JPH04135761U - Developing device scraper - Google Patents
Developing device scraperInfo
- Publication number
- JPH04135761U JPH04135761U JP1991073722U JP7372291U JPH04135761U JP H04135761 U JPH04135761 U JP H04135761U JP 1991073722 U JP1991073722 U JP 1991073722U JP 7372291 U JP7372291 U JP 7372291U JP H04135761 U JPH04135761 U JP H04135761U
- Authority
- JP
- Japan
- Prior art keywords
- developer
- toner
- storage section
- scraper
- developer storage
- 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
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 230000001112 coagulating effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/07—Stirrers characterised by their mounting on the shaft
- B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
- B01F27/0727—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis having stirring elements connected to the stirrer shaft each by two or more radial rods, e.g. the shaft being interrupted between the rods, or of crankshaft type
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Dry Development In Electrophotography (AREA)
Abstract
(57)【要約】 （修正有）
【目的】現像剤収容部内における現像剤の偏在を解消
し、収容部の容積効率を向上させることのできる現像装
置のスクレーパを提供する。
【構成】軸部に、その長手方向中心線に対して所定の角
度を有し、長手方向略中央で交差する平面に沿うブレー
ドが左右対象に形成された単位ブロック３０Ａが、ブレ
ードの位相を９０度づつずらした状態で軸部延設方向に
複数並設されて構成する。
(57) [Summary] (with modifications) [Objective] To provide a scraper for a developing device that can eliminate uneven distribution of developer in a developer storage section and improve the volumetric efficiency of the storage section. [Structure] A unit block 30A has blades symmetrically formed on the shaft portion along a plane that has a predetermined angle with respect to its longitudinal center line and intersects at approximately the center in the longitudinal direction. A plurality of shafts are arranged side by side in the direction in which the shaft extends, with the shaft portions being shifted by degrees.
Description
【０００１】0001
本考案は、電子写真法に於る現像装置の現像剤収容部内に設けられ、回転駆動 されて現像剤収容部内のトナーを現像ローラに供給する現像装置のスクレーパに 関する。 This invention is installed in the developer storage section of a developing device in electrophotography, and is rotatably driven. The scraper of the developing device supplies the toner in the developer storage chamber to the developing roller. related.
【０００２】0002
従来より、表面を光導電体で形成した感光ドラム表面を露光して静電潜像を形 成し、この潜像にトナーを付着させて現像し、該トナーを記録用紙に転写すると 共に定着器によって定着させる、所謂電子写真法を利用した電子複写機やレーザ ビームプリンタ等の画像形成装置が知られている。 電子写真法に於る現像メカニズムには種々の方式があり、又、それに用いられ る現像剤も異るものであるが、一般的な現像装置は帯電させたトナーを感光ドラ ムに近接配置したローラ（現像ローラ）で現像域迄搬送するよう構成される。 このような現像装置では、容器状の現像剤収容部に隣接して現像ローラが配置 され、現像剤収容部内には回転駆動されて現像ローラへ現像剤を供給するスクレ ーパが設けられる。 スクレーパは、現像ローラへの現像剤供給の他に現像剤の凝固団塊化を防ぐと いう機能も併せ持ち、通常、回転軸に平板状や平板の中央部に開口部を形成した ような形状の複数のブレードを突設して構成される。 Conventionally, an electrostatic latent image is formed by exposing the surface of a photosensitive drum whose surface is made of a photoconductor. When a toner is attached to this latent image and developed, and the toner is transferred to recording paper, Electronic copiers and lasers that use the so-called electrophotographic method, both of which use a fixing device to fix images. Image forming apparatuses such as beam printers are known. There are various development mechanisms in electrophotography, and there are various methods used for it. The developer used for the development is different, but a typical development device uses a photosensitive drum to transfer the charged toner. A roller (developing roller) disposed close to the image forming apparatus is configured to transport the image to the developing area. In such a developing device, a developing roller is placed adjacent to a container-shaped developer storage section. There is a screwdriver inside the developer storage unit that is driven to rotate and supplies the developer to the developing roller. A server will be provided. In addition to supplying developer to the developing roller, the scraper also prevents the developer from coagulating into lumps. It also has the function of It is constructed by protruding a plurality of blades shaped like this.
