JPH0693138B2 - Electrostatographic device - Google Patents

Electrostatographic device

Info

Publication number
JPH0693138B2
JPH0693138B2 JP61013247A JP1324786A JPH0693138B2 JP H0693138 B2 JPH0693138 B2 JP H0693138B2 JP 61013247 A JP61013247 A JP 61013247A JP 1324786 A JP1324786 A JP 1324786A JP H0693138 B2 JPH0693138 B2 JP H0693138B2
Authority
JP
Japan
Prior art keywords
developing unit
upper frame
lower frame
photosensitive drum
frame
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.)
Expired - Lifetime
Application number
JP61013247A
Other languages
Japanese (ja)
Other versions
JPS62170979A (en
Inventor
治太郎 大場
Original Assignee
東京電気株式会社
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 東京電気株式会社 filed Critical 東京電気株式会社
Priority to JP61013247A priority Critical patent/JPH0693138B2/en
Priority to KR1019870000314A priority patent/KR920001973B1/en
Priority to US07/004,489 priority patent/US4760424A/en
Priority to EP87300498A priority patent/EP0232064B1/en
Priority to DE8787300498T priority patent/DE3774287D1/en
Publication of JPS62170979A publication Critical patent/JPS62170979A/en
Publication of JPH0693138B2 publication Critical patent/JPH0693138B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • G03G21/1642—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements for connecting the different parts of the apparatus
    • G03G21/1647—Mechanical connection means
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • G03G21/1604—Arrangement or disposition of the entire apparatus
    • G03G21/1623—Means to access the interior of the apparatus
    • G03G21/1628—Clamshell type
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/1639—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for the fixing unit
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/1651—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for connecting the different parts
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/1651—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for connecting the different parts
    • G03G2221/1654—Locks and means for positioning or alignment
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/1672—Paper handling
    • G03G2221/1675—Paper handling jam treatment
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/1678—Frame structures
    • G03G2221/1687—Frame structures using opening shell type machines, e.g. pivoting assemblies
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/18—Cartridge systems
    • G03G2221/183—Process cartridge
    • G03G2221/1853—Process cartridge having a submodular arrangement

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dry Development In Electrophotography (AREA)

Description

【発明の詳細な説明】 産業上の利用分野 この発明は、感光体の外周に形成された静電潜像を現像
し、この現像した画像を用紙等の媒体に転写する静電写
真装置に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrostatic photographic apparatus that develops an electrostatic latent image formed on the outer periphery of a photoconductor and transfers the developed image to a medium such as paper.

従来の技術 この種の静電写真装置における現像装置は、静電潜像が
形成される感光体の外周に、トナーにより静電潜像を顕
像化する現像部と、転写後の残存トナーを感光体の外周
から除去するクリーニング装置とを配置している。現像
装置を構成するこれらの感光体、現像部、クリーニング
機構は、個々に単独に組立られている。2. Description of the Related Art A developing device in this type of electrostatic photographic device includes a developing unit for developing an electrostatic latent image with toner and a residual toner after transfer on the outer periphery of a photoconductor on which an electrostatic latent image is formed. A cleaning device for removing from the outer periphery of the photoconductor is arranged. The photoconductor, the developing section, and the cleaning mechanism that constitute the developing device are individually assembled.

発明が解決しようとする問題点 一方、感光体、クリーニング機構、現像部は消耗品で交
換頻度も多い。しかし、上述のように感光体、現像部、
クリーニング機構を一つずつ分解しなければならない。
このような作業は他の多くの装着部品が邪魔になるため
メンテナンスの作業性がきわめて悪い。Problems to be Solved by the Invention On the other hand, the photoconductor, the cleaning mechanism, and the developing section are consumable items and are frequently replaced. However, as described above,
The cleaning mechanism must be disassembled one by one.
Since many other mounting parts interfere with such work, the workability of maintenance is extremely poor.

