JPH0876657A - Image forming device - Google Patents

Image forming device

Info

Publication number
JPH0876657A
JPH0876657A JP6208290A JP20829094A JPH0876657A JP H0876657 A JPH0876657 A JP H0876657A JP 6208290 A JP6208290 A JP 6208290A JP 20829094 A JP20829094 A JP 20829094A JP H0876657 A JPH0876657 A JP H0876657A
Authority
JP
Japan
Prior art keywords
image forming
ozone
forming apparatus
fan
photoconductor
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
JP6208290A
Other languages
Japanese (ja)
Inventor
Seiichi Shigeta
誠一 繁田
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP6208290A priority Critical patent/JPH0876657A/en
Publication of JPH0876657A publication Critical patent/JPH0876657A/en
Pending legal-status Critical Current

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  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE: To provide an image forming device where ozone saturation concentration is lowered by avoiding the excess specification of an ozone filter by decreasing the revolving speed of a fan exhausting ozone in accordance with consecutively operating time or the number of consecutively copied sheets in accordance with an actually used condition, and whose cost is reduced. CONSTITUTION: This image forming device 1 is provided with a photoreceptor 2, an electrifying device 3 electrifying the photoreceptor 2, a developing device 4, a transfer device 5, a cleaning device 6 for the photoreceptor 2, a fixing device 7, and the fan 9 having the ozone filter 8 arranged in the vicinity of the fixing device 7 and exhausting air in the device 1 so that the inside of the device 1 may be cooled. It is provided with a controller 11 which decreases the revolving speed of the fan 9 in accordance with the consecutively operating time or the number of consecutively copied sheets performed once.

Description

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

【0001】[0001]

【産業上の利用分野】この発明は、画像形成装置特に低
CPMパーソナル用画像形成装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus, particularly a low CPM personal image forming apparatus.

【0002】[0002]

【従来の技術】従来、1分間当りのコピー枚数が10〜15
枚程度と少ないいわゆる低CPMパーソナル用画像形成
装置1には、図3に示すように感光体2と、感光体2に
帯電させる帯電装置3と、感光体2に担持された潜像を
現像する現像装置4と、現像された像を転写紙に転写す
る転写装置5と、転写後感光体2に残留したトナーを除
去するクリーニング装置6と、転写紙に転写されたトナ
ー像を熱定着する定着装置7とを具えるとともに、フィ
ルター8を有し低CPMパーソナル用画像形成装置1内
の空気を排出するファン9を定着装置7の近傍に設け、
低CPMパーソナル用画像形成装置1内及び定着装置7
を冷却するものが用いられている。なお、10はファンを
回転させるモータ、16は給紙部、17は給紙トレイ、18は
排紙ころ、19は搬送ころをそれぞれ示す。
2. Description of the Related Art Conventionally, the number of copies per minute is 10 to 15
In a so-called low CPM personal image forming apparatus 1 having a small number of sheets, as shown in FIG. 3, a photoconductor 2, a charging device 3 for charging the photoconductor 2, and a latent image carried on the photoconductor 2 are developed. A developing device 4, a transfer device 5 for transferring the developed image to a transfer paper, a cleaning device 6 for removing the toner remaining on the photoconductor 2 after the transfer, and a fixing for thermally fixing the toner image transferred on the transfer paper. And a fan 9 having a filter 8 for discharging the air in the low CPM personal image forming apparatus 1 in the vicinity of the fixing device 7.
Inside the low CPM personal image forming apparatus 1 and the fixing device 7
Is used for cooling. In addition, 10 is a motor for rotating a fan, 16 is a paper feed unit, 17 is a paper feed tray, 18 is a paper ejection roller, and 19 is a conveyance roller.

