【０００１】[0001]
【産業上の利用分野】本発明は、ファクシミリ，プリン
ター，コピー機等におけるトナー搬送、並びに粉体食料
品，化学品搬送機器等における粉体搬送に用いられる粉
体搬送機構に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powder conveying mechanism used for conveying toner in facsimile machines, printers, copiers and the like, and for conveying powder in powdered food and chemical conveying equipment.
【０００２】[0002]
【従来の技術】近年、ファクシミリ，プリンター，コピ
ー機等のようにトナーを搬送して利用する装置や、粉体
食料品や化学品等を搬送する粉体搬送機器の普及が急速
に進んでいる。そして、これらの粉体搬送機構を備えた
装置は、小型で低価格であることが要求されている。そ
のために、粉体搬送機構の簡易化が必要となるが、粉体
の搬送効率を落とすことは出来ない。2. Description of the Related Art In recent years, devices such as facsimile machines, printers, and copiers that convey and use toner and powder conveying devices that convey powdered foods and chemicals have been rapidly spreading. . Devices equipped with these powder transport mechanisms are required to be small and inexpensive. Therefore, simplification of the powder transport mechanism is required, but the powder transport efficiency cannot be reduced.
【０００３】従来の粉体搬送機構としては、金属等の棒
材を用いた螺旋状の切削品、金型を用いた螺旋状の樹脂
成形品、部品単価の低い線材を用いたバネ状の螺旋形状
体が主に用いられていた。Conventional powder conveying mechanisms include a spiral cut using a bar material such as a metal, a spiral resin molded product using a mold, and a spring spiral using a wire having a low unit cost. Shaped bodies were mainly used.
【０００４】[0004]
【発明が解決しようとする課題】上記した従来技術にお
いて、螺旋状の切削品は量産性が悪く、また樹脂成形品
は螺旋形状をつくり出すためにアンダーカット等を考慮
した複雑な金型が必要となるなど、低価格化を図ること
が困難であるという問題点があった。In the above-mentioned prior art, a spiral cut product has a low mass productivity, and a resin molded product requires a complicated mold in consideration of an undercut or the like in order to form a spiral shape. For example, there is a problem that it is difficult to reduce the price.
【０００５】さらに、装置の小型化や実装上の制約か
ら、粉体搬送路をある曲率を有する形状にしなければな
らない場合があるが、前記切削品、あるいは樹脂成形品
の場合、ある曲率を有する粉体搬送路において回転させ
ることは不可能であった。したがって、金属等の棒材を
用いた螺旋状の切削品や、金型を用いた螺旋状の樹脂成
形品は、部品単価が高くなる他、曲率を有する粉体搬送
路においては使用できないという問題点があった。Further, in some cases, it is necessary to form the powder conveying path in a shape having a certain curvature due to the miniaturization of the apparatus and restrictions on mounting. In the case of the above-mentioned cut product or resin molded product, the powder conveying path has a certain curvature. It was impossible to rotate in the powder conveying path. Therefore, a spiral cut product using a bar material such as a metal or a spiral resin molded product using a mold increases the unit cost of parts and cannot be used in a powder conveying path having a curvature. There was a point.
【０００６】また、部品単価の低い線材を用いたバネ状
の螺旋形状体の場合は、直線状の半円筒粉体搬送路にお
いて回転させると、中心振れが発生し、安定した搬送力
が得られず、搬送路底面に溜った微量の粉体の搬送がで
きないという問題点があった。In the case of a spring-shaped helical body using a wire rod with a low unit cost, when the helical body is rotated in a straight semi-cylindrical powder conveying path, a center run-out occurs and a stable conveying force can be obtained. However, there is a problem that a small amount of powder accumulated on the bottom of the transfer path cannot be transferred.
【０００７】さらに、実装上の関係で、粉体搬送路が半
円筒形状の場合、螺旋形状体の回転駆動中に、螺旋形状
体の長手方向の一部分に回転を阻止する現象が発生した
際、粉体搬送路から螺旋形状体が飛び出す現象が発生す
るという問題点があった。Further, if the powder conveying path has a semi-cylindrical shape due to mounting problems, when a phenomenon occurs in which the rotation of the spiral body is prevented from rotating in a part of the longitudinal direction of the spiral body during rotation driving, There has been a problem that a phenomenon in which the spiral shaped body jumps out of the powder conveying path occurs.