この発明はこのような点に鑑みなされたもので、現像装
置のメンテナンスを容易に行いうる静電写真装置を提供
することを目的とする。The present invention has been made in view of the above circumstances, and an object thereof is to provide an electrostatic photography apparatus capable of easily performing maintenance of a developing device.

問題点を解決するための手段 下部フレームに上部フレームを支点を中心に上下方向に
開閉自在及び任意位置固定自在に連結し、少なくとも感
光体と現像部とクリーニング機構とを保持体に装着して
なる現像ユニツトを設け、前記下部フレームに前記現像
ユニツトを位置決めして上下方向に着脱自在に保持する
上端開口のＵ字形の切欠により形成された支え部を設
け、前記上部フレームに前記現像ユニツトを弾発的に下
方へ押圧する押圧部を設けた。Means for Solving the Problems An upper frame is connected to a lower frame so as to be vertically openable and closable around a fulcrum and fixed at an arbitrary position, and at least a photoconductor, a developing unit and a cleaning mechanism are mounted on a holder. A developing unit is provided, and a supporting portion formed by a U-shaped cutout at an upper end opening for positioning the developing unit in the lower frame and holding the developing unit detachably in the vertical direction is provided, and the developing unit is elastically ejected to the upper frame. A pressing portion for pressing downward is provided.

作用 メンテナンスに際しては、下部フレームに対し上部フレ
ームを上方へ回動することにより、上端開口のＵ字形の
切欠により形成された支え部で支えられた現像ユニツト
を着脱することができ、これにより、現像ユニツトを下
部フレームから取り出して広い作業スペースで感光体、
クリーニング機構、現像部等の交換作業を行うことがで
きる。Function During maintenance, by rotating the upper frame upward with respect to the lower frame, the developing unit supported by the supporting portion formed by the U-shaped notch at the upper end opening can be attached and detached. Take the unit out of the lower frame and use
It is possible to replace the cleaning mechanism, the developing unit, and the like.

実施例 この発明の一実施例を図面に基づいて説明する。１は筐
体である。この筐体１は下部フレーム２と上部フレーム
３とを有し、これらの下部フレーム２と上部フレーム３
との後部は支軸４を支点として回動自在に連結されてい
る。また、下部フレーム２と上部フレーム３との前部に
は互いに系脱自在に係合するクランプ（図示せず）が取
付けられている。下部フレーム２の底部には多数の用紙
５を積層状態で収納するカセツトケース６が前方から着
脱自在に装着され、このカセツトケース６は用紙５をＵ
字形に方向変換する案内板７と手差トレイ８とを有して
いる。案内板７に対向して用紙５を案内する案内板９は
下部フレーム２に保持され、案内板９の後部に対向して
用紙５を案内する案内板10が上部フレーム３に保持され
ている。また、下部フレーム２には、カセツトケース６
内の用紙５を引出す給紙ローラ11と、後述する感光ドラ
ムに用紙５を搬送する送りローラ12,13と、転写チヤー
ジヤ14と、転写チヤージヤ14を通過した用紙５を定着装
置15に導く送りローラ16とが保持されている。定着装置
15は、下部フレーム２に着脱自在に保持された加圧ロー
ラ17と、上部フレーム３に保持された加熱駆動ローラ18
とよりなる。さらに、上部フレーム３には定着装置15を
通過した用紙５を導く案内板19と、用紙５を用紙受け20
に送る送りローラ21,22と、光源部23と、帯電チヤージ
ヤ24と、除電チヤージヤ25と、モータ26とが設けられて
いる。Embodiment An embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 is a housing. This housing 1 has a lower frame 2 and an upper frame 3, and these lower frame 2 and upper frame 3
The rear parts of and are rotatably connected with the support shaft 4 as a fulcrum. A clamp (not shown) is attached to the front portions of the lower frame 2 and the upper frame 3 so as to be detachably engaged with each other. A cassette case 6 for accommodating a large number of sheets 5 in a stacked state is detachably attached to the bottom of the lower frame 2 from the front side.
It has a guide plate 7 and a manual tray 8 for changing the direction of the character. A guide plate 9 that faces the guide plate 7 and guides the paper 5 is held by the lower frame 2, and a guide plate 10 that faces the rear portion of the guide plate 9 and guides the paper 5 is held by the upper frame 3. In addition, the lower frame 2 has a cassette case 6
A paper feed roller 11 for pulling out the paper 5 therein, feed rollers 12 and 13 for conveying the paper 5 to a photosensitive drum, which will be described later, a transfer charger 14, and a feed roller for guiding the paper 5 passing through the transfer charger 14 to a fixing device 15. 16 and are retained. Fixing device
Reference numeral 15 is a pressure roller 17 detachably held by the lower frame 2 and a heating drive roller 18 held by the upper frame 3.
And consists of. Further, the upper frame 3 has a guide plate 19 for guiding the sheet 5 having passed through the fixing device 15, and a sheet receiver 20 for receiving the sheet 5.
There are provided feed rollers 21 and 22, a light source unit 23, a charging charger 24, a discharging charger 25, and a motor 26.

