JPH07333971A - Developing device of electrophotographic device - Google Patents
Developing device of electrophotographic deviceInfo
- Publication number
- JPH07333971A JPH07333971A JP6155378A JP15537894A JPH07333971A JP H07333971 A JPH07333971 A JP H07333971A JP 6155378 A JP6155378 A JP 6155378A JP 15537894 A JP15537894 A JP 15537894A JP H07333971 A JPH07333971 A JP H07333971A
- Authority
- JP
- Japan
- Prior art keywords
- developer
- roller
- blade
- developing
- hopper
- 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
Landscapes
- Dry Development In Electrophotography (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、たとえばプリンタ・
複写機・ファクシミリ・印刷機など、シートに画像を記
録する電子写真装置に適用しうる。詳しくは、そのよう
な電子写真装置において、現像剤を付着して感光体上の
潜像を可視像化する現像装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention
It can be applied to an electrophotographic apparatus that records an image on a sheet, such as a copying machine, a facsimile, and a printing machine. More specifically, the present invention relates to such an electrophotographic apparatus which develops a latent image on a photoconductor by making a developer adhere to the developing apparatus.
【０００２】[0002]
【従来の技術】従来、たとえば複写機の現像装置の中に
は、たとえば図８に示すように、現像剤ホッパ１内の送
り出し口１ａ側にモルトプレンのような弾性部材２・３
を設けるとともに、外周に軸方向の凹溝４ａを有する現
像剤補充ロ−ラ４をそれら弾性部材２・３と接触して回
転自在に設けて該送り出し口１ａを塞ぐ構成としたもの
がある。2. Description of the Related Art Conventionally, in a developing device of a copying machine, for example, as shown in FIG. 8, an elastic member 2 or 3 such as moltoprene is provided on the delivery port 1a side in a developer hopper 1.
And a developer replenishing roller 4 having a groove 4a in the axial direction on the outer circumference is provided rotatably in contact with the elastic members 2 and 3 to close the delivery port 1a.
【０００３】そして、送り出し口１ａ下方の図示しない
現像剤室内の現像剤が不足したとき、現像剤補充ロ−ラ
４を矢示する時計方向へ回転し、凹溝４ａ内に入れた新
しい現像剤を弾性部材３のエッジ３ａで掻き落して現像
室へと補充していた。When there is a shortage of developer in a developer chamber (not shown) below the delivery port 1a, the developer replenishing roller 4 is rotated in the clockwise direction as shown by the arrow to insert a new developer into the groove 4a. Was scraped off by the edge 3a of the elastic member 3 and replenished in the developing chamber.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、従来の
そのような現像装置では、経時、弾性部材３のエッジ３
ａが摩耗するにともない前記凹溝４ａ内へのエッジ３ａ
の食い込みが小さくなって掻き落し量が少なくなり、現
像剤の補充量が低下する不具合があった。However, in such a conventional developing device, the edge 3 of the elastic member 3 is aged over time.
edge 3a into groove 4a as a wears
However, there was a problem that the amount of scraping was reduced, the amount of scraping was reduced, and the replenishment amount of the developer was reduced.
【０００５】そこで、この発明の目的は、現像剤補充ロ
−ラを回転し、その凹溝内に入れた新しい現像剤を弾性
部材で掻き落して補充する現像装置において、経時、弾
性部材の摩耗にともない現像剤の補充量が低下すること
を防止することにある。Therefore, an object of the present invention is, in a developing device in which a developer replenishing roller is rotated, and new developer contained in the concave groove is scraped off and replenished by an elastic member, so that the elastic member is worn over time. This is to prevent the replenishment amount of the developer from being lowered.
