JPH0519653A - Heating device - Google Patents

Heating device

Info

Publication number
JPH0519653A
JPH0519653A JP3193524A JP19352491A JPH0519653A JP H0519653 A JPH0519653 A JP H0519653A JP 3193524 A JP3193524 A JP 3193524A JP 19352491 A JP19352491 A JP 19352491A JP H0519653 A JPH0519653 A JP H0519653A
Authority
JP
Japan
Prior art keywords
film
fixing
heating
heating device
recording material
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
Application number
JP3193524A
Other languages
Japanese (ja)
Inventor
Akira Kuroda
明 黒田
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP3193524A priority Critical patent/JPH0519653A/en
Publication of JPH0519653A publication Critical patent/JPH0519653A/en
Pending legal-status Critical Current

Links

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  • Fixing For Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Controlling Sheets Or Webs (AREA)

Abstract

PURPOSE:To early make the user recognize exchange of a single component such as a film or a pressure roller or necessity of the maintenance, in a film heating system heating device. CONSTITUTION:The heating device is constituted with a fixed heating body, an endless heat resistant film 8 to be moved and driven by being pressed the inner surface with contact with the heating body to face each other, a nip part being formed by inserting the film between the heating body, and a pressure roller 9 moving and driving the film while a heated member carried between the outer surface of the film at the nip part and the roller is pressed by contact with the heating body through the film. The heating device is characterized by that it has the means 15, 16 detecting the moving speed of the film and the means 17, 18 displaying or alarming based on the case the detecting speed is less than a specified value.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、加熱体に圧接させて移
動駆動させた耐熱性フィルムの加熱体側とは反対面側
に、顕画像を支持する転写紙等の被加熱材を導入して密
着させてフィルムと一緒に加熱体位置を通過させること
で加熱体の熱をフィルムを介して被加熱材に与えるフィ
ルム加熱方式の加熱装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention introduces a material to be heated, such as a transfer paper, which supports a visible image, on the surface of a heat-resistant film that is pressed against a heating member and driven to move, opposite to the heating member side. The present invention relates to a film heating type heating device which gives heat of a heating body to a material to be heated through the film by closely contacting the film and passing the heating body together with the film.

【0002】この装置は、電子写真複写機・プリンタ・
ファックス等の画像形成装置における画像加熱定着装
置、即ち電子写真・静電記録・磁気記録等の適宜の画像
形成プロセス手段により加熱溶融性の樹脂等より成るト
ナーを用いて記録材(転写材シート・エレクトロファッ
クスシート・静電記録シート・印刷紙等)に形成したト
ナー画像を永久固着像として定着する画像加熱定着装置
として活用できる。
This device is an electrophotographic copying machine, printer,
An image heat fixing device in an image forming apparatus such as a fax, that is, a recording material (transfer material sheet, transfer material sheet It can be used as an image heating fixing device that fixes a toner image formed on an electrofax sheet, electrostatic recording sheet, printing paper, etc., as a permanently fixed image.

【0003】また、例えば、画像を担持した記録材を加
熱して表面性を改質(つや出し等)する装置、仮定着処
置する装置などに使用できる。
Further, it can be used, for example, in a device for heating a recording material carrying an image to modify the surface properties (such as polishing), a device for presumptive dressing, and the like.

【0004】[0004]

【従来の技術】従来、例えば特開昭63−313182
号公報のように、固定支持された加熱体(以下ヒーター
と記す)と、このヒーターに対向圧接しつつ搬送(移動
駆動)される耐熱性の定着フィルムと、このフィルムを
介して記録材をヒーターに密着させる加圧部材を有し、
ヒーターの熱を定着フィルムを介して記録材へ付与する
ことで、記録材面に形成担持されている未定着画像を記
録材面上に加熱定着させる方式・構成の装置が提案され
ている。
2. Description of the Related Art Conventionally, for example, Japanese Patent Laid-Open No. 63-313182.
As described in Japanese Patent Publication No. JP-A-2003-242242, a fixedly supported heating element (hereinafter referred to as a heater), a heat-resistant fixing film conveyed (movingly driven) while being pressed against the heater, and a recording material as a heater through the film. Has a pressure member to be closely attached to
An apparatus has been proposed in which the heat of a heater is applied to a recording material via a fixing film to heat and fix an unfixed image formed and carried on the surface of the recording material onto the surface of the recording material.

【0005】図7に耐熱性定着フィルムとしてエンドレ
スベルトフィルムを使用したこの種の方式の画像加熱定
着装置の一例の要部の概略を示した。
FIG. 7 shows an outline of an essential part of an example of an image heat fixing device of this type using an endless belt film as a heat resistant fixing film.

【0006】8はエンドレスベルト状の薄膜耐熱性定着
フィルムである。ヒーター14は前記定着フィルム8を
介して加圧部材としての加圧ローラー9と所定の当接圧
をもって互いに圧接状態にあり定着ニップ部Nを形成し
ている。
Reference numeral 8 is an endless belt-shaped thin film heat-resistant fixing film. The heater 14 is in pressure contact with the pressure roller 9 as a pressure member through the fixing film 8 with a predetermined contact pressure, and forms a fixing nip portion N.

