JPH0922189A - Developing device - Google Patents
Developing deviceInfo
- Publication number
- JPH0922189A JPH0922189A JP17208295A JP17208295A JPH0922189A JP H0922189 A JPH0922189 A JP H0922189A JP 17208295 A JP17208295 A JP 17208295A JP 17208295 A JP17208295 A JP 17208295A JP H0922189 A JPH0922189 A JP H0922189A
- Authority
- JP
- Japan
- Prior art keywords
- magnet roller
- developing
- rotation
- developing device
- sleeve
- 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.)
- Granted
Links
Landscapes
- Magnetic Brush Developing In Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は複写機、プリンタ等
の画像形成装置に用いられ、像担持体上の静電像を現像
する現像装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a developing device which is used in an image forming apparatus such as a copying machine or a printer and develops an electrostatic image on an image carrier.
【0002】[0002]
【従来の技術】従来、画像形成装置には、像担持体と帯
電器、現像装置、クリーニング装置等のプロセス手段の
任意のものを、支持体として機能する共通のハウジング
に一体的に組み込んでプロセスカートリッジを構成し、
このプロセスカートリッジを画像形成装置本体に着脱可
能として画像形成装置のメンテナンス性、サービス性を
高めているものがある。2. Description of the Related Art Conventionally, in an image forming apparatus, an image carrier and any of process means such as a charger, a developing device, and a cleaning device are integrally incorporated into a common housing functioning as a support to carry out a process. Make up the cartridge,
Some process cartridges are attachable to and detachable from the image forming apparatus main body to improve the maintainability and serviceability of the image forming apparatus.
【0003】前記プロセスカートリッジを例に現像につ
いて説明する。Development will be described by taking the process cartridge as an example.
【0004】像担持体である感光ドラムに形成された静
電潜像を現像剤(トナー)により顕像化するための現像
器が設けられている。そして現像器内には現像ローラが
設けられ、現像ローラの磁力の作用により、現像器内の
トナーが担持され、感光ドラムの方へ供給される。A developing device is provided to visualize the electrostatic latent image formed on the photosensitive drum, which is an image carrier, with a developer (toner). A developing roller is provided in the developing device, and the magnetic force of the developing roller causes the toner in the developing device to be carried and supplied to the photosensitive drum.
【0005】図6に本発明が見出される背景となる現像
ローラの拡大断面図を示す。FIG. 6 shows an enlarged sectional view of the developing roller which is the background of the present invention.
【0006】かかる現像ローラは、図6に示す如く、一
定方向に回転する円筒状の現像スリーブ1と該現像スリ
ーブ1内に配設されるマグネットローラ2とから構成さ
れている。又現像スリーブ1は、その両端部は、フラン
ジ部材4a、4bが圧入や接着により固定されており、
該フランジ部材4a、4bを軸受部材5a、5bを介し
て現像器本体3に枢支されている。又、現像ローラへの
バイアス給電は、フランジ部材4bに固定されたスリー
ブ電極6が、現像スリーブ1の内径に接するように固定
されており、ホルダー9bに固定された電極板7と接す
る。As shown in FIG. 6, the developing roller is composed of a cylindrical developing sleeve 1 which rotates in a fixed direction and a magnet roller 2 which is disposed in the developing sleeve 1. Further, the developing sleeve 1 has flange members 4a and 4b fixed to both ends thereof by press fitting or adhesion,
The flange members 4a and 4b are pivotally supported on the developing device main body 3 via bearing members 5a and 5b. Further, for bias power supply to the developing roller, the sleeve electrode 6 fixed to the flange member 4b is fixed so as to come into contact with the inner diameter of the developing sleeve 1, and comes into contact with the electrode plate 7 fixed to the holder 9b.
【0007】このプロセスカートリッジが画像形成装置
本体に装着されると、図6の如く電極板7と画像形成装
置本体側の接点11と接し、電気的導通が得られてい
る。When this process cartridge is attached to the main body of the image forming apparatus, the electrode plate 7 and the contact 11 on the main body of the image forming apparatus are in contact with each other as shown in FIG.
