JP2004258552A - Development device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a stable and excellent image by preventing a developer from being supplied one-sidedly in the direction opposite to a heat seal drawing-out direction and uniformly supplying the developer into a developing unit. <P>SOLUTION: A rib shape 10-1 of a developer receiving opening 15 of a developing unit 16 is arranged at an acute angle to the heat seal drawing-out direction 12 and the center line 13 of an agitation member shaft, and the end of the rib 10 of the developing unit 16 on the side of a developer storage case and the end of the rib of a developer supply opening of the developer storage case on the side of the developing unit 16 are arranged at the same position. Thus even when a heat seal 9 is drawn out with a cartridge (AIO) in an oblique or standing state, the developer is kept staying at the position of the rib shape 10-1 and is prevented from being supplied one-sidedly in the direction opposite to the heat seal drawing-out direction 12. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、二成分現像剤を用いる現像装置、特に複写機、プリンタ−、ファクシミリのための現像装置に関するものである。
【０００２】
【従来の技術】
従来から知られている現像装置の構造を図５〜図８に示す。現像装置は、現像剤１を表面に担持して搬送するための現像剤担持体２、現像剤担持体２の内部に配置され現像剤担持体２に現像剤１を担持するための磁界を発生する磁界発生手段（図示せず）、現像剤担持体２に担持した現像剤１の量を規制するための第１の現像剤規制部材３、第１の現像剤規制部材３に現像剤搬送方向上流側から隣接する現像剤収容部４を形成し、現像剤収容部４内の現像剤１を攪拌および帯電させるための撹拌部材５、第１の現像剤規制部材３上流側に過剰のトナ−流入を防ぐ為の第２の現像剤規制部材６により構成された現像ユニット１６と、現像剤１を収容し現像剤供給口１４に図６に示すヒートシール９にてシ−ルされた現像剤容ケ−ス７と、をドッキングして構成される。ヒートシール９は図６及び図３に示すように折り返してある。また、現像ユニット１６と現像剤収容ケ−ス７との間には、図８に示すように現像ユニット受け入れ口１５外周にスポンジ性シ−ル８が貼付してある。
【０００３】
ここで、現像剤１を現像剤収容ケ−ス７から現像ユニット１６）に供給する時期は、感光体ドラムを含んだ感光体ユニット（図示せず）と、トナ−が充填してあるトナ−カ−トリッジ（図示せず）をそれぞれ現像装置にドッキングさせ、カ−トリッジ（以下、ＡＩＯと略記する）としてユーザのところで現像剤収容ケ−ス７に付けられたヒートシール９を引き抜くことにより、現像剤収容ケ−ス７から現像ユニット１６に現像剤１が供給される。