【0007】不図示の画像形成部側(C)から搬送され
た未定着トナー画像Taを担持した被加熱材としての記
録材Pはフィルム8に密着してフィルムと一緒に定着ニ
ップ部Nを通過していき、該定着ニップ部Nを通過する
過程で加熱、加圧される。この過程でトナー画像は軟
化、溶融、固化して永久固着像Tbを形成する。
A recording material P as a material to be heated carrying an unfixed toner image Ta conveyed from an image forming portion side (C) (not shown) adheres to the film 8 and passes through the fixing nip portion N together with the film. Then, heat and pressure are applied in the process of passing through the fixing nip portion N. In this process, the toner image is softened, melted, and solidified to form a permanently fixed image Tb.

【0008】[0008]

【発明が解決しようとする課題】しかしながらこのよう
なフィルム加熱方式の装置には以下の問題点があった。
即ち、各部材14・8・9・P間の摩擦力の関係は図8
に示すように、 a.ヒーター14とフィルム8の内面との摩擦係数μ
1、 b.定着フィルム8の外周面と記録材P面の摩擦係数μ
2、 c.フィルム8の外周面と加圧ローラー9との摩擦係数
をμ3、 とすると、 μ1<μ2<μ3 と表すことができる。
However, such a film heating type apparatus has the following problems.
That is, the relationship of the frictional force between the members 14, 8 and 9 and P is shown in FIG.
As shown in a. Coefficient of friction between the heater 14 and the inner surface of the film 8 μ
1, b. Coefficient of friction between the outer peripheral surface of the fixing film 8 and the recording material P surface μ
2, c. When the friction coefficient between the outer peripheral surface of the film 8 and the pressure roller 9 is μ3, it can be expressed as μ1 <μ2 <μ3.

【0009】しかし、例えば画像形成装置が長期間使用
されて定着フィルム8を回転駆動する加圧ローラー9の
表面および定着フィルム8の表面層が摩耗劣下し、加圧
ローラー9の表面と定着フィルム8の外面との摩擦係数
μ3が低下したり、定着フィルム8の表面層に付着する
記録材紙粉、オフセットトナーにより定着フィルム8と
記録材Pの摩擦係数μ2もまた低下する。従って先述の
摩擦係数の関係は、 μ2<μ1、μ3<μ1 のように経時的に変化するため、加圧ローラー9が回転
しているにもかかわらず定着フィルム8が停止する、い
わゆる定着フィルム8のスリップ現象が生じる。この状
態において記録材Pが導入された場合、記録材Pは搬送
されるものの記録材上の未定着画像に当接する定着フィ
ルム8が停止しているため、記録材上の画像は擦られ、
良好な定着画像は得られない。
However, for example, when the image forming apparatus is used for a long period of time, the surface of the pressure roller 9 that rotationally drives the fixing film 8 and the surface layer of the fixing film 8 are worn down, and the surface of the pressure roller 9 and the fixing film are deteriorated. The friction coefficient μ3 between the fixing film 8 and the recording material P also decreases due to the recording material paper dust and the offset toner adhering to the surface layer of the fixing film 8. Therefore, the above-mentioned relationship of the friction coefficient changes with time such as μ2 <μ1 and μ3 <μ1, so that the fixing film 8 stops even though the pressure roller 9 is rotating. Slip phenomenon occurs. When the recording material P is introduced in this state, the recording material P is conveyed, but the fixing film 8 that comes into contact with the unfixed image on the recording material is stopped, so the image on the recording material is rubbed,
A good fixed image cannot be obtained.

【0010】上記のような定着フィルム8のスリップ現
像の発生は主として加熱装置の構成単部品の耐久寿命に
よるものであるが、ユーザーにおいては加熱装置内の部
品交換、加熱装置の清掃等の適切なメンテナンス時期は
予測し難く、画像不良が出はじめてその原因の1つとし
て加熱装置の単部品の耐久寿命や要メンテナンスを考え
るため、その間にミスコピーを行なってしまう不経済が
ある。
The occurrence of slip development of the fixing film 8 as described above is mainly due to the durability life of the single component of the heating device, but for the user, it is appropriate to replace the component in the heating device or clean the heating device. It is difficult to predict the maintenance timing, and since the durability of a single component of the heating device and the maintenance required are considered as one of the causes of the occurrence of the image defect, there is an uneconomical mistaken copy.

【0011】本発明は加熱装置の単部品の交換やメンテ
ナンスの必要性をユーザーに早期に認識させることがで
きるようにすることを目的とする。
It is an object of the present invention to allow a user to promptly recognize the necessity of replacement or maintenance of a single component of a heating device.

【0012】[0012]

【課題を解決するための手段】本発明は下記の構成を特
徴とする加熱装置である。
The present invention is a heating device characterized by the following constitutions.

