JPS60120385A - Supporting device for image carrier belt - Google Patents

Supporting device for image carrier belt

Info

Publication number
JPS60120385A
JPS60120385A JP22868783A JP22868783A JPS60120385A JP S60120385 A JPS60120385 A JP S60120385A JP 22868783 A JP22868783 A JP 22868783A JP 22868783 A JP22868783 A JP 22868783A JP S60120385 A JPS60120385 A JP S60120385A
Authority
JP
Japan
Prior art keywords
image
photoreceptor
belt
internal
toner
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
JP22868783A
Other languages
Japanese (ja)
Inventor
Kazuyoshi Chiku
知久 一佳
Haruo Kadoi
角井 治夫
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 JP22868783A priority Critical patent/JPS60120385A/en
Publication of JPS60120385A publication Critical patent/JPS60120385A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00Apparatus for electrographic processes using a charge pattern
    • G03G15/75Details relating to xerographic drum, band or plate, e.g. replacing, testing
    • G03G15/754Details relating to xerographic drum, band or plate, e.g. replacing, testing relating to band, e.g. tensioning

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Discharging, Photosensitive Material Shape In Electrophotography (AREA)

Abstract

PURPOSE:To prevent toner from scattering by preventing oscillations of a beltlike photosensitive body by plural support rollers and a contat member. CONSTITUTION:A front cover 15, internal upper cover 16, internal rear cover 17, and internal lower cover 18 are arranged for a photosensitive body 8 between rollers 4 and 7 opposite the internal surface of a plane part. The internal front cover 15 covers the photosensitive body 8 to the overall width of the internal surface. The respective internal covers 15-18 are provided with a shield member 20 of ''Teflon'' felt, etc., which is flexible and constitutes the contact member having high wear resistance upon occasion by adhesion at positions facing both end parts of the internal surface of the image carrier belt 8, and this shield member 20 contacts the circumference of the internal side end part of the image carrier belt 8 lightly.

Description

【発明の詳細な説明】 本発明は例えば電子計算機5画像読取り装置等から演算
出力ないし読取り出力される電気信号化された画像情報
を、又は電子写真法を用いて得られる原稿像に対応した
潜像をトナー画像として無端ベルト上像担持体上に担持
し、そのまま再現表示する画像表示装置、あるいは上記
ベルト上に可視化した画像を更に転写紙等に転写する機
能を有する複写機等の画像形成装置の像担持ベルト支持
装置に関する。一般に上記の如き無端状の像担持ベルト
を有する画像表示装置や画像形成装置はとの像担持ベル
トを複数本のローラに架設して回動させるという構造を
有する。この様な像担持ベルトは、トナーをその表面に
付着して装置本体内を回動するため、像担持ベルト上の
トナーが装置内部に飛散し易い構造となっている。この
ようなトナーの飛散が装置本体内で発生すると装置内部
の各所がトナーで汚染され様々な問題を発生する。
DETAILED DESCRIPTION OF THE INVENTION The present invention provides image information converted into electrical signals that is output from a computer, image reading device, etc., or a latent image corresponding to an original image obtained using electrophotography. An image display device that carries an image as a toner image on an image carrier on an endless belt and reproduces it as it is, or an image forming device such as a copying machine that has the function of further transferring the image visualized on the belt to a transfer paper or the like. The present invention relates to an image carrying belt supporting device. Generally, an image display device or an image forming device having an endless image carrying belt as described above has a structure in which the image carrying belt is mounted on a plurality of rollers and rotated. Such an image carrying belt has toner attached to its surface and rotates within the main body of the apparatus, so that the toner on the image carrying belt is easily scattered inside the apparatus. When such scattering of toner occurs within the apparatus main body, various parts inside the apparatus are contaminated with toner, causing various problems.