【０００８】本発明は、上記した従来技術の問題点に鑑
み成されたもので、低価格化を図ることができ、さらに
曲率を有する粉体搬送路において使用することができ、
粉体搬送路の底面に溜まった微量の粉体を搬送すること
が可能で、粉体搬送路から螺旋状体が飛び出すことが無
く、搬送効率の高い粉体搬送機構を提供することを目的
とする。[0008] The present invention has been made in view of the above-mentioned problems of the prior art, and can be used in a powder conveying path having a low cost and a curvature.
An object of the present invention is to provide a powder transport mechanism that can transport a small amount of powder accumulated on the bottom surface of the powder transport path, does not cause a spiral body to jump out of the powder transport path, and has a high transport efficiency. I do.
【０００９】[0009]
【課題を解決するための手段】上記目的を達成するため
に、本発明によれば、長手方向に円筒または半円筒状の
断面を有する粉体搬送路と、粉体搬送路中で回転する粉
体搬送用の螺旋形状体とを備えた粉体搬送機構が提供さ
れる。According to the present invention, there is provided, in accordance with the present invention, a powder conveying path having a cylindrical or semi-cylindrical cross section in a longitudinal direction, and a powder rotating in the powder conveying path. A powder conveying mechanism including a helical body for conveying a body is provided.
【００１０】また、上記螺旋形状体は中空で柔軟な構造
を有し、上記粉体搬送路はある曲率を有しても良い。[0010] The spiral body may have a hollow and flexible structure, and the powder conveying path may have a certain curvature.
【００１１】また、上記螺旋形状体は中空で柔軟な構造
を有し、さらに上記螺旋形状体の内径以下の外径を有す
る丸棒を螺旋形状体の中に通すように構成しても良い。The helical body may have a hollow and flexible structure, and a round bar having an outer diameter equal to or less than the inner diameter of the helical body may be passed through the helical body.
【００１２】さらに、上記丸棒は上記螺旋形状体の回転
に伴って、螺旋形状体の回転数と異なった回転数で回転
する。[0012] Further, the round bar rotates at a rotational speed different from the rotational speed of the helical body with the rotation of the helical body.
【００１３】[0013]
【作用】本発明の粉体搬送機構は、必要最小限の低価格
な構成として、円筒または半円筒状の搬送路と、回転す
る中空で柔軟な構造の螺旋形状体を有し、これにより搬
送効率を落とすことのない機構にしたものである。The powder conveying mechanism of the present invention has a cylindrical or semi-cylindrical conveying path and a rotating hollow and flexible helical body as a minimum necessary and low-priced structure. This is a mechanism that does not reduce the efficiency.
【００１４】すなわち、粉体搬送路は、直線またはある
曲率を有して形成され、断面が円筒または半円筒状の形
状を保つものである。螺旋形状体は、前記粉体搬送路の
中で回転する中空で柔軟な構造を有し、切削や金型を必
要としない低価格なバネ状のものである。この螺旋形状
体は、柔軟な構造から、ある曲率を有する粉体搬送路に
おいても使用可能である。That is, the powder conveying path is formed to have a straight line or a certain curvature, and to maintain a cylindrical or semi-cylindrical cross section. The spiral shaped body has a hollow and flexible structure that rotates in the powder conveying path, and is a low-cost spring-shaped body that does not require cutting or a mold. The helical body can be used in a powder conveying path having a certain curvature because of its flexible structure.
【００１５】また、直線状の粉体搬送路においては、搬
送路底面の微量な粉体の搬送をより効率良く行うため
に、丸棒を螺旋形状体の中に通し、長手方向の中心振れ
を低減し、粉体搬送路からの螺旋形状体が飛び出すこと
を防止するとともに（特に、螺旋形状体の長手方向の一
部分に回転を阻止する現象が発生した際）、丸棒の自重
により、常時粉体搬送路の底面において回転可能とし、
粉体搬送路の底面に溜りやすい粉体の搬送を促進する。In the linear powder conveying path, a round bar is passed through the spiral body so that a small amount of powder on the bottom of the conveying path can be conveyed more efficiently. And prevents the spiral-shaped body from jumping out of the powder conveying path (especially when a phenomenon occurs in which the rotation of the spiral-shaped body is prevented in a part of the lengthwise direction). Rotatable at the bottom of the body transport path,
It promotes the transfer of powder that easily accumulates on the bottom of the powder transfer path.
