JPH07114295A - Image forming device - Google Patents

Image forming device

Info

Publication number
JPH07114295A
JPH07114295A JP5283877A JP28387793A JPH07114295A JP H07114295 A JPH07114295 A JP H07114295A JP 5283877 A JP5283877 A JP 5283877A JP 28387793 A JP28387793 A JP 28387793A JP H07114295 A JPH07114295 A JP H07114295A
Authority
JP
Japan
Prior art keywords
temperature
roller
pressure roller
fixing
image forming
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
JP5283877A
Other languages
Japanese (ja)
Inventor
Motofumi Yokomori
幹詞 横森
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 JP5283877A priority Critical patent/JPH07114295A/en
Publication of JPH07114295A publication Critical patent/JPH07114295A/en
Pending legal-status Critical Current

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  • Fixing For Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE:To obtain an image forming device capable of securing excellent fixation at a first rise-up time in the morning by installing a temperature detecting element on a pressure roller for a fixing device and keeping the temperature of the pressure roller equal to or exceeding a prescribed temperature. CONSTITUTION:The temperature detecting element 10-9 is also installed on the pressure roller 10-4, and the temperature is controlled by transferring information on the temperature of the roller 10-4 to a CPU. When a power is supplied to the device at first, the heater 10-3 starts to be energized so that the temperature of the fixing roller may rise up to a standby temperature. And also, the temperature of the roller 10-4 is detected by the element 10-9, and when the temperature reaches the lower limit of a suitable temperature, a Ready signal is transmitted. Thus, a fixing operation is conducted in a state where a difference between the pressure roller temperature and the fixing roller temperature is comparatively small. At this time, by continuously conducting the operation without stopping heating when the fixing roller temperature reaches the standby temperature, the pressure roller temperature rapidly reaches the lower limit of the suitable temperature, so that it is made possible to transmit the Ready signal, then, a start-up time is shortened.

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、レーザビームプリン
タ、LEDプリンタ、複写機等の画像形成装置に関する
ものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus such as a laser beam printer, an LED printer and a copying machine.

【0002】[0002]

【従来の技術】従来、レーザビームプリンタ、LEDプ
リンタ等の画像形成装置においては、レーザ光等によっ
て画像担持体上に静電潜像を形成し、現像装置によって
潜像を現像し、現像した画像を転写手段により用紙に転
写し、さらに定着装置によって用紙上に定着する方式の
ものが主流となっている。
2. Description of the Related Art Conventionally, in image forming apparatuses such as laser beam printers and LED printers, an electrostatic latent image is formed on an image bearing member by a laser beam or the like, a latent image is developed by a developing device, and the developed image is developed. The mainstream method is one in which an image is transferred to a sheet by a transfer unit and then fixed on the sheet by a fixing device.

【0003】そして、この定着装置としては、熱ローラ
方式のものが一般的である。この方式の定着装置には、
該定着装置のフレームに軸受によって回転可能に保持さ
れ、所定の回転スピードで回転ているアルミニウム製の
定着ローラと、この定着ローラに対向して配置され、加
圧バネによって所定の圧力で当接し、従動回転するゴム
製の加圧ローラとが配設されており、定着装置のフレー
ムに一体的に保持された入口ガイドによって案内した用
紙を、上記定着ローラと加圧ローラで挟持するようにな
っている。
A heat roller type fixing device is generally used as the fixing device. In this type of fixing device,
An aluminum fixing roller, which is rotatably held by a bearing in the frame of the fixing device and is rotating at a predetermined rotation speed, is arranged to face the fixing roller, and abuts at a predetermined pressure by a pressure spring, A rubber pressure roller that is driven to rotate is disposed, and a sheet guided by an entrance guide integrally held by the frame of the fixing device is sandwiched between the fixing roller and the pressure roller. There is.

