JPH07271171A - Developer supplying device - Google Patents
Developer supplying deviceInfo
- Publication number
- JPH07271171A JPH07271171A JP6079499A JP7949994A JPH07271171A JP H07271171 A JPH07271171 A JP H07271171A JP 6079499 A JP6079499 A JP 6079499A JP 7949994 A JP7949994 A JP 7949994A JP H07271171 A JPH07271171 A JP H07271171A
- Authority
- JP
- Japan
- Prior art keywords
- stirring
- partition member
- toner
- developer
- carrying means
- 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
Links
Landscapes
- Dry Development In Electrophotography (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、例えば複写機やプリン
タ等とされる電子写真方式等の画像形成装置において、
潜像を顕像化するために使用される現像装置に現像剤を
補給するための現像剤補給装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrophotographic image forming apparatus such as a copying machine or a printer.
The present invention relates to a developer replenishing device for replenishing a developing device used for developing a latent image with a developer.
【0002】[0002]
【従来の技術】図6にフルカラー複写機の各現像器4
Y、4M、4C及び4BKの配置と、これらに対する現
像剤(トナー)の収納部(ホッパー)の配置との関係を
示す。2. Description of the Related Art FIG. 6 shows each developing device 4 of a full-color copying machine.
The relationship between the arrangement of Y, 4M, 4C, and 4BK and the arrangement of the developer (toner) storage section (hopper) for them is shown.
【0003】現像剤補給装置、即ちトナー補給装置20
0は、各現像器に補給すべき色トナーを収容した現像容
器であるイエロートナーホッパー201Y、マゼンタト
ナーホッパー201M、シアントナーホッパー201C
及びブラックトナーホッパー201BKを、上記現像器
と同じ順序で装置本体の一端側に設けた支持枠202に
固定されている。尚、上記支持枠202は装置本体に対
して実質的に固定されている。A developer replenishing device, that is, a toner replenishing device 20.
Reference numeral 0 denotes a yellow toner hopper 201Y, a magenta toner hopper 201M, and a cyan toner hopper 201C, which are developing containers containing color toners to be replenished to each developing device.
The black toner hopper 201BK is fixed to a support frame 202 provided on one end side of the apparatus main body in the same order as the developing device. The support frame 202 is substantially fixed to the apparatus body.
【0004】各トナーホッパー201Y、201M、2
01C、201BKには各現像器のトナー受け口400
Y、400M、400C、400BKの位置と一致する
ように各々トナー排出口203Y、203M、203
C、203BKが設けられる。Toner hoppers 201Y, 201M, 2
01C and 201BK each have a toner receiving port 400 of each developing device.
Toner discharge ports 203Y, 203M, and 203, respectively, so as to match the positions of Y, 400M, 400C, and 400BK.
C, 203BK is provided.
【0005】各トナーホッパー201Y、201M、2
01C、201BKに収納されたトナーは、内部にスク
リューを配置したトナー搬送路300Y、300M、3
00C、300BKに搬送され、各現像器のトナー受け
口400Y、400M、400C、400BKに排出さ
れる。Toner hoppers 201Y, 201M, 2
The toner stored in 01C and 201BK is stored in the toner transport paths 300Y, 300M,
00C, 300BK, and is discharged to the toner receiving ports 400Y, 400M, 400C, 400BK of each developing device.
【0006】トナー搬送路は、トナー排出口の位置によ
って図6で例えば、300M、300C、300BKの
ように水平方向に配置される場合もあれば、300Yの
ように軸線方向に配置される場合もある。Depending on the position of the toner discharge port, the toner conveying path may be arranged in the horizontal direction like 300M, 300C and 300BK in FIG. 6, or may be arranged in the axial direction like 300Y in FIG. is there.
【0007】次に、図7を参照してトナー補給装置の詳
細について説明する。図7は図6におけるトナーホッパ
ー201M、201C、201BKのうちいずれかのト
ナーホッパーをその右側より見た側面断面図である。Next, the details of the toner replenishing device will be described with reference to FIG. FIG. 7 is a side sectional view of one of the toner hoppers 201M, 201C, and 201BK in FIG. 6 as viewed from the right side.