例えば、レンズ等の光学部品にトナーが付着した場合は
、装置本来の機能に致命的な影響を及ぼし、また、トナ
ーが導電性を有する場合には電気部品等の上に飛散し短
絡等の事故を発生する。さらに機構部等にトナーが入り
込むと、正常な機能が果せなくなったりする。この様に
トナーは粉体であり、複雑な機構部の奥深くまで進入し
、一旦奥深くまで入り込んだトナーを清掃するのは容易
ではない。
For example, if toner adheres to optical parts such as lenses, it will have a fatal effect on the original functions of the device, and if toner is conductive, it will scatter onto electrical parts, causing accidents such as short circuits. occurs. Furthermore, if toner gets into the mechanical parts, it may no longer function normally. As described above, toner is a powder, and it penetrates deep into complex mechanical parts, and once it has penetrated deep, it is not easy to clean it.

特に上記の如く像担持ベルトを用いる装置においては、
トナーがベルト裏面に付着してしまうとベルトの裏面は
ローラと当接する面であるため、トナーがローラとベル
ト間にはさまれ、ローラ表面やベルト裏面に固着し像担
持ベルトを傷めたりする。更に像担持ベルト裏面にトナ
ーが付着した状態でベルトの回動を続けると、無端状の
像担持ベルトに囲まれた空間内でトナーが舞い上り、こ
の空間内の各部に上記の問題を発生させる。一般に像担
持ベルトの内面はベルトを装置から取りはずさなければ
清掃し難く清掃作業が困難である。
Particularly in devices using an image bearing belt as described above,
If the toner adheres to the back surface of the belt, since the back surface of the belt is the surface that comes into contact with the roller, the toner will be caught between the roller and the belt and adhere to the roller surface or the back surface of the belt, damaging the image bearing belt. Furthermore, if the belt continues to rotate with toner adhered to the back surface of the image carrying belt, the toner will fly up in the space surrounded by the endless image carrying belt, causing the above-mentioned problems in various parts of this space. . Generally, the inner surface of the image bearing belt is difficult to clean unless the belt is removed from the apparatus, making cleaning work difficult.

また、像担持ベルトは前記の如く複数本のローラによっ
て懸回支持されているため、ローラ間に張架された部分
は振動し易い。この振動はベルトを表示装置に使用する
場合は、表示部において画像を見にくくするばかりでな
く、ベルト上に付着しているトナーを飛散させる大きな
原因の一つとなっている。
Further, since the image carrying belt is suspended and supported by a plurality of rollers as described above, the portion stretched between the rollers is likely to vibrate. When the belt is used in a display device, this vibration not only makes it difficult to see images on the display unit, but also becomes one of the major causes of scattering the toner adhering to the belt.

本発明の目的は以上の点に鑑み、像担持ベルトで囲まれ
た空間内をトナーの飛散より防止することを主たる目的
とするものである。また本発明の他の目的はベルトの振
動を防止し、トナーの飛散が発生し難い像担持ベルト懸
回支持装置を提供することにある。
In view of the above points, the main object of the present invention is to prevent toner from scattering in a space surrounded by an image carrying belt. Another object of the present invention is to provide an image bearing belt suspension and support device that prevents belt vibration and prevents toner from scattering.

上記目的を達成する本発明の像担持ベルト支持装置は、
トナー像を外側表面に担持して無端移動する像担持ベル
トを張架支持する複数の支持ローラと、ローラ間に設け
られ上記像担持ベルトの内側表面の両側側部に接触する
接触部材とを有する。
The image bearing belt support device of the present invention that achieves the above object includes:
It has a plurality of support rollers that tension and support an endlessly moving image carrying belt carrying a toner image on its outer surface, and a contact member that is provided between the rollers and contacts both sides of the inner surface of the image carrying belt. .

以下、本発明を一実施例に従って説明する。Hereinafter, the present invention will be explained according to one embodiment.

第1図は本発明を適用した画像表示装置の外観図を示し
、第2図はその一部斜視断面図であり、更に第3図は同
側断面図である。
FIG. 1 shows an external view of an image display device to which the present invention is applied, FIG. 2 is a partially perspective sectional view thereof, and FIG. 3 is a side sectional view thereof.