【0004】また、この挟持した記録材及び画像に熱を
与えるため、上記定着ローラにはヒータ及び温度センサ
が配設されており、図7に示すように所定の温度に保た
れている。先ず、装置へ電源が投入されると、定着ロー
ラ温度TFがスタンバイ温度Tsに達するようにヒータ
への通電が行われ、スタンバイ温度に達したときにRe
ady信号をエンジン部より送出して、定着動作が開始
可能であることを外部機器へ知らせる。そして、Pri
nt信号を受信すると、定着ローラ温度TFが定着温度
Tprとなるようにヒータへの通電を行い、定着温度T
prにて良好な定着動作を行うようになっている。
Further, in order to apply heat to the sandwiched recording material and image, the fixing roller is provided with a heater and a temperature sensor, and is maintained at a predetermined temperature as shown in FIG. First, when the apparatus is powered on, the heater is energized so that the fixing roller temperature T F reaches the standby temperature Ts, and when the standby temperature is reached, Re
An ady signal is sent from the engine section to notify the external device that the fixing operation can be started. And Pri
When the nt signal is received, the heater is energized so that the fixing roller temperature T F becomes the fixing temperature Tpr, and the fixing temperature T F is reached.
A good fixing operation is performed with pr.

【0005】[0005]

【発明が解決しようとする課題】しかしながら、上記従
来例によれば、図7の場合のように、電源投入直後であ
って、Ready信号を送出した直後にPrint信号
を受信した場合には、加圧ローラの温度TPは、定着開
始時には適温Tpoまで上昇しておらず、定着ローラ温
度TFとの差は非常に大きくなっている。また、その後
連続して定着を続けると、加圧ローラ温度TPは用紙に
熱を奪われて急速に低下し、その差は増々大きくなる一
方である。
However, according to the above-described conventional example, when the Print signal is received immediately after the power is turned on and the Ready signal is transmitted, as in the case of FIG. The temperature T P of the pressure roller has not risen to the proper temperature Tpo at the start of fixing, and the difference from the fixing roller temperature T F is very large. Further, when the fixing is continuously continued thereafter, the pressure roller temperature T P is rapidly deprived of heat by the paper, and the difference between them is increasing.

【0006】このように定着ローラと加圧ローラの温度
差が大きくなると、用紙が通常とは逆の、定着ローラの
曲率と逆方向にカールするという問題があった。このよ
うに逆方向にカールすると、用紙が引っかかってジャム
を引き起こしたり、排紙部に適正に積載されない等の問
題が生じる。
As described above, when the temperature difference between the fixing roller and the pressure roller becomes large, there is a problem that the paper curls in the direction opposite to the curvature of the fixing roller, which is the reverse of the normal state. Such curling in the opposite direction causes problems such as paper being caught and causing a jam, and not being properly stacked on the paper discharge unit.

【0007】また、朝一番の立ち上げ時、定着ローラの
熱が温度の低い加圧ローラに奪われるために、充分な定
着性が得られないという問題も生じる。
In addition, since the heat of the fixing roller is taken away by the pressure roller having a low temperature at the first start-up in the morning, there is a problem that sufficient fixing property cannot be obtained.

【0008】本発明は、上記問題点を解決し、用紙のカ
ールが少なく、安定した用紙搬送を行うことができ、朝
一番の立ち上げ時にも充分な定着性を確保できる画像形
成装置を提供することを目的としている。
The present invention solves the above problems, and provides an image forming apparatus capable of stably carrying a sheet with less curl and ensuring sufficient fixing property even at the first start-up in the morning. Is intended.

