JPH04120556A - process cartridge - Google Patents

process cartridge

Info

Publication number
JPH04120556A
JPH04120556A JP2240045A JP24004590A JPH04120556A JP H04120556 A JPH04120556 A JP H04120556A JP 2240045 A JP2240045 A JP 2240045A JP 24004590 A JP24004590 A JP 24004590A JP H04120556 A JPH04120556 A JP H04120556A
Authority
JP
Japan
Prior art keywords
protective cover
process cartridge
main body
ozone
machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2240045A
Other languages
Japanese (ja)
Inventor
Yuji Yamanaka
祐二 山中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP2240045A priority Critical patent/JPH04120556A/en
Publication of JPH04120556A publication Critical patent/JPH04120556A/en
Pending legal-status Critical Current

Links

Landscapes

  • Electrophotography Configuration And Component (AREA)

Abstract

PURPOSE:To make air and ozone at the periphery of an image carrier smoothly flow toward the fan in a machine and to effective remove and discharge the ozone by closing a grip hole hermetically with a protection cover when the protection cover is closed. CONSTITUTION:When the process cartridge 1 is inserted into a device main body 2, the protective cover 10 is open without fail and the grip hole 9 is closed hermetically with the protective cover 10 to secure what is called fail-safe performance. Then the fan 17 in the machine is driven while the process cartridge 1 is mounted in the device main body 2 at a specific position to discharge the air in the machine. At this time, the grip hole 9 of the process cartridge 1 is closed hermetically with the protective cover 10. Therefore, the heated air at the periphery of the image carrier 4 and the ozone produced by the corona discharging of a primary electrostatic charger 6 flow in a smooth flow passage formed above the protective cover 10 to enter a duct 15. Consequently, the ozone which is produced in side is effectively removed and the temperature in the machine is prevented from rising.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、画像形成装置本体に対して着脱されるプロセ
スカートリッジに関する。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a process cartridge that can be attached to and removed from an image forming apparatus main body.

(従来の技術) 斯かるプロセスカートリッジには、第5図に示すように
持ち運び及び取扱いの便を考慮して把手108を設けた
ものか多くなってきている。
(Prior Art) As shown in FIG. 5, many of these process cartridges are equipped with a handle 108 for ease of carrying and handling.

(発明か解決しようとする課題) ところか、把手108か設けられた第5図に示すプロセ
スカートリッジ101においては、把手108の内側に
把手孔109か形成されるため、機内ファンによって機
内の空気を機外へ排出する際、機内の空気か把手孔10
9がら引かれ、このためプロセスカートリッジ101に
内蔵された像担持体104の周辺部からの吸気量か減り
プロセスカートリッジ101内に発生するオゾン等の除
去、プロセスカートリッジ101内の昇温防止か十分性
なわれ得ないという問題かあった。
(Problem to be solved by the invention) However, in the process cartridge 101 shown in FIG. 5 which is provided with a handle 108, since the handle hole 109 is formed inside the handle 108, the air inside the machine is removed by the in-machine fan. When discharging the air outside the machine, use the handle hole 10 to remove the air inside the machine.
Therefore, the amount of air taken in from the periphery of the image carrier 104 built into the process cartridge 101 is reduced, and the ozone etc. generated inside the process cartridge 101 are removed, and the temperature inside the process cartridge 101 is prevented from rising. There was a problem that I couldn't do it.

本発明は上記問題に鑑みてなされたちのて、その目的と
する処は、像担持体周辺の空気を機内ファンによって効
率的に吸引してこれを機外に排出し、内部に発生するオ
ゾンを効果的に除去し、且つ内部の昇温防止を図ること
かてきるプロセスカートリッジを提供することにある。
The present invention was made in view of the above problems, and its purpose is to efficiently suck the air around the image carrier using an internal fan and exhaust it to the outside of the machine, thereby eliminating ozone generated inside the machine. It is an object of the present invention to provide a process cartridge that can effectively remove liquids and prevent internal temperature rise.