【0013】(1)固定の加熱体と、この加熱体に内面
が対向圧接されて移動駆動されるエンドレスの耐熱性フ
ィルムと、前記加熱体との間に前記フィルムを挟み込ん
でニップ部を形成し、そのニップ部における前記フィル
ム外面との間に搬送された、被加熱材を前記フィルムを
介して前記加熱体に圧接しつつ前記フィルムを移動駆動
する加圧ローラーとを有する加熱装置であり、前記フィ
ルムの移動速度を検知する手段と、検知速度が所定値以
下の場合においてそれにもとずく表示もしくは警告をす
る手段を有することを特徴とする前記加熱装置。
(1) A nip portion is formed by sandwiching the film between a fixed heating body, an endless heat-resistant film whose inner surface is pressed against the heating body and driven to move, and the heating body. A heating device that is conveyed between the film outer surface in the nip portion and a pressure roller that drives and drives the film while pressing the heated material through the film to the heating body, The heating device, which has means for detecting the moving speed of the film and means for displaying or warning if the detected speed is less than a predetermined value.

【0014】(2)被加熱材供給時からの定着フィルム
移動速度を検知手段により検知することで加熱体への通
電開始時を設定可能とすることを特徴とする(1)記載
の加熱装置。
(2) The heating device according to (1), wherein the start time of energization of the heating member can be set by detecting the moving speed of the fixing film after the supply of the material to be heated by the detecting means.

【0015】(3)フィルム移動速度検知手段は前記フ
ィルムの幅方向の少なくとも片側端部に配置したフォト
センサーであることを特徴とする(1)又は(2)記載
の加熱装置。
(3) The heating device according to (1) or (2), wherein the film moving speed detecting means is a photo sensor arranged at least at one end in the width direction of the film.

【0016】[0016]

【作用】即ち、加熱装置の加圧ローラーの駆動にもとず
く耐熱性フィルムの移動速度を検知する手段を設けてフ
ィルムの移動速度を検知させ、その検知移動速度が停止
を含む所定値以下の状態である場合には加熱装置の構成
単部品の耐久寿命によるフィルムスリップ現象が発生し
たものと判断できる。そこでフィルムの検知移動速度が
停止を含む所定値以下の状態が検知された場合にはそれ
にもとずき表示又は警告手段を作動させることで加熱装
置の単部品の交換やメンテナンスの必要時期に至ったこ
とを装置内の他の異常と区別してユーザーに早期に認識
させることができ、以後定着不良のコピーを出力してし
まう不経済を除去できる。
In other words, a means for detecting the moving speed of the heat-resistant film based on the driving of the pressure roller of the heating device is provided to detect the moving speed of the film, and the detected moving speed is below a predetermined value including stop. If it is in the state, it can be judged that the film slip phenomenon due to the durable life of the single component of the heating device has occurred. Therefore, when the detected moving speed of the film is detected to be below a specified value, including stop, the display or warning means is activated to reach the time when it is necessary to replace or perform maintenance on a single part of the heating device. This can be distinguished from other abnormalities in the apparatus to prompt the user to recognize it earlier, and it is possible to eliminate the uneconomical situation of outputting a copy with defective fixing thereafter.

【0017】また、前記の検知手段により記録材の、給
紙から加熱装置への搬送時間を知って、加熱装置の通電
開始を適切に制御することで加熱装置の予熱のための通
電時間を短縮化して消費電力の省力化が図られる。
Further, by knowing the transfer time of the recording material from the paper feeding to the heating device by the above-mentioned detecting means, and appropriately controlling the start of energization of the heating device, the energization time for preheating the heating device is shortened. To reduce the power consumption.

【0018】[0018]

【実施例】【Example】

<実施例1>(図1〜図4) (1)画像形成装置例 図3は本発明に従う加熱装置を定着器として用いたレー
ザービームプリンターの一例の構成略図である。
<Example 1> (FIGS. 1 to 4) (1) Example of image forming apparatus FIG. 3 is a schematic configuration diagram of an example of a laser beam printer using a heating device according to the present invention as a fixing device.

【0019】1は所定の周速度(プロセススピード)を
もって矢示の時計方向に回転駆動される電子写真感光体
ドラム(以下、ドラムと略記する)である。ドラム1は
回転過程で一次帯電器2により正または負の所定電位に
均一帯電をうけ、次いでレーザースキャナ3によるレー
ザー走査露光Lで目的画像情報の走査書き込みをうけ
る。これによりドラム1上に目的画像情報に対応した静
電潜像が形成される。
Reference numeral 1 denotes an electrophotographic photosensitive drum (hereinafter abbreviated as drum) which is rotationally driven in a clockwise direction indicated by an arrow at a predetermined peripheral speed (process speed). The drum 1 is uniformly charged to a predetermined positive or negative potential by the primary charger 2 in the course of rotation, and then is scanned and written with the target image information by the laser scanning exposure L by the laser scanner 3. As a result, an electrostatic latent image corresponding to the target image information is formed on the drum 1.

【0020】潜像の形成されたドラム1面は、現像装置
4によりトナーTの供給をうけてトナー画像として顕画
化される。
The surface of the drum 1 on which the latent image is formed is visualized as a toner image by being supplied with the toner T by the developing device 4.

