JPH0192760A - Process cartridge for image forming device - Google Patents
Process cartridge for image forming deviceInfo
- Publication number
- JPH0192760A JPH0192760A JP62249955A JP24995587A JPH0192760A JP H0192760 A JPH0192760 A JP H0192760A JP 62249955 A JP62249955 A JP 62249955A JP 24995587 A JP24995587 A JP 24995587A JP H0192760 A JPH0192760 A JP H0192760A
- Authority
- JP
- Japan
- Prior art keywords
- developer
- gap
- process cartridge
- carrier
- container
- 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
- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000008569 process Effects 0.000 title claims abstract description 31
- 230000001105 regulatory effect Effects 0.000 claims description 23
- 230000002265 prevention Effects 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 230000035939 shock Effects 0.000 abstract description 3
- 230000007423 decrease Effects 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 description 12
- 238000009434 installation Methods 0.000 description 8
- 238000011161 development Methods 0.000 description 5
- 108091008695 photoreceptors Proteins 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 241000519995 Stachys sylvatica Species 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
- G03G21/18—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge, whereby the process cartridge comprises at least two image processing means in a single unit
- G03G21/1803—Arrangements or disposition of the complete process cartridge or parts thereof
- G03G21/1828—Prevention of damage or soiling, e.g. mechanical abrasion
- G03G21/1832—Shielding members, shutter, e.g. light, heat shielding, prevention of toner scattering
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
- G03G21/0005—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium
- G03G21/0011—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium using a blade; Details of cleaning blades, e.g. blade shape, layer forming
- G03G21/0029—Details relating to the blade support
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
- G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
- G03G2221/1606—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for the photosensitive element
- G03G2221/1609—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for the photosensitive element protective arrangements for preventing damage
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
- G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
- G03G2221/163—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for the developer unit
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
- G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
- G03G2221/1648—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts using seals, e.g. to prevent scattering of toner
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
- G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
- G03G2221/18—Cartridge systems
- G03G2221/183—Process cartridge
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Vision & Pattern Recognition (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・静電記録装置等の画像形成装
置、さらに詳しくは現像のための諸機能を備え、画像形
成装置に対して着脱可能としたユニット式のプロセスカ
ートリッジに関する。Detailed Description of the Invention (Industrial Field of Application) The present invention relates to an image forming apparatus such as an electrophotographic copying machine or an electrostatic recording device, and more specifically, to an image forming apparatus equipped with various functions for development. This invention relates to a removable unit type process cartridge.
（従来の技術及び問題点）
プロセスカートリッジ着脱式の画像形成装置は、画像形
成のための全工程機器のうち１例えば像担持体（電子写
真感光体・静電記録誘電体など）・現像装置・クリーニ
ング装置・帯電器等の工程器について、それ等全体を一
括して画像形成装置本体に対して着脱交換できるプロセ
スカートリッジ（ユニット）として共通のカートリッジ
ハウジングにまとめて組付けた構成の装置である。(Prior Art and Problems) An image forming apparatus with a removable process cartridge is one of all the process equipment for image formation, such as an image carrier (electrophotographic photoreceptor, electrostatic recording dielectric, etc.), a developing device, This apparatus has a structure in which process devices such as a cleaning device and a charger are assembled into a common cartridge housing as a process cartridge (unit) that can be attached to and removed from the main body of the image forming apparatus.
かかるプロセスカートリッジは、保守・サービ磁性の向
上あるいは該カートリッジの交換による多色現像の可能
化又装置の小型・軽量化等の諸利点かあり多く採用され
ている。Such process cartridges are widely used because of their various advantages, such as improved maintenance and serviceability, ability to perform multicolor development by replacing the cartridge, and reduction in size and weight of the apparatus.