現像剤１は、現像ユニット１６側の現像剤収容部４に供給されるが、一度供給されると故意にＡＩＯを斜めとかにしない限りは現像剤１が移動すると言うことはなく、逆に言えばＡＩＯを斜めにしてしまい、現像剤１を片側に寄せた状態にしてしまった場合、極端に現像剤１が減少した側はトナ−の供給過多になり地汚れ等の画像不良を起こしてしまう。
このように、ＡＩＯをヒートシール引き抜き方向に対して斜めあるいは立ててヒートシールを引き抜いたときの現像剤の片寄りを防止して地汚れの発生を防止するために、第１のシ−ル部材と、第２のシ−ル部材と、キャリア補給口を開閉自在に閉止する開閉機構を備えたものがある（例えば、特許文献１）。
【特許文献１】特開２００２−３４１６３８
【０００４】
【発明が解決しようとする課題】
このとき、現像ユニット１６の現像剤受け入れ口１５にリブ１０を設けていない、あるいはリブ形状１０がヒートシール引き抜き方向１２と撹拌部材軸の中心線１３に対して直角（図７では鉛直）であるとき、ＡＩＯをヒートシール引き抜き方向１２に対して斜めあるいは立ててヒートシール９を引き抜くと、現像剤１が現像ユニット１６内の現像剤収容部４に均一に供給されない。リブ１０を設けていない場合はもちろん、リブ形状１０が直角に配置されていても現像剤１がリブ１０上に留まっていることはなく、ほとんどが片寄って（この場合はヒートシール引き抜き方向１２とは反対側）供給されてしまい、現像剤坦持体軸方向で現像剤１の坦持量に片寄りが出てしまい、現像剤量の少ない側では地汚れ等の画像不良の問題を発生させる可能性がある。
【０００５】
また、現像ユニット１６のリブ１０の現像剤収容ケ−ス７側の端部と、現像剤収容ケ−ス７の現像剤供給口１４のリブ１０の現像ユニット１６側の端部が異なる位置にあるとき、同様にＡＩＯをヒートシール引き抜き方向１２に対して斜めあるいは立ててヒートシールを引き抜くと、現像剤１が現像ユニット１６内に均一に供給されない。それぞれのリブ１０位置が異なっているために現像剤１が供給されたときに、現像ユニット１６側のリブ１０上に留まれなかった現像剤１が片寄って（この場合はヒートシール引き抜き方向１２とは反対側）供給されてしまい、現像剤坦持体軸方向で現像剤１の坦持量に片寄りが出てしまい、現像剤量の少ない側では地汚れ等の画像不良の問題を発生させる可能性がある。
さらに現像ユニット１６の現像剤受け入れ口１５に貼付してあるスポンジ性シ−ル８が、図８に示すように、現像ユニット１と現像剤収容ケ−ス７の外周のみに貼付される形状のときも同様に、ＡＩＯをヒートシール引き抜き方向１２に対して斜めあるいは立ててヒートシール９を引き抜くと、現像剤１が現像ユニット１６内に均一に供給されない場合があり、現像ユニット１６と現像剤収容ケ−ス７とのリブ１０の隙間が大きいときには、片寄って（この場合はヒートシール引き抜き方向１２とは反対側）供給されてしまい、現像剤坦持体軸方向で現像剤１の坦持量に片寄りが出てしまい、現像剤量の少ない側では地汚れ等の画像不良の問題を発生させる可能性がある。
本発明は、ヒートシール引き抜き方向とは反対方向に現像剤が片寄って供給されることを防止して現像剤を現像ユニット内に均一に供給し、安定した良好な画像を得るための現像装置を提供することを目的とする。
【０００６】
【課題を解決するための手段】
本発明の第１の請求項においては、現像ユニットの現像剤受け入れ口のリブ形状の壁面をヒートシール引き抜き方向と撹拌部材軸の中心線に対して鋭角な方向に配置し、現像ユニットのリブの現像剤収容ケ−ス側の端部と、現像剤収容ケ−スの現像剤供給口のリブの現像ユニット側の端部を同じ位置にすることで、ヒートシールを引き抜くときにＡＩＯを斜めあるいは立てた状態で引き抜いても現像剤がリブ形状箇所で留まることができ、ヒートシール引き抜き方向とは反対方向に現像剤が片寄って供給されることはなく、現像ユニットを正常状態（実使用状態）に戻したときに、現像剤が現像ユニット内に均一に供給される。しかし、現像剤がリブ形状箇所に何らかの不具合で留まることができなかったときに、現像剤坦持体から離れたところで現像剤が供給されたとき、その現像剤は片寄って（ヒートシール引き抜き方向とは反対側に）供給されることになり、地汚れ等の画像不良の問題を発生させる可能性がある。そのため、現像剤坦持体が配置している側に現像剤を供給するようにリブ形状を設けたことで、現像剤が何らかの不具合でリブ形状箇所に留まることができなかったとしても、現像剤坦持体側に現像剤が供給されて坦持されるため、ヒートシール引き抜き方向とは反対方向に現像剤が片寄って供給されることはなく、現像ユニット内に均一に供給されるため、安定した良好な画像を得ることができる。
