JP3192575B2 - Charging device - Google Patents
Charging deviceInfo
- Publication number
- JP3192575B2 JP3192575B2 JP17095995A JP17095995A JP3192575B2 JP 3192575 B2 JP3192575 B2 JP 3192575B2 JP 17095995 A JP17095995 A JP 17095995A JP 17095995 A JP17095995 A JP 17095995A JP 3192575 B2 JP3192575 B2 JP 3192575B2
- Authority
- JP
- Japan
- Prior art keywords
- charging
- contact
- charging device
- charging roller
- sheet metal
- 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.)
- Expired - Fee Related
Links
Landscapes
- Electrophotography Configuration And Component (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は感光体や誘電体のよ
うな被帯電体を帯電する帯電装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a charging device for charging an object to be charged such as a photoreceptor or a dielectric.
【０００２】[0002]
【背景技術】従来より、例えば電子写真複写機やプリン
ター等の画像形成装置において、感光体等の被帯電体の
表面を帯電するための手段として、帯電ローラ等を用い
た接触帯電方式が用いられている。2. Description of the Related Art Conventionally, in an image forming apparatus such as an electrophotographic copying machine or a printer, a contact charging system using a charging roller or the like has been used as a means for charging the surface of a member to be charged such as a photosensitive member. ing.
【０００３】接触帯電方式を用いた帯電装置は、それま
でのコロナ放電器を用いた帯電装置に比べて低消費電
力、オゾンレス等の利点を有する。A charging device using a contact charging method has advantages such as low power consumption and ozone-less as compared with a charging device using a corona discharger.
【０００４】図２に従来の帯電装置の給電部の概略図を
示す。帯電ローラ２の回転軸としての芯金１１は電源７
と接続された電極３５によってその端部から電圧が印加
される。帯電部材としての帯電ローラ２は、その回転軸
としての芯金１１の両端部がそれぞれ不図示の軸受けに
軸受けされ、さらにその両軸受けがそれぞれ不図示のバ
ネによって押圧され、感光ドラムとの間に接触部（ニッ
プ部）を形成している。電源７より板状の電極３５を介
して、芯金１１にバイアス電圧を印加することにより感
光ドラム表面の帯電が行われる。FIG. 2 is a schematic view of a power supply section of a conventional charging device. A core metal 11 as a rotating shaft of the charging roller 2 is connected to a power source 7.
A voltage is applied from the end of the electrode 35 connected to the electrode 35. The charging roller 2 serving as a charging member has both ends of a core metal 11 serving as a rotation shaft thereof respectively supported by bearings (not shown), and both bearings are pressed by springs (not shown), respectively, and are located between the photosensitive drum and the photosensitive drum. A contact portion (nip portion) is formed. The surface of the photosensitive drum is charged by applying a bias voltage to the metal core 11 from the power source 7 via the plate-like electrode 35.
【０００５】[0005]
【発明が解決しようとする課題】この種の給電機構を採
用した帯電装置は、給電部において、帯電ローラを保持
する力が比較的弱く、帯電装置を輸送する際等に、振動
や傾き等により帯電ローラの長手方向の移動が起きやす
い。A charging device employing this type of power supply mechanism has a relatively weak force for holding a charging roller in a power supply portion, and is liable to be vibrated or tilted when transporting the charging device. The charging roller is likely to move in the longitudinal direction.
【０００６】図３の様に、帯電ローラ２の長手方向の移
動が生じた場合、帯電ローラ２の押圧によって、電源７
に接続された板状の給電用電極３５が力を受け、ある一
定以上の力がかかると、電極３５は帯電ローラ２の芯金
１１から離れる方向へ永久変形してしまう可能性があ
る。As shown in FIG. 3, when the charging roller 2 moves in the longitudinal direction, the power source 7 is pressed by pressing the charging roller 2.
When the plate-shaped power supply electrode 35 connected to the charging roller 35 receives a force and a certain force or more is applied, the electrode 35 may be permanently deformed in a direction away from the metal core 11 of the charging roller 2.
【０００７】電極３５に変形を生じた帯電装置では、帯
電ローラ２への給電能力が、正常な場合に比べて著しく
劣る。[0007] In the charging device in which the electrode 35 is deformed, the power supply capability to the charging roller 2 is significantly inferior to that in a normal case.
