JP2003140514A - Image forming device - Google Patents
Image forming deviceInfo
- Publication number
- JP2003140514A JP2003140514A JP2001340975A JP2001340975A JP2003140514A JP 2003140514 A JP2003140514 A JP 2003140514A JP 2001340975 A JP2001340975 A JP 2001340975A JP 2001340975 A JP2001340975 A JP 2001340975A JP 2003140514 A JP2003140514 A JP 2003140514A
- Authority
- JP
- Japan
- Prior art keywords
- duct
- image forming
- ozone
- ozone filter
- forming apparatus
- 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
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 112
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000007599 discharging Methods 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000003570 air Substances 0.000 description 22
- 238000010276 construction Methods 0.000 description 9
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 239000006260 foam Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 102100032566 Carbonic anhydrase-related protein 10 Human genes 0.000 description 1
- 101000867836 Homo sapiens Carbonic anhydrase-related protein 10 Proteins 0.000 description 1
- 101100343202 Vicia faba LB29 gene Proteins 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Fixing For Electrophotography (AREA)
- Electrophotography Configuration And Component (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
- Control Or Security For Electrophotography (AREA)
- Treating Waste Gases (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は複写機等の電子写真
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 electrophotographic image forming apparatus such as a copying machine.
【０００２】[0002]
【従来の技術】従来、複写機等に使用される像担持体と
しての感光ドラムにイオン（電荷）を付与する装置とし
てコロナ帯電器が用いられている。前記コロナ帯電器の
帯電原理としては、帯電線に電圧を印加すると、帯電線
近傍の空気がイオン化し、そのイオンが感光ドラムに向
かって移動する。この放電により感光ドラムにイオンを
付着させる。このとき、同時に帯電線の近傍でオゾンが
発生する。オゾンはプラスチックやゴム等を劣化させる
性質を有するので装置外に排出する必要があるが、オゾ
ンは臭気をもち、かつ濃度が高いと人体に有害であるた
め、直接排出することができず、オゾンフィルターで所
定の濃度まで分解・除去してから装置外に排出してい
る。2. Description of the Related Art Conventionally, a corona charger has been used as an apparatus for applying ions (charges) to a photosensitive drum as an image carrier used in a copying machine or the like. As a charging principle of the corona charger, when a voltage is applied to the charging line, air near the charging line is ionized and the ions move toward the photosensitive drum. Ions are attached to the photosensitive drum by this discharge. At this time, ozone is simultaneously generated near the charging line. Ozone has the property of deteriorating plastics and rubber, etc., so it is necessary to discharge it outside the equipment.However, since ozone has an odor and is harmful to the human body when the concentration is high, it cannot be directly discharged. It is discharged to the outside of the device after being decomposed and removed to a specified concentration with a filter.
【０００３】帯電線近傍で発生したオゾンは、帯電線か
ら離れ拡散する方向に運動エネルギーを持ち、かつドラ
ムの回転等によって生ずる装置内の空気の流れによっ
て、帯電器内から装置内へ拡散する。従来、装置内に拡
散したオゾンは、周辺の空気といっしょにファンとダク
トにより集められ、オゾンフィルターを通して装置外に
排出されている。Ozone generated in the vicinity of the charging line has kinetic energy in the direction of diffusion away from the charging line, and is diffused from the charging device into the device by the flow of air in the device caused by rotation of the drum or the like. Conventionally, ozone diffused in the device is collected by a fan and a duct together with ambient air, and is discharged to the outside of the device through an ozone filter.
【０００４】従来のオゾンフィルターを具備する画像形
成装置において、オゾン補集のためのファン１００又は
クロスフローファン１０１、ダクト１０２、オゾンフィ
ルター１０３の構成について図５と図６に示す。FIGS. 5 and 6 show the structures of a fan 100 or a cross flow fan 101 for collecting ozone, a duct 102, and an ozone filter 103 in an image forming apparatus having a conventional ozone filter.
【０００５】図６において、帯電器１０８が感光ドラム
１０９を帯電するときに発生するオゾンは、定着器１０
７側に設けたダクト１０２を介してクロスフローファン
１０１により吸い取られ、直後のオゾンフィルター１０
３で分解・除去して装置外へ排気される。In FIG. 6, ozone generated when the charging device 108 charges the photosensitive drum 109 is the fixing device 10.
The ozone filter 10 immediately after being sucked by the cross flow fan 101 through the duct 102 provided on the 7 side.
It is decomposed and removed in 3 and exhausted to the outside of the equipment.
【０００６】ここで、図６のように画像形成装置を配置
したときに、図中手前側を前側とし図中背面側を後側と
する。Here, when the image forming apparatus is arranged as shown in FIG. 6, the front side in the drawing is the front side and the back side in the drawing is the rear side.
【０００７】図５においては、前後側板１０４、１０５
の内側に拡散したオゾンを後側板１０５に設けた穴１０
６からファン１００で吸い出し、ファン１００直後のオ
ゾンフィルター１０３で分解・除去してから装置外に排
気している。In FIG. 5, front and rear side plates 104, 105.
10 on the rear plate 105 for the ozone diffused inside the
It is sucked out of the fan 100 by the fan 100, decomposed and removed by the ozone filter 103 immediately after the fan 100, and then exhausted outside the apparatus.