【０００７】
本発明の第２の請求項においては、現像ユニットの現像剤受け入れ口に貼付してあるスポンジ性シ−ルを、現像ユニットと現像剤収容ケ−スのリブ位置にも貼付したことにより、ヒートシールを引き抜くときにＡＩＯを斜めあるいは立てた状態で引き抜いても現像剤が現像ユニットと現像剤収容ケ−スとのリブの隙間から流されてしまうことはなく、さらに安定して現像剤がリブ形状箇所で留まることができ、ヒートシール引き抜き方向とは反対方向に現像剤が片寄って供給されることはなく、現像ユニット内に均一に供給されるため、安定した良好な画像を得ることができる。
しかし、現像ユニットの現像剤受け入れ口のリブ形状をヒートシール引き抜き方向と撹拌部材軸中心線に対して極端に鋭角な位置に配置すると、例えば１０°で配置するとＡＩＯを正常な状態（ヒートシール引き抜き時、撹拌部材軸方向と平行にＡＩＯを置いてヒートシールを引き抜いた場合等）で使用するとき、現像剤がリブ形状上に留まって現像ユニット内に供給されず、地汚れ等の画像不良の問題を発生させる可能性がある。また、例えば８０°で配置するとヒートシールを引き抜くときにＡＩＯを斜めあるいは立てた状態で引き抜くと、現像剤がリブ形状に留まる割合は低く、片寄って（この場合はヒートシール引き抜き方向とは反対側）供給されてしまい、地汚れ等の画像不良の問題を発生させる可能性がある。
本発明の第３の請求項においては、現像ユニットの現像剤受け入れ口のリブ形状をヒートシール引き抜き方向と撹拌部材軸中心に対して鋭角を３０〜６０°としたことにより、現像剤を均一に現像ユニットに供給されることから、安定した良好な画像を得ることができる。
【０００８】
【発明の実施の形態】
以下、本発明の好適な実施の形態を図面に基づいて説明する。なお、図５を併せて参照し、同一符号を用いて説明する。
（実施例１）
【０００９】
図１〜図３は、前記図１の現像ユニット１６に図２現像剤収容ケ−ス７をドッキングさせる際の構成を示しており、現像ユニット１６の現像剤受け入れ口１５のリブ形状１０−１（壁面）の傾斜角度をヒートシール引き抜き方向１２と撹拌部材軸の中心線１３に対して鋭角に設定し、また現像ユニット１６の現像剤受け入れ口１５中心に対して現像剤坦持体２（図５参照）が配置されている側とは反対側（リブ形状１０−１と隣接する壁面を含む）にも鋭角な角度を持ったリブ形状１０−２を配置し、かつ現像ユニット１６のリブ１０の現像剤収容ケ−ス７側の端部と、現像剤収容ケ−ス７の現像剤供給口１４の現像ユニット１６側の端部を同じ位置に配置している。
このため、ヒートシール９を引き抜くときにＡＩＯを斜めあるいは立てた状態で引き抜いても現像剤１がリブ形状１０−１箇所で留まることができ、また現像剤１が何らかの不具合でリブ形状１０−１箇所に留まることができなかったとしても、現像ユニット１６の現像剤受け入れ口１５中心に対して現像剤坦持体２が配置されている側とは反対側にも鋭角な角度を持ったリブ形状１０−２を設けているため、現像剤坦持体２側に現像剤１が供給されて坦持されるため、ヒートシール引き抜き方向１２とは反対方向に現像剤１が片寄って供給されることはなく、現像ユニット１６内に均一に供給される。
【００１０】
（実施例２）
図４は、図１の現像ユニット１６に図２現像剤収容ケ−ス７をドッキングさせる際に、現像ユニット１６の現像剤受け入れ口１５外周に貼付するようにしたリブ１０付きのスポンジ性シ−ル８を示している。このように、現像ユニット１６の現像剤受け入れ口１５に貼付するスポンジ性シ−ル８を、現像ユニット１６と現像剤収容ケ−ス７のリブ１０位置にも貼付したことにより、ヒートシール９を引き抜くときにＡＩＯを斜めあるいは立てた状態で引き抜いても現像剤１が現像ユニット１６と現像剤収容ケ−ス７とのリブ１０の隙間から流されてしまうことはなく、さらに安定して現像剤１がリブ形状１０−１，１０−２箇所で留まることができ、ヒートシール引き抜き方向１２とは反対方向に現像剤１が片寄って供給されることはなく、現像ユニット１６内に均一に供給される。
