JPH11125941A - Recording medium carrying device - Google Patents
Recording medium carrying deviceInfo
- Publication number
- JPH11125941A JPH11125941A JP9291296A JP29129697A JPH11125941A JP H11125941 A JPH11125941 A JP H11125941A JP 9291296 A JP9291296 A JP 9291296A JP 29129697 A JP29129697 A JP 29129697A JP H11125941 A JPH11125941 A JP H11125941A
- Authority
- JP
- Japan
- Prior art keywords
- recording medium
- fixing device
- conveyance path
- intermediate transfer
- transfer drum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Paper Feeding For Electrophotography (AREA)
- Color Electrophotography (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、カラー画像形成装
置における中間転写体ドラムから定着装置までの用紙搬
送途上での記録媒体のカール等による画像不良の防止に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the prevention of image defects due to curling of a recording medium while a sheet is conveyed from an intermediate transfer drum to a fixing device in a color image forming apparatus.
【０００２】[0002]
【従来の技術】従来、カラー画像形成装置における記録
媒体の搬送装置は、フルカラーの場合使用する基本色が
４色必要であり、記録媒体上面にこの各色を重ねて印刷
するが、特に中間転写体ドラムと転写ローラ、そして転
写から定着装置までの一連の搬送路上には、以下のよう
な記録媒体搬送案内手段が設けられている。2. Description of the Related Art Conventionally, a recording medium transport device in a color image forming apparatus requires four basic colors to be used in the case of full color, and these colors are superimposed and printed on the upper surface of the recording medium. The following recording medium conveyance guide means is provided on a series of conveyance paths from the drum, the transfer roller, and the transfer to the fixing device.
【０００３】１．中間転写体ドラムからの記録媒体搬送
案内手段は、中間転写体ドラムに画像担持後、転写ロー
ラで中間転写体ドラム上の画像を記録媒体に転写した
後、定着装置に向けて搬送する。この時点で中間転写体
ドラムの回転方向下流側のドラム中心長手方向にわたっ
てクリーニング装置を配設しドラム表面の残存現像剤を
除去するが、クリーニング装置手前の部位で、前述の記
録媒体の先端部分を定着装置のローラニップ部位に案内
できるようにクリーニング装置に付設した記録媒体案内
手段が設けられていた。[0003] 1. The recording medium transport guide means from the intermediate transfer drum transports the image on the intermediate transfer drum to the recording medium by the transfer roller after carrying the image on the intermediate transfer drum, and then transports the image to the fixing device. At this point, a cleaning device is disposed over the longitudinal direction of the drum on the downstream side in the rotation direction of the intermediate transfer drum to remove the residual developer on the drum surface. A recording medium guiding means attached to the cleaning device is provided so that the recording medium can be guided to a roller nip portion of the fixing device.
【０００４】２．また、別の方法としては、前記クリー
ニング装置側に記録媒体案内手段を設けるのではなく、
定着装置のローラのニップ位置手前、換言すると搬送路
上流側の記録媒体進入部位に定着カバー等を兼用した記
録媒体案内手段が設けられていた。[0004] 2. Further, as another method, instead of providing a recording medium guiding means on the cleaning device side,
Before the nip position of the roller of the fixing device, in other words, a recording medium guide unit also serving as a fixing cover or the like is provided at the recording medium entry site on the upstream side of the conveyance path.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記の
ような従来の技術には、次のような問題点があった。However, the above-mentioned prior art has the following problems.