【０００８】[0008]
【発明が解決しようとする課題】ファンにより装置内の
雰囲気を装置外へ排気する際に、オゾンフィルターはこ
の空気の流れの抵抗になる。この抵抗はオゾンフィルタ
ーの厚さに比例して増大する。一方、オゾンの除去能力
もオゾンフィルターの厚さに比例して良くなるため、所
定の除去能力を発揮するためには所定の厚さが必要とな
る。When the atmosphere inside the apparatus is exhausted to the outside of the apparatus by the fan, the ozone filter becomes a resistance to this air flow. This resistance increases in proportion to the thickness of the ozone filter. On the other hand, since the ozone removal capacity also improves in proportion to the thickness of the ozone filter, a predetermined thickness is required to exhibit the predetermined removal capacity.
【０００９】即ち、除去するオゾンの量によりオゾンフ
ィルターの厚さは決まるが、その厚さによってオゾンフ
ィルターの空気の流れ抵抗が高まる場合、オゾンを流す
ための風を作り出すファンに負荷がかかる。そのため、
ファンの回転数を低めて省電力化を計ったり、ファンを
小型化したりすることが困難であった。That is, although the thickness of the ozone filter is determined by the amount of ozone to be removed, if the air flow resistance of the ozone filter increases due to the thickness, a load is applied to a fan that creates a wind for flowing ozone. for that reason,
It has been difficult to reduce the rotation speed of the fan to save power and to downsize the fan.
【００１０】本発明の目的は、上記課題を解決するため
に、オゾンフィルターの厚さを薄くし、ファンの小型化
や低電力化を計ることである。In order to solve the above problems, an object of the present invention is to reduce the thickness of an ozone filter, downsize a fan, and reduce power consumption.
【００１１】[0011]
【課題を解決するための手段】本発明に係る画像形成装
置の第１の構成は、潜像が形成される像担持体を放電に
より帯電する帯電器と、前記潜像を現像することにより
得られ、記録材に転写された現像像を加熱・加圧により
定着させる定着器と、前記帯電器から発生するオゾンと
装置内の熱とを含む空気を装置外に排出する排気手段
と、前記排気手段により排出される空気を装置外へ案内
するダクトと、前記ダクト内に配設され前記排気手段に
より排出される空気中のオゾンを除去するオゾンフィル
ターと、を有し、前記ダクト及び前記オゾンフィルター
を前記定着器に設けている。The first structure of the image forming apparatus according to the present invention is obtained by developing the latent image and a charger for charging the image carrier on which the latent image is formed by discharging. And a fixing device for fixing the developed image transferred onto the recording material by heating and pressurizing, an exhaust means for discharging the air containing the ozone generated from the charging device and the heat in the device to the outside of the device, and the exhaust gas. A duct for guiding the air discharged by the means to the outside of the apparatus, and an ozone filter arranged in the duct for removing ozone in the air discharged by the exhaust means, the duct and the ozone filter Is provided in the fixing device.
【００１２】本発明に係る画像形成装置の第２の構成
は、上記第１の構成において、前記ダクト及び前記オゾ
ンフィルターは前記定着器内の上部に配置される。A second structure of the image forming apparatus according to the present invention is the same as the first structure, wherein the duct and the ozone filter are arranged in an upper portion of the fixing device.
【００１３】本発明に係る画像形成装置の第３の構成
は、上記第１又は第２の構成において、前記定着器は加
熱源を有する定着ローラーを具備し、前記オゾンフィル
ターは前記定着ローラーの上部に配置される。According to a third aspect of the image forming apparatus of the present invention, in the first or second aspect, the fixing device includes a fixing roller having a heating source, and the ozone filter is an upper portion of the fixing roller. Is located in.
【００１４】本発明に係る画像形成装置の第４の構成
は、上記第３の構成において、前記定着ローラーの上部
に近接する前記ダクト下部は、熱伝導性が良好な部材で
構成されている。In a fourth structure of the image forming apparatus according to the present invention, in the third structure, the lower part of the duct adjacent to the upper part of the fixing roller is composed of a member having good thermal conductivity.
【００１５】本発明に係る画像形成装置の第５の構成
は、上記第１から第４のいずれかの構成において、前記
ダクトの出口部に前記オゾンフィルターを配置する。A fifth construction of the image forming apparatus according to the present invention is the construction of any one of the first to fourth constructions, wherein the ozone filter is arranged at the outlet of the duct.
【００１６】本発明に係る画像形成装置の第６の構成
は、上記第１から第５のいずれかの構成において、前記
定着器は、前記定着器長手方向一方端側の前側板と、他
方本発明に係る画像形成装置の第２の構成は、上記第１
の構成において、端側の後側板とを有し、前記ダクトは
前記前側板と前記後側板に支持される。According to a sixth aspect of the image forming apparatus of the present invention, in any one of the first to fifth aspects, the fixing device includes a front plate on one end side in the longitudinal direction of the fixing device and a second sheet. A second configuration of the image forming apparatus according to the invention is the first configuration described above.
In this configuration, the rear side plate is provided on the end side, and the duct is supported by the front side plate and the rear side plate.