（実施例３）
図３では、現像ユニット１６の現像剤受け入れ口１５のリブ形状１０−１，１０−２をヒートシール引き抜き方向１２と撹拌部材軸中心線１３に対する角θを３０〜６０°の鋭角形状としている。このようにリブ形状（１０−１，１０−２）を３０〜６０°の鋭角形状としたことにより、現像剤１は均一に現像ユニット１６に供給されるようになる。リブ形状が３０°未満だとヒートシールを斜めあるいは立てた状態で引き抜き、製品使用状態にしたときに現像剤１がリブ形状１０上に留まる量が多く、現像ユニット１６内の現像剤収容部４に不均一に供給され、６０°を越えるとリブ形状１０上に留まる現像剤１の量が少なく、現像ユニット１６内の現像剤収容部４に現像剤１が片寄って供給されてしまう。
【００１１】
【発明の効果】
請求項１の現像装置においては、現像ユニットの現像剤受け入れ口のリブ形状をヒートシール引き抜き方向と撹拌部材軸の中心線に対して鋭角な位置に配置し、また現像ユニットの現像剤受け入れ口中心に対して現像剤坦持体が配置されている側とは反対側（隣接する壁面）にも鋭角な角度を持ったリブ形状を配置し、かつ現像ユニットのリブの現像剤収容ケ−ス側の端部と、現像剤収容ケ−スの現像剤供給口のリブの現像ユニット側の端部を同じ位置にすることで、ヒートシールを引き抜くときにＡＩＯを斜めあるいは立てた状態で引き抜いても現像剤がリブ形状箇所で留まることができ、また現像剤が何らかの不具合でリブ形状箇所に留まることができなかったとしても、現像剤坦持体側に現像剤が供給されて坦持されるため、ヒートシール引き抜き方向とは反対方向に現像剤が片寄って供給されることはなく、現像剤が現像ユニット内に均一に供給されるため、安定した良好な画像を得ることができる。
【００１２】
請求項２の現像装置においては、現像ユニットの現像剤受け入れ口に貼付してあるスポンジ性シ−ルを、現像ユニットと現像剤収容ケ−スのリブ位置にも貼付したことにより、ヒートシールを引き抜くときにＡＩＯを斜めあるいは立てた状態で引き抜いても現像剤が現像ユニットと現像剤収容ケ−スとのリブの隙間から流されてしまうことはなく、さらに安定して現像剤がリブ形状箇所で留まることができ、ヒートシール引き抜き方向とは反対方向に現像剤が片寄って供給されることはなく、現像ユニット内に均一に供給されるため、安定した良好な画像を得ることができる。
請求項３の現像装置においては、現像ユニットの現像剤受け入れ口のリブ形状をヒートシール引き抜き方向と撹拌部材軸中心に対して３０〜６０°の鋭角としたことにより、現像剤が均一に現像ユニットに供給されることから、安定した良好な画像を得ることができる。
【図面の簡単な説明】
【図１】本発明における現像剤収容ケ−スがドッキングされる現像ユニット部分の構成を示す斜視図である。
【図２】図１の現像ユニットを図５の上方から見た平面図である。
【図３】本発明におけるリブ形状の鋭角とヒートシールの引き抜き方向の関係を示す説明図である。
【図４】本発明におけるスポンジ性シ−ルの形状を示す平面図である。
【図５】従来から知られている現像装置の構造を示す切断側面図である。
【図６】現像ユニットにドッキングされる現像剤収容ケ−スを斜め下方から見た斜視図である。
【図７】現像剤収容ケ−スがドッキングされる従来の現像ユニット部分の斜視図である。
【図８】従来におけるスポンジ性シ−ルの形状を示す平面図である。
【符号の説明】
１ 現像剤、２ 現像剤担持体、３ 第１の現像剤規制部材、４ 現像剤収容部、５ 撹拌部材、６ 第２の現像剤規制部材、７ 現像剤収容ケ−ス、８ スポンジ性シ−ル、９ ヒートシール、１０ リブ、１０−１ リブ形状、１０−２リブ形状、１２ ヒートシール引き抜き方向、１３ 撹拌部材軸の中心線、１４ 現像剤供給口、１５ 現像ユニット受け入れ口、１６ 現像ユニット。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a developing device using a two-component developer, and more particularly to a developing device for a copying machine, a printer, and a facsimile.