【０００６】[0006]
【課題を解決するための手段】そのため、この発明は、
たとえば以下の図示実施例に示すように、外周に軸方向
の凹溝３４ａを有する現像剤補充ロ−ラ３４を回転し、
その凹溝３４ａ内に入れた新しい現像剤を弾性部材で掻
き落して現像室２３へと補充する電子写真装置の現像装
置１２において、前記弾性部材をブレード形状に形成
し、その弾性ブレード３９を撓ませて先端を前記現像剤
補充ロ−ラ３４外周に押し当ててなることを特徴とす
る。Therefore, the present invention provides
For example, as shown in the following illustrated embodiment, a developer replenishing roller 34 having a groove 34a in the outer peripheral direction is rotated,
In the developing device 12 of the electrophotographic apparatus in which the new developer contained in the groove 34a is scraped off by the elastic member and replenished into the developing chamber 23, the elastic member is formed into a blade shape and the elastic blade 39 is bent. The tip is pressed against the outer periphery of the developer replenishing roller 34.
【０００７】[0007]
【作用】そして、この発明では、現像室２３内の現像剤
が不足したとき、現像剤補充ロ−ラ３４を回転し、凹溝
３４ａ内に入れた新しい現像剤を弾性ブレード３９の先
端で掻き落して現像室２３内へと補充する。しかして、
経時、弾性ブレード３９の先端が摩耗しても該弾性ブレ
ード３９の復元力で現像剤補充ロ−ラ３４への押し当て
を確保する。In the present invention, when the developer in the developing chamber 23 is insufficient, the developer replenishing roller 34 is rotated and the new developer contained in the groove 34a is scratched by the tip of the elastic blade 39. It is dropped and replenished into the developing chamber 23. Then,
Even if the tip of the elastic blade 39 wears over time, the restoring force of the elastic blade 39 ensures pressing against the developer replenishing roller 34.
【０００８】[0008]
【実施例】以下、図面を参照しつつ、この発明の実施例
について説明する。図７は、この発明の一実施例である
現像装置を備えるレーザ複写機で、その要部の概略構成
を示す。Embodiments of the present invention will be described below with reference to the drawings. FIG. 7 shows a schematic structure of a main part of a laser copying machine provided with a developing device according to an embodiment of the present invention.
【０００９】図中符号１０で示すものは、装置本体（図
示省略）内のほぼ中央に設けるドラム状の感光体であ
る。感光体１０のまわりには、図中矢印で示す駆動方向
に、帯電装置１１・現像装置１２・転写装置１３・クリ
ーニング装置１４を設ける。A reference numeral 10 in the drawing denotes a drum-shaped photosensitive member provided substantially at the center of the apparatus main body (not shown). A charging device 11, a developing device 12, a transfer device 13, and a cleaning device 14 are provided around the photoconductor 10 in the driving direction indicated by the arrow in the figure.
【００１０】そして、記録時、タイミングをとってシー
トを矢印Ａ方向から感光体１０の下側に搬送する。一
方、感光体１０は、矢示する時計方向に駆動し、その
際、帯電装置１１で表面を一様に帯電し、光書込み装置
（図示省略）からの光Ｌを照射して感光体１０上に静電
潜像を形成する。この潜像は、現像装置１２位置を通る
とき現像剤によって可視像化する。そして、この可視像
を、感光体１０の下側に搬送されてきたシート上に転写
装置１３で転写し、それから定着装置（図示省略）へと
搬送してそこで転写画像を定着する。At the time of recording, the sheet is conveyed to the lower side of the photoconductor 10 from the direction of arrow A at a timing. On the other hand, the photoconductor 10 is driven in the clockwise direction indicated by the arrow, and at that time, the surface of the photoconductor 10 is uniformly charged by the charging device 11 and the light L from an optical writing device (not shown) is applied to the photoconductor 10. An electrostatic latent image is formed on. This latent image is visualized by the developer when passing through the position of the developing device 12. Then, this visible image is transferred onto the sheet conveyed to the lower side of the photoconductor 10 by the transfer device 13, and then transferred to a fixing device (not shown) to fix the transferred image there.
【００１１】その記録後、シートを装置本体の外部へと
排出する一方、感光体１０上の残留現像剤をクリーニン
グ装置１４で除去する。After the recording, the sheet is discharged to the outside of the apparatus main body, and the residual developer on the photoconductor 10 is removed by the cleaning device 14.