【００１６】[0016]
【実施例】以下、本発明の一実施例の粉体搬送機構につ
いて、図面を参照して説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A powder conveying mechanism according to one embodiment of the present invention will be described below with reference to the drawings.
【００１７】図２は本実施例に係わる粉体搬送機構を搭
載した電子写真方式プリンタの構成図である。FIG. 2 is a configuration diagram of an electrophotographic printer equipped with a powder conveying mechanism according to the present embodiment.
【００１８】図２に示す電子写真方式プリンタは、光源
５と現像ユニット６とドラムユニット７と定着ユニット
１０と用紙カセット１２と排トナー収容部１５を主要部
としている。ここで、ドラムユニット７は、直線状粉体
搬送路４と帯電器８とクリーニングブレード９と感光体
ドラム１８とから構成され、さらに直線状粉体搬送路４
内には螺旋形状体１と丸棒３が設けられている。The main components of the electrophotographic printer shown in FIG. 2 include a light source 5, a developing unit 6, a drum unit 7, a fixing unit 10, a paper cassette 12, and a waste toner storage unit 15. Here, the drum unit 7 includes the linear powder transport path 4, the charger 8, the cleaning blade 9, and the photosensitive drum 18, and further includes the linear powder transport path 4.
Inside, a spiral-shaped body 1 and a round bar 3 are provided.
【００１９】次に、図２に示す電子写真方式プリンタの
動作の概略について説明する。感光体ドラム１８は帯電
器８によって帯電され、その後、光源５により画像デー
タに基づいた潜像画が形成される。次に、現像ユニット
６から感光体ドラム１８にトナーが供給され、トナー画
像が形成される。この動作と並行して、記録用紙１７が
用紙カセット１２からピックアップローラ１３によりピ
ックされ、レジストローラ１４によりスキュウ低減さ
れ、感光体ドラム１８に供給される。これにより、上記
形成されたトナー画像が記録用紙１７の表面に転写器１
１で転写される。その後、記録用紙１７上のトナーは、
定着器１０により溶融定着される。この際、記録用紙１
７に転写されず、感光体ドラム１８に残った不要な残留
トナーは、クリーニングブレード９により掻き落とされ
る。掻き落とされた残留トナーは、粉体搬送路４に溜ま
り、螺旋形状体１により記録用紙１７の幅方向に搬送さ
れ、廃トナー収容部１５に収容される。Next, an outline of the operation of the electrophotographic printer shown in FIG. 2 will be described. The photoconductor drum 18 is charged by the charger 8, and thereafter, a latent image based on image data is formed by the light source 5. Next, toner is supplied from the developing unit 6 to the photosensitive drum 18 to form a toner image. In parallel with this operation, the recording paper 17 is picked from the paper cassette 12 by the pickup roller 13, the skew is reduced by the registration roller 14, and the recording paper 17 is supplied to the photosensitive drum 18. Thus, the formed toner image is transferred onto the surface of the recording paper 17 by the transfer device 1.
1 is transferred. After that, the toner on the recording paper 17
The toner is fused and fixed by the fixing device 10. At this time, the recording paper 1
Unnecessary toner remaining on the photosensitive drum 18 without being transferred to the photosensitive drum 18 is scraped off by the cleaning blade 9. The scraped residual toner accumulates in the powder conveying path 4, is conveyed by the spiral-shaped body 1 in the width direction of the recording paper 17, and is stored in the waste toner storing unit 15.
