JPS6050566A - Electrophotographic copying device - Google Patents

Electrophotographic copying device

Info

Publication number
JPS6050566A
JPS6050566A JP58157971A JP15797183A JPS6050566A JP S6050566 A JPS6050566 A JP S6050566A JP 58157971 A JP58157971 A JP 58157971A JP 15797183 A JP15797183 A JP 15797183A JP S6050566 A JPS6050566 A JP S6050566A
Authority
JP
Japan
Prior art keywords
paper jam
temperature
control circuit
power saving
signal
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
JP58157971A
Other languages
Japanese (ja)
Inventor
Shinichi Iwasaki
岩崎 信一
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 JP58157971A priority Critical patent/JPS6050566A/en
Publication of JPS6050566A publication Critical patent/JPS6050566A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00Apparatus for electrographic processes using a charge pattern
    • G03G15/20Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
    • G03G15/2003Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fixing For Electrophotography (AREA)
  • Paper Feeding For Electrophotography (AREA)

Abstract

PURPOSE:To prevent trouble such as ignition, etc., and to shorten a waiting time for restart by controlling a heat roller fixing device to a lower temperature than a regular fixing temperature never to cut off a heat source when a paper jam is generated. CONSTITUTION:When a paper jam detecting circuit 33 detects the paper jam, a paper jam generating display is executed on an operating panel 32 by a paper jam generating signal (d), and also a paper jam state signal (e) is outputted to a power saving control circuit 36. The control circuit 36 outputs a power saving state signal (c) to a temperature control circuit 35, and by a temperature control signal (f), a fixing device 34 is temperature controlled so as to obtain the temperature lower than a regular fixing temperature by about 25 deg.C. Accordingly, when processing the paper jam, the trouble such as smoking, ignition, etc. are eliminated, and also since the heat source is not cut off, a re-waiting time for restart can be shortened.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、熱ロール定着装置の温度を紙詰り発生時に
低く温度制御するようにした電子写真複写装置に関する
ものである。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electrophotographic copying apparatus in which the temperature of a heat roll fixing device is controlled to be low when a paper jam occurs.

〔従来技術とその問題点〕[Prior art and its problems]

従来、複写装置等の装置内部に詰まった紙、特に定着装
置付近に詰まった紙は、熱源の電源がOFFされないま
ま、コピー中または通常スタンバイ中と同じ定着温調温
度で定着装置を制御している場合には、熱源によって発
煙したり発火するおそれがあった。これを防止するため
紙詰り発生時には、熱ロール定着装置の熱源への通電を
切るようにしているが、この場合には紙詰り処理後定着
装置温度低下のために再待ち時間が長くなるという欠点
があった。
Conventionally, paper jammed inside devices such as copying machines, especially paper jammed near the fixing device, is handled by controlling the fixing device at the same fixing temperature as during copying or normal standby without turning off the heat source. There was a risk of smoke or ignition caused by the heat source. To prevent this, when a paper jam occurs, the power to the heat source of the heat roll fixing device is cut off, but in this case, the disadvantage is that the temperature of the fixing device drops after the paper jam has been cleared, resulting in a longer waiting time. was there.

〔発明の目的〕[Purpose of the invention]

この発明は、上記の点にかんがみなされたもので、紙詰
り発生時の熱ロール定着器の熱ローラ表面温度を通常温
度よりも低く保つように制御する電子写真複写装置を提
供することを目的とする。
The present invention has been made in consideration of the above points, and an object of the present invention is to provide an electrophotographic copying apparatus that controls the surface temperature of the heat roller of a heat roll fixing device to be kept lower than the normal temperature when a paper jam occurs. do.

〔実施例〕〔Example〕

上記の目的を達成するため、この発明は紙詰りを表示す
る手段と、紙詰り発生時に熱ローラ定着器を通常の定着
温度よりも低温度に制御する節電制御回路を設け、紙詰
り発生時にも熱源を断にしないようにしたものである。
In order to achieve the above object, the present invention includes a means for indicating a paper jam and a power saving control circuit that controls the heat roller fixing device to a temperature lower than the normal fixing temperature when a paper jam occurs. This is to ensure that the heat source is not cut off.

以下この発明を図面により説明する。This invention will be explained below with reference to the drawings.

第1図はこの発明を適用した複写装置の断面図である。FIG. 1 is a sectional view of a copying apparatus to which the present invention is applied.

以下、構造および動作について説明する。The structure and operation will be explained below.