【０００８】電極３５が変形してしまうと、図３に示す
ように、電極３５が帯電ローラ２の動きに追随できない
ため、電極３５と帯電ローラの芯金１１が離れてしま
い、帯電ローラ２に給電できなくなってしまう場合があ
る。When the electrode 35 is deformed, the electrode 35 cannot follow the movement of the charging roller 2 as shown in FIG. Power may not be supplied.
【０００９】この様に、電極３５から帯電ローラ２に電
力を給電できない状態が生じると、感光ドラム上に十分
な電位が乗らないため、その部分が画像上欠陥となって
現れてしまった。As described above, when a state where power cannot be supplied from the electrode 35 to the charging roller 2 occurs, a sufficient potential is not applied on the photosensitive drum, and that portion appears as a defect on an image.
【００１０】[0010]
【課題を解決するための手段】本発明は、被帯電体を帯
電する回転軸を備える回転可能な帯電部材と、電圧を前
記回転軸に印加するために前記回転軸と接触する電極部
材と、を有する帯電装置において、前記電極部材は、前
記回転軸の端面に接触する導電性樹脂と、前記導電性樹
脂の前記回転軸の端面と接する面と反対側の面に接する
板金と、を備え、前記導電性樹脂は、前記回転軸と接す
る面と反対側の面に、前記板金が前記帯電部材がある側
と逆側に所定範囲以上移動するのを規制するために、画
像形成装置本体の壁又は画像形成装置本体に着脱可能な
プロセスカートリッジの壁に当接可能な突起部を備える
ことを特徴とする。According to the present invention, there is provided a rotatable charging member having a rotating shaft for charging an object to be charged, an electrode member in contact with the rotating shaft for applying a voltage to the rotating shaft, Wherein the electrode member includes a conductive resin that is in contact with an end face of the rotating shaft, and a sheet metal that is in contact with a surface of the conductive resin opposite to a surface that is in contact with the end face of the rotating shaft, The conductive resin is provided on a surface of the image forming apparatus main body on a surface opposite to a surface in contact with the rotation axis to restrict the sheet metal from moving a predetermined range or more to a side opposite to a side where the charging member is located. Alternatively, the image forming apparatus further includes a projection that can be brought into contact with a wall of the process cartridge that is detachable from the image forming apparatus main body.
【００１１】[0011]
（第１の実施態様）図７，図９は、帯電部材としての帯
電ローラによる接触帯電方式を用いた帯電装置を有する
画像形成装置を側面より見た断面図である。図８は、同
様の帯電装置を正面より見た図である。(First Embodiment) FIGS. 7 and 9 are cross-sectional views of an image forming apparatus having a charging device using a contact charging system with a charging roller as a charging member as viewed from the side. FIG. 8 is a front view of the same charging device.
【００１２】被帯電体としての感光ドラム１は、矢印方
向に回転し、帯電部材としての帯電ローラ２は、その回
転軸である芯金１１の両端部がそれぞれ軸受け２１に軸
受けされ、さらにその両軸受けがそれぞれバネ２２によ
って押圧され、感光ドラムとの間に接触部（ニップ部）
を形成している。プリントスタート信号により電源７よ
り電極部材を介して帯電ローラの芯金１１にバイアス電
圧を印加することにより感光ドラム表面の帯電が一様均
一に行われ、その帯電面に対してレーザスキャナユニッ
ト８からは、画像情報に対応する画像信号に応じて変調
されたレーザ光の露光により静電潜像が形成される。感
光ドラム上の静電潜像は現像装置３によりトナー像とし
て顕像化され、そのトナー像が転写手段としての転写ロ
ーラ４により紙等のシート材６に対して像として転写さ
れる。画像転写を受けたシート材は定着器９の定着ロー
ラ１２と加圧ローラ１３とのニップを通過することによ
り加熱されてトナー像が永久定着される。転写後に感光
ドラム上に残留するトナーはクリーニング装置５のブレ
ードによって清掃除去され、感光ドラムは繰り返して帯
電から始まる画像形成に供される。The photosensitive drum 1 as a member to be charged is rotated in the direction of an arrow, and a charging roller 2 as a charging member is supported by bearings 21 at both ends of a core metal 11 which is a rotating shaft thereof. Each bearing is pressed by a spring 22 and a contact portion (nip portion) between the bearing and the photosensitive drum.
