JP7029673B2

JP7029673B2 - Channel forming device and image forming device

Info

Publication number: JP7029673B2
Application number: JP2018093114A
Authority: JP
Inventors: 祥二佐々木
Original assignee: Ricoh Co Ltd
Current assignee: Ricoh Co Ltd
Priority date: 2018-05-14
Filing date: 2018-05-14
Publication date: 2022-03-04
Anticipated expiration: 2038-05-14
Also published as: JP2019200237A

Description

本発明は、流路形成装置及び画像形成装置に関するものである。 The present invention relates to a flow path forming apparatus and an image forming apparatus.

従来、気体の流路を形成する流路形成部材と、流路形成部材の内側表面に取り付けられた異物回収手段と、を備える流路形成装置が知られている。
例えば、特許文献１には、画像形成装置の定着装置の近傍の空気を装置の外部に排出する排気経路を形成するダクト（流路形成部材）と、このダクトの天井面に取り付けられた面状のフィルタ（異物回収手段）とを備える構成が記載されている。 Conventionally, a flow path forming device including a flow path forming member for forming a gas flow path and a foreign matter collecting means attached to the inner surface of the flow path forming member is known.
For example, Patent Document 1 describes a duct (flow path forming member) that forms an exhaust path for discharging air in the vicinity of the fixing device of the image forming device to the outside of the device, and a planar shape attached to the ceiling surface of the duct. A configuration including a filter (foreign matter collecting means) is described.

この種の流路形成装置では、流路形成部材を通過する気体に含まれる異物を異物回収手段で回収する回収率の向上が望まれる。 In this type of flow path forming apparatus, it is desired to improve the recovery rate of collecting foreign matter contained in the gas passing through the flow path forming member by the foreign matter collecting means.

上述した課題を解決するために、本発明は、気体の流路を形成する流路形成部材と、前記流路形成部材の内側表面に取り付けられた異物回収手段と、を備える流路形成装置において、前記流路形成部材における前記異物回収手段が取り付けられた部分を冷却する冷却手段を備え、前記流路形成部材は、装置内部の気体を装置外部に案内する排気経路を形成する排気経路形成部材であり、画像形成装置の内部の熱源の近傍の気体を外部に排気する構成であり、前記冷却手段は、前記画像形成装置の作像部から前記画像形成装置の外部に向かう排気を前記排気経路形成部材における前記異物回収手段が取り付けられた部分の外側表面に当てる構成であることを特徴とするものである。 In order to solve the above-mentioned problems, the present invention relates to a flow path forming apparatus including a flow path forming member for forming a gas flow path and a foreign matter collecting means attached to the inner surface of the flow path forming member. A cooling means for cooling a portion of the flow path forming member to which the foreign matter collecting means is attached is provided , and the flow path forming member is an exhaust path forming member that forms an exhaust path for guiding gas inside the device to the outside of the device. The gas in the vicinity of the heat source inside the image forming apparatus is exhausted to the outside, and the cooling means exhausts the exhaust from the image forming portion of the image forming apparatus to the outside of the image forming apparatus into the exhaust path. It is characterized in that the foreign matter collecting means of the forming member is applied to the outer surface of the attached portion .

本発明によれば、流路形成部材を通過する気体に含まれる異物を異物回収手段で回収する回収率の向上を図ることができる、という優れた効果がある。 According to the present invention, there is an excellent effect that the recovery rate of collecting foreign matter contained in the gas passing through the flow path forming member by the foreign matter collecting means can be improved.

実施例１の排気流路形成部の説明図。Explanatory drawing of the exhaust flow path formation part of Example 1. FIG. 本実施形態に係るプリンタの概略構成図。The schematic block diagram of the printer which concerns on this embodiment. 帯電部排気流路を示すプリンタの上面図。Top view of the printer showing the exhaust flow path of the charged portion. 後側板よりも筐体の後方の帯電部排気流路及び定着部排気流路を示すプリンタにおける空気の流路を形成する排気流路形成部の側面図。A side view of an exhaust flow path forming portion forming an air flow path in a printer showing a charged portion exhaust flow path and a fixing portion exhaust flow path behind the housing from the rear side plate. 排熱ダクトのダクト屈曲部材の斜視図。The perspective view of the duct bending member of a waste heat duct. 実施例２の排気流路形成部のダクト屈曲部材近傍の拡大側面図。An enlarged side view of the vicinity of the duct bending member of the exhaust flow path forming portion of the second embodiment. 実施例２の排気流路形成部のダクト屈曲部材近傍を背面側から見た斜視図。FIG. 3 is a perspective view of the vicinity of the duct bending member of the exhaust flow path forming portion of the second embodiment as viewed from the rear side. 帯電部排気流路に沿って流れる空気の向きに対する放熱フィンの傾きを異ならせた二つの例の説明図。Explanatory drawing of two examples in which the inclination of the radiating fin is different with respect to the direction of the air flowing along the exhaust flow path of the charged portion. 実施例３の排気流路形成部のダクト屈曲部材近傍の拡大側面図。An enlarged side view of the vicinity of the duct bending member of the exhaust flow path forming portion of the third embodiment. 実施例３の排気流路形成部のダクト屈曲部材近傍を背面側から見た斜視図。FIG. 3 is a perspective view of the vicinity of the duct bending member of the exhaust flow path forming portion of the third embodiment as viewed from the rear side. 実施例４の排気流路形成部の説明図、（ａ）は、排気流路形成部のダクト屈曲部材近傍の拡大側面図、（ｂ）は、排気流路形成部の排熱ダクトの排熱上流側ダクトの斜視図。An explanatory view of the exhaust flow path forming portion of the fourth embodiment, (a) is an enlarged side view of the vicinity of the duct bending member of the exhaust flow path forming portion, and (b) is the exhaust heat of the exhaust heat duct of the exhaust flow path forming portion. A perspective view of the upstream duct. 実施例５の排気流路形成部のダクト屈曲部材近傍の拡大側面図。An enlarged side view of the vicinity of the duct bending member of the exhaust flow path forming portion of the fifth embodiment.

以下、本発明に係る流路形成装置を画像形成装置に適用した実施形態について説明する。
図２は、本実施形態に係る画像形成装置であるプリンタ１００の概略構成図である。
プリンタ１００は、給紙部２、レジストローラ対１３、転写部１４、定着装置１５、排紙部１０、現像装置３、感光体４、帯電チャージャ５、帯電部排気ダクト６、定着部排気ダクト９、反転搬送部１１及び中継搬送部１２等を備える。 Hereinafter, an embodiment in which the flow path forming apparatus according to the present invention is applied to an image forming apparatus will be described.
FIG. 2 is a schematic configuration diagram of a printer 100, which is an image forming apparatus according to the present embodiment.
The printer 100 includes a paper feed unit 2, a resist roller pair 13, a transfer unit 14, a fixing device 15, a paper ejection unit 10, a developing device 3, a photoconductor 4, a charging charger 5, a charging unit exhaust duct 6, and a fixing unit exhaust duct 9. , The reverse transfer unit 11, the relay transfer unit 12, and the like are provided.

給紙部２によって給紙された用紙Ｐは、レジストローラ対１３に搬送される。レジストローラ対１３では用紙Ｐの先端の位置ずれを補正する。
ドラム状の感光体４の表面は、帯電チャージャ５でのコロナ放電によって均一に帯電され、その後、露光装置によって露光されることによって、部分的に電荷を逃がして静電潜像が形成される。 The paper P fed by the paper feed unit 2 is conveyed to the resist roller pair 13. The registration roller pair 13 corrects the misalignment of the tip of the paper P.
The surface of the drum-shaped photoconductor 4 is uniformly charged by the corona discharge in the charging charger 5, and then exposed by an exposure apparatus to partially release the charge to form an electrostatic latent image.

プリンタ１００では、静電潜像が形成された感光体４の表面に、現像装置３から帯電したトナーを静電潜像に供給する現像によって可視画像を形成する。感光体４の表面上の可視画像が、感光体４と転写部１４の転写部材とが対向する転写位置に到達するタイミングに合わせてレジストローラ対１３を駆動し、用紙Ｐを転写位置に向けて送り出す。
現像によって感光体４の表面上に形成した可視画像（トナー像）は、レジストローラ対１３によって送り出されて転写位置に到達した用紙Ｐの表面上に転写する。転写位置で可視画像が転写された用紙Ｐを、転写部１４の搬送ベルトによって搬送し、定着装置１５に受け渡す。定着装置１５では、用紙Ｐの表面上に転写された可視画像を熱によって融着して、用紙Ｐの表面上に可視画像を定着する。 In the printer 100, a visible image is formed on the surface of the photoconductor 4 on which the electrostatic latent image is formed by development in which toner charged from the developing device 3 is supplied to the electrostatic latent image. The resist roller pair 13 is driven at the timing when the visible image on the surface of the photoconductor 4 reaches the transfer position where the photoconductor 4 and the transfer member of the transfer unit 14 face each other, and the paper P is directed toward the transfer position. send out.
The visible image (toner image) formed on the surface of the photoconductor 4 by development is transferred onto the surface of the paper P which is sent out by the resist roller pair 13 and reaches the transfer position. The paper P on which the visible image is transferred at the transfer position is conveyed by the transfer belt of the transfer unit 14 and delivered to the fixing device 15. In the fixing device 15, the visible image transferred on the surface of the paper P is fused by heat to fix the visible image on the surface of the paper P.

可視画像が定着された用紙Ｐは、排紙部１０の排紙ローラ対１０ａによって筐体の外に排紙されるか、反転搬送部１１に搬送される。反転搬送部１１に搬送された用紙Ｐは、反転されて中継搬送部１２に搬送され、再び、レジストローラ対１３に搬送され、所定のタイミングで転写位置に向けて搬送される。その後、用紙Ｐの裏面にも画像が形成され、筐体の外へ排紙される。 The paper P on which the visible image is fixed is discharged to the outside of the housing by the paper ejection roller pair 10a of the paper ejection unit 10, or is conveyed to the reverse transfer unit 11. The paper P conveyed to the reverse transfer unit 11 is inverted and conveyed to the relay transfer unit 12, again conveyed to the resist roller pair 13, and conveyed toward the transfer position at a predetermined timing. After that, an image is formed on the back surface of the paper P, and the paper is discharged to the outside of the housing.