図において1は外装カバー、2は外装カバーの前面に設
けられた透明の表示ガラス、3はカバーの前面突出部に
設けられた操作パネルで、画像情報の呼び出し、表示装
置の指示等の画像処理を行なう。
In the figure, 1 is an exterior cover, 2 is a transparent display glass provided on the front of the exterior cover, and 3 is an operation panel provided on the front protrusion of the cover, which performs image processing such as calling up image information and giving instructions to the display device. Do the following.

外装カバー1の内部には画像形成部が内蔵されている。An image forming section is built inside the exterior cover 1.

この画像形成部は、駆動ローラ4、支持ローラ5,6.
7これらのローラにより張架された像担持体であるベル
ト伏感光体8、この感光体8の内部・に設けられた半導
体レーザ発振器9、レーザの走査装置であるスキャナー
10、fθレンズ11、ミラー12などの潜像書き込み
のだめの光学系、及び露光部で感光体8の外部に設けら
れた現像器13等により構成されている。
This image forming section includes a drive roller 4, support rollers 5, 6 .
7 A belt-backed photoconductor 8 which is an image carrier stretched by these rollers, a semiconductor laser oscillator 9 provided inside the photoconductor 8, a scanner 10 which is a laser scanning device, an fθ lens 11, and a mirror. 12 for writing the latent image, and a developing device 13 provided outside the photoreceptor 8 in the exposure section.

駆動ローラ4の後端軸にはモータ(不図示)が連結され
、ベルト伏感光体8の搬送を行なう。
A motor (not shown) is connected to the rear end shaft of the drive roller 4, and conveys the belt-covered photoreceptor 8.

また支持ロー25,6.7のうち少なくとも一本(図示
の例では支持ロー25が好ましい)は、その径方向移動
可能で、かつばねなどにより感光体8に所定の張力を付
与して波打ち、たるみ及び感光体8と駆動ローラ4のス
リップなどを防止するためのテンションを4えるように
構成している。
Further, at least one of the support rows 25, 6.7 (the support row 25 is preferable in the illustrated example) is movable in the radial direction, and applies a predetermined tension to the photoreceptor 8 using a spring or the like to cause it to wave. It is configured to provide a tension of 4 to prevent sagging and slipping between the photoreceptor 8 and the drive roller 4.

なお、上記ベルト伏感光体8は、例えば透明なポリエス
テルシートの片面(本例の構成では張設軌道の外側面)
に、導電性金属を極く薄く蒸着し、更にその表面にCd
S等の感光物質を塗布することによって形成されるもの
である。
The belt-backed photoreceptor 8 is, for example, one side of a transparent polyester sheet (in the configuration of this example, the outer side of the stretched track).
A conductive metal is deposited very thinly on the surface, and Cd is then deposited on the surface.
It is formed by applying a photosensitive material such as S.

またミラー12を径て感光体8に照射されたレーザ光に
よりベルト伏感光体8に潜像を形成する露光部には、こ
の無光部の感光体8の内面に接するように、支持ローラ
6.7の共通接線より若干突出した位置に、保護ガラス
14を設けてあり、この保護ガラス14は現像器13の
現像ブラシ(マグネットにより形成される現像剤のブラ
シ伏の穂立)の接触により引き起される感光体8の上下
振動を防止し、露光位置を一定に保持して解像力を向上
させるためのものであるO 以上の構成において、半導体レーザ発振器9から画像電
気信号により変調されたレーザ光が出ると、とのレーザ
光はスキャナー10、fθレンズ11、ミラー12を経
て露光部の感光体8に照射され、この感光体8の走行回
動に伴なって所定の画像が現像器13によって顕画され
る。
Further, in the exposure area where a latent image is formed on the photoreceptor 8 by the laser beam irradiated onto the photoreceptor 8 through the mirror 12, a support roller 6 is placed in contact with the inner surface of the photoreceptor 8 in the non-light area. A protective glass 14 is provided at a position slightly protruding from the common tangent line of . This is to prevent the vertical vibration of the photoconductor 8 caused by the vibration, maintain the exposure position constant, and improve the resolution. When the laser beam is emitted, the laser beam passes through the scanner 10, the fθ lens 11, and the mirror 12, and is irradiated onto the photoreceptor 8 in the exposure section. It is visualized.