Is formed. By applying a bias voltage to the metal core 11 of the charging roller from the power source 7 via the electrode member in accordance with the print start signal, the surface of the photosensitive drum is uniformly charged by the laser scanner unit 8 with respect to the charged surface. An electrostatic latent image is formed by exposing a laser beam modulated according to an image signal corresponding to image information. The electrostatic latent image on the photosensitive drum is visualized as a toner image by the developing device 3, and the toner image is transferred as an image to a sheet material 6 such as paper by a transfer roller 4 as a transfer unit. The sheet material to which the image has been transferred passes through the nip between the fixing roller 12 and the pressure roller 13 of the fixing device 9 and is heated to permanently fix the toner image. The toner remaining on the photosensitive drum after the transfer is cleaned and removed by the blade of the cleaning device 5, and the photosensitive drum is repeatedly subjected to image formation starting from charging.
【００１３】前記帯電ローラの芯金１１の両端部をそれ
ぞれ軸受け支持する軸受け２１はプラスチック等で形成
される。The bearings 21 for supporting both ends of the core 11 of the charging roller are made of plastic or the like.
【００１４】図１は、帯電ローラにバイアス電圧を印加
する第１の方法を示したものである。すなわち、電源７
のバイアス電圧が電極部材３０に印加され、その一部
は、帯電ローラの芯金１１の端面に接触しているので、
帯電ローラ２に対する給電が直接出来るようにしたもの
である。FIG. 1 shows a first method of applying a bias voltage to a charging roller. That is, the power supply 7
Is applied to the electrode member 30 and a part thereof is in contact with the end face of the core metal 11 of the charging roller.
The power supply to the charging roller 2 can be directly performed.
【００１５】電極部材３０は、導電性の給電板金３１
と、接点部材３２と、突起部３３と、を備える。The electrode member 30 is made of a conductive sheet metal 31.
, A contact member 32, and a projection 33.
【００１６】給電板金３１の基端部（根元部分）は、画
像形成装置本体等にネジ結合等により固定支持されてお
り、その長手端部には電気接点部材３２が加締め等によ
り固定されている。A base end portion (root portion) of the feeding sheet metal 31 is fixedly supported by a screw connection or the like to an image forming apparatus main body or the like, and an electrical contact member 32 is fixed to a longitudinal end portion thereof by caulking or the like. I have.
【００１７】電気接点部材３２は、帯電ローラ２の芯金
１１のスラスト方向（軸方向）の端面に対して、給電板
金３１の弾性によって一定の加圧力を持って接触させて
ある。The electric contact member 32 is brought into contact with the end face of the core metal 11 of the charging roller 2 in the thrust direction (axial direction) with a constant pressing force due to the elasticity of the power supply sheet metal 31.
【００１８】電気接点部材３２は、導電性の樹脂（例え
ばポリフェニレンサルファイド等）からなり、導電度を
向上するためにカーボン等の導電フィラー等を含有させ
ている。The electrical contact member 32 is made of a conductive resin (for example, polyphenylene sulfide), and contains a conductive filler such as carbon to improve conductivity.
【００１９】接点部材３２は、給電板金３１と同じ金属
として一体成形しても良いが、接点部材を金属により構
成すると帯電ローラ２が回転する際に、芯金１１と、こ
れに接触する接点部材がどちらも金属製のため、金属同
士の摺擦による異音が発生することがあった。従って、
導電グリス等の潤滑剤を芯金１１と接点部材の間に介在
させるようにするのが良い。The contact member 32 may be integrally formed as the same metal as the power supply sheet metal 31. However, if the contact member is made of metal, when the charging roller 2 rotates, the core member 11 and the contact member that comes into contact with the core member 11 are rotated. However, since both are made of metal, abnormal noise may be generated due to sliding friction between the metals. Therefore,
It is preferable that a lubricant such as conductive grease is interposed between the core metal 11 and the contact member.