【００１７】本発明に係る画像形成装置の第７の構成
は、上記第１から第６のいずれかの構成において、前記
排気手段は記録材を装置外に排出する排紙側における装
置本体に設けられ、該排気手段の取付け部は開放可能と
なっている。A seventh construction of the image forming apparatus according to the present invention is the construction of any one of the first to sixth constructions, wherein the exhaust means is provided in the apparatus main body on the paper discharge side for discharging the recording material to the outside of the apparatus. The attachment portion of the exhaust means can be opened.
【００１８】本発明に係る画像形成装置の第８の構成
は、上記第１から第６のいずれかの構成において、前記
ダクトは、装置本体の後側に排気口を有し、該排気口と
略直角方向に吸入側を有する。An eighth construction of the image forming apparatus according to the present invention is the construction of any one of the first to sixth constructions, wherein the duct has an exhaust port on the rear side of the main body of the apparatus, and It has a suction side in a substantially right-angled direction.
【００１９】本発明に係る画像形成装置の第９の構成
は、上記第１から第８のいずれかの構成において前記排
気手段はファンである。In a ninth structure of the image forming apparatus according to the present invention, the exhaust means is a fan in any one of the first to eighth structures.
【００２０】本発明に係る画像形成装置の第１０の構成
は、上記第１から第９のいずれかの構成において前記帯
電器はコロナ帯電器である。In a tenth structure of the image forming apparatus according to the present invention, in any one of the first to ninth structures, the charger is a corona charger.
【００２１】[0021]
【発明の実施の形態】以下、本発明に係る実施の形態に
ついて図面に沿って説明する。なお本実施の形態におけ
る例示は本発明を限定することはない。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. Note that the examples in this embodiment do not limit the present invention.
【００２２】（実施の形態１）以下、本実施の形態１に
係るオゾンフィルターを具備する画像形成装置の一形態
としての複写機について図１から図３を参照して説明す
る。各図に共通する部材には同一の符号を記す。(Embodiment 1) A copying machine as one form of an image forming apparatus having an ozone filter according to Embodiment 1 will be described below with reference to FIGS. 1 to 3. The same reference numerals are given to members common to each drawing.
【００２３】図１は本実施の形態１に係る複写機の本体
断面図である。図１に示す複写機の配置で図中手前側を
前側とし図中背面側を後側とする。FIG. 1 is a sectional view of the main body of the copying machine according to the first embodiment. In the arrangement of the copying machine shown in FIG. 1, the front side in the figure is the front side and the back side in the figure is the rear side.
【００２４】図１において、複写機は、装置本体内を上
下方向に隔壁１、２により分割され、図中上方からリー
ダー部２４、スキャナー部３、画像形成部４及び給紙部
５により構成される。In FIG. 1, the copying machine is divided into upper and lower parts of the apparatus body by partition walls 1 and 2, and is composed of a reader portion 24, a scanner portion 3, an image forming portion 4 and a paper feeding portion 5 from the upper side in the drawing. It
【００２５】画像形成部４は、像担持体としての感光ド
ラム８を帯電する帯電器７と、記録材Ｓの搬送方向に対
して前記帯電器７の下流側（図中左側）に位置し記録材
Ｓにトナー画像を熱と圧力により定着する定着器１０
と、帯電器７から発生するオゾンや装置内の熱を含む空
気を排出するための排気手段としての排気ファン１９と
を有し、前記排気ファン１９により排出される空気を案
内するダクト９を定着器１０内に設け、空気の流れに対
して排気ファン１９の上流側のダクト９内にオゾンフィ
ルター１７を配設している。なお、帯電器７から発生す
るオゾンは、上下を隔壁１、２により仕切られているた
め画像形成部４の領域内のみで拡散する。また、帯電器
７としてはコロナ帯電器を使用するとよい。The image forming section 4 is located on the downstream side (left side in the drawing) of the charger 7 for charging the photosensitive drum 8 as an image carrier and the conveying direction of the recording material S and for recording. Fixing device 10 for fixing a toner image on material S by heat and pressure
And an exhaust fan 19 as an exhaust means for exhausting the air containing ozone generated by the charger 7 and heat in the apparatus, and the duct 9 for guiding the air exhausted by the exhaust fan 19 is fixed. An ozone filter 17 is provided in the duct 10 on the upstream side of the exhaust fan 19 with respect to the air flow. The ozone generated from the charger 7 is partitioned only by the partition walls 1 and 2 from above and below, so that the ozone diffuses only in the area of the image forming unit 4. A corona charger may be used as the charger 7.
【００２６】以下、図２と図３を用いて本実施の形態１
に特徴的な構成である定着器１０について説明する。図
２は本実施の形態１に係る定着器１０の断面図、図３は
本実施の形態１に係る定着器１０を前方左側からみた斜
視図である。Hereinafter, the first embodiment will be described with reference to FIGS. 2 and 3.
The fixing device 10 having a characteristic configuration will be described. 2 is a sectional view of the fixing device 10 according to the first embodiment, and FIG. 3 is a perspective view of the fixing device 10 according to the first embodiment as viewed from the front left side.
【００２７】定着器１０内に設けたハロゲンヒータ等の
熱源を内蔵する定着ローラー１１は、図示しないベアリ
ングを介して前後側板１３、１４により両端を回動支持
され、下側から図示しない加圧手段により加圧ローラー
１２が加圧当接されている。The fixing roller 11 provided in the fixing device 10 and containing a heat source such as a halogen heater is rotatably supported at both ends by front and rear side plates 13 and 14 via a bearing (not shown), and a pressing means (not shown) is provided from below. Due to this, the pressure roller 12 is in pressure contact.