プリンタ１００は、後側板１と前側板とを備え、図２に示す各部材は、後側板１と前側板との間に配置されている。
プリンタ１００は、帯電チャージャ５近傍の空気を機外に向けて案内する帯電部排気ダクト６を備え、定着装置１５近傍の空気を機外に向けて案内する定着部排気ダクト９を備える。
後側板１には、帯電部排気ダクト６と連通する帯電部排気開口部７と、定着部排気ダクト９と連通する定着部排気開口部８と、が設けられている。 The printer 100 includes a rear side plate 1 and a front side plate, and each member shown in FIG. 2 is arranged between the rear side plate 1 and the front side plate.
The printer 100 includes a charging portion exhaust duct 6 that guides the air in the vicinity of the charging charger 5 toward the outside of the machine, and a fixing portion exhaust duct 9 that guides the air in the vicinity of the fixing device 15 toward the outside of the machine.
The rear side plate 1 is provided with a charging portion exhaust opening 7 communicating with the charging portion exhaust duct 6 and a fixing portion exhaust opening 8 communicating with the fixing portion exhaust duct 9.

図２中の破線の矢印「Ｆ１」は、帯電チャージャ５の近傍を通過し、帯電部排気ダクト６及び帯電部排気開口部７を介して機外に排出される気流の流路（以下、「帯電部排気流路Ｆ１」という）を示している。
図２中の一点鎖線の矢印「Ｆ２」は、定着装置１５の近傍を通過し、定着部排気ダクト９及び定着部排気開口部８を介して機外に排出される気流の流路（以下、「定着部排気流路Ｆ２」という）を示している。 The broken line arrow “F1” in FIG. 2 passes through the vicinity of the charged charger 5 and is discharged to the outside of the machine through the charged portion exhaust duct 6 and the charged portion exhaust opening 7 (hereinafter, “” Charged part exhaust flow path F1 ”) is shown.
The arrow “F2” of the alternate long and short dash line in FIG. 2 passes through the vicinity of the fixing device 15 and is discharged to the outside of the machine through the fixing portion exhaust duct 9 and the fixing portion exhaust opening 8 (hereinafter referred to as “the flow path of the airflow”). "Fixed portion exhaust flow path F2") is shown.

図３は、帯電部排気流路Ｆ１を示すプリンタ１００の上面図である。
図４は、後側板１よりも筐体の後方（図２中の奥方向）の帯電部排気流路Ｆ１及び定着部排気流路Ｆ２を示すプリンタ１００における空気の流路を形成する排気流路形成部２００を図２及び図３中の右側から見た側面図である。
図３及び図４に示すように、後側板１の後方には、帯電部排気ファン２３と定着部排気ファン１９とが配置されている。 FIG. 3 is a top view of the printer 100 showing the charged portion exhaust flow path F1.
FIG. 4 shows an exhaust flow path forming an air flow path in the printer 100 showing the charged portion exhaust flow path F1 and the fixing portion exhaust flow path F2 behind the housing (in the back direction in FIG. 2) from the rear side plate 1. 2 is a side view of the forming portion 200 as viewed from the right side in FIGS. 2 and 3.
As shown in FIGS. 3 and 4, a charging portion exhaust fan 23 and a fixing portion exhaust fan 19 are arranged behind the rear side plate 1.

図３及び図４に示すように、プリンタ１００の後部には、帯電部排気流路Ｆ１及び定着部排気流路Ｆ２が内部を通過する流路カバー１１０が設けられている。また、図４に示すように、流路カバー１１０の下端には、帯電部排気流路Ｆ１及び定着部排気流路Ｆ２が機外に繋がる排気開口部１１１を有する。
図４に示すように、流路カバー１１０の内部には、定着部排気ファン１９を通過した空気を排気開口部１１１の上方まで案内する排熱ダクト３５が設けられている。
排熱ダクト３５は、排熱上流側ダクト２２と、ダクト屈曲部材２８と、排熱下流側ダクト３３とを備える。 As shown in FIGS. 3 and 4, a flow path cover 110 through which the charged portion exhaust flow path F1 and the fixing portion exhaust flow path F2 pass is provided at the rear portion of the printer 100. Further, as shown in FIG. 4, the lower end of the flow path cover 110 has an exhaust opening 111 in which the charged portion exhaust flow path F1 and the fixing portion exhaust flow path F2 are connected to the outside of the machine.
As shown in FIG. 4, the inside of the flow path cover 110 is provided with a heat exhaust duct 35 that guides the air that has passed through the fixing portion exhaust fan 19 to the upper part of the exhaust opening 111.
The exhaust heat duct 35 includes an exhaust heat upstream side duct 22, a duct bending member 28, and a waste heat exhaust downstream side duct 33.

図３中の「Ｆ１」で示すように、プリンタ１００の筐体の後方から吸引された外気は帯電チャージャ５の近傍に到達する。帯電部排気ファン２３の駆動により帯電部排気ダクト６の内部に負圧が生じ、帯電チャージャ５の近傍の空気が帯電部排気ダクト６に流入する。帯電部排気ダクト６に流入した空気は、帯電部排気開口部７から帯電部排気ファン２３によって吸引されて、流路カバー１１０の内部を通過し、排気開口部１１１から機外に排気される。 As shown by "F1" in FIG. 3, the outside air sucked from the rear of the housing of the printer 100 reaches the vicinity of the charged charger 5. A negative pressure is generated inside the charged portion exhaust duct 6 by driving the charged portion exhaust fan 23, and air in the vicinity of the charged portion exhaust duct 6 flows into the charged portion exhaust duct 6. The air that has flowed into the charged portion exhaust duct 6 is sucked from the charged portion exhaust opening 7 by the charged portion exhaust fan 23, passes through the inside of the flow path cover 110, and is exhausted to the outside of the machine through the exhaust opening 111.

帯電チャージャ５は、放電によって感光体４を帯電させており、この放電によってオゾンが発生する。このオゾンは、帯電部排気流路Ｆ１に沿って機外に排気される空気とともに、機外に向けて移動する。帯電部排気流路Ｆ１における帯電部排気ファン２３の下流側には、機内で発生したオゾンを分解するオゾンフィルタ３１が配置されている。 The charged charger 5 charges the photoconductor 4 by discharging, and ozone is generated by this discharging. This ozone moves toward the outside of the machine together with the air exhausted to the outside of the machine along the exhaust flow path F1 of the charged portion. An ozone filter 31 that decomposes ozone generated in the machine is arranged on the downstream side of the charged portion exhaust fan 23 in the charged portion exhaust flow path F1.

定着装置１５では、用紙Ｐを高温に加熱するため、機内の空気の温度が上昇する。このため、機内温度の上昇や用紙Ｐの冷却のために、定着部排気ファン１９によって、定着部排気開口部８を介して定着部排気ダクト９から定着装置１５近傍の空気を吸引して、機外に排出している。定着部排気ファン１９によって吸引された空気は、排熱ダクト３５を通過して、排熱ダクト開口部３５０及び排気開口部１１１を通過して機外に排気される。
定着部排気流路Ｆ２における定着部排気ファン１９の下流側の排熱ダクト３５内には、微粒子フィルタ２０が配置されている。 In the fixing device 15, since the paper P is heated to a high temperature, the temperature of the air in the machine rises. Therefore, in order to raise the temperature inside the machine and cool the paper P, the fixing unit exhaust fan 19 sucks air in the vicinity of the fixing device 15 from the fixing portion exhaust duct 9 through the fixing portion exhaust opening 8. It is discharged to the outside. The air sucked by the fixing portion exhaust fan 19 passes through the exhaust heat duct 35, passes through the exhaust heat duct opening 350 and the exhaust opening 111, and is exhausted to the outside of the machine.
A fine particle filter 20 is arranged in the exhaust heat duct 35 on the downstream side of the fixing portion exhaust fan 19 in the fixing portion exhaust flow path F2.

〔実施例１〕
次にプリンタ１００が備える排気流路形成部２００の一つ目の実施例（以下、「実施例１」と呼ぶ）について説明する。
図１は、実施例１の排気流路形成部２００の説明図であり、図４に示す排気流路形成部２００のオゾンフィルタ３１及び微粒子フィルタ２０近傍の拡大側面図である。
定着部排気ファン１９が回転することで、定着装置１５の上方の温度が上昇した空気が定着部排気ダクト９に吸引され、排熱ダクト３５を介して機外に排出されることで、排熱される。定着部排気流路Ｆ２に沿って流れる空気が、微粒子フィルタ２０をい通過することで定着装置１５で発生した微粒子を微粒子フィルタ２０で回収する。
定着装置１５で発生する微粒子としては、定着ローラ等の定着部材を構成するゴム層から発生する微粒子（シロキサン等）、紙粉及びトナー粉塵を例示することができるが、これらに限るものではない。 [Example 1]
Next, a first embodiment (hereinafter, referred to as “Example 1”) of the exhaust flow path forming unit 200 included in the printer 100 will be described.
FIG. 1 is an explanatory view of the exhaust flow path forming portion 200 of the first embodiment, and is an enlarged side view of the vicinity of the ozone filter 31 and the fine particle filter 20 of the exhaust flow path forming portion 200 shown in FIG.
By rotating the fixing portion exhaust fan 19, the air whose temperature has risen above the fixing device 15 is sucked into the fixing portion exhaust duct 9, and is discharged to the outside of the machine through the fixing portion exhaust duct 35, so that the heat is exhausted. Is done. The air flowing along the fixing portion exhaust flow path F2 passes through the fine particle filter 20, and the fine particles generated by the fixing device 15 are collected by the fine particle filter 20.
Examples of the fine particles generated by the fixing device 15 include fine particles (siloxane and the like) generated from a rubber layer constituting a fixing member such as a fixing roller, paper dust, and toner dust, but are not limited thereto.