【００２０】図１および図３は、図２に示すトナーの搬
送機構を示す図である。図１は直線状粉体搬送路４の断
面説明図であり、図３は側面説明図である。直線状粉体
搬送路４は、断面が円筒または半円筒状の形状を保つも
ので、螺旋形状体１，丸棒３，駆動部２が搭載されてい
る。直線状粉体搬送路４に溜まった粉体１９は、１６０
rpm以下の回転数で回転している駆動部２により、螺旋
形状体１が粉体拝出側に回転することで搬送される。螺
旋形状体１は部品単価の低い線材などを用いて形成さ
れ、中空で柔軟な構造を有している。ここで、螺旋形状
体１が中心振れ等を起こし、直線状粉体搬送路４の底に
溜まった粉体１９が効率良く搬送できない事態を防止す
るため、螺旋形状体１の中に丸棒３を通している。丸棒
３は、螺旋形状体１の内径と同じ、あるいはそれより小
さな外径で、常に丸棒３の自重により粉体１９の溜まっ
ている側に螺旋形状体１を押しつけ、粉体搬送効率を高
める役割を果たす。また、丸棒３は、螺旋形状体１が回
転駆動している最中に、螺旋形状体１の長手方向の一部
分に回転を阻止する現象が発生した場合、螺旋形状体１
が粉体搬送路４の外部に飛び出すことを防止する役割を
果たす。ここで、螺旋形状体１の中の丸棒３は、螺旋形
状体の回転力より回転可能に構成され、一般にその回転
数は螺旋形状体の回転数とは異なった回転数となる。FIG. 1 and FIG. 3 are views showing the toner conveying mechanism shown in FIG. FIG. 1 is an explanatory cross-sectional view of the linear powder conveying path 4, and FIG. 3 is an explanatory side view. The linear powder conveying path 4 keeps a cylindrical or semi-cylindrical shape in cross section, and has a spiral-shaped body 1, a round bar 3, and a driving unit 2 mounted thereon. The powder 19 accumulated in the linear powder conveying path 4 is 160
The helical body 1 is conveyed by rotating the helical body 1 toward the powder dispensing side by the drive unit 2 rotating at a rotation speed of rpm or less. The spiral-shaped body 1 is formed using a wire having a low unit cost, and has a hollow and flexible structure. Here, in order to prevent a situation in which the spiral shaped body 1 causes a center runout or the like and the powder 19 accumulated at the bottom of the linear powder transport path 4 cannot be efficiently transported, the round bar 3 is inserted into the spiral shaped body 1. Through. The round bar 3 has an outer diameter equal to or smaller than the inner diameter of the spiral shaped body 1, and constantly presses the spiral shaped body 1 against the side where the powder 19 is accumulated by the weight of the round bar 3 to improve the powder transfer efficiency. Play a role to enhance. In addition, when the phenomenon that the rotation of the spiral shaped body 1 is prevented in a part of the longitudinal direction of the spiral shaped body 1 occurs while the spiral shaped body 1 is rotationally driven, the round shaped body 1
Plays a role in preventing the powder from jumping out of the powder conveying path 4. Here, the round bar 3 in the spiral-shaped body 1 is configured to be rotatable by the rotational force of the spiral-shaped body, and the rotation speed is generally different from the rotation speed of the spiral-shaped body.
【００２１】次に、ある曲率を有する粉体搬送路を用い
た粉体搬送機構について、図４を用いて説明する。粉体
搬送用の螺旋形状体１は、部品単価の低い線材などを用
いた中空で柔軟な構造を有している。螺旋形状体１は、
装置の小型化等で必要となった円筒状である曲率を有す
曲線状粉体搬送路１６の中においても使用可能である。
なお、図４には示していないが、螺旋形状体１の中にフ
レキシブルな丸棒３を設けても良い。Next, a powder transport mechanism using a powder transport path having a certain curvature will be described with reference to FIG. The spiral-shaped body 1 for conveying powder has a hollow and flexible structure using a wire having a low unit cost. The spiral body 1 is
The present invention can also be used in a curved powder conveying path 16 having a cylindrical curvature required for downsizing of the apparatus.
Although not shown in FIG. 4, a flexible round bar 3 may be provided in the spiral-shaped body 1.
【００２２】[0022]
【発明の効果】本発明によれば、構成が簡単であり、安
価な部品で製造できるため、粉体搬送機構の低価格化を
図ることができる。さらに、曲率を有する粉体搬送路に
おいても使用することが可能になり、さらに粉体搬送路
の底面に溜まった微量の粉体を搬送することが可能とな
る。また、粉体搬送路から螺旋状体が飛び出すことが無
く、搬送効率の高い粉体搬送機構を提供することができ
る。According to the present invention, since the structure is simple and it can be manufactured with inexpensive parts, the cost of the powder conveying mechanism can be reduced. Further, it can be used in a powder conveying path having a curvature, and furthermore, it becomes possible to convey a small amount of powder accumulated on the bottom surface of the powder conveying path. Further, it is possible to provide a powder transport mechanism with high transport efficiency without the spiral body protruding from the powder transport path.
【図１】図２に示す直線状粉体搬送路の断面説明図。FIG. 1 is an explanatory cross-sectional view of the linear powder conveying path shown in FIG. 2;
【図２】本発明の粉体搬送機構が適用される電子写真方
式プリンタの構成図。FIG. 2 is a configuration diagram of an electrophotographic printer to which the powder conveying mechanism of the present invention is applied.