【０００６】中間転写体ドラムとクリーニング装置の間
に記録媒体案内手段を設けた場合、記録媒体に４色の重
畳した画像を転写部位より排出して次工程部に搬送しよ
うとする際に、中間転写体がドラム状ゆえに記録媒体即
ち用紙そのものが湾曲し、装置の周囲環境温度、静電気
の作用等では最悪の場合ドラムに巻き付くという事態が
発生する。加えてカラー画像形成装置のように４色の現
像剤を記録媒体上に転写するので、搬送途上でトナー画
像そのもののが乱れるという問題が発生する。そのた
め、中間転写ドラムに極力接近して記録媒体の先端を記
録媒体案内手段で記録媒体湾曲方向と逆方向に案内させ
るのもその一つであるが、相当な取り付け寸法精度が必
要となる。When a recording medium guiding means is provided between the intermediate transfer drum and the cleaning device, when an image in which four colors are superimposed on a recording medium is discharged from a transfer portion and conveyed to a next process section, an intermediate image is formed. Since the transfer body is in the form of a drum, the recording medium, that is, the paper itself, is curved, and in the worst case, it may be wrapped around the drum due to the ambient temperature of the apparatus, the action of static electricity, and the like. In addition, since the four colors of developer are transferred onto the recording medium as in a color image forming apparatus, there is a problem that the toner image itself is disturbed during the conveyance. Therefore, one approach is to guide the leading end of the recording medium as close as possible to the intermediate transfer drum in a direction opposite to the direction in which the recording medium is curved by the recording medium guiding means. However, considerable mounting dimensional accuracy is required.
【０００７】一方、定着装置側について考えてみると、
記録媒体の進入部位は一般的には、定着装置のニップ部
の上方、換言すると上下ローラのうちの上ローラの部位
には、ニップ部より例えば１ミリ上側に、進入する記録
媒体の先端をあてるように設計し、ローラの回転の勢い
でニップ部へ突入させることが理想とされ、このために
定着装置側にそのカバー等を利用して記録媒体案内手段
を設けることが考えられるが、同様に取り付け寸法精度
が必要となる。On the other hand, when considering the fixing device side,
In general, the entry portion of the recording medium is located above the nip portion of the fixing device, in other words, at the upper roller portion of the upper and lower rollers, the front end of the recording medium entering is placed, for example, 1 mm above the nip portion. It is ideal that the recording medium guide means is designed to be inserted into the nip portion with the force of the rotation of the roller. For this purpose, it is conceivable to provide a recording medium guide means using a cover or the like on the fixing device side. Mounting dimensional accuracy is required.
【０００８】記録媒体案内手段を前記両方とも満足して
設計、製造組み立てをするには困難が増大するので、い
ずれか一方に記録媒体案内手段を設けて他方の問題点を
カバーする構造にすることは考えられるが、近年の多種
類の記録媒体を受持ち、かつモノクロもカラーも印字す
る共有プリンタであれば、自ずと中間転写体ドラムと定
着装置の搬送距離が長くなり、設計製造組み立ては困難
となる。[0008] Since it is difficult to design and manufacture and assemble the recording medium guiding means so as to satisfy both of them, it is necessary to provide a recording medium guiding means in one of them so as to cover the other problem. However, if it is a shared printer that handles various types of recording media in recent years and prints both monochrome and color, the transport distance between the intermediate transfer drum and the fixing device naturally increases, making it difficult to design, manufacture, and assemble. .
【０００９】また、前者と後者を一体化することも考え
られるが、これはプリンタ装置そのものの設計組み立て
の寸法的な制約が生じる。即ち、中間転写体ドラムと定
着装置いずれかを組み立て時点で精度維持のために動か
さねばならず設計の自由度がなく現実的には困難であ
る。It is also conceivable to integrate the former and the latter, but this imposes dimensional restrictions on the design and assembly of the printer device itself. That is, either the intermediate transfer drum or the fixing device must be moved at the time of assembling to maintain accuracy at the time of assembling, and there is no design freedom, which is practically difficult.
【００１０】本発明の目的は、上記問題点を解決し、カ
ールや画像乱れが生じることなく記録媒体の搬送を可能
とする画像形成装置における記録媒体搬送手段を提供す
ることにある。SUMMARY OF THE INVENTION It is an object of the present invention to provide a recording medium conveying means in an image forming apparatus which can solve the above-mentioned problems and can convey a recording medium without curling or image disturbance.