原21:6台ガラス1Lに置かれた原稿(図示せず)は
、第1走査ミラー2と一体に構成された照明ランプ3で
照明され、その反射光は、第1走査ミラー2および第2
走査ミラー4で走査される。第1走査ミラー2と第2走
査ミラー4は1 : l/2の速比駆動<ことによりズ
ームレンズ5の前方の光路長が常に一定に保たれたまま
原稿の走査が行われる。6は感光ドラムで図示しないモ
ータ番とよって矢印方向に回転する。
Original 21:6 An original (not shown) placed on the glass 1L is illuminated by an illumination lamp 3 that is integrated with the first scanning mirror 2, and the reflected light is transmitted to the first scanning mirror 2 and the second scanning mirror 2.
It is scanned by a scanning mirror 4. The first scanning mirror 2 and the second scanning mirror 4 are driven at a speed ratio of 1:1/2. Therefore, the original is scanned while the optical path length in front of the zoom lens 5 is always kept constant. Reference numeral 6 denotes a photosensitive drum which is rotated in the direction of the arrow by a motor number not shown.

上記の反射光像はズームレンズ5、第3ミラー7を経た
後、露光部で感光ドラム6上に結像する。なお、8はブ
ランク露光ランプである。
After passing through the zoom lens 5 and the third mirror 7, the reflected light image is formed on the photosensitive drum 6 at the exposure section. Note that 8 is a blank exposure lamp.

感光ドラム6は、−成帯電器9によって均一に帯電され
ており、その上に画像露光によって静電潜像が形成され
る。感光ドラム6上の静電潜像は、次に現像器10の現
像ローラ11により現像され、トナー像として可視化さ
れ、トナー像は転写帯電器12により転写紙に転写され
る。カセット13内の転写紙は、給紙ローラ14により
機内に送られ、レジスタローラ15で正確なタイミング
をとって、感光ドラム6方向の送られる。このとき潜像
先端と転写紙の先端とを転写部で一致させる。転写部に
おいて、転写紙の背後から転写帯電器12によってコロ
ナ放電を行い、トナーを転写紙に静電的に転写する。次
いで、交流コロナまたは転写帯電器12とは逆極性から
なる分離帯電器16により、転写紙背面上の電荷を中和
して、転写紙を感光ドラム6から分離し、搬送ベルト1
8に載せて搬送する。転写紙が分離した後の感光ドラム
6はクリーナ前除電器17によって除電され、その後感
光ドラム6上に残留している未転写のトナーはクリーナ
19によって感光ドラム6表面から除去される。一方、
転写紙は定着器2゜を通過し、その上にトナー像は永久
的に定着させられる。なお、21は定着用ローラであり
、22は温度センサーである。
The photosensitive drum 6 is uniformly charged by a negative charger 9, and an electrostatic latent image is formed thereon by image exposure. The electrostatic latent image on the photosensitive drum 6 is then developed by a developing roller 11 of a developing device 10 and visualized as a toner image, and the toner image is transferred to a transfer paper by a transfer charger 12. The transfer paper in the cassette 13 is fed into the machine by a paper feed roller 14, and is fed in the direction of the photosensitive drum 6 by a register roller 15 with accurate timing. At this time, the leading edge of the latent image and the leading edge of the transfer paper are aligned at the transfer section. In the transfer section, a transfer charger 12 performs corona discharge from behind the transfer paper to electrostatically transfer the toner onto the transfer paper. Next, an AC corona or a separation charger 16 having a polarity opposite to that of the transfer charger 12 neutralizes the electric charge on the back surface of the transfer paper, and separates the transfer paper from the photosensitive drum 6.
8 and transported. After the transfer paper has been separated, the photosensitive drum 6 is neutralized by a pre-cleaner static eliminator 17, and then untransferred toner remaining on the photosensitive drum 6 is removed from the surface of the photosensitive drum 6 by a cleaner 19. on the other hand,
The transfer paper passes through a fuser 2° and the toner image is permanently fixed thereon. Note that 21 is a fixing roller, and 22 is a temperature sensor.