一方、現像装置は、現像剤担持体にトナーのみを担持さ
せこれを潜像担持体に移行せしめる一成分現像装置と、
現像剤担持体には磁性のキャリア粒子を担持せしめ該キ
ャリアにトナーを付着せしめて磁気ブラシを形成し、ト
ナーのみを潜像担持体に移行せしめる二成分現像装置と
があり、両装置共にその原理は公知でありその原理の説
明はここては割愛する。そして、両装置共に、一定厚の
トナーを現像剤担持体表面に担持するために、−定間隙
をもって規制部材を配している場合が多いか、キャリア
をもって磁気ブラシを形成する二成分現像装置にあって
は現像剤担持体面での現像剤塗布量が多くできるのが特
徴であり、そのために上記間隙も大きくなっている。On the other hand, the developing device includes a one-component developing device that causes a developer carrier to carry only toner and transfers it to a latent image carrier;
There is a two-component developing device in which a developer carrier carries magnetic carrier particles and toner is attached to the carrier to form a magnetic brush, and only the toner is transferred to the latent image carrier. Both devices have the same principle. is well known, and an explanation of its principle will be omitted here. In both devices, in order to carry a constant thickness of toner on the surface of the developer carrier, a regulating member is often arranged with a certain gap, or a two-component developing device that forms a magnetic brush with the carrier. One of the features is that a large amount of developer can be applied on the surface of the developer carrier, and therefore the gap is also large.
上記のととくのプロセスカートリッジでは、−成分現像
装置は上記間隙が小さいのて基稈問題とならないか、二
成分現像装置では上記間隙が太きいために、使用前の例
えば搬送中の取扱時に振動・衝撃等によってマグネット
では拘束しきれずに上記間隙から現像剤が洩出し、汚れ
、機構部分での障害、さらには性能の低下という好まし
くない現象をもたらしていた。In the above-mentioned particular process cartridges, the -component developing device has a small gap, so there is no problem with base culm, or the two-component developing device has a large gap, so it vibrates during handling before use, for example, during transportation. - Due to impact or the like, the developer could not be fully restrained by the magnet and leaked out from the gap, resulting in undesirable phenomena such as staining, damage to mechanical parts, and even a decline in performance.
（問題点を解決するための手段）
本発明は、上述の問題点を解決し、プロセスカートリッ
ジか、使用前すなわち未開封の状態で現像装置の外側に
スタート現像剤が塗布（洩出）することのないように、
現像剤担持体と規制部材との間隙を使用前にあっては所
定の値より狭くし、プロセスカートリッジ設置以降、す
なわち使用時には所定の値にすることとして、洩出現像
剤による取扱時の不都合を防止することのできるプロセ
スカートリッジを提供することを目的とするものである
。(Means for Solving the Problems) The present invention solves the above-mentioned problems, and prevents the start developer from being applied (leakage) to the outside of the process cartridge or the developing device before use, that is, in an unopened state. so that there is no
The gap between the developer carrier and the regulating member is made narrower than a predetermined value before use, and is set to the predetermined value after the process cartridge is installed, that is, during use, to prevent inconveniences during handling due to leaked developer. The object of the present invention is to provide a process cartridge that can prevent such problems.
本発明は、上記目的の達成のために、
少なくとも潜像担持体と、該潜像担持体の表面に形成さ
れた潜像を顕像する二成分磁気ブラシを形成するための
現像装置を包含し、画像形成装置本体に対して着脱自在
なプロセスカートリッジにおいて、
プロセスカートリッジは、現像剤容器の背部にトナー貯
蔵容器を有し、上記現像剤容器内に配されて無端運動す
る現像剤担持体が現像剤容器の前部開口から一部突出し
、該現像剤担持体の内部には固定マグネットが配設され
、上記開口の現像剤担持体の上流側には該現像剤担持体
との間に所定間隙をもって配された現像剤塗布厚の規制
のための規制部材をそして下流側には飛散防止シールと
を有し、さらには現像剤容器とトナー貯蔵容器とは抜出
可能なシール部材が設けられると共に、上記規制部材と
現像剤担持体との間の間隙には間隙調整部材が設置され
ている、
ことにより構成される。In order to achieve the above object, the present invention includes at least a latent image carrier and a developing device for forming a two-component magnetic brush that develops a latent image formed on the surface of the latent image carrier. , a process cartridge that is detachable from the main body of an image forming apparatus, the process cartridge has a toner storage container on the back of a developer container, and a developer carrier disposed in the developer container that moves endlessly performs development. A fixed magnet is disposed inside the developer carrier that partially protrudes from the front opening of the developer container, and a predetermined gap is provided between the developer carrier and the developer carrier on the upstream side of the developer carrier. The developer container and the toner storage container are provided with a regulating member for regulating the developer coating thickness and a scattering prevention seal on the downstream side, and a removable sealing member is provided between the developer container and the toner storage container. , a gap adjusting member is installed in the gap between the regulating member and the developer carrier.