図５は、排熱ダクト３５における排気方向の微粒子フィルタ２０の下流側に位置するダクト屈曲部材２８の斜視図である。図５（ａ）は、ダクト屈曲部材２８を外側から見た斜視図であり、図５（ｂ）はダクト屈曲部材２８を内側から見た斜視図である。
図１及び図５に示すように、排気流路形成部２００では、ダクト屈曲部材２８における内側表面に、不織布からなる微粒子吸着部材２１が貼り付けられている。微粒子吸着部材２１によって、微粒子フィルタ２０で取り切れなかった微粒子を回収することで微粒子の捕集能力を向上させることができる。 FIG. 5 is a perspective view of a duct bending member 28 located on the downstream side of the fine particle filter 20 in the exhaust direction in the exhaust heat duct 35. FIG. 5A is a perspective view of the duct bending member 28 as viewed from the outside, and FIG. 5B is a perspective view of the duct bending member 28 as viewed from the inside.
As shown in FIGS. 1 and 5, in the exhaust flow path forming portion 200, the fine particle adsorption member 21 made of a non-woven fabric is attached to the inner surface of the duct bending member 28. The fine particle adsorption member 21 can improve the ability to collect fine particles by collecting the fine particles that could not be removed by the fine particle filter 20.

また、図１及び図４に示すように、排気流路形成部２００では、排熱ダクト３５のカーブを形成するダクト屈曲部材２８に微粒子吸着部材２１を取り付けている。排熱ダクト３５に沿って流れてきた気流が向きを変える箇所に微粒子吸着部材２１を設けることで、微粒子吸着部材２１による微粒子の捕集効率の向上を図っている。 Further, as shown in FIGS. 1 and 4, in the exhaust flow path forming portion 200, the fine particle adsorption member 21 is attached to the duct bending member 28 forming the curve of the exhaust heat duct 35. By providing the fine particle adsorption member 21 at a position where the airflow flowing along the exhaust heat duct 35 changes direction, the collection efficiency of fine particles by the fine particle adsorption member 21 is improved.

さらに、実施例１の排気流路形成部２００では、ダクト屈曲部材２８における内側表面に微粒子吸着部材２１を貼り付けた部分の外側表面である吸着部材貼付外壁面２８ｆに、オゾンフィルタ３１を通過した気流を案内する気流ガイド板２７を備える。
図１に示すように、帯電部排気ファン２３によって送り出された空気は、Ｙ軸方向に延在する排気ダクト３４を通過してオゾンフィルタ３１を通過して、Ｙ軸方向に流れる。このとき、気流ガイド板２７に突き当たり、下方に向かうように案内される。気流ガイド板２７によって気流を案内することで、帯電部排気流路Ｆ１は、図１に示すように、吸着部材貼付外壁面２８ｆに当たり、吸着部材貼付外壁面２８ｆに沿って流れるような流路となる。 Further, in the exhaust flow path forming portion 200 of the first embodiment, the ozone filter 31 has passed through the suction member-attached outer wall surface 28f, which is the outer surface of the portion of the duct bending member 28 where the fine particle adsorption member 21 is attached to the inner surface. An airflow guide plate 27 for guiding the airflow is provided.
As shown in FIG. 1, the air sent out by the charged portion exhaust fan 23 passes through the exhaust duct 34 extending in the Y-axis direction, passes through the ozone filter 31, and flows in the Y-axis direction. At this time, it hits the airflow guide plate 27 and is guided downward. By guiding the airflow with the airflow guide plate 27, the charged portion exhaust flow path F1 hits the suction member-attached outer wall surface 28f and flows along the suction member-attached outer wall surface 28f, as shown in FIG. Become.

排熱ダクト３５内を定着部排気流路Ｆ２に沿って移動する空気は、プリンタ１００内における定着装置１５の上方の空気を排気するものであり、定着装置１５で加熱され、比較的温度が高い空気である。一方、排熱ダクト３５の外を帯電部排気流路Ｆ１に沿って移動する空気は、外気を吸引した空気が、帯電チャージャ５の近傍を通過し、帯電部排気ダクト６内を通過して排気するものであり、排熱ダクト３５内の空気よりも温度が低い空気である。 The air moving in the exhaust heat duct 35 along the fixing portion exhaust flow path F2 exhausts the air above the fixing device 15 in the printer 100, is heated by the fixing device 15, and has a relatively high temperature. It's air. On the other hand, as for the air moving outside the exhaust heat duct 35 along the charging portion exhaust flow path F1, the air sucking the outside air passes near the charging charger 5 and passes through the inside of the charging portion exhaust duct 6 to be exhausted. This is air whose temperature is lower than that of the air in the exhaust heat duct 35.

排熱ダクト３５内の空気よりも温度が低い空気を吸着部材貼付外壁面２８ｆに当てることで、微粒子吸着部材２１の近傍の排熱ダクト３５の内側と外側とで温度差が生じ、排熱ダクト３５内の微粒子吸着部材２１の近傍の空気は冷却される。
プリンタ１００では、排熱ダクト３５内を定着部排気流路Ｆ２に沿って移動する空気の微粒子吸着部材２１よりも上流側での温度は約６０［℃］であった。また、気流ガイド板２７によって吸着部材貼付外壁面２８ｆに向けて案内される前の帯電部排気流路Ｆ１に沿って移動する空気の温度はプリンタ１００が設置された室温とほぼ同じ温度であった。
定着部排気流路Ｆ２に沿って移動する空気の温度は、室温に比べて十分に高いため、帯電部排気流路Ｆ１に沿って移動する空気によって定着部排気流路Ｆ２に沿って移動する空気を冷却することが可能となる。 By applying air having a temperature lower than that of the air in the exhaust heat duct 35 to the outer wall surface 28f to which the suction member is attached, a temperature difference is generated between the inside and the outside of the heat exhaust duct 35 in the vicinity of the fine particle suction member 21, and the heat exhaust duct is exhausted. The air in the vicinity of the fine particle adsorbing member 21 in 35 is cooled.
In the printer 100, the temperature on the upstream side of the fine particle adsorption member 21 of the air moving along the fixing portion exhaust flow path F2 in the exhaust heat duct 35 was about 60 [° C.]. Further, the temperature of the air moving along the charged portion exhaust flow path F1 before being guided toward the outer wall surface 28f to which the suction member is attached by the air flow guide plate 27 was substantially the same as the room temperature at which the printer 100 was installed. ..
Since the temperature of the air moving along the fixing portion exhaust flow path F2 is sufficiently higher than the room temperature, the air moving along the fixing portion exhaust flow path F2 by the air moving along the charging portion exhaust flow path F1. Can be cooled.

帯電部排気流路Ｆ１を吸着部材貼付外壁面２８ｆに向ける気流ガイド板２７は、流路形成部材である排熱ダクト３５における異物回収手段である微粒子吸着部材２１が取り付けられた部分を冷却する冷却手段としての機能を有する。 The airflow guide plate 27 that directs the charged portion exhaust flow path F1 toward the outer wall surface 28f to which the suction member is attached cools the portion of the exhaust heat duct 35 that is the flow path forming member to which the fine particle suction member 21 that is the foreign matter recovery means is attached. It has a function as a means.

冷却された空気は容積が低下し、気圧が下がるため、微粒子吸着部材２１近傍の気圧が低下し、排熱ダクト３５内の温度が高く、気圧が高いところに位置する空気が、気圧の低い微粒子吸着部材２１近傍に寄せ付けられる。これにより、排熱ダクト３５内の空気に含まれる水蒸気も微粒子吸着部材２１近傍に寄せ付けられて冷却されて液体（水）となり、この液体に周囲の空気に含まれる微粒子が吸着されて、液体が微粒子と結合し、粒径の大きい微粒子が形成される。粒径が大きくなることで微粒子吸着部材２１に吸着し易くなり、排熱ダクト３５内の空気に含有される微粒子についての微粒子吸着部材２１による捕集効率を向上させることができる。微粒子吸着部材２１は、排熱ダクト３５の一部を形成するダクト屈曲部材２８とは別体で構成されており、必要に応じてダクト屈曲部材２８から取り外すことで微粒子吸着部材２１の交換が可能となっている。 Since the volume of the cooled air decreases and the atmospheric pressure decreases, the atmospheric pressure in the vicinity of the fine particle adsorption member 21 decreases, and the air located in the heat exhaust duct 35 where the temperature is high and the atmospheric pressure is high is the fine particles having a low atmospheric pressure. It is brought close to the suction member 21. As a result, the water vapor contained in the air in the exhaust heat duct 35 is also attracted to the vicinity of the fine particle adsorbing member 21 and cooled to become a liquid (water), and the fine particles contained in the surrounding air are adsorbed on this liquid to form a liquid. It combines with the fine particles to form fine particles with a large particle size. As the particle size becomes larger, it becomes easier to be adsorbed on the fine particle adsorbing member 21, and the collection efficiency of the fine particles contained in the air in the heat exhaust duct 35 by the fine particle adsorbing member 21 can be improved. The fine particle adsorption member 21 is configured separately from the duct bending member 28 forming a part of the exhaust heat duct 35, and the fine particle adsorption member 21 can be replaced by removing it from the duct bending member 28 as needed. It has become.

図５に示すように、ダクト屈曲部材２８は、取り外し可能な屈曲部カバー２９が固定されており、微粒子吸着部材２１は屈曲部カバー２９の内側表面に両面テープで張り付けられている。微粒子吸着部材２１に多くの微粒子が吸着されたり、微粒子吸着部材２１が経時で劣化したりする等によって微粒子吸着部材２１の微粒子の吸着性能が低下した際には、屈曲部カバー２９を取り外すことで微粒子吸着部材２１を容易に交換できる。これにより、微粒子吸着部材２１の吸着性能を維持することができる。 As shown in FIG. 5, a removable bent portion cover 29 is fixed to the duct bending member 28, and the fine particle adsorption member 21 is attached to the inner surface of the bending portion cover 29 with double-sided tape. When the adsorption performance of the fine particles of the fine particle adsorption member 21 deteriorates due to a large amount of fine particles adsorbed on the fine particle adsorption member 21 or the fine particle adsorption member 21 deteriorates over time, the bent portion cover 29 can be removed. The fine particle adsorption member 21 can be easily replaced. As a result, the adsorption performance of the fine particle adsorption member 21 can be maintained.

