JPH0138599Y2 - - Google Patents
Info
- Publication number
- JPH0138599Y2 JPH0138599Y2 JP12594083U JP12594083U JPH0138599Y2 JP H0138599 Y2 JPH0138599 Y2 JP H0138599Y2 JP 12594083 U JP12594083 U JP 12594083U JP 12594083 U JP12594083 U JP 12594083U JP H0138599 Y2 JPH0138599 Y2 JP H0138599Y2
- Authority
- JP
- Japan
- Prior art keywords
- image forming
- forming unit
- foamable resin
- thermally foamable
- photoconductor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000011347 resin Substances 0.000 claims description 13
- 229920005989 resin Polymers 0.000 claims description 13
- 238000005187 foaming Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 description 10
- 108091008695 photoreceptors Proteins 0.000 description 8
- 238000007789 sealing Methods 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
Landscapes
- Discharging, Photosensitive Material Shape In Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
Description
【考案の詳細な説明】
技術分野
本考案は、感光体及びその周囲に配設される複
数の複写エレメントを一体化し且つ複写機本体に
対して着脱可能とした作像ユニツトに関する。[Detailed Description of the Invention] Technical Field The present invention relates to an image forming unit that integrates a photoreceptor and a plurality of copying elements disposed around the photoreceptor and is detachable from a copying machine main body.
従来技術
近年、電子写真複写機においては、メインテナ
ンスの簡略化及び修理の迅速化を図るため、感光
体及びその周囲に配設される現像装置、クリーニ
ング装置等の作像に関与するエレメントを一体の
作像ユニツトとし、複写機本体に対して着脱可能
としたものが提案されている。これによると、感
光体回りの定期的な保守、点検及び修理時には、
上記作像ユニツトを交換するだけでよく、使用者
にとつては、複写機が使用できない時間が著しく
短縮され、またサービスマンにとつてもこの取り
外した作像ユニツトを回収して専門の工場内で再
使用可能に整備するか、廃棄すればよく、サービ
ス効率が向上する。PRIOR ART In recent years, in order to simplify maintenance and speed up repairs in electrophotographic copying machines, elements involved in image formation, such as the photoreceptor and the developing device and cleaning device disposed around it, have been integrated into one unit. An image forming unit that is detachable from the copying machine body has been proposed. According to this, during regular maintenance, inspection, and repair around the photoreceptor,
It is only necessary to replace the image forming unit mentioned above, which greatly reduces the amount of time the copying machine is unavailable for the user, and also allows the service person to collect the removed image forming unit and return it to a specialized factory. Either they can be made reusable or they can be disposed of, improving service efficiency.
ところが、上記作像ユニツトを構成する現像装
置及びクリーニング装置はその内部にトナーを収
容しているため、該作像ユニツトの取り外し時に
トナーが飛散し、複写機内、その周辺並びに作業
者の衣服等を汚していた。 However, since the developing device and cleaning device that make up the image forming unit contain toner inside, the toner scatters when the image forming unit is removed, damaging the inside of the copying machine, its surroundings, and the clothes of the workers. It was dirty.
目 的
本考案は、このような点に鑑みてなされたもの
で、その目的とするところは、取り外し時にトナ
ーの飛散することのない作像ユニツトを提共する
ことにある。Purpose The present invention has been made in view of the above points, and its purpose is to provide an image forming unit that does not cause toner to scatter when removed.
実施例
第１図は、本体に対して着脱可能な作像ユニツ
ト１を備えた複写機の概略構成を示すもので、図
中、２は原稿載置ガラスで、その上面には原稿を
押圧する原稿カバー３が設けられる一方、下面に
は原稿を走査する第１光学系４及び第２光学系５
が設けられ、走査された原稿像は投影レンズ６及
び固定の第３光学系７を介して作像ユニツト１内
の感光体ドラム８に投影されるよう構成されてい
る。Embodiment Fig. 1 shows a schematic configuration of a copying machine equipped with an image forming unit 1 that is detachable from the main body. A document cover 3 is provided, and a first optical system 4 and a second optical system 5 for scanning the document are provided on the bottom surface.
is provided, and the scanned original image is projected onto the photosensitive drum 8 in the image forming unit 1 via the projection lens 6 and the fixed third optical system 7.