【0008】トナーホッパー201内に収容されたトナ
ーは、トナーホッパー内に配置された撹拌・搬送手段3
01によって図示A方向に搬送される。これによって、
搬送路300とトナーホッパー201との接続口201
aより最も離れた位置201b付近のトナーが滞留する
ことを防ぎ、ホッパーの容積を有効に活用することがで
きる。The toner contained in the toner hopper 201 is agitating / conveying means 3 arranged in the toner hopper.
01 is conveyed in the direction A in the drawing. by this,
Connection port 201 between the transport path 300 and the toner hopper 201
It is possible to prevent the toner near the position 201b farthest from the position a from staying, and to effectively use the volume of the hopper.
【0009】また、この撹拌・搬送手段301は、トナ
ーホッパー201内でトナーが凝集することを防止する
働きをもなしている。これは、凝集したトナーが現像器
4へ補給された場合、局所的にトリボ不足を生じ、ある
いは現像スリーブへの一様な塗布厚が得られず、高品質
の画像を形成するのが困難となるからである。上記撹拌
・搬送手段301は、トナーホッパー201側面に軸支
された主軸304に1ピッチ以下の螺旋形状の撹拌羽根
310を複数個嵌着して構成される。The stirring / conveying means 301 also functions to prevent the toner from aggregating in the toner hopper 201. This is because when the agglomerated toner is replenished to the developing device 4, tribo becomes locally insufficient or a uniform coating thickness on the developing sleeve cannot be obtained, which makes it difficult to form a high quality image. Because it will be. The stirring / conveying means 301 is constructed by fitting a plurality of spiral stirring blades 310 having a pitch of 1 or less on a main shaft 304 pivotally supported on the side surface of the toner hopper 201.
【0010】接続口201aに搬送されたトナーは図示
軸線方向に配置されたトナー搬送路300に入り、内部
に配置されたスクリュー302により図中手前方向に搬
送され、トナー排出口203より排出されトナー受け口
400より現像器4内に補給される。上記撹拌・搬送手
段301及びスクリュー302は、図示しない駆動源よ
り、それぞれギヤ305、306を介して駆動される。The toner conveyed to the connection port 201a enters the toner conveyance path 300 arranged in the axial direction of the drawing, is conveyed in the front direction in the figure by the screw 302 arranged inside, and is discharged from the toner discharge port 203. It is replenished into the developing device 4 through the receiving port 400. The stirring / conveying means 301 and the screw 302 are driven by gears 305 and 306, respectively, by a drive source (not shown).
【0011】以上のトナー補給装置によってトナーがト
ナーホッパー内に滞留することと凝集することを防止
し、高品質な画像形成が実現できる。The toner replenishing device described above prevents the toner from staying in the toner hopper and from aggregating, and high quality image formation can be realized.
【0012】[0012]
【発明が解決しようとする課題】近年複写機はオフィス
スペースの有効利用のため、省スペース化の要求が高ま
っている。これに伴いトナー補給装置は容量を確保しつ
つトナー補給装置全体を小型化する必要がある。その結
果、特に上記従来例で示したフルカラー複写機のトナー
補給装置では、4個のトナーホッパーを上下方向に長い
縦長形状にして幅方向を制約し小型化を実現している。In recent years, there has been an increasing demand for space saving in copying machines in order to effectively use office space. Along with this, it is necessary for the toner replenishing device to downsize the entire toner replenishing device while ensuring the capacity. As a result, in particular, in the toner replenishing device of the full-color copying machine shown in the above-mentioned conventional example, the four toner hoppers are formed in a vertically long shape that is long in the vertical direction, and the width direction is restricted to realize the downsizing.
【0013】しかしながら、このような縦長形状のトナ
ーホッパーは、その下部付近でトナーの自重による圧力
が高くなりやすいため、上記撹拌・搬送手段301の駆
動負荷が高まり、駆動手段にコストの高い高出力モータ
を必要としたり、撹拌羽根310が変形、破損するとい
う問題があった。However, in such a vertically long toner hopper, the pressure due to the weight of the toner tends to increase near the lower portion of the toner hopper, so that the driving load of the agitating / conveying means 301 increases and the driving means has a high output with a high cost. There is a problem that a motor is required and the stirring blade 310 is deformed or damaged.