ベルト状感光体8の外周面に形成された画像は、感光体
8が矢印A方向に移動するのに伴ない表示ガラスに対向
する位置まで運ばれ、一時的に停止して表示に供される
。その後、表示を終了した画像は感光体8の移動により
再び露光部に送られ、現像ブラシでクリーニングを受け
た直後に改めて露光、現像の各プロセスを経て新しい画
像が形成される0 上記画像表示装置における像形成プロセスは、本願出願
人による特開昭58−98746号公報又は特開昭58
−98748号公報及び特願昭57−151278号の
出願に開示されたものを使用でき、ここでは説明を省略
する。
As the photoreceptor 8 moves in the direction of arrow A, the image formed on the outer peripheral surface of the belt-shaped photoreceptor 8 is carried to a position facing the display glass, and is temporarily stopped for display. . Thereafter, the image that has finished displaying is sent to the exposure section again by the movement of the photoreceptor 8, and immediately after being cleaned by a developing brush, a new image is formed through the processes of exposure and development.0 The above-mentioned image display device The image forming process in JP-A No. 58-98746 or JP-A-Sho 58 by the applicant of the present application is
Those disclosed in Japanese Patent Application No. 57-151278 and Japanese Patent Application No. 57-151278 can be used, and their explanation will be omitted here.

以上の構成を持つ装置に適用する本発明の像担持ベルト
支持装置において用いた像担持を第4図および第5図を
用いて説明する。
The image carrier used in the image carrier belt support device of the present invention applied to the apparatus having the above configuration will be explained with reference to FIGS. 4 and 5.