（実施例） 以下、本発明の第一実施例装置について説明する。(Example) A first embodiment of the device of the present invention will be described below.
同図において、ｌは潜像担持体としての感光ドラム、２
は感光ドラム上の潜像を現像する二成分磁気ブラシ現像
装置てあり、上記感光ドラムの周囲には該感光ドラム上
の残留物を清掃するクリーニング装ｇ！１３、感光ドラ
ムにチャージを与えるための帯電装置４か配置されてい
る。一方、現像装置２は、現像剤担持体である現像スリ
ーブ５と、その内部に固定された磁界発生手段であると
ころのマグネットを有し、現像剤容器１２内にはキャリ
アとトナーの混合物からなるスタート剤、そして背後の
トナー貯蔵容器１３には補給トナー９が収容されている
。また現像スリーブ５の上方位置には、該現像スリーブ
５との間に一定間隙を保って磁気ブラシの長さを規制す
る規制部材１４が設けられている。In the figure, l is a photosensitive drum as a latent image carrier, 2
G! is a two-component magnetic brush developing device that develops a latent image on a photosensitive drum, and a cleaning device is provided around the photosensitive drum to clean residue on the photosensitive drum. 13. A charging device 4 for charging the photosensitive drum is disposed. On the other hand, the developing device 2 has a developing sleeve 5 which is a developer carrying member and a magnet which is a magnetic field generating means fixed inside the developing sleeve 5, and a developer container 12 containing a mixture of carrier and toner. A starter agent and a toner storage container 13 at the rear contain replenishment toner 9. Further, a regulating member 14 is provided above the developing sleeve 5 to regulate the length of the magnetic brush by maintaining a constant gap between the developing sleeve 5 and the developing sleeve 5 .
第１図は本実施例装置のプロセスカートリッジを有する
画像形成装置の断面図であり、使用前すなわち未開封状
態を表わすものである。FIG. 1 is a sectional view of an image forming apparatus having a process cartridge of this embodiment, and shows the image forming apparatus before use, that is, in an unopened state.
本実施例のプロセスカートリッジは、感光ドラムｌ、現
像装置２、クリーニング装置３、帯電装置４か一体的に
ユニットとして構成されている。The process cartridge of this embodiment includes a photosensitive drum 1, a developing device 2, a cleaning device 3, and a charging device 4, which are integrally constructed as a unit.
現像装置２は、乾式二成分磁気ブラシ現像方法を用いる
形式のものであり、使用前状態での現像剤は、鉄粉ある
いはフェライト等の磁性粒子からなるキャリアとトナー
の混合体であるスタート剤７は現像剤容器１２内に、そ
して補給用トナー８はその背後にあるトナー貯蔵容器１
３内に現像剤シール９を介して隔離して収容されている
。また、現像容器１２内に既に投入されているスタート
剤７は、現像スリーブ５内のマグネット６により現像容
器１２内に保持拘束されている。The developing device 2 is of a type that uses a dry two-component magnetic brush developing method, and the developer before use is a starter agent 7 which is a mixture of toner and a carrier made of magnetic particles such as iron powder or ferrite. is in the developer container 12, and the replenishment toner 8 is in the toner storage container 1 behind it.
3 and is housed in a separated state via a developer seal 9. Further, the starting agent 7 already placed in the developer container 12 is held and restrained in the developer container 12 by the magnet 6 in the developer sleeve 5 .
このとき、スタート剤７は現像容器１２の内部において
のみ上記現像スリーブ５上にて保持されており、現像装
置２の外側の領域、すなわち現像スリーブ５の回転方向
からみて規制部材１４より下流側では現像領域を含む下
部の飛散防止シール１１までの領域には、全くスタート
剤７が塗布されていない。本実施例では、規制部材１４
と現像スリーブ５との間の間隙にシート状の間隙調整部
材１０が挿入されており、該間隙調整部材ｌＯはその一
端か上記間隙を介して現像容器１２内部に取付けられ他
端はさらに上記間隙及び現像領域を経てプロセスカート
リッジの外部へ引き出されている。上記間隙調整部材Ｉ
Ｏの現像容器１２内部にある一端は、現像容器１２内に
剥離可能に接着されており、プロセスカートリッジの設
置時に設置者かプロセスカートリッジの外部に出ている
他端を引くことにより簡単に抜出できるようになってい
る。At this time, the starting agent 7 is held on the developing sleeve 5 only inside the developing container 12, and in the area outside the developing device 2, that is, on the downstream side of the regulating member 14 when viewed from the rotating direction of the developing sleeve 5. The starting agent 7 is not applied at all in the area up to the lower scattering prevention seal 11 including the developing area. In this embodiment, the regulating member 14
A sheet-shaped gap adjusting member 10 is inserted into the gap between the developing sleeve 5 and the developing sleeve 5, and the gap adjusting member 10 is attached at one end to the inside of the developer container 12 through the gap, and the other end is attached to the inside of the developer container 12 through the gap. and is drawn out of the process cartridge through the development area. The above gap adjustment member I
One end located inside the developer container 12 of O is removably glued inside the developer container 12, and can be easily pulled out by the installer when installing the process cartridge by pulling the other end protruding from the outside of the process cartridge. It is now possible to do so.