[0002]
[Prior art]
FIGS. 5 to 8 show the structure of a conventionally known developing device. The developing device is provided with a developer carrier 2 for carrying and transporting the developer 1 on the surface thereof, and a magnetic field for carrying the developer 1 on the developer carrier 2 which is disposed inside the developer carrier 2. Magnetic field generating means (not shown), a first developer regulating member 3 for regulating the amount of the developer 1 carried on the developer carrier 2, and a developer conveying direction to the first developer regulating member 3. An adjacent developer accommodating portion 4 is formed from the upstream side, and a stirring member 5 for agitating and charging the developer 1 in the developer accommodating portion 4 and an excessive toner upstream of the first developer regulating member 3. A developer unit 16 constituted by a second developer regulating member 6 for preventing inflow, and a developer containing the developer 1 and sealed in a developer supply port 14 by a heat seal 9 shown in FIG. The container 7 is docked. The heat seal 9 is folded back as shown in FIGS. As shown in FIG. 8, a sponge seal 8 is attached to the outer periphery of the developing unit receiving port 15 between the developing unit 16 and the developer accommodating case 7.
[0003]
Here, the timing of supplying the developer 1 from the developer accommodating case 7 to the developing unit 16) is determined by a photoconductor unit (not shown) including a photoconductor drum and a toner filled toner. Each cartridge (not shown) is docked to the developing device, and a heat seal 9 attached to the developer accommodating case 7 is pulled out as a cartridge (hereinafter, abbreviated as AIO) at a user, thereby removing the cartridge. The developer 1 is supplied from the developer storage case 7 to the developing unit 16.
The developer 1 is supplied to the developer accommodating section 4 on the side of the developing unit 16. However, once supplied, the developer 1 does not move unless the AIO is deliberately inclined. For example, if the AIO is inclined and the developer 1 is brought to one side, the side where the developer 1 is extremely reduced becomes excessive in toner supply and causes image defects such as background contamination. .
As described above, in order to prevent the developer from being biased when the heat seal is pulled out with the AIO inclined or upright with respect to the heat seal pulling direction and to prevent the occurrence of background contamination, the first seal member is used. And a second seal member, and an opening / closing mechanism for opening and closing the carrier supply port so as to be able to open and close (for example, Patent Document 1).
[Patent Document 1] JP-A-2002-341638
[0004]
[Problems to be solved by the invention]
At this time, the rib 10 is not provided in the developer receiving port 15 of the developing unit 16, or the rib shape 10 is perpendicular to the heat seal drawing direction 12 and the center line 13 of the stirring member shaft (vertical in FIG. 7). At this time, if the heat seal 9 is pulled out while the AIO is inclined or set up with respect to the heat seal drawing direction 12, the developer 1 is not uniformly supplied to the developer accommodating section 4 in the developing unit 16. In the case where the ribs 10 are not provided, the developer 1 does not stay on the ribs 10 even if the rib shapes 10 are arranged at right angles. Is supplied on the opposite side), and the amount of the developer 1 is shifted in the axial direction of the developer carrier. On the side where the amount of the developer is small, a problem of image defects such as background contamination occurs. there is a possibility.
[0005]
The end of the rib 10 of the developing unit 16 on the side of the developer accommodating case 7 and the end of the rib 10 of the developer supply port 14 of the developer accommodating case 7 on the side of the developing unit 16 are located at different positions. At one time, if the heat seal is pulled out while the AIO is similarly inclined or set up with respect to the heat seal pulling direction 12, the developer 1 is not uniformly supplied into the developing unit 16. When the developer 1 is supplied because the positions of the ribs 10 are different from each other, the developer 1 that has not remained on the rib 10 on the side of the developing unit 16 is offset (in this case, the heat seal pulling direction 12 is On the opposite side), the supplied amount of the developer 1 is deviated in the axial direction of the developer carrier, so that the amount of the developer 1 is deviated. There is.
Further, as shown in FIG. 8, the sponge seal 8 attached to the developer receiving port 15 of the developing unit 16 has a shape which is attached only to the outer periphery of the developing unit 1 and the developer accommodating case 7. Similarly, when the heat seal 9 is pulled out while the AIO is inclined or set up with respect to the heat seal pulling direction 12, the developer 1 may not be uniformly supplied into the developing unit 16. When the gap between the rib 10 and the case 7 is large, the rib 10 is supplied in a one-sided manner (in this case, on the opposite side to the heat-seal pull-out direction 12), and the amount of the developer 1 carried in the axial direction of the developer carrier. , And there is a possibility that a problem of an image defect such as background contamination may occur on the side where the amount of the developer is small.
The present invention provides a developing device for preventing the developer from being supplied one-sidedly in the direction opposite to the heat seal pulling-out direction, uniformly supplying the developer into the developing unit, and obtaining a stable and good image. The purpose is to provide.