第4図は像担持ベルトである感光体8周辺の断面側視図
であり、第5図はローラ4および7近傍の斜視図である
。図において感光体8に対して、各ローラ4,5,6.
7間に渡り平面な部分の内面と対向する位置にそれぞれ
前内カバー15.上内カバー16.後内カバー17およ
び下内カバー18が配置されている。そして、例えば前
内カバー15は、第5図に示す如く感光体8の内面全幅
を覆っており、その側部は図示せぬ両側の側板に固定さ
れている。他の内カバー16.17.18も前内カバー
15と同様に側板間に渡り固定されている。また下内カ
バー18にはレーザ光りの光路上にスリット19が第4
図の紙面と垂直方向に開口している。そして、更に各内
カバー15.16,17.18は例えばテフロンフェル
ト等の柔軟性が有り、且つ高い耐摩耗性を必要に応じて
有する本発明の接触部材を構成するシールド部材20が
像担持ベルト8の内面両側端部に対向する位置に接着さ
れており、このシールド部材20は、像担持ベルト8の
内面側端部近傍と軽く接触しているO 上記の構成を有する画像表示装置においては、感光体8
が目−ラ4,5,6,7に接していない部分のほとんど
がシールド部20に接している。このため各ローラ4,
5,6.7間を渡る部分の振動はほとんど発生しなくな
シ、感光体8の振動によるトナー飛散もほとんど生じな
くなった。また、感光体8の内面両側部はシールド部材
20に接触し、さらにこの感光体の外側には図示せぬ側
板の位置まで各内カバーがあるため、トナーが感光体8
の側部からこの感光体の裏面に回り込む量が著しく減少
し感光体8に囲まれた内部空間へのトナー飛散量が大幅
に少なくなった。その結果、上記スキャナー10゜fθ
レンズ11およびミラー12等の光学系にはほとんどト
ナーの付着が生じなくなった。そして更に感光体8はシ
ールド部材20に接しているために画像を表示する部分
21の感光体の平面性が向上し、画像が見やすくなると
いう効果が生ずる。
FIG. 4 is a cross-sectional side view of the vicinity of the photoreceptor 8, which is an image bearing belt, and FIG. 5 is a perspective view of the vicinity of the rollers 4 and 7. In the figure, each roller 4, 5, 6 .
A front inner cover 15. is located at a position facing the inner surface of the flat portion between 7 and 15. Upper inner cover 16. A rear inner cover 17 and a lower inner cover 18 are arranged. For example, the front inner cover 15 covers the entire inner width of the photoreceptor 8 as shown in FIG. 5, and its side portions are fixed to both side plates (not shown). The other inner covers 16, 17, and 18 are also fixed across the side plates in the same way as the front inner cover 15. In addition, the lower inner cover 18 has a fourth slit 19 on the optical path of the laser beam.
The opening is perpendicular to the plane of the figure. Furthermore, each of the inner covers 15, 16, 17, 18 is made of flexible material such as Teflon felt, and has high abrasion resistance as required. The shield member 20 is attached to a position opposite to both ends of the inner surface of the image carrying belt 8, and this shield member 20 is in light contact with the vicinity of the inner end of the image carrying belt 8. Photoreceptor 8
Most of the portions that are not in contact with the eyelets 4, 5, 6, and 7 are in contact with the shield portion 20. For this reason, each roller 4,
Vibration in the area between 5 and 6.7 almost no longer occurs, and toner scattering due to vibration of the photoreceptor 8 also almost no longer occurs. Further, since both sides of the inner surface of the photoconductor 8 are in contact with the shield member 20, and furthermore, there are inner covers on the outside of the photoconductor up to the position of the side plates (not shown), so that toner is transferred to the photoconductor 8.
The amount of toner that wraps around the back side of the photoreceptor 8 from the sides of the photoreceptor 8 is significantly reduced, and the amount of toner scattered into the internal space surrounded by the photoreceptor 8 is significantly reduced. As a result, the above scanner 10°fθ
Almost no toner adhered to the optical system such as the lens 11 and mirror 12. Further, since the photoreceptor 8 is in contact with the shield member 20, the flatness of the photoreceptor in the image displaying portion 21 is improved, resulting in the effect that the image is easier to see.

第6図は本発明の接触部材であるシールド部材の他実施
例の一部破断斜視図である。
FIG. 6 is a partially cutaway perspective view of another embodiment of the shield member which is the contact member of the present invention.

上記実施例においては、シールド部材20としてフェル
トを用いたが他に第6図(a)に示すシールド部材20
&の如き帯膜22の表面に柔らかい合成毛23を植毛し
た部材を用い、この毛23に感光体8の内面を接触させ
る。
In the above embodiment, felt was used as the shield member 20, but in addition, the shield member 20 shown in FIG.
A member having soft synthetic bristles 23 planted on the surface of the band film 22 such as & is used, and the inner surface of the photoreceptor 8 is brought into contact with the bristles 23.

第6図(b)はシールド部材20bとしてフェルトやウ
レタン等の柔軟性部材、あるいはゴム等□の弾性部材2
4の表面に耐摩耗性の良好な例えばテフロンテープ等の
保護部材25を接着し、この保護部材25に感光体8の
内面に接触させても上記と同様の効果が得られた。
FIG. 6(b) shows a flexible member such as felt or urethane, or an elastic member 2 such as rubber as the shield member 20b.
The same effect as described above was also obtained by adhering a protective member 25 having good abrasion resistance, such as Teflon tape, to the surface of photoreceptor 4 and bringing this protective member 25 into contact with the inner surface of photoreceptor 8.

第1図は本発明の接触部材の更に他の実施例でシールド
部材20cの一部破断斜視図である。
FIG. 1 is a partially cutaway perspective view of a shield member 20c in still another embodiment of the contact member of the present invention.