【００１２】ところで、上述した現像装置１２は、詳し
くは図１に示すように構成する。図中符号２０は、現像
タンクである。その現像タンク２０は、前記感光体１０
の軸方向に横長形状で、図中左側に現像窓２０ａを設
け、反対の右側上に補充窓２０ｂを設けるとともに、内
部をセパレータ２２で上下に区画して下方に現像室２３
を形成する。そして、現像室２３内には、現像窓２０ａ
側に現像ローラ２４・２５を上下に設け、それら現像ロ
ーラ２４・２５から補充窓２０ｂ側に順にパドル２６・
撹拌ロ−ラ２７を設けるとともに、該撹拌ロ−ラ２７の
下に濃度センサ２８を設ける。By the way, the developing device 12 described above is constructed in detail as shown in FIG. Reference numeral 20 in the drawing is a developing tank. The developing tank 20 is the same as the photoconductor 10 described above.
Is formed in a laterally long shape in the axial direction, a developing window 20a is provided on the left side in the drawing, and a replenishing window 20b is provided on the opposite right side.
To form. Then, in the developing chamber 23, the developing window 20a
Side developing rollers 24 and 25 are provided above and below, and the paddles 26 and 25 are sequentially provided from the developing rollers 24 and 25 to the replenishment window 20b side.
A stirring roller 27 is provided, and a concentration sensor 28 is provided below the stirring roller 27.
【００１３】上述した現像タンク２０の補給窓２０ｂ側
には、それと連通して現像剤ホッパ３０を設ける。その
現像剤ホッパ３０は、図２にも示すように、前記現像タ
ンク２０と同じく感光体１０の軸方向に横長の箱形状に
つくり、下面に送り出し口３０ａを下向きに開口する。On the side of the replenishment window 20b of the above-mentioned developing tank 20, a developer hopper 30 is provided in communication with it. As shown in FIG. 2, the developer hopper 30 is formed in a box shape that is horizontally long in the axial direction of the photoconductor 10 like the developing tank 20, and has a delivery port 30a opened downward on the lower surface.
【００１４】そして、前記現像剤ホッパ３０内には、上
部に搬送スクリュー３１を設ける。その搬送スクリュー
３１は、図３に示すように、スクリュー軸３２の両端を
現像剤ホッパ３０の両側板で支持して回転自在に設ける
とともに、そのスクリュー軸３２の一端にスクリューギ
ヤ３３を設ける。In the developer hopper 30, a conveying screw 31 is provided on the upper part. As shown in FIG. 3, the conveying screw 31 has both ends of a screw shaft 32 supported by both side plates of the developer hopper 30 so as to be rotatable, and a screw gear 33 is provided at one end of the screw shaft 32.
【００１５】一方、前記現像剤ホッパ３０内の下部に
は、図１乃至図３に示すように、前記送り出し口３０ａ
を塞いで現像剤補充ロ−ラ３４を設ける。その現像剤補
充ロ−ラ３４は、外周に軸方向の凹溝３４ａを複数備
え、そのロ−ラ軸３５の両端を前記現像剤ホッパ３０の
両側板で支持して回転自在に設ける。そのロ−ラ軸３５
の一端には、補充ロ−ラギヤ３６を設ける。その補充ロ
−ラギヤ３６は、前記スクリューギヤ３３と噛みあわせ
るとともに、装置本体内に適宜設けるクラッチ３７のク
ラッチギヤ３８と噛みあわせてなる。そして、クラッチ
３７を介して装置本体の駆動系からの駆動力を前記補給
ロ−ラギヤ３６および前記スクリューギヤ３３に伝達す
る構成とする。On the other hand, in the lower part of the developer hopper 30, as shown in FIGS. 1 to 3, the delivery port 30a is provided.