図１に示すように、帯電部排気流路Ｆ１に沿って流れる空気を、ダクト屈曲部材２８の外側の面に当てて、吸着部材貼付外壁面２８ｆを冷やすことで、排熱ダクト３５の内側と外側とで温度差を生じさせる。これにより、排熱ダクト３５における微粒子吸着部材２１を設けた壁面を外側から冷却し、微粒子吸着部材２１の周辺の空気を冷却して気圧を低くし、排熱ダクト３５内の空気を微粒子吸着部材２１の近傍に引き寄せることができる。このため、排熱ダクト３５内の空気と微粒子吸着部材２１との接触機会を増やすことができ、微粒子吸着部材２１による微粒子の捕集効率が向上する。 As shown in FIG. 1, the air flowing along the exhaust flow path F1 of the charged portion is applied to the outer surface of the duct bending member 28 to cool the outer wall surface 28f to which the suction member is attached, thereby forming the inside of the exhaust heat duct 35. Causes a temperature difference with the outside. As a result, the wall surface of the exhaust heat duct 35 provided with the fine particle adsorption member 21 is cooled from the outside, the air around the fine particle adsorption member 21 is cooled to lower the pressure, and the air in the exhaust heat duct 35 is absorbed by the fine particle adsorption member. It can be drawn to the vicinity of 21. Therefore, the chance of contact between the air in the exhaust heat duct 35 and the fine particle adsorption member 21 can be increased, and the collection efficiency of fine particles by the fine particle adsorption member 21 is improved.

プリンタ１００等の電子写真方式の画像形成装置では、定着装置が用紙Ｐ等の記録媒体上のトナーを高温で加熱することで、微粒子が発生することがある。このような微粒子が機外に排出されることを抑制する方法として、定着装置近傍の空気を機外に排出する排気経路に微粒子を捕集するフィルタを設けて、微粒子を回収する方法が考えられる。 In an electrophotographic image forming apparatus such as a printer 100, fine particles may be generated when the fixing apparatus heats toner on a recording medium such as paper P at a high temperature. As a method of suppressing the discharge of such fine particles to the outside of the machine, a method of collecting the fine particles by providing a filter for collecting the fine particles in the exhaust path for discharging the air in the vicinity of the fixing device to the outside of the machine can be considered. ..

排気経路を塞ぐようにフィルタを設置して微粒子を回収する構成で、フィルタによる回収効率を向上させようとすると、フィルタを追加して複数枚のフィルタを並べる構成やフィルタをさらに厚くする構成等が考えられる。しかし、これらの構成では、フィルタにおける抵抗で排気経路内の圧損が非常に高くなる。圧損が高くなった状態で、必要とする排気流量を確保するためには、排気の気流を発生させる排気ファンの出力を大きくする必要があり、騒音や消費電力が増加するおそれがある。 If you try to improve the collection efficiency by installing a filter so as to block the exhaust path and collect fine particles, you may have to add a filter to arrange multiple filters or make the filter thicker. Conceivable. However, in these configurations, the resistance in the filter causes a very high pressure drop in the exhaust path. In order to secure the required exhaust flow rate in a state where the pressure loss is high, it is necessary to increase the output of the exhaust fan that generates the exhaust air flow, which may increase noise and power consumption.

一方、実施例１の排気流路形成部２００では、微粒子フィルタ２０を備える構成に、ダクト屈曲部材２８の内側表面に微粒子吸着部材２１を追加した構成である。このような構成により、定着装置１５の周囲から排出される空気が排熱ダクト３５を通過するときに、空気に含有される微粒子を微粒子フィルタ２０だけでなく微粒子吸着部材２１でも回収する。このため、排熱ダクト３５を通過する空気からの微粒子の回収効率を向上させることができる。 On the other hand, in the exhaust flow path forming portion 200 of the first embodiment, the fine particle adsorption member 21 is added to the inner surface of the duct bending member 28 in addition to the configuration provided with the fine particle filter 20. With such a configuration, when the air discharged from the periphery of the fixing device 15 passes through the exhaust heat duct 35, the fine particles contained in the air are collected not only by the fine particle filter 20 but also by the fine particle adsorption member 21. Therefore, it is possible to improve the recovery efficiency of fine particles from the air passing through the exhaust heat duct 35.

さらに、実施例１の排気流路形成部２００は、内側表面に微粒子吸着部材２１を張り付けた排熱ダクト３５の外側表面を冷却する構成を備える。これにより、微粒子吸着部材２１近傍の排熱ダクト３５の内外に温度差を生じさせ、上述したように排熱ダクト３５内の空気を微粒子吸着部材２１近傍に引き寄せ、微粒子吸着部材２１による微粒子の回収能力を向上させることができる。微粒子フィルタ２０の枚数を増やしたり、微粒子フィルタ２０の厚みを厚くしたりすることなく、排熱ダクト３５を通過する空気に含まれる微粒子の回収能力を向上できるため、排気ファンの出力を大きくする必要性が低下する。よって、排気ファンの出力を大きくすることに起因する騒音や消費電力が増加することを抑制できる。 Further, the exhaust flow path forming portion 200 of the first embodiment has a configuration for cooling the outer surface of the exhaust heat duct 35 having the fine particle adsorption member 21 attached to the inner surface. As a result, a temperature difference is generated inside and outside the exhaust heat duct 35 near the fine particle adsorption member 21, the air in the exhaust heat duct 35 is attracted to the vicinity of the fine particle adsorption member 21, and the fine particles are collected by the fine particle adsorption member 21. You can improve your ability. Since it is possible to improve the recovery capacity of fine particles contained in the air passing through the exhaust heat duct 35 without increasing the number of fine particle filters 20 or increasing the thickness of the fine particle filters 20, it is necessary to increase the output of the exhaust fan. The sex is reduced. Therefore, it is possible to suppress an increase in noise and power consumption caused by increasing the output of the exhaust fan.

また、プリンタ１００内の空気に水蒸気が含まれている場合は、排熱ダクト３５内の空気が微粒子吸着部材２１近傍に引き寄せられ、冷却されることで水となり、この水が空気中の微粒子を吸着することで、微粒子の粒径が大きくなる。粒径が大きくなることで微粒子吸着部材２１によって捕集し易くなり、排熱ダクト３５を通過する空気に含まれる微粒子の捕集効率を向上でき、排気とともに微粒子が機外に排出されることを抑制できる。 When the air in the printer 100 contains water vapor, the air in the heat exhaust duct 35 is attracted to the vicinity of the fine particle adsorption member 21 and cooled to become water, and this water disperses the fine particles in the air. By adsorbing, the particle size of the fine particles becomes large. As the particle size becomes larger, it becomes easier to collect the particles by the fine particle adsorption member 21, the efficiency of collecting the fine particles contained in the air passing through the exhaust heat duct 35 can be improved, and the fine particles are discharged to the outside of the machine together with the exhaust. Can be suppressed.

排熱ダクト３５は、排気される空気である気体の流路を形成する流路形成部材である。また、排熱ダクト３５の一部であるダクト屈曲部材２８の内側表面に取り付けられた微粒子吸着部材２１は、空気に含まれる微粒子等の異物を回収する異物回収手段である。そして、気流ガイド板２７は、排熱ダクト３５における微粒子吸着部材２１が取り付けられた部分である屈曲部カバー２９の外側表面に、帯電部排気流路Ｆ１に沿って流れる空気が当たるように気流を案内して、冷却する冷却手段である。屈曲部カバー２９を冷却することで、排熱ダクト３５内の微粒子吸着部材２１近傍の空気の温度が下がり、気圧が下がることで、排熱ダクト３５を通過する空気が微粒子吸着部材２１に引き寄せられる。これにより、排熱ダクト３５を通過する空気の微粒子吸着部材２１との接触機会が増加し、空気中に含まれる微粒子等の異物を微粒子吸着部材２１が回収する回収性能の向上を図ることができる。 The exhaust heat duct 35 is a flow path forming member that forms a flow path for a gas that is exhausted air. Further, the fine particle adsorption member 21 attached to the inner surface of the duct bending member 28 which is a part of the exhaust heat duct 35 is a foreign matter collecting means for collecting foreign matter such as fine particles contained in the air. Then, the airflow guide plate 27 blows the airflow so that the air flowing along the charged portion exhaust flow path F1 hits the outer surface of the bent portion cover 29, which is the portion of the exhaust heat duct 35 to which the fine particle adsorption member 21 is attached. It is a cooling means that guides and cools. By cooling the bent portion cover 29, the temperature of the air in the vicinity of the fine particle adsorption member 21 in the exhaust heat duct 35 is lowered, and by lowering the air pressure, the air passing through the heat exhaust duct 35 is attracted to the fine particle adsorption member 21. .. As a result, the chance of contact of the air passing through the exhaust heat duct 35 with the fine particle adsorbing member 21 is increased, and the recovery performance of the fine particle adsorbing member 21 for collecting foreign substances such as fine particles contained in the air can be improved. ..

プリンタ１００の排気に含まれる微粒子等の異物を微粒子吸着部材２１で回収する回収性能が向上することにより、プリンタ１００の内部の異物がプリンタ１００の装置外部に流出することを抑制できる。
また、プリンタ１００の定着装置１５の近傍の空気を排出する排気に含まれる微粒子等の異物を微粒子吸着部材２１で回収する回収性能が向上することにより、定着時に生じた異物がプリンタ１００の装置外部に流出することを抑制できる。 By improving the collection performance of collecting foreign substances such as fine particles contained in the exhaust gas of the printer 100 by the fine particle adsorption member 21, it is possible to prevent the foreign matter inside the printer 100 from flowing out to the outside of the device of the printer 100.
Further, by improving the recovery performance of collecting foreign substances such as fine particles contained in the exhaust exhausting the air in the vicinity of the fixing device 15 of the printer 100 by the fine particle adsorbing member 21, the foreign substances generated at the time of fixing are outside the device of the printer 100. It is possible to suppress the outflow to.