【００２８】定着ローラー１１の図中上部に配置される
ダクト９は、定着ローラー１１の上部に沿う形状のステ
ーを兼ねるダクト下部１５と、前記ダクト下部１５の上
部に空隙を介して位置しステーを兼ねるダクト上部１６
とからなる。本実施の形態１において、前記ダクト下部
１５は熱伝導性を考慮してアルミで形成され、前記ダク
ト上部１６は断熱性を考慮してプラスチックで形成され
るが、夫々別の材質としても良い。The duct 9 arranged in the upper part of the fixing roller 11 in the figure has a duct lower portion 15 which also serves as a stay having a shape along the upper portion of the fixing roller 11, and a stay which is located above the duct lower portion 15 with a gap therebetween. Duct upper part which doubles as 16
Consists of. In the first embodiment, the lower duct portion 15 is made of aluminum in consideration of thermal conductivity, and the upper duct portion 16 is made of plastic in consideration of heat insulating property, but may be made of different materials.
【００２９】前記ダクト上部１６と下部１５の間隙が風
路として使用され、この風路の出口部にオゾンフィルタ
ー１７を狹持させる。この構成により、定着ローラー１
１の熱でダクト下部１５が加熱され、オゾンフィルター
１７が加熱されることによりオゾンの除去能力が高ま
る。The gap between the upper part 16 and the lower part 15 of the duct is used as an air passage, and the ozone filter 17 is held at the outlet of this air passage. With this configuration, the fixing roller 1
The lower part 15 of the duct is heated by the heat of 1, and the ozone filter 17 is heated, so that the ozone removal capability is enhanced.
【００３０】ダクト９に風を引き込むのはオゾンフィル
ター１７に連結する排紙部ダクト１８と排気ファン１９
である。排紙部ダクト１８と排気ファン１９の両部材は
装置本体の外観部材をなす排紙カバー２２に取り付けら
れている。空気の流れに対して排気ファン１９の下流側
に位置する排気カバー２２にはルーバー２０が形成され
ている。The air is drawn into the duct 9 by the discharge section duct 18 connected to the ozone filter 17 and the exhaust fan 19.
Is. Both members of the paper discharge unit duct 18 and the exhaust fan 19 are attached to a paper discharge cover 22 which is an external member of the apparatus main body. A louver 20 is formed on the exhaust cover 22 located on the downstream side of the exhaust fan 19 with respect to the flow of air.
【００３１】また、図１に示すように、排紙カバー２２
は回動軸２１を中心にして開閉可能である。オゾンフィ
ルター１７を交換するときは、排紙カバー２２を開くこ
とで、オゾンフィルター１７に容易にアクセスできる。Further, as shown in FIG.
Can be opened and closed around the rotation shaft 21. When replacing the ozone filter 17, the ozone filter 17 can be easily accessed by opening the discharge cover 22.
【００３２】また、図３に示すように、オゾンフィルタ
ー１７には発砲ウレタン２３が必要な面（上面及び左右
側面）に貼付られており、この発泡ウレタン２３をつぶ
す（変形させる）ことで簡単にオゾンフィルター１７が
着脱可能な構成になっている。本実施の形態１では、発
泡ウレタン２３を貼付けていないオゾンフィルター１７
の面（下面）とダクト下部１５とが直接接する向きにオ
ゾンフィルター１７を装着することで、オゾンフィルタ
ー１７の温度を高めようとしている。Further, as shown in FIG. 3, the foamed urethane 23 is attached to the required surface (top surface and right and left side surfaces) of the ozone filter 17, and the foamed urethane 23 can be easily crushed (deformed) to make it easy. The ozone filter 17 has a removable structure. In the first embodiment, the ozone filter 17 to which the urethane foam 23 is not attached is used.
By mounting the ozone filter 17 in a direction in which the surface (lower surface) of the above and the lower portion 15 of the duct are in direct contact with each other, the temperature of the ozone filter 17 is increased.
【００３３】本実施の形態１の場合、複写機がスタンバ
イ状態でのオゾンフィルター１７の温度は約４０℃に達
する。一方、従来の画像形成装置の場合、オゾンフィル
ター１０３は装置の外装のすぐ内側に配置されるので外
気温とほぼ同じになり、２０℃の室温下に装置が置かれ
た場合には、オゾンフィルター１０３の温度は約２０℃
である。In the case of the first embodiment, the temperature of the ozone filter 17 in the standby state of the copying machine reaches about 40.degree. On the other hand, in the case of the conventional image forming apparatus, since the ozone filter 103 is arranged just inside the exterior of the apparatus, it becomes almost the same as the outside temperature, and when the apparatus is placed at room temperature of 20 ° C., the ozone filter 103 The temperature of 103 is about 20 ℃
Is.
【００３４】次にオゾンフィルター１７のオゾン除去能
力の温度依存性について説明する。Next, the temperature dependence of the ozone removal capacity of the ozone filter 17 will be described.