ついで、現像ユニツト27が設けられている。この現像ユ
ニツト27は第４図及び第５図に示すように、クリーニン
グ機構28が保持された保持体29に、感光体である感光ド
ラム30と現像部31とを着脱自在に装着したものである。
クリーニング機構28は、トナー溜32に収容したスポンジ
ローラ33と、感光体30に接触するブレード34及びマイラ
35とよりなる。現像部31はトナー36を収納するトナーボ
ツクス37とマグネツトローラ38とよりなる。トナーボツ
クス37の両側には軸39が立設されている。保持体29の両
側には感光ドラム30の軸部40を回転自在に保持するＵ字
形の溝41が前方上がりに傾斜されて形成されているとと
もに、把手42の両側端に固定した腕43が固定されてい
る。これらの腕43には、トナーボツクス37の両側から突
出する軸39を下から位置決めして支えるＵ字形の引掛部
44と、外側に突出する突片45とが形成されている。Then, a developing unit 27 is provided. As shown in FIGS. 4 and 5, the developing unit 27 has a photosensitive drum 30 as a photosensitive member and a developing unit 31 which are detachably attached to a holder 29 holding a cleaning mechanism 28. .
The cleaning mechanism 28 includes a sponge roller 33 housed in the toner reservoir 32, a blade 34 and a mylar which come into contact with the photoconductor 30.
It consists of 35. The developing unit 31 is composed of a toner box 37 containing a toner 36 and a magnet roller 38. A shaft 39 is erected on both sides of the toner box 37. A U-shaped groove 41 for rotatably holding the shaft portion 40 of the photosensitive drum 30 is formed on both sides of the holding body 29 so as to be inclined forward and upward, and arms 43 fixed to both ends of a handle 42 are fixed. Has been done. On these arms 43, a U-shaped hooking portion that positions and supports a shaft 39 protruding from both sides of the toner box 37 from below.
44 and a protruding piece 45 protruding outward are formed.

