JPH10254275A - Fixing device - Google Patents

Fixing device

Info

Publication number
JPH10254275A
JPH10254275A JP6054397A JP6054397A JPH10254275A JP H10254275 A JPH10254275 A JP H10254275A JP 6054397 A JP6054397 A JP 6054397A JP 6054397 A JP6054397 A JP 6054397A JP H10254275 A JPH10254275 A JP H10254275A
Authority
JP
Japan
Prior art keywords
transfer paper
guide roll
paper guide
roller
fixing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP6054397A
Other languages
Japanese (ja)
Other versions
JP3742181B2 (en
Inventor
Junji Nakai
順二 中井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP06054397A priority Critical patent/JP3742181B2/en
Publication of JPH10254275A publication Critical patent/JPH10254275A/en
Application granted granted Critical
Publication of JP3742181B2 publication Critical patent/JP3742181B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Fixing For Electrophotography (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

Abstract

PROBLEM TO BE SOLVED: To prevent the deterioration of transporting quality such as wavy wrinkles or wear of an image during transportation, by providing a transfer paper guide roll for preventing the skirt bent of a transfer paper on the paper discharge section from a nip part between a fixing roller and a pressure roller. SOLUTION: In this fixing device, the transfer paper guide roll 23 is installed in the rotary direction of a supporting member 22 mounted on a bracket 21, and the supporting member 22 is composed of a base stock having spring property. The transfer paper subjected to the image fixing in the nip part between rollers 1 and 2 is put on the transfer paper guide roll 23 and transported toward discharging rollers pair 8 while rotating the roll. In such a manner, the occurrence of wavy wrinkles is prevented, and moreover, at the time of both sides copying, the occurrence of a jamming originated by toner of a rear side, sticking to the guide is prevented. Then, even if the jamming occurs, since supporting member 22 is composed of a base stock having spring property, the transfer paper guide roll 23 is shifted by temperature deformation, however returns to the home position thereafter, hence the occurrence of plastic deformation is prevented.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】この発明は、転写紙上に形成
された未定着画像を、定着ローラと、この定着ローラに
加圧接触する加圧ローラとで定着する定着装置に関する
ものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing device for fixing an unfixed image formed on a transfer sheet with a fixing roller and a pressure roller which is in pressure contact with the fixing roller.

【0002】[0002]

【従来の技術】従来この種の定着装置の典型的なものと
しては、図8に示すようなものがあり、この定着装置
は、内部に加熱部材3が設けられている定着ローラ1
と、この定着ローラ1に加圧接触する加圧ローラ2とを
具えている。そして通常定着ローラ1は芯金と、その表
面に形成された離型層とを有する剛性ローラとなってお
り、一方加圧ローラ2は、芯金と、その表面に形成され
た耐熱弾性離型層とを有する弾性ローラとなっている。
そして両ローラ1,2のニップ部の後方に上下剥離爪
4,5及び上下ガイド板6,7とが設けられている。
2. Description of the Related Art FIG. 8 shows a typical example of a conventional fixing device of this type. This fixing device includes a fixing roller 1 having a heating member 3 provided therein.
And a pressure roller 2 that comes into pressure contact with the fixing roller 1. Normally, the fixing roller 1 is a rigid roller having a metal core and a release layer formed on the surface thereof, while the pressure roller 2 is composed of a metal core and a heat-resistant elastic release formed on the surface thereof. And an elastic roller having a layer.
The upper and lower peeling claws 4 and 5 and the upper and lower guide plates 6 and 7 are provided behind the nip portion between the rollers 1 and 2.