【0008】ところで現像スリーブ1内に配設されるマ
グネットローラ2は、マグネットローラ2の持つ円周上
の磁極を不図示感光ドラムに対し所定角度の位置に保持
されることで、所定量のトナーを感光ドラムに供給して
いる。その為、マグネットローラ2の端部の少なくとも
一方端2bは、所定の角度決めが可能な形状をしてい
る。図6においては一方端2aの断面形状は丸形状、他
方端2bの断面形状はD形状の凸としている。マグネッ
トローラ2の両端部2a、2bは、現像器本体3に固定
されるホルダー9a、9bにより支持され、マグネット
ローラ2の所定角度出しは、ホルダ9bに形成されたD
形穴とマグネットローラ2の一方端2bのD形凸形状部
が係合することで、所定角度位置が保持されることにな
る。組立時においては、ホルダー9bを現像器本体3に
ビス止め等で固定する際、ホルダー9bの位置決め穴9
dをあわせつつマグネットローラ2の端部2bのD形凸
形状部と係合するように組立られる。The magnet roller 2 disposed in the developing sleeve 1 holds a predetermined amount of toner by holding the magnetic poles on the circumference of the magnet roller 2 at a predetermined angle with respect to the photosensitive drum (not shown). Is being supplied to the photosensitive drum. Therefore, at least one end 2b of the end portion of the magnet roller 2 has a shape capable of determining a predetermined angle. In FIG. 6, the cross-sectional shape of one end 2a is round and the cross-sectional shape of the other end 2b is D-shaped convex. Both ends 2a, 2b of the magnet roller 2 are supported by holders 9a, 9b fixed to the developing device main body 3, and a predetermined angle of the magnet roller 2 is provided on the holder 9b.
By engaging the shaped hole and the D-shaped convex portion of the one end 2b of the magnet roller 2, the predetermined angular position is maintained. At the time of assembly, when fixing the holder 9b to the developing device main body 3 with screws or the like, the positioning hole 9 of the holder 9b
The magnet roller 2 is assembled so as to be engaged with the D-shaped convex portion of the end portion 2b while adjusting d.
【0009】[0009]
【発明が解決する課題】マグネットローラの持つ円周上
の磁極を感光ドラムに対し、所定の角度に配置する際、
マグネットローラはホルダーで位置決めされる前は、現
像スリーブ内で回転自在の状態にある。When the magnetic poles on the circumference of the magnet roller are arranged at a predetermined angle with respect to the photosensitive drum,
Before the magnet roller is positioned by the holder, it is rotatable in the developing sleeve.
【0010】このためホルダーを取り付ける際に、ホル
ダーを現像器本体との位置決め穴9dとこの9dとは離
れたマグネットローラの端面2bの両方に位置精度を出
さなくてはならず、ホルダーの組立を行うには非常に組
立性が悪い。For this reason, when the holder is attached, it is necessary to provide positional accuracy on both the positioning hole 9d for the developing device main body and the end surface 2b of the magnet roller which is separated from the positioning hole 9d. Very bad to assemble.
【0011】また、ホルダーは位置決め穴9dと、D形
凸形状部との嵌合穴との精度が高くないと組立を行うこ
とができず、ホルダーに求められる部品精度が高くな
る。Further, the holder cannot be assembled unless the positioning hole 9d and the fitting hole of the D-shaped convex portion are high in accuracy, and the accuracy of parts required for the holder is high.
【0012】[0012]
【課題を解決する手段】上記課題を解決する本発明は、
現像剤を担持して回転する現像剤担持体と、この現像剤
担持体内に設けられ端部に非円筒形の回転禁止部を有す
るマグネットロールと、現像剤担持体へ給電すると共に
回転禁止部に嵌合しマグネットロールの回転止めを行う
電極部材と、を有することを特徴とする現像装置、及
び、現像剤を担持して回転する現像剤担持体と、この現
像剤担持体内に設けられ端部に非円筒形の回転禁止部を
有するマグネットロールと、現像剤担持体を回転可能に
支持すると共に回転禁止部に嵌合しマグネットロールの
回転止めを行う滑り軸受と、を有することを特徴とする
現像装置である。According to the present invention for solving the above-mentioned problems,
A developer carrying body that carries and rotates a developer, a magnet roll provided in the developer carrying body and having a non-cylindrical rotation inhibiting portion at an end, a power supply to the developer carrying body, and a rotation inhibiting portion. A developing device, comprising: an electrode member that is fitted to prevent rotation of the magnet roll; a developer carrier that carries a developer and rotates; and an end portion provided in the developer carrier. A magnet roll having a non-cylindrical rotation inhibiting portion, and a slide bearing that rotatably supports the developer carrier and that fits in the rotation inhibiting portion to prevent rotation of the magnet roll. It is a developing device.