さらに、保持体29の両側には、第４図に示すようにロー
ラ46を支承するレバー47が回動自在に保持されている。
これらのレバー47は弾発的に屈撓する弾性片48を有し、
この弾性片48を保持体29の一部49に当接することにより
下方へ付勢されている。そして、保持体29の前方側の両
側には突片50が形成され、これらの突片50にレバー51が
回動自在に取付けられている。これらのレバー51に一体
的に形成したフツク52には剥離テープ53の一端が保持さ
れ、この剥離テープ53の他端とレバー47とには発条54が
張設されている。レバー51の回動範囲は、第５図に示す
ように、感光ドラム30の軸部40を溝41から外すときに感
光ドラム30の外周の移動軌跡55に干渉する範囲を含むよ
うに定められている。その回動範囲を規制するために、
レバー51には突片50の縁に当接する当接面56,57が形成
されている。左右のローラ46は、第６図に示すように、
中央に位置して剥離テープ53に張力を付与する小径部46
aと、この小径部46aの両側に位置して前記送りローラ16
との間で用紙５を挾持する大径部46bとを有している。Further, as shown in FIG. 4, levers 47 for supporting the rollers 46 are rotatably held on both sides of the holding body 29.
These levers 47 have elastic pieces 48 that elastically bend,
By abutting this elastic piece 48 on a part 49 of the holding body 29, it is urged downward. Then, projecting pieces 50 are formed on both front sides of the holding body 29, and levers 51 are rotatably attached to these projecting pieces 50. A hook 52 integrally formed with these levers 51 holds one end of a peeling tape 53, and a spring 54 is stretched between the other end of the peeling tape 53 and the lever 47. As shown in FIG. 5, the rotation range of the lever 51 is determined so as to include a range that interferes with the movement trajectory 55 of the outer periphery of the photosensitive drum 30 when the shaft portion 40 of the photosensitive drum 30 is removed from the groove 41. There is. In order to regulate the rotation range,
The lever 51 is formed with contact surfaces 56 and 57 that contact the edges of the protrusion 50. The left and right rollers 46, as shown in FIG.
Small diameter part 46 located in the center and applying tension to the peeling tape 53
a and the feed roller 16 located on both sides of the small diameter portion 46a.
And a large-diameter portion 46b that holds the sheet 5 therebetween.

ついで、前記レバー47の取付構造を第７図に示す。保持
体29の底部両側から突出する突片58には、円孔59と外側
からこの円孔59に連通する切欠60とが形成されている。
そして、左右一対のレバー47を連結して円孔59に回動自
在に嵌合される軸61の外周に、すり割62が形成されてい
る。したがつて、すり割62の方向を切欠60に合わせて軸
61を円孔59に嵌合し、続いてレバー47を回動させること
により、切欠60からの軸61の抜止めがなされる。Next, the mounting structure of the lever 47 is shown in FIG. A circular hole 59 and a notch 60 communicating with the circular hole 59 from the outside are formed in the projecting piece 58 projecting from both sides of the bottom of the holding body 29.
A slit 62 is formed on the outer periphery of a shaft 61 that connects a pair of left and right levers 47 and is rotatably fitted into a circular hole 59. Therefore, align the direction of slot 62 with notch 60 and
By fitting 61 into the circular hole 59 and then rotating the lever 47, the shaft 61 is prevented from coming off the notch 60.

さらに、第１図、第２図、第３図に示すように、現像ユ
ニツト27を保持する支え部である上端開口のＵ字形の切
欠63,64,65が下部フレーム２の両側に形成されている。
切欠63はトナーボツクス37の両側から突出する軸39を位
置決めして支え、切欠64は感光ドラム30の軸部40を位置
決めして支え、切欠65は保持体29の両側から突出する軸
66を位置決めして支えている。Further, as shown in FIGS. 1, 2, and 3, U-shaped notches 63, 64, and 65 of the upper end opening which is a supporting portion for holding the developing unit 27 are formed on both sides of the lower frame 2. There is.
The notch 63 positions and supports the shaft 39 projecting from both sides of the toner box 37, the notch 64 positions and supports the shaft portion 40 of the photosensitive drum 30, and the notch 65 projects from both sides of the holding body 29.
Positions and supports 66.