本実施例ではシールド部材20cをウレタンゴムやモル
トプレーン等の弾性部材、あるいはテフロンやポリアセ
タール等の低摩擦部材で構成し、感光体8の内面と接触
する側の面26には複数個の溝27を設けたものである
。この溝27はシールド部材20cと感光体8の接触面
から侵入するトナーを上記面26の突起部で停止させた
り、あるいは掻き落とし捕獲する効果を有する。従って
、溝27の数は多いいほどトナーの捕獲効果は上がる。
In this embodiment, the shield member 20c is made of an elastic member such as urethane rubber or Moltoprene, or a low-friction member such as Teflon or polyacetal, and a plurality of grooves 27 are formed on the surface 26 that contacts the inner surface of the photoreceptor 8. It has been established. This groove 27 has the effect of stopping toner entering from the contact surface between the shield member 20c and the photoreceptor 8 at the protrusion of the surface 26, or scraping and capturing the toner. Therefore, the greater the number of grooves 27, the better the toner trapping effect.

この溝27で捕獲されたトナーは、感光体8を交換する
際に清掃することで再び溝27の捕獲効果は復活する。
By cleaning the toner captured in the groove 27 when the photoreceptor 8 is replaced, the trapping effect of the groove 27 is restored again.

第7図の実施例では溝27の表面は感光体に対して面接
触するが、この溝の形状としては感光体8の進行方向に
対して平行な波形断面又は三角形の断面として線接触さ
せても同様の効果を得ることができる。
In the embodiment shown in FIG. 7, the surface of the groove 27 is in surface contact with the photoreceptor, but the shape of the groove is a wave-shaped cross section or a triangular cross section parallel to the traveling direction of the photoreceptor 8, and the surface is in line contact with the photoreceptor. You can also get the same effect.

第8図は本発明の接触部材の更に他の実施例を示す部分
断面による斜視図で、シールド部材20dの表面28に
感光体8の端部8aに対向して進行方向Sに対して正の
傾斜を有する溝29を設けたものである。この溝29の
一端又は両端(図示せず)は閉じられている。溝29の
第1の役割は感光体の内側に侵入するトナーを捕獲する
ことである。そして第2の役割は表面28に接触してい
る感光体8の質点Pに対して溝29の傾斜方向に沿った
摩擦力Fを作用させ、このFの水平分力F、により感光
体8の平面性を向上させると同時に感光体の振動をも防
止するのである。
FIG. 8 is a partially cross-sectional perspective view showing still another embodiment of the contact member of the present invention, in which a surface 28 of the shield member 20d is provided with a positive polarity with respect to the traveling direction S, facing the end 8a of the photoreceptor 8. A groove 29 having an inclination is provided. One or both ends (not shown) of this groove 29 are closed. The primary role of grooves 29 is to trap toner that enters the inside of the photoreceptor. The second role is to apply a frictional force F along the inclination direction of the groove 29 to the mass point P of the photoconductor 8 that is in contact with the surface 28, and by the horizontal component F of this F, the photoconductor 8 is This improves flatness and at the same time prevents vibration of the photoreceptor.

従って、溝29の特性は感光体の進行方向で規定される
方向に所定の角度を有していればよく、その両端が閉じ
丸形状でも上記効果を達成する。
Therefore, the characteristics of the groove 29 need only be to have a predetermined angle in the direction defined by the traveling direction of the photoreceptor, and the above effect can be achieved even if the groove has a round shape with both ends closed.

第9図は上記シールド部材20の支持方法の変形例を示
す斜視図であシ、第5図の前内カバー15の代わりに左
前内カバー15aおよび右前内カバー15bを設け、両
前内カバー15a。
FIG. 9 is a perspective view showing a modification of the method of supporting the shield member 20, in which a left front inner cover 15a and a right front inner cover 15b are provided in place of the front inner cover 15 of FIG. 5, and both front inner covers 15a are provided. .