【0013】[0013]
【発明の実施の形態】図7は本発明を実施した現像装置
を有するプロセスカートリッジの断面図である。FIG. 7 is a sectional view of a process cartridge having a developing device embodying the present invention.
【0014】本実施形態のプロセスカートリッジは、カ
ートリッジ枠体内に、像担持体としての回転自在な感光
体20と、帯電器30と現像器40と、クリーナー50
との4種のプロセス手段を一体的に収容している。The process cartridge according to the present embodiment has a rotatable photosensitive member 20 as an image carrier, a charging device 30, a developing device 40, and a cleaner 50 in a cartridge frame.
And the four process means are integrally housed.
【0015】現像器40は、一成分磁性トナーTを収容
している。The developing device 40 contains a one-component magnetic toner T.
【0016】1はトナーTを担持して回転する現像剤担
持体である現像スリーブ、43は現像スリーブ1上のト
ナー層厚を規制する規制ブレード、44は掬いシート、
45は端部からのトナーの漏れを防止する端部シールで
ある。Reference numeral 1 designates a developing sleeve which is a developer carrying member which carries the toner T and rotates, 43 a regulating blade which regulates the toner layer thickness on the developing sleeve 1, 44 a scooping sheet,
Reference numeral 45 denotes an end seal that prevents toner from leaking from the end.
【0017】図1は本実施形態の現像スリーブ付近の拡
大断面図である。FIG. 1 is an enlarged sectional view around the developing sleeve of this embodiment.
【0018】図1においては一定方向に回転する円筒状
の現像スリーブで、該現像スリーブ1内にマグネットロ
ーラ2は配設されている。In FIG. 1, the developing roller is a cylindrical developing sleeve that rotates in a fixed direction, and the magnet roller 2 is disposed in the developing sleeve 1.
【0019】このマグネットローラ2は周方向に複数の
磁極を有し、磁極配置が所定の位置関係でセットされて
いる。The magnet roller 2 has a plurality of magnetic poles in the circumferential direction, and the magnetic pole arrangement is set in a predetermined positional relationship.
【0020】非磁性円筒体の現像スリーブ1の一方端に
はフランジ4bがスリーブ電極6を伴い圧入や接着によ
り固定されており、現像スリーブ1を回転可能に支持す
る滑り軸受部材5bを介して現像器本体3に枢支されて
いる。又現像スリーブの他方端はフランジ4aが圧入や
接着により固定されており、軸受部材5aを介して現像
本体3に枢支されている。又現像スリーブ1の両端に
は、感光ドラム(不図示)に当接し、感光ドラムと現像
スリーブ1との距離を一定に保つコロ8が挿入されてい
る。フランジ4aには歯車10が係合し、不図示感光ド
ラムに圧入又は接着等で固定された歯車より駆動を得
て、所定の回転数で一定方向に現像スリーブ1は回転す
る。フランジ部材4bに固定されたスリーブ電極6は、
現像スリーブ1に内接するように固定されており、軸受
部材5bに固定された電極板7と接している。この電極
板7は、画像形成装置本体に装着されると画像形成装置
本体内の接点11、及び、スリーブ電極と接し、現像ス
リーブと電気的導通が得られ、現像ローラへ現像バイア
ス電圧を給電することが可能となる。A flange 4b is fixed to one end of the developing sleeve 1 of a non-magnetic cylindrical body together with a sleeve electrode 6 by press fitting or adhesion, and development is performed via a slide bearing member 5b that rotatably supports the developing sleeve 1. It is pivotally supported by the container body 3. A flange 4a is fixed to the other end of the developing sleeve by press fitting or bonding, and is pivotally supported on the developing main body 3 via a bearing member 5a. Rollers 8 that contact a photosensitive drum (not shown) and keep the distance between the photosensitive drum and the developing sleeve 1 constant are inserted at both ends of the developing sleeve 1. A gear 10 is engaged with the flange 4a, and the developing sleeve 1 is rotated in a fixed direction at a predetermined rotation speed by being driven by a gear fixed to a photosensitive drum (not shown) by press fitting or adhesion. The sleeve electrode 6 fixed to the flange member 4b is
It is fixed so as to be inscribed in the developing sleeve 1, and is in contact with the electrode plate 7 fixed to the bearing member 5b. When this electrode plate 7 is attached to the image forming apparatus main body, it contacts the contact 11 inside the image forming apparatus main body and the sleeve electrode, and is electrically connected to the developing sleeve, and supplies a developing bias voltage to the developing roller. It becomes possible.