実施例１の排気流路形成部２００は、冷却手段として、排熱ダクト３５における微粒子吸着部材２１が取り付けられた部分の外側表面に気流を当てる気流ガイド板２７を備える。冷却手段としては、気流を当てる方式に限らない。例えば、ヒートシンクや冷却ファンを用いるもの、ペルチエ素子を用いるものや、これらを組み合わせたものなどを採用することができる。また、気流等の気体に向けて放熱する空冷方式に限らず、水冷方式やガス冷方式等の冷却方式も採用することが可能である。
冷却手段として、気流を当てる方式を採用することにより、簡易な構成で、排熱ダクト３５における微粒子吸着部材２１が取り付けられた部分を冷却する構成を実現することが可能となる。これにより、微粒子フィルタ２０の追加や厚みの増加をすることなく、排熱ダクト３５を通過する空気からの捕集効率を向上することができるため、装置の大型化やコストの増大を抑制できる。 The exhaust flow path forming portion 200 of the first embodiment includes, as a cooling means, an air flow guide plate 27 that applies an air flow to the outer surface of the portion of the exhaust heat duct 35 to which the fine particle adsorption member 21 is attached. The cooling means is not limited to the method of applying an air flow. For example, one using a heat sink or a cooling fan, one using a Pertier element, or a combination thereof can be adopted. Further, not only the air cooling method that dissipates heat toward a gas such as an air flow, but also a cooling method such as a water cooling method or a gas cooling method can be adopted.
By adopting a method of applying an air flow as the cooling means, it is possible to realize a configuration of cooling the portion of the exhaust heat duct 35 to which the fine particle adsorption member 21 is attached with a simple configuration. As a result, it is possible to improve the collection efficiency from the air passing through the exhaust heat duct 35 without adding the fine particle filter 20 or increasing the thickness, so that it is possible to suppress an increase in size and cost of the device.

〔実施例２〕
次にプリンタ１００が備える排気流路形成部２００の二つ目の実施例（以下、「実施例２」と呼ぶ）について説明する。図６及び図７は、実施例２に係る排気流路形成部２００の説明図であり、図６は、排気流路形成部２００のダクト屈曲部材２８近傍の拡大側面図であり、図７は、排気流路形成部２００のダクト屈曲部材２８近傍をプリンタ１００の背面側から見た斜視図である。
図６及び図７に示すように、実施例２の排気流路形成部２００は、図１等を用いて説明した実施例１の排気流路形成部２００に対して、ダクト屈曲部材２８の屈曲部カバー２９にヒートシンク３０を追加した構成である。ヒートシンク３０を追加した点以外は、実施例１と共通する。 [Example 2]
Next, a second embodiment (hereinafter, referred to as “Example 2”) of the exhaust flow path forming portion 200 included in the printer 100 will be described. 6 and 7 are explanatory views of the exhaust flow path forming portion 200 according to the second embodiment, FIG. 6 is an enlarged side view of the vicinity of the duct bending member 28 of the exhaust flow path forming portion 200, and FIG. 7 is an enlarged side view. It is a perspective view of the vicinity of the duct bending member 28 of the exhaust flow path forming portion 200 as seen from the back side of the printer 100.
As shown in FIGS. 6 and 7, the exhaust flow path forming portion 200 of the second embodiment bends the duct bending member 28 with respect to the exhaust flow path forming portion 200 of the first embodiment described with reference to FIGS. 1 and the like. The heat sink 30 is added to the portion cover 29. It is common with the first embodiment except that the heat sink 30 is added.

実施例２では、微粒子吸着部材２１が内側表面に取り付けられた屈曲部カバー２９の外側表面にヒートシンク３０を配置している。ヒートシンク３０は、鉄、銅及びアルミニウム等の伝熱性の良好な部材を用いる。図６に示すように、オゾンフィルタ３１を通過した帯電部排気流路Ｆ１に沿って流れる空気を、ヒートシンク３０に当てることで、屈曲部カバー２９の外側表面の冷却効果が高まり、ダクト屈曲部材２８の内外での温度差が大きくなる。これにより、微粒子吸着部材２１による微粒子の捕集効率が向上する。 In the second embodiment, the heat sink 30 is arranged on the outer surface of the bent portion cover 29 to which the fine particle adsorption member 21 is attached to the inner surface. The heat sink 30 uses a member having good heat transfer properties such as iron, copper, and aluminum. As shown in FIG. 6, by applying the air flowing along the charged portion exhaust flow path F1 that has passed through the ozone filter 31 to the heat sink 30, the cooling effect of the outer surface of the bent portion cover 29 is enhanced, and the duct bending member 28 is enhanced. The temperature difference between the inside and outside of the is large. As a result, the collection efficiency of fine particles by the fine particle adsorbing member 21 is improved.

図６及び図７に示すように、ヒートシンク３０は、放熱フィン３０１を備え、帯電部排気流路Ｆ１に沿って流れる気流が放熱フィン３０１に当たるように案内する。放熱フィン３０１を備えることで、ヒートシンク３０の放熱効率が向上し、屈曲部カバー２９の外側表面の冷却効果の向上を図ることができる。
放熱フィン３０１としては、屈曲部カバー２９の材質を樹脂として、放熱フィン３０１を屈曲部カバー２９と一体で設けても良いし、さらに放熱性を高めるために、屈曲部カバー２９よりも伝熱性の良好な別部材としても良い。 As shown in FIGS. 6 and 7, the heat sink 30 is provided with the heat radiation fins 301, and guides the air flow flowing along the charged portion exhaust flow path F1 so as to hit the heat radiation fins 301. By providing the heat radiating fins 301, the heat radiating efficiency of the heat sink 30 can be improved, and the cooling effect of the outer surface of the bent portion cover 29 can be improved.
As the heat radiating fin 301, the material of the bent portion cover 29 may be made of resin, and the heat radiating fin 301 may be provided integrally with the bent portion cover 29. It may be a good separate member.

排熱ダクト３５における微粒子吸着部材２１が取り付けられた部分の外側表面に放熱フィン３０１を備えることで、送風手段である定着部排気ファン１９の追加や高出力化をすることなく、屈曲部カバー２９の外側表面の冷却効果の向上を図ることができる。これにより、微粒子吸着部材２１による微粒子の捕集効率が向上し、送風手段の追加や高出力化をすることによる騒音や消費電力の増加を抑制しつつ、排気とともに排出される微粒子の量を抑制することができる。 By providing the heat radiating fins 301 on the outer surface of the portion of the exhaust heat duct 35 to which the fine particle adsorption member 21 is attached, the bent portion cover 29 is provided without adding a fixing portion exhaust fan 19 as a blowing means or increasing the output. It is possible to improve the cooling effect of the outer surface of the. As a result, the collection efficiency of fine particles by the fine particle adsorption member 21 is improved, and the amount of fine particles discharged together with the exhaust gas is suppressed while suppressing the increase in noise and power consumption due to the addition of ventilation means and the increase in output. can do.

図８は、帯電部排気流路Ｆ１に沿って流れる空気の向きに対する放熱フィン３０１の傾きを異ならせた二つの例の説明図である。
図８（ａ）は、放熱フィン３０１を、流路形成部材である排熱ダクト３５の外側を移動する流体である帯電部排気流路Ｆ１に沿って流れる空気の流れに平行に配置した例の説明図である。図８（ａ）に示すように、帯電部排気流路Ｆ１に沿って流れる空気の流れに対して放熱フィン３０１が平行になるように構成したヒートシンク３０は、空気の流れを妨げることなく、放熱フィン３０１によって冷却効率を向上できる。 FIG. 8 is an explanatory diagram of two examples in which the inclinations of the heat radiating fins 301 with respect to the direction of the air flowing along the charged portion exhaust flow path F1 are different.
FIG. 8A shows an example in which the heat radiation fins 301 are arranged in parallel with the flow of air flowing along the charged portion exhaust flow path F1 which is a fluid moving outside the heat exhaust duct 35 which is a flow path forming member. It is explanatory drawing. As shown in FIG. 8A, the heat sink 30 configured so that the heat radiating fins 301 are parallel to the air flow flowing along the charged portion exhaust flow path F1 dissipates heat without obstructing the air flow. The cooling efficiency can be improved by the fins 301.

図８（ｂ）は、放熱フィン３０１を、流路形成部材である排熱ダクト３５の外側を移動する流体である帯電部排気流路Ｆ１に沿って流れる空気の流れに対して傾斜して配置した例の説明図である。図８（ｂ）に示すように、帯電部排気流路Ｆ１に沿って流れる空気の流れに対して放熱フィン３０１が斜めになるように構成したヒートシンク３０は、空気の流れに対して平行な構成よりも放熱フィン３０１による冷却効率の向上を図ることができる。 In FIG. 8B, the heat radiation fins 301 are arranged so as to be inclined with respect to the flow of air flowing along the charged portion exhaust flow path F1 which is a fluid moving outside the heat exhaust duct 35 which is a flow path forming member. It is explanatory drawing of the example. As shown in FIG. 8B, the heat sink 30 configured so that the heat radiation fins 301 are slanted with respect to the flow of air flowing along the exhaust flow path F1 of the charged portion is configured to be parallel to the flow of air. The cooling efficiency can be improved by the heat radiating fins 301.

〔実施例３〕
次にプリンタ１００が備える排気流路形成部２００の三つ目の実施例（以下、「実施例３」と呼ぶ）について説明する。図９及び図１０は、実施例３に係る排気流路形成部２００の説明図であり、図９は、排気流路形成部２００のダクト屈曲部材２８近傍の拡大側面図であり、図１０は、排気流路形成部２００のダクト屈曲部材２８近傍をプリンタ１００の背面側から見た斜視図である。 [Example 3]
Next, a third embodiment (hereinafter, referred to as “Example 3”) of the exhaust flow path forming portion 200 included in the printer 100 will be described. 9 and 10 are explanatory views of the exhaust flow path forming portion 200 according to the third embodiment, FIG. 9 is an enlarged side view of the vicinity of the duct bending member 28 of the exhaust flow path forming portion 200, and FIG. 10 is an enlarged side view. It is a perspective view of the vicinity of the duct bending member 28 of the exhaust flow path forming portion 200 as seen from the back side of the printer 100.

図９及び図１０に示すように、実施例３の排気流路形成部２００は、図１等を用いて説明した実施例１の排気流路形成部２００に対して、以下の点で異なる。
すなわち、気流ガイド板２７を備えておらず、オゾンフィルタ３１を通過した気流の流路に、ヒートシンク３０を配置し、ダクト屈曲部材２８の屈曲部カバー２９と、ヒートシンク３０とを、接続するヒートパイプ３２を備える点で異なる。これらの点以外は、上述した実施例１と共通する。 As shown in FIGS. 9 and 10, the exhaust flow path forming portion 200 of the third embodiment differs from the exhaust flow path forming portion 200 of the first embodiment described with reference to FIG. 1 and the like in the following points.
That is, the heat pipe is not provided with the airflow guide plate 27, the heat sink 30 is arranged in the flow path of the airflow passing through the ozone filter 31, and the bent portion cover 29 of the duct bending member 28 and the heat sink 30 are connected to each other. It differs in that it includes 32. Other than these points, it is common to the above-mentioned Example 1.