【0014】従って、本発明の目的は、撹拌・搬送手段
の駆動負荷を低減させることにより、低コスト化と信頼
性の向上を実現する現像剤補給装置を提供することであ
る。Accordingly, an object of the present invention is to provide a developer replenishing device which realizes cost reduction and reliability improvement by reducing the driving load of the stirring / conveying means.
【0015】[0015]
【課題を解決するための手段】上記目的は本発明に係る
現像剤補給装置にて達成される。要約すれば、本発明
は、底部の一部に開口部を有する現像容器を備えた現像
剤補給装置において、前記現像容器を上下方向に分割す
る少なくとも一つ以上の仕切部材を具備し、該仕切部材
に分割された上下部分を連通する連通口を有することを
特徴とする現像剤補給装置である。The above object can be achieved by the developer replenishing device according to the present invention. In summary, the present invention provides a developer replenishing device having a developing container having an opening at a part of the bottom thereof, the developing device comprising at least one partition member for vertically dividing the developing container, The developer replenishing device is characterized by having a communication port that communicates the upper and lower parts divided into members.
【0016】前記仕切部材の下方に、前記現像容器中の
現像剤を撹拌し、底部の前記開口部へ現像剤を搬送せし
める撹拌・搬送手段を備えることが好ましい。Below the partition member, it is preferable to provide a stirring / conveying means for stirring the developer in the developing container and for conveying the developer to the opening at the bottom.
【0017】前記仕切部材は格子状であるが好ましい。It is preferable that the partition member has a lattice shape.
【0018】前記仕切部材はある角度をもった斜面を構
成することが好ましい。It is preferable that the partition member forms a slope having an angle.
【0019】前記仕切部材の上方に、前記仕切部材上部
の現像剤を撹拌するための撹拌手段を備えることが好ま
しい。It is preferable that a stirring means for stirring the developer on the upper part of the partition member is provided above the partition member.
【0020】[0020]
【実施例】以下、本発明に係る現像剤補給装置を図面に
則して更に詳しく説明する。尚、上記従来例と同一部材
については同一符号を付し、その説明を省略する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The developer replenishing device according to the present invention will be described below in more detail with reference to the drawings. The same members as those in the conventional example are designated by the same reference numerals, and the description thereof will be omitted.
【0021】実施例1 本発明による現像剤補給装置の第1実施例について図1
乃至3を参照して説明する。First Embodiment FIG. 1 shows a first embodiment of a developer replenishing device according to the present invention.
It will be described with reference to FIGS.
【0022】図1及び2に示すように、トナー補給装置
のトナーホッパー201はその内部の最下部に配置され
た撹拌・搬送手段301を備えており、その上方には仕
切部材320が撹拌・搬送手段301の長手方向に沿っ
て平行に設けられている。As shown in FIGS. 1 and 2, the toner hopper 201 of the toner replenishing device has an agitating / conveying means 301 arranged at the lowermost portion inside thereof, and a partition member 320 is agitating / conveying above it. It is provided in parallel along the longitudinal direction of the means 301.
【0023】仕切部材320は図3に示すようにこの仕
切部材の上下部分を連通する複数の連通口321を有す
る格子状に構成され、トナーホッパー201の段差部に
形成された座面212と、この座面上に形成された突起
211との間に固定されている。尚。段差部はトナーホ
ッパー201の垂直部201aとこの垂直部から下方に
連続した湾曲部201bとの境界部分に形成されてい
る。As shown in FIG. 3, the partition member 320 is formed in a lattice shape having a plurality of communication ports 321 for communicating the upper and lower parts of the partition member, and a seating surface 212 formed at the stepped portion of the toner hopper 201, It is fixed between the protrusion 211 formed on the seat surface. still. The step portion is formed at a boundary portion between the vertical portion 201a of the toner hopper 201 and the curved portion 201b continuous downward from the vertical portion 201a.