【0003】このようなものにおいては、転写紙9が剛
性ローラからなる定着ローラ1と、弾性ローラからなる
加圧ローラ2とによって、そのニップ部で加熱加圧され
ることから、転写紙9はニップ部の通過後、定着ローラ
1側にカールして定着ローラ1の表面に追従して上方に
わん曲し、このわん曲の度合いが大きくなると、自重に
よって下ガイド板7に落下して腰折れし、このようなこ
とが転写紙9の排紙ローラ対8への搬送の際、周期的に
行われて図10に示したように波をうったしわが形成され
るという問題がある。
In such a device, the transfer paper 9 is heated and pressed at its nip by the fixing roller 1 composed of a rigid roller and the pressure roller 2 composed of an elastic roller. After passing through the nip portion, the sheet curls toward the fixing roller 1 and bends upward following the surface of the fixing roller 1. When the degree of this curvature increases, the sheet falls onto the lower guide plate 7 due to its own weight and breaks down. Such a problem occurs when the transfer paper 9 is conveyed to the pair of paper discharge rollers 8 so that the transfer paper 9 is periodically performed to form wrinkles having waves as shown in FIG.

【0004】またこのようなしわは、転写紙9上の未定
着画像の画像比率の相違による転写紙9の両ローラ1,
2のニップ部からの排出搬送状況の相違によっても発生
する。すなわち画像比率が低い場合には、転写紙9上の
トナー量が少なくて定着ローラ1からの離型性が良好で
あるため、転写紙9はニップ部の接線方向に排出される
が、画像比率が高い場合には、転写紙9上のトナー量が
多いために定着ローラ1からの離型性が低下して、定着
ローラ1に巻き付いて搬送されるということになる。と
ころで通常1枚の転写紙には画像比率が高いところと、
低いところとが混在しているので、ニップ部を通過した
直後の転写紙は、定着ローラ1に巻き付いたり、離れた
りして転写紙9が上下に移動し、この移動によって波う
ちしわが形成されるという問題がある。
Such wrinkles are caused by the difference in the image ratio of the unfixed image on the transfer paper 9 due to the difference between the two rollers 1 and 2 of the transfer paper 9.
It also occurs due to the difference in the state of discharge and conveyance from the nip portion of No. 2. That is, when the image ratio is low, the transfer paper 9 is discharged in the tangential direction of the nip portion because the toner amount on the transfer paper 9 is small and the releasability from the fixing roller 1 is good. Is high, the amount of toner on the transfer paper 9 is large, so that the releasability from the fixing roller 1 is reduced, and the paper is wound around the fixing roller 1 and conveyed. By the way, one transfer paper usually has a high image ratio,
The transfer paper immediately after passing through the nip portion is wrapped around or separated from the fixing roller 1 so that the transfer paper 9 moves up and down, and wrinkles are formed by this movement. Problem.

【0005】[0005]

【発明が解決しようとする課題】そこでこのような問題
を解消するものとして、図10に示すようなものが提案さ
れており、これは下剥離爪5及び下ガイド板7の代わり
に、山型のガイドリブ12を配置したものである。このよ
うなものはしわの形成を防止するには有効であるが、近
時両面複写をする複写装置を具えた複写機が増えてお
り、このような複写機を使用する場合、転写紙9の裏面
にも定着画像があり、この定着画像の軟化したトナー像
13が、ガイドリブ12にこすれて画像が乱されるという問
題がある。
In order to solve such a problem, a device as shown in FIG. 10 has been proposed. The device shown in FIG. The guide ribs 12 are arranged. Such a copying machine is effective in preventing the formation of wrinkles. However, recently, an increasing number of copying machines have been provided with a copying machine for performing double-sided copying. There is also a fixed image on the back side, and the softened toner image of this fixed image
13 rubs against the guide ribs 12 and disturbs the image.