実施例３では、微粒子吸着部材２１が内側表面に取り付けられた屈曲部カバー２９の外側表面にヒートパイプ３２が取り付けられ、ヒートパイプ３２にはヒートシンク３０が取り付けられている。帯電部排気流路Ｆ１に沿って流れる空気が、オゾンフィルタ３１を通過してヒートシンク３０に当たる。ヒートパイプ３２を介してヒートシンク３０に伝わった熱を、オゾンフィルタ３１を通過した気流に放熱することで、屈曲部カバー２９の表面の熱を放熱している。ヒートシンク３０は熱伝導率の高いアルミニウムや銅で構成され、屈曲部カバー２９の外側表面の冷却効果を向上する。 In the third embodiment, the heat pipe 32 is attached to the outer surface of the bent portion cover 29 to which the fine particle adsorption member 21 is attached to the inner surface, and the heat sink 30 is attached to the heat pipe 32. The air flowing along the charged portion exhaust flow path F1 passes through the ozone filter 31 and hits the heat sink 30. The heat transferred to the heat sink 30 via the heat pipe 32 is dissipated to the air flow passing through the ozone filter 31, so that the heat on the surface of the bent portion cover 29 is dissipated. The heat sink 30 is made of aluminum or copper having high thermal conductivity, and improves the cooling effect of the outer surface of the bent portion cover 29.

図９に示すように、ヒートパイプ３２に取り付けたヒートシンク３０に、帯電部排気流路Ｆ１に沿って流れる空気を当てることで、ヒートパイプ３２からヒートシンク３０に伝わった熱を放熱でき、屈曲部カバー２９を冷却できる。これにより、屈曲部カバー２９の内側表面に張り付けられた微粒子吸着部材２１による微粒子の捕集効率が向上する。 As shown in FIG. 9, by applying the air flowing along the charging portion exhaust flow path F1 to the heat sink 30 attached to the heat pipe 32, the heat transferred from the heat pipe 32 to the heat sink 30 can be dissipated, and the bent portion cover can be dissipated. 29 can be cooled. As a result, the collection efficiency of fine particles by the fine particle adsorption member 21 attached to the inner surface of the bent portion cover 29 is improved.

〔実施例４〕
次にプリンタ１００が備える排気流路形成部２００の四つ目の実施例（以下、「実施例４」と呼ぶ）について説明する。図１１は、実施例４に係る排気流路形成部２００の説明図であり、図１１（ａ）は、排気流路形成部２００のダクト屈曲部材２８近傍の拡大側面図であり、図１１（ｂ）は、排気流路形成部２００の排熱ダクト３５を構成する排熱上流側ダクト２２の斜視図である。
図１１に示すように、実施例４の排気流路形成部２００は、図１等を用いて説明した実施例１の排気流路形成部２００に対して、排熱上流側ダクト２２の上部の排気ダクト３４との間に断熱材３６を追加した構成である。断熱材３６を追加した点以外は、実施例１と共通する。 [Example 4]
Next, a fourth embodiment (hereinafter, referred to as “Example 4”) of the exhaust flow path forming portion 200 included in the printer 100 will be described. 11 is an explanatory view of the exhaust flow path forming portion 200 according to the fourth embodiment, and FIG. 11A is an enlarged side view of the vicinity of the duct bending member 28 of the exhaust flow path forming portion 200, and is shown in FIG. 11 (a). b) is a perspective view of the exhaust heat upstream side duct 22 constituting the exhaust heat duct 35 of the exhaust flow path forming portion 200.
As shown in FIG. 11, the exhaust flow path forming portion 200 of the fourth embodiment is the upper part of the exhaust heat upstream duct 22 with respect to the exhaust flow path forming portion 200 of the first embodiment described with reference to FIG. The heat insulating material 36 is added between the exhaust duct 34 and the exhaust duct 34. It is common with the first embodiment except that the heat insulating material 36 is added.

断熱材３６を配置することで、微粒子吸着部材２１を設けた位置よりも上流側で、定着部排気流路Ｆ２に沿って移動する空気の熱が帯電部排気流路Ｆ１に沿って移動する空気に伝達することを抑制できる。これにより、排気ダクト３４を通過する空気が、排熱ダクト３５を通過する高温になった空気の影響を受けにくくなり、微粒子吸着部材２１が取り付けられたダクト屈曲部材２８の内部と外部とでの温度差を効率よく発生できる。このため、排熱ダクト３５内の微粒子吸着部材２１の近傍の空気を効率的に冷却でき、排熱ダクト３５内の空気を微粒子吸着部材２１の近傍に引き寄せることができ、微粒子吸着部材２１による微粒子の捕集効率が向上する。 By arranging the heat insulating material 36, the heat of the air moving along the fixing portion exhaust flow path F2 is moved along the charged portion exhaust flow path F1 on the upstream side of the position where the fine particle adsorption member 21 is provided. Can be suppressed from being transmitted to. As a result, the air passing through the exhaust duct 34 is less likely to be affected by the high temperature air passing through the exhaust heat duct 35, and the inside and outside of the duct bending member 28 to which the fine particle adsorption member 21 is attached. A temperature difference can be generated efficiently. Therefore, the air in the vicinity of the fine particle adsorption member 21 in the exhaust heat duct 35 can be efficiently cooled, the air in the exhaust heat duct 35 can be attracted to the vicinity of the fine particle adsorption member 21, and the fine particles formed by the fine particle adsorption member 21 can be attracted. The collection efficiency of the air is improved.

実施例４では、気流による冷却の効率を向上することで、微粒子フィルタ２０の枚数を増やしたり、微粒子フィルタ２０の厚みを厚くしたりすることなく、排熱ダクト３５を通過する空気に含まれる微粒子の回収能力を向上できる。このため、排気ファンの出力を大きくする必要性が低下し、排気ファンの出力を大きくすることに起因する騒音や消費電力が増加することを抑制できる。 In the fourth embodiment, by improving the cooling efficiency by the air flow, the fine particles contained in the air passing through the exhaust heat duct 35 without increasing the number of fine particle filters 20 or increasing the thickness of the fine particle filters 20. Can improve the recovery capacity of particles. Therefore, the need to increase the output of the exhaust fan is reduced, and it is possible to suppress an increase in noise and power consumption caused by increasing the output of the exhaust fan.

図１１（ｂ）に示すように、排熱上流側ダクト２２は、その内側の流路断面の断面積が下流側ほど広くなる形状である。これにより、排熱ダクト３５における排熱上流側ダクト２２の下流側に配置した透過型のフィルタである微粒子フィルタ２０を排熱ダクト３５の断面積に合わせて大きくでき、空気が微粒子フィルタ２０を通過するときの平均流速を低くできる。透過型のフィルタで異物を除去する場合、透過する流体の流速が遅い方がフィルタでの捕集効率は高くなるため、微粒子フィルタ２０を通過するときの空気の平均流速を低くすることで、微粒子フィルタ２０による微粒子の捕集効率の向上を図ることができる。 As shown in FIG. 11B, the waste heat upstream side duct 22 has a shape in which the cross-sectional area of the inner flow path cross section becomes wider toward the downstream side. As a result, the fine particle filter 20 which is a transmission type filter arranged on the downstream side of the exhaust heat upstream side duct 22 in the waste heat duct 35 can be enlarged according to the cross-sectional area of the exhaust heat duct 35, and air passes through the fine particle filter 20. The average flow velocity when doing so can be lowered. When removing foreign substances with a permeation type filter, the collection efficiency of the filter is higher when the flow velocity of the permeating fluid is slower. Therefore, by lowering the average flow velocity of air when passing through the fine particle filter 20, fine particles are removed. It is possible to improve the collection efficiency of fine particles by the filter 20.

〔実施例５〕
次にプリンタ１００が備える排気流路形成部２００の二つ目の実施例（以下、「実施例５」と呼ぶ）について説明する。図１２は、実施例５に係る排気流路形成部２００のダクト屈曲部材２８近傍の拡大側面図である。
図１１に示すように、実施例５の排気流路形成部２００は、図１等を用いて説明した実施例１の排気流路形成部２００に対して、微粒子フィルタ２０を微粒子吸着部材２１よりも下流側に配置した構成である。微粒子フィルタ２０の位置が異なる点以外は、実施例１と共通する。 [Example 5]
Next, a second embodiment (hereinafter, referred to as “Example 5”) of the exhaust flow path forming portion 200 included in the printer 100 will be described. FIG. 12 is an enlarged side view of the vicinity of the duct bending member 28 of the exhaust flow path forming portion 200 according to the fifth embodiment.
As shown in FIG. 11, the exhaust flow path forming portion 200 of the fifth embodiment uses the fine particle filter 20 from the fine particle adsorbing member 21 with respect to the exhaust flow path forming portion 200 of the first embodiment described with reference to FIG. Is also configured to be located on the downstream side. It is the same as that of the first embodiment except that the positions of the fine particle filters 20 are different.

実施例５のように、透過型フィルタである微粒子フィルタ２０を接触型の捕集手段である微粒子吸着部材２１の下流側に配置することで、微粒子吸着部材２１である程度の微粒子が除去された空気が微粒子フィルタ２０を通過する。このため、微粒子フィルタ２０の目詰まりを抑制でき、圧損が生じにくくなる。
また、水蒸気が冷却されて液化した液体に微粒子が吸着して、粒径が大きくなった微粒子を微粒子吸着部材２１で捕集しきれなかった場合、微粒子フィルタ２０が下流側にある構成であれば、捕集でき、装置外に排出されることを防止できる。 As in the fifth embodiment, by arranging the fine particle filter 20 which is a transmission type filter on the downstream side of the fine particle adsorption member 21 which is a contact type collection means, the air from which some fine particles are removed by the fine particle adsorption member 21. Passes through the fine particle filter 20. Therefore, clogging of the fine particle filter 20 can be suppressed, and pressure loss is less likely to occur.
Further, if the fine particles are adsorbed on the liquefied liquid obtained by cooling the water vapor and the fine particles having a large particle size cannot be collected by the fine particle adsorbing member 21, the fine particle filter 20 is located on the downstream side. , Can be collected and can be prevented from being discharged to the outside of the device.