(課題を解決するための手段) 上記目的を達成すべく本発明は、画像形成装置本体に対
して着脱され、これに内包された像担持体の露出部を保
護する開閉自在な保護カバーと把手を有し、該把手の内
側に把手孔か形成されるプロセスカートリッジにおいて
、前記保護カバーか開状態にあるときに該保護カバーか
前記把手孔を密閉するよう構成したことをその特徴とす
る。
(Means for Solving the Problems) In order to achieve the above object, the present invention provides a protective cover and a handle that can be detached from and attached to an image forming apparatus main body and that can be opened and closed to protect an exposed portion of an image carrier contained therein. In the process cartridge having a handle hole formed inside the handle, the process cartridge is characterized in that the protective cover seals the handle hole when the protective cover is in an open state.

(作用) 本発明によれば、プロセスカートリッジが画像形成装置
本体内に装着され、保護カバーか開状態にあるときには
、把手孔は保護カバーによって密閉されているため、像
担持体周辺の空気の把手孔を通過する流れか阻止され、
像担持体周辺の空気やオゾンは機内ファン側へスムーズ
に流れ、オゾンの除去、排気か効果的に行なわれ、プロ
セスカートリッジ内の温度上昇も抑えられる。
(Function) According to the present invention, when the process cartridge is installed in the main body of the image forming apparatus and the protective cover is in the open state, the handle hole is sealed by the protective cover, so that the air around the image carrier can be removed from the handle. flow through the hole is blocked,
Air and ozone around the image carrier flow smoothly to the in-machine fan, effectively removing and exhausting ozone, and also suppressing temperature rise inside the process cartridge.

(実施例) 以下に本発明の実施例を添付図面に基づいて説明する。(Example) Embodiments of the present invention will be described below based on the accompanying drawings.

第1図は画像形成装置のプロセスカートリ・ンシ周辺部
の縦断面図、第2図は保護カバーの斜視図である。
FIG. 1 is a longitudinal cross-sectional view of the periphery of a process cartridge of an image forming apparatus, and FIG. 2 is a perspective view of a protective cover.

第1図において、■は装置本体2内の光学台3の下方に
装着されたプロセスカートリ・ンシてあり、該プロセス
カートリッジ1は像担持体4、クリーナ5、−次帯電器
6及び現像器7を一体的に組み込んてユニットとして構
成され、これは装置本体2に対して着脱される。
In FIG. 1, ``■'' is a process cartridge installed below the optical bench 3 in the apparatus main body 2, and the process cartridge 1 includes an image carrier 4, a cleaner 5, a secondary charger 6, and a developer 7. are integrally assembled to form a unit, which can be attached to and detached from the device main body 2.

ところて、上記プロセスカートリッジ1の一端には従来
と同様に把手8か設けられており、これの内側には上下
方向に貫通する把手孔9か形成されている。そして、該
プロセスカートリ・ンシ1の上面には像担持体4の露出
部を保護するための保護カバー10か軸11を中心に回
動自在に枢着されており、該保護カバー10は軸11に
巻回されたばね12によって像担持体4の上方の開口部
13を閉しる方向(像担持体4の露出部を保護する方向
)に付勢されている。
Incidentally, a handle 8 is provided at one end of the process cartridge 1 as in the conventional case, and a handle hole 9 is formed inside the handle 8 to penetrate in the vertical direction. A protective cover 10 for protecting the exposed portion of the image carrier 4 is rotatably mounted on the upper surface of the process cartridge 1 about a shaft 11. A spring 12 wound around the image carrier 4 is biased in the direction of closing the upper opening 13 of the image carrier 4 (in the direction of protecting the exposed portion of the image carrier 4).

