JPS6087377A - Heat fixing device - Google Patents
Heat fixing deviceInfo
- Publication number
- JPS6087377A JPS6087377A JP19684383A JP19684383A JPS6087377A JP S6087377 A JPS6087377 A JP S6087377A JP 19684383 A JP19684383 A JP 19684383A JP 19684383 A JP19684383 A JP 19684383A JP S6087377 A JPS6087377 A JP S6087377A
- Authority
- JP
- Japan
- Prior art keywords
- heater
- temperature
- heating roller
- period
- roller
- 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
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
- G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
- G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
- G03G15/2039—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat with means for controlling the fixing temperature
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fixing For Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は電子写真装置、静電記録装置叫の記録装置に設
けられる加熱定着装置に関するものであり、詳しくは未
定着トナー両像を記録シートに定着するために加熱処理
又は加熱加圧処理するだめの回転体の表面温度を極めて
良好に制御する加熱定着装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat fixing device installed in a recording device such as an electrophotographic device or an electrostatic recording device. The present invention also relates to a heat fixing device that extremely well controls the surface temperature of a rotating body that is subjected to heat and pressure treatment.
本発明の目的は、ウェイトタイムを短縮し、且つ限られ
た■、力を有効に利用して省エネルギー化を図った加熱
定着装置を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a heat fixing device that reduces wait time and effectively utilizes limited force to save energy.
本発明は、ヒータを内蔵する加熱ローラと、これに圧接
する加圧ローラとの間にトナー像を担持したシートを通
過させてトナー像を該シートに定着させる加熱定着装置
において、加熱ローラに内蔵されたヒータは高゛区力の
第１ヒータと低電力の第２ヒータとからなり、ウェイト
期間中は両ヒータをオンに保ち、スタンバイ期間中は第
１ヒータをオフに保って、第２ヒータのみの制御によシ
加熱ローラ表面温度を所定温度に調節し、コピー動作期
間中は第２ヒータをオフに保って第１ヒータのみの制御
によシ加熱ローラ表面温度を所定温度にＰＡ痴すること
を特徴とするものである。The present invention provides a heat fixing device that fixes the toner image on the sheet by passing a sheet carrying a toner image between a heating roller that has a built-in heater and a pressure roller that is in pressure contact with the heating roller. The heater consists of a high-power first heater and a low-power second heater. During the wait period, both heaters are kept on, and during the standby period, the first heater is kept off and the second heater is turned on. The surface temperature of the heating roller is adjusted to a predetermined temperature by controlling only the first heater, and the second heater is kept off during the copying operation period, and the surface temperature of the heating roller is adjusted to a predetermined temperature by controlling only the first heater. It is characterized by this.
以下に、本発明に係る加熱定着装置の適用可能な電子写
真装置の一例を第１図示す。この装置における静電潜像
形成のための感光層並びに形成プロセスは、特公昭４２
−２３９１０号公報に記載のものに基づいているが、こ
れらに限定されるものではなく、特公昭４４−２’０４
０号公報、同４２−１９７４８号公報、同４３−２４７
４８号公報、同４５−３７９５７号公報、同４９−２７
０４８号公報、同４４−１３４３７号公報、同４５−２
４０７７号公報、同４３−１７９４７−号公報、同４５
−２５２３６号公報、その他、周知のものが適用できる
。図示の装置について説明を加える。An example of an electrophotographic apparatus to which the heat fixing device according to the present invention can be applied is shown in FIG. 1 below. The photosensitive layer and formation process for forming an electrostatic latent image in this device were disclosed in Japanese Patent Publication No. 42
-23910, but is not limited thereto,
Publication No. 0, Publication No. 42-19748, Publication No. 43-247
Publication No. 48, Publication No. 45-37957, Publication No. 49-27
No. 048, No. 44-13437, No. 45-2
No. 4077, No. 43-17947, No. 45
-25236 publication and other well-known methods can be applied. A description of the illustrated device will be added.