【００２０】しかしながら、給電板金の接点部に導電グ
リスを塗布したものを用いると、導電性グリス等を用い
ることによる組み立て性の悪化、潤滑剤が切れたときに
再び異音が発生することがあるために上述したように接
点部材を導電性樹脂とするのがより好ましい。However, when a conductive grease is applied to the contact portion of the power supply sheet metal, use of the conductive grease or the like may deteriorate the assemblability, and may cause abnormal noise again when the lubricant runs out. Therefore, it is more preferable that the contact member is made of a conductive resin as described above.
【００２１】帯電ローラ２の芯金１１の端部を軸受けす
る軸受け２１はプラスチック材料で形成される。The bearing 21 for bearing the end of the metal core 11 of the charging roller 2 is made of a plastic material.
【００２２】電源７のバイアス電圧が給電板金３１に印
加され、給電板金３１から電気接点部材３２を通って帯
電ローラ芯金１１にバイアス電圧が供給される。A bias voltage of the power supply 7 is applied to the power supply sheet metal 31, and a bias voltage is supplied from the power supply sheet metal 31 to the charging roller core metal 11 through the electric contact member 32.
【００２３】ここで、電気接点部材３２には、帯電ロー
ラ２と接触する面と反対側の面に突起部３３を有してい
る。この突起部３３は、帯電ローラ２に振動等の原因に
より矢印方向に移動する力Ｆ1がかかったときに、画像
形成装置本体内壁３４に接触し、接点部分にかかる力を
画像形成装置本体内壁に伝達する作用を持つ。接点部材
３２に突起部３３がない場合、接点部分に掛かる力は、
そのまま給電板金３１にかかることになり、図４のごと
く給電板金３１の永久変形が生じる恐れがある。本実施
形態の如く、接点部材３２に突起部３３を設けることに
より、給電板金３１に力がかかることを防ぎ、突起部３
３は、電極部材３０が帯電ローラがある側と逆側に移動
するのを規制するので給電板金３１の永久変形を防止す
ることができる。Here, the electric contact member 32 has a projection 33 on the surface opposite to the surface in contact with the charging roller 2. The projection 33 comes into contact with the inner wall 34 of the image forming apparatus main body when a force F 1 moving in the direction of the arrow is applied to the charging roller 2 due to vibration or the like, and applies a force applied to the contact portion to the inner wall of the image forming apparatus main body. Has the effect of transmitting to. When the contact member 32 has no protrusion 33, the force applied to the contact portion is
The sheet metal 31 is directly applied to the sheet metal 31, and the sheet metal 31 may be permanently deformed as shown in FIG. As in the present embodiment, by providing the projection 33 on the contact member 32, it is possible to prevent a force from being applied to the power supply sheet metal 31, and the projection 3
3 regulates the movement of the electrode member 30 to the side opposite to the side where the charging roller is located, so that the power supply sheet metal 31 can be prevented from being permanently deformed.
【００２４】（第２の実施形態）図５は、帯電ローラ２
にバイアス電圧を印加する方法の第二の実施形態を示す
図である。(Second Embodiment) FIG.
FIG. 6 is a diagram illustrating a second embodiment of a method for applying a bias voltage to the second embodiment.
【００２５】本実施形態において、給電板金３１、接点
部材３２、帯電ローラ２等の構成は実施形態１と同様だ
が、接点部材３２に設けられた突起部３３が、帯電ロー
ラ芯金１１と略同軸上に配置されていることが異なる。In the present embodiment, the configuration of the power supply sheet metal 31, the contact member 32, the charging roller 2 and the like is the same as that of the first embodiment, but the projection 33 provided on the contact member 32 is substantially coaxial with the charging roller core 11. The difference is that they are placed on top.
【００２６】突起部分３３が帯電ローラ芯金１１と略同
軸上に配置されることによって、接点部材３２に帯電ロ
ーラ２からスラスト方向の力を受けた際に、突起部分３
３が横方向からの力を受けることなく安定して、接点部
材３２及び給電板金３１を支える事が可能になる。Since the projection 33 is disposed substantially coaxially with the charging roller core 11, when the contact member 32 receives a thrust force from the charging roller 2 in the thrust direction, the projection 3
3 can stably support the contact member 32 and the power supply sheet metal 31 without receiving a force from the lateral direction.