And a developer replenishing roller 34 is provided. The developer replenishing roller 34 is provided with a plurality of axial grooves 34a on the outer circumference, and both ends of the roller shaft 35 are rotatably supported by both side plates of the developer hopper 30. The roller shaft 35
A supplementary roller gear 36 is provided at one end of the. The supplementary roller gear 36 meshes with the screw gear 33 and also meshes with a clutch gear 38 of a clutch 37 that is appropriately provided in the main body of the apparatus. Then, the driving force from the drive system of the apparatus main body is transmitted to the replenishing roller gear 36 and the screw gear 33 via the clutch 37.
【００１６】また、図１および図２に示すように、前記
現像剤補充ロ−ラ３４をはさんでその径方向一側にはモ
ルトプレン３８を設け、他側に弾性ブレード３９を設け
る。前記モルトプレン３８は、現像剤ホッパ３０の下部
内面に接着し、表面を前記現像剤補充ロ−ラ３４外周と
接触する。一方、弾性ブレード３９は、ポリエステルフ
ィルムを用いて形成し、基端部をブレードホルダ４０に
取り付ける。そして、ブレードホルダ４０を現像剤ホッ
パ３０の下部に取り付けて送り出し口３０ａから現像剤
ホッパ３０内に弾性ブレード３９の先端部を入れ、撓ま
せてその先端を該現像剤補充ロ−ラ３４の外周に押し当
ててなる。Further, as shown in FIGS. 1 and 2, a moltoprene 38 is provided on one side in the radial direction of the developer replenishing roller 34, and an elastic blade 39 is provided on the other side thereof. The moltoprene 38 adheres to the inner surface of the lower portion of the developer hopper 30, and its surface contacts the outer circumference of the developer replenishing roller 34. On the other hand, the elastic blade 39 is formed by using a polyester film, and the base end portion is attached to the blade holder 40. Then, the blade holder 40 is attached to the lower portion of the developer hopper 30, and the tip of the elastic blade 39 is inserted into the developer hopper 30 through the feed port 30a and bent to bend the tip of the elastic blade 39 to the outer periphery of the developer replenishing roller 34. Be pressed against.
【００１７】ところで、上述した現像剤ホッパ３０は、
図４に示すように、長さ方向一側に現像剤入口３０ｂを
上向きに開口する。そして、現像剤ホッパ３０の長さ方
向と直交してボトルホルダ４２を設ける。By the way, the developer hopper 30 described above is
As shown in FIG. 4, the developer inlet 30b is opened upward on one side in the length direction. Then, the bottle holder 42 is provided orthogonally to the length direction of the developer hopper 30.
【００１８】ボトルホルダ４２は、ボトル受け台４３を
横長の中空ブロック状につくり、その長さ方向一側にホ
ルダ部４４を上向きに突出して設ける。そのホルダ部４
４内には、中空路４５を形成する。その中空路４５は、
一方に嵌合口４５ａを横向きに備え、他方に前記現像剤
入口３０ｂと一致して出口４５ｂを備えてなる。そし
て、前記嵌合口４５ａ内には、回転筒４６を回動自在に
設ける。その回転筒４６は、外周にギヤ部を有し、該ギ
ヤ部とモータギヤ４７とを噛み合わせてなる。そのモー
タ４８は、ボトル受け台４３内に適宜支持して設け、図
示しない制御手段と電気的に接続してなる。そして、前
記回転筒４６内には、現像剤ボトル５０の上端部を圧入
してなる。その現像剤ボトル５０は、内面に螺旋状の羽
根部５０ａを備え、前記ボトル受け台４３に横向きに乗
せ、口部５０ｂを中空路４５内に開口する。In the bottle holder 42, the bottle receiving base 43 is formed in the shape of a horizontally elongated hollow block, and the holder portion 44 is provided on one side in the length direction so as to project upward. The holder part 4
A hollow passage 45 is formed in the inside 4. The hollow passage 45 is
One side is provided with a fitting port 45a in the lateral direction, and the other side is provided with an outlet 45b which coincides with the developer inlet 30b. A rotary cylinder 46 is rotatably provided in the fitting port 45a. The rotary cylinder 46 has a gear portion on the outer circumference, and the gear portion and the motor gear 47 are meshed with each other. The motor 48 is appropriately supported and provided in the bottle pedestal 43, and is electrically connected to a control means (not shown). The upper end of the developer bottle 50 is press-fitted into the rotary cylinder 46. The developer bottle 50 is provided with a spiral blade portion 50a on the inner surface thereof, is placed on the bottle receiving base 43 sideways, and the mouth portion 50b is opened in the hollow passage 45.