【0021】次いでそのトナー画像は転写ローラー5の
位置を通過する過程で、この転写ローラー5とドラム1
との間に、給紙カセット20、給紙ローラー21、分離
爪又は分離パッド22、レジストローラー対23等から
なる給紙部から送られた記録材P面に順次転写されてい
く。ドラム1から記録材P面への転写は、転写ローラー
5で記録材P面の裏側に対しての荷電極性と逆極性の帯
電がなされることにより行われる。
Then, the toner image passes through the position of the transfer roller 5 and the transfer roller 5 and the drum 1.
In the meantime, the recording material P is sequentially transferred onto the surface of the recording material P sent from the paper feeding unit including the paper feeding cassette 20, the paper feeding roller 21, the separation claw or separation pad 22, the registration roller pair 23, and the like. The transfer from the drum 1 to the surface of the recording material P is performed by the transfer roller 5 charging the reverse side of the charging material to the back side of the recording material P surface.

【0022】トナー画像の転写を受けた記録材Pは、転
写ローラー5と逆極性の電圧を印加した除電針6で除電
され、ドラム1から分離し、定着器7へ搬送されてトナ
ー画像定着を受けて排紙ローラー24により機外へ排出
される。
The recording material P that has received the transfer of the toner image is neutralized by the static elimination needle 6 to which a voltage having a polarity opposite to that of the transfer roller 5 is applied, separated from the drum 1, and conveyed to the fixing device 7 to fix the toner image. The sheet is received and discharged by the discharge roller 24 to the outside of the machine.

【0023】記録材分離後のドラム1面はクリーニング
器25で転写残りトナー等の残留付着物の除去を受けて
清浄面化されて繰り返して作像に供される。
After the recording material is separated, the surface of the drum 1 is cleaned by a cleaning device 25 to remove residual adhered substances such as transfer residual toner, and is repeatedly used for image formation.

【0024】(2)定着器7 定着器7では記録材P面上の未定着トナー画像が加熱溶
融され、永久固着像として記録材P面に定着される。
(2) Fixing Device 7 In the fixing device 7, the unfixed toner image on the surface of the recording material P is heated and melted and fixed on the recording material P surface as a permanently fixed image.

【0025】図3にはその定着器7の横断面が示されて
いる。図1は定着器7の縦断正面図を示している。
FIG. 3 shows a cross section of the fixing device 7. FIG. 1 shows a vertical sectional front view of the fixing device 7.

【0026】定着フィルム8は耐熱性、トナー離形性、
強靭性を有する単層定着フィルムあるいは所望の表面処
理やラミネート処理をした複合層フィルムである。例え
ば耐熱処理をした約50μmのポリエステル(PET)
やポリイミド(P1)単層フィルム、あるいは前記フィ
ルム面を更に4フッ化エチレン(PTFE)で離形層付
与処理した複合層フィルムなどである。
The fixing film 8 has heat resistance, toner releasability,
It is a tough single-layer fixing film or a composite layer film that has been subjected to a desired surface treatment or lamination treatment. For example, heat-treated polyester of about 50 μm (PET)
And a polyimide (P1) single layer film, or a composite layer film obtained by further treating the film surface with a tetrafluoride ethylene (PTFE).

【0027】本実施例の定着器7では定着フィルム8は
エンドレスの円筒状で、その周方向にはニップ部Nを除
いて張力が働いておらず、加圧ローラー9との摩擦力の
みで回転走行する構成をとっている。
In the fixing device 7 of this embodiment, the fixing film 8 has an endless cylindrical shape, and no tension is applied in the circumferential direction except for the nip portion N, and the fixing film 8 is rotated only by the frictional force with the pressure roller 9. It is configured to run.

【0028】定着フィルム8の内面を長手方向全域にわ
たってガイドするフィルムガイド部材10と当接したヒ
ーター14と加圧ローラー9とは、定着フィルム8を挟
んで加圧バネ11a・11bにより所定の当接圧(例え
ばA4幅で総圧3〜6kg)をもって互いに圧接状態に
してある。
The heater 14 and the pressure roller 9 that are in contact with the film guide member 10 that guides the inner surface of the fixing film 8 over the entire lengthwise direction are in predetermined contact with the fixing spring 8 by the pressure springs 11a and 11b. They are pressed against each other with pressure (for example, A4 width and total pressure of 3 to 6 kg).

【0029】ヒーター14の表面には蒸着、スパッタリ
ング、CVD、スクリーン印刷等で形成されたTaSi
2 、銀パラジウム、Ta2 N、RuO2 、ニクロム等
の線状または細帯状の薄膜発熱抵抗部がある。
TaSi formed on the surface of the heater 14 by vapor deposition, sputtering, CVD, screen printing, etc.
There is a linear or strip-shaped thin-film heat generating resistance portion of O 2 , silver palladium, Ta 2 N, RuO 2 , nichrome, or the like.

【0030】また定着フィルム8の端部を装置組み立て
時にフィルムガイド部材10に取り付けられるフランジ
13で規制することにより、定着器7の駆動時に生じる
定着フィルム8の寄りは、制御されている。
By controlling the end portion of the fixing film 8 by the flange 13 attached to the film guide member 10 when assembling the apparatus, the deviation of the fixing film 8 generated when the fixing device 7 is driven is controlled.