【0009】[0009]

【課題を解決するための手段】本発明によれば、上記目
的は、所定の画像形成プロセスによって画像を形成する
画像担持体と、該画像担持体上の現像剤像を記録材上に
転写する転写手段と、互いに圧接するように配設された
定着ローラ及び加圧ローラのローラ対と、該定着ローラ
に内包される加熱手段と、該定着ローラの温度を検出す
る定着ローラ用の温度検出素子と、該定着ローラ用の温
度検出素子の検出温度に基づき定着ローラの温度を所定
温度に維持するように設定された温度制御手段とを備え
た画像形成装置において、上記加圧ローラの温度を検出
する加圧ローラ用の温度検出素子と、該加圧ローラ用の
温度検出素子の検出温度に基づき、加圧ローラの温度が
所定の温度に達したときに画像形成動作を開始するよう
に設定された制御手段とを備えたことにより達成され
る。
According to the present invention, the above object is to transfer an image carrier on which an image is formed by a predetermined image forming process and a developer image on the image carrier onto a recording material. A transfer unit, a roller pair of a fixing roller and a pressure roller arranged so as to be in pressure contact with each other, a heating unit included in the fixing roller, and a temperature detecting element for the fixing roller that detects the temperature of the fixing roller. And an image forming apparatus including temperature control means set to maintain the temperature of the fixing roller at a predetermined temperature based on the temperature detected by the temperature detecting element for the fixing roller, the temperature of the pressure roller is detected. Based on the temperature detection element for the pressure roller and the temperature detected by the temperature detection element for the pressure roller, it is set to start the image forming operation when the temperature of the pressure roller reaches a predetermined temperature. Control It is accomplished by providing a stage.

【0010】[0010]

【作用】本発明によれば、装置へ電源が投入されると、
定着ローラが所定の温度に達するまで加熱手段への通電
が行われる。このとき、該定着ローラには加圧ローラが
圧接するように配設されているため、同時に加圧ローラ
の温度も上昇するが、本発明においては、この加圧ロー
ラの温度が所定温度に達した時に、画像形成動作を開始
する。これにより、定着ローラと加圧ローラの温度差は
低減し、カールの発生を抑えて、良好な定着が行われ
る。
According to the present invention, when the device is powered on,
The heating means is energized until the fixing roller reaches a predetermined temperature. At this time, since the pressure roller is arranged in pressure contact with the fixing roller, the temperature of the pressure roller also rises at the same time. However, in the present invention, the temperature of the pressure roller reaches a predetermined temperature. Then, the image forming operation is started. As a result, the temperature difference between the fixing roller and the pressure roller is reduced, curling is suppressed, and good fixing is performed.

【0011】[0011]

【実施例】本発明の実施例1及び実施例2を図面に基づ
いて説明する。
Embodiments 1 and 2 of the present invention will be described with reference to the drawings.

【0012】〈実施例1〉先ず、本発明の実施例1を図
1ないし図4に基づいて説明する。図2は本発明の実施
例1におけるレーザビームプリンタの実施例の本体断面
図を示したものであり、1は記録材たる用紙を複数枚積
載するペーパーカセットである。このペーパーカセット
1に収納された用紙Pは、給紙ローラ2と、分離爪3に
よって所定のタイミングで一枚ずつ分離され、上記ペー
パーカセット1に設けられた用紙ガイド4、及び装置本
体の用紙ガイド5,6によってタイミングローラ7a,
7bに案内される。また、該タイミングローラ7a,7
bの直前に用紙検知センサSが設けられており、これに
よりタイミングローラ7a,7bの回転制御、レーザの
発光タイミング等の制御を行う。
<Embodiment 1> First, Embodiment 1 of the present invention will be described with reference to FIGS. FIG. 2 is a sectional view of the main body of an embodiment of the laser beam printer according to the first embodiment of the present invention, in which 1 is a paper cassette for stacking a plurality of recording sheets. The paper P stored in the paper cassette 1 is separated one by one by the paper feed roller 2 and the separation claw 3 at a predetermined timing, and the paper guide 4 provided in the paper cassette 1 and the paper guide of the apparatus body. The timing rollers 7a,
You will be guided to 7b. In addition, the timing rollers 7a, 7
A sheet detection sensor S is provided immediately before b, and controls the rotation of the timing rollers 7a and 7b and the laser emission timing.