金属円筒上に感光層を設けた感光ドラム９は、−次相電
器１０によって一様に正に帯電され、次いで一次帯電器
１０と逆極１」二の帯電を与える二次帯電器１１により
再帯電されると同時に、霜；力３００Ｗの露光ラング１
２で照射された原画の光像を光学系１３を介して感光層
に与える。この事によって感光ドラム９の表面絶線層上
に光像の明暗のパターンに応じて表面電荷■〒度の差に
よる静電潜像を形成し、次いで、全面露光ラング１４に
よシ感光層の全面を一様に露光する事により、原画像の
明暗に応じて表面電位に差を生ぜしめコントラストの高
い静電潜（８）を形成し、次いで、現像器１５内の現像
スリーブとの摩擦帯電により負極性に帯電されたトナー
により前記ａ像は現像され、可視化される。前記現像プ
ロセスは、特開昭５５−１８６５６号、特開昭５５−１
８６５７号、特開昭５５−１８６７８号、特開昭５５−
１８６７９号夫々に記載の現像方法又は装置に基づくも
のを用い得る。The photosensitive drum 9, which has a photosensitive layer provided on a metal cylinder, is uniformly positively charged by a secondary charger 10, and then re-charged by a secondary charger 11 which provides a charge with a polarity opposite to that of the primary charger 10. At the same time as being charged, frost; exposure rung 1 with a power of 300W
The optical image of the original image irradiated in step 2 is applied to the photosensitive layer via the optical system 13. As a result, an electrostatic latent image is formed on the surface continuous layer of the photosensitive drum 9 according to the light and dark pattern of the light image due to the difference in surface charge. By uniformly exposing the entire surface to light, a difference is created in the surface potential depending on the brightness of the original image, forming an electrostatic latent (8) with high contrast, and then frictional charging with the developing sleeve in the developing device 15. The a-image is developed and visualized by the negatively charged toner. The development process is described in Japanese Patent Application Laid-open No. 55-18656 and Japanese Patent Application Laid-open No. 55-1.
No. 8657, JP-A-55-18678, JP-A-55-
18679, respectively, may be used.
次いでトナー像をカセット１６から供給された紙等のシ
ート１７の裏面に、転写帯電器１８にょシ正帯電を与え
、その静電的吸引力により前記感光ドラム上のｏＪ視像
をシート上に転写し、その転写トナー像を加熱定着装置
のローラ１，２により熱定着する。Next, a transfer charger 18 positively charges the toner image on the back side of a sheet 17 such as paper supplied from the cassette 16, and the OJ visual image on the photosensitive drum is transferred onto the sheet by the electrostatic attraction force. Then, the transferred toner image is thermally fixed by rollers 1 and 2 of a heat fixing device.
転写後のドラム９は、グレードクリーニング手段１９に
よシフリーニングされ再使用される。After the transfer, the drum 9 is cleaned by the grade cleaning means 19 and reused.
第２図は第１図における加熱定着装置の説明図である。FIG. 2 is an explanatory diagram of the heat fixing device in FIG. 1.
１はバロダンヒータ等の二本の加熱用ヒータ３Ｈ，３Ｌ
を内部に有する加熱ローラで、駆動モータ（不図示）か
らの、駆動力を受けて矢示方向に回転する。２は加圧ロ
ーラで、加熱ローラ１に圧接して摺接回転する。1 is two heating heaters 3H and 3L such as Barodan heaters.
The heating roller has a heating roller inside and rotates in the direction of the arrow in response to driving force from a drive motor (not shown). Reference numeral 2 denotes a pressure roller, which is pressed against and rotates in sliding contact with the heating roller 1.
加熱ローラ１は、アルミニウム、ステンレス、鋼等の薄
肉金属製中空ローラ芯１１の外周面に四弗化エチレンｍ
ＩＩＩ （ｐＴｔｒｇ ） 、 ｚ？−フルオロアル
コキシ（ＰＦＡ ）等の面１熱離型性樹脂層ｌ！を２０
〜８０μ厚に設けたものである。The heating roller 1 has a hollow roller core 11 made of a thin metal such as aluminum, stainless steel, or steel, and the outer peripheral surface thereof is coated with tetrafluoroethylene m.
III (pTtrg), z? - Surface 1 heat-releasing resin layer such as fluoroalkoxy (PFA)! 20
It is provided with a thickness of ~80μ.