【００３５】所定の条件下でオゾンフィルター１７を使
用した場合のオゾンフィルター１７の使用温度（オゾン
フィルター１７とオゾンエアの温度）とオゾン除去率の
関係を表１に示す。表１によれば、使用温度が高くなる
ほど除去率も高まり、この例では２０℃で８５％、４０
℃で９５％の除去率を示す。Table 1 shows the relationship between the operating temperature of the ozone filter 17 (the temperature of the ozone filter 17 and ozone air) and the ozone removal rate when the ozone filter 17 is used under predetermined conditions. According to Table 1, the higher the operating temperature, the higher the removal rate. In this example, 85% at 20 ° C, 40%
It shows a removal rate of 95% at ° C.
【００３６】[0036]
【表１】 [Table 1]
【００３７】後述するシミュレーションによると、オゾ
ンフィルターの断面積、風速、除去前後のオゾンの濃度
等の条件が等しい場合に同量のオゾンを除去するには、
除去率９５％のオゾンフィルターの厚さは除去率８５％
のものより約４割薄くできる。一方、オゾンフィルター
による空気の流路抵抗とオゾンフィルターの厚さは比例
するので、オゾンフィルターの厚さを約４割薄くすれば
ファンの風圧を約４割落とすことが可能になる。According to the simulation described later, when the conditions such as the cross-sectional area of the ozone filter, the wind speed, and the ozone concentration before and after removal are equal, the same amount of ozone can be removed by
Removal rate of 95% ozone filter is 85% removal rate
It can be made about 40% thinner than the ones. On the other hand, since the flow resistance of the air by the ozone filter is proportional to the thickness of the ozone filter, if the thickness of the ozone filter is reduced by about 40%, the wind pressure of the fan can be reduced by about 40%.
【００３８】このように、本実施の形態１によれば、定
着器からの熱によってオゾンフィルターを加熱する構成
とし、オゾンフィルターのオゾン除去能力を高めること
で、オゾンフィルターを薄型化できるため、ファンに掛
かる負荷が低減しファンの小型化と省電力化を実現でき
る。As described above, according to the first embodiment, the ozone filter is heated by the heat from the fixing device, and the ozone removing capability of the ozone filter is enhanced, so that the ozone filter can be made thin. The load on the fan can be reduced, and the fan can be downsized and power can be saved.
【００３９】また、オゾンフィルターの薄型化によりオ
ゾンフィルターのコストダウンも可能となる。Further, by reducing the thickness of the ozone filter, the cost of the ozone filter can be reduced.
【００４０】また、本実施の形態１によれば、オゾンフ
ィルターを透過する空気は、透過する前に定着器の上部
に近接するダクト内で加熱されるため、さらにオゾン除
去能力が高まる構成としている。Further, according to the first embodiment, since the air passing through the ozone filter is heated in the duct adjacent to the upper portion of the fixing device before passing through, the ozone removing ability is further enhanced. .
【００４１】以下、オゾンフィルターの厚さに関するシ
ミュレーションについて述べる。A simulation regarding the thickness of the ozone filter will be described below.
【００４２】オゾンフィルターの除去能力Ｋは下式で与
えられる。The removal capacity K of the ozone filter is given by the following equation.
【００４３】[0043]
【数１】 [Equation 1]
【００４４】Ｖ（ｍｍ／ｓ） ：風速
Ｃ（ｍｍ） ：オゾンフィルターの厚さ
ａ1（ｐｐｍ） ：除去前オゾン濃度
ａ2（ｐｐｍ） ：除去後オゾン濃度
ｌｎ ：自然対数
除去率９５％のオゾンフィルターの除去能力Ｋ95は下式
で与えられる。V (mm / s): Wind speed C (mm): Ozone filter thickness a 1 (ppm): Ozone concentration before removal a 2 (ppm): Ozone concentration after removal ln: Natural logarithmic removal rate of 95% The removal capacity K 95 of the ozone filter is given by the following equation.
【００４５】[0045]
【数２】 [Equation 2]
【００４６】除去率８５％のオゾンフィルターの除去能
力Ｋ85は下式で与えられるThe removal capacity K 85 of an ozone filter with a removal rate of 85% is given by the following equation.
【００４７】[0047]
【数３】 [Equation 3]
【００４８】風速、処理前後のオゾン濃度が等しいとき
各除去率９５％、８５％によるオゾンフィルターの厚さ
Ｃ95、Ｃ85の比は除去能力Ｋの逆数で与えられる。When the wind speed and the ozone concentration before and after the treatment are the same, the ratio of the ozone filter thicknesses C 95 and C 85 at the respective removal rates of 95% and 85% is given by the reciprocal of the removal capacity K.
【００４９】[0049]
【数４】 [Equation 4]
【００５０】これより、同条件下で同量のオゾンを除去
する場合、除去率９５％のオゾンフィルターの厚さは、
除去率８５％のオゾンフィルターの厚さの６３％（約４
割減）とすればよい。From this, when removing the same amount of ozone under the same conditions, the thickness of the ozone filter with a removal rate of 95% is
63% of the thickness of an ozone filter with a removal rate of 85% (approximately 4
Discount).