第2図はこの発明の一実施例の概略構成を示すブロック
図である。この図で、31は節電スイッチで、タイマと
共に複写終了後に装置の節電を図るだめのスイッチであ
る。32はシステムの状態を示す操作パネル、33は紙
詰り検出回路、34は熱源を有する定着器、35は前記
定着器34の温度を制御する温調制御回路、36は前記
紙詰り検出回路33で検出した紙詰りにより温調制御回
路35に定着器34の節電指令を出力する節電制御回路
であり、aは前記節電スイッチ31のON・OFF信号
、bは前記節電制御回路36が出力する操作パネル32
の電源OFF信号、Cは同じく節電制御回路36が出力
する節電状態信号、dは前記紙詰り発生を操作パネル3
2に表示する紙詰り発生信号、eは前記紙詰り発生回路
33が節電制御回路36に出力する紙詰り状態信号、f
は前記温調制御回路35が出力する温調制御信号である
。以下、動作について説明する。
FIG. 2 is a block diagram showing a schematic configuration of an embodiment of the present invention. In this figure, 31 is a power saving switch which, together with a timer, is used to save power in the apparatus after copying is completed. Reference numeral 32 indicates an operation panel that indicates the status of the system, 33 indicates a paper jam detection circuit, 34 indicates a fixing device having a heat source, 35 indicates a temperature control circuit that controls the temperature of the fixing device 34, and 36 indicates the paper jam detection circuit 33. This is a power-saving control circuit that outputs a power-saving command for the fixing device 34 to the temperature control control circuit 35 based on a detected paper jam, where a indicates an ON/OFF signal for the power-saving switch 31, and b indicates an operation panel to which the power-saving control circuit 36 outputs. 32
, C is the power saving state signal outputted by the power saving control circuit 36, and d is the power saving state signal outputted from the operation panel 3 when the paper jam occurs.
2 is a paper jam occurrence signal, e is a paper jam state signal outputted from the paper jam generation circuit 33 to the power saving control circuit 36, f is
is a temperature control signal outputted from the temperature control circuit 35. The operation will be explained below.

節電スイッチ31がONの時ON・OFF信号信号“’
HIGH”となり、このとき節電制御回路36からは操
作パネル32に電源OFF信号すと節電状態信号Cを出
力し、この節電状態信号Cにより温調制御回路35は定
着器34を節電温度に温調する。ここでは、定着器34
の定着ローラ表面温度を接触型サーミスタにて温度検知
して、節電状態では定着ローラ表面温度を約160℃、
fM電状態以外は約185°Cを保つように温調制御回
路35で定着器34の定着ローラ表面温度を制御する。
ON/OFF signal "' when power saving switch 31 is ON
At this time, the power saving control circuit 36 sends a power OFF signal to the operation panel 32 and outputs a power saving state signal C. Based on this power saving state signal C, the temperature control circuit 35 adjusts the temperature of the fuser 34 to the power saving temperature. Here, the fixing device 34
The surface temperature of the fixing roller is detected by a contact type thermistor, and in the power saving state, the fixing roller surface temperature is approximately 160℃,
The temperature control circuit 35 controls the surface temperature of the fixing roller of the fixing device 34 so as to maintain the temperature at about 185° C. except in the fM power state.

次に紙詰り発生時の制御について述べる。Next, we will discuss control when a paper jam occurs.

紙詰り検出回路33が紙詰りを検知した時、紙詰り発生
信号dにより操作パネル32上に紙詰り発生表示を行い
、これと同時に定着器34を節電状態にするための紙詰
り状態信号eを出力する。
When the paper jam detection circuit 33 detects a paper jam, a paper jam occurrence signal d is used to display a paper jam occurrence indication on the operation panel 32, and at the same time, a paper jam status signal e is sent to put the fixing unit 34 into a power saving state. Output.

ここで、紙詰り検知は本体所定個所に設けた各部の紙詰
リセンサ(図示せず)により行われ、紙詰り発生信号d
の発生と同時に本体の駆動が停止する。また5節電制御
回路36は節電状態信号Cだけを温調制御回路35に出
力し、温調制御信号fにより定着器34は節電状態とな
り、通常状態より約25℃低く温調される。なお、節電
状態信号Cだけを出力したのは、節電制御回路36が操
作パネル32にOFF信号すを出力してしまうと、温調
発生状態を把握できなくなるのを防止するためである。
Here, paper jam detection is performed by paper jam resensors (not shown) in each part provided at predetermined locations in the main body, and a paper jam occurrence signal d
The drive of the main body stops at the same time as this occurs. Further, the power saving control circuit 36 outputs only the power saving state signal C to the temperature control circuit 35, and the fixing device 34 is put into the power saving state by the temperature control signal f, and the temperature is adjusted to be about 25° C. lower than the normal state. Note that the reason why only the power saving state signal C is outputted is to prevent the power saving control circuit 36 from outputting the OFF signal to the operation panel 32 from becoming unable to grasp the temperature control occurrence state.