加圧ローラ２はベアリング（不図示）に回転可能に支持
されている。このローラ２は加熱ローラ１に公知の加圧
手段によって少なくとも定着時に圧接して従動するもの
であり、金Ｍ製ローラ芯２１の外周面に熱加硫（ＨＴＶ
）型シリコンゴムスポンジ層２２を設け、更にその外周
に室温加硫（ＲＴＶ）型シリコンゴム又は低温加硫（Ｌ
ＴＶ）型シリコンゴム、又は熱加硫（ＨＴＶ） ！シリ
コンゴム被悦２３を設けたものよ構成る。The pressure roller 2 is rotatably supported by a bearing (not shown). This roller 2 is driven by being in pressure contact with the heating roller 1 by a known pressure means at least during fixing, and has a heat vulcanization (HTV) roller core 21 made of gold M on the outer peripheral surface.
) type silicone rubber sponge layer 22 is provided, and a room temperature vulcanization (RTV) type silicone rubber or a low temperature vulcanization (L
TV) type silicone rubber or heat vulcanization (HTV)! It is constructed by providing a silicone rubber cover 23.
上記構成は、両ローラの回転に於いて加圧ローラ表層の
シリコンゴム被堕が加圧ローラ表面温度を均一にする役
割を演じ、かつ、下層のシリコンゴムスポンジ層が良好
な断熱材の役目を果たし、加圧ローラ芯金を伝達して逃
げる熱損失を最小限に抑えると共に、加圧ローラの持つ
良好な弾性のために軽圧でニップが確保でき、良好な定
着が保証できるため、加熱ローラ１の芯金１１の薄肉化
が可能となシ、ウェイトタイムを大【１」に短縮するこ
とが可能となるだけでなく、加圧ローラ表層が −ソリ
ッドゴムであって表面性が良好なため、ポーラスなスポ
ンジゴム層と違ってローラがトナーで汚染されにくい利
点がある。加圧ローラ表層がＲＴＶシリコンゴム又は、
ＬＴｖシリコンゴムの場合、ｌＦ！ｆに良好である。In the above configuration, as both rollers rotate, the silicone rubber on the surface layer of the pressure roller plays the role of making the surface temperature of the pressure roller uniform, and the silicone rubber sponge layer of the lower layer plays the role of a good heat insulating material. In addition to minimizing the heat loss that escapes through the pressure roller core metal, the pressure roller's good elasticity allows it to secure a nip with light pressure and ensure good fusing. Not only is it possible to make the core metal 11 of No. 1 thinner, the wait time can be greatly shortened, but also because the surface layer of the pressure roller is made of solid rubber and has good surface properties. Unlike a porous sponge rubber layer, the roller has the advantage of being less likely to be contaminated with toner. The surface layer of the pressure roller is RTV silicone rubber or
In the case of LTv silicone rubber, IF! Good for f.
加熱ロー２１の外周面にはサーミスタ、熱電対等の感温
素子４が接触配設され、それの検出信号を公知の制御手
段（図示せぬ）に祷き、加熱ローラｌの外周面の温度を
（ヒータ３の出力、又は、その印加電圧等を制御するこ
とで）トナー溶融温度に保持する。５１＋５２は定着後
のコピー紙をローラから確実に分離するだめの分離爪で
ある。A temperature sensing element 4 such as a thermistor or thermocouple is disposed in contact with the outer peripheral surface of the heating roller 21, and a detection signal thereof is sent to a known control means (not shown) to control the temperature of the outer peripheral surface of the heating roller l. The toner melting temperature is maintained (by controlling the output of the heater 3 or the applied voltage, etc.). Separation claws 51 and 52 are used to reliably separate the fixed copy paper from the roller.
６は加熱ローラ表面ヘイτｊ着したオフセットトナーや
紙粉等の異物をローラ表…１から除去するだめのクリー
ニング部層であシ、ノーメックス、テフロン（商品名）
咎の劇熱性フェルトより成る。上記耐熱性フェルトに、
ジメチルシリコンオイル、メチルフェニルシリコンオイ
ル等の離型剤を含浸させたものを用いて離型剤塗布部材
を兼ねさせてもよい。７は案内板で、トナー鍛Ｔを担持
したコピー紙Ｐを加熱ローラ１側へ導くように上方へ傾
斜している。6 is a cleaning layer that removes foreign matter such as offset toner and paper powder that has adhered to the surface of the heating roller from the roller surface (1), Nomex, Teflon (product name).
Made of highly sensitive felt. For the above heat-resistant felt,
A material impregnated with a mold release agent such as dimethyl silicone oil or methylphenyl silicone oil may also be used to serve as a mold release agent application member. A guide plate 7 is inclined upward so as to guide the copy paper P carrying the toner particles T toward the heating roller 1 side.