【００１９】しかして、現像時、図１に示すように、前
記撹拌ローラ２７を矢示する時計方向へ回転して現像剤
を撹拌しながら前記パドル２６に送り、そのパドル２６
を反時計方向へ回転して現像剤を前記現像ロ−ラ２４お
よび現像ロ−ラ２５に付着する。そして、それら現像ロ
−ラ２４・２５上の現像剤を感光体１０の表面に付着し
て現像を行う。一方、現像ロ−ラ２４の現像剤を現像ド
クタ５４で薄層化するとき、掻き落された現像剤は前記
セパレータ２２上を通って再び現像室２３内に回収す
る。During development, as shown in FIG. 1, the agitating roller 27 is rotated in the clockwise direction indicated by the arrow to agitate the developer, and the developer is sent to the paddle 26.
Is rotated counterclockwise to attach the developer to the developing roller 24 and the developing roller 25. Then, the developer on the developing rollers 24 and 25 is attached to the surface of the photoconductor 10 to perform development. On the other hand, when the developer in the developing roller 24 is thinned by the developing doctor 54, the scraped developer passes over the separator 22 and is collected again in the developing chamber 23.
【００２０】経時、現像室２３内のトナー濃度が一定以
下となったときには、それを濃度センサ２８で検知す
る。そして、その検知信号に基づき図示しない制御手段
により図３に示す前記クラッチ３７をつないで装置本体
の駆動系からの駆動力を前記クラッチギヤ３８に伝達す
る。そうして、クラッチギヤ３８を回転駆動し、その駆
動力を前記補充ロ−ラギヤ３６および前記スクリューギ
ヤ３３に伝えて前記現像剤補充ロ−ラ３４および搬送ス
クリュー３１を回転駆動する。そして、凹溝３４ａ内に
入り込む新しい現像剤を現像剤補充ロ−ラ３４の回転に
より送り出し口３０ａへと搬送する。そのとき、モルト
プレン３８の弾性力で凹溝３４ａ内に現像剤を押し込
む。それから、凹溝３４ａ内に食い込む弾性ブレード３
９の先端で掻き落して現像室２３内に新しい現像剤を補
充する。When the toner density in the developing chamber 23 becomes lower than a certain level with the passage of time, the density sensor 28 detects it. Based on the detection signal, the control means (not shown) engages the clutch 37 shown in FIG. 3 to transmit the driving force from the drive system of the apparatus main body to the clutch gear 38. Then, the clutch gear 38 is rotationally driven, and its driving force is transmitted to the replenishing roller gear 36 and the screw gear 33 to rotationally drive the developer replenishing roller 34 and the conveying screw 31. Then, the new developer entering the concave groove 34a is conveyed to the delivery port 30a by the rotation of the developer replenishing roller 34. At that time, the elastic force of the moltoprene 38 pushes the developer into the groove 34a. Then, the elastic blade 3 that bites into the groove 34a
It scrapes off at the tip of 9 and replenishes the developing chamber 23 with new developer.
【００２１】しかして、経時、弾性ブレード３９の先端
が摩耗しても該弾性ブレード３９の復元力で現像剤補充
ロ−ラ３４への押し当てを確保する。したがって、弾性
ブレード３９の先端が摩耗しても、図５に示すように、
現像剤の補充量が少なくなることなく、十分な現像剤を
長時間にわたって安定して補充することができる。よっ
て、従来のモルトプレンのように摩耗するにつれて図示
するように現像剤の補充量が低下することを防止するこ
とができる。Therefore, even if the tip of the elastic blade 39 wears over time, the restoring force of the elastic blade 39 ensures pressing against the developer replenishing roller 34. Therefore, even if the tip of the elastic blade 39 is worn, as shown in FIG.