【0006】ところで一般に排紙ローラ対8による排紙
速度は、転写紙9にテンションを付与してしわの形成を
防止するために、ニップ部における転写紙9の速度より
大きく設定するのであるが、転写紙9の先端を排紙ロー
ラ対8がくわえるまでにおいてはしわ形成防止効果が発
生せず、また転写紙9に付与されるテンションによっ
て、転写紙9の裏面がガイドリブ12に強く押圧されてこ
すられることとなることから、画像が乱れるのに加えて
ガイドリブ12に付着したトナーに搬送されている転写紙
9の先端が、引掛かってジャムを発生する等の問題があ
る。
Generally, the discharge speed of the discharge roller pair 8 is set to be higher than the speed of the transfer paper 9 at the nip in order to apply tension to the transfer paper 9 and prevent wrinkles from being formed. The effect of preventing wrinkle formation does not occur until the leading end of the transfer paper 9 is held by the discharge roller pair 8, and the back surface of the transfer paper 9 is strongly pressed by the guide ribs 12 due to the tension applied to the transfer paper 9. Therefore, in addition to the disturbance of the image, there is a problem that the leading end of the transfer paper 9 being conveyed by the toner adhered to the guide ribs 12 is caught and a jam occurs.

【0007】またこのようなものとは別に、特開昭60-7
794号公報に開示された定着装置が提案されている。と
ころで前記のような両面複写機においては、全体をコン
パクトにするために、両面複写のための両面装置を、定
着装置を含む画像形成装置の下側に配置する場合が多
い。このような場合にこの定着装置は、定着直後の転写
紙を案内する案内部材が、ほぼ定着ローラに沿って延び
ていて、転写紙を上方に向けて搬送することとなるた
め、極端に反転することとなって搬送品質を損なうとい
う問題がある。
[0007] Separately, Japanese Patent Application Laid-Open No.
A fixing device disclosed in Japanese Patent Publication No. 794 has been proposed. Incidentally, in the above-described double-sided copying machine, in order to make the whole compact, a double-sided device for double-sided copying is often arranged below the image forming apparatus including the fixing device. In such a case, in this fixing device, the guide member that guides the transfer paper immediately after fixing extends substantially along the fixing roller and conveys the transfer paper upward, so that the fixing device is extremely inverted. As a result, there is a problem that the transport quality is impaired.

【0008】そこでこの発明の目的は、前記のような従
来の定着装置のもつ問題を解消し、転写紙の定着作動後
の搬送中に波をうったしわが形成されることがなく、両
面装置に使用した際転写紙の裏面がガイドに擦れて、こ
の裏面側の画像がこすれたり、裏面のトナーがガイド等
に付着し、その汚れによってジャムを発生することがな
く、また反転がきつくて搬送品質を損なうことがない定
着装置を提供するにある。
SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the conventional fixing device, and to prevent the formation of wrinkles with waves during the transfer of the transfer sheet after the fixing operation. When used for transfer, the back side of the transfer paper rubs against the guide, and the image on the back side is rubbed, and the toner on the back side adheres to the guide etc. An object of the present invention is to provide a fixing device that does not impair the quality.

【0009】[0009]

【課題を解決するための手段】この発明は、前記のよう
な目的を達成するために、請求項1に記載の発明は、定
着ローラと、この定着ローラに加圧接触する加圧ローラ
とを有する定着装置において、両ローラのニップ部から
の排紙部に転写紙の腰折れを防止する転写紙ガイドロー
ルを設けたことを特徴とするものである。
According to the present invention, in order to achieve the above object, the invention according to claim 1 comprises a fixing roller and a pressure roller which presses and contacts the fixing roller. In the fixing device, a transfer paper guide roll for preventing the transfer paper from being bent is provided at a paper discharge portion from a nip portion of both rollers.

【0010】請求項2に記載の発明は、請求項1に記載
の発明において、転写紙ガイドロールは、加圧ローラ側
に設けた剥離爪に設けられていることを特徴とするもの
である。
According to a second aspect of the present invention, in the first aspect of the present invention, the transfer paper guide roll is provided on a peeling claw provided on the pressure roller side.

【0011】請求項3に記載の発明は、請求項1又は2
に記載の発明において、転写紙ガイドロールは、表面に
PFA又はPTFE等の離型層を有することを特徴とす
るものである。
[0011] The invention described in claim 3 is the invention according to claim 1 or 2.
Wherein the transfer paper guide roll has a release layer such as PFA or PTFE on the surface.

