JPH0220108B2 - - Google Patents
Info
- Publication number
- JPH0220108B2 JPH0220108B2 JP58060804A JP6080483A JPH0220108B2 JP H0220108 B2 JPH0220108 B2 JP H0220108B2 JP 58060804 A JP58060804 A JP 58060804A JP 6080483 A JP6080483 A JP 6080483A JP H0220108 B2 JPH0220108 B2 JP H0220108B2
- Authority
- JP
- Japan
- Prior art keywords
- suction
- photoreceptor
- toner cloud
- suction duct
- suction port
- 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
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0896—Arrangements or disposition of the complete developer unit or parts thereof not provided for by groups G03G15/08 - G03G15/0894
- G03G15/0898—Arrangements or disposition of the complete developer unit or parts thereof not provided for by groups G03G15/08 - G03G15/0894 for preventing toner scattering during operation, e.g. seals
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
本発明は、電子写真複写機に用いられる現像機
内・外で発生するトナークラウドを回収する装置
に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an apparatus for collecting toner clouds generated inside and outside a developing machine used in an electrophotographic copying machine.
従来技術
電子写真複写機において、感光体と隣接して現
像機を配設し、感光体上に形成した静電潜像を現
像機によつてトナー像に現像しているが、現像機
内部及び現像機と感光体との間等の外部にトナー
クラウドが発生し、感光体の非画像部に付着して
コピーのバツクグラウンドを汚し見苦しいコピー
となつてしまう。Prior Art In an electrophotographic copying machine, a developing machine is disposed adjacent to a photoconductor, and the electrostatic latent image formed on the photoconductor is developed into a toner image by the developing machine. A toner cloud is generated outside, such as between the developing machine and the photoreceptor, and adheres to the non-image area of the photoreceptor, staining the background of the copy and resulting in an unsightly copy.
そこで、現像機のハウジングに沿つて吸引ダク
トを、その吸引口が感光体に向けて開口するよう
に設け、この吸引ダクトによつてトナークラウド
を吸引して回収するようにしている。 Therefore, a suction duct is provided along the housing of the developing device so that its suction port opens toward the photoreceptor, and the toner cloud is sucked and collected by the suction duct.
しかし、第１図に示すように、吸引ダクトａの
吸引口ｂは感光体ｃの軸方向に亘つた広幅形状
で、吸引源への接続口ｄと対向した部分に覆体ｅ
を設けたものであるから、吸引口の幅方向に亘る
吸引力が第２図の表図に示すように不均一とな
り、トナークラウドは吸引力が強い部分に集中し
て吸引される傾向がある。 However, as shown in FIG. 1, the suction port b of the suction duct a has a wide shape extending in the axial direction of the photoreceptor c, and there is a cover e in the part facing the connection port d to the suction source.
Because of this, the suction force across the width of the suction port becomes uneven as shown in the table in Figure 2, and the toner cloud tends to be concentrated in areas where the suction force is strong. .
このため、トナークラウドの発生量が多い場合
には、吸引力の強い部分にトナークラウドが集中
してしまい、その一部が感光体の非画像部に付着
してコピーのバツクグランドにひどい汚れとなつ
て現われ、見苦しいコピーとなつてしまうとの不
具合を有する。 Therefore, if a large amount of toner cloud is generated, the toner cloud will concentrate in areas with strong suction, and some of it will adhere to the non-image area of the photoconductor, causing severe stains on the background of copies. It has the problem that it appears as if it is distorted and becomes an unsightly copy.
発明の目的
本発明は、吸引ダクトの吸引口幅方向の吸引力
を均一とし、トナークラウドを感光体軸方向に亘
つて均一に吸引できるようにしたことを目的とす
る。OBJECTS OF THE INVENTION An object of the present invention is to make the suction force uniform in the width direction of the suction port of the suction duct so that the toner cloud can be uniformly suctioned across the axial direction of the photoreceptor.
発明の構成
吸引ダクトに仕切板を設けて吸引口の幅方向に
亘る吸引力を均一としたもの。Structure of the Invention A partition plate is provided in the suction duct to make the suction force uniform across the width of the suction port.
実施例
以下第３図以降を参照して本発明の実施例を説
明する。Embodiments Hereinafter, embodiments of the present invention will be described with reference to FIG. 3 and subsequent figures.
第３図は全体断面図であり、感光体１と対向し
て現像機Ａのハウジング２が配設され、該ハウジ
ング２内にはマグロール３・パドル４・ブレンダ
ー５・トリマープレート６・ミキシングブレード
７が設けてあり、マグロール３によつて現像剤を
感光体１に搬送して感光体１上の静電潜像をトナ
ー像に現像するように構成され、ハウジング２及
びハウジング２外（ハウジング２と感光体１との
間）には、マグロール３・パドル４・ブレンダー
５の回転等によりトナークラウドが発生する。 FIG. 3 is an overall sectional view, in which a housing 2 of a developing machine A is disposed facing the photoreceptor 1, and inside the housing 2 are a mag roll 3, a paddle 4, a blender 5, a trimmer plate 6, and a mixing blade 7. is configured to convey the developer to the photoreceptor 1 by the mag roll 3 and develop the electrostatic latent image on the photoreceptor 1 into a toner image. A toner cloud is generated between the toner and the photoreceptor 1 due to the rotation of the mag roll 3, paddle 4, blender 5, etc.
前記ハウジング２の下部に沿つて吸引ダクト８
が、その吸引口９が感光体１に向けて開口するよ
うに設けてあり、該吸引ダクト８の接続口１０は
図示しないエアフイルタを介して吸引源に接続し
てある。 A suction duct 8 along the lower part of the housing 2
However, the suction port 9 is provided to open toward the photoreceptor 1, and the connection port 10 of the suction duct 8 is connected to a suction source via an air filter (not shown).