【0013】上記タイミングローラ7a,7bによって
送り出された用紙Pが、画像担持体8と、該画像担持体
8に当接して回転する転写ローラ9との対向部に搬送さ
れると、該転写ローラ9によって画像担持体8上の画像
に所定の電圧が印加され、上記画像を用紙P上に転写す
るようになっている。
When the paper P sent out by the timing rollers 7a and 7b is conveyed to the opposing portion of the image carrier 8 and the transfer roller 9 which is in contact with the image carrier 8 and rotates, the transfer roller is transferred. A predetermined voltage is applied to the image on the image carrier 8 by 9 so that the image is transferred onto the paper P.

【0014】なお、上記画像担持体8を含め、画像のた
めの複数のプロセスユニットはプロセスカートリッジC
として一つの筐体に収納されている。
A plurality of process units for images including the image carrier 8 are process cartridges C.
It is housed in one case as.

【0015】以上のように画像が形成された用紙Pは、
画像担持体8と転写ローラ9に対して上方に配置された
定着装置10に送られる。このとき、用紙Pは定着装置
10の定着フレーム10−5に一体的に取り付けられた
入口ガイド10−2によって案内される。
The sheet P on which the image is formed as described above is
It is sent to the fixing device 10 arranged above the image carrier 8 and the transfer roller 9. At this time, the sheet P is guided by the entrance guide 10-2 integrally attached to the fixing frame 10-5 of the fixing device 10.

【0016】この定着装置10には、ヒータ10−3と
温度センサ(図示せず)を有して所定の温度に加熱され
たアルミニウム製の定着ローラ10−1と、この定着ロ
ーラ10−1と対向して配置され、バネ(図示せず)に
よって一定の圧力で定着ローラ10−1に従動回転自在
に取り付けられたゴム製の加圧ローラ10−4が配設さ
れており、上記用紙Pを挟持搬送するようになってい
る。
The fixing device 10 has a heater 10-3 and a temperature sensor (not shown) and is made of aluminum and is heated to a predetermined temperature. The fixing roller 10-1 is made of aluminum and the fixing roller 10-1. A rubber pressure roller 10-4, which is disposed so as to face each other and is rotatably driven by a fixing roller 10-1 with a constant pressure by a spring (not shown), is disposed. It is designed to be nipped and conveyed.

【0017】したがって、上記用紙P上の画像は、熱及
び圧力を受けて定着され、定着された用紙Pは定着ロー
ラ下流に設けられた分離爪10−6によって定着ローラ
10−1から分離され、その後排紙下ガイド11及び排
紙上ガイド12によって排紙ローラ部13へ案内され用
紙積載部に積載される。
Therefore, the image on the paper P is fixed by receiving heat and pressure, and the fixed paper P is separated from the fixing roller 10-1 by the separating claw 10-6 provided downstream of the fixing roller. After that, the paper is guided to the paper discharge roller unit 13 by the paper discharge lower guide 11 and the paper discharge upper guide 12 and is stacked on the paper stacking unit.

【0018】以上のように、本実施例装置の定着ローラ
10−1は、ヒータ10−3と温度センサ(図示せず)
により所定の温度に加熱されているが、本実施例装置に
おいては、図1に示すように、加圧ローラ10−4にも
温度検出素子10−9を設け、加圧ローラ10−4の温
度情報をCPU(図示せず)に送ることにより、温度制
御を行っている。
As described above, the fixing roller 10-1 of the apparatus of this embodiment has the heater 10-3 and the temperature sensor (not shown).
Although the temperature of the pressure roller 10-4 is increased by the temperature detecting element 10-9, the pressure roller 10-4 is also provided with a temperature detecting element 10-9 as shown in FIG. The temperature is controlled by sending information to the CPU (not shown).