【0024】また仕切部材320の上方には、トナーを
仕切部材320の格子部に堆積させないためのワイヤ状
の撹拌部材322が配置されている。Above the partition member 320, a wire-shaped stirring member 322 for preventing toner from accumulating on the lattice portion of the partition member 320 is arranged.
【0025】撹拌・搬送手段301は主軸304と主軸
に螺旋状に取付けられた撹拌羽根310とを有し、主軸
304はその両端をトナーホッパーの壁部に設けられた
軸受221、222に回転自在に支持され、一方の軸受
221から更に外方に延びた主軸304の端部にはギヤ
305が固定されている。The stirring / conveying means 301 has a main shaft 304 and a stirring blade 310 spirally attached to the main shaft, and both ends of the main shaft 304 are freely rotatable by bearings 221 and 222 provided on the wall of the toner hopper. A gear 305 is fixed to an end portion of a main shaft 304 which is supported by the main shaft 304 and further extends outward from one bearing 221.
【0026】同様に撹拌部材322は、撹拌軸323と
撹拌軸に取付けられた撹拌ワイヤ324とを有し、撹拌
軸323はその両端をトナーホッパーの壁部に設けられ
た軸受223、224に支持され、一方の軸受223か
ら更に外方に延びた撹拌軸323の端部にはギヤ307
が固定されている。Similarly, the stirring member 322 has a stirring shaft 323 and a stirring wire 324 attached to the stirring shaft, and both ends of the stirring shaft 323 are supported by bearings 223 and 224 provided on the wall portion of the toner hopper. The gear 307 is attached to the end of the stirring shaft 323 that extends further outward from the one bearing 223.
Is fixed.
【0027】撹拌・搬送手段301は図に示さないモー
タ等の駆動源により回転駆動され、その回転力がギヤ3
05を介してギヤ307に伝達され、撹拌部材322が
回転駆動される。The stirring / conveying means 301 is rotationally driven by a drive source such as a motor (not shown), and the rotational force thereof is applied to the gear 3
It is transmitted to the gear 307 via 05, and the stirring member 322 is rotationally driven.
【0028】上記のように構成されたトナーホッパーに
よれば、トナーの自重による圧力が、格子状の仕切部材
320によって分散し、下方の撹拌・搬送手段301の
駆動負荷を軽減することができる。又、撹拌・搬送手段
の駆動負荷の低減により撹拌羽根の変形、破損を防止す
ることができる。更に、仕切部材の上方に設けた撹拌部
材322によって、仕切部材320の格子部に堆積する
トナーを掻き落とすことができ、仕切部材320を設け
たことによるトナー堆積の弊害をなくすことができる。According to the toner hopper constructed as described above, the pressure due to the own weight of the toner is dispersed by the grid-shaped partition member 320, and the driving load of the stirring / conveying means 301 below can be reduced. Further, by reducing the driving load of the stirring / conveying means, it is possible to prevent the stirring blade from being deformed or damaged. Further, the stirring member 322 provided above the partition member can scrape off the toner accumulated on the lattice portion of the partition member 320, and the adverse effect of the toner accumulation due to the provision of the partition member 320 can be eliminated.
【0029】実施例2 本発明による現像剤補給装置の第2の実施例について図
4により説明する。Second Embodiment A second embodiment of the developer replenishing device according to the present invention will be described with reference to FIG.
【0030】本実施例は、図4に示すように、撹拌・搬
送手段301の上方に、角度αの斜面をもたせて仕切部
材330の基端をトナーホッパー201に固定し、仕切
部材330の先端とこの先端に対向するトナーホッパー
壁部との間に連通口331を設けたことを特徴とする。
尚、仕切部材330は開口部のない板状部材とされる。In this embodiment, as shown in FIG. 4, the base end of the partition member 330 is fixed to the toner hopper 201 with a sloped surface having an angle α above the stirring / conveying means 301, and the tip end of the partition member 330 is fixed. A communication port 331 is provided between the toner hopper wall portion and the toner hopper wall portion that faces the tip.
The partition member 330 is a plate-shaped member having no opening.