【００２７】（第３の実施形態）図６は、本発明の第三
の実施形態を表す図である。(Third Embodiment) FIG. 6 is a diagram showing a third embodiment of the present invention.
【００２８】本実施形態においては、実施形態１又は２
記載の帯電装置を、少なくとも感光体１と帯電装置を一
つのハウジング内に組み込んだプロセスカートリッジＣ
として供する事を特徴とする。このプロセスカートリッ
ジＣは、画像形成装置本体に対して着脱可能である。図
６においてプロセスカートリッジＣは、感光体１と帯電
装置の他にクリーニング装置５、現像器３を備える。In this embodiment, Embodiment 1 or 2
Process cartridge C in which at least the photosensitive member 1 and the charging device are incorporated in a single housing.
It is characterized by being offered as. This process cartridge C is detachable from the image forming apparatus main body. 6, the process cartridge C includes a cleaning device 5 and a developing device 3 in addition to the photoconductor 1 and the charging device.
【００２９】プロセスカートリッジは、画像形成装置本
体の所定の位置に装着されると、プロセスカートリッジ
側の受電端子３１と画像形成装置本体側の給電端子とが
接触してプリンタ本体側の電源とプロセスカートリッジ
側の電極とが電気的に連結される。本実施形態において
は、突起部３３はプロセスカートリッジＣの枠体の内壁
３４に当接可能に設けられる。When the process cartridge is mounted at a predetermined position of the image forming apparatus main body, the power receiving terminal 31 of the process cartridge and the power supply terminal of the image forming apparatus main body come into contact with each other, and the power supply of the printer main body and the process cartridge are connected. Side electrode is electrically connected. In the present embodiment, the projection 33 is provided so as to be able to abut on the inner wall 34 of the frame of the process cartridge C.
【００３０】なお以上全ての実施形態において突起部
は、複数設けても良い。In all the embodiments described above, a plurality of projections may be provided.
【００３１】[0031]
【発明の効果】以上説明したように、本発明によれば、
前記突起部を設けることで帯電ローラが、輸送時の振動
等によって長手方向に移動しようとする力が働いた場合
も、電極部材は永久変形を起こすことなく、安定した帯
電装置を供給することが可能になった。As described above, according to the present invention,
By providing the protrusion, the charging roller can supply a stable charging device without causing permanent deformation even when a force to move in the longitudinal direction due to vibration during transportation or the like is applied. It is now possible.
【００３２】また、突起部のうち少なくとも一つを帯電
ローラ回転軸と略同軸に配置することによって突起部に
横方向からの力がかかることなく、突起が破損しにく
く、より安定した帯電装置を供給することが可能になっ
た。Further, by arranging at least one of the projections substantially coaxially with the rotation axis of the charging roller, the projection is less likely to be damaged without a lateral force being applied to the projection, thereby providing a more stable charging device. It became possible to supply.
【図１】本発明の帯電装置の第一の実施形態を表す図。FIG. 1 is a diagram illustrating a first embodiment of a charging device of the present invention.
【図２】従来の帯電装置の給電機構を表す図。FIG. 2 is a diagram illustrating a power supply mechanism of a conventional charging device.
【図３】従来の帯電装置の給電板金が永久変形を起こし
たときの図。FIG. 3 is a diagram when a power supply sheet metal of a conventional charging device undergoes permanent deformation.
【図４】電気接点部材を用いた給電板金が永久変形を起
こしたときの図。FIG. 4 is a diagram when a power supply sheet metal using an electric contact member undergoes permanent deformation.
【図５】本発明の帯電装置の第二の実施形態を表す図。FIG. 5 is a diagram illustrating a charging device according to a second embodiment of the present invention.
【図６】本発明の帯電装置を備えるプロセスカートリッ
ジを表す図。FIG. 6 is a diagram illustrating a process cartridge including the charging device of the present invention.
【図７】本発明の帯電装置を備える画像形成装置を表す
図。FIG. 7 is a diagram illustrating an image forming apparatus including the charging device of the present invention.
【図８】帯電装置の正面図。FIG. 8 is a front view of the charging device.
【図９】本発明の帯電装置を備える画像形成装置を表す
図。FIG. 9 is a diagram illustrating an image forming apparatus including the charging device of the present invention.