第2図に上記保護カバー10の詳細を示すか該保護カバ
ーlOの端部(自由端)には錐状の係合突起10aか全
幅に亘って形成されており前記把手8の上面にはこの係
合突起10aか係合すべき保合突起8aか幅方向(第1
図の紙面垂直方向)に形成されている。又、保護カバー
lOには三角柱状の誤挿入防止部材14か設けられてい
る(第2図参照)。
FIG. 2 shows the details of the protective cover 10. A conical engagement projection 10a is formed over the entire width at the end (free end) of the protective cover 10, and this The width direction (first
(in the direction perpendicular to the plane of the figure). Further, the protective cover IO is provided with a triangular prism-shaped erroneous insertion prevention member 14 (see FIG. 2).

一方、第1図に示すように装置本体2内のプロセスカー
トリッジ1の側方(第1図中、左方)にはその左右端か
開口するダクト15か設置されており、該ダクト15内
にはオゾンフィルター16及び機内ファン17か収納さ
れている。
On the other hand, as shown in FIG. 1, a duct 15 is installed on the side (left side in FIG. 1) of the process cartridge 1 inside the apparatus main body 2, and the duct 15 is open at the left and right ends. The ozone filter 16 and the in-flight fan 17 are housed inside.

而して、プロセスカートリッジ1か装置本体2内へ装着
される以前の段階ては、保護カバーlOはバネ12の付
勢力を受けて第1図に破線にて示すように開口部13を
閉じて像担持体4の露光部への外光の照射を遮断して像
担持体4の露光部を保護している。
Before the process cartridge 1 is installed into the apparatus main body 2, the protective cover 10 closes the opening 13 as shown by the broken line in FIG. 1 under the biasing force of the spring 12. The exposed portion of the image carrier 4 is protected by blocking the irradiation of external light to the exposed portion of the image carrier 4.

そして、プロセスカートリッジlを装置本体2に装着す
るに際しては、保護カバーlOは操作者によって開けら
れ、これは第1図に破線にて示す位置から実線にて示す
位置まて回動せしめられその端部の保合突起10aか把
手8の係合突起8aに係合されることによって当該保護
カバー10は第1図の実線位置に固定される。この状態
ては、保護カバーlOは開口部13を開放して像担持体
4の露出部を露出せしめるとともに、把手孔9を密閉す
る。
When installing the process cartridge l into the main body 2 of the apparatus, the protective cover lO is opened by the operator, rotated from the position shown in broken lines to the position shown in solid lines in FIG. The protective cover 10 is fixed at the position shown in solid line in FIG. 1 by being engaged with the retaining projection 10a of the handle 8 or the engaging projection 8a of the handle 8. In this state, the protective cover IO opens the opening 13 to expose the exposed portion of the image carrier 4, and seals the handle hole 9.

上記のようにして保護カバー10か開けられたプロセス
カートリッジlは装置本体2に開口する不図示のカート
リッジ挿入口から装置本体2の内部に挿入されるか、保
護カバーlOか閉じたままの状態でプロセスカートリッ
ジlを挿入しようとしても、保護カバー10に設けた前
記誤挿入防止部材14かカートリッジ挿入口と干渉して
プロセスカートリッジ1の装置本体2内への挿入か不可
能となる。つまり、プロセスカートリッジlを装置本体
2内に挿入するときには、必ず保護カバーIOか開状態
にあり1把手孔9は保護カバー10によって密閉されて
おり、当該プロセスカドリッジlの挿入には所謂フェイ
ルセーフ性か確保されている。
The process cartridge l with the protective cover 10 opened as described above is inserted into the apparatus main body 2 through the cartridge insertion opening (not shown) opened in the apparatus main body 2, or the process cartridge l is inserted into the apparatus main body 2 with the protective cover lO closed. Even if an attempt is made to insert the process cartridge 1, the erroneous insertion prevention member 14 provided on the protective cover 10 interferes with the cartridge insertion opening, making it impossible to insert the process cartridge 1 into the apparatus main body 2. In other words, when inserting the process cartridge l into the apparatus main body 2, the protective cover IO is always in the open state and the handle hole 9 is sealed by the protective cover 10. Sex is guaranteed.

