JPS60126669A - Vessel for developer - Google Patents
Vessel for developerInfo
- Publication number
- JPS60126669A JPS60126669A JP58235791A JP23579183A JPS60126669A JP S60126669 A JPS60126669 A JP S60126669A JP 58235791 A JP58235791 A JP 58235791A JP 23579183 A JP23579183 A JP 23579183A JP S60126669 A JPS60126669 A JP S60126669A
- Authority
- JP
- Japan
- Prior art keywords
- developer
- cylinder
- toner
- developer container
- developing device
- 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
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
- G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
- G03G15/0877—Arrangements for metering and dispensing developer from a developer cartridge into the development unit
- G03G15/0881—Sealing of developer cartridges
- G03G15/0886—Sealing of developer cartridges by mechanical means, e.g. shutter, plug
-
- 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
- G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
- G03G15/0865—Arrangements for supplying new developer
- G03G15/0867—Arrangements for supplying new developer cylindrical developer cartridges, e.g. toner bottles for the developer replenishing opening
- G03G15/087—Developer cartridges having a longitudinal rotational axis, around which at least one part is rotated when mounting or using the cartridge
- G03G15/0872—Developer cartridges having a longitudinal rotational axis, around which at least one part is rotated when mounting or using the cartridge the developer cartridges being generally horizontally mounted parallel to its longitudinal rotational axis
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/06—Developing structures, details
- G03G2215/066—Toner cartridge or other attachable and detachable container for supplying developer material to replace the used material
- G03G2215/0663—Toner cartridge or other attachable and detachable container for supplying developer material to replace the used material having a longitudinal rotational axis, around which at least one part is rotated when mounting or using the cartridge
- G03G2215/0665—Generally horizontally mounting of said toner cartridge parallel to its longitudinal rotational axis
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2215/00—Apparatus for electrophotographic processes
- G03G2215/06—Developing structures, details
- G03G2215/066—Toner cartridge or other attachable and detachable container for supplying developer material to replace the used material
- G03G2215/0663—Toner cartridge or other attachable and detachable container for supplying developer material to replace the used material having a longitudinal rotational axis, around which at least one part is rotated when mounting or using the cartridge
- G03G2215/0675—Generally cylindrical container shape having two ends
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Dry Development In Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、電子写真複写機等の現像装置に、現像剤の補
給のために挿入して使用される現像剤容器の改良に関す
るもので属る。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to an improvement in a developer container used by being inserted into a developing device such as an electrophotographic copying machine for replenishing developer. Ru.
一般に電子写真複写機等の静電記録装置にあっては、移
動する電荷保持体上の静電潜像を現像装置において現像
し、静電潜像部に粉体トナーを付着させてトナー像とし
たのち、これを記録紙上に転写・定着することがなされ
ている。トナーは現像とともに消費されるので、消費に
応じてトナーを現像装置に補給することが必要で、補給
するトナーの貯蔵部として現像剤ホウバーがある。現像
剤ホッパーには大量のトナーを内蔵させておいて、これ
が消費し尽(される前に、補給用トナーを収容する現像
剤容器から前記現像剤ホッパー内にトナーの補給がなさ
れる。Generally, in an electrostatic recording device such as an electrophotographic copying machine, an electrostatic latent image on a moving charge carrier is developed in a developing device, and powder toner is attached to the electrostatic latent image area to form a toner image. Thereafter, this is transferred and fixed onto recording paper. Since toner is consumed along with development, it is necessary to replenish toner to the developing device according to consumption, and there is a developer hover as a storage section for replenishing toner. A large amount of toner is stored in the developer hopper, and before the toner is consumed, toner is replenished into the developer hopper from a developer container containing replenishment toner.
周知のよ5に、電子写真複写機においては、使用に伴な
って消費したトナーを補給する必要があるが、従来の補
給用トナーは樹脂製のびんやアルミ箔袋に入れられてい
る。したがって、電子写真複写機等の現像装置にトナー
補給を行なう場合、びんやアルミ箔袋を開封してびん等
を片向けながら、補給ホッパにトナーを投入する。しか
しながら、このようなトナー補給方法では、補給時にト
ナーが空気中に飛散したり、びんの栓等に付着したトナ
ーにより指先が汚れたり、投入中にトナーが周囲にこぼ
れて環境が汚染される場合がある。As is well known, in an electrophotographic copying machine, it is necessary to replenish toner consumed during use, and conventional replenishment toner is stored in resin bottles or aluminum foil bags. Therefore, when replenishing toner to a developing device such as an electrophotographic copying machine, a bottle or an aluminum foil bag is opened and the toner is poured into a replenishment hopper while turning the bottle or the like to one side. However, with this type of toner replenishment method, toner may scatter into the air during replenishment, fingertips may become dirty due to toner adhering to the bottle stopper, or the environment may be contaminated by toner spilling around during replenishment. There is.