15bに各シールド部材20を接着したものである。15b and each shield member 20 is bonded to the shield member 15b.

この構成においても感光体8の側端部外側にはシールド
部材20および両側の前内カバー15 m + 15 
bが配設しであるため、トナーが感光体8の裏面に回シ
込むことが防止できる。
Even in this configuration, the shield member 20 and the front inner covers 15 m + 15 on both sides are provided on the outside of the side end of the photoreceptor 8.
Since b is provided, it is possible to prevent toner from entering the back surface of the photoreceptor 8.

このように各内カバー15.t6. 17.18は感光
体8の全幅を覆う必要が無く、少なくとも感光体8の両
側から側板までを覆う部材であっても良い。
In this way, each inner cover 15. t6. The members 17 and 18 do not need to cover the entire width of the photoreceptor 8, and may be members that cover at least both sides of the photoreceptor 8 to the side plates.

本発明は上記の如く画像表示装置において、極めて有効
なるものであるが、本発明は既述しているように複写機
等の画像形成装置にそのまま適用することができるもの
であり、第8図は本発明を複写機に適用した場合の一実
施例の概略構成を示したものである。
Although the present invention is extremely effective in the image display device as described above, the present invention can be directly applied to an image forming device such as a copying machine as described above. 1 shows a schematic configuration of an embodiment in which the present invention is applied to a copying machine.

図示した複写機の構成を簡単に説明すると、原稿台ガラ
ス40の上に載置された原稿41はフラッシュ光源42
で照明され、その反射像はレンズ43を介して導電基体
と表面の光導電層よ構成るベルト型感光体44の上に投
影される。
To briefly explain the configuration of the illustrated copying machine, an original 41 placed on an original platen glass 40 is exposed to a flash light source 42.
The reflected image is projected through a lens 43 onto a belt-type photoreceptor 44 consisting of a conductive substrate and a photoconductive layer on the surface.

このベルト型感光体44は駆動ローラ47.テンション
ローラ45.転写ローラ46に!り懸回支持されている
This belt type photoreceptor 44 is connected to a drive roller 47. Tension roller 45. To the transfer roller 46! It has been supported extensively.

一方、露光領域に入る前のベルト型感光体44はクリー
ニング器50と帯電器51によシ靜電潜像形成の準備を
整える。そして露光領域で原稿像の投影によシ靜電潜像
を形成され、感光体44の潜像は現像器52で可視化さ
れ、そのトナー画像は複写紙53に転写される。
On the other hand, the belt-type photoreceptor 44 before entering the exposure area is prepared to form a static latent image by a cleaning device 50 and a charger 51. Then, a static latent image is formed by projecting the original image in the exposure area, the latent image on the photoreceptor 44 is visualized by a developing device 52, and the toner image is transferred onto copy paper 53.

以上の構成を有する装置において、ベルト伏感光体44
における各ローラ45,46.47間に渡って平面な部
分には、像担持面の裏面と対向する位置に内カバー54
が設けられており、この内カバー54には上記実施例と
同様にシールド部材20が接着され、ベルト型感光体4
4の裏面と軽く接触している。
In the apparatus having the above configuration, the belt-folded photoreceptor 44
An inner cover 54 is provided on the flat portion between the rollers 45, 46, and 47 at a position facing the back surface of the image bearing surface.
A shield member 20 is adhered to the inner cover 54 as in the above embodiment, and a belt-type photoreceptor 4 is provided.
It is lightly touching the back side of 4.

上記の構成によりベルト伏感光体44の振動が抑えられ
、更に、画像露光面が平担に支持されるためトナー飛散
防止の他に高い精度で原稿像が露光できるため画像品質
も向上するという効果も得られた。
The above configuration suppresses vibrations of the belt-laying photoreceptor 44, and furthermore, since the image exposure surface is supported flatly, toner scattering is prevented and the original image can be exposed with high accuracy, resulting in improved image quality. was also obtained.