[0006]
[Means for Solving the Problems]
In the first aspect of the present invention, the rib-shaped wall surface of the developer receiving port of the developing unit is disposed at an acute angle with respect to the heat seal drawing direction and the center line of the shaft of the stirring member. By setting the end of the developer accommodating case side and the end of the developer supply port rib of the developer accommodating case on the developing unit side to the same position, the AIO can be inclined or pulled out when the heat seal is pulled out. Even if the developer is pulled out in the upright state, the developer can stay at the rib-shaped portion, and the developer is not supplied in a direction opposite to the heat seal pulling direction, so that the developing unit is in a normal state (actual use state). When returned to the above, the developer is uniformly supplied into the developing unit. However, when the developer is not able to stay at the rib-shaped portion due to some trouble, and when the developer is supplied at a position away from the developer carrier, the developer is biased (in the heat-seal pulling-out direction). Is supplied to the opposite side), which may cause a problem of image defects such as background contamination. Therefore, by providing the rib shape so as to supply the developer to the side where the developer carrier is disposed, even if the developer cannot stay at the rib-shaped portion due to some trouble, the developer Since the developer is supplied and carried on the carrier side, the developer is not supplied one-sidedly in the direction opposite to the heat-seal pull-out direction, and is uniformly supplied into the developing unit, so that a stable A good image can be obtained.
[0007]
According to the second aspect of the present invention, the sponge seal attached to the developer receiving port of the developing unit is also attached to the rib positions of the developing unit and the developer accommodating case, so that heat is released. Even if the AIO is pulled out obliquely or upright when pulling out the seal, the developer does not flow from the gap between the ribs between the developing unit and the developer accommodating case, and the developer is more stably released. The developer can remain in the shape portion, and the developer is not supplied in one direction in the direction opposite to the heat seal pull-out direction, but is supplied uniformly in the developing unit, so that a stable and good image can be obtained. .
However, if the rib shape of the developer receiving port of the developing unit is disposed at an extremely acute position with respect to the heat seal pull-out direction and the center line of the stirring member axis, if the rib is disposed at, for example, 10 °, the AIO is in a normal state (heat seal pull-out). When the heat seal is pulled out with the AIO placed parallel to the axial direction of the stirring member), the developer remains on the rib shape and is not supplied into the developing unit, resulting in image defects such as background contamination. May cause problems. If the AIO is pulled out at an angle of 80 ° when the heat seal is pulled out, for example, if the AIO is pulled out obliquely or in an upright position, the ratio of the developer remaining in the rib shape is low, and the developer is biased (in this case, the side opposite to the heat seal pulling direction) ) May be supplied, causing a problem of image defects such as background contamination.
In the third aspect of the present invention, the developer is uniformly formed by setting the rib shape of the developer receiving port of the developing unit to an acute angle of 30 to 60 ° with respect to the heat seal drawing direction and the center of the stirring member axis. Since the image is supplied to the developing unit, a stable and good image can be obtained.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. The description will be given using the same reference numerals with reference to FIG.
(Example 1)
[0009]
FIGS. 1 to 3 show a configuration in which the developer accommodating case 7 of FIG. 2 is docked to the developing unit 16 of FIG. 1, and the rib shape 10-1 of the developer receiving port 15 of the developing unit 16 is shown. The inclination angle of the (wall) is set to be an acute angle with respect to the heat seal drawing direction 12 and the center line 13 of the stirring member shaft, and the developer carrier 2 (see FIG. 5) is also provided on the opposite side (including the wall surface adjacent to the rib shape 10-1) on the side opposite to the side on which the rib shape 10-2 is disposed. The end of the developer accommodating case 7 on the side of the developing unit 16 and the end of the developer supply port 14 of the developer accommodating case 7 on the side of the developing unit 16 are arranged at the same position.
For this reason, even if the AIO is pulled out obliquely or upright when the heat seal 9 is pulled out, the developer 1 can stay at the rib-shaped 10-1 portion. Even if it cannot be stopped at the place, the rib shape having an acute angle also on the side opposite to the side where the developer carrier 2 is arranged with respect to the center of the developer receiving port 15 of the developing unit 16 Since the developer 1 is supplied and carried on the developer carrier 2 side due to the provision of 10-2, the developer 1 is biased and supplied in a direction opposite to the heat seal drawing direction 12. , And is uniformly supplied into the developing unit 16.