【0031】未定着トナー画像を転写された記録材Pは
駆動ギア12で回転する加圧ローラー9の表面摩擦力に
より定着フィルム8とともに定着ニップ部Nへ搬送され
た後、少なくとも定着ニップ部N内では、加圧バネ11
a、11bによる当接圧によって滑ることなく、定着フ
ィルム8、加圧ローラー9と同一速度で記録材Pの進行
方向へ送られる。
The recording material P on which the unfixed toner image is transferred is conveyed to the fixing nip portion N together with the fixing film 8 by the surface frictional force of the pressure roller 9 rotated by the driving gear 12, and at least in the fixing nip portion N. Then, the pressure spring 11
The recording material P is fed in the advancing direction of the fixing film 8 and the pressure roller 9 at the same speed as the fixing film 8 and the pressure roller 9 without slipping due to the contact pressure by the a and 11b.

【0032】この定着ニップ部Nにおける通過過程を加
熱および加圧工程として、ヒーター14の熱が定着フィ
ルム8を介して記録材Pへ伝達され、記録材P上の未定
着トナーが溶融・軟化、加圧される。
The passing process in the fixing nip portion N is a heating and pressurizing process, the heat of the heater 14 is transmitted to the recording material P through the fixing film 8, and the unfixed toner on the recording material P is melted and softened. Pressurized.

【0033】定着ニップ部Nを通過した後、定着フィル
ム8と記録材Pとは引き続き溶融・軟化したトナーの粘
着力により密着したまま搬送される。この搬送過程を冷
却工程として溶融・軟化したトナーの熱が放熱され、ト
ナーは冷却固化し、記録材P上に永久固着像が形成され
る。
After passing through the fixing nip portion N, the fixing film 8 and the recording material P are conveyed while being in close contact with each other due to the adhesive force of the melted and softened toner. The heat of the melted and softened toner is dissipated as a cooling step in this conveying process, the toner is cooled and solidified, and a permanent fixed image is formed on the recording material P.

【0034】冷却工程後、定着フィルム8と記録材Pは
トナー冷却固化により容易に分離し、記録材Pは定着器
7より排出される。
After the cooling step, the fixing film 8 and the recording material P are easily separated by cooling and solidifying the toner, and the recording material P is discharged from the fixing device 7.

【0035】(3)フィルム移動速度検知手段 図2はフィルム移動速度検知手段部分の斜視図を示して
いる。即ち本実施例は定着フィルム8の少なくとも一方
の幅方向端部8aの通紙域外aに、不透明な離形層表面
処理を定着フィルム周方向で規則的に無付与8bにし、
その無付与部8bで透過型フォトセンサー15が定着フ
ィルム8の回転走行により定周期でon、offを繰り
返す構成にした。
(3) Film moving speed detecting means FIG. 2 is a perspective view of the film moving speed detecting means. That is, in this embodiment, the opaque release layer surface treatment is regularly applied 8b in the circumferential direction of the fixing film to the outside of the paper passing area a of at least one widthwise end portion 8a of the fixing film 8,
In the non-applied portion 8b, the transmissive photosensor 15 is configured to repeat turning on and off at regular intervals as the fixing film 8 rotates.

【0036】そのフォトセンサー15のon、off信
号は速度検出回路16に入力してon、offの周期か
らフィルムの移動速度が演算され、また所定の基準速度
値との比較がなされる。
The on / off signal of the photo sensor 15 is input to the speed detecting circuit 16 to calculate the moving speed of the film from the on / off cycle, and is compared with a predetermined reference speed value.

【0037】このフィルムの移動速度検知は画像形成装
置の給紙前回転時になされ、検知速度が所定の基準速度
値以下(停止状態も含む)の場合には、加熱装置の構成
単部品の耐久寿命によるフィルムスリップ現象が発生し
たものと回路16に判断させ、それにもとずき表示又は
警告手段17を作動させる。またそれとともに画像形成
装置本体を停止させる回路18を作動させる。これによ
りユーザーは、加熱装置の単部品の交換やメンテナンス
の必要時期に至ったことを装置内の他の異常と区別して
早期に認識して対処できる。
The moving speed of the film is detected during the rotation of the image forming apparatus before feeding, and when the detected speed is less than a predetermined reference speed value (including the stopped state), the durable life of the single component of the heating device The circuit 16 judges that the film slip phenomenon has occurred and the display or warning means 17 is activated accordingly. At the same time, the circuit 18 for stopping the main body of the image forming apparatus is operated. As a result, the user can recognize that it is time to replace the single component of the heating device or the time when maintenance is necessary, by distinguishing it from other abnormalities in the device and deal with it early.

【0038】また、加圧ローラー9、定着フィルム8の
耐久寿命前、即ち定着ニップN内において定着フィルム
8、加圧ローラー9、記録材Pの間ではスリップ現象が
なくフィルムの移動速度が正常状態であると判断されて
いる場合には、前記検知手段は画像形成装置への記録材
供給時から回転走行する定着フィルム8の回転数を検知
し、記録材が定着器7へ搬送される直前にヒーター14
への通電を開始することを可能にした。このように記録
材の搬送直前に通電を開始して定着器7がトナー溶融温
度に十分到達可能であるのは、本定着器の構成、低熱容
量によるものである。図4に本定着器の温度と時間の相
関関係を示した。
Before the endurance life of the pressure roller 9 and the fixing film 8, that is, in the fixing nip N, there is no slip phenomenon between the fixing film 8, the pressure roller 9 and the recording material P, and the moving speed of the film is in a normal state. If it is determined that the recording medium has been detected, the detection means detects the number of revolutions of the fixing film 8 that has been rotating since the recording material is supplied to the image forming apparatus, and immediately before the recording material is conveyed to the fixing device 7. Heater 14
It was possible to start energizing the. The reason why the fixing device 7 can sufficiently reach the toner melting temperature by starting energization immediately before the recording material is conveyed is due to the configuration and low heat capacity of the fixing device. FIG. 4 shows the correlation between the temperature and time of the fixing device.