【0012】[0012]

【発明の実施の形態】図面に示すこの発明の実施形態に
おいて、前記従来例と同様の部分には同一の符号を付し
て説明を省略し、また各実施形態において同様の部分の
図示説明を省略し、異なる部分についてだけ説明する。
図1〜3に示すこの発明の第1実施形態において、定着
ローラ1は芯金がアルミニウムで構成されていて、その
表面にPFA又はPTEEで構成されている離型層が形
成されており、加熱部材3はハロゲンヒータ又はニクロ
ム線ヒータで構成されている。そしてその表面の温度を
検知するサーミスタからなる温度検知手段15が設けられ
ている。
DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiments of the present invention shown in the drawings, the same parts as those in the above-mentioned conventional example are denoted by the same reference numerals, and the description thereof will be omitted. The description is omitted, and only different parts will be described.
In the first embodiment of the present invention shown in FIGS. 1 to 3, the fixing roller 1 has a core metal made of aluminum, and a release layer made of PFA or PTEE is formed on the surface of the core metal. The member 3 is constituted by a halogen heater or a nichrome wire heater. Further, a temperature detecting means 15 composed of a thermistor for detecting the temperature of the surface is provided.

【0013】加圧ローラ2は芯金の外周に、シリコンゴ
ムからなる耐熱ゴム層が設けられ、さらにその外周に、
離型性のよいPFAチューブが被覆されている。この加
圧ローラ2の軸の両端に軸受16が装着されており、この
軸受16は加圧レバー17で支持され、この加圧レバー17の
基端が図示しない機枠に枢軸18で支持され、自由端はは
同じく機枠に一端が取付けられたばね19の他端が連結さ
れていて、このばね19によって加圧ローラ2は、定着ロ
ーラ1に押圧されている。
The pressure roller 2 is provided with a heat-resistant rubber layer made of silicone rubber on the outer periphery of a cored bar.
A PFA tube with good release properties is covered. Bearings 16 are mounted on both ends of the shaft of the pressure roller 2, and the bearing 16 is supported by a pressure lever 17, and the base end of the pressure lever 17 is supported on a machine frame (not shown) by a pivot 18. The free end is connected to the other end of a spring 19, one end of which is also attached to the machine frame. The spring 19 presses the pressure roller 2 against the fixing roller 1.

【0014】図2に示すように、機枠にブラケット21が
取付けられ、このブラケット21に下剥離爪5と並列して
取付けた支持部材22に、転写紙ガイドロール23が回転可
能に取付けられていて、支持部材22は例えばSUS301
−CPS−3/4Hのようなばね性のある素材で構成さ
れている。この実施形態における転写紙ガイドロール23
は、ポリアセタール又はポリアセタールにフッ素樹脂を
含有させた樹脂で構成されている。
As shown in FIG. 2, a bracket 21 is mounted on the machine frame, and a transfer paper guide roll 23 is rotatably mounted on a support member 22 mounted on the bracket 21 in parallel with the lower release claw 5. The support member 22 is, for example, SUS301
-Made of a springy material such as CPS-3 / 4H. Transfer paper guide roll 23 in this embodiment
Is made of polyacetal or a resin obtained by adding a fluororesin to polyacetal.