It is possible to stably replenish a sufficient amount of the developer for a long time without reducing the replenishment amount of the developer. Therefore, it is possible to prevent the replenishment amount of the developer from decreasing as shown in the figure as the conventional moltoprene wears.
【００２２】また、図６に示すように、弾性ブレード３
９を用いると、従来のモルトプレンを用いるものに比べ
て、現像剤補充ロ−ラ３４の同一回転数で１.５倍の補
充量を得ることができた。このことから、現像剤補充ロ
−ラ３４を低速回転しても十分な補充量を得ることがで
きる。よって、たとえば、現像剤補充ロ−ラ３４を高速
回転することによる発熱で現像剤を凝縮する不具合を防
止することができる。Further, as shown in FIG. 6, the elastic blade 3
With the use of No. 9, it was possible to obtain a replenishment amount of 1.5 times at the same number of revolutions of the developer replenishing roller 34 as compared with the conventional one using moltoprene. From this, a sufficient replenishment amount can be obtained even if the developer replenishing roller 34 is rotated at a low speed. Therefore, for example, it is possible to prevent the problem that the developer is condensed by the heat generated by rotating the developer replenishing roller 34 at a high speed.
【００２３】一方、経時、前記現像剤ホッパ３０内の現
像剤が一定量以下となったときには、図示しない現像剤
エンドセンサでそれを検知する。そして、その検知信号
に基づき図示しない制御手段により図４に示す前記モー
タ４８を駆動してモータギヤ４７を回転駆動し、回転筒
４６を介して現像剤ボトル５０を回転する。そのとき、
螺旋状の羽根部５０ａで現像剤を口部５０ｂ側へ送って
押し出す。そして、前記出口４５ｂおよび現像剤入口３
０ｂを通して現像剤ホッパ３０内へ補給する。On the other hand, when the amount of the developer in the developer hopper 30 becomes less than a certain amount with the passage of time, it is detected by a developer end sensor (not shown). Then, based on the detection signal, the control means (not shown) drives the motor 48 shown in FIG. 4 to rotationally drive the motor gear 47, and the developer bottle 50 is rotated via the rotary cylinder 46. then,
The developer is sent to the mouth portion 50b side and pushed out by the spiral blade portion 50a. Then, the outlet 45b and the developer inlet 3
Replenish into the developer hopper 30 through 0b.
【００２４】なお、上述した図示実施例では、弾性ブレ
ード３９は、ポリエステルフィルムを用いて形成した。
しかし、弾性ブレード３９は、図示省略するが、ウレタ
ンゴムを用いて形成する構成としてもよい。これによ
り、弾性ブレード３９の現像剤補充ロ−ラ３４への動作
音をなくすことができる。In the illustrated embodiment described above, the elastic blade 39 is formed by using a polyester film.
However, although not shown, the elastic blade 39 may be formed of urethane rubber. As a result, the operation noise of the elastic blade 39 to the developer replenishing roller 34 can be eliminated.
【００２５】[0025]
【発明の効果】したがって、この発明によれば、弾性ブ
レードを撓ませて先端を現像剤補充ロ−ラに押し当てる
構成とすることにより、経時、弾性ブレードの先端が摩
耗しても該弾性ブレードの復元力で現像剤補充ロ−ラへ
の押し当てを確保するので、摩耗により現像剤の補充量
を低下することなく、十分な量の現像剤を長期にわたっ
て安定して補充することができる。Therefore, according to the present invention, the elastic blade is bent to press the tip against the developer replenishing roller, so that even if the tip of the elastic blade wears over time, the elastic blade can be worn. Since the pressing force against the developer replenishing roller is secured by the restoring force of 1, the sufficient amount of the developer can be stably replenished for a long period of time without decreasing the replenishment amount of the developer due to abrasion.