【0003】前記のような低CPMパーソナル用画像形
成装置1からファン9によって排出されるオゾン濃度を
測定する場合、図4に示すように使用開始直後はオゾン
濃度が低く、時間の経過とともにオゾン濃度は飽和して
行き、通常、画像形成装置を連続的に数時間も動作させ
て飽和するまで行われている。このオゾン飽和値はファ
ン9の回転数すなわち風の流れる量に左右されるもので
ある。しかし、実際ユーザが低CPMパーソナル用画像
形成装置1を使用する場合、数時間も連続的に作動させ
ることは考えられず、また、排出されるオゾン濃度はフ
ァン9の風量に関係しており、風量が高いほどオゾンフ
ィルター8でオゾンを十分に吸収されないでオゾンが低
CPMパーソナル用画像形成装置1外へ排出されてしま
う。すなわち、風の流れる量、ファン9の回転数が多い
と機内温度は下がるが、オゾンの飽和値は高くなる。そ
して風の流れる量が低いと効率良くオゾンがオゾンフィ
ルター8に吸収されるためオゾンの飽和値は低くなる
が、あまり低くすると機内温度が高くなるという副作用
がでる。従来、通常画像形成装置で規定されているオゾ
ンの発生濃度を測定する際、実際に使用される条件にか
かわらずオゾン濃度が飽和するまで連続で画像形成装置
を数時間も動作させて測定するので、連続使用の少ない
低CPMパーソナル用画像形成装置1では実際ユーザが
感じるオゾン濃度以上で画像形成装置のオゾン濃度が飽
和していると計測され、実状と合致しなオゾンフィルタ
ー8が設置されている。
When measuring the ozone concentration discharged from the fan 9 from the low CPM personal image forming apparatus 1 as described above, the ozone concentration is low immediately after the start of use as shown in FIG. Is saturated, and normally, the image forming apparatus is continuously operated for several hours until saturated. The ozone saturation value depends on the rotation speed of the fan 9, that is, the amount of air flow. However, when the user actually uses the low CPM personal image forming apparatus 1, it is unlikely that the low CPM personal image forming apparatus 1 is continuously operated for several hours, and the ozone concentration discharged is related to the air volume of the fan 9. The higher the air volume, the more ozone is not absorbed by the ozone filter 8, and the ozone is discharged to the outside of the low CPM personal image forming apparatus 1. That is, when the amount of air flow and the number of rotations of the fan 9 are large, the temperature inside the machine decreases, but the saturation value of ozone increases. When the flow rate of the wind is low, ozone is efficiently absorbed by the ozone filter 8, so that the saturation value of ozone becomes low. However, if it is too low, the side effect is that the temperature inside the machine becomes high. Conventionally, when measuring the concentration of ozone generated, which is usually specified by the image forming apparatus, the image forming apparatus is continuously operated for several hours until the ozone concentration is saturated, regardless of the conditions actually used. In the low CPM personal image forming apparatus 1 that is used less continuously, it is measured that the ozone concentration of the image forming apparatus is saturated above the ozone concentration actually felt by the user, and the ozone filter 8 that does not match the actual state is installed. .

【0004】[0004]

【発明が解決しようとする課題】前記のような低CPM
パーソナル用画像形成装置では連続して数時間もコピー
することはなく、かつ、ファンを回転させるモータも一
定の回転速度で回転されており、従来の測定方法によっ
て実際ユーザが感じられるオゾン濃度以上で機械の排出
するオゾン濃度が飽和することとなり、オゾン濃度の飽
和値が実使用上より高く計測され、必要以上にオゾンフ
ィルターの性能をアップさせ、コストアップになってい
るという問題がある。
[Problems to be Solved by the Invention] Low CPM as described above
The personal image forming apparatus does not copy for several hours continuously, and the motor that rotates the fan is also rotated at a constant rotation speed. There is a problem that the ozone concentration discharged from the machine is saturated, the saturated value of the ozone concentration is measured higher than in actual use, the performance of the ozone filter is improved more than necessary, and the cost is increased.

【0005】そこでこの発明の目的は、前記のような従
来の低CPMパーソナル用画像形成装置がもつ問題を解
消し、実際に使用される条件に合わせ、オゾンを排出さ
せるファンの回転数を連続使用する時間、又は連続コピ
ー枚数に応じて低下させてオゾンフィルターの過剰仕様
を回避してオゾン飽和濃度を下げることができ、コスト
ダウンをはかることができる低CPMパーソナル用画像
形成装置を提供するにある。
Therefore, an object of the present invention is to solve the problems of the conventional low CPM personal image forming apparatus as described above, and to continuously use the rotation speed of the fan for discharging ozone in accordance with the conditions actually used. The present invention provides a low CPM personal image forming apparatus that can reduce the ozone saturation concentration by avoiding excessive specifications of the ozone filter by reducing the amount of time depending on the operating time or the number of continuous copies, and can reduce the cost. .