上記間隙調整部材１０は、その機能より現像剤塗布領域
全面に設置されることが好ましい。It is preferable that the gap adjustment member 10 is installed over the entire surface of the developer application area due to its function.
Ｅ記間隙調整部材１０が設けられて間隙が実質的に減少
しているために、プロセスカートリッジは使用前の取扱
時での振動や衝撃等を受けてもスタート現像剤７はこの
間隙を経て現像領域すなわち感光ドラムｌと現像スリー
ブ５の近接部分に洩出すことは極めて希になり現像剤に
よる感光体ｌの損傷を防止できる。さらに万一現像剤の
洩出が生じた場合においても、間隙調整部材１０か感光
体ｌの保護をするのでより一層安全である。間隙調整部
材１０の材質は特に限定されないが。Since the gap is substantially reduced by providing the gap adjustment member 10 described in E, even if the process cartridge is subjected to vibrations or shocks during handling before use, the start developer 7 can pass through this gap for development. It is extremely rare for the developer to leak into the area near the photosensitive drum 1 and the developing sleeve 5, thereby preventing damage to the photosensitive member 1 due to the developer. Furthermore, even if the developer leaks out, the gap adjustment member 10 or the photoreceptor 1 is protected, making it even safer. The material of the gap adjustment member 10 is not particularly limited.
ＰＥＴシート、ナイロンシート、ＰＥシート等が用いら
れ、その厚みは間隙の５０％〜９０％であることか好ま
しい。A PET sheet, a nylon sheet, a PE sheet, etc. are used, and the thickness thereof is preferably 50% to 90% of the gap.
現像容器での下部からの洩出は現像スリーブ５に先端な
当接させた下部飛散防止シールにより阻止される。Leakage from the lower part of the developing container is prevented by a lower shatterproof seal which is brought into contact with the developing sleeve 5 at its tip.
次に、本実施例のプロセスカートリッジの設置手順につ
いて述べる。予め、スタート剤７は現像容器１２内に投
入されており、マグネット６の磁力による拘束力そして
狭い間隙並びに下部飛散シール１１によって現像容器１
２内に閉じ込められたままである。スタート剤７は、所
定の現像動作中のトナーコンテンツよりもやや低めのト
ナーコンテンツにして、透磁率を増し、現像スリーブ５
内のマグネット６に強く拘束されるようにしておけば使
用前の取扱時の振動や衝撃を受けてもスタート剤７の片
寄りは殆ど発生しないので、プロセスカートリッジ設置
時において間隙調整部材ｌＯと現像剤シール９をほぼ同
時期に開封しても所定の性飽が得られ良好な現像性並び
に感光体損傷による、いわゆる白ポチ、黒ポチの発生や
現像バイアスのリーク等のない良質の画像を得ることが
できる。Next, the process cartridge installation procedure of this embodiment will be described. The starting agent 7 is placed in the developer container 12 in advance, and the developer container 1 is held by the binding force due to the magnetic force of the magnet 6, the narrow gap, and the lower scattering seal 11.
It remains trapped within 2. The starting agent 7 has a toner content slightly lower than the toner content during a predetermined developing operation to increase magnetic permeability, and the developing sleeve 5
If the starting agent 7 is strongly restrained by the magnet 6 inside, the starting agent 7 will hardly shift even if subjected to vibration or impact during handling before use. Even if the agent seal 9 is opened at approximately the same time, a predetermined saturation can be obtained, and a high-quality image can be obtained with good developability and without occurrence of so-called white spots or black spots or leakage of developing bias due to damage to the photoreceptor. be able to.