【0019】以下、本実施例の温度制御を図3のフロー
チャート及び図4の定着ローラTFと加圧ローラ温度TP
の変化図に基づいて説明する。先ず、装置に電源が投入
されると、ヒータ10−3への通電を開始し、定着ロー
ラ温度TFをスタンバイ温度Tsへと上昇させる。従来
は、定着ローラ温度TFをスタンバイ温度Tsに達した
ときにReady信号を送出していたが、本発明ではこ
れを行わず、温度検出素子10−9により加圧ローラ1
0−4の温度TPの検出を行う。そして、この温度が適
温下限Tpoに達した時点でReady信号を送出す
る。これにより、加圧ローラ温度TPと定着ローラ温度
Fの差が比較的少ない状態で定着動作を行うことがで
きる。
The temperature control of this embodiment will be described below with reference to the flowchart of FIG. 3 and the fixing roller T F and pressure roller temperature T P of FIG.
A description will be given based on the change diagram. First, when the apparatus is powered on, the heater 10-3 is energized to raise the fixing roller temperature T F to the standby temperature Ts. Conventionally, the Ready signal was sent when the fixing roller temperature T F reached the standby temperature Ts, but this is not done in the present invention, and the temperature detection element 10-9 causes the pressure roller 1 to operate.
The temperature T P of 0-4 is detected. Then, when this temperature reaches the optimum temperature lower limit Tpo, the Ready signal is transmitted. As a result, the fixing operation can be performed in a state where the difference between the pressure roller temperature T P and the fixing roller temperature T F is relatively small.

【0020】ここで定着ローラ温度TFがスタンバイ温
度Tsに達したときに、加熱を停止せずに続行すると、
より速く加圧ローラ温度TPが適温下限Tpoに達し、
Ready信号を送出することが可能となり、起動時間
の短縮が図れる。
When the fixing roller temperature T F reaches the standby temperature Ts, if heating is continued without stopping,
The pressure roller temperature T P reaches the optimum temperature lower limit Tpo more quickly,
It becomes possible to send a Ready signal, and the start-up time can be shortened.

【0021】また、その後、連続して定着を続けると、
加圧ローラ温度TPは用紙Pに熱を奪われ徐々に低下し
てくる。そのため、加圧ローラ温度TPが適温下限Tp
oより所定量α下がった場合、Wait信号を送出し、
画像形成を一時中断する。そして、再び加圧ローラ温度
Pが温度Tpoに達すると、Ready信号を送出し
てプリントを再開する。
After that, when fixing is continuously continued,
The pressure roller temperature T P is gradually reduced due to the heat absorbed by the paper P. Therefore, the pressure roller temperature T P is the optimum temperature lower limit Tp.
Wait signal is sent out when a predetermined amount α is lower than o,
Image formation is suspended. Then, when the pressure roller temperature T P reaches the temperature Tpo again, the Ready signal is sent to restart printing.

【0022】このように画像形成の間隔を延ばし加圧ロ
ーラ温度TPを所定の温度以上に保つことにより、定着
ローラと加圧ローラの温度差を少なくすることができ
る。
By thus extending the image forming interval and maintaining the pressure roller temperature T P at a predetermined temperature or higher, the temperature difference between the fixing roller and the pressure roller can be reduced.

【0023】〈実施例2〉次に、本発明の実施例2を図
5及び図6に基づいて説明する。なお、実施例1との共
通箇所には同一符号を付して説明を省略する。
<Second Embodiment> Next, a second embodiment of the present invention will be described with reference to FIGS. The same parts as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

【0024】本実施例においては、実施例1と同様に、
定着ローラ温度TFがスタンバイ温度Tsに達しても、
加圧ローラ温度TPが適温下限Tpoに達するまでの
間、Ready信号を送出しないが、さらに、定着ロー
ラ温度TFがスタンバイ温度Tsに達した後、加圧ロー
ラ温度TPが適温下限Tpoに達するまでの間、加圧ロ
ーラを回転させる。
In this embodiment, as in the first embodiment,
Even if the fixing roller temperature T F reaches the standby temperature Ts,
The Ready signal is not sent until the pressure roller temperature T P reaches the optimum temperature lower limit Tpo, but after the fixing roller temperature T F reaches the standby temperature Ts, the pressure roller temperature T P becomes the optimum temperature lower limit Tpo. The pressure roller is rotated until it is reached.