【００１１】[0011]
【課題を解決するための手段】上記課題を解決するため
に、本発明は、加熱ローラと定着ベルトで構成した定着
装置と、感光体ドラムと、中間転写体ドラムとから構成
したカラー画像形成装置において、前記中間転写体ドラ
ムのクリーニング装置フレームカバーに設けた記録媒体
搬送路上流側先端部を前記中間転写体ドラムに近接さ
せ、前記記録媒体搬送路下流側先端部を前記定着装置に
近接させるように配置した第１の記録媒体搬送路案内手
段と、前記定着装置フレームカバーに設けた記録媒体搬
送路下流側先端部を前記中間転写体ドラムに近接させた
第２の記録媒体搬送路案内手段とを具備した。そして、
第１の記録媒体搬送路案内手段と、前記第２の記録媒体
搬送路案内手段は、各々櫛歯状に形成し、両者の案内手
段が相互に食い合せた状態とした。In order to solve the above-mentioned problems, the present invention provides a color image forming apparatus comprising a fixing device comprising a heating roller and a fixing belt, a photosensitive drum, and an intermediate transfer drum. Wherein the upstream end of the recording medium transport path provided on the cleaning device frame cover of the intermediate transfer drum is brought close to the intermediate transfer drum, and the downstream end of the recording medium transport path is brought close to the fixing device. A first recording medium conveyance path guide unit disposed on the fixing device frame cover, and a second recording medium conveyance path guide unit provided with a downstream end of the recording medium conveyance path provided on the fixing device frame cover close to the intermediate transfer drum. Was provided. And
The first recording medium conveyance path guide means and the second recording medium conveyance path guide means are each formed in a comb-tooth shape, and both guide means are in mesh with each other.
【００１２】また、前記第１及び第２の記録媒体搬送路
案内手段は、各々櫛歯状の片毎に記録媒体の湾曲変形方
向と逆方向に記録媒体を案内可能な形状に曲面形成し
た。記録媒体の搬送姿勢は、中間転写体ドラムから定着
装置の略ニップ部位に排紙する搬送方向は水平を基準と
し、該定着装置のベルト面は、該水平面より搬送方向上
流側に向って所定角度を持ち記録媒体を案内可能な角度
に維持するようにした。Further, the first and second recording medium conveying path guiding means are each formed in a curved surface so as to be capable of guiding the recording medium in a direction opposite to the direction of the curved deformation of the recording medium for each comb-like piece. The conveyance direction of the recording medium is such that the conveyance direction for discharging the paper from the intermediate transfer drum to the substantially nip portion of the fixing device is based on the horizontal, and the belt surface of the fixing device is at a predetermined angle from the horizontal plane toward the upstream side in the conveyance direction. And the recording medium is maintained at a guideable angle.
【００１３】[0013]
【発明の実施の形態】以下、本発明の実施形態を図面に
従って説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１４】図１は、本発明のカラープリンタの概略説
明図である。FIG. 1 is a schematic explanatory view of a color printer of the present invention.
【００１５】プリンタ本体１の内部には引出し可能な給
紙ユニット３があり、給紙ユニット３には給紙カセット
２が収納されている。給紙ユニット３の上面は記録媒体
１０１の搬送路になっている。なお、１０２、１０３は
感光体ドラムであり、各々複数の色の現像剤により感光
体ドラム１０２、１０３上にトナー像を形成し、中間転
写体ドラム１０６上に４色の現像剤からなるフルカラー
ノのトナー像を転写し、中間転写ドラム１０６は該トナ
ー像を記録媒体に転写ローラ１０８の作用で転写する。
手差し給紙口１０４または給紙カセット２より給紙ロー
ラ５により給送された記録媒体１０１は、レジストロー
ラ１０より転写ローラ１０８の位置まで搬送される。記
録媒体１０１に中間転写体ドラム１０６上の画像が、転
写ローラ１０８の作用で転写される。A paper supply unit 3 that can be pulled out is provided inside the printer main body 1, and a paper supply cassette 2 is housed in the paper supply unit 3. The upper surface of the paper feed unit 3 is a conveyance path for the recording medium 101. Reference numerals 102 and 103 denote photosensitive drums, each of which forms a toner image on the photosensitive drums 102 and 103 with a plurality of colors of developer, and a full color toner comprising four colors of developer on the intermediate transfer drum 106. And the intermediate transfer drum 106 transfers the toner image to a recording medium by the action of the transfer roller 108.