さて、本発明の実施例によれば、上記構成に於イテ、ヒ
ータ３Ｈを高電力ヒータとし、ヒータ３Ｌを低電力ヒー
タとし、ヒータ３Ｈ，３Ｌを以下説明するように作動さ
せる。第３図に示すようＫ、時点ｔｏで′ｔＭ、源をＯ
Ｎしてから、加熱口〜う１の表面温度がトナーを溶融す
るに充分な温度まで上昇する時点ｔ１ （ここでコピー
が可能となシ、不図示のコピー可能表示が点灯する）ま
では、ヒータ３Ｈ及びヒータ３ＬをＯＮ状態に保つ。次
に、コピー可能であるがコピー信号が大刀されずにコピ
ー動作に備えて待機している状態にある時点ｔ１からｔ
２までの間、及びコピー終了時点ｔ３以降は、高知４カ
ヒータ３Ｈは常時ＯＦＦにして低電力ヒータ３Ｌのみで
、加熱ローラ１の表面温度を所定温度に保持するよう制
御する。また、コピー信号が発せられてコピー動作状態
に入った時点ｔ２がらコピー終了時点ｔ３までの間は低
電力ヒータ３Ｌは、常時ＯＦＦにして高電力ヒータ３Ｈ
のみで加熱ローラ表面温度をＢ「定温度に保持するよう
に制御する。こうすることにより非常に高効率で良好な
定着が得られる。Now, according to the embodiment of the present invention, in the above configuration, the heater 3H is a high power heater, the heater 3L is a low power heater, and the heaters 3H and 3L are operated as described below. As shown in Fig. 3, at time tM, the source is
After N, until the time t1 when the surface temperature of the heating port 1 rises to a temperature sufficient to melt the toner (at this point, copying is possible, and a copying enable display (not shown) lights up), Keep heater 3H and heater 3L ON. Next, from time t1 to t when copying is possible but the copy signal is not activated and the copying operation is on standby.
2 and after the copy end time t3, the Kochi 4 heater 3H is always turned off and the surface temperature of the heating roller 1 is controlled to be maintained at a predetermined temperature using only the low power heater 3L. Further, from the time t2 when the copy signal is issued and the copy operation state is entered until the copy end time t3, the low power heater 3L is always turned off and the high power heater 3H is turned off.
The surface temperature of the heating roller is controlled to be maintained at a constant temperature using only B. By doing this, very efficient and good fixing can be obtained.
以下、時点ｔｏから１１までをウェイト時間、時点ｔｌ
からｔ２まで、又は時点ｔ３以降をスタンバイ期間、時
点ｔ２からｔ３−！でをコピー期間と言う。Below, the wait time is from time to to 11, and time tl
to t2 or after time t3 is the standby period, from time t2 to t3-! is called the copy period.
第４図は上記のようにして温度制御を行なった場合の加
熱ローラ表面温度を縦軸に、時間を横軸に示したもので
ある。ｔｏからｔｉでは、両ヒータ３Ｈ，３Ｌが両方共
ＯＮであるため立上シヵープが急であり、大巾にウェイ
ト時間を帰縮することが可能である。次いで、ｔｌから
ｔ２までは高電力ヒータ３ＨはＯＦＦで低電力ヒータ３
Ｌのみで加熱ロ−ラ表面温度制御を行なうために、温度
リップルが非常に少なく、かつ熱損失が少なく機内昇温
等を大ｌ〕に押えることが可能である。次いで、時点ｔ
２でコピーが開始されると、低電力ヒータ３ＬはＯＦＦ
で高電力ヒータ３Ｈのみで温度制御を行なうため、露光
ランプ１２が点灯しても、トータルとして限られた電力
内で機械を作動させることが可能である。次いでｔ３で
コピー動作が終了してスタンバイとなると、再び高電力
ヒータ３ＨはＯＦＦになシ、低電力ヒータ３Ｌのみで、
温度制御を行なう。FIG. 4 shows the heating roller surface temperature on the vertical axis and time on the horizontal axis when the temperature is controlled as described above. From to to ti, since both heaters 3H and 3L are ON, the start-up curve is steep, and it is possible to reduce the wait time to a large extent. Next, from tl to t2, the high power heater 3H is OFF and the low power heater 3H is OFF.