【0025】これにより、加圧ローラがより速く周方向
に均一に加熱され、定着ローラと加圧ローラの温度差を
少なくすることができる。
As a result, the pressure roller is heated more quickly and uniformly in the circumferential direction, and the temperature difference between the fixing roller and the pressure roller can be reduced.

【0026】また、図6に示すように、実施例1と同様
に加圧ローラ温度TPが適温下限Tpo以下になると一
時停止させるが、本実施例においては、その間にも加圧
ローラを回転させることにより、加圧ローラがより速く
周方向に均一に加熱される利点が得られる。
Further, as shown in FIG. 6, when the pressure roller temperature T P becomes equal to or lower than the optimum temperature lower limit Tpo as in the case of the first embodiment, the pressure roller is temporarily stopped. By doing so, it is possible to obtain the advantage that the pressure roller is heated more quickly and uniformly in the circumferential direction.

【0027】[0027]

【発明の効果】以上説明したように本発明によれば、定
着装置の加圧ローラに温度検出素子を設け、加圧ローラ
温度を所定の温度以上に保ち、定着ローラとの温度差を
減らすことにより、定着ローラの熱容量を小さくするこ
となく、また、ヒータの発熱量を大きくすることなく、
記録材のカールが少なく安定した記録材搬送を行え、朝
一番の立ち上げ時にも充分な定着性を確保できる画像形
成装置を提供することができる。
As described above, according to the present invention, the temperature detecting element is provided in the pressure roller of the fixing device to keep the temperature of the pressure roller at a predetermined temperature or higher, thereby reducing the temperature difference from the fixing roller. Therefore, without reducing the heat capacity of the fixing roller and increasing the heat generation amount of the heater,
It is possible to provide an image forming apparatus capable of stably conveying a recording material with little curling of the recording material and ensuring sufficient fixing property even at the first start-up in the morning.

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

【図1】本発明の実施例1における定着装置周辺を示す
断面図である。
FIG. 1 is a cross-sectional view illustrating the periphery of a fixing device according to a first exemplary embodiment of the present invention.

【図2】図1装置が用いられる画像形成装置の断面図で
ある。
FIG. 2 is a sectional view of an image forming apparatus in which the apparatus of FIG. 1 is used.

【図3】図1装置の動作の流れを示すフローチャートで
ある。
FIG. 3 is a flowchart showing a flow of operations of the apparatus shown in FIG.

【図4】図1装置の定着ローラと加圧ローラの温度の変
化を示す図である。
FIG. 4 is a diagram showing changes in temperatures of a fixing roller and a pressure roller of the apparatus shown in FIG.

【図5】本発明の実施例2における定着動作開始までの
動作の流れを示すフローチャートである。
FIG. 5 is a flowchart showing the flow of operations up to the start of fixing operation in Embodiment 2 of the present invention.

【図6】本発明の実施例2における定着動作開始からの
動作の流れを示すフローチャートである。
FIG. 6 is a flowchart showing an operation flow from the start of fixing operation in Embodiment 2 of the present invention.

【図7】従来の定着装置における定着ローラと加圧ロー
ラの温度の変化を示す図である。
FIG. 7 is a diagram showing changes in temperature of a fixing roller and a pressure roller in a conventional fixing device.

【符号の説明】[Explanation of symbols]

8 画像担持体 9 転写ローラ(転写手段) 10 定着装置 10−1 定着ローラ 10−3 ヒータ(加熱手段) 10−4 加圧ローラ 10−9 加圧ローラ用の温度検出素子 8 image carrier 9 transfer roller (transfer means) 10 fixing device 10-1 fixing roller 10-3 heater (heating means) 10-4 pressure roller 10-9 temperature detection element for pressure roller