The recording medium 101 fed by the paper feed roller 5 from the manual paper feed port 104 or the paper feed cassette 2 is conveyed from the registration roller 10 to the position of the transfer roller 108. The image on the intermediate transfer drum 106 is transferred to the recording medium 101 by the action of the transfer roller 108.
【００１６】この時点で、現像剤は記録媒体１０１に転
写されるが、中間転写体ドラム１０６の湾曲部に影響さ
れて記録媒体１０１が若干ながらも湾曲変形することが
あり、また規格外の薄紙等を混入させたりすると中間転
写体ドラム１０６上に記録媒体１０１が張り付いたよう
になり、記録媒体１０１のカールや画像乱れが生じる。At this point, the developer is transferred to the recording medium 101. However, the recording medium 101 may be slightly curved and deformed due to the influence of the curved portion of the intermediate transfer drum 106. When the recording medium 101 adheres to the intermediate transfer drum 106, curling of the recording medium 101 and image disturbance occur.
【００１７】本発明は、画像を乱すことなく、薄紙等を
誤って混入通紙した場合であっても記録媒体にカールを
生ぜず、安定して給送するようにした。According to the present invention, the recording medium is stably fed without curling the recording medium even when thin paper or the like is erroneously mixed and passed without disturbing the image.
【００１８】なお、１０９はクリーニング装置であり、
転写終了後の中間転写体ドラム１０６上の残留現像剤を
回収するが、このクリーニング装置１０９に後述する記
録媒体搬送路案内手段が配設されている。Reference numeral 109 denotes a cleaning device.
The residual developer remaining on the intermediate transfer drum 106 after the completion of the transfer is collected. The cleaning device 109 is provided with a recording medium conveyance path guide unit described later.
【００１９】図２は、本発明の記録媒体搬送路案内手段
を説明するための転写及び定着部の説明図である。FIG. 2 is an explanatory view of a transfer and fixing section for explaining the recording medium conveying path guide means of the present invention.
【００２０】ベルト定着装置１０５は、定着ローラ１０
５Ａとベルト部１０５Ｃで構成されており、転写後の記
録媒体１０１が定着装置１０５に進入する進入部位、一
般的にはニップ部１０５Ｂの略上方言い換えれば定着ロ
ーラ１０５Ａの部位に、例えば１ミリ上側に進入する用
紙の先端を当てるように設計し、ローラ１０５Ａの回転
方向の勢いでニップ部１０５Ｂへ突入させる方法を採用
し、この為にベルト定ている。このためにベルト定着装
置１０５の上部カバー１０５Ｄを利用した記録媒体案内
手段を設け、かつベルト１０５Ｃ側は図に示すように記
録媒体１０１の進入を円滑にするためベルト１０５Ｃ面
を傾斜させている。The belt fixing device 105 includes a fixing roller 10.
5A and a belt portion 105C. The portion where the recording medium 101 after the transfer enters the fixing device 105, generally above the nip portion 105B, in other words, at the portion of the fixing roller 105A, is, for example, 1 mm above. The paper is designed to hit the leading edge of the paper entering the nip portion, and a method is employed in which the roller is pushed into the nip portion 105B by the momentum in the rotation direction of the roller 105A. For this purpose, a recording medium guiding means using an upper cover 105D of the belt fixing device 105 is provided, and the belt 105C surface is inclined on the side of the belt 105C in order to smoothly enter the recording medium 101 as shown in the figure.
【００２１】図２において、中間転写体ドラム１０６と
転写ローラ１０８の回転軸中心を結ぶ中心線アは、記録
媒体搬送路即ち記録媒体搬送路の上流側を示し、ベルト
定着装置１０５の中心線イは、記録媒体搬送路２０２の
下流側を示している。２０１は第１と第２の記録媒体搬
送路案内部である。In FIG. 2, the center line A connecting the center of the rotation shaft of the intermediate transfer drum 106 and the transfer roller 108 indicates the recording medium conveyance path, that is, the upstream side of the recording medium conveyance path. Indicates the downstream side of the recording medium transport path 202. Reference numeral 201 denotes first and second recording medium conveyance path guides.