【００５１】また、従来の画像形成装置において排気さ
れる空気は、ファン→オゾンフィルターと流れる構成で
あり、かつ、装置を小型化するためにファンとオゾンフ
ィルターの距離が短い。ファン直後の空気の流れは乱流
であり、フィルター通過時の風損が大きい。また、軸流
ファンを用いる場合、ファン直後における風速はファン
の中心部ではほとんどゼロなので、オゾンフィルターの
断面積を有効に使い切ることができず、除去効率が悪
い。Further, the air exhausted in the conventional image forming apparatus has a structure of flowing from the fan to the ozone filter, and the distance between the fan and the ozone filter is short in order to downsize the apparatus. The air flow immediately after the fan is turbulent, and the wind loss when passing through the filter is large. Further, when an axial fan is used, the wind speed immediately after the fan is almost zero in the central part of the fan, so the cross-sectional area of the ozone filter cannot be used up effectively and the removal efficiency is poor.
【００５２】これに対し実施の形態では、空気はオゾン
フィルター→ファンと流れる構成なのでオゾンフィルタ
ーを通過する風は層流なので、除去効率がよい。On the other hand, in the embodiment, since the air flows from the ozone filter to the fan, the air passing through the ozone filter has a laminar flow, so that the removal efficiency is good.
【００５３】（実施の形態２）以下、本実施の形態２に
係る定着器について、図４に示す定着器及び送風ファン
を斜め後方からみた斜視図を参照して説明する。なお、
以下の説明において特に記述のない個所は前述の実施の
形態１と同様の構成としている。(Second Embodiment) The fixing device according to the second embodiment will be described below with reference to the perspective view of the fixing device and the blower fan shown in FIG. In addition,
In the following description, parts that are not particularly described have the same configurations as those in the first embodiment.
【００５４】本実施の形態２において、定着器５０上部
に配置されたダクト５３は定着器前後側板５１、５２に
よりビス固定され、前記ダクト５３の風路は図のＡ方向
からＢ方向へ直角に曲げられ、このダクト５３の出口部
にオゾンフィルター５４を配置している。図示しない本
体後側板の穴から定着器後側板５２の外側に取付けられ
た排気ダクト５５と、前記排気ダクト５５の出口部に配
置された送風ファン５６と、により装置内のオゾンを装
置外へ排気している。In the second embodiment, the duct 53 disposed on the upper portion of the fixing device 50 is fixed with screws by the front and rear side plates 51 and 52 of the fixing device, and the air passage of the duct 53 is perpendicular to the direction A from the direction B in the figure. The ozone filter 54 is bent and the ozone filter 54 is arranged at the exit of the duct 53. Ozone in the apparatus is exhausted to the outside of the apparatus by an exhaust duct 55 mounted outside the fuser rear side plate 52 through a hole in the rear side plate of the main body (not shown) and a blower fan 56 arranged at the outlet of the exhaust duct 55. is doing.
【００５５】本実施の形態２によれば、ソーター等の後
処理装置の都合により、本体左側に排気口を設けること
ができない場合に、本体後側から排気させる形態に対応
できる。According to the second embodiment, in the case where the exhaust port cannot be provided on the left side of the main body due to the convenience of the post-processing device such as the sorter, it is possible to cope with the form in which the rear side of the main body is exhausted.
【００５６】また、このような左側に後処理装置を有す
る場合は、Ｊａｍ処理の構成が定着ユニットを前方に引
き出して行うものが多い。そのため、オゾンフィルター
の交換は定着ユニットを前方に引き出した状態で容易に
行えることを想定している。When the post-processing device is provided on the left side, the Jam processing is often performed by pulling the fixing unit forward. Therefore, it is assumed that the ozone filter can be easily replaced with the fixing unit pulled out forward.
【００５７】本実施の形態２によれば、上述した実施の
形態１と同様の効果を得ることができる。According to the second embodiment, the same effect as that of the above-described first embodiment can be obtained.
【００５８】[0058]
【発明の効果】本発明によれば、ダクトとオゾンフィル
ターを定着器に設け、定着器からの熱をオゾンフィルタ
ーに伝達させ、オゾンフィルターのオゾン除去能力を高
めることで、オゾンフィルターの厚さを薄くでき、排気
ファンの小型化や省電力化を計ることができる。According to the present invention, the duct and the ozone filter are provided in the fixing device, the heat from the fixing device is transferred to the ozone filter, and the ozone removing ability of the ozone filter is enhanced, so that the thickness of the ozone filter can be improved. It can be made thinner, and the exhaust fan can be made smaller and power can be saved.
【図１】本発明の実施の形態１に係る複写機の本体断面
図。FIG. 1 is a sectional view of a main body of a copying machine according to a first embodiment of the present invention.
【図２】本発明の実施の形態１に係る定着器の断面図。FIG. 2 is a sectional view of the fixing device according to the first embodiment of the present invention.
【図３】本発明の実施の形態１に係る定着器を前方左側
からみた斜視図。FIG. 3 is a perspective view of the fixing device according to the first embodiment of the present invention as viewed from the front left side.
【図４】本発明の実施の形態２に係る定着器及び送風フ
ァンを斜め後方からみた斜視図。FIG. 4 is a perspective view of a fixing device and a blower fan according to Embodiment 2 of the present invention as seen obliquely from the rear.
【図５】本発明の従来例に係る画像形成装置を後方から
みた斜視図。FIG. 5 is a rear perspective view of an image forming apparatus according to a conventional example of the present invention.
【図６】本発明の従来例に係る画像形成装置の本体断面
図。FIG. 6 is a sectional view of a main body of an image forming apparatus according to a conventional example of the present invention.