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 所定の画像形成プロセスによって画像を
形成する画像担持体と、該画像担持体上の現像剤像を記
録材上に転写する転写手段と、互いに圧接するように配
設された定着ローラ及び加圧ローラのローラ対と、該定
着ローラに内包される加熱手段と、該定着ローラの温度
を検出する定着ローラ用の温度検出素子と、該定着ロー
ラ用の温度検出素子の検出温度に基づき定着ローラの温
度を所定温度に維持するように設定された温度制御手段
とを備えた画像形成装置において、上記加圧ローラの温
度を検出する加圧ローラ用の温度検出素子と、該加圧ロ
ーラ用の温度検出素子の検出温度に基づき、加圧ローラ
の温度が所定の温度に達したときに画像形成動作を開始
するように設定された制御手段とを備えたことを特徴と
する画像形成装置。
1. An image carrier for forming an image by a predetermined image forming process, a transfer unit for transferring a developer image on the image carrier onto a recording material, and a fixing unit arranged in pressure contact with each other. A roller pair of a roller and a pressure roller; heating means included in the fixing roller; a temperature detecting element for the fixing roller for detecting the temperature of the fixing roller; and a temperature detected by the temperature detecting element for the fixing roller. An image forming apparatus having a temperature control unit set to maintain the temperature of the fixing roller at a predetermined temperature based on the temperature detecting element for the pressure roller, which detects the temperature of the pressure roller, and the pressure detecting element. An image forming device, comprising: a control unit set to start an image forming operation when the temperature of the pressure roller reaches a predetermined temperature based on the temperature detected by the temperature detecting element for the roller. apparatus.
【請求項2】 制御手段は、温度検出素子による加圧ロ
ーラの検出温度に基づき、画像形成動作の一時停止及び
再開を行うように設定されていることとする請求項1に
記載の画像形成装置。
2. The image forming apparatus according to claim 1, wherein the control unit is set to temporarily stop and restart the image forming operation based on the temperature detected by the temperature detection element of the pressure roller. .
【請求項3】 制御手段は、温度検出素子による加圧ロ
ーラの検出温度が所定温度に達するまでの間、加圧ロー
ラを回転させるように設定されていることとする請求項
1に記載の画像形成装置。
3. The image according to claim 1, wherein the control means is set to rotate the pressure roller until the temperature detected by the temperature detection element of the pressure roller reaches a predetermined temperature. Forming equipment.
JP5283877A 1993-10-19 1993-10-19 Image forming device Pending JPH07114295A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5283877A JPH07114295A (en) 1993-10-19 1993-10-19 Image forming device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5283877A JPH07114295A (en) 1993-10-19 1993-10-19 Image forming device

Publications (1)

Publication Number Publication Date
JPH07114295A true JPH07114295A (en) 1995-05-02

Family

ID=17671339

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5283877A Pending JPH07114295A (en) 1993-10-19 1993-10-19 Image forming device

Country Status (1)

Country Link
JP (1) JPH07114295A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7130553B2 (en) 2002-12-26 2006-10-31 Canon Kabushiki Kaisha Heating apparatus with conveyance interval controller and control of electric power in conformity with detected temperature
JP2009109911A (en) * 2007-10-31 2009-05-21 Ricoh Co Ltd Image forming device and image forming method
JP2011118281A (en) * 2009-12-07 2011-06-16 Sharp Corp Fixing device, image forming apparatus, program and recording medium
JP2016090701A (en) * 2014-10-31 2016-05-23 株式会社リコー Fixing device and image forming apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7130553B2 (en) 2002-12-26 2006-10-31 Canon Kabushiki Kaisha Heating apparatus with conveyance interval controller and control of electric power in conformity with detected temperature
JP2009109911A (en) * 2007-10-31 2009-05-21 Ricoh Co Ltd Image forming device and image forming method
JP2011118281A (en) * 2009-12-07 2011-06-16 Sharp Corp Fixing device, image forming apparatus, program and recording medium
JP2016090701A (en) * 2014-10-31 2016-05-23 株式会社リコー Fixing device and image forming apparatus

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