【0015】この実施形態において、両ローラ1,2の
ニップ部で画像が定着された転写紙が、転写紙ガイドロ
ール23に載って、これを回転しながら排紙ローラ対8に
向けて搬送され、これによって波うってしわを発生する
ことがなく、また両面複写の際に転写紙の裏面側の画像
がこすれたり、裏面のトナーがガイド等に付着し、その
汚れによってジャムを発生したりすることがなく、また
かりにジャムが発生しても、支持部材22がばね性のある
素材で構成されていることから、一時的に変形して転写
紙ガイドロール23が変位するが、その後旧位置に復帰し
て塑性変形することが防止される。
In this embodiment, the transfer sheet on which the image is fixed at the nip portion between the rollers 1 and 2 is mounted on the transfer sheet guide roll 23 and is conveyed toward the discharge roller pair 8 while rotating it. This eliminates wrinkles and wrinkles, rubs the image on the back side of the transfer paper during double-sided copying, or causes toner on the back side to adhere to guides and the like, causing jams due to dirt. Even if a jam occurs, the transfer paper guide roll 23 is temporarily deformed and displaced because the support member 22 is made of a springy material. It is prevented from returning and being plastically deformed.

【0016】またこの実施形態において、図3に示すよ
うに、定着ローラ1と加圧ローラ2との中心を結ぶ直線
A−Aに対して直角に延びる直線B−Bと、定着ローラ
1と転写紙ガイドロール23との接線Cとの挾角θが、10
°以上であると波うち現象を解消することができたが、
13°以上になると腰の弱い転写紙ではジャムが発生する
ことがわかり、11.5±1.5°にするのが好ましい。
In this embodiment, as shown in FIG. 3, a straight line BB extending at right angles to a straight line AA connecting the centers of the fixing roller 1 and the pressure roller 2, The angle θ between the tangent C to the paper guide roll 23 and the tangent C is 10
If it is more than °, the waving phenomenon could be eliminated,
When the angle is 13 ° or more, jamming occurs with transfer paper having a weak stiffness, and it is preferable to set the angle to 11.5 ± 1.5 °.

【0017】図4,5にはこの発明の第2実施形態が示
されており、この実施形態は下剥離爪5を転写紙ガイド
ロール23と併設した点で第1実施形態と相違し、その他
の構成は第1実施形態と異なるところがない。そして前
記の相違点により、加圧ローラ2に巻付こうとする転写
紙の先端を下剥離爪5で確実にすくいあげて、転写紙ガ
イドロール23に案内して、搬送品質を向上することとな
る。
FIGS. 4 and 5 show a second embodiment of the present invention. This embodiment is different from the first embodiment in that a lower peeling claw 5 is provided along with a transfer paper guide roll 23. Is not different from the first embodiment. Due to the above difference, the leading end of the transfer paper to be wound around the pressure roller 2 is surely picked up by the lower peeling claw 5 and guided to the transfer paper guide roll 23 to improve the transport quality. .

【0018】図6にはこの発明の第3実施形態の転写紙
ガイドロール23の支持部の構造が示されており、この実
施形態においては、転写紙ガイドロール23が下剥離爪5
に枢軸24によって支持されている点で第2実施形態と相
違し、その他の構成は第2実施形態と異なるところがな
い。そして前記の相違点により、構造を簡単にし製作が
容易となるものである。
FIG. 6 shows a structure of a support portion of a transfer paper guide roll 23 according to a third embodiment of the present invention. In this embodiment, the transfer paper guide roll 23 is provided with a lower peeling claw 5.
The second embodiment is different from the second embodiment in that the second embodiment is supported by the pivot 24, and there is no difference in the other configuration from the second embodiment. And the above difference makes the structure simple and easy to manufacture.

【0019】図7にはこの発明の第4実施形態の転写紙
ガイドロール23の構造が示されており、この実施形態に
おいては、第1実施形態における転写紙ガイドロール23
の表面にPFA又はPTFE等の離型層26を設けてお
り、その他の構成は第1実施形態と異なるところがな
い。このことにより転写紙ガイドロール23の表面にトナ
ーが付着しにくく、また耐久性が向上する。
FIG. 7 shows the structure of a transfer paper guide roll 23 according to a fourth embodiment of the present invention. In this embodiment, the transfer paper guide roll 23 according to the first embodiment is shown.
Is provided with a release layer 26 such as PFA or PTFE on the surface thereof, and other configurations are not different from those of the first embodiment. As a result, the toner hardly adheres to the surface of the transfer paper guide roll 23, and the durability is improved.