【0021】ここでの現像スーブ1内に配設されたマグ
ネットローラ2は、マグネットローラ2が持つ円周上の
磁極を不図示感光ドラムに対し、所定の角度位置を保持
されなければならないが、本実施例においてはマグネッ
トローラ2の一方端形状2bは非円筒形の断面がD形状
の凸の回転禁止部としている。マグネットローラ2を所
定角度位置に保持する為、マグネットローラ端部2bの
回転禁止部と嵌合する回転止め形状を軸受部材5bに持
たせ、D形穴形状とする(5c)。The magnet roller 2 arranged in the developing souve 1 here is required to hold the magnetic poles on the circumference of the magnet roller 2 with respect to the photosensitive drum (not shown) at a predetermined angular position. In the present embodiment, the one end shape 2b of the magnet roller 2 is a non-cylindrical section having a D-shaped convex rotation prohibition section. In order to hold the magnet roller 2 at a predetermined angle position, the bearing member 5b is provided with a rotation stopping shape that fits with the rotation prohibiting portion of the magnet roller end portion 2b to form a D-shaped hole shape (5c).
【0022】この構成とする事で、図2に示す如く、現
像スリーブユニットの状態で、マグネットローラ2の磁
極を所定角度位置に合わせることが可能な状態となる。
この状態で現像器本体の2ヶ所の3aに軸受部材5bの
5d部を係合するだけで、マグネットローラ2を不図示
感光ドラムに対し所定の角度位置が容易に保たれること
になる。次にホルダー9a、9bをマグネットローラ2
の位置決め作業を要することなく、ビス等にて現像器本
体3に枢支すれば、現像器本体3が完成されることにな
り、大きな作業の効率化がはかられる。With this structure, as shown in FIG. 2, the magnetic pole of the magnet roller 2 can be aligned with a predetermined angular position in the state of the developing sleeve unit.
In this state, the magnet roller 2 can be easily maintained at a predetermined angular position with respect to the photosensitive drum (not shown) simply by engaging the two 3a of the developing device main body with the 5d portion of the bearing member 5b. Next, attach the holders 9a and 9b to the magnet roller 2
By pivotally supporting the developing device main body 3 with a screw or the like without requiring the positioning work, the developing device main body 3 will be completed, and a large work efficiency can be achieved.
【0023】この際、滑り軸受5bは、現像スリーブ端
部のフランジ4を回転可能に支持するものであるため、
その中心にD形穴を設ければ良く、部品精度が高くなっ
てしまうことはない。At this time, since the slide bearing 5b rotatably supports the flange 4 at the end portion of the developing sleeve,
It suffices if a D-shaped hole is provided at the center of the hole, and the precision of the parts does not increase.
【0024】(第2の実施の形態)図3に本発明を実施
した別の現像装置の部分拡大図を示す。(Second Embodiment) FIG. 3 shows a partially enlarged view of another developing device embodying the present invention.
【0025】本例ではマグネットローラの回転止めを現
像スリーブに給電するための電極板で行っている。In this example, the rotation of the magnet roller is stopped by the electrode plate for supplying power to the developing sleeve.
【0026】即ち、図3に示すように、マグネットロー
ラ2を所定角度位置に保持する為、マグネットローラ端
部の回転禁止部2bと嵌合するD形状の穴(図3
(b))を電極板7に設けている。That is, as shown in FIG. 3, in order to hold the magnet roller 2 at a predetermined angle position, a D-shaped hole (FIG.
(B)) is provided on the electrode plate 7.
【0027】この例もスリーブユニットとして構成した
際にマグネットローラの角度は既に決められ、このスリ
ーブユニットを現像器に単に組付ければ良いため前述の
例と同様に組立作業の効率化が達成できる。In this example as well, when the sleeve unit is constructed, the angle of the magnet roller is already determined, and since it is sufficient to assemble this sleeve unit to the developing device, the efficiency of the assembling work can be achieved as in the above example.
【0028】又、電極板は給電のための十分な接触が得
られれば良く、高い位置精度を必要としないため、この
電極板に回転止め機能を加えても部品点数は高まらな
い。Further, since it is sufficient for the electrode plate to obtain sufficient contact for power supply and high positional accuracy is not required, the number of parts does not increase even if a rotation stopping function is added to this electrode plate.