前記吸引ダクト８は第４図に示すように、斜め
となつた両側壁８ａ，８ａと略三角形状となつた
端壁８ｂとを備え、吸引口９は感光体１の軸方向
に亘つた広幅形状となり、接続口１０は感光体１
の軸方向中央部に対向した狭幅な形状となつてい
ると共に、接続口１０と対向して第１仕切板１１
１が設けられ、両側壁８ａ，８ａと対向して第
２・第３仕切板１１2，１１3がそれぞれ設けられ
て、吸引口９よりのエアは各仕切板１１1，１１
２，１１3の隙間イ，ロ，ハ及び両側壁８ａ，８ａ
と第３仕切板１１3との隙間ニより接続口１０に
吸引されるようになり、第５図の表図に示すよう
に、吸引口９の吸引力は幅方向（感光体軸方向）
に亘つて略均一となつている。 As shown in FIG. 4, the suction duct 8 includes oblique side walls 8a, 8a and a substantially triangular end wall 8b, and the suction port 9 has a wide width extending in the axial direction of the photoreceptor 1. The connection port 10 is connected to the photoreceptor 1.
The first partition plate 11 faces the connection port 10 and has a narrow shape facing the central part in the axial direction.
1 is provided, and second and third partition plates 11 2 and 11 3 are respectively provided facing the side walls 8a and 8a, and the air from the suction port 9 flows through each partition plate 11 1 and 11.
2 , 11 3 gaps A, B, C and both side walls 8a, 8a
The suction force of the suction port 9 is increased in the width direction (in the axial direction of the photoreceptor) as shown in the table of FIG.
It is almost uniform throughout.
しかして、ハウジング２内・外に発生したトナ
ークラウドは、吸引ダクト８の吸引口９により感
光体１の軸方向に亘つて均一に吸引することがで
き、トナークラウドが多量に発生した場合でもコ
ピーのバツクグラウンドを汚すことがない。 Therefore, the toner cloud generated inside and outside the housing 2 can be uniformly sucked in the axial direction of the photoreceptor 1 by the suction port 9 of the suction duct 8, and even if a large amount of toner cloud is generated, copying can be performed. The background will not be contaminated.
発明の効果
本発明に係るトナークラウド回収装置によれ
ば、吸引ダクト８の吸引口９幅方向の吸引力が均
一となり、トナークラウドを感光体軸方向に亘つ
て均一に吸引できるから、トナークラウドが多量
に発生してもコピーのバツクグラウンドを汚すこ
とがない。Effects of the Invention According to the toner cloud recovery device according to the present invention, the suction force in the width direction of the suction port 9 of the suction duct 8 becomes uniform, and the toner cloud can be uniformly sucked in the axial direction of the photoreceptor. Even if it occurs in large quantities, it will not pollute the background of the copy.
第１図は従来の吸引ダクトの断面図、第２図は
その吸引口の幅方向吸引力分布を示す表図、第３
図は本発明の実施例を示す全体断面図、第４図は
吸引ダクトの断面図、第５図はその吸引口の幅方
向吸引力分布を示す表図である。
Ａは現像機、１は感光体、８は吸引ダクト、９
は吸引口、１１は仕切板。
Figure 1 is a cross-sectional view of a conventional suction duct, Figure 2 is a table showing the suction force distribution in the width direction of its suction port, and Figure 3 is a cross-sectional view of a conventional suction duct.
4 is a cross-sectional view of the suction duct, and FIG. 5 is a table showing the suction force distribution in the width direction of the suction port. A is a developing machine, 1 is a photoreceptor, 8 is a suction duct, 9
is the suction port, and 11 is the partition plate.
Claims (1)
が感光体１と対向するように設け、この吸引ダク
ト８により現像機内・外のトナークラウドを回収
するようにしたトナークラウド回収装置におい
て、前記吸引口９を感光体１の軸方向に亘つて広
幅形状とすると共に、吸引ダクト８に複数の仕切
板１１を、吸引口９の吸引力が幅方向に亘つて略
均一となるように設けたことを特徴とする電子写
真複写機におけるトナークラウド回収装置。1 A suction duct 8 is installed at the bottom of the developing machine, and its suction port 9
In the toner cloud recovery device, the suction duct 8 is provided so as to face the photoreceptor 1, and the toner cloud inside and outside the developing machine is collected. A toner cloud recovery device for an electrophotographic copying machine, characterized in that the suction duct 8 is provided with a plurality of partition plates 11 so that the suction force of the suction port 9 is substantially uniform across the width direction. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6080483A JPS59187373A (en) | 1983-04-08 | 1983-04-08 | Toner cloud recovering device of electrophotographic copying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6080483A JPS59187373A (en) | 1983-04-08 | 1983-04-08 | Toner cloud recovering device of electrophotographic copying machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59187373A JPS59187373A (en) | 1984-10-24 |
| JPH0220108B2 true JPH0220108B2 (en) | 1990-05-08 |
Family
ID=13152882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6080483A Granted JPS59187373A (en) | 1983-04-08 | 1983-04-08 | Toner cloud recovering device of electrophotographic copying machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59187373A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4583112A (en) * | 1984-10-29 | 1986-04-15 | Xerox Corporation | Venting system for the developer housing of an electrostatic copying machine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6230382Y2 (en) * | 1978-07-12 | 1987-08-04 | ||
| JPS55138660U (en) * | 1979-03-26 | 1980-10-02 | ||
| JPS56131156U (en) * | 1980-03-06 | 1981-10-05 |
-
1983
- 1983-04-08 JP JP6080483A patent/JPS59187373A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59187373A (en) | 1984-10-24 |
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