このように設置時においてスタート剤７の投入、均一化
に伴なう画出し確認等の複雑な操作手順が一切省かれる
ので誰にでも容易にプロセスカートリッジを設置するこ
とが可能になり設置ミスによるトナー飛散、カブリ等の
問題が解消されるものである。In this way, at the time of installation, complicated operating procedures such as adding the starting agent 7 and checking the image appearance due to uniformity are completely omitted, making it possible for anyone to easily install the process cartridge, thereby reducing the possibility of installation mistakes. This eliminates problems such as toner scattering and fogging caused by toner.
上記第一実施例に°おいては間隙調整部材１０の一端を
現像容器１２内部に剥離可能に接着し、他端をプロセス
カートリッジ外部に引き出していたかそれに限られるこ
とはない。使用前の取扱時で規制部材と現像スリーブと
の間に間隙調整部材ＩＯが設置されていればそれで十分
である。In the first embodiment described above, one end of the gap adjusting member 10 was releasably adhered to the inside of the developer container 12, and the other end was drawn out to the outside of the process cartridge, but the present invention is not limited to this. It is sufficient if the gap adjusting member IO is installed between the regulating member and the developing sleeve during handling before use.
例えば第２図〜第３図はそのような未発明の可使性を示
した第二実施例である。第２図〜第３図において、７１
は間隙調整部材ＩＯの現像容器１２外側での一端部を支
持する支持部材である。間隙調整部材ｌＯの一端は支持
部材７１に固定され使用前の取扱時には第７図に図示さ
れているように折り返し気味に設定されスリーブ５周面
に沿って、規制部材１４と現像スリーブ５の間を経て現
像容器１２内へ導かれている。For example, FIGS. 2 and 3 are a second embodiment showing such uninvented usability. In Figures 2 and 3, 71
is a support member that supports one end of the gap adjustment member IO on the outside of the developer container 12. One end of the gap adjustment member 1O is fixed to the support member 71, and when handled before use, it is set slightly folded back as shown in FIG. It is guided into the developing container 12 through the.
この間隙調整部材ＩＯにより上記取扱時に振動や衝撃を
受けても現像剤が洩出することなく感光体ｌの損傷が防
止される。This gap adjustment member IO prevents the developer from leaking and prevents damage to the photoreceptor 1 even if subjected to vibration or impact during handling.
本実施例のプロセスカートリッジでは設こ手順が前実施
例のものとは若干異なる。間隙調整部材１０は画像形成
動作に伴なう最初の現像スリーブ５の回動により現像容
器１２内に入れられていた間隙調整部材１０の他端部が
引き出されて外部に出てくる。そして第３図に示される
ように間隙調整部材ＩＯの自由端はドラム方向に向かい
現像スリーブ５と接触するようになる。このように自動
的に間隙調整部材１０が引き出されるので設置者が間隙
調整部材を外す手間が省けてさらに設置手順が簡便にな
り好都合である。The installation procedure for the process cartridge of this embodiment is slightly different from that of the previous embodiment. The other end of the gap adjusting member 10, which had been placed in the developer container 12, is pulled out by the first rotation of the developing sleeve 5 accompanying the image forming operation and comes out. As shown in FIG. 3, the free end of the gap adjusting member IO faces toward the drum and comes into contact with the developing sleeve 5. Since the gap adjusting member 10 is automatically pulled out in this way, the installer does not have to remove the gap adjusting member, and the installation procedure is further simplified, which is convenient.
なお第３図のように間隙調整部材ＩＯが軽く現像スリー
ブ５と接触しかつ覆う構成となることで現像スリーブ５
上部からの現像剤の飛散をも防止できて好都合である。As shown in FIG. 3, the gap adjustment member IO is configured to lightly contact and cover the developing sleeve 5, so that the developing sleeve 5
This is advantageous because it also prevents the developer from scattering from above.
既述した二つの実施例では、使用前の取扱時に規制部材
と現像スリーブとの間隙を狭く設定しておく方法として
、上記間隙にシート状物を挟んで実質的に上記間隙を一
時的に縮めていたか、直接に規制部材または現像スリー
ブ５を移動させて上記間隙を変更しても良いのは勿論で
ある。In the two embodiments described above, as a method of narrowing the gap between the regulating member and the developing sleeve during handling before use, a sheet-like material is inserted into the gap to substantially shorten the gap temporarily. Of course, the above-mentioned gap may be changed by directly moving the regulating member or the developing sleeve 5.