又、周知のように、従来のトナー補給装置においては、
−例として周壁の一部にトナー出口となるスロットをそ
れぞれ形成した内拳外二重筒ケース中に補給用トナーを
納め、補給ホッパに同ケースを取付けた後、内筒ケース
を外筒ケースに対して相対的に回転させてトナーを取出
すものが知られているトナー補給装置がある。しかしな
がら、このような構造のトナーケースによるトナー補給
においても、トナーの投入後に、補給ホッパからトナー
ケースを引出す際に、トナーケースのスロ、トの開口部
に付着していたトナーが外部にこぼれたり、手に付着す
る場合がある。また、同トナーケースでは、補給ホッパ
に取付ける前K、不用意に内・外筒を回転させると、収
容したトナーが外部へ流出・散乱し、不測の事故を起こ
す可能性がある。Furthermore, as is well known, in conventional toner replenishment devices,
- For example, store toner for replenishment in an inner and outer double cylinder case that has slots for toner outlets formed in a part of the peripheral wall, and then attach the same case to the replenishment hopper, and then replace the inner cylinder case with the outer cylinder case. There is a known toner replenishing device that removes toner by rotating it relative to the toner. However, even when replenishing toner using a toner case with this type of structure, when the toner case is pulled out from the replenishment hopper after toner has been loaded, the toner adhering to the slots and openings of the toner case may spill out. , may adhere to hands. Furthermore, in the toner case, if the inner and outer cylinders are carelessly rotated before being attached to the replenishment hopper, the stored toner may flow out and scatter outside, potentially causing an unexpected accident.
尚、本明細書において、「トナー」の用語は二成分現像
剤の静電トナーのみならず、−成分現像剤をも含む意味
に用いる。In this specification, the term "toner" is used to include not only the electrostatic toner of the two-component developer but also the -component developer.
本発明は、以上に述べたような現像剤補給容器の現像剤
汚染事故を防止する改良された現像剤容器を提供するこ
とを目的とするものである。SUMMARY OF THE INVENTION An object of the present invention is to provide an improved developer container that prevents the developer supply container from being contaminated with developer as described above.
本発明は、現像剤を収容し且つ開口部を有する円筒と、
該内筒を被包する伸縮性外筒とからなり、こり内筒と外
筒とを相対的に摺動又は回転可能で、且つ現像装置に着
脱自在であることを特徴とする現像剤容器によって達成
される。The present invention includes a cylinder containing a developer and having an opening;
A developer container comprising a stretchable outer cylinder enclosing the inner cylinder, the inner cylinder and the outer cylinder being able to slide or rotate relative to each other, and being detachable from a developing device. achieved.
以下、図面について本発明の実施例の詳細を説明する。 Embodiments of the invention will now be described in detail with reference to the drawings.
第1図は本発明による現像剤容器の一実施例を示す側面
断面図、第2図はその正面図、第3図はA−X断面図で
ある。FIG. 1 is a side sectional view showing one embodiment of a developer container according to the present invention, FIG. 2 is a front view thereof, and FIG. 3 is a sectional view taken along line A-X.
この現像剤容器Aは、現像剤りを収容する内側の円筒状
をなす内筒lと、該内筒lを被包する外側の伸縮性の外
筒2との二重構造をなしている。The developer container A has a double structure consisting of an inner cylindrical inner tube 1 that accommodates a developer and an outer stretchable outer tube 2 that encloses the inner tube 1.
内筒lの一端、即ち第1図の左方には円筒状の封止部材
3が内筒lの内壁に嵌合して密栓している。At one end of the inner cylinder l, that is, on the left side in FIG. 1, a cylindrical sealing member 3 is fitted onto the inner wall of the inner cylinder l for a tight seal.
内筒lの他端、即ち第1図の右方にも深底の円筒形状を
な1封止部材4が内筒lの内壁に嵌合して′密栓状態に
している。また内筒lの周壁には、現像剤の出口となる
細長い溝状開口形状をなすスロットlAが形成しである
。内筒lは合成樹脂材料または紙管に合成樹脂フィルム
をラミネートしたもの等が用いる。封止部材3,4は金
属または合成樹脂製である。尚、前記封止部材3,4の
5ち何れか一方は円筒と一体加工にしてもよい。At the other end of the inner cylinder l, that is, on the right side in FIG. 1, a deep-bottomed cylindrical sealing member 4 is fitted onto the inner wall of the inner cylinder l to form a 'tightly plugged' state. Further, a slot 1A is formed in the peripheral wall of the inner cylinder 1 and has an elongated groove-like opening shape that serves as an outlet for the developer. The inner cylinder l is made of a synthetic resin material or a paper tube laminated with a synthetic resin film. The sealing members 3 and 4 are made of metal or synthetic resin. Incidentally, either one of the sealing members 3 and 4 may be integrally formed with the cylinder.