[0010]
(Example 2)
FIG. 4 shows a sponge case with a rib 10 which is attached to the outer periphery of the developer receiving port 15 of the developing unit 16 when the developer accommodating case 7 of FIG. 8 is shown. In this manner, the heat seal 9 is attached by attaching the sponge seal 8 to the developer receiving port 15 of the developing unit 16 at the rib 10 position of the developing unit 16 and the developer accommodating case 7. Even when the AIO is pulled out at an angle or in an upright position, the developer 1 does not flow through the gap between the ribs 10 between the developing unit 16 and the developer accommodating case 7, and the developer is more stably provided. 1 can remain at the rib shapes 10-1 and 10-2, and the developer 1 is not supplied in one direction in the direction opposite to the heat seal pulling-out direction 12, but is uniformly supplied into the developing unit 16. You.
(Example 3)
In FIG. 3, the rib shapes 10-1 and 10-2 of the developer receiving port 15 of the developing unit 16 have an acute angle of 30 to 60 ° with respect to the heat seal drawing direction 12 and the center line 13 of the stirring member axis. By thus forming the rib shape (10-1, 10-2) into an acute angle of 30 to 60 °, the developer 1 can be uniformly supplied to the developing unit 16. If the rib shape is less than 30 °, the heat seal is pulled out obliquely or in an upright state, and when the product is used, a large amount of the developer 1 remains on the rib shape 10. When the angle exceeds 60 °, the amount of the developer 1 remaining on the rib shape 10 is small, and the developer 1 is supplied to the developer accommodating portion 4 in the developing unit 16 in one direction.
[0011]
【The invention's effect】
In the developing device according to the present invention, the rib shape of the developer receiving port of the developing unit is disposed at an acute angle with respect to the heat seal pulling-out direction and the center line of the axis of the stirring member. A rib shape having an acute angle is also disposed on the side (adjacent wall surface) opposite to the side on which the developer carrier is disposed, and the rib of the developing unit is on the side of the developer accommodating case. And the end of the rib of the developer supply port of the developer accommodating case on the developing unit side at the same position, so that the AIO can be pulled out obliquely or upright when the heat seal is pulled out. Since the developer can stay at the rib-shaped portion, and even if the developer cannot stay at the rib-shaped portion due to some trouble, the developer is supplied to and supported on the developer carrier side, Heatshi The Le drawing direction never developer in the opposite direction is supplied is offset, because the developer is uniformly supplied into the developing unit, it is possible to obtain a stable and excellent images.
[0012]
In the developing device according to the second aspect, the heat seal is provided by attaching the sponge seal attached to the developer receiving port of the developing unit to the rib positions of the developing unit and the developer accommodating case. Even when the AIO is pulled out at an angle or in an upright position, the developer does not flow through the gap between the ribs between the developing unit and the developer accommodating case. The developer is not supplied one-sidedly in the direction opposite to the heat-seal pull-out direction and is uniformly supplied into the developing unit, so that a stable and good image can be obtained.
In the developing device according to the third aspect, the ribs of the developer receiving port of the developing unit are formed at an acute angle of 30 to 60 ° with respect to the heat-seal-pulling-out direction and the axis of the agitating member, so that the developer is uniformly distributed. , A stable and good image can be obtained.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a configuration of a developing unit portion to which a developer accommodating case according to the present invention is docked.
FIG. 2 is a plan view of the developing unit of FIG. 1 as viewed from above in FIG.
FIG. 3 is an explanatory diagram showing a relationship between an acute angle of a rib shape and a drawing direction of a heat seal in the present invention.
FIG. 4 is a plan view showing a shape of a spongy seal in the present invention.
FIG. 5 is a cut-away side view showing the structure of a conventionally known developing device.
FIG. 6 is a perspective view of the developer accommodating case docked to the developing unit as viewed obliquely from below.
FIG. 7 is a perspective view of a conventional developing unit in which a developer accommodating case is docked.
FIG. 8 is a plan view showing the shape of a conventional spongy seal.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Developer, 2 developer carrier, 3rd developer regulating member, 4 developer accommodating section, 5 stirring member, 6 second developer regulating member, 7 developer accommodating case, 8 sponge sheet 9 heat seal, 10 ribs, 10-1 rib shape, 10-2 rib shape, 12 heat seal pull-out direction, 13 center line of stirring member shaft, 14 developer supply port, 15 developing unit receiving port, 16 development unit.