【0006】[0006]

【課題を解決するための手段】この発明は、前記のよう
な目的を達成するために、請求項1の発明は、感光体
と、感光体に帯電させる帯電装置と、感光体に担持され
た潜像を現像する現像装置と、現像された像を転写紙に
転写する転写装置と、転写後感光体に残留したトナーを
除去するクリーニング装置と、転写紙に転写されたトナ
ー像を熱定着する定着装置と、定着装置の近傍に設けら
れフィルターを有して画像形成装置内の空気を排出して
画像形成装置内を冷却するファンとを具えた画像形成装
置において、前記ファンの回転数を連続使用時間、又は
1回に行う連続コピー枚数に応じて低下させる制御装置
を設けたことを特徴とするものである。
In order to achieve the above-mentioned object, the present invention provides a photosensitive member, a charging device for charging the photosensitive member, and a photosensitive member. A developing device that develops a latent image, a transfer device that transfers the developed image to a transfer paper, a cleaning device that removes toner remaining on the photoconductor after transfer, and a toner image that is transferred onto the transfer paper is thermally fixed. In an image forming apparatus including a fixing device and a fan that is provided in the vicinity of the fixing device and has a filter that discharges air in the image forming device to cool the inside of the image forming device, the number of rotations of the fan is continuously set. It is characterized in that a control device for reducing the number of continuous copies to be used at one time is used.

【0007】[0007]

【作用】前記のようなこの発明において、制御装置が定
着装置の近傍に設けられフィルターを有して画像形成装
置内を冷却するファンの回転数を連続使用時間、又は1
回に行う連続コピー枚数に応じて低下させる。
In the present invention as described above, the control device is provided in the vicinity of the fixing device and has a filter to cool the inside of the image forming apparatus by changing the rotation speed of the fan for a continuous use time or 1
Decrease according to the number of continuous copies to be made each time.

【0008】[0008]

【実施例】この発明の実施例において、前記従来と同様
の部分については同一の符号を引用して説明を省略し、
主として異なる部分について説明する。この発明の実施
例は、図1,2に示すようであって、低CPMパーソナ
ル用画像形成装置1にファン9の回転数を連続使用時間
又は1回に行う連続コピー枚数に応じて低下させるよう
に制御するCPU12を有する制御装置11を設けたもので
ある。このCPU12には操作部13からコピー開始の信号
が入力され、CPU12が時間をカウントして連続使用時
間が所定時間経過する毎に、又は、あらかじめ設定され
た枚数のコピーが行われる毎に、段階的に回転数を下げ
るような信号を出力インターフェース22を介して出力
し、その出力がファン9を回転させるモータ10に入力さ
れ、ファン9の回転数を段階的に低下させる。その回転
数は画像形成装置の機種によって適宜選定して2/3〜
1/2まで下げるように設定して予めROM25に記憶さ
せておき、これをCPU12が呼び出して連続使用時間又
は連続コピー枚数の入力とともに演算してモータ10に駆
動信号を出力する。その回路構成は図2に示すようであ
る。なお、21は入力インターフェイス、23はデータアド
レスバス、24はRAMをそれぞれ示す。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiments of the present invention, the same parts as those in the prior art are designated by the same reference numerals and their description is omitted.
Mainly different parts will be described. The embodiment of the present invention is as shown in FIGS. 1 and 2, and the low CPM personal image forming apparatus 1 is configured to reduce the rotation speed of the fan 9 in accordance with the continuous use time or the number of continuous copies performed at one time. A control device 11 having a CPU 12 for controlling the above is provided. A signal to start copying is input to the CPU 12 from the operation unit 13, and the CPU 12 counts the time every time a continuous use time elapses for a predetermined time, or every time a preset number of sheets are copied, a step is performed. A signal for lowering the rotation speed is output through the output interface 22, and the output is input to the motor 10 for rotating the fan 9 to gradually decrease the rotation speed of the fan 9. The number of rotations is appropriately selected depending on the model of the image forming apparatus and is 2/3 to
It is set to be lowered to 1/2 and stored in the ROM 25 in advance. The CPU 12 calls it and calculates it together with the input of the continuous use time or the continuous copy number, and outputs a drive signal to the motor 10. The circuit configuration is as shown in FIG. Reference numeral 21 is an input interface, 23 is a data address bus, and 24 is a RAM.