【図３】図２に示す直線状粉体搬送路の側面説明図。FIG. 3 is an explanatory side view of the linear powder conveying path shown in FIG. 2;
【図４】ある曲率を有する粉体搬送路を用いた粉体搬送
機構の一例を示す説明図。FIG. 4 is an explanatory view showing an example of a powder transport mechanism using a powder transport path having a certain curvature.
１…螺旋形状体、２…駆動部、３…丸棒、４…直線状粉
体搬送路、５…光源、６…現像ユニット、７…ドラムユ
ニット、８…帯電部、９…クリーニングブレード、１０
…定着器、１１…転写器、１２…用紙カセット、１３…
ピックアップローラ、１４…レジストローラ、１５…排
トナー収容部、１６…曲線状粉体搬送路、１７…記録用
紙、１８…感光体ドラム、１９…粉体。DESCRIPTION OF SYMBOLS 1 ... Helix-shaped body, 2 ... Drive part, 3 ... Round bar, 4 ... Linear powder conveyance path, 5 ... Light source, 6 ... Developing unit, 7 ... Drum unit, 8 ... Charging part, 9 ... Cleaning blade, 10
... Fixing device, 11 ... Transfer device, 12 ... Paper cassette, 13 ...
Pickup roller, 14: registration roller, 15: discharged toner storage section, 16: curved powder conveying path, 17: recording paper, 18: photosensitive drum, 19: powder.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 本田 龍夫 茨城県日立市大みか町七丁目１番１号株 式会社 日立製作所 日立研究所内 (72)発明者 椎名 悌 神奈川県横浜市戸塚区戸塚町216番地株 式会社 日立製作所 情報通信事業部内 (56)参考文献 特開 昭54−159983（ＪＰ，Ａ) 特開 昭61−257811（ＪＰ，Ａ) 実開 平２−78973（ＪＰ，Ｕ) 特公 昭49−591（ＪＰ，Ｂ１) (58)調査した分野(Int.Cl.7，ＤＢ名) B65G 33/00 - 33/38──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tatsuo Honda 7-1-1, Omika-cho, Hitachi City, Ibaraki Prefecture Inside Hitachi, Ltd. Address Co., Ltd. Hitachi, Ltd. Information and Communication Division (56) References JP-A-54-159983 (JP, A) JP-A-61-257811 (JP, A) JP-A-2-78973 (JP, U) 49-591 (JP, B1) (58) Fields investigated (Int. Cl.7 , DB name) B65G 33/00-33/38
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5095763AJP3064740B2 (en) | 1993-04-22 | 1993-04-22 | Printer |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5095763AJP3064740B2 (en) | 1993-04-22 | 1993-04-22 | Printer |
| Publication Number | Publication Date |
|---|---|
| JPH06305537A JPH06305537A (en) | 1994-11-01 |
| JP3064740B2true JP3064740B2 (en) | 2000-07-12 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5095763AExpired - LifetimeJP3064740B2 (en) | 1993-04-22 | 1993-04-22 | Printer |
| Country | Link |
|---|---|
| JP (1) | JP3064740B2 (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7800682B2 (en) | 2002-08-30 | 2010-09-21 | Fujitsu Limited | Portable terminal and portable telephone having a camera and lens cover |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7099617B2 (en) | 2003-07-03 | 2006-08-29 | Samsung Electronics Co., Ltd. | Waste toner transfer apparatus and electrophotographic printer adopting the same |
| EP1698868A1 (en)* | 2005-03-03 | 2006-09-06 | Cabinplant International A/S | Weighing arrangement |
| JP4563477B2 (en)* | 2008-09-16 | 2010-10-13 | 株式会社リコー | Powder conveying apparatus, image forming apparatus, toner container, and process cartridge |
| JP5949087B2 (en)* | 2012-04-23 | 2016-07-06 | 株式会社リコー | Powder conveying apparatus, process cartridge, and image forming apparatus |
| JP7275508B2 (en)* | 2018-09-13 | 2023-05-18 | 富士フイルムビジネスイノベーション株式会社 | POWDER CONVEYOR, DETACHABLE UNIT AND IMAGE FORMING APPARATUS |
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| US7800682B2 (en) | 2002-08-30 | 2010-09-21 | Fujitsu Limited | Portable terminal and portable telephone having a camera and lens cover |
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| JPH06305537A (en) | 1994-11-01 |
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