Since the surface temperature of the heating roller is controlled only by L, temperature ripples are very small, heat loss is small, and it is possible to suppress temperature rise in the machine to a large degree. Then, at time t
When copying starts at step 2, low power heater 3L is turned off.
Since the temperature is controlled only by the high-power heater 3H, even if the exposure lamp 12 is turned on, it is possible to operate the machine within a limited total electric power. Next, when the copy operation ends at t3 and the system enters standby, the high power heater 3H is not turned off again, and only the low power heater 3L is activated.
Perform temperature control.
尤も、コピー期間からスタンバイ期間への移行に際して
は、コピー終了時点ｔ３で直ちに高電力ヒータ３ＨをＯ
ＦＦにする代りに第５図に示すように、コピー終了時点
ｔ３から加熱ローラが所定温度Ｔｓに復帰する時点１３
／までは高電力ヒータ３ＨをＯＮにし、その後、＾′曲
カヒータ３ＨをＯＦＦにし低電力ヒータ３Ｌのみで温度
制御を行なうようにしてもよい。However, when transitioning from the copy period to the standby period, the high power heater 3H is turned on immediately at the copy end time t3.
Instead of switching to FF, as shown in FIG. 5, the heating roller returns to the predetermined temperature Ts from the copy end time t3 at a time 13.
The high power heater 3H may be turned on up to /, and then the bending heater 3H may be turned off and temperature control may be performed only with the low power heater 3L.
上記実施例の構成および作動に基づく効果を数値をもっ
て下記に示す。加熱ローラ１は肉厚１６叫のアルミニウ
ム芯金上に３０μ厚のＰＦＡ被覆を施した外径３０＋＋
ｍのローラとし、加圧ローラ２ｔよ外径２０ｍのアルミ
ニウム芯金上にスポンジ硬Ｉｋ（ＡＳＫｇＲＣ） ２５
度、肉Ｉ！ｆ４ ｍｍ （７） ＨＴＶ シリコンゴム
スポンジ被葎を設け、更にその外周にゴム硬度（ＪＩＳ
Ａ） ５０度、肉厚１消のＲＴＶシリコンゴム被憬を設
けたローラとし、高電力ヒータ３Ｈは９００Ｗの八日ダ
ンヒータとし、低電力ヒータ３Ｌは３００Ｗの八日ダン
ヒータとし、加熱ローラ表面温度１８０’Ｃ、エラグ巾
５問、環境温度ｌＯＣ、ローラ周速１６５ ｍｍ ／
ｓｅｃで、Ａ４判２５枚／分のスピードでコピーを行な
った。ウェイト時間は３０秒、またスタンバイ期間の温
度リップルは±０．２５度と非常に小さく、放熱（熱損
失）は５０Ｗであった。Effects based on the configuration and operation of the above embodiment are shown below with numerical values. The heating roller 1 has an outer diameter of 30++ and is made of a 30μ thick PFA coating on an aluminum core metal with a wall thickness of 16mm.
The pressure roller is 2t, and a sponge hard Ik (ASKgRC) 25 is placed on an aluminum core metal with an outer diameter of 20m.
Meat I! f4 mm (7) HTV A silicone rubber sponge cover is provided, and the outer periphery has a rubber hardness (JIS
A) The roller is coated with RTV silicone rubber at 50 degrees and has a wall thickness of 1. The high power heater 3H is a 900W Yokadan heater, the low power heater 3L is a 300W Yokadan heater, and the heating roller surface temperature is 180W. 'C, error width 5 questions, environmental temperature lOC, roller circumferential speed 165 mm /
Copying was performed at a speed of 25 A4 sheets per minute. The wait time was 30 seconds, the temperature ripple during the standby period was very small at ±0.25 degrees, and the heat radiation (heat loss) was 50W.
コピー期間に一時的に加熱ローラは、最大１６度温度降
下したが、定着性は良好であった。また、コピー期間の
消費電力は６００Ｗであった。Although the temperature of the heating roller temporarily dropped by up to 16 degrees during the copying period, the fixing performance was good. Further, power consumption during the copy period was 600W.