【0029】更に、この電極板は軸受部材5bに固定さ
れているため、回転止めのD字穴の位置も軸受部材の中
心と一致させれば良く簡単に得られる。Further, since this electrode plate is fixed to the bearing member 5b, the position of the D-shaped hole for the rotation stopper can be easily obtained by aligning it with the center of the bearing member.
【0030】(第3の実施の形態)図4に示すように、
マグネットローラ2を所定角度位置に保持する為、マグ
ネットローラ端部2bと係合する形状を軸受部材5bに
持たせ、尚かつ軸受部材5bを導電性として軸受部材を
介して現像スリーブに現像バイアスを給電している。(Third Embodiment) As shown in FIG.
In order to hold the magnet roller 2 at a predetermined angle position, the bearing member 5b has a shape that engages with the magnet roller end 2b, and the bearing member 5b is made conductive so that a developing bias is applied to the developing sleeve via the bearing member. Power is being supplied.
【0031】この例では、電極板7を不要とすることが
できる為、部品点数の削減、構成の簡略化が可能とな
る。In this example, since the electrode plate 7 can be omitted, the number of parts can be reduced and the structure can be simplified.
【0032】(第4の実施の形態)図5に示すようにマ
グネットローラを所定角度位置に保持する為、マグネッ
トローラ端部2bと係合する形状を軸受部材5bに持た
せる。更に、軸受部材5bとフランジ部材4bは導電性
とし、軸受部材及びフランジ部材を介して現像スリーブ
に現像バイアスを給電している。(Fourth Embodiment) As shown in FIG. 5, in order to hold the magnet roller at a predetermined angle position, the bearing member 5b has a shape that engages with the magnet roller end 2b. Further, the bearing member 5b and the flange member 4b are electrically conductive, and the developing bias is supplied to the developing sleeve through the bearing member and the flange member.
【0033】本例では、スリーブ電極6、電極板7を使
用しない為、部品点数の削減、構成の簡略化が可能とな
る。In this example, since the sleeve electrode 6 and the electrode plate 7 are not used, the number of parts can be reduced and the structure can be simplified.
【0034】[0034]
【発明の効果】以上説明したように本発明によれば、組
立作業効率を向上させることができる。As described above, according to the present invention, the assembling work efficiency can be improved.
【図1】本発明を実施した現像装置の部分拡大断面図。FIG. 1 is a partially enlarged sectional view of a developing device embodying the present invention.
【図2】現像スリーブユニットの断面図。FIG. 2 is a sectional view of a developing sleeve unit.
【図3】本発明の第2の実施の形態の現像装置の部分拡
大断面図。FIG. 3 is a partially enlarged cross-sectional view of a developing device according to a second embodiment of the present invention.
【図4】本発明の第3の実施の形態の現像装置の部分拡
大断面図。FIG. 4 is a partially enlarged cross-sectional view of a developing device according to a third embodiment of the invention.
【図5】本発明の第4の実施の形態の現像装置の部分拡
大断面図。FIG. 5 is a partially enlarged cross-sectional view of a developing device according to a fourth embodiment of the present invention.
【図6】本発明の背景となる現像装置の部分拡大断面
図。FIG. 6 is a partially enlarged cross-sectional view of a developing device that is the background of the present invention.
【図7】本発明を実施したプロセスカートリッジの断面
図。FIG. 7 is a sectional view of a process cartridge embodying the present invention.
1 現像スリーブ 2 マグネットローラ 3 現像器本体 4 フランジ 5 軸受部材 6 スリーブ電極 7 電極板 8 コロ 9 ホルダー 10 歯車 11 画像形成装置本体のバイアス接点 1 developing sleeve 2 magnet roller 3 developing device main body 4 flange 5 bearing member 6 sleeve electrode 7 electrode plate 8 roller 9 holder 10 gear 11 bias contact of image forming apparatus main body
───────────────────────────────────────────────────── フロントページの続き (72)発明者 斎藤 勇 埼玉県新座市栄3−7−22 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Isamu Saito 3-7-22 Sakae, Niiza City, Saitama Prefecture
Claims (4)
と、この現像剤担持体内に設けられ端部に非円筒形の回
転禁止部を有するマグネットロールと、現像剤担持体へ
給電すると共に回転禁止部に嵌合しマグネットロールの
回転止めを行う電極部材と、を有することを特徴とする
現像装置。1. A developer carrying member carrying and rotating a developer, a magnet roll provided in the developer carrying member and having a non-cylindrical rotation inhibiting portion at an end thereof, and supplying power to the developer carrying member. A developing device further comprising: an electrode member that fits in the rotation prohibiting portion and stops rotation of the magnet roll.