一方、原稿載置ガラス２の上方には、給紙カセ
ツト９が傾斜して設けられている。該給紙カセツ
ト９内の転写紙が搬送される通路には、給紙ロー
ラ１０、レジストローラ１１、転写チヤージヤ１
２、ベルト分離装置１３、定着装置１４、排出ロ
ーラ１５並びに排出トレイ１６が順次設けられて
いる。 On the other hand, above the document placement glass 2, a paper feed cassette 9 is provided at an angle. The path through which the transfer paper in the paper feed cassette 9 is conveyed includes a paper feed roller 10, a registration roller 11, and a transfer charger 1.
2. A belt separating device 13, a fixing device 14, a discharge roller 15, and a discharge tray 16 are provided in this order.
作像ユニツト１は、感光体ドラム８を中心とし
て、大略、クリーニング装置１７、除電ランプ１
８に対向して設けられた除電スリツト１９、帯電
チヤージヤ２０、第３光学系７に対向して設けら
れた露光スリツト２１並びに現像装置２２とから
構成され、第２図に示すように一体的に複写機本
体から取り外し可能とされている。さらに、感光
体ドラム８に対面する現像装置２２のケーシング
開口２２ａの上部及び下部並びにクリーニング装
置１７のケーシング開口１７ａの上部にはシール
装置２３が設けられている。 The image forming unit 1 mainly includes a photosensitive drum 8, a cleaning device 17, and a static elimination lamp 1.
It is composed of a static elimination slit 19 provided opposite to the third optical system 7, a charging charger 20, an exposure slit 21 provided opposite to the third optical system 7, and a developing device 22, and as shown in FIG. It is said to be removable from the copy machine body. Furthermore, sealing devices 23 are provided at the upper and lower portions of the casing opening 22a of the developing device 22 facing the photosensitive drum 8 and at the upper portion of the casing opening 17a of the cleaning device 17.
上記シール装置２３は、第３図に示すように、
基部２４にヒータ２５が埋設されると共に熱発泡
性樹脂２６が感光体８と対面するよう隣接して設
けられている。 The sealing device 23, as shown in FIG.
A heater 25 is embedded in the base 24, and a thermally foamable resin 26 is provided adjacent to and facing the photoreceptor 8.
熱発泡性樹脂２６は、未発泡のシート状樹脂で
あり、加熱することによつて発泡して数倍乃至は
数十倍の厚さになると共に発泡時には接着性を有
するものである。 The heat-foamable resin 26 is an unfoamed sheet-like resin that foams by heating to become several to several tens of times thicker and has adhesive properties when foamed.
該熱発泡性樹脂２６の一例としては、ポリエチ
レン樹脂を主成分とする日東電気工業株式会社製
の発泡性接着シートがあり、これは、約200゜C2分
間の加熱によつて約10倍に発泡するものである。 An example of the thermally foamable resin 26 is a foamable adhesive sheet manufactured by Nitto Electric Industry Co., Ltd. whose main component is polyethylene resin. It is something to do.
一方、ヒータ２５は、図示しない電源に対し図
示しないスイツチを介して接続されており、該ス
イツチのオンによつて前記熱発泡性樹脂２６の発
泡温度になるように設定されている。 On the other hand, the heater 25 is connected to a power source (not shown) via a switch (not shown), and is set to reach the foaming temperature of the thermally foamable resin 26 when the switch is turned on.
上記構成において、複写機本体から作像ユニツ
ト１を取り外す場合、図示しないスイツチを閉じ
てシール装置２３のヒータ２５に通電を開始する
と、熱発泡性樹脂２６は発泡を始め、前記発泡性
接着シートの場合、約２分後には第２図に示すよ
うに、現像装置２２と感光体ドラム８との間隙を
塞いでしまう。該熱発泡性樹脂２６は、前述した
ように、その発泡時には接着性を有しており、感
光体ドラム８に密着して現像装置２２の内部と外
部を完全に遮断する。 In the above configuration, when the image forming unit 1 is removed from the copying machine main body, when a switch (not shown) is closed and electricity is started to be applied to the heater 25 of the sealing device 23, the thermally foamable resin 26 starts foaming, and the foamable adhesive sheet In this case, after about two minutes, the gap between the developing device 22 and the photosensitive drum 8 is closed, as shown in FIG. As described above, the thermally foamable resin 26 has adhesive properties when foamed, and adheres closely to the photoreceptor drum 8, completely blocking the inside and outside of the developing device 22.