これに対し、比較のためスタンバイ期間に高電力ヒータ
３ Ｈで温度制御を行なったところ温度リップルは±０
．７度であシ、熱州失は７０Ｗであって前記実施例の場
合と比較して、機内が温か増え、例えば現像器内および
クリーナ内の温度が１．６度上昇した。また、スタンバ
イ期間に、高電力ヒータ３Ｈ及び低電力ヒータ３Ｌの両
者を同時に用いて温度制御したところ、スタンバイ期間
の温度リップルは±１．０度、熱損失は８５Ｗとなシ、
現像器及びクリーナー内の湿度が前記実施例の場合と比
較して２，２度上昇し、トナーのブロッキング等に不利
な傾向となった。On the other hand, when we controlled the temperature with a high power heater 3H during the standby period for comparison, the temperature ripple was ±0.
．． The temperature was 7 degrees Celsius, and the heat loss was 70 W, so the temperature inside the machine was increased by 1.6 degrees, for example, the temperature inside the developing device and cleaner was increased compared to the case of the above example. In addition, when the temperature was controlled using both the high power heater 3H and the low power heater 3L at the same time during the standby period, the temperature ripple during the standby period was ±1.0 degrees and the heat loss was 85W.
The humidity inside the developing device and the cleaner increased by a few degrees compared to the case of the above embodiment, which tended to be disadvantageous in terms of toner blocking and the like.
以上述べたように、本発明によれば、ウェイト時間の短
縮、電力の節約、良好な定着性、高効率の定着、更には
（・胱内昇顯の低減、（畿内でのトナーのブロッキング
の防止、勢の効果を荀ることができる。As described above, according to the present invention, there is a reduction in waiting time, power saving, good fixing performance, high fixing efficiency, and furthermore, (・reduction of intravesical elevation, (toner blocking in the ridge), You can observe the effects of prevention and force.
第１図は本発明を実施し得る電子写真装置の一例を示す
概擬断面図、第２図は本発明の実施例に係る加熱定着装
置の断面図、第３図は本発明の実施例に係る加熱定着装
置の作動の説明Ｖ１第４図は上記作動に基づく加熱ロー
ラ表面温度の時間的変化を示す図、第５図は本発明の実
施例に係る加熱定着装置の他の作動の説明図である。
■・・・加熱ローラ ２・・・加圧ローラ３Ｈ・・・高
電力ヒータ ３Ｌ・・・低電１カヒータ４・・・感温緊
子 ６・・・クリーニング部材１−７舎１−＋中１一
本 多 小 ’１３−ｐ
第３図
第５図FIG. 1 is a schematic cross-sectional view showing an example of an electrophotographic apparatus in which the present invention can be implemented, FIG. 2 is a cross-sectional view of a heat fixing device according to an embodiment of the present invention, and FIG. Explanation of the operation of the heat fixing device V1 FIG. 4 is a diagram showing temporal changes in the surface temperature of the heating roller based on the above operation, and FIG. 5 is an explanatory diagram of another operation of the heat fixing device according to the embodiment of the present invention. It is. ■...Heating roller 2...Pressure roller 3H...High power heater 3L...Low electric power 1 heater 4...Temperature sensor 6...Cleaning member 1-7 housing 1-+ medium 11 Large Small '13-p Figure 3 Figure 5
Claims (1)
ーラとの間にトナー像を担持したシートを通過させてト
ナー像を該シートに定着させる加熱定着装置において、
加熱ローラに内蔵されたヒータは高電力の第１ヒータと
低電力の第２ヒータとからなシ、ウェイト期間中は両ヒ
ータをオンに保ち、スタンバイ期間中は第１ヒータをオ
フに保って第２ヒータのみの制御により加熱ローラ表面
温度を所定温度に調節し、コピー動作期間中は第２ヒー
タをオフに保って第１ヒータのみの制御によシ加熱ロー
ラ表面温度を所定温度に調節することを特徴とする加熱
定着装置。In a heat fixing device that fixes the toner image on the sheet by passing a sheet carrying a toner image between a heating roller having a built-in heater and a pressure roller that is in pressure contact with the heating roller,
The heater built into the heating roller consists of a high-power first heater and a low-power second heater. During the wait period, both heaters are kept on, and during the standby period, the first heater is kept off and the second heater is turned on. The heating roller surface temperature is adjusted to a predetermined temperature by controlling only the second heater, and the second heater is kept off during the copying operation period, and the heating roller surface temperature is adjusted to the predetermined temperature by controlling only the first heater. A heat fixing device featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19684383A JPS6087377A (en) | 1983-10-20 | 1983-10-20 | Heat fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19684383A JPS6087377A (en) | 1983-10-20 | 1983-10-20 | Heat fixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6087377A true JPS6087377A (en) | 1985-05-17 |