前記内筒lの外径部左端には口金部材5が固着されてい
る。内筒lの右端には支持部材6が固着され、更にこれ
に取手7が一体又は別体固定されている。この口金部材
5の外周には突起5Aが、支持部材6の外周には突起6
Aがそれぞれ形成されている。これらの突起5A、6A
は同一形状寸法をなしていて、何れも現像装−側のガイ
ドレールに嵌合する。A cap member 5 is fixed to the left end of the outer diameter portion of the inner cylinder l. A support member 6 is fixed to the right end of the inner cylinder l, and a handle 7 is further fixed to this, either integrally or separately. A protrusion 5A is provided on the outer periphery of the base member 5, and a protrusion 6A is provided on the outer periphery of the support member 6.
A is formed respectively. These protrusions 5A, 6A
have the same shape and dimensions, and both fit into the guide rail on the developing device side.
また前記口金部材5と支持部材6の内方の一部には、は
ぼ半円筒形をなすカバー8が架設・固定されている。該
カバー8の内壁は前記内筒1の外周に密接し円周方向に
摺動可能となっていて、内筒lのスロ、) IAを閉鎖
する役割をなしている。Further, a semi-cylindrical cover 8 is installed and fixed on a part of the inside of the cap member 5 and the support member 6. The inner wall of the cover 8 is in close contact with the outer periphery of the inner cylinder 1 and is slidable in the circumferential direction, and serves to close the slot ()IA of the inner cylinder 1.
内筒lのスロットIAは現像剤容器Aが現像装置へ未装
着のときKは図示のように上方に開口してカバー8によ
って閉鎖され、クリ、り装置(不図示)等によって相互
関係が維持されている。When the developer container A is not installed in the developing device, the slot IA of the inner cylinder L opens upward as shown in the figure and is closed by a cover 8, and the mutual relationship is maintained by a clearing device (not shown) or the like. has been done.
口金部材5と支持部材6との間には伸縮性の外筒2、例
えば伸縮自在な蛇腹又は薄いゴムなどの薄膜弾性体を介
在せしめ、それぞれの端面に固着されている。A stretchable outer cylinder 2, for example, a stretchable bellows or a thin film elastic body such as thin rubber, is interposed between the cap member 5 and the support member 6, and is fixed to each end face.
9は口金部材5の外周に嵌合するキャップであり、中央
付近は凹部9Aをなしていて、前記内筒の左側端にほぼ
当接している。キャップ9を現像剤容器Aが未使用時に
被着しておけば、前記口金部材5が誤って押されたりす
ることは防止され、更に取手7が不用意に廻されて容器
内の現像剤が流出管浮遊しても外部圧洩出することはな
いので、環境汚染を生じることはなく清潔である。Reference numeral 9 designates a cap that fits around the outer periphery of the cap member 5, and has a concave portion 9A near the center and substantially contacts the left end of the inner cylinder. If the cap 9 is placed on the developer container A when it is not in use, it is possible to prevent the cap member 5 from being accidentally pushed, and also prevent the developer in the container from being accidentally turned. Even if the outflow pipe floats, there is no external pressure leakage, so there is no environmental pollution and the system is clean.
次に本発明の現像剤容器の使用動作について説明する。Next, the operation of using the developer container of the present invention will be explained.
第4図は現像剤容器Aを現像装置BK挿入して現像剤を
補給する状態の断面図、第5図は該現像装置Bの一例を
示す概念図である。FIG. 4 is a sectional view of a state in which the developer container A is inserted into the developing device BK and developer is supplied, and FIG. 5 is a conceptual diagram showing an example of the developing device B.
現像装置Bは現像剤容器Aを水平方向に受入れる補給室
10と、現像剤容器A内から落下する現像剤を収容する
補給ホウバー11を現像スリーブ稔り上部に設けである
。補給室10の内壁には前記突起5A、6Aに一致する
溝13が設けられ、該溝13によって現像剤容器Aの外
筒2は回転することなく挿入できる。The developing device B is provided with a replenishment chamber 10 for horizontally receiving the developer container A, and a replenishment hover 11 for storing the developer falling from the developer container A at the top of the developing sleeve. A groove 13 corresponding to the projections 5A and 6A is provided on the inner wall of the replenishment chamber 10, and the outer cylinder 2 of the developer container A can be inserted through the groove 13 without rotating.