上部フレーム３には、発条67に付勢されて感光ドラム30
の軸部40を下方へ押圧する押圧部である押圧レバー68が
軸69を支点に回動自在に保持され、また、トナーボツク
ス37を下方へ押圧する押圧部である圧縮発条70が設けら
れ、さらに、前記腕43に形成した突片45に係合する吊り
上げレバー71が発条72により付勢されて軸73により回動
自在に保持され、さらに吊り上げレバー71を押圧する操
作杆74が前後方向に摺動自在に保持されている。On the upper frame 3, the photosensitive drum 30 is urged by the spring 67.
A pressing lever 68, which is a pressing portion that presses the shaft portion 40 downward, is rotatably held around a shaft 69 as a fulcrum, and a compression spring 70 that is a pressing portion that presses the toner box 37 downward is provided. Further, a lifting lever 71 that engages with a protrusion 45 formed on the arm 43 is biased by a spring 72 and rotatably held by a shaft 73, and an operating rod 74 that presses the lifting lever 71 is moved in the front-back direction. It is held slidably.

なお、トナーボツクス37の一側には、軸39に支承された
ギヤ75と、ギヤ76と、マグネツトローラ38の端部に固定
したギヤ77とが設けられている。前記モータ26はギヤ7
5,76,77を介して回転をマグネツトローラ38に伝達する
とともに、前記給紙ローラ11、前記送りローラ12,16,22
及び前記加熱駆動ローラ18を駆動するものである。A gear 75 supported by the shaft 39, a gear 76, and a gear 77 fixed to the end of the magnet roller 38 are provided on one side of the toner box 37. The motor 26 has a gear 7
The rotation is transmitted to the magnet roller 38 via 5,76,77, and the paper feed roller 11 and the feed rollers 12,16,22 are also transmitted.
Also, the heating drive roller 18 is driven.

このような構成において、図示しない操作部を操作する
と感光ドラム30が一回転するとともに、この動作に同期
して用紙５が感光ドラム30の外周に供給される。感光ド
ラム30が一回転する過程で、帯電チヤージヤ24が感光ド
ラム30の外周に電位を帯電させ、この帯電層に光源部23
からのレーザー光線が走査されて静電潜像が形成され、
この静電潜像を現像部31が現像し、現像した画像を転写
チヤージヤ14が用紙５に転写し、クリーニング機構28が
感光ドラム30の外周に付着した残存トナーを除去し、除
電チヤージヤ25が感光ドラム30の外周の電位を除去す
る。転写された用紙５は送りローラ16とローラ46の大径
部46bとにより後方へ送られ、定着装置15により定着さ
れて用紙受け20に排出される。In such a configuration, when the operation unit (not shown) is operated, the photosensitive drum 30 rotates once, and the paper 5 is supplied to the outer periphery of the photosensitive drum 30 in synchronization with this operation. In the process in which the photosensitive drum 30 makes one rotation, the charging charger 24 charges the outer circumference of the photosensitive drum 30 with a potential, and the light source section 23 is charged on this charging layer.
The laser beam from is scanned to form an electrostatic latent image,
The electrostatic latent image is developed by the developing unit 31, the developed image is transferred to the sheet 5 by the transfer charger 14, the cleaning mechanism 28 removes the residual toner adhering to the outer periphery of the photosensitive drum 30, and the charge eliminating charger 25 exposes it. The potential on the outer periphery of the drum 30 is removed. The transferred sheet 5 is sent backward by the feed roller 16 and the large diameter portion 46b of the roller 46, fixed by the fixing device 15 and discharged to the sheet receiver 20.

この間、剥離テープ53は印字範囲外の両側で用紙５を感
光ドラム30から剥離する作用を示す。During this time, the peeling tape 53 has a function of peeling the paper 5 from the photosensitive drum 30 on both sides outside the printing range.