【００２２】図３は、記録媒体搬送路案内手段を原理的
に説明した模式図である。彎曲した記録媒体１０１の搬
送線を矢印で示し以下説明する。中間転写体ドラム１０
６と転写ローラ１０８により上面にトナー像を転写した
矢印ウで示す記録媒体１０１は、クリーニング装置１０
９のフレームに一体的に設けられた第１の記録媒体案内
部材２０３のリブ２０３Ａにあたり、矢印エのように彎
曲が逆方向に矯正される。次に記録媒体１０１は、定着
装置１０５の上部フレームカバー１０５Ｄに一体に形成
された第２の記録媒体案内部材２０４のリブ２０４Ａに
あたってベルト定着装置１０５の上部の加熱ローラ１０
５Ａの周面にあたりローラ１０５Ａの回転方向に誘われ
てベルト１０５Ｃのニップ部１０５Ｂを通過して、画像
の乱れもなく排紙される。FIG. 3 is a schematic diagram for explaining the principle of the recording medium conveyance path guiding means. The transport line of the curved recording medium 101 is indicated by an arrow and will be described below. Intermediate transfer drum 10
The recording medium 101 indicated by the arrow C on which the toner image has been transferred to the upper surface by the transfer roller 6 and the transfer roller
When the rib 203A of the first recording medium guide member 203 provided integrally with the frame No. 9 is reached, the curvature is corrected in the opposite direction as shown by arrow D. Next, the recording medium 101 contacts the ribs 204A of the second recording medium guide member 204 formed integrally with the upper frame cover 105D of the fixing device 105, and the heating roller 10 above the belt fixing device 105.
5A, the sheet is guided in the rotation direction of the roller 105A, passes through the nip portion 105B of the belt 105C, and is discharged without image disturbance.
【００２３】一方、転写部から矢印キの方向で進入した
場合は、水平線寄り、ベルト１０５Ｃが開いた角度にな
っている。搬送路アからイまでの軸線間距離にもよるが
本実施例では５度とし、矢印カの部位までの進入を円滑
に誘引させる構成にしている。On the other hand, when the belt 105C enters the transfer portion in the direction of the arrow, the belt 105C is at an open angle near the horizontal line. Although it depends on the distance between the axes from the transport path A to the axis A, the angle is set to 5 degrees in the present embodiment, and the approach to the portion indicated by the arrow F is smoothly induced.
【００２４】以上の矢印と案内手段の寸法関係は、説明
をわかりやすくするため誇大に表現している。図４は別
部材である第１、第２の記録媒体案内部材２０３と２０
４との関係を示しており、両者は互いに食い合わせたよ
うに配置されており、リブ２０３と２０４Ａは互いにリ
ブ形成方向をずらせることにより搬送された記録媒体１
０１がスムーズに搬送されるよう形成されている。第１
の記録媒体案内部材２０３と第２の記録媒体案内部材２
０４は、各々櫛歯状に形成し、両者のあんな異手段が相
互に食い合わせた状態である。また、第１及び第２の記
録媒体案内手段２０３、２０４は、各々櫛歯状の片毎に
記録媒体１０１の彎曲変形方向と逆方向に記録媒体１０
１を案内可能な形状に曲面形成している。記録媒体１０
１の搬送姿勢は、中間転写体ドラム１０６から定着装置
１０５の略ニップ部位に排紙する搬送方向は水平を基準
とし、該定着装置のベルト面は、該水平面より搬送方向
上流側に向かって所定角度をもち、記録媒体１０１を案
内可能な角度に維持するようにした。The dimensional relationship between the arrow and the guide means is exaggerated for ease of explanation. FIG. 4 shows first and second recording medium guide members 203 and 20 which are separate members.