１、２…隔壁 ３…スキ
ャナー部
４…画像形成部 ５…給紙部
６…転写器 ７…帯電器
８…感光ドラム ９…ダクト
１０…定着器 １１…定
着ローラー
１２…加圧ローラー １３…前側板
１４…後側板 １５…ダ
クト下部
１６…ダクト上部 １７…オゾンフ
ィルター
１８…排気部ダクト １９…排気ファ
ン
２０…ルーバー ２１…回転軸
２２…排紙カバー ２３…発泡ウレ
タン
５０…定着器 ５１…前
側板
５２…後側板 ５３…ダ
クト
５４…オゾンフィルター ５５…排気ダク
ト
５６…送風ファン １００…ファン
１０１…クロスフローファン
１０２…ダクト １０３…オゾン
フィルター
１０４…前側板 １０５…後側板
１０６…穴 １０７…定着器
１０８…帯電器 １０９…感光ド
ラム
Ｓ…記録材1, 2 ... Partition wall 3 ... Scanner unit 4 ... Image forming unit 5 ... Paper feeding unit 6 ... Transfer device 7 ... Charging device 8 ... Photosensitive drum 9 ... Duct 10 ... Fixing device 11 ... Fixing roller 12 ... Pressure roller 13 ... Previous Side plate 14 ... Rear plate 15 ... Duct lower part 16 ... Duct upper part 17 ... Ozone filter 18 ... Exhaust part duct 19 ... Exhaust fan 20 ... Louver 21 ... Rotating shaft 22 ... Paper discharge cover 23 ... Foam urethane 50 ... Fixing device 51 ... Front side plate 52 ... Rear side plate 53 ... Duct 54 ... Ozone filter 55 ... Exhaust duct 56 ... Blower fan 100 ... Fan 101 ... Cross flow fan 102 ... Duct 103 ... Ozone filter 104 ... Front side plate 105 ... Rear side plate 106 ... Hole 107 ... Fixing device 108 ... Charger 109 ... Photosensitive drum S ... Recording material
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｇ０３Ｇ 15/02 １０３ Ｂ０１Ｄ 53/34 ＺＡＢ ４Ｄ０４８ 15/20 １０１ 53/36 Ｆ Ｆターム(参考） 2H027 JA02 JA11 JB02 JB03 JB06 JB07 JB12 JB14 JB15 JB17 JC01 JC02 JC03 JC08 2H033 AA33 AA42 BA04 BA29 2H071 AA13 AA42 BA05 BA27 DA12 DA24 2H200 FA07 FA15 FA17 GA23 GB25 HA12 HB03 LB22 LB25 LB26 LB27 LB29 4D002 AA11 AC10 BA04 BA20 CA07 4D048 AA12 AB03 CA10 CC38 ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) G03G 15/02 103 B01D 53/34 ZAB 4D048 15/20 101 53/36 FF term (reference) 2H027 JA02 JA11 JB02 JB03 JB06 JB07 JB12 JB14 JB15 JB17 JC01 JC02 JC03 JC08 2H033 AA33 AA42 BA04 BA29 2H071 AA13 AA42 BA05 BA27 DA12 DA24 2H200 FA07 FA15 FA17 GA23 GB25 HA12 HB03 LB22 LB25 LB26 LB27 LB29 4D002 AA11 AC10 BA04 BA20 CA07 4D048 AA12 AB03 CA10 CC38
Claims (10)
帯電する帯電器と、前記潜像を現像することにより得ら
れ、記録材に転写された現像像を加熱・加圧により定着
させる定着器と、前記帯電器から発生するオゾンと装置
内の熱とを含む空気を装置外に排出する排気手段と、前
記排気手段により排出される空気を装置外へ案内するダ
クトと、前記ダクト内に配設され前記排気手段により排
出される空気中のオゾンを除去するオゾンフィルター
と、を有し、前記ダクト及び前記オゾンフィルターを前
記定着器に設けたことを特徴とする画像形成装置。1. A charging device for charging an image carrier on which a latent image is formed by discharging, and a developed image obtained by developing the latent image and transferred onto a recording material is fixed by heating and pressing. A fixing unit, an exhaust unit for exhausting air containing ozone generated from the charging unit and heat in the apparatus to the outside of the apparatus, a duct for guiding the air exhausted by the exhaust section to the outside of the apparatus, and the inside of the duct And an ozone filter for removing ozone in the air exhausted by the exhausting means, the duct and the ozone filter being provided in the fixing device.
前記定着器内の上部に配置されることを特徴とする請求
項１に記載の画像形成装置。2. The image forming apparatus according to claim 1, wherein the duct and the ozone filter are disposed in an upper portion of the fixing device.
ーを具備し、前記オゾンフィルターは前記定着ローラー
の上部に配置されることを特徴とする請求項１又は２に
記載の画像形成装置。3. The image forming apparatus according to claim 1, wherein the fixing device includes a fixing roller having a heat source, and the ozone filter is disposed above the fixing roller.
ダクト下部は、熱伝導性が良好な部材で構成されている
ことを特徴とする請求項３に記載の画像形成装置。4. The image forming apparatus according to claim 3, wherein the lower portion of the duct, which is adjacent to the upper portion of the fixing roller, is made of a member having good thermal conductivity.