【0009】低CPMのパーソナル用画像形成装置1の
連続コピーは多くても10分間程度の時間、又は、100枚
程度しか行われず、その程度の時間内では、機内温度の
上昇程度が低いのでファン9の回転数も下げることがで
き、風量が低ければ効率よくオゾンフィルター8でオゾ
ンが吸収されるので、連続動作させてオゾン濃度を測定
した場合、5〜10分間程度毎、又は、50〜100枚程度毎
に段階的にモータ10の回転数をおおよそ10%程度ずつ下
げていって風量を下げていっても機内温度を実使用上支
障のないものとすることができる。そして風量が低けれ
ばオゾンフィルター8で効率よくオゾンが吸収され、オ
ゾン濃度は、図4に示す点線のように、連続的に機械を
動作させて、かつモータ10も一定の回転数で作動させた
実線で示すものに比べて低くなり、実際にユーザが感じ
られる濃度に近いオゾン濃度で飽和する。従って、オゾ
ンフィルター8の性能もランクを下げたものを使用する
ことができてコストダウンをはかることができる。な
お、上記の連続使用の時間単位、又は連続コピーの枚数
はオゾン濃度が社内規格や各国の規格をクリヤーすると
いう条件の下で機種ごとに実験によって決められるもの
である。
The continuous copying of the low CPM personal image forming apparatus 1 is performed for about 10 minutes at most, or for about 100 sheets, and within that time, the temperature rise in the machine is low, so the fan The rotation speed of 9 can also be reduced, and if the air volume is low, ozone is efficiently absorbed by the ozone filter 8. Therefore, when continuously operating and measuring the ozone concentration, every 5 to 10 minutes, or 50 to 100 minutes. Even if the number of revolutions of the motor 10 is reduced stepwise by about 10% for each sheet, and the air volume is reduced, the temperature inside the machine can be made practically no problem. If the air volume is low, ozone is efficiently absorbed by the ozone filter 8, and the ozone concentration is such that the machine is continuously operated as shown by the dotted line in FIG. 4 and the motor 10 is also operated at a constant rotation speed. It becomes lower than that shown by the solid line and is saturated at an ozone concentration close to that actually felt by the user. Therefore, it is possible to use the ozone filter 8 having a lower rank in performance, and it is possible to reduce the cost. The above-mentioned time unit for continuous use or the number of continuous copies is determined by experiment for each model under the condition that the ozone concentration clears the in-house standard and the standards of each country.

【0010】[0010]

【発明の効果】この発明は、前記のようであって、請求
項1の発明は、感光体と、感光体に帯電させる帯電装置
と、感光体に担持された潜像を現像する現像装置と、現
像された像を転写紙に転写する転写装置と、転写後感光
体に残留したトナーを除去するクリーニング装置と、転
写紙に転写されたトナー像を熱定着する定着装置と、定
着装置の近傍に設けられフィルターを有して画像形成装
置内の空気を排出して画像形成装置内を冷却するファン
とを具えた画像形成装置において、前記ファンの回転数
を連続使用時間、又は1回に行う連続コピー枚数に応じ
て低下させる制御装置を設けたので、画像形成装置が排
出するオゾンの飽和濃度を低く抑えることができてオゾ
ンフィルターのコストダウンをはかることができるとい
う効果がある。
The present invention is as described above, and the invention of claim 1 is a photoconductor, a charging device for charging the photoconductor, and a developing device for developing a latent image carried on the photoconductor. , A transfer device for transferring the developed image to a transfer paper, a cleaning device for removing the toner remaining on the photoconductor after the transfer, a fixing device for thermally fixing the toner image transferred on the transfer paper, and the vicinity of the fixing device In an image forming apparatus having a fan provided with a filter for discharging air in the image forming apparatus to cool the inside of the image forming apparatus, the number of rotations of the fan is continuously used or once. Since the control device for reducing the number of continuous copies is provided, the saturation concentration of ozone discharged from the image forming apparatus can be suppressed to be low, and the cost of the ozone filter can be reduced.