前記現像剤容器Aを補給室10に挿入するに当っては、
先ず現像剤容器Aのキャップ9を取り外す。When inserting the developer container A into the supply chamber 10,
First, the cap 9 of the developer container A is removed.
突起6Aが溝13に一致して嵌合し、口金部材5が補給
室10の停止部10AK当接停止して挿入操作は終了す
る。かくして伸縮性の外筒2は圧縮されて、内筒lは露
出されて補給室lo内に進入する。The protrusion 6A fits into the groove 13, and the cap member 5 stops contacting the stop portion 10AK of the supply chamber 10, and the insertion operation is completed. In this way, the elastic outer cylinder 2 is compressed, and the inner cylinder l is exposed and enters the supply chamber lo.
次に取手7を半回転させれば、内筒lのみが回転してス
ロットlAは下方に移動し、内筒l内に収容した現像剤
りはスロットIAから流出して補給ホッパー11内に自
然落下して現像剤補給がなされる。Next, when the handle 7 is turned half a turn, only the inner cylinder l rotates and the slot lA moves downward, and the developer stored in the inner cylinder l flows out from the slot IA and naturally flows into the replenishment hopper 11. The developer is replenished by falling.
そして、現像剤容器Aを補給室1oから取り外部ときに
は、取手7を持って半回転すれば、内筒lは半回転して
再びカバー8によってスロッ)IAは閉鎖され、次いで
取手7を引き出せば、可撓性の外筒2は伸びて、内筒l
は外筒2内に収納され、M1図の如き原状に復帰する。Then, when the developer container A is removed from the supply chamber 1o and outside, hold the handle 7 and turn it half a turn, the inner cylinder l will turn half a turn and the slot IA will be closed by the cover 8 again, and then pull out the handle 7. , the flexible outer cylinder 2 is stretched and the inner cylinder l
is housed in the outer cylinder 2 and returns to its original state as shown in Fig. M1.
このように現像剤容器Aを取外すとき、または取外した
後にも、該容器内に残留する現像剤は外部に漏れること
はない。In this way, when the developer container A is removed or even after it is removed, the developer remaining in the container will not leak to the outside.
カ<シて現像剤容器Aの細長いスロットlAから補給ホ
、 バー 11内に落下−した現像剤りは現像スリーブ
12、マグネット140作用によって矢示方向に搬送さ
れ、穂立規制板15によって現像剤の層厚が規制され、
感光体ドラム16上の静電潜像をトナー像すなわち可視
像に現像する。The developer that falls into the bar 11 from the elongated slot lA of the developer container A is conveyed in the direction of the arrow by the action of the developing sleeve 12 and the magnet 140, and the developer is The layer thickness of
The electrostatic latent image on the photoreceptor drum 16 is developed into a toner image, that is, a visible image.
この場合、静電潜像は前記感光体ドラム16の全幅、す
なわち第5図において奥行いっばいに形成されるので、
前述した現)剤りの落下、補給も前記感光体ドラム16
の全幅にわたって均一に行なわれる必要がある。In this case, the electrostatic latent image is formed over the entire width of the photoreceptor drum 16, that is, the entire depth in FIG.
The aforementioned photoreceptor drum 16 is also used for dropping and replenishing the agent.
It must be done uniformly over the entire width.
本発明による現像剤容器Aは、円筒状の内筒lと可撓性
の外筒2を容器として構成しであるので、そり全景を前
記感光体ドラム16の全幅と同じ(長(とることは比較
的容易である。即ち内筒l、外筒2およびスローt ト
IAは長手方向に充分に長くとることができるので、該
容器を用いることにより、均一なムラのないトナー像を
つくり出す特徴も兼ね備えている。Since the developer container A according to the present invention is constituted by a cylindrical inner cylinder l and a flexible outer cylinder 2, the overall view of the sled is the same as the total width of the photoreceptor drum 16. In other words, the inner cylinder 1, the outer cylinder 2, and the throat IA can be made sufficiently long in the longitudinal direction, so that by using this container, a uniform and even toner image can be created. It has both.
以上、説明した現像剤容器は、磁性トナーを用いた一成
分現像剤のトナー容器としても、トナーとキャリヤを用
いる二成分現像方式のトナー補給用容器としても用いる
ことができるものであって、本発明はこれらの何れにも
限蔵されるものではない。The developer container described above can be used both as a toner container for a one-component developer using magnetic toner and as a toner replenishment container for a two-component development method using toner and carrier. The invention is not limited to any of these.