第４図、第５図に示される第三実施例は、使用前後にお
いて規制部材１４の位置を変えて上記間隙調整を行いス
タート剤７を封じ込めるものである。第４図は使用（設
２２）前の現像装置を表わす図であり、９１は規制部材
１４を上方へ引っばるバネ材、９２は規制部材１４を現
像スリーブ５表面に押しつけておくためのスペーサ、９
３は規制部材１４を支持する支持部材である。規制部材
１４は公知の手段により支持部材９３に矢印ａ方向に移
動可能に案内されており、バネ材９１によって常に上方
へ引かれ支持部材９３の規制部材設定面まで上昇せんと
しているがスペーサ９２より阻止されて現像スリーブ５
に当接又は近接した位置にある。このような状態で使用
前に取扱われるので前述の二つの実施例と同じく感光体
ｌに損傷を与えることがない。設は時に上記スペーサを
手動もしくは自動ではずすことによって、規制部材１４
の位置が所定の間隙となるようにバネ材９１によって引
き上げられ、画像形成作動中もバネ材９１の力と現像剤
７の押し上げる力によって所定の位置に保たれ続ける（
第５図参照）。In the third embodiment shown in FIGS. 4 and 5, the position of the regulating member 14 is changed before and after use to adjust the gap and seal the starter 7. FIG. 4 is a diagram showing the developing device before use (installation 22), in which 91 is a spring member that pulls the regulating member 14 upward, 92 is a spacer that presses the regulating member 14 against the surface of the developing sleeve 5, 9
3 is a support member that supports the regulation member 14. The regulating member 14 is movably guided by the supporting member 93 in the direction of the arrow a by a known means, and is constantly pulled upward by the spring member 91 to prevent it from rising to the regulating member setting surface of the supporting member 93. Blocked developing sleeve 5
in contact with or in close proximity to. Since it is handled in such a state before use, the photoreceptor 1 is not damaged as in the above two embodiments. When setting, the regulating member 14 is removed manually or automatically by removing the spacer.
It is pulled up by the spring member 91 so that the position thereof is a predetermined gap, and it continues to be maintained at the predetermined position by the force of the spring member 91 and the pushing force of the developer 7 even during the image forming operation (
(See Figure 5).
（発明の効果）
本発明は、以上のように規制部材と現像剤担持体との間
の間隙が比較的大きい二成分現像装置のプロセスカート
リッジにあって、間隙調整部材によって搬送時等の使用
前に上記間隙を狭くし使用時に所定間隙とすることとし
たので、搬送等の取扱時に振動・衝撃かあつても現像剤
が上記間隙から洩出することがなくなり、従来洩出に起
因した取扱上そしてａ部上の問題点を解消できるという
効果を得る。さらに、上記間隙調整部材な抜出可能なシ
ート状にして現像領域にまで及ぼすならば、仮りに洩出
が少量たりとあっても潜像担持体表面を傷つけることも
ない。(Effects of the Invention) As described above, the present invention provides a process cartridge for a two-component developing device in which the gap between the regulating member and the developer carrier is relatively large, and the gap adjusting member is used to prevent the process cartridge from being used during transportation etc. The above gap has been narrowed to a predetermined gap during use, so even if there is vibration or shock during handling such as transportation, the developer will not leak out from the gap, and handling problems caused by leakage in the past will be avoided. Then, the effect of solving the problem on part a is obtained. Furthermore, if the gap adjustment member is formed into a removable sheet and is applied to the developing area, even if a small amount leaks, it will not damage the surface of the latent image carrier.
