between fixing and paper discharge in the image forming apparatus of FIG. Furthermore, as shown in FIG. 7, a guide unit 20 ′ configured similarly to the guide unit 20 or 30 may be provided in the guy portion of the sheet feeding cassette 12 immediately after sheet feeding. The guide means 20 ′ provided in the paper feed cassette 12 can visually recognize the dirt state by pulling out the paper feed cassette 12 from the apparatus main body.

本発明に係る画像形成装置の一実施形態を示す全体概略図である。1 is an overall schematic diagram illustrating an embodiment of an image forming apparatus according to the present invention. その画像形成装置の給紙直後のターン部を示す拡大説明図である。FIG. 4 is an enlarged explanatory view showing a turn part immediately after feeding of the image forming apparatus. 本発明の一実施形態を示すガイド手段を示す斜視図である。It is a perspective view which shows the guide means which shows one Embodiment of this invention. 本発明の別の実施形態を示すガイド手段を示す斜視図である。It is a perspective view which shows the guide means which shows another embodiment of this invention. （ａ），（ｂ）は本発明のさらに別の実施形態を示すガイド手段を示す斜視図である。(A), (b) is a perspective view which shows the guide means which shows another embodiment of this invention. 本発明のまたさらに別の実施形態を示すガイド手段を示す斜視図である。It is a perspective view which shows the guide means which shows another embodiment of this invention. 本発明のガイド手段を給紙カセットに設けた例を示す説明図である。It is explanatory drawing which shows the example which provided the guide means of this invention in the paper feed cassette.

符号の説明Explanation of symbols

１１ 定着装置
２０ 排紙装置
２１ 排紙ローラ
２２，２３ カール矯正ローラ
３０ ベルト搬送手段３０
３１ 搬送ベルト
３１ａ 案内走行面
３２ プーリ DESCRIPTION OF SYMBOLS 11 Fixing device 20 Paper discharge device 21 Paper discharge roller 22, 23 Curl correction roller 30 Belt conveyance means 30
31 Conveying belt 31a Guide running surface 32 Pulley

Claims (8)

記録材に画像を形成する画像形成装置において、
前記記録材の搬送路の一部を構成しているガイド手段が、前記記録材と接してこれを案内するガイド面部材と、該ガイド面部材を脱着可能に支持するガイド基体とを有し、
前記ガイド面部材にはその表裏に同形状のガイド面が形成され、かつ、表裏ガイド面のそれぞれが前記記録材を案内するガイド位置に保持されるように入れ換えで前記ガイド基体に支持可能であることを特徴とする画像形成装置。 In an image forming apparatus for forming an image on a recording material,
The guide means constituting a part of the recording material conveyance path includes a guide surface member that contacts and guides the recording material, and a guide base that removably supports the guide surface member,
The guide surface member is formed with guide surfaces of the same shape on the front and back sides, and can be supported on the guide base by switching so that each of the front and back guide surfaces is held at a guide position for guiding the recording material. An image forming apparatus. 請求項１に記載の画像形成装置において、前記ガイド基体には前記ガイド面部材の前記記録材を案内しているガイド面と反対側のガイド面を清掃するの清掃手段が設けられていることを特徴とする画像形成装置。   The image forming apparatus according to claim 1, wherein the guide base is provided with a cleaning unit for cleaning a guide surface of the guide surface member opposite to the guide surface guiding the recording material. An image forming apparatus. 請求項１または２に記載の画像形成装置において、前記ガイド面部材が前記ガイド基体にスナップフィットにより脱着可能に支持されていることを特徴とする画像形成装置。   3. The image forming apparatus according to claim 1, wherein the guide surface member is detachably supported on the guide base body by a snap fit. 請求項１に記載の画像形成装置において、前記ガイド基体には支持する前記ガイド面部材と対向するガイド面が形成され、前記ガイド手段はガイド面部材が取り外されたとき、前記ガイド基体のガイド面が前記記録材を案内することを特徴とする画像形成装置。   The image forming apparatus according to claim 1, wherein the guide base is formed with a guide surface facing the guide surface member to be supported, and the guide means has a guide surface of the guide base when the guide surface member is removed. Guides the recording material. 記録材に画像を形成する画像形成装置において、
前記記録材の搬送路の一部を構成しているガイド手段が、前記記録材と接してこれを案内するガイド面部材と、該ガイド面部材を脱着可能に支持するガイド基体とを有し、
前記ガイド面部材が複数枚で、かつ積層されて前記ガイド基体に取り外し可能に取り付けられていることを特徴とする画像形成装置。 In an image forming apparatus for forming an image on a recording material,
The guide means constituting a part of the recording material conveyance path includes a guide surface member that contacts and guides the recording material, and a guide base that removably supports the guide surface member,
An image forming apparatus comprising: a plurality of the guide surface members stacked and removably attached to the guide base. 請求項５に記載の画像形成装置において、前記ガイド面部材がシート状部材であることを特徴とする画像形成装置。   6. The image forming apparatus according to claim 5, wherein the guide surface member is a sheet-like member. 請求項１または５に記載の画像形成装置において、前記ガイド手段が前記搬送路の記録材をターンするターン部の外周側に設けられていることを特徴とする画像形成装置。   6. The image forming apparatus according to claim 1, wherein the guide unit is provided on an outer peripheral side of a turn portion that turns the recording material on the conveyance path. 請求項１または５に記載の画像形成装置において、前記ガイド手段が画像形成装置本体に着脱可能に装着される給紙トレイの搬送路に設けられていることを特徴とする画像形成装置。   6. The image forming apparatus according to claim 1, wherein the guide unit is provided in a conveyance path of a paper feed tray that is detachably attached to the main body of the image forming apparatus.
JP2006309123A 2006-11-15 2006-11-15 Image forming device Pending JP2008120577A (en)

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