【図１】この発明の一実施例であるレーザ複写機の現像
装置の構成図である。FIG. 1 is a configuration diagram of a developing device of a laser copying machine according to an embodiment of the present invention.
【図２】その現像装置に備える現像剤ホッパの拡大構成
図である。FIG. 2 is an enlarged configuration diagram of a developer hopper provided in the developing device.
【図３】その現像剤ホッパの長さ方向と直交する方向か
ら見て示す拡大構成図である。FIG. 3 is an enlarged configuration diagram showing the developer hopper viewed from a direction orthogonal to the length direction.
【図４】その現像剤ホッパと連通して接続する現像剤ボ
トル、そのボトルホルダの概略構成図である。FIG. 4 is a schematic configuration diagram of a developer bottle and a bottle holder thereof, which are connected to communicate with the developer hopper.
【図５】弾性ブレードが摩耗したときの補充量の変化と
モルトプレンが摩耗したときの補充量の変化とを、横軸
に時間の経過をとり、縦軸に補給量をとって示すグラフ
である。FIG. 5 is a graph showing changes in the amount of replenishment when the elastic blade is worn and changes in the amount of replenishment when the moltoprene is worn, with the abscissa representing time and the ordinate representing the amount of replenishment. .
【図６】現像剤補充ロ−ラの同一回転数において、弾性
ブレードで掻き落した量とモルトプレンで掻き落した量
との差を説明する説明図である。FIG. 6 is an explanatory diagram illustrating a difference between the amount scraped by the elastic blade and the amount scraped by moltoprene at the same rotation number of the developer replenishing roller.
【図７】前記現像装置を備える画像記録装置の感光体周
辺の概略構成図である。FIG. 7 is a schematic configuration diagram around a photosensitive member of an image recording apparatus including the developing device.
【図８】従来の複写機の現像装置における現像剤ホッパ
の概略構成図である。FIG. 8 is a schematic configuration diagram of a developer hopper in a developing device of a conventional copying machine.
１２ 現像装置 ２３ 現像室 ３４ 現像剤補充ロ−ラ ３４ａ 凹溝 ３９ 弾性ブレード 12 developing device 23 developing chamber 34 developer replenishing roller 34a concave groove 39 elastic blade
Claims (1)
ロ−ラを回転し、その凹溝内に入れた新しい現像剤を弾
性部材で掻き落して現像室へと補充する電子写真装置の
現像装置において、前記弾性部材をブレード形状に形成
し、その弾性ブレードを撓ませて先端を前記現像剤補充
ロ−ラ外周に押し当ててなる、電子写真装置の現像装
置。1. An electrophotographic apparatus in which a developer replenishing roller having a groove in the axial direction on the outer periphery is rotated, and new developer contained in the groove is scraped off by an elastic member and replenished into a developing chamber. The developing device of the electrophotographic device, wherein the elastic member is formed into a blade shape, and the elastic blade is bent to press the tip end against the outer periphery of the developer replenishing roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6155378A JPH07333971A (en) | 1994-06-14 | 1994-06-14 | Developing device of electrophotographic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6155378A JPH07333971A (en) | 1994-06-14 | 1994-06-14 | Developing device of electrophotographic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07333971A true JPH07333971A (en) | 1995-12-22 |
Family
ID=15604640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6155378A Pending JPH07333971A (en) | 1994-06-14 | 1994-06-14 | Developing device of electrophotographic device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07333971A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8055162B2 (en) * | 2007-05-31 | 2011-11-08 | Sharp Kabushiki Kaisha | Toner bottle and apparatus for image formation |
-
1994
- 1994-06-14 JP JP6155378A patent/JPH07333971A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8055162B2 (en) * | 2007-05-31 | 2011-11-08 | Sharp Kabushiki Kaisha | Toner bottle and apparatus for image formation |
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