Claims (3)

トナ−及び磁性粒子を含む現像剤を表面に担持して搬送するための現像剤担持体と、該現像剤担持体の内側に配置され該現像剤担持体に現像剤を担持する為の磁界を発生する磁界発生手段と、現像剤担持体に担持した現像剤の量を規制する第１の現像剤規制部材と、第１の現像剤規制部材上流側に過剰のトナ−流入を防ぐ為の第２の規制部材とを有し、第１及び第２の現像剤規制部材間に現像剤収容部を形成し、該現像剤収容部に収容された現像剤を撹拌及び帯電させるための撹拌部材と、現像剤収容部に現像剤搬送方向上流側から隣接し現像剤担持体に対向する位置に現像剤供給口を有する現像剤収容ケ−スと、を備え、現像剤の移動により現像剤収容ケ−ス内のトナ−を現像剤供給口から現像剤中に取り込む現像ユニットであって、現像ユニットの現像剤を受け入れる受け入れ口外周にはスポンジ性のシ−ルが貼付され、現像剤供給口がヒートシールにてシ−ルされている現像剤収容ケ−スを、撹拌部材の上方であってかつ撹拌部材の軸方向に沿って前記現像ユニットにドッキングさせた現像装置において、現像剤収容ケ−スのヒートシールを引き抜いて、現像剤が現像ユニットに供給されるときの現像ユニットの受け入れ口のリブ形状を、ヒートシール引き抜き方向と撹拌部材軸の中心線に対して鋭角な角度を持った位置に配置し、また現像ユニットの受け入れ口中心に対して現像剤坦持体が配置されている側とは反対側にも鋭角な角度を持ったリブ形状を配置し、かつ現像ユニットの受け入れ口のリブの現像剤収容ケ−ス側の端部は、現像剤収容ケ−スの現像剤供給口の現像ユニット側の端部と同じ位置にあることを特徴とする現像装置。A developer carrying member for carrying and transporting a developer containing toner and magnetic particles on a surface thereof; and a magnetic field arranged inside the developer carrying member for carrying the developer on the developer carrying member. Means for generating a magnetic field, a first developer regulating member for regulating the amount of developer carried on the developer carrier, and a second developer regulating member for preventing excessive toner from flowing upstream of the first developer regulating member. And a stirring member for stirring and charging the developer contained in the developer containing portion, the developer containing portion being formed between the first and second developer regulating members. A developer storage case adjacent to the developer storage section from the upstream side in the developer transport direction and having a developer supply port at a position facing the developer carrying member, the developer storage case being moved by the developer. A developing unit that takes in toner in the developer through a developer supply port into the developer, A sponge-like seal is attached to the outer periphery of the receiving opening for receiving the knit developer, and the developer accommodating case, in which the developer supply opening is sealed by heat sealing, is placed above the stirring member. In the developing device docked to the developing unit along the axial direction of the stirring member, the heat seal of the developer accommodating case is pulled out to receive the developing unit when the developer is supplied to the developing unit. Is arranged at a position having an acute angle with respect to the heat seal pulling-out direction and the center line of the stirring member shaft, and the developer carrier is arranged at the center of the receiving port of the developing unit. A rib shape having an acute angle is also arranged on the side opposite to the side, and the end of the rib of the receiving port of the developing unit on the side of the developer housing case is supplied with the developer supply of the developer housing case. Mouth Developing apparatus is characterized in that the same position as the end portion of the unit side. 請求項１の現像装置において、現像ユニットの現像剤受け入れ口に貼付してあるスポンジ性シ−ルを、現像ユニットと現像剤収容ケ−スのリブ位置にも貼付したことを特徴とする現像装置。2. The developing device according to claim 1, wherein the sponge seal attached to the developer receiving port of the developing unit is also attached to the rib positions of the developing unit and the developer accommodating case. . 請求項１、２の現像装置において、前記リブ形状の鋭角な角度は３０〜６０°であることを特徴とする現像装置。3. The developing device according to claim 1, wherein the acute angle of the rib shape is 30 to 60 [deg.].

Images