微粒子フィルタ２０の配置としては、微粒子吸着部材２１の上流側と下流側との両方に配置してもよい。
上述した実施例１乃至５の排気流路形成部２００では、異物回収手段である微粒子吸着部材２１の上流側また下流側の少なくとも一方に、流路を塞ぐように配置された透過型のフィルタ部材である微粒子フィルタ２０を備える。
微粒子吸着部材２１の上流側に微粒子フィルタ２０を配置する構成では、微粒子フィルタ２０で回収しきれなかった異物（微粒子）を微粒子吸着部材２１で回収し、外部に排出されることを抑制できる。
微粒子吸着部材２１の下流側に微粒子フィルタ２０を配置する構成では、微粒子フィルタ２０に向かう気体に含まれる異物（微粒子）を予め除去し、微粒子フィルタ２０を通過する気体に含まれる異物の量を少なくできる。これにより、微粒子フィルタ２０の目詰まりを抑制し、目詰まりに起因する圧損を抑制できる。 The fine particle filter 20 may be arranged on both the upstream side and the downstream side of the fine particle adsorption member 21.
In the exhaust flow path forming portion 200 of Examples 1 to 5 described above, a transmission type filter member arranged so as to block the flow path on at least one of the upstream side and the downstream side of the fine particle adsorption member 21 which is a foreign matter collecting means. The fine particle filter 20 is provided.
In the configuration in which the fine particle filter 20 is arranged on the upstream side of the fine particle adsorption member 21, foreign matter (fine particles) that could not be collected by the fine particle filter 20 can be collected by the fine particle adsorption member 21 and suppressed from being discharged to the outside.
In the configuration in which the fine particle filter 20 is arranged on the downstream side of the fine particle adsorption member 21, foreign matter (fine particles) contained in the gas toward the fine particle filter 20 is removed in advance, and the amount of foreign matter contained in the gas passing through the fine particle filter 20 is reduced. can. As a result, clogging of the fine particle filter 20 can be suppressed, and pressure loss due to clogging can be suppressed.

上述した実施例１乃至実施例５では、本発明に係る流路形成装置をプリンタ１００等の画像形成装置の排気装置を構成する排気流路形成部２００に適用した構成である。
流路形成部材における異物回収手段が取り付けられた部分を冷却する冷却手段を備える流路形成装置としては、プリンタ１００等の装置内の気体を装置外に排出する排出装置に限らず、装置外の気体を装置内に吸気する吸気装置にも適用可能である。本発明に係る流路形成装置を吸気装置に適用することで、外気に含まれる異物の装置内への侵入を抑制できる。 In Examples 1 to 5 described above, the flow path forming device according to the present invention is applied to the exhaust flow path forming unit 200 constituting the exhaust device of the image forming device such as the printer 100.
The flow path forming device provided with the cooling means for cooling the portion of the flow path forming member to which the foreign matter collecting means is attached is not limited to the discharging device for discharging the gas in the device such as the printer 100 to the outside of the device. It can also be applied to an intake device that sucks gas into the device. By applying the flow path forming device according to the present invention to the intake device, it is possible to suppress the intrusion of foreign matter contained in the outside air into the device.

さらに、装置の吸気または排気を行う装置に限らず、気体の流路を形成する流路形成部材と、流路形成部材の内側表面に取り付けられた異物回収手段と、を備える流路形成装置であれば、本発明は適用可能である。 Further, the flow path forming device includes not only a device for inhaling or exhausting the device but also a flow path forming member for forming a gas flow path and a foreign matter collecting means attached to the inner surface of the flow path forming member. If so, the present invention is applicable.

以上に説明したものは一例であり、次の態様毎に特有の効果を奏する。 What has been described above is an example, and has a unique effect in each of the following aspects.

（態様１）
排気等の気体の流路（定着部排気流路Ｆ２等）を形成する排熱ダクト３５等の流路形成部材と、流路形成部材の内側表面に取り付けられた微粒子吸着部材２１等の異物回収手段と、を備える排気流路形成部２００等の流路形成装置において、流路形成部材における異物回収手段が取り付けられた部分を冷却する気流ガイド板２７等の冷却手段を備えることを特徴とする。
これによれば、上記実施例１について説明したように、冷却手段を備えることで、流路形成部材内における異物回収手段近傍の気体の温度が低下して体積が減少し、気圧が低下する。これにより、流路形成部材内における異物回収手段近傍以外の部分に位置する気体を異物回収手段近傍に引き寄せ、流路形成部材内の気体が異物回収手段に接触する機会が増加する。よって、流路形成部材を通過する気体に含まれる異物を異物回収手段で回収する回収率の向上を図ることができる。 (Aspect 1)
Foreign matter recovery such as a flow path forming member such as an exhaust heat duct 35 that forms a gas flow path (fixed portion exhaust flow path F2, etc.) such as exhaust gas, and a fine particle adsorption member 21 attached to the inner surface of the flow path forming member. The flow path forming device such as the exhaust flow path forming portion 200 including the means is provided with a cooling means such as an air flow guide plate 27 for cooling a portion of the flow path forming member to which the foreign matter collecting means is attached. ..
According to this, as described in the first embodiment, by providing the cooling means, the temperature of the gas in the vicinity of the foreign matter collecting means in the flow path forming member is lowered, the volume is reduced, and the atmospheric pressure is lowered. As a result, the gas located in the portion other than the vicinity of the foreign matter collecting means in the flow path forming member is attracted to the vicinity of the foreign matter collecting means, and the chance that the gas in the flow path forming member comes into contact with the foreign matter collecting means increases. Therefore, it is possible to improve the recovery rate of recovering the foreign matter contained in the gas passing through the flow path forming member by the foreign matter collecting means.

（態様２）
態様１において、冷却手段は、流路形成部材における異物回収手段が取り付けられた部分の外側表面（吸着部材貼付外壁面２８ｆ等）に気流を当てる構成であることを特徴とする。
これによれば、上記実施例１について説明したように、簡易な構成で、流路形成部材における異物回収手段が取り付けられた部分を冷却する構成を実現することが可能となる。また、微粒子フィルタ２０等の透過型フィルタと併用する構成では、透過型フィルタの追加や厚みの増加をすることなく、流路形成部材を通過する気体からの異物の回収効率を向上することができるため、装置の大型化やコストの増大を抑制できる。 (Aspect 2)
In the first aspect, the cooling means is characterized in that the air flow is applied to the outer surface (such as the outer wall surface 28f to which the suction member is attached) of the portion of the flow path forming member to which the foreign matter collecting means is attached.
According to this, as described in the first embodiment, it is possible to realize a configuration for cooling a portion of the flow path forming member to which the foreign matter collecting means is attached with a simple configuration. Further, in the configuration used in combination with the transmission type filter such as the fine particle filter 20, it is possible to improve the recovery efficiency of foreign matter from the gas passing through the flow path forming member without adding the transmission type filter or increasing the thickness. Therefore, it is possible to suppress the increase in size and cost of the device.

（態様３）
態様２において、外側表面に、冷却手段が当てる気流の流路（帯電部排気流路Ｆ１等）と、流路形成部材における異物回収手段が取り付けられていない部分の内部との間に断熱材３６等の断熱手段を備えることを特徴とする。
これによれば、上記実施例４について説明したように、異物回収手段を設けた位置よりも上流側等の流路形成部材における異物回収手段が取り付けられていない部分で、流路形成部材内の気体の熱が冷却に用いられる気体に伝達することを抑制できる。これにより、冷却に用いられる気体が、流路形成部材を通過する気体の熱の影響を受けにくくなり、流路形成部材における異物回収手段が取り付けられた部分の内部と外部とでの温度差を効率よく発生できる。このため、流路形成部材内の異物回収手段の近傍の気体は冷却され、流路形成部材内の気体を異物回収手段の近傍に引き寄せることができ、異物回収手段による微粒子等の異物の回収効率が向上する。 (Aspect 3)
In the second aspect, the heat insulating material 36 is between the flow path of the air flow (charged portion exhaust flow path F1 or the like) applied to the outer surface by the cooling means and the inside of the portion of the flow path forming member to which the foreign matter recovery means is not attached. It is characterized by being provided with heat insulating means such as.
According to this, as described in the fourth embodiment, in the portion of the flow path forming member such as upstream of the position where the foreign matter collecting means is provided, where the foreign matter collecting means is not attached, the inside of the flow path forming member. It is possible to suppress the transfer of the heat of the gas to the gas used for cooling. As a result, the gas used for cooling is less likely to be affected by the heat of the gas passing through the flow path forming member, and the temperature difference between the inside and the outside of the portion of the flow path forming member to which the foreign matter recovery means is attached is increased. It can be generated efficiently. Therefore, the gas in the vicinity of the foreign matter collecting means in the flow path forming member is cooled, and the gas in the flow path forming member can be attracted to the vicinity of the foreign matter collecting means, and the collecting efficiency of foreign matter such as fine particles by the foreign matter collecting means can be obtained. Is improved.

（態様４）
態様１乃至３の何れかの態様において、冷却手段として、流路形成部材における異物回収手段が取り付けられた部分の外側表面に放熱フィン３０１等の放熱フィンを備えることを特徴とする。
これによれば、上記実施例２について説明したように、放熱フィンを備えることで、異物回収手段が取り付けられた部分の外側表面の放熱効率が向上し、異物回収手段近傍を冷却する冷却効果の向上を図ることができる。 (Aspect 4)
In any of the first to third aspects, the cooling means is provided with heat radiation fins such as heat radiation fins 301 on the outer surface of the portion of the flow path forming member to which the foreign matter recovery means is attached.
According to this, as described in the second embodiment, by providing the heat radiating fins, the heat radiating efficiency of the outer surface of the portion to which the foreign matter collecting means is attached is improved, and the cooling effect of cooling the vicinity of the foreign matter collecting means is obtained. It can be improved.

（態様５）
態様４において、放熱フィンは、流路形成部材の外側を移動する空気等の流体の流れに平行に配置されていることを特徴とする。
これによれば、上記実施例２で図８（ａ）を用いて説明したように、流体の流れを妨げることなく、放熱フィンによって冷却効率を向上できる。 (Aspect 5)
In the fourth aspect, the heat radiation fins are arranged in parallel with the flow of a fluid such as air moving outside the flow path forming member.
According to this, as described with reference to FIG. 8A in the second embodiment, the cooling efficiency can be improved by the heat radiation fins without obstructing the flow of the fluid.