現像ユニツト27は消耗品で、一定の周期で交換するが、
そのときは、まず、前方から操作杆74を押圧し吊り上げ
レバー71を時計方向へ回動させ突片45から退避させる。
この状態で支軸４を支点として上部フレーム３を第１図
に示すように上方へ開放する。この状態では押えレバー
68も上方へ変位し、現像ユニツト27が切欠63,64,65に支
えられる。したがつて、把手42を持ち上げることにより
現像ユニツト27を外部の広いスペースに取り出し、この
位置で感光ドラム30や現像部31の交換を行う。The developing unit 27 is a consumable item and is replaced at regular intervals.
In that case, first, the operating rod 74 is pressed from the front to rotate the hoisting lever 71 clockwise to retract it from the projecting piece 45.
In this state, the upper frame 3 is opened upward as shown in FIG. In this state, the presser lever
68 is also displaced upward, and the developing unit 27 is supported by the notches 63, 64, 65. Therefore, the developing unit 27 is taken out to a large space outside by lifting the handle 42, and the photosensitive drum 30 and the developing unit 31 are exchanged at this position.

クリーニング機構28と感光ドラム30との寿命は略同じ
で、現像部31の寿命はそれよりも長い。実際にはクリー
ニング機構28が劣化したときは感光ドラム30も劣化し、
現像部31を外して保持体29とともに廃棄する。The cleaning mechanism 28 and the photosensitive drum 30 have substantially the same life, and the developing unit 31 has a longer life. Actually, when the cleaning mechanism 28 deteriorates, the photosensitive drum 30 also deteriorates,
The developing unit 31 is removed and discarded together with the holder 29.

現像部31は軸39を引掛部44から外すだけで分解され、感
光ドラム30は軸部40を溝41から抜くだけで分解される。
したがつて、感光ドラム30と現像部31とを、広い作業ス
ペースにおいて工具を用いることなくきわめて容易に着
脱することができる。なお、現像部31は軸39を支点とし
て回動しようとするが、マグネツトローラ38と感光ドラ
ム30との間隔を一定にするために、マグネツトローラ38
の端部に感光ドラム30の端部に接触するリング（図示せ
ず）が設けられているため実際には回動せずに安定す
る。そして、現像ユニツト27は切欠63,64,65により位置
決めされて支えられ押圧レバー68と圧縮発条70とにより
押圧されるため、筐体１への装着が安定しかつ装着作業
も容易である。The developing section 31 is disassembled simply by removing the shaft 39 from the hooking section 44, and the photosensitive drum 30 is disassembled only by removing the shaft section 40 from the groove 41.
Therefore, the photosensitive drum 30 and the developing section 31 can be attached and detached very easily in a large work space without using a tool. The developing unit 31 tries to rotate about the shaft 39 as a fulcrum, but in order to keep the gap between the magnet roller 38 and the photosensitive drum 30 constant, the magnet roller 38
Since a ring (not shown) that comes into contact with the end portion of the photosensitive drum 30 is provided at the end portion of the above, it is stable without actually rotating. Since the developing unit 27 is positioned and supported by the notches 63, 64, 65 and is pressed by the pressing lever 68 and the compression spring 70, the mounting on the housing 1 is stable and the mounting work is easy.

発明の効果 この発明は上述のように、下部フレームに上部フレーム
を支点を中心に上下方向に開閉自在及び任意位置固定自
在に連結し、少なくとも感光体と現像部とクリーニング
機構とを保持体に装着してなる現像ユニツトを設け、前
記下部フレームに前記現像ユニツトを位置決めして上下
方向に着脱自在に保持する上端開口のＵ字形の切欠によ
り形成された支え部を設け、前記上部フレームに前記現
像ユニツトを弾発的に下方へ押圧する押圧部を設けたの
で、メンテナンスに際しては、下部フレームに対し上部
フレームを上方へ回動することにより、上端開口のＵ字
形の切欠により形成された支え部で支えられた現像ユニ
ツトを着脱することができ、これにより、現像ユニツト
を下部フレームから取り出して広い作業スペースで感光
体、クリーニング機構、現像部等の交換作業を行うこと
ができると云う効果を有する。EFFECTS OF THE INVENTION As described above, according to the present invention, the upper frame is connected to the lower frame so as to be openable and closable in the vertical direction about the fulcrum and fixed at any position, and at least the photoconductor, the developing unit and the cleaning mechanism are mounted on the holder. And a supporting portion formed by a U-shaped cutout at an upper end opening for positioning the developing unit in the lower frame and holding the developing unit detachably in the vertical direction, and the developing unit in the upper frame. Since a pressing portion that elastically presses downward is provided, during maintenance, by rotating the upper frame upward with respect to the lower frame, the support portion formed by the U-shaped cutout at the upper end opening is supported. The developed developing unit can be attached and detached.This allows the developing unit to be taken out of the lower frame and used in a large work space to keep the photoreceptor and This has the effect that the leaning mechanism and the developing unit can be replaced.