Family
ID=16364581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19684383A Pending JPS6087377A (en) | 1983-10-20 | 1983-10-20 | Heat fixing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6087377A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63100771U (en) * | 1986-12-19 | 1988-06-30 | ||
| EP0564420A2 (en) * | 1992-03-31 | 1993-10-06 | Canon Kabushiki Kaisha | Image heating device capable of controlling activation of plural heaters |
| EP0793150A2 (en) * | 1996-03-01 | 1997-09-03 | Mita Industrial Co. Ltd. | Heat apparatus for use in an image forming apparatus |
| EP0800121A2 (en) * | 1996-04-01 | 1997-10-08 | Xerox Corporation | Fusing apparatus and fuser control method for reducing fuser recovery time from energy-saver mode |
| EP0785487A3 (en) * | 1996-01-17 | 1998-03-25 | Ricoh Company, Ltd | Fixing apparatus for an image forming apparatus |
| US7043185B2 (en) | 2002-05-20 | 2006-05-09 | Ricoh Company, Limited | Fixing apparatus and image forming apparatus for fixing a toner image on a recording medium |
| JP4666329B2 (en) * | 2001-04-05 | 2011-04-06 | 株式会社リコー | Image forming apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52127341A (en) * | 1976-04-19 | 1977-10-25 | Canon Inc | Fixing device for copying machne for electronic photography |
| JPS5811977A (en) * | 1981-07-15 | 1983-01-22 | Fuji Xerox Co Ltd | Controlling method for fixing temperature of electronic copying machine |
| JPS58130368A (en) * | 1982-12-23 | 1983-08-03 | Canon Inc | Heating method of fixing device |
-
1983
- 1983-10-20 JP JP19684383A patent/JPS6087377A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52127341A (en) * | 1976-04-19 | 1977-10-25 | Canon Inc | Fixing device for copying machne for electronic photography |
| JPS5811977A (en) * | 1981-07-15 | 1983-01-22 | Fuji Xerox Co Ltd | Controlling method for fixing temperature of electronic copying machine |
| JPS58130368A (en) * | 1982-12-23 | 1983-08-03 | Canon Inc | Heating method of fixing device |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63100771U (en) * | 1986-12-19 | 1988-06-30 | ||
| EP0564420A2 (en) * | 1992-03-31 | 1993-10-06 | Canon Kabushiki Kaisha | Image heating device capable of controlling activation of plural heaters |
| US5512993A (en) * | 1992-03-31 | 1996-04-30 | Canon Kabushiki Kaisha | Image heating device capable of controlling activation of plural heaters |
| EP0785487A3 (en) * | 1996-01-17 | 1998-03-25 | Ricoh Company, Ltd | Fixing apparatus for an image forming apparatus |
| EP1282015A2 (en) * | 1996-01-17 | 2003-02-05 | Ricoh Company, Ltd. | Fixing apparatus for an image forming apparatus |
| EP1282015A3 (en) * | 1996-01-17 | 2003-03-19 | Ricoh Company, Ltd. | Fixing apparatus for an image forming apparatus |
| EP0793150A2 (en) * | 1996-03-01 | 1997-09-03 | Mita Industrial Co. Ltd. | Heat apparatus for use in an image forming apparatus |
| EP0793150A3 (en) * | 1996-03-01 | 2000-03-29 | Mita Industrial Co. Ltd. | Heat apparatus for use in an image forming apparatus |
| EP0800121A2 (en) * | 1996-04-01 | 1997-10-08 | Xerox Corporation | Fusing apparatus and fuser control method for reducing fuser recovery time from energy-saver mode |
| EP0800121A3 (en) * | 1996-04-01 | 2000-10-11 | Xerox Corporation | Fusing apparatus and fuser control method for reducing fuser recovery time from energy-saver mode |
| JP4666329B2 (en) * | 2001-04-05 | 2011-04-06 | 株式会社リコー | Image forming apparatus |
| US7043185B2 (en) | 2002-05-20 | 2006-05-09 | Ricoh Company, Limited | Fixing apparatus and image forming apparatus for fixing a toner image on a recording medium |
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