以上述べた如く本発明は、感光体等の像担持ベルトを用
いた複写機等の画像形成装置においても極めて有効なも
のであり、その有用性は大なるものである。なお、像担
持ベルトとしては感光体の他にマルチスタイラスを用い
て潜像を形成する様な周知の絶縁ベルトであっても良い
As described above, the present invention is extremely effective in image forming apparatuses such as copying machines that use an image bearing belt such as a photoreceptor, and its usefulness is great. In addition to the photoreceptor, the image bearing belt may be a well-known insulating belt that forms a latent image using a multi-stylus.

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

第1図は本発明を適用した画像表示装置の外観斜視図、
第2図は同装置の一部断面斜視図、第3図は同装置の断
面側視図、第4図は感光体図、″ 〜 第7図は接触部
材の 支持力式の変形例の斜視図、第8図は本発明を図におい
て、4,5,6.7・・・ローラ、8・・・像担持ベル
トである感光体、 20.20a、 20b。 20c、 20d・・・シールド部材、44・・・感光
体ベルトを示す。 e八1 7° 2゜ イZ6 −
FIG. 1 is an external perspective view of an image display device to which the present invention is applied;
Fig. 2 is a partial cross-sectional perspective view of the same device, Fig. 3 is a cross-sectional side view of the same device, Fig. 4 is a photoconductor view, and Fig. 7 is a perspective view of a modification of the supporting force type of the contact member. 8 shows the present invention, 4, 5, 6.7...roller, 8...photosensitive member which is an image bearing belt, 20.20a, 20b. 20c, 20d...shield member , 44... Indicates the photoreceptor belt. e81 7° 2° iZ6 -

Claims (2)

【特許請求の範囲】[Claims] (1)トナー像を外側表面に担持して無端移動する像担
持ベルトを支持する装置において、上記像担持ベルトを
張架支持する複数の支持ローラと、 ローラ間に設けられ上記像担持ベルトの内側表面の両側
端部に接触する接触部材と、を有することを特徴とする
像担持ベルト支持装置。
(1) In a device for supporting an endlessly moving image carrying belt carrying a toner image on its outer surface, a plurality of support rollers that support the image carrying belt in tension, and an inner side of the image carrying belt provided between the rollers. An image carrying belt support device comprising: a contact member that contacts both end portions of a surface.
(2)上記接触部材は像担持ベルトの進行方向と成す角
度θが0≦θ〈900の凸凹面を有することを特徴とす
る特許請求の範囲第(1)項に記載の像担持ベルト支持
装置。
(2) The image carrying belt support device according to claim 1, wherein the contact member has an uneven surface whose angle θ with the traveling direction of the image carrying belt is 0≦θ<900. .
JP22868783A 1983-12-02 1983-12-02 Supporting device for image carrier belt Pending JPS60120385A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22868783A JPS60120385A (en) 1983-12-02 1983-12-02 Supporting device for image carrier belt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22868783A JPS60120385A (en) 1983-12-02 1983-12-02 Supporting device for image carrier belt

Publications (1)

Publication Number Publication Date
JPS60120385A true JPS60120385A (en) 1985-06-27

Family

ID=16880227

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22868783A Pending JPS60120385A (en) 1983-12-02 1983-12-02 Supporting device for image carrier belt

Country Status (1)

Country Link
JP (1) JPS60120385A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5168318A (en) * 1989-10-18 1992-12-01 Konica Corporation Color image forming apparatus having a predetermined space maintained between a photosensitive belt and developing devices
JP2009300490A (en) * 2008-06-10 2009-12-24 Konica Minolta Business Technologies Inc Intermediate transfer belt and image forming apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5168318A (en) * 1989-10-18 1992-12-01 Konica Corporation Color image forming apparatus having a predetermined space maintained between a photosensitive belt and developing devices
JP2009300490A (en) * 2008-06-10 2009-12-24 Konica Minolta Business Technologies Inc Intermediate transfer belt and image forming apparatus

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