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

【図1】この発明の実施例の概略縦断面図である。FIG. 1 is a schematic vertical sectional view of an embodiment of the present invention.

【図2】同上の制御装置の回路構成ブロック図である。FIG. 2 is a circuit configuration block diagram of the control device of the above.

【図3】従来のこの発明と同種の画像形成装置の概略縦
断面図である。
FIG. 3 is a schematic vertical sectional view of an image forming apparatus of the same type as the conventional invention.

【図4】時間経過とオゾン濃度との関係を表す特性図で
ある。
FIG. 4 is a characteristic diagram showing a relationship between elapsed time and ozone concentration.

【符号の説明】[Explanation of symbols]

1 低CPMパーソナル用画像形成装置 2 感光体 3 帯電装置 4 現像装置 5 転写装置 6 クリーニング装置 7 定着装置 8 オゾンフィルター 9 ファン 10 モータ 11 制御装置 12 CPU 13 操作部 22 出力インターフェイス 25 ROM 1 Low CPM Personal Image Forming Device 2 Photoreceptor 3 Charging Device 4 Developing Device 5 Transfer Device 6 Cleaning Device 7 Fixing Device 8 Ozone Filter 9 Fan 10 Motor 11 Controller 12 CPU 13 Operation Unit 22 Output Interface 25 ROM

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 感光体と、感光体に帯電させる帯電装置
と、感光体に担持された潜像を現像する現像装置と、現
像された像を転写紙に転写する転写装置と、転写後感光
体に残留したトナーを除去するクリーニング装置と、転
写紙に転写されたトナー像を熱定着する定着装置と、定
着装置の近傍に設けられフィルターを有して画像形成装
置内の空気を排出して画像形成装置内を冷却するファン
とを具えた画像形成装置において、前記ファンの回転数
を連続使用時間、又は1回に行う連続コピー枚数に応じ
て低下させる制御装置を設けたことを特徴とする画像形
成装置。
1. A photoconductor, a charging device for charging the photoconductor, a developing device for developing a latent image carried on the photoconductor, a transfer device for transferring the developed image to a transfer paper, and a photoconductor after transfer. A cleaning device that removes the toner remaining on the body, a fixing device that thermally fixes the toner image transferred to the transfer paper, and a filter that is provided near the fixing device to exhaust the air inside the image forming device An image forming apparatus having a fan for cooling the inside of the image forming apparatus is provided with a control device for reducing the rotation speed of the fan according to a continuous use time or the number of continuous copies performed at one time. Image forming apparatus.
JP6208290A 1994-09-01 1994-09-01 Image forming device Pending JPH0876657A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6208290A JPH0876657A (en) 1994-09-01 1994-09-01 Image forming device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6208290A JPH0876657A (en) 1994-09-01 1994-09-01 Image forming device

Publications (1)

Publication Number Publication Date
JPH0876657A true JPH0876657A (en) 1996-03-22

Family

ID=16553811

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6208290A Pending JPH0876657A (en) 1994-09-01 1994-09-01 Image forming device

Country Status (1)

Country Link
JP (1) JPH0876657A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014092718A (en) * 2012-11-05 2014-05-19 Konica Minolta Inc Image forming apparatus
JP2016061932A (en) * 2014-09-18 2016-04-25 富士ゼロックス株式会社 Image forming apparatus
JP2016224193A (en) * 2015-05-28 2016-12-28 キヤノン株式会社 Image forming apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014092718A (en) * 2012-11-05 2014-05-19 Konica Minolta Inc Image forming apparatus
JP2016061932A (en) * 2014-09-18 2016-04-25 富士ゼロックス株式会社 Image forming apparatus
JP2016224193A (en) * 2015-05-28 2016-12-28 キヤノン株式会社 Image forming apparatus

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