〔発明の効果〕〔Effect of the invention〕

以上説明したように、この発明は紙詰り発生を表示する
とともに、オペレータが紙詰り発生を認識してから紙詰
り処理を終了するまで、定着器の熱源温度を通常温度よ
りも低く保ち、紙詰りによるトラブルを防止し、また、
紙詰り処理後の再スタート時までの再待ち時間を短縮で
きるので、効率のよい操作ができる等の利点を有する。
As described above, the present invention not only displays the occurrence of a paper jam, but also maintains the heat source temperature of the fuser lower than the normal temperature from the time the operator recognizes the occurrence of the paper jam until the paper jam clearing process is completed. To prevent trouble caused by
Since the waiting time until the restart after clearing a paper jam can be shortened, there are advantages such as efficient operation.

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

第1図はこの発明を適用した複写装置の断面図、第2図
はこの発明の一実施例の概略構成を示すブロック図であ
る。 図中、31は節電スイッチ、32は操作パネル、33は
紙詰り検出回路、34は定着器、35は温調制御回路、
36は節電制御回路、aは0N−OFF信号、bは電源
OFF信号、Cは節電状態信号、dは紙詰り発生信号、
eは紙詰り状態信号、fは温調制御信号である。
FIG. 1 is a sectional view of a copying apparatus to which the present invention is applied, and FIG. 2 is a block diagram showing a schematic configuration of an embodiment of the present invention. In the figure, 31 is a power saving switch, 32 is an operation panel, 33 is a paper jam detection circuit, 34 is a fixing device, 35 is a temperature control circuit,
36 is a power saving control circuit, a is an ON-OFF signal, b is a power OFF signal, C is a power saving state signal, d is a paper jam occurrence signal,
e is a paper jam state signal, and f is a temperature control signal.

Claims (1)

【特許請求の範囲】[Claims] 熱ローラ定着器の温度を制御する電子写真複写装置にお
いて、前記電子写真複写装置に給紙された紙の紙詰り発
生を表示する手段と、紙詰り発生時に前記熱ローラ定着
器を通常の定着温度よりも低温に制御する節電制御回路
とを具備したことを特徴とする電子写真複写装置。
In an electrophotographic copying apparatus that controls the temperature of a heat roller fixing device, means for displaying the occurrence of a paper jam of paper fed to the electrophotographic copying device; An electrophotographic copying apparatus characterized by comprising a power saving control circuit that controls the temperature to a lower temperature than that of the electrophotographic copying apparatus.
JP58157971A 1983-08-31 1983-08-31 Electrophotographic copying device Pending JPS6050566A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58157971A JPS6050566A (en) 1983-08-31 1983-08-31 Electrophotographic copying device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58157971A JPS6050566A (en) 1983-08-31 1983-08-31 Electrophotographic copying device

Publications (1)

Publication Number Publication Date
JPS6050566A true JPS6050566A (en) 1985-03-20

Family

ID=15661433

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58157971A Pending JPS6050566A (en) 1983-08-31 1983-08-31 Electrophotographic copying device

Country Status (1)

Country Link
JP (1) JPS6050566A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61275784A (en) * 1985-05-30 1986-12-05 Mita Ind Co Ltd Temperature controlling method for fixing device
JPS63157182A (en) * 1986-12-19 1988-06-30 Sanyo Electric Co Ltd Image forming device
JPS63208891A (en) * 1987-02-25 1988-08-30 Canon Inc Recorder
EP0878749A2 (en) * 1997-05-14 1998-11-18 Canon Kabushiki Kaisha Image heating apparatus
US7088934B2 (en) * 2003-07-10 2006-08-08 Samsung Electronics Co., Ltd. Fusing system and temperature control method thereof for use in an image forming apparatus

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61275784A (en) * 1985-05-30 1986-12-05 Mita Ind Co Ltd Temperature controlling method for fixing device
JPS63157182A (en) * 1986-12-19 1988-06-30 Sanyo Electric Co Ltd Image forming device
JPS63208891A (en) * 1987-02-25 1988-08-30 Canon Inc Recorder
EP0878749A2 (en) * 1997-05-14 1998-11-18 Canon Kabushiki Kaisha Image heating apparatus
EP0878749A3 (en) * 1997-05-14 1999-10-20 Canon Kabushiki Kaisha Image heating apparatus
US6040558A (en) * 1997-05-14 2000-03-21 Canon Kabushiki Kaisha Image heating apparatus
US7088934B2 (en) * 2003-07-10 2006-08-08 Samsung Electronics Co., Ltd. Fusing system and temperature control method thereof for use in an image forming apparatus

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