図面はいづれも本発明の実施例を示し、第１図は第一実
施例装置を採用した画像形成装置の断面図、第２図及び
第３図は第二実施例装置の設置前後における状態での断
面図、第４図及び第５図は第三実施例装置の設置前後に
おける状態ての断面図である。
５−−−−−−−−・現像剤担持体
６・・・・・・・・・固定マグネット
９−−−−−・・・・シール部材
１０−・・・・・・・・間隙調整部材
１１・・・・・・・・・飛散防止シール１２・・・・・
・・・・現像剤容器
１３・・・・・・・・・トナー貯蔵容器１４−・・・・
・・・・規制部材
特許出願人 キャノン株式会社代 理 人
弁理士 藤 岡 徹第 ２ 図
第 ３ 図
第 ４ 図
第 ５ 図Each of the drawings shows an embodiment of the present invention, and FIG. 1 is a sectional view of an image forming apparatus employing the apparatus of the first embodiment, and FIGS. 2 and 3 show the state of the apparatus of the second embodiment before and after installation. FIGS. 4 and 5 are cross-sectional views of the apparatus of the third embodiment before and after installation. 5----------Developer carrier 6...Fixed magnet 9--Seal member 10--Gap adjustment Member 11...Scatter prevention seal 12...
...Developer container 13...Toner storage container 14-...
... Regulatory member patent applicant Canon Co., Ltd. Agent Patent attorney Toru Fujioka Figure 2 Figure 3 Figure 4 Figure 5
Claims (1)
れた潜像を顕像する二成分磁気ブラシを形成するための
現像装置を包含し、画像形成装置本体に対して着脱自在
なプロセスカートリッジにおいて、 プロセスカートリッジは、現像剤容器の背部にトナー貯
蔵容器を有し、上記現像剤容器内に配されて無端運動す
る現像剤担持体が現像剤容器の前部開口から一部突出し
、該現像剤担持体の内部には固定マグネットが配設され
、上記開口の現像剤担持体のを流側には該現像剤担持体
との間に所定間隙をもって配された現像剤塗布厚の規制
のための規制部材をそして下流側には飛散防止シールと
を有し、さらには現像剤容器とトナー貯蔵容器とは抜出
可能なシール部材が設けられると共に、上記規制部材と
現像剤担持体との間の間隙には間隙調整部材が設置され
ている、 ことを特徴とする画像形成装置のプロセスカートリッジ
。[Scope of Claims] The main body of the image forming apparatus includes at least a latent image carrier and a developing device for forming a two-component magnetic brush that develops a latent image formed on the surface of the latent image carrier. On the other hand, in a removable process cartridge, the process cartridge has a toner storage container at the back of the developer container, and a developer carrier disposed in the developer container and moving endlessly is inserted into the front opening of the developer container. A fixed magnet is disposed inside the developer carrier, and a fixed magnet is disposed inside the developer carrier, and a developer is disposed on the flow side of the developer carrier in the opening with a predetermined gap between the developer carrier and the developer carrier. A regulating member for regulating the coating thickness of the toner is provided, and a scattering prevention seal is provided on the downstream side.Furthermore, the developer container and the toner storage container are provided with a removable sealing member, and the regulating member and the above-mentioned regulating member are provided. A process cartridge for an image forming apparatus, characterized in that a gap adjustment member is installed in a gap between the cartridge and the developer carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62249955A JPH0192760A (en) | 1987-10-05 | 1987-10-05 | Process cartridge for image forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62249955A JPH0192760A (en) | 1987-10-05 | 1987-10-05 | Process cartridge for image forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0192760A true JPH0192760A (en) | 1989-04-12 |
Family
ID=17200671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62249955A Pending JPH0192760A (en) | 1987-10-05 | 1987-10-05 | Process cartridge for image forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0192760A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04107258U (en) * | 1991-02-27 | 1992-09-16 | カシオ電子工業株式会社 | process unit |
| EP2428847A3 (en) * | 2010-09-10 | 2017-01-25 | Samsung Electronics Co., Ltd. | Developing cartridge and image forming apparatus employing the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55142369A (en) * | 1979-04-23 | 1980-11-06 | Canon Inc | Developing device |
| JPS62192769A (en) * | 1986-02-19 | 1987-08-24 | Fuji Xerox Co Ltd | Developing device |
-
1987
- 1987-10-05 JP JP62249955A patent/JPH0192760A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55142369A (en) * | 1979-04-23 | 1980-11-06 | Canon Inc | Developing device |
| JPS62192769A (en) * | 1986-02-19 | 1987-08-24 | Fuji Xerox Co Ltd | Developing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04107258U (en) * | 1991-02-27 | 1992-09-16 | カシオ電子工業株式会社 | process unit |
| EP2428847A3 (en) * | 2010-09-10 | 2017-01-25 | Samsung Electronics Co., Ltd. | Developing cartridge and image forming apparatus employing the same |
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