一方、クリーニング装置１７においても同様に
熱発泡性樹脂２６が発泡して、クリーニング装置
１７と感光体ドラム８との上部間隙は塞がれる。
尚、クリーニング装置１７のケーシング開口１７
ａ下部においてはクリーニングブレード２７が感
光体ドラム８に圧接されているため、この部分に
は、シール装置２３を必要としない。 On the other hand, the thermally foamable resin 26 is similarly foamed in the cleaning device 17, and the upper gap between the cleaning device 17 and the photoreceptor drum 8 is closed.
Note that the casing opening 17 of the cleaning device 17
Since the cleaning blade 27 is in pressure contact with the photosensitive drum 8 in the lower part a, the sealing device 23 is not required in this part.
このように作像ユニツト１の取り外し時には、
現像装置２２及びクリーニング装置１７のトナー
収容空間が外部空間に対して完全に遮蔽され、ト
ナーの飛散が防止される。 In this way, when removing the image forming unit 1,
The toner storage spaces of the developing device 22 and the cleaning device 17 are completely shielded from the outside space, and toner scattering is prevented.
効 果
本考案に係る作像ユニツトは、感光体に面する
複写エレメントのケーシング開口に熱発泡性樹脂
と、該熱発泡性樹脂を発泡させる加熱手段とを備
えたものであるから、該作像ユニツトの取り出し
時にトナーの飛散を確実に防止することができ
る。Effects The image forming unit according to the present invention is equipped with a thermally foamable resin and a heating means for foaming the thermally foamable resin in the casing opening of the copying element facing the photoreceptor. It is possible to reliably prevent toner from scattering when the unit is taken out.
第１図は、本考案に係る作像ユニツトを備えた
複写機の概略構成を示す断面図、第２図は作像ユ
ニツトの取り外した状態の断面図並びに第３図は
シール装置の構成を示す断面図である。
１……作像ユニツト、８……感光体ドラム、１
７……クリーニング装置、２２……現像装置、２
３……シール装置、２４……基部、２５……ヒー
タ、２６……熱発泡性樹脂、１７ａ，２２ａ……
ケーシング開口。
FIG. 1 is a cross-sectional view showing a schematic configuration of a copying machine equipped with an image forming unit according to the present invention, FIG. 2 is a cross-sectional view with the image forming unit removed, and FIG. 3 is a view showing the structure of a sealing device. FIG. 1... Image forming unit, 8... Photosensitive drum, 1
7...Cleaning device, 22...Developing device, 2
3... Sealing device, 24... Base, 25... Heater, 26... Heat foamable resin, 17a, 22a...
Casing opening.
Claims (1)
現像剤を収容する複写エレメントとを含み且つ一
体的に複写機本体から着脱可能な作像ユニツトに
おいて、感光体に対面する前記複写エレメントの
ケーシング開口に、熱発泡性樹脂と、該熱発泡性
樹脂を発泡させる加熱手段とを備えたことを特徴
とする作像ユニツト。 In an image forming unit that includes a photoconductor and a copying element disposed around the photoconductor and containing a developer therein, and that is integrally detachable from a copying machine main body, a casing opening of the copying element that faces the photoconductor; An image forming unit comprising a thermally foamable resin and a heating means for foaming the thermally foamable resin.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12594083U JPS6033365U (en) | 1983-08-12 | 1983-08-12 | Image forming unit |
| US06/638,716 US4627716A (en) | 1983-08-12 | 1984-08-08 | Toner handling apparatus for electro-photographic copying machines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12594083U JPS6033365U (en) | 1983-08-12 | 1983-08-12 | Image forming unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6033365U JPS6033365U (en) | 1985-03-07 |
| JPH0138599Y2 true JPH0138599Y2 (en) | 1989-11-17 |
Family
ID=30286547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12594083U Granted JPS6033365U (en) | 1983-08-12 | 1983-08-12 | Image forming unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6033365U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH066355Y2 (en) * | 1986-09-22 | 1994-02-16 | キヤノン株式会社 | Process cartridge |
| JP5743581B2 (en) * | 2011-02-08 | 2015-07-01 | キヤノン株式会社 | Process cartridge and electrophotographic image forming apparatus |
-
1983
- 1983-08-12 JP JP12594083U patent/JPS6033365U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6033365U (en) | 1985-03-07 |
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