【0039】本実施例には以下の効果がある。The present embodiment has the following effects.

【0040】(a)定着器構成部品の耐久寿命をユーザ
ーに知らせることにより、画像形成装置内の他の異常と
の判別が可能になった。また定着フィルムの停止を含む
速度不正を給紙前回転時に検知することにより定着不良
を未然に防止し、ユーザーに対して部品の早期交換、メ
ンテナンスを知らせることが可能になった。
(A) By notifying the user of the endurance life of the fixing device component, it is possible to discriminate from other abnormalities in the image forming apparatus. In addition, it is possible to prevent improper fixing by detecting speed irregularities including stop of the fixing film at the time of rotation before feeding, and notify the user of early replacement of parts and maintenance.

【0041】(b)回転走行する定着フィルムの寄り規
制部材13と定着フィルム端部の擦れによって生じる定
着フィルム端部の破断が通紙域外aに設けた先述の表面
層付与、無付与のパターン8b上に及んだ場合には、破
断部でフォトセンサー15がonするためにフォトセン
サーのon、off周期が変化し、定着フィルム8の異
常が検知されるので、定着フィルム8の端部破断が通紙
域bに及んで生じる定着不良もまた未然に防止すること
ができる。
(B) The above-mentioned pattern 8b with and without a surface layer provided outside the sheet passing area where breakage of the end portion of the fixing film caused by rubbing between the edge portion of the fixing film and the deviation regulating member 13 of the rotating fixing film In the case of reaching the upper side, since the photo sensor 15 is turned on at the break portion, the on / off cycle of the photo sensor changes, and the abnormality of the fixing film 8 is detected, so that the end portion of the fixing film 8 is broken. It is also possible to prevent inadequate fixing that occurs in the paper passing area b.

【0042】(c)記録材Pの給紙から定着器搬送直前
までの時間を定着フィルム8の回転数に寄って検知する
ことが可能になった。従って定着器7への通電を記録材
搬送直前に開始すれば、記録材給紙から定着器7への搬
送の間定着器へ通電する必要はなく画像形成装置本体の
省消費電力化の効果がある。
(C) It has become possible to detect the time from the feeding of the recording material P to immediately before the conveyance of the fixing device, depending on the number of rotations of the fixing film 8. Therefore, if the energization to the fixing device 7 is started immediately before the recording material is conveyed, it is not necessary to energize the fixing device during the conveyance from the recording material feeding to the fixing device 7, and the power saving effect of the image forming apparatus main body can be obtained. is there.

【0043】<実施例2>(図5・図6) 本実施例のものも実施例1と同様に定着フィルム8の少
なくとも幅方向の片側端部に定着フィルム8のスリップ
を検知する手段19A、19aが設けられている。定着
フィルム8はその内周面をガイドするフィルムガイド部
材10を加圧ローラー9に対して一方向のテーパー形状
にしたことによって図中A方向に寄り移動力を受ける。
この定着フィルム8の寄りは、定着フィルム8の片側端
部(寄り方向Aと逆側)に設けた耐熱樹脂製のリブ19
を寄り規制部材19Aによって規制されている。10A
はフィルム張設ローラである。
<Embodiment 2> (FIGS. 5 and 6) In the present embodiment as well, as in Embodiment 1, a means 19A for detecting a slip of the fixing film 8 at least at one side end of the fixing film 8 in the width direction, 19a is provided. The fixing film 8 receives a moving force toward the direction A in the figure by forming the film guide member 10 for guiding the inner peripheral surface thereof in a unidirectional taper shape with respect to the pressure roller 9.
The deviation of the fixing film 8 is a rib 19 made of a heat-resistant resin provided at one end of the fixing film 8 (on the side opposite to the deviation direction A).
It is regulated by the deviation regulating member 19A. 10A
Is a film tension roller.

【0044】図6は、定着フィルム8、リブ19および
寄り規制部材19Aの関係を示す。寄り規制部材19A
はフォトセンサーであり、リブ19の周方向に規則的に
設けられた凸部19aを定着フィルム8の回転速度に応
じて定周期で検知するため、実施例1と同様に定着フィ
ルム8の停止を含む移動速度不正が検知周期の変化によ
って、また記録材の定着器7への搬送時期は記録材給紙
時からの定着フィルム8の回転数によって知ることがで
きる。前記凸部19aはフォトセンサー19Aによる検
知手段の一例であり、当然のことながらフォトセンサー
をon、offするような他の手段であっても構わな
い。
FIG. 6 shows the relationship between the fixing film 8, the ribs 19 and the deviation regulating member 19A. Deviation control member 19A
Is a photo sensor, which detects the projections 19a regularly provided in the circumferential direction of the rib 19 at a constant cycle according to the rotation speed of the fixing film 8. Therefore, as in the first embodiment, the fixing film 8 is stopped. The improper moving speed can be detected by the change in the detection cycle, and the conveyance timing of the recording material to the fixing device 7 can be known by the number of rotations of the fixing film 8 after the recording material is fed. The convex portion 19a is an example of detection means by the photosensor 19A, and naturally, other means for turning the photosensor on and off may be used.