【0020】[0020]

【発明の効果】この発明は上記のようであって、請求項
1に記載の発明は、定着ローラと、この定着ローラに加
圧接触する加圧ローラとを有する定着装置において、両
ローラのニップ部からの排紙部に転写紙の腰折れを防止
する転写紙ガイドロールを設けたので、転写紙の定着作
動後の搬送中に波をうったしわが形成されることがな
く、両面装置に使用した際転写紙の裏面がガイドに擦れ
て、この裏面側の画像がこすれたり、裏面のトナーがガ
イド等に付着し、その汚れによってジャムを発生するこ
とがなく、また反転がきつくて搬送品質を損なうことが
ないという効果がある。
According to the first aspect of the present invention, there is provided a fixing device having a fixing roller and a pressure roller which is in pressure contact with the fixing roller. A transfer paper guide roll is provided in the paper discharge section to prevent buckling of the transfer paper, so that wrinkles that form waves during transfer after the fixing operation of the transfer paper are not formed, can be used for double-sided devices. When the back side of the transfer paper is rubbed against the guide, the image on the back side is rubbed, and the toner on the back side adheres to the guide, etc. There is an effect that it is not damaged.

【0021】請求項2に記載の発明は、請求項1に記載
の発明において、転写紙ガイドロールは、加圧ローラ側
に設けた剥離爪に設けられているので、加圧ローラに巻
付こうとする転写紙の先端を下剥離爪で確実にすくいあ
げて、転写紙ガイドロールに案内して、搬送品質を向上
し、しかも構造が簡単であるという効果がある。
According to a second aspect of the present invention, in the first aspect of the present invention, since the transfer paper guide roll is provided on a peeling claw provided on the pressure roller side, the transfer paper guide roll is wound around the pressure roller. The leading edge of the transfer paper is surely picked up by the lower peeling claw and guided to the transfer paper guide roll to improve the transport quality and to have a simple structure.

【0022】請求項3に記載の発明は、請求項1又は2
に記載の発明において、転写紙ガイドロールは、表面に
PFA又はPTFE等の離型層を有するので、転写紙ガ
イドロールの表面にトナーが付着しにくく、また耐久性
が向上するという効果がある。
The invention described in claim 3 is the first or second invention.
In the invention described in (1), since the transfer paper guide roll has a release layer such as PFA or PTFE on the surface, toner is less likely to adhere to the surface of the transfer paper guide roll, and the durability is improved.

【図面の簡単な説明】[Brief description of the drawings]

【図1】この発明の第1実施形態の要部の正面図であ
る。
FIG. 1 is a front view of a main part of a first embodiment of the present invention.

【図2】同上の要部の斜面図である。FIG. 2 is a perspective view of a main part of the above.

【図3】同上の定着ローラ、加圧ローラ、ガイドロール
の配置図である。
FIG. 3 is a layout diagram of a fixing roller, a pressure roller, and a guide roller according to the first embodiment.

【図4】この発明の第2実施形態の要部の正面図であ
る。
FIG. 4 is a front view of a main part according to a second embodiment of the present invention.

【図5】同上の要部の斜面図である。FIG. 5 is a perspective view of a main part of the above.

【図6】この発明の第3実施形態の要部の斜面図であ
る。
FIG. 6 is a perspective view of a main part according to a third embodiment of the present invention.

【図7】この発明の第4実施形態のガイドロール要部の
斜面図である。
FIG. 7 is a perspective view of a main part of a guide roll according to a fourth embodiment of the present invention.

【図8】この発明と同種の従来の定着装置の1例の概略
正面図である。
FIG. 8 is a schematic front view of an example of a conventional fixing device of the same type as the present invention.

【図9】同上によって発生したしわの状態を示す斜面図
である。
FIG. 9 is a perspective view showing a state of wrinkles generated by the above.