而して、第1図に示すようにプロセスカートリッジ1か
装置本体2内の所定位置に装着された状態で画像形成装
置の画像形成動作が開始され、このとき機内ファン17
か駆動されて機内の空気か機外に排出されるか、本実施
例てはプロセスカートリッジ1の把手孔9は保護カバー
10によって密閉されているため、該把手孔9を通過す
るような第1図の破線矢印にて示す空気の流れか阻止さ
れ、像担持体4の周辺の熱せられた空気や一次帯電器6
でのコロナ放電によって発生したオゾンは第1図に実線
矢印にて示すように保護カバー10の上方に形成された
滑らかな流路をスムーズに流れてダクト15内に流入す
る。そして、ダクト15内に流入したオゾンはオゾンフ
ィルター16によって除去され、熱せられた空気はオゾ
ンフィルター16及び機内ファン17を通過して機外へ
排出されるため、フロセスカートリッジl内の温度上昇
か効果的に防かれる。
Then, as shown in FIG. 1, the image forming operation of the image forming apparatus is started with the process cartridge 1 installed at a predetermined position in the apparatus main body 2, and at this time, the internal fan 17
In this embodiment, since the handle hole 9 of the process cartridge 1 is sealed by the protective cover 10, the first air that passes through the handle hole 9 may be The air flow indicated by the broken line arrow in the figure is blocked, and the heated air around the image carrier 4 and the primary charger 6 are blocked.
The ozone generated by the corona discharge flows smoothly into the duct 15 through a smooth flow path formed above the protective cover 10, as shown by the solid arrow in FIG. Then, the ozone that has flowed into the duct 15 is removed by the ozone filter 16, and the heated air passes through the ozone filter 16 and the in-flight fan 17 and is discharged to the outside of the machine. effectively prevented.

次に、本発明の第2実施例を第3図及び第4図に基づい
て説明する。尚、第3図は画像形成装置のプロセスカー
トリッジ周辺部の縦断面図、第4図は保護カバーの斜視
図てあり、これらの図においては第1図及び第2図に示
したと同一要素には同一符号を付している。
Next, a second embodiment of the present invention will be described based on FIGS. 3 and 4. 3 is a longitudinal sectional view of the peripheral portion of the process cartridge of the image forming apparatus, and FIG. 4 is a perspective view of the protective cover. In these figures, the same elements as shown in FIGS. 1 and 2 are shown. The same symbols are attached.

本実施例ては、保護カバー10の一部に三角状のリブ1
8か突設されとおり、装置本体2のカートリッジ挿入口
(図示せず)にはりブガイド19か設けられている。
In this embodiment, a triangular rib 1 is formed on a part of the protective cover 10.
As shown in FIG. 8, a lever guide 19 is provided in the cartridge insertion opening (not shown) of the main body 2 of the apparatus.

而して、本実施例においても、プロセスカートリッジ1
を装置本体2内に挿入するときには保護カバーlOか開
けられるか、プロセスカートリッジ1を装置本体2内に
挿入していくと、保護カバー10に突設されたリフ18
かりブガイト19のテーバ面19aに係合して保護カバ
ー10か把手孔9を閉じる方向に押圧され、プロセスカ
ートリッジ1か装置本体2内の所定位置に装着された時
点て保護カバー10は第3図に実線にて示すように把手
孔9を完全に密閉する。
Therefore, in this embodiment as well, the process cartridge 1
When inserting the process cartridge 1 into the apparatus main body 2, the protective cover 10 can be opened, or when the process cartridge 1 is inserted into the apparatus main body 2, the rift 18 protruding from the protective cover 10 can be opened.
When the protective cover 10 is engaged with the tapered surface 19a of the cover guide 19 and is pressed in the direction of closing the handle hole 9, and is installed in the process cartridge 1 or the predetermined position in the apparatus main body 2, the protective cover 10 is as shown in FIG. The handle hole 9 is completely sealed as shown by the solid line.