【0031】また仕切部材の斜面の角度αを、トナーが
堆積する安息角以上に設定すれば、第1実施例における
撹拌手段322、323及び駆動ギヤ306が不要とな
り、さらに低コスト化が実現できる。なお、仕切部材の
斜面の角度αは、55°〜75°が望ましい。Further, if the angle α of the slope of the partition member is set to be equal to or greater than the repose angle at which the toner is deposited, the stirring means 322 and 323 and the drive gear 306 in the first embodiment are unnecessary, and the cost can be further reduced. . The angle α of the slope of the partition member is preferably 55 ° to 75 °.
【0032】上記のように構成されたトナーホッパーに
よれば、トナーの自重による圧力が仕切部材によって分
散し、下方の撹拌・搬送手段の駆動負荷を軽減すること
ができる。また、撹拌・搬送手段の撹拌羽根の変形、破
損を防止することができる。According to the toner hopper configured as described above, the pressure due to the weight of the toner is dispersed by the partition member, and the driving load of the stirring / conveying means below can be reduced. Further, it is possible to prevent deformation and damage of the stirring blade of the stirring / conveying means.
【0033】実施例3 本発明による現像剤補給装置の第3の実施例について図
5により説明する。Third Embodiment A third embodiment of the developer replenishing device according to the present invention will be described with reference to FIG.
【0034】本実施例はトナーホッパー内部の最下部に
軸支された撹拌・搬送手段301の上方に、角度αを持
たせた2個の仕切部材340を、トナーホッパーに交互
に固定したことを特徴とする。尚、第1及び第2実施例
と同様に、仕切部材340の先端とこの先端が対向する
トナーホッパー壁部との間にトナーが通過する連通部3
41を備えている。又、仕切部材340は第2実施例と
同様に開口部のない板状部材とされる。In this embodiment, two partition members 340 having an angle α are alternately fixed to the toner hopper above the stirring / conveying means 301 axially supported at the bottom of the toner hopper. Characterize. As in the first and second embodiments, the communicating portion 3 through which the toner passes between the tip of the partition member 340 and the toner hopper wall portion facing the tip.
41 is provided. Further, the partition member 340 is a plate-shaped member having no opening as in the second embodiment.
【0035】上記のように構成されたトナーホッパーに
よれば、上記実施例によるトナーホッパーの撹拌・搬送
手段の駆動負荷軽減の効果を、更に高めることができ
る。また仕切部材の斜面の角度αを、トナーが堆積する
安息角以上に設定すれば、第1実施例における撹拌手段
322、323及び駆動ギヤ306が不要となり、さら
に低コスト化が実現できる。なお、仕切部材の斜面の角
度αは、55°〜75°が望ましく、各々の仕切部材の
斜面の角度は、同一でも異なってもよい。また、仕切部
材が2個の場合を示したが、3個以上でもよいことは無
論である。According to the toner hopper configured as described above, the effect of reducing the driving load of the stirring / conveying means of the toner hopper according to the above embodiment can be further enhanced. Further, if the angle α of the slope of the partition member is set to be equal to or more than the repose angle at which the toner is accumulated, the stirring means 322 and 323 and the drive gear 306 in the first embodiment are unnecessary, and the cost can be further reduced. The angle α of the slope of the partition member is preferably 55 ° to 75 °, and the angle of the slope of each partition member may be the same or different. Although the case where the number of partition members is two is shown, it is needless to say that the number of partition members may be three or more.
【0036】[0036]
【発明の効果】以上の説明から明らかなように、本発明
による現像剤補給装置は、現像容器を上下方向に分割す
る少なくとも一つ以上の仕切部材を具備し、該仕切部材
に分割された上下部分を連通する連通口を有する構成を
備えたことにより、現像容器の下方に位置する撹拌・搬
送手段にかかる、現像剤の自重による圧力を分散させ、
上記撹拌・搬送手段の駆動負荷を軽減し、変形、破損を
防止することができ、装置の低コスト化と、信頼性の向
上とを達成することができるAs is apparent from the above description, the developer replenishing device according to the present invention comprises at least one partition member for vertically dividing the developer container, and the partition member is divided into upper and lower parts. By providing the structure having the communication port for communicating the parts, the pressure due to the weight of the developer applied to the stirring / conveying means located below the developing container is dispersed,
It is possible to reduce the driving load of the stirring / conveying means, prevent deformation and damage, and achieve cost reduction of the device and improvement of reliability.