（態様６）
態様４において、放熱フィンは、流路形成部材の外側を移動する空気等の流体の流れに対して傾斜して配置されていることを特徴とする。
これによれば、上記実施例２で図８（ｂ）を用いて説明したように、放熱フィンが流体の流れに対して平行な構成よりも放熱フィンによる冷却効率の向上を図ることができる。 (Aspect 6)
In the fourth aspect, the heat radiation fins are arranged so as to be inclined with respect to the flow of a fluid such as air moving outside the flow path forming member.
According to this, as described with reference to FIG. 8B in the second embodiment, the cooling efficiency of the radiating fins can be improved rather than the configuration in which the radiating fins are parallel to the flow of the fluid.

（態様７）
態様１乃至６において、流路形成部材における異物回収手段が取り付けられた部分（屈曲部カバー２９の外側表面に取り付けられたヒートパイプ３２等）を、異物回収手段が取り付けられていない部分よりも熱伝導率の高い材質（アルミニウムや銅等）で構成することを特徴とする。
これによれば、上記実施例３について説明したように、流路形成部材における異物回収手段が取り付けられた部分の外側表面の放熱効率が向上し、異物回収手段近傍を冷却する冷却効果の向上を図ることができる。 (Aspect 7)
In aspects 1 to 6, the portion of the flow path forming member to which the foreign matter collecting means is attached (heat pipe 32 or the like attached to the outer surface of the bent portion cover 29) is more heat than the portion to which the foreign matter collecting means is not attached. It is characterized by being composed of a material with high conductivity (aluminum, copper, etc.).
According to this, as described in the third embodiment, the heat dissipation efficiency of the outer surface of the portion of the flow path forming member to which the foreign matter collecting means is attached is improved, and the cooling effect of cooling the vicinity of the foreign matter collecting means is improved. Can be planned.

（態様８）
態様１乃至７において、異物回収手段は、流路形成部材に対して取り外し可能であることを特徴とする。
これによれば、上記実施例１について説明したように、異物を回収する性能が低下したときに異物回収手段を交換することで、異物回収手段による異物の回収性能を維持することができる。 (Aspect 8)
In the first to seventh aspects, the foreign matter collecting means is removable with respect to the flow path forming member.
According to this, as described in the first embodiment, the foreign matter recovery performance by the foreign matter collecting means can be maintained by replacing the foreign matter collecting means when the foreign matter collecting performance deteriorates.

（態様９）
態様１乃至８において、流路形成部材は、プリンタ１００内部等の装置内部の空気等の気体を装置外部に案内する定着部排気流路Ｆ２等の排気経路を形成する排熱ダクト３５等の排気経路形成部材であることを特徴とする。
これによれば、上記実施例１について説明したように、装置内部の異物が装置外部に流出することを抑制できる。 (Aspect 9)
In aspects 1 to 8, the flow path forming member exhausts the exhaust heat duct 35 or the like that forms an exhaust path such as the fixing portion exhaust flow path F2 that guides a gas such as air inside the device such as the inside of the printer 100 to the outside of the device. It is characterized by being a path forming member.
According to this, as described in the first embodiment, it is possible to prevent foreign matter inside the device from flowing out to the outside of the device.

（態様１０）
態様９において、プリンタ１００等の画像形成装置の内部の定着装置１５等の熱源の近傍の気体を外部に排気する構成であり、冷却手段は、帯電チャージャ５近傍等の作像部から画像形成装置の外部に向かう排気を排気経路形成部材における異物回収手段が取り付けられた部分の外側表面に当てる構成であることを特徴とする。
これによれば、上記実施例１について説明したように、定着時等の熱源の稼働時に生じた異物が、排気とともに画像形成装置の装置外部に流出することを抑制できる。熱源としては、定着装置１５等の加熱方式の定着手段に限らず、稼働時に発熱し、近傍の気体を加熱するものであればよい。他の熱源としては、駆動モータ等の駆動源を挙げることができるが、これに限るものではない。 (Aspect 10)
In the ninth aspect, the gas in the vicinity of the heat source such as the fixing device 15 inside the image forming apparatus such as the printer 100 is exhausted to the outside, and the cooling means is the image forming apparatus from the image forming portion such as the vicinity of the charged charger 5. The exhaust gas toward the outside is applied to the outer surface of the portion of the exhaust path forming member to which the foreign matter collecting means is attached.
According to this, as described in the first embodiment, it is possible to prevent foreign matter generated during the operation of the heat source such as during fixing from flowing out to the outside of the image forming apparatus together with the exhaust gas. The heat source is not limited to the fixing means of the heating method such as the fixing device 15, and may be any heat source that generates heat during operation and heats nearby gas. Examples of other heat sources include, but are not limited to, drive sources such as drive motors.

（態様１１）
用紙Ｐ等の記録媒体に画像を形成する現像装置３、感光体４、帯電チャージャ５及び転写部１４等の作像手段と、装置内部の空気等の気体を装置外部に排出する排気流路形成部２００等の排気手段とを備えるプリンタ１００等の画像形成装置において、排気手段として、態様９または１０に係る排気装置を備えることを特徴とする。
これによれば、上記実施例１について説明したように、装置内部の異物が装置外部に流出することを抑制できる画像形成装置を実現できる。 (Aspect 11)
An image-forming means such as a developing device 3, a photoconductor 4, a charging charger 5, and a transfer unit 14 for forming an image on a recording medium such as paper P, and an exhaust flow path forming an exhaust flow path for discharging gas such as air inside the device to the outside of the device. An image forming apparatus such as a printer 100 including an exhaust means such as a unit 200 is characterized in that the exhaust device according to the aspect 9 or 10 is provided as the exhaust means.
According to this, as described in the first embodiment, it is possible to realize an image forming apparatus capable of suppressing foreign matter inside the apparatus from flowing out to the outside of the apparatus.

１後側板
２給紙部
３現像装置
４感光体
５帯電チャージャ
６帯電部排気ダクト
７帯電部排気開口部
８定着部排気開口部
９定着部排気ダクト
１０排紙部
１０ａ排紙ローラ対
１１反転搬送部
１２中継搬送部
１３レジストローラ対
１４転写部
１５定着装置
１９定着部排気ファン
２０微粒子フィルタ
２１微粒子吸着部材
２２排熱上流側ダクト
２３帯電部排気ファン
２７気流ガイド板
２８ダクト屈曲部材
２８ｆ吸着部材貼付外壁面
２９屈曲部カバー
３０ヒートシンク
３１オゾンフィルタ
３２ヒートパイプ
３３排熱下流側ダクト
３４排気ダクト
３５排熱ダクト
３６断熱材
１００プリンタ
１１０流路カバー
１１１排気開口部
２００排気流路形成部
３０１放熱フィン
３５０排熱ダクト開口部
Ｆ１帯電部排気流路
Ｆ２定着部排気流路
Ｐ用紙 1 Rear plate 2 Feeding unit 3 Developing device 4 Photoreceptor 5 Charging charger 6 Charging part exhaust duct 7 Charging part exhaust opening 8 Fixing part exhaust opening 9 Fixing part exhaust duct 10 Paper discharging part 10a Paper discharging roller pair 11 Reverse transfer Part 12 Relay transport part 13 Resist roller pair 14 Transfer part 15 Fixing part 19 Fixing part Exhaust fan 20 Fine particle filter 21 Fine particle adsorption member 22 Exhaust heat upstream duct 23 Charging part Exhaust fan 27 Air flow guide plate 28 Duct bending member 28f Adhesion member Outer wall surface 29 Bending part cover 30 Heat sink 31 Ozone filter 32 Heat pipe 33 Exhaust heat downstream duct 34 Exhaust duct 35 Exhaust heat duct 36 Insulation material 100 Printer 110 Flow path cover 111 Exhaust opening 200 Exhaust flow path forming part 301 Heat dissipation fin 350 Exhaust heat duct opening F1 Charging part Exhaust flow path F2 Fixing part Exhaust flow path P Paper

特許第５８６１０６８号Patent No. 5861068

Claims

A flow path forming member that forms a gas flow path, and
In the flow path forming apparatus provided with the foreign matter collecting means attached to the inner surface of the flow path forming member.
A cooling means for cooling a portion of the flow path forming member to which the foreign matter collecting means is attached is provided .
The flow path forming member is an exhaust path forming member that forms an exhaust path for guiding the gas inside the device to the outside of the device.
It is configured to exhaust the gas near the heat source inside the image forming device to the outside.
The cooling means is characterized in that the exhaust gas from the image forming portion of the image forming apparatus to the outside of the image forming apparatus is applied to the outer surface of the portion of the exhaust path forming member to which the foreign matter collecting means is attached. Flow path forming device.

In the flow path forming apparatus of claim 1,
The cooling means is a flow path forming device having a configuration in which an air flow is applied to an outer surface of a portion of the flow path forming member to which the foreign matter collecting means is attached.

In the flow path forming apparatus of claim 2,
A flow path forming is provided on the outer surface between the flow path of the air flow to which the cooling means hits and the inside of the portion of the flow path forming member to which the foreign matter recovery means is not attached. Device.

In the flow path forming apparatus according to any one of claims 1 to 3, the flow path forming apparatus
As the cooling means, the flow path forming apparatus is provided with heat radiation fins on the outer surface of a portion of the flow path forming member to which the foreign matter collecting means is attached.

In the flow path forming apparatus of claim 4,
The flow path forming device is characterized in that the heat radiation fins are arranged in parallel with the flow of a fluid moving outside the flow path forming member.

In the flow path forming apparatus of claim 4,
The flow path forming device is characterized in that the heat radiation fins are arranged so as to be inclined with respect to a flow of a fluid moving outside the flow path forming member.

In the flow path forming apparatus according to any one of claims 1 to 6.
A flow path forming apparatus, wherein a portion of the flow path forming member to which the foreign matter collecting means is attached is made of a material having a higher thermal conductivity than a portion to which the foreign matter collecting means is not attached.

In the flow path forming apparatus according to any one of claims 1 to 7.
The foreign matter collecting means is a flow path forming device characterized in that it is removable with respect to the flow path forming member .

An image-forming means for forming an image on a recording medium,
In an image forming apparatus including an exhaust means for discharging gas inside the device to the outside of the device,
An image forming apparatus comprising the flow path forming apparatus according to any one of claims 1 to 8 as the exhaust means.