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

図面はこの発明の一実施例を示すもので、第１図は上部
フレームを上方へ開放した状態を縮小して示す縦断側面
図、第２図は上部フレームを下方へ閉じた状態を縮小し
て示す縦断側面図、第３図は現像ユニツトの支持構造を
示す側面図、第４図は現像ユニツトを示す縦断側面図、
第５図は保持体から感光ドラムを外す状態を示す側面
図、第６図は剥離テープの保持構造を拡大して示す一部
の斜視図、第７図は剥離テープの後端を保持するレバー
の取付構造を拡大して示す一部の縦断側面図である。 ２……下部フレーム、３……上部フレーム、４……支軸
（支点）、27……現像ユニツト、28……クリーニング機
構、29……保持体、30……感光ドラム（感光体）、31…
…現像部、63〜65……切欠（支え部）、68……押圧レバ
ー（押圧部）、70……圧縮発条（押圧部）The drawings show an embodiment of the present invention. FIG. 1 is a vertical sectional side view showing a state in which an upper frame is opened upward, and FIG. 2 is a state in which an upper frame is closed downward. FIG. 3 is a vertical sectional side view showing the developing unit support structure, and FIG. 4 is a vertical sectional side view showing the developing unit.
FIG. 5 is a side view showing a state in which the photosensitive drum is removed from the holder, FIG. 6 is an enlarged perspective view of a part of the holding structure of the peeling tape, and FIG. 7 is a lever holding the rear end of the peeling tape. FIG. 3 is a partial vertical cross-sectional side view showing the mounting structure of FIG. 2 ... Lower frame, 3 ... Upper frame, 4 ... Support shaft (fulcrum), 27 ... Development unit, 28 ... Cleaning mechanism, 29 ... Holding member, 30 ... Photosensitive drum (photosensitive member), 31 …
… Developing part, 63-65 …… Notch (supporting part), 68 …… Pressing lever (pressing part), 70 …… Compression spring (pressing part)