１ 感光ドラム ２ 帯電ローラ ３ 現像装置 ４ 転写装置 ５ クリーニング装置 ６ シート材 ７ 電源 ８ スキャナユニット ９ 定着装置 １１ 帯電ローラ芯金 １２ 定着ローラ １３ 加圧ローラ ２１ 帯電ローラ軸受け ２２ バネ ３１ 給電板金 ３２ 接点部材 ３３ 突起 ３４ 画像形成装置又はプロセスカートリッジ本体内壁 ３５ 従来の給電板金 REFERENCE SIGNS LIST 1 photosensitive drum 2 charging roller 3 developing device 4 transfer device 5 cleaning device 6 sheet material 7 power supply 8 scanner unit 9 fixing device 11 charging roller core metal 12 fixing roller 13 pressure roller 21 charging roller bearing 22 spring 31 power supply sheet metal 32 contact member 33 Projection 34 Inner Wall of Image Forming Apparatus or Process Cartridge Main Body 35 Conventional Power Supply Sheet Metal
───────────────────────────────────────────────────── フロントページの続き (72)発明者 加藤 淳一 東京都大田区下丸子３丁目30番２号キヤ ノン株式会社内 (56)参考文献 特開 平６−19242（ＪＰ，Ａ) 特開 昭62−7066（ＪＰ，Ａ) 特開 平７−219308（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) G03G 15/02 G03G 15/06 ──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Junichi Kato 3-30-2 Shimomaruko, Ota-ku, Tokyo Inside Canon Inc. (56) References JP-A-6-19242 (JP, A) JP-A-62 -7066 (JP, A) JP-A-7-219308 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) G03G 15/02 G03G 15/06
Claims (3)
可能な帯電部材と、電圧を前記回転軸に印加するために
前記回転軸と接触する電極部材と、を有する帯電装置に
おいて、 前記電極部材は、前記回転軸の端面に接触する導電性樹
脂と、前記導電性樹脂の前記回転軸の端面と接する面と
反対側の面に接する板金と、を備え、前記導電性樹脂
は、前記回転軸と接する面と反対側の面に、前記板金が
前記帯電部材がある側と逆側に所定範囲以上移動するの
を規制するために、画像形成装置本体の壁又は画像形成
装置本体に着脱可能なプロセスカートリッジの壁に当接
可能な突起部を備えることを特徴とする帯電装置。1. A charging device comprising: a rotatable charging member having a rotating shaft for charging an object to be charged; and an electrode member in contact with the rotating shaft for applying a voltage to the rotating shaft, wherein the electrode comprises: The member includes: a conductive resin that is in contact with an end surface of the rotation shaft; and a sheet metal that is in contact with a surface of the conductive resin that is opposite to a surface that is in contact with the end surface of the rotation shaft. On the surface opposite to the surface in contact with the shaft, detachable to the wall of the image forming apparatus main body or the image forming apparatus main body in order to restrict the sheet metal from moving a predetermined range or more to the side opposite to the side where the charging member is located. A charging device comprising: a protruding portion capable of contacting a wall of a process cartridge.
に設けられることを特徴とする請求項１の帯電装置。2. The charging device according to claim 1, wherein the projection is provided substantially coaxially with the rotation axis.
ッジに設けられることを特徴とする請求項１又は２の帯
電装置。3. The charging device according to claim 1, wherein the charging device is provided in the process cartridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17095995A JP3192575B2 (en) | 1995-07-06 | 1995-07-06 | Charging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17095995A JP3192575B2 (en) | 1995-07-06 | 1995-07-06 | Charging device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0922159A JPH0922159A (en) | 1997-01-21 |
| JP3192575B2 true JP3192575B2 (en) | 2001-07-30 |
Family
ID=15914564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17095995A Expired - Fee Related JP3192575B2 (en) | 1995-07-06 | 1995-07-06 | Charging device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3192575B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5649366B2 (en) * | 2010-08-17 | 2015-01-07 | キヤノン株式会社 | Image forming apparatus |
| JP6387741B2 (en) * | 2014-08-25 | 2018-09-12 | ブラザー工業株式会社 | Drum cartridge |
-
1995
- 1995-07-06 JP JP17095995A patent/JP3192575B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0922159A (en) | 1997-01-21 |
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