従って、本実施例においても、プロセスカートリッジ1
か装置本体2内に装着されたときには、把手孔9か保護
カバー10によって密閉され把手孔9を通過する空気の
流れか阻止されるため、前記第1実施例にて得られたと
同様の効果か得られる。
Therefore, in this embodiment as well, the process cartridge 1
When the device is installed in the main body 2 of the device, the handle hole 9 or the protective cover 10 is sealed and air flow passing through the handle hole 9 is blocked, so that the same effect as that obtained in the first embodiment can be obtained. can get.

(発明の効果) 環上の説明で明らかな如く、本発明によれば、画像形成
装置本体に対して着脱され、これに内包された像担持体
の露出部を保護する開閉自在な保護カバーと、把手を有
し、該把手の内側に把手孔か形成されるプロセスカート
リッジにおいて、前記保護カバーか開状態にあるときに
該保護カバーか前記把手孔を密閉するよう構成したため
、像担持体周辺の空気の把手孔を通過する流れか阻止さ
れ、像担持体周辺の空気やオゾンは機内ファン側へスム
ーズに流れ、オゾンの除去、排気か効果的に行なわれ、
プロセスカートリッジ内の温度と昇も抑えられるという
効果か得られる。
(Effects of the Invention) As is clear from the above description, according to the present invention, there is provided a protective cover that is attachable to and detachable from the main body of the image forming apparatus and that can be opened and closed to protect the exposed portion of the image carrier contained therein. In the process cartridge having a handle and having a handle hole formed inside the handle, the protective cover seals the handle hole when the protective cover is in an open state, so that the area around the image carrier is The flow of air passing through the handle hole is blocked, and the air and ozone around the image carrier smoothly flow toward the in-machine fan, effectively removing and exhausting ozone.
This also has the effect of suppressing the temperature rise inside the process cartridge.

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

第1図は本発明の第1実施例に係る画像形成装置のプロ
セスカートリッジ川辺部の縦断面図。 第2図は第1実施例に係るプロセスカートリッジに備え
られる保護カバーの斜視図、第3図は本発明の第2実施
例に係る画像形成装置のプロセスカートリッジ周辺部の
縦断面図、第4図はW42実施例に係るプロセスカート
リ・ンシに備えられる保護カバーの斜視図、第5図は従
来のプロセスカートリッジの斜視図である。 1−・・プロセスカートリック、2・・・画像形成装置
本体、4・・・像担持体、8・・・把手、9・・・把手
孔、lO・・・保護カバー、14・・・誤挿入防止部材
。 特許出願人   キャノン株式会社
FIG. 1 is a longitudinal cross-sectional view of a process cartridge riverside portion of an image forming apparatus according to a first embodiment of the present invention. FIG. 2 is a perspective view of a protective cover provided in the process cartridge according to the first embodiment, FIG. 3 is a vertical cross-sectional view of the periphery of the process cartridge of the image forming apparatus according to the second embodiment of the present invention, and FIG. 5 is a perspective view of a protective cover provided in a process cartridge according to the W42 embodiment, and FIG. 5 is a perspective view of a conventional process cartridge. 1- Process cartridge, 2 Image forming apparatus main body, 4 Image carrier, 8 Handle, 9 Handle hole, lO Protective cover, 14 Incorrect Insertion prevention member. Patent applicant Canon Co., Ltd.

Claims (2)

【特許請求の範囲】[Claims] (1)画像形成装置本体に対して着脱され、これに内包
された像担持体の露出部を保護する開閉自在な保護カバ
ーと、把手を有し、該把手の内側に把手孔が形成される
プロセスカートリッジにおいて、前記保護カバーが開状
態にあるときに該保護カバーが前記把手孔を密閉するよ
う構成したことを特徴とするプロセスカートリッジ。
(1) The image forming apparatus has a protective cover that can be attached to and removed from the main body of the image forming apparatus and that can be opened and closed to protect the exposed portion of the image carrier contained therein, and a handle, with a handle hole formed inside the handle. A process cartridge, characterized in that the protective cover is configured to seal the handle hole when the protective cover is in an open state.
(2)前記保護カバーには、該保護カバーが開状態にあ
るときのみ当該プロセスカートリッジの画像形成装置本
体への挿入を許容する誤挿入防止部材が設けられている
ことを特徴とする請求項1記載のプロセスカートリッジ
(2) The protective cover is provided with an erroneous insertion prevention member that allows the process cartridge to be inserted into the main body of the image forming apparatus only when the protective cover is in an open state. Process cartridge as described.
JP2240045A 1990-09-12 1990-09-12 process cartridge Pending JPH04120556A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2240045A JPH04120556A (en) 1990-09-12 1990-09-12 process cartridge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2240045A JPH04120556A (en) 1990-09-12 1990-09-12 process cartridge