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】下部フレームに上部フレームを支点を中心
に上下方向に開閉自在及び任意位置固定自在に連結し、
少なくとも感光体と現像部とクリーニング機構とを保持
体に装着してなる現像ユニツトを設け、前記下部フレー
ムに前記現像ユニツトを位置決めして上下方向に着脱自
在に保持する上端開口のＵ字形の切欠により形成された
支え部を設け、前記上部フレームに前記現像ユニツトを
弾発的に下方へ押圧する押圧部を設けたことを特徴とす
る静電写真装置。1. An upper frame is connected to a lower frame so as to be openable and closable in the vertical direction about a fulcrum and fixed at an arbitrary position,
A developing unit having at least a photoconductor, a developing unit and a cleaning mechanism mounted on a holder is provided, and a U-shaped notch at an upper opening for positioning the developing unit on the lower frame and detachably holding the developing unit in the vertical direction. An electrostatic photography apparatus comprising: a supporting portion formed on the upper frame; and a pressing portion for elastically pressing the developing unit downward on the upper frame. 【請求項２】下部フレームに上部フレームを支点を中心
に上下方向に開閉自在及び任意位置固定自在に連結し、
クリーニング機構を保持する保持体に少なくとも感光体
と現像部とを着脱自在に装着してなる現像ユニツトを設
け、前記下部フレームに前記現像ユニツトを位置決めし
て上下方向に着脱自在に保持する上端開口のＵ字形の切
欠により形成された支え部を設け、前記上部フレームに
前記現像ユニツトを弾発的に下方へ押圧する押圧部を設
けたことを特徴とする静電写真装置。2. An upper frame is connected to a lower frame so as to be vertically openable and closable about a fulcrum and fixed at an arbitrary position.
At least a photosensitive member and a developing unit are removably mounted on a holder for holding the cleaning mechanism, and a developing unit for positioning the developing unit on the lower frame is detachably held in the upper and lower direction. An electrostatographic apparatus, comprising: a supporting portion formed by a U-shaped cutout; and a pressing portion that elastically presses the developing unit downward in the upper frame.
JP61013247A 1986-01-24 1986-01-24 Electrostatographic device Expired - Lifetime JPH0693138B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP61013247A JPH0693138B2 (en) 1986-01-24 1986-01-24 Electrostatographic device
KR1019870000314A KR920001973B1 (en) 1986-01-24 1987-01-16 Electro static photographic apparatus
US07/004,489 US4760424A (en) 1986-01-24 1987-01-20 Multiply separable copier and developing apparatus
EP87300498A EP0232064B1 (en) 1986-01-24 1987-01-21 Electrostatic photographic apparatus
DE8787300498T DE3774287D1 (en) 1986-01-24 1987-01-21 ELECTROPHOTOGRAPHIC DEVICE.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61013247A JPH0693138B2 (en) 1986-01-24 1986-01-24 Electrostatographic device

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP61049400A Division JPH0693139B2 (en) 1986-03-06 1986-03-06 Electrostatographic device

Publications (2)

Publication Number Publication Date
JPS62170979A JPS62170979A (en) 1987-07-28
JPH0693138B2 true JPH0693138B2 (en) 1994-11-16

Family

ID=11827875

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61013247A Expired - Lifetime JPH0693138B2 (en) 1986-01-24 1986-01-24 Electrostatographic device

Country Status (1)

Country Link
JP (1) JPH0693138B2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0645971Y2 (en) * 1988-03-11 1994-11-24 東京電気株式会社 Electrophotographic device
JPH0633471Y2 (en) * 1988-05-24 1994-08-31 株式会社リコー Image forming device
JP2537559Y2 (en) * 1988-10-17 1997-06-04 旭光学工業株式会社 Image forming device
JP2549430B2 (en) * 1989-01-30 1996-10-30 株式会社テック Image forming device
JPH02199469A (en) * 1989-01-30 1990-08-07 Tokyo Electric Co Ltd Image forming device
JPH02199470A (en) * 1989-01-30 1990-08-07 Tokyo Electric Co Ltd Image forming device
US5204713A (en) * 1990-08-24 1993-04-20 Tokyo Electric Co., Ltd. Electrophotographic apparatus
JPH04110952A (en) * 1990-08-31 1992-04-13 Sharp Corp Electrophotographic device
KR100950492B1 (en) 2007-03-15 2010-03-31 삼성전자주식회사 Developing cartridge, an image forming apparatus having the same, and detaching method of the developing cartridge

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57154255A (en) * 1981-03-18 1982-09-24 Canon Inc Image forming apparatus
JPS5872159A (en) * 1981-10-23 1983-04-30 Canon Inc Image forming device and unit of this device
JPS592054A (en) * 1982-06-28 1984-01-07 Canon Inc Image forming device
JPS59211054A (en) * 1983-05-17 1984-11-29 Canon Inc Image forming device
JPS6281649A (en) * 1985-10-06 1987-04-15 Ricoh Co Ltd Image forming device
JPH0439668A (en) * 1990-06-05 1992-02-10 Konica Corp Electrostatic charge image developing toner

Also Published As

Publication number Publication date
JPS62170979A (en) 1987-07-28

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