ターを配置することを特徴とする請求項１から４のいず
れかに記載の画像形成装置。5. The image forming apparatus according to claim 1, wherein the ozone filter is arranged at the outlet of the duct.
端側の前側板と、他方端側の後側板とを有し、前記ダク
トは前記前側板と前記後側板に支持されることを特徴と
する請求項１から５のいずれかに記載の画像形成装置。6. The fixing device has a front side plate on one end side in the fixing device longitudinal direction and a rear side plate on the other end side, and the duct is supported by the front side plate and the rear side plate. The image forming apparatus according to any one of claims 1 to 5, which is characterized in that.
る排紙側における装置本体に設けられ、該排気手段の取
付け部は開放可能となっていることを特徴とする請求項
１から６のいずれかに記載の画像形成装置。7. The apparatus according to claim 1, wherein the exhaust means is provided in a main body of the apparatus on a paper discharge side for discharging the recording material to the outside of the apparatus, and a mounting portion of the exhaust means can be opened. The image forming apparatus according to any one of 1.
を有し、該排気口と略直角方向に吸入側を有することを
特徴とする請求項１から６のいずれかに記載の画像形成
装置。8. The image according to claim 1, wherein the duct has an exhaust port on the rear side of the main body of the apparatus, and has an intake side in a direction substantially perpendicular to the exhaust port. Forming equipment.
とする請求項１から８のいずれかに記載の画像形成装
置。9. The image forming apparatus according to claim 1, wherein the exhaust unit is a fan.
を特徴とする請求項１から９のいずれかに記載の画像形
成装置。10. The image forming apparatus according to claim 1, wherein the charger is a corona charger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001340975A JP2003140514A (en) | 2001-11-06 | 2001-11-06 | Image forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001340975A JP2003140514A (en) | 2001-11-06 | 2001-11-06 | Image forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003140514A true JP2003140514A (en) | 2003-05-16 |
Family
ID=19155093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001340975A Pending JP2003140514A (en) | 2001-11-06 | 2001-11-06 | Image forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003140514A (en) |
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|---|---|---|---|---|
| US7460809B2 (en) | 2005-07-06 | 2008-12-02 | Canon Kabushiki Kaisha | Air processing apparatus and image forming system |
| JP2008310103A (en) * | 2007-06-15 | 2008-12-25 | Konica Minolta Business Technologies Inc | Image forming apparatus |
| JP2010282095A (en) * | 2009-06-05 | 2010-12-16 | Sharp Corp | Image forming apparatus and ion generating device |
| JP2013003507A (en) * | 2011-06-21 | 2013-01-07 | Konica Minolta Business Technologies Inc | Image forming apparatus |
| US8478156B2 (en) | 2010-02-26 | 2013-07-02 | Konica Minolta Business Technologies, Inc | Image forming apparatus having air duct facing fixing member |
| US8554104B2 (en) | 2010-02-26 | 2013-10-08 | Konica Minolta Business Technologies, Inc. | Image forming apparatus having a fixing device including an exhaust fan |
| JP2015141338A (en) * | 2014-01-29 | 2015-08-03 | パナソニックＩｐマネジメント株式会社 | image forming apparatus |
| US9268304B2 (en) | 2014-01-29 | 2016-02-23 | Panasonic Intellectual Property Management Co., Ltd. | Image forming apparatus |
| US9405272B2 (en) | 2014-01-29 | 2016-08-02 | Panasonic Intellectual Property Management Co., Ltd. | Image forming apparatus including a duct filter having corrugated surface shape |
| US12105461B2 (en) | 2017-08-29 | 2024-10-01 | Canon Kabushiki Kaisha | Image forming apparatus having removable fixing portion and filter holder |
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2001
- 2001-11-06 JP JP2001340975A patent/JP2003140514A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7460809B2 (en) | 2005-07-06 | 2008-12-02 | Canon Kabushiki Kaisha | Air processing apparatus and image forming system |
| JP2008310103A (en) * | 2007-06-15 | 2008-12-25 | Konica Minolta Business Technologies Inc | Image forming apparatus |
| JP2010282095A (en) * | 2009-06-05 | 2010-12-16 | Sharp Corp | Image forming apparatus and ion generating device |
| US8478156B2 (en) | 2010-02-26 | 2013-07-02 | Konica Minolta Business Technologies, Inc | Image forming apparatus having air duct facing fixing member |
| US8554104B2 (en) | 2010-02-26 | 2013-10-08 | Konica Minolta Business Technologies, Inc. | Image forming apparatus having a fixing device including an exhaust fan |
| JP2013003507A (en) * | 2011-06-21 | 2013-01-07 | Konica Minolta Business Technologies Inc | Image forming apparatus |
| JP2015141338A (en) * | 2014-01-29 | 2015-08-03 | パナソニックＩｐマネジメント株式会社 | image forming apparatus |
| US9268304B2 (en) | 2014-01-29 | 2016-02-23 | Panasonic Intellectual Property Management Co., Ltd. | Image forming apparatus |
| US9405272B2 (en) | 2014-01-29 | 2016-08-02 | Panasonic Intellectual Property Management Co., Ltd. | Image forming apparatus including a duct filter having corrugated surface shape |
| US12105461B2 (en) | 2017-08-29 | 2024-10-01 | Canon Kabushiki Kaisha | Image forming apparatus having removable fixing portion and filter holder |
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