【0045】従って定着器構成部品の耐久寿命による交
換、メンテナンスをユーザーに知らせること、画像形成
装置内の異常との判別および定着器への通電を記録材の
搬送に同期して開始する等、実施例1と同様の効果があ
る。
Therefore, the user is informed of the replacement and maintenance of the fixing device component due to its durable life, the abnormality in the image forming apparatus is discriminated, and the energization of the fixing device is started in synchronization with the conveyance of the recording material. It has the same effect as in Example 1.

【0046】加えて、寄り規制部材19Aをフォトセン
サーと一体化した本構成においては、前記リブ19が常
にフォトセンサー19Aに接していること、剛性のある
リブ19の一部を用いてフォトセンサー19Aをon、
offすること等により定着フィルム8の回転速度をよ
り精度よく検知することが可能になった。また規制部材
19Aとフォトセンサーを一体にすることでコストダウ
ンの効果がある。
In addition, in the present structure in which the deviation regulating member 19A is integrated with the photo sensor, the rib 19 is always in contact with the photo sensor 19A, and the photo sensor 19A is formed by using a part of the rigid rib 19. On,
By turning it off, the rotation speed of the fixing film 8 can be detected more accurately. Further, by integrating the regulation member 19A and the photo sensor, there is an effect of cost reduction.

【0047】[0047]

【発明の効果】本発明によれば、加熱体に耐熱性フィル
ムの内面を圧接しつつ前記フィルムを回転走行させる加
熱装置において、回転走行する前記フィルムの少なくと
も幅方向の片側端部に、例えば加圧ローラー、フィルム
等の耐久寿命によって生ずるフィルムの移動速度不正を
検知する手段を設けることにより、フィルム、加圧ロー
ラー等の交換、メンテナンスを早期にユーザーーに知ら
せることで、加熱装置が画像定着器であれば未然に定着
不良を防止するとともに容易に画像形成装置内の他の異
常との判別が可能になった。また、前記検知手段により
記録材の、給紙から定着器への搬送時間を知って、定着
器の通電を開始することが可能になり、消費電力の省力
化が図られる。
According to the present invention, in a heating device for rotating the film while the inner surface of the heat-resistant film is pressed against a heating body, at least one end portion in the width direction of the rotating film is heated, for example. By providing a means for detecting irregularities in the moving speed of the film caused by the durable life of the pressure roller, film, etc., the heating device can be used as an image fixing device by promptly notifying the user of replacement and maintenance of the film, pressure roller, etc. If so, it is possible to prevent fixing failure in advance and easily distinguish it from other abnormalities in the image forming apparatus. Further, it becomes possible to start the energization of the fixing device by knowing the conveying time of the recording material from the paper feeding to the fixing device by the detecting means, and the power consumption can be saved.

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

【図1】 第1実施例定着器の縦断正面図FIG. 1 is a vertical sectional front view of a fixing device according to a first embodiment.

【図2】 フィルム移動速度検知手段部分の斜視図FIG. 2 is a perspective view of a film moving speed detecting means portion.

【図3】 該定着器を用いたレーザービームプリンタの
一例の概略構成図
FIG. 3 is a schematic configuration diagram of an example of a laser beam printer using the fixing device.

【図4】 ヒーター温度と時間との関係図[Fig. 4] Relationship between heater temperature and time

【図5】 第2実施例定着器の斜視図FIG. 5 is a perspective view of a fixing device according to a second embodiment.

【図6】 その要部の側面図FIG. 6 is a side view of the main part.

【図7】 フィルム加熱方式の加熱装置の説明図FIG. 7 is an explanatory view of a film heating type heating device.

【図8】 主要部材間の摩擦係数関係図FIG. 8 Diagram of friction coefficient relationship between main members

【符号の説明】[Explanation of symbols]

1: 電子写真感光体 2: 一次帯電器 3: レーザースキャナー 4: 現像装置 5: 転写ローラー 6: 除電針 7: 定着器 8: 定着フィルム 9: 加圧ローラー 10: ガイド 11: 加圧バネ 12: 駆動ギア 13: フランジ 14: ヒーター 15: フォトセンサー 19: リブ 19A: 寄り規制部材兼フォトセンサー 1: Electrophotographic photoreceptor 2: Primary charger 3: Laser scanner 4: Developing device 5: Transfer roller 6: Static elimination needle 7: Fixing device 8: Fixing film 9: Pressure roller 10: Guide 11: Pressure spring 12: Drive gear 13: Flange 14: Heater 15: Photo sensor 19: Rib 19A: Leaning regulation member and photo sensor