を有し、上記電極部材は軸受に固定されていることを特
徴とする請求項1の現像装置。2. The developing device according to claim 1, further comprising a bearing that rotatably supports the developer carrier, and the electrode member is fixed to the bearing.
能に支持する導電性の滑り軸受であることを特徴とする
請求項1の現像装置。3. The developing device according to claim 1, wherein the electrode member is a conductive slide bearing that rotatably supports the developer carrier.
と、この現像剤担持体内に設けられ端部に非円筒形の回
転禁止部を有するマグネットロールと、現像剤担持体を
回転可能に支持すると共に回転禁止部に嵌合しマグネッ
トロールの回転止めを行う滑り軸受と、を有することを
特徴とする現像装置。4. A developer carrying member which carries a developer and rotates, a magnet roll which is provided in the developer carrying member and has a non-cylindrical rotation inhibiting portion at an end thereof, and the developer carrying member is rotatable. And a slide bearing which is fitted to the rotation prohibiting portion and stops the rotation of the magnet roll.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17208295A JP3210210B2 (en) | 1995-07-07 | 1995-07-07 | Developing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17208295A JP3210210B2 (en) | 1995-07-07 | 1995-07-07 | Developing device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0922189A true JPH0922189A (en) | 1997-01-21 |
JP3210210B2 JP3210210B2 (en) | 2001-09-17 |
Family
ID=15935209
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17208295A Expired - Fee Related JP3210210B2 (en) | 1995-07-07 | 1995-07-07 | Developing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3210210B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6173145B1 (en) * | 1998-10-26 | 2001-01-09 | Canon Kabushiki Kaisha | Developing apparatus with drive mechanism for developer bearing body |
JP2007316456A (en) * | 2006-05-29 | 2007-12-06 | Kyocera Mita Corp | Developing device |
-
1995
- 1995-07-07 JP JP17208295A patent/JP3210210B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6173145B1 (en) * | 1998-10-26 | 2001-01-09 | Canon Kabushiki Kaisha | Developing apparatus with drive mechanism for developer bearing body |
JP2007316456A (en) * | 2006-05-29 | 2007-12-06 | Kyocera Mita Corp | Developing device |
Also Published As
Publication number | Publication date |
---|---|
JP3210210B2 (en) | 2001-09-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0549400B1 (en) | Developing apparatus and process cartridge having same | |
JP3548564B2 (en) | Developing roller assembly method | |
JPH0414348B2 (en) | ||
US5682587A (en) | Developing apparatus using hollow magnet roller | |
JP2921913B2 (en) | Method of adjusting doctor gap of developing device in electrophotography and its adjusting structure | |
JP3382447B2 (en) | Process cartridge and method of manufacturing the same | |
JP2007163766A (en) | Developing apparatus and image forming apparatus equipped with the same | |
JPH0922189A (en) | Developing device | |
JPH05289588A (en) | Image forming device | |
JP2002072680A (en) | Image forming system | |
JPH07325530A (en) | Photoreceptor supporting device and image forming device using the same | |
JPH11109748A (en) | Developing device | |
JP3429163B2 (en) | Developing device for electrophotographic equipment | |
JPH05257378A (en) | Developing device and process cartridge loading it | |
JP3219656B2 (en) | Developing device | |
JPH08114980A (en) | Developing device | |
JPH0720686Y2 (en) | Development device | |
JPH08681Y2 (en) | Developing device for electrophotographic device | |
JPH0954492A (en) | Developing device | |
JP3150215B2 (en) | Developing device and process cartridge using the same | |
JPH06289719A (en) | Developing device | |
JP2004109189A (en) | Process cartridge, development device, and development bias voltage contact arrangement | |
JPH06242669A (en) | Developing device | |
JPH08240992A (en) | Developing device | |
JP2004037913A (en) | Developing device, developing cartridge, process cartridge and image forming apparatus |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20010626 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080713 Year of fee payment: 7 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080713 Year of fee payment: 7 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090713 Year of fee payment: 8 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090713 Year of fee payment: 8 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100713 Year of fee payment: 9 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100713 Year of fee payment: 9 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110713 Year of fee payment: 10 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120713 Year of fee payment: 11 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120713 Year of fee payment: 11 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130713 Year of fee payment: 12 |
|
LAPS | Cancellation because of no payment of annual fees |