4, the ribs 203 and 204A are arranged so as to mesh with each other, and the recording medium 1 conveyed by shifting the rib forming direction with respect to each other.
01 is transported smoothly. First
Recording medium guide member 203 and second recording medium guide member 2
Reference numeral 04 denotes a state in which each is formed in a comb-tooth shape, and such different means of both are engaged with each other. In addition, the first and second recording medium guides 203 and 204 each provide a recording medium 10 in a direction opposite to the direction of the curved deformation of the recording medium 101 for each comb-shaped piece.
1 is formed into a curved surface in a shape that can be guided. Recording medium 10
The transporting direction of the transporting device 1 is such that the transporting direction of discharging the paper from the intermediate transfer drum 106 to the substantially nip portion of the fixing device 105 is based on the horizontal direction, and the belt surface of the fixing device is predetermined upstream from the horizontal plane in the transporting direction. The recording medium 101 has an angle so that the recording medium 101 can be guided.
【００２５】[0025]
【発明の効果】以上説明したように、本発明によれば、
画像を転写した記録媒体を安全に定着装置まで搬送する
ことができる。特に複数の現像剤を用いるカラープリン
タにおいて、精度の良い美しいカラー印刷を実現する。
また、中間転写体部や定着装置部でのぺーパージャムの
トラブルも解消される。さらに、ベルト定着方式を用い
ているので、ニップ部への記録媒体の突入が正確になり
定着後のカールも抑えられる。また、案内部材を別ピー
スで構成したので、設計、組み立て製造上での微妙な寸
法位置合せも簡単になり、工数低減の結果、コストダウ
ンとなる。As described above, according to the present invention,
The recording medium on which the image has been transferred can be safely transported to the fixing device. Particularly, in a color printer using a plurality of developers, accurate and beautiful color printing is realized.
Further, paper jam troubles in the intermediate transfer body section and the fixing device section are eliminated. Further, since the belt fixing method is used, the recording medium enters the nip portion accurately and curl after fixing is suppressed. In addition, since the guide member is formed of a separate piece, delicate dimensional alignment in designing, assembling, and manufacturing is simplified, and the number of steps is reduced, resulting in cost reduction.
【図１】図１は、本発明の構成を示すカラープリンタの
概略説明図である。FIG. 1 is a schematic explanatory diagram of a color printer showing a configuration of the present invention.
【図２】図２は、本発明の記録媒体搬送路案内手段を説
明するための転写及び定着部の説明図である。FIG. 2 is an explanatory diagram of a transfer and fixing unit for explaining a recording medium conveyance path guide unit of the present invention.
【図３】図３は、記録媒体搬送路案内手段を原理的に説
明した模式図である。FIG. 3 is a schematic diagram illustrating a recording medium conveyance path guiding unit in principle;
【図４】図４は第１及び第２の記録媒体案内手段が重な
り合った状態を示す腰部説明図。FIG. 4 is an explanatory view of a waist showing a state in which first and second recording medium guiding means are overlapped;
１ プリンタ本体 ２ 給紙カセット ３ 給紙ユニット ５ 給紙ローラ １０１ 記録媒体 １０２ 感光体 １０３ 感光体 １０４ 手差し給紙口 １０５ ベルト定着装置 １０５Ａ 定着ローラ １０５Ｂ ニップ部 １０５Ｃ ベルト部 １０６ 中間転写体 １０７ レジストローラ １０８ 転写ローラ １０９ クリーニング装置 ２０１ 第１と第２の記録媒体搬送路案内部 ２０２ 記録媒体搬送路 ２０３ 第１の記録媒体案内部材 ２０３Ａ リブ ２０４ 第２の記録媒体案内部材 ２０４Ａ リブ DESCRIPTION OF SYMBOLS 1 Printer main body 2 Paper feed cassette 3 Paper feed unit 5 Paper feed roller 101 Recording medium 102 Photoconductor 103 Photoconductor 104 Manual feed port 105 Belt fixing device 105A Fixing roller 105B Nip part 105C Belt part 106 Intermediate transfer body 107 Registration roller 108 Transfer roller 109 Cleaning device 201 First and second recording medium conveyance path guide section 202 Recording medium conveyance path 203 First recording medium guide member 203A rib 204 Second recording medium guide member 204A rib