【図面の簡単な説明】[Brief description of drawings]
【図1】本発明によるトナーホッパーの第1実施例を示
す正面断面図である。FIG. 1 is a front sectional view showing a first embodiment of a toner hopper according to the present invention.
【図2】図1のトナーホッパーの側面断面図である。FIG. 2 is a side sectional view of the toner hopper of FIG.
【図3】図1のトナーホッパーの仕切部材である。FIG. 3 is a partition member of the toner hopper of FIG.
【図4】本発明によるトナーホッパーの第2実施例を示
す正面断面図である。FIG. 4 is a front sectional view showing a second embodiment of the toner hopper according to the present invention.
【図5】本発明によるトナーホッパーの第3実施例を示
す正面断面図である。FIG. 5 is a front sectional view showing a third embodiment of the toner hopper according to the present invention.
【図6】従来のトナー補給装置の概略構成を示す正面図
である。FIG. 6 is a front view showing a schematic configuration of a conventional toner supply device.
【図7】図6のトナー補給装置のトナーホッパーを示す
側面断面図である。7 is a side sectional view showing a toner hopper of the toner replenishing device of FIG.
201 トナーホッパー(現像容器) 301 撹拌・搬送手段 302 撹拌手段 320、330、340 仕切部材 321、331、341 連通口 201 toner hopper (developing container) 301 stirring / conveying means 302 stirring means 320, 330, 340 partitioning members 321, 331, 341 communication port
Claims (5)
備えた現像剤補給装置において、前記現像容器を上下方
向に分割する少なくとも一つ以上の仕切部材を具備し、
該仕切部材に分割された上下部分を連通する連通口を有
することを特徴とする現像剤補給装置。1. A developer replenishing device having a developing container having an opening at a part of its bottom, comprising at least one partition member for dividing said developing container in the vertical direction,
A developer replenishing device having a communication port for communicating the upper and lower parts divided by the partition member.
の現像剤を撹拌し、底部の前記開口部へ現像剤を搬送せ
しめる撹拌・搬送手段を備えたことを特徴とする請求項
1の現像剤補給装置。2. The agitating / conveying means for agitating the developer in the developing container and for delivering the developer to the opening at the bottom is provided below the partition member. Developer supply device.
とする請求項1又は2の現像剤補給装置。3. The developer replenishing device according to claim 1, wherein the partition member has a lattice shape.
構成することを特徴とする請求項1又は2の現像剤補給
装置。4. The developer replenishing device according to claim 1, wherein the partition member forms a slope having a certain angle.
部の現像剤を撹拌するための撹拌手段を備えたことを特
徴とする請求項1ないし3のうちいずれかひとつの現像
剤補給装置。5. The developer replenishing device according to claim 1, further comprising a stirring unit above the partition member for stirring the developer above the partition member.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6079499A JPH07271171A (en) | 1994-03-25 | 1994-03-25 | Developer supplying device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6079499A JPH07271171A (en) | 1994-03-25 | 1994-03-25 | Developer supplying device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH07271171A true JPH07271171A (en) | 1995-10-20 |
Family
ID=13691622
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6079499A Pending JPH07271171A (en) | 1994-03-25 | 1994-03-25 | Developer supplying device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH07271171A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007088215A (en) * | 2005-09-22 | 2007-04-05 | Doshisha | Magnetic substance material and its manufacturing method |
JP2009080476A (en) * | 2007-09-06 | 2009-04-16 | Kyocera Mita Corp | Toner container |
-
1994
- 1994-03-25 JP JP6079499A patent/JPH07271171A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007088215A (en) * | 2005-09-22 | 2007-04-05 | Doshisha | Magnetic substance material and its manufacturing method |
JP2009080476A (en) * | 2007-09-06 | 2009-04-16 | Kyocera Mita Corp | Toner container |
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