【図10】この発明と同種の従来の定着装置の他の例の
概略正面図である。
FIG. 10 is a schematic front view of another example of a conventional fixing device of the same type as the present invention.

【符号の説明】[Explanation of symbols]

1 定着ローラ 2 加圧ローラ 3 加熱部材 4 上剥離爪 5 下剥離爪 6 上ガイド板 7 下ガイド板 8 排紙ローラ対 9 転写紙 16 軸受 17 加圧レバー 18 枢軸 19 ばね 21 ブラケット 22 支持部材 23 転写紙ガイドロ
ール 24 枢軸 26 離型層
DESCRIPTION OF SYMBOLS 1 Fixing roller 2 Pressure roller 3 Heating member 4 Upper peeling claw 5 Lower peeling claw 6 Upper guide plate 7 Lower guide plate 8 Discharge roller pair 9 Transfer paper 16 Bearing 17 Pressure lever 18 Axis 19 Spring 21 Bracket 22 Support member 23 Transfer paper guide roll 24 Axis 26 Release layer

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 定着ローラと、この定着ローラに加圧接
触する加圧ローラとを有する定着装置において、両ロー
ラのニップ部からの排紙部に転写紙の腰折れを防止する
転写紙ガイドロールを設けたことを特徴とする定着装
置。
In a fixing device having a fixing roller and a pressure roller which is in pressure contact with the fixing roller, a transfer paper guide roll for preventing the transfer paper from being bent at a paper discharge portion from a nip portion of both rollers. A fixing device characterized by being provided.
【請求項2】 転写紙ガイドロールは、加圧ローラ側に
設けた剥離爪に設けられていることを特徴とする請求項
1に記載の定着装置。
2. The fixing device according to claim 1, wherein the transfer paper guide roll is provided on a peeling claw provided on the pressure roller side.
【請求項3】 転写紙ガイドロールは、表面にPFA又
はPTFE等の離型層を有することを特徴とする請求項
1又は2に記載の定着装置。
3. The fixing device according to claim 1, wherein the transfer paper guide roll has a release layer such as PFA or PTFE on a surface thereof.
JP06054397A 1997-03-14 1997-03-14 Fixing device Expired - Fee Related JP3742181B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP06054397A JP3742181B2 (en) 1997-03-14 1997-03-14 Fixing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP06054397A JP3742181B2 (en) 1997-03-14 1997-03-14 Fixing device

Publications (2)

Publication Number Publication Date
JPH10254275A true JPH10254275A (en) 1998-09-25
JP3742181B2 JP3742181B2 (en) 2006-02-01

Family

ID=13145319

Family Applications (1)

Application Number Title Priority Date Filing Date
JP06054397A Expired - Fee Related JP3742181B2 (en) 1997-03-14 1997-03-14 Fixing device

Country Status (1)

Country Link
JP (1) JP3742181B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005202158A (en) * 2004-01-15 2005-07-28 Fuji Xerox Co Ltd Image forming apparatus and sheet peeling device
JP2006308783A (en) * 2005-04-27 2006-11-09 Fuji Xerox Co Ltd Fixing device and image forming apparatus using the same
CN109527851A (en) * 2019-01-16 2019-03-29 廖其明 A kind of full-automatic table skirt machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005202158A (en) * 2004-01-15 2005-07-28 Fuji Xerox Co Ltd Image forming apparatus and sheet peeling device
JP2006308783A (en) * 2005-04-27 2006-11-09 Fuji Xerox Co Ltd Fixing device and image forming apparatus using the same
JP4729966B2 (en) * 2005-04-27 2011-07-20 富士ゼロックス株式会社 Fixing device and image forming apparatus using the same
CN109527851A (en) * 2019-01-16 2019-03-29 廖其明 A kind of full-automatic table skirt machine

Also Published As

Publication number Publication date
JP3742181B2 (en) 2006-02-01

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