Publications (1)

Publication Number Publication Date
JPH04120556A true JPH04120556A (en) 1992-04-21

Family

ID=17053658

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2240045A Pending JPH04120556A (en) 1990-09-12 1990-09-12 process cartridge

Country Status (1)

Country Link
JP (1) JPH04120556A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7416824B2 (en) 2003-05-12 2008-08-26 Sharp Kabushiki Kaisha Organic photoconductive material electrophotographic photoreceptor and image forming apparatus using the same
US7512355B2 (en) 2004-10-25 2009-03-31 Sharp Kabushiki Kaisha Ozone exhaust system for image forming apparatus
US7625681B2 (en) 2005-06-01 2009-12-01 Sharp Kabushiki Kaisha Asymmetric bis-hydroxyenamine compound, electrophotographic photoreceptor and image forming apparatus
JP2010085516A (en) * 2008-09-30 2010-04-15 Kyocera Mita Corp Developing device and image forming apparatus with the same
DE102015122666A1 (en) 2015-02-19 2016-08-25 Denso Corporation Fuel injection control device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7416824B2 (en) 2003-05-12 2008-08-26 Sharp Kabushiki Kaisha Organic photoconductive material electrophotographic photoreceptor and image forming apparatus using the same
US7512355B2 (en) 2004-10-25 2009-03-31 Sharp Kabushiki Kaisha Ozone exhaust system for image forming apparatus
US7625681B2 (en) 2005-06-01 2009-12-01 Sharp Kabushiki Kaisha Asymmetric bis-hydroxyenamine compound, electrophotographic photoreceptor and image forming apparatus
JP2010085516A (en) * 2008-09-30 2010-04-15 Kyocera Mita Corp Developing device and image forming apparatus with the same
DE102015122666A1 (en) 2015-02-19 2016-08-25 Denso Corporation Fuel injection control device

Similar Documents

Publication Publication Date Title
JP7505066B2 (en) Image forming device
US5036844A (en) Cover assembly and pre-filter for a respirator
KR950019987A (en) Developer cartridge and its recycling method
JPH04120556A (en) process cartridge
KR890000137B1 (en) gas mask
JP2022020841A5 (en)
US20220338591A1 (en) Facial protection apparatus
US5414499A (en) Developing device for image forming apparatus having improved air/toner filtering
US5128110A (en) Ozone removing device for image forming equipment
EP1070993A2 (en) Toner supply system and toner cartridge
CN108697954A (en) Filter cell for vehicle
GB2070965A (en) Housing respiratory filters
KR102416625B1 (en) Walking-through booth with ambient air shut-off part
JP7837205B2 (en) Developing apparatus and image forming apparatus
KR20170122646A (en) Smoke mask
KR940011869B1 (en) Waste toner taking device
CN1062959C (en) Light-shielding boxes for cassettes
JP2946046B1 (en) Protective cap for fluid outlet
JP3633771B2 (en) Electrophotographic printer
EP0675393A2 (en) Photographic film packet and light locking element
JP5229302B2 (en) Game machine board case
GB1574852A (en) Casette for roll film
JPH02272464A (en) Photosensitive drum cover
KR20060119368A (en) Air passage device for air conditioner with filter part
JP4071747B2 (en) Control board storage case for gaming machine