本発明によって、取扱いが容易にして、かつ誤操作によ
る現像剤の流出・飛散がなく、しかも感光体ドラムの全
域に均一な現像剤を供給することができ優れた現像剤容
器の提供が可能となった。The present invention makes it possible to provide an excellent developer container that is easy to handle, prevents developer from flowing out or scattering due to erroneous operation, and can uniformly supply developer to the entire area of the photoreceptor drum. Ta.
第1図、第2図おrび第3図は本発明による現像剤容器
の側面断面図、正面図およびA A/断面図である。第
4図は現像剤容器を現像装置に挿入して現像剤補給状態
を示す断面図、第5図は本発明の現像剤容器の使用例を
示す現像装置の断面図である。
l・・・内筒 IA川用ロ、ト
2・・・可撓性の外# 5・・・口金部材6・・・支持
部材 5A 、6A・・・突起7・・・取手 8・・・
カバー
9・・・キャップ
代理人 桑原義美1, 2, and 3 are a side sectional view, a front view, and an AA/sectional view of a developer container according to the present invention. FIG. 4 is a sectional view showing a state in which a developer container is inserted into the developing device and the developer is supplied, and FIG. 5 is a sectional view of the developing device showing an example of use of the developer container of the present invention. l...Inner cylinder IA river b, g 2...Flexible outer #5...Best member 6...Support member 5A, 6A...Protrusion 7...Handle 8...
Cover 9...Cap agent Yoshimi Kuwahara
Claims (4)
円筒を被包する伸縮性外筒とからなり、上記内筒と外筒
とを相対的に摺動又は回転可能で、且つ現像装置に着脱
自在であることを特徴とする現像剤容器。(1) Consisting of an inner cylinder containing a developer and having an opening, and a stretchable outer cylinder enclosing the cylinder, the inner cylinder and the outer cylinder can be slid or rotated relative to each other, and A developer container characterized by being removably attached to a developing device.
徴とする特許請求の範囲第1項記載の現像剤容器。(2) The developer container according to claim 1, wherein the stretchable outer cylinder is formed in a bellows shape.
ことを特徴とする特許請求の範囲第1項記載の現像剤容
器。(3) The developer container according to claim 1, wherein the stretchable outer cylinder is formed of a thin film elastic body.
給を行なうときには、前記伸縮性外筒が折畳み又は収縮
して、内筒の開閉用開口部が現像装置のホヤバ一部に露
出せしめるようになしたことを特徴とする特許請求の範
囲第1項記載の現像剤容器。(4) When the developer container is attached to the developing device to replenish the developer, the stretchable outer cylinder is folded or contracted, and the opening/closing opening of the inner cylinder is exposed to a part of the squirt area of the developing device. A developer container according to claim 1, characterized in that the developer container is constructed as follows.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58235791A JPS60126669A (en) | 1983-12-13 | 1983-12-13 | Vessel for developer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58235791A JPS60126669A (en) | 1983-12-13 | 1983-12-13 | Vessel for developer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS60126669A true JPS60126669A (en) | 1985-07-06 |
Family
ID=16991308
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP58235791A Pending JPS60126669A (en) | 1983-12-13 | 1983-12-13 | Vessel for developer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS60126669A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6375768A (en) * | 1986-09-19 | 1988-04-06 | Fujitsu Ltd | Toner leakage preventive structure for toner cartridge |
EP0740220A1 (en) * | 1995-04-27 | 1996-10-30 | International Communications Materials, Inc. | Toner dispensing cartridge |
US7266331B2 (en) * | 2002-11-19 | 2007-09-04 | Himes William D | Developer cartridge including rim configured to open and to close a shutter of an image forming apparatus |
US8073368B2 (en) | 2008-09-11 | 2011-12-06 | Ricoh Company Limited | Development device and image forming apparatus |
-
1983
- 1983-12-13 JP JP58235791A patent/JPS60126669A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6375768A (en) * | 1986-09-19 | 1988-04-06 | Fujitsu Ltd | Toner leakage preventive structure for toner cartridge |
EP0740220A1 (en) * | 1995-04-27 | 1996-10-30 | International Communications Materials, Inc. | Toner dispensing cartridge |
EP0740220B1 (en) * | 1995-04-27 | 2001-03-07 | Ricoh Company, Ltd. | Toner dispensing cartridge |
US7266331B2 (en) * | 2002-11-19 | 2007-09-04 | Himes William D | Developer cartridge including rim configured to open and to close a shutter of an image forming apparatus |
US8073368B2 (en) | 2008-09-11 | 2011-12-06 | Ricoh Company Limited | Development device and image forming apparatus |
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