Claims (4)
置と、感光体ドラムと、中間転写体ドラムとから構成し
たカラー画像形成装置において、前記中間転写体ドラム
のクリーニング装置フレームカバーに設けた記録媒体搬
送路上流側先端部を前記中間転写体ドラムに近接させ、
前記記録媒体搬送路下流側先端部を前記定着装置に近接
させるように配置した第１の記録媒体搬送路案内手段
と、前記定着装置フレームカバーに設けた記録媒体搬送
路下流側先端部を前記中間転写体ドラムに近接させた第
２の記録媒体搬送路案内手段とを具備したことを特徴と
する記録媒体搬送装置。In a color image forming apparatus including a fixing device including a heating roller and a fixing belt, a photosensitive drum, and an intermediate transfer drum, a recording device provided on a cleaning device frame cover of the intermediate transfer drum. The medium transport path upstream end is brought close to the intermediate transfer drum,
A first recording medium conveyance path guide unit disposed so that the downstream end of the recording medium conveyance path is close to the fixing device; and a downstream end of the recording medium conveyance path provided on the fixing device frame cover. And a second recording medium conveyance path guiding means arranged in proximity to the transfer drum.
記第２の記録媒体搬送路案内手段は、各々櫛歯状に形成
し、両者の案内手段が相互に食い合せた状態であること
を特徴とする請求項１記載の記録媒体搬送装置。2. The first recording medium conveyance path guide means and the second recording medium conveyance path guide means are each formed in a comb shape, and the two guide means are engaged with each other. The recording medium transport device according to claim 1, wherein:
段は、各々櫛歯状の片毎に記録媒体の湾曲変形方向と逆
方向に記録媒体を案内可能な形状に曲面形成したことを
特徴とする請求項１記載の記録媒体搬送装置。3. The first and second recording medium conveyance path guiding means are each formed in a curved surface so as to guide the recording medium in a direction opposite to a direction of curvature deformation of the recording medium for each comb-shaped piece. The recording medium transport device according to claim 1, wherein:
ラムから定着装置の略ニップ部位に排紙する搬送方向は
水平を基準とし、該定着装置のベルト面は、該水平面よ
り搬送方向上流側に向って所定角度を持ち記録媒体を案
内可能な角度に維持するようにしたことを特徴とする請
求項１記載の記録媒体搬送装置。4. The conveying posture of the recording medium is such that the conveying direction for discharging the paper from the intermediate transfer drum to a substantially nip portion of the fixing device is horizontal, and the belt surface of the fixing device is upstream of the horizontal plane in the conveying direction. 2. A recording medium transport apparatus according to claim 1, wherein said recording medium transport apparatus has a predetermined angle toward the side and is maintained at an angle at which the recording medium can be guided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9291296A JPH11125941A (en) | 1997-10-23 | 1997-10-23 | Recording medium carrying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9291296A JPH11125941A (en) | 1997-10-23 | 1997-10-23 | Recording medium carrying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11125941A true JPH11125941A (en) | 1999-05-11 |
Family
ID=17767059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9291296A Pending JPH11125941A (en) | 1997-10-23 | 1997-10-23 | Recording medium carrying device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11125941A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11301059A (en) * | 1998-04-23 | 1999-11-02 | Ricoh Co Ltd | Image forming apparatus |
| JP2016014711A (en) * | 2014-07-01 | 2016-01-28 | ブラザー工業株式会社 | Photoreceptor cartridge and image forming apparatus |
-
1997
- 1997-10-23 JP JP9291296A patent/JPH11125941A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11301059A (en) * | 1998-04-23 | 1999-11-02 | Ricoh Co Ltd | Image forming apparatus |
| JP2016014711A (en) * | 2014-07-01 | 2016-01-28 | ブラザー工業株式会社 | Photoreceptor cartridge and image forming apparatus |
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