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 固定の加熱体と、この加熱体に内面が対
向圧接されて移動駆動されるエンドレスの耐熱性フィル
ムと、前記加熱体との間に前記フィルムを挟み込んでニ
ップ部を形成し、そのニップ部における前記フィルム外
面との間に搬送された被加熱材を前記フィルムを介して
前記加熱体に圧接しつつ前記フィルムを移動駆動する加
圧ローラーとを有する加熱装置であり、前記フィルムの
移動速度を検知する手段と、検知速度が所定値以下の場
合においてそれにもとずく表示もしくは警告をする手段
を有することを特徴とする加熱装置。
1. A nip portion is formed by sandwiching the film between a fixed heating body, an endless heat-resistant film whose inner surface is pressed against the heating body and driven to move, and the heating body. A heating device having a pressure roller that drives and drives the film while pressing the heated material conveyed between the film outer surface in the nip portion and the heating body through the film, A heating device comprising means for detecting a moving speed and means for displaying or warning if the detected speed is less than a predetermined value.
【請求項2】 被加熱材供給時からの定着フィルム移動
速度を検知手段により検知することで加熱体への通電開
始時を設定可能とすることを特徴とする請求項1記載の
加熱装置。
2. The heating device according to claim 1, wherein the start time of energization of the heating member can be set by detecting the moving speed of the fixing film after the supply of the material to be heated by the detecting means.
【請求項3】 フィルム移動速度検知手段は前記フィル
ムの幅方向の少なくとも片側端部に配置したフォトセン
サーであることを特徴とする請求項1又は同2記載の加
熱装置。
3. The heating device according to claim 1 or 2, wherein the film moving speed detecting means is a photosensor arranged at least at one end in the width direction of the film.
JP3193524A 1991-07-08 1991-07-08 Heating device Pending JPH0519653A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3193524A JPH0519653A (en) 1991-07-08 1991-07-08 Heating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3193524A JPH0519653A (en) 1991-07-08 1991-07-08 Heating device

Publications (1)

Publication Number Publication Date
JPH0519653A true JPH0519653A (en) 1993-01-29

Family

ID=16309509

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3193524A Pending JPH0519653A (en) 1991-07-08 1991-07-08 Heating device

Country Status (1)

Country Link
JP (1) JPH0519653A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001031405A1 (en) * 1999-10-26 2001-05-03 Matsushita Electric Industrial Co., Ltd. Image heating device and image forming device
US6408146B1 (en) 1999-04-23 2002-06-18 Canon Kabushiki Kaisha Image heating apparatus
US6704526B2 (en) * 2001-03-28 2004-03-09 Canon Kabushiki Kaisha Image heating apparatus adapted for cleaning of speed detection mark
US7596332B2 (en) * 2004-03-03 2009-09-29 Panasonic Corporation Fixing apparatus and image forming apparatus including power suppression
JP2011028088A (en) * 2009-07-28 2011-02-10 Ricoh Co Ltd Fixing device and image forming apparatus
JP2015004783A (en) * 2013-06-20 2015-01-08 京セラドキュメントソリューションズ株式会社 Fixing device and image forming apparatus
JP2017187574A (en) * 2016-04-04 2017-10-12 京セラドキュメントソリューションズ株式会社 Fixing device and image forming apparatus
JP2019003105A (en) * 2017-06-16 2019-01-10 コニカミノルタ株式会社 Image forming apparatus and life determination system
JP2019124737A (en) * 2018-01-12 2019-07-25 コニカミノルタ株式会社 Fixing device and image forming apparatus
JP2020052251A (en) * 2018-09-27 2020-04-02 コニカミノルタ株式会社 Method for predicting life of image forming apparatus and component thereof

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6408146B1 (en) 1999-04-23 2002-06-18 Canon Kabushiki Kaisha Image heating apparatus
JP2010108005A (en) * 1999-10-26 2010-05-13 Panasonic Corp Image forming apparatus
US6725009B1 (en) 1999-10-26 2004-04-20 Matsushita Electric Industrial Co., Ltd. Image heating device and image forming apparatus using the same
US6845226B2 (en) 1999-10-26 2005-01-18 Matsushita Electric Industrial Co., Ltd. Image heating device and image forming apparatus using the same
WO2001031405A1 (en) * 1999-10-26 2001-05-03 Matsushita Electric Industrial Co., Ltd. Image heating device and image forming device
US6704526B2 (en) * 2001-03-28 2004-03-09 Canon Kabushiki Kaisha Image heating apparatus adapted for cleaning of speed detection mark
US7596332B2 (en) * 2004-03-03 2009-09-29 Panasonic Corporation Fixing apparatus and image forming apparatus including power suppression
JP2011028088A (en) * 2009-07-28 2011-02-10 Ricoh Co Ltd Fixing device and image forming apparatus
JP2015004783A (en) * 2013-06-20 2015-01-08 京セラドキュメントソリューションズ株式会社 Fixing device and image forming apparatus
JP2017187574A (en) * 2016-04-04 2017-10-12 京セラドキュメントソリューションズ株式会社 Fixing device and image forming apparatus
JP2019003105A (en) * 2017-06-16 2019-01-10 コニカミノルタ株式会社 Image forming apparatus and life determination system
JP2019124737A (en) * 2018-01-12 2019-07-25 コニカミノルタ株式会社 Fixing device and image forming apparatus
JP2020052251A (en) * 2018-09-27 2020-04-02 コニカミノルタ株式会社 Method for predicting life of image forming apparatus and component thereof

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