【０００３】0003
ところで、専ら文字の印字に用いられる（即ち所謂プリンタとして用いられる ）画像形成装置では、文章の構成から書面の幅方向に於る現像装置内のトナー消 費にムラが生ずるものである。つまり、文頭を左端に揃えて横書きした文章を印 字する場合、文章は必ずしも書面の右端迄達せずに終了することから、書面の左 端側と対応する部位は書面の右端側と対応する部位よりトナー消費が多く（換言 すれば書面の右端側と対応する部位のトナー消費が少なく）、従って、現像剤収 容部内で現像剤が書面の幅方向（即ち現像ローラの長手方向）に偏在することと なる。 しかし乍ら、上記従来構成のスクレーパは、現像剤をその現像剤収容部内で現 像ローラの長手方向に移動させるように構成されていないことから現像剤収容部 内に於る現像剤の偏在を解消するようには機能せず、その結果、現像剤収容部内 のトナーを有効に使用することができず、現像剤収容部の容積利用効率が低いと いう問題があった。即ち、現像装置には、その現像剤の補充管理情報とすべくト ナー残量を検知するトナーセンサが現像剤収容部内に臨んで設けられるが、この トナーセンサを現像剤収容部のトナー消費の少ない書面の右端側と対応する部位 に臨んで配置すると書面の左端側と対応する現像剤収容部内の現像剤が不足する ことからトナー消費の多い書面の左端側と対応する部位に臨んで配置しなければ ならない。その場合、トナーセンサが当該部位のトナーが不足を検知した時点で は書面の右端側と対応する現像剤収容部内には現像剤が余っており、現像剤収容 部内のトナーを使い切る以前に新たなトナーを供給しなければならないこととな ってトナー供給が合理的に行なえないものであった。 By the way, it is used exclusively for printing characters (i.e. used as a so-called printer). ) In image forming devices, toner erasure in the developing device in the width direction of the document is limited due to the structure of the document. This causes uneven costs. In other words, you can print horizontally written text with the beginning of the sentence aligned to the left. When writing text, the text does not necessarily end without reaching the right edge of the document, so The area corresponding to the edge side consumes more toner than the area corresponding to the right edge side of the document (in other words, This reduces toner consumption in the area corresponding to the right edge of the document), and therefore reduces developer storage. The developer may be unevenly distributed in the width direction of the document (i.e., the longitudinal direction of the developing roller) within the container. Become. However, the scraper with the above-mentioned conventional structure does not allow the developer to be developed in the developer storage section. Since the image roller is not configured to move in the longitudinal direction, the developer storage section It does not function to eliminate the uneven distribution of developer in the developer container, and as a result, of toner cannot be used effectively, and the volume utilization efficiency of the developer storage section is low. There was a problem. In other words, the developing device has a tray that serves as developer replenishment management information. A toner sensor that detects the remaining amount of toner is installed facing inside the developer storage section. Place the toner sensor in the part of the developer storage area that corresponds to the right side of the document where toner consumption is low. If you place it facing the document, there will be a shortage of developer in the developer storage area that corresponds to the left edge of the document. Therefore, it must be placed facing the left edge of the document that consumes a lot of toner. It won't happen. In that case, when the toner sensor detects that the toner in the area is insufficient, There is excess developer in the developer storage area corresponding to the right edge of the document. New toner must be supplied before the toner in the department is used up. Therefore, it was not possible to supply toner rationally.
【０００４】0004
本考案は、上記の如き事情に鑑み、現像剤を現像剤収容部内で現像ローラの長 手方向に移動させ、現像剤収容部内に於る現像剤の偏在を解消して現像ローラの 長手方向に於て均等とし、合理的なトナー供給を可能として現像剤収容部の容積 利用効率を向上させることのできる現像装置のスクレーパの提供、を目的とする 。 In view of the above-mentioned circumstances, the present invention is designed to store the developer within the developer storage section over the length of the developing roller. By moving the developing roller in the hand direction, it eliminates the uneven distribution of developer in the developer storage section. The volume of the developer storage area is made uniform in the longitudinal direction to enable reasonable toner supply. The purpose is to provide a scraper for a developing device that can improve usage efficiency. .
【０００５】[0005]
上記目的達成の為、本考案に係る現像装置のスクレーパは、軸部に、その長手 方向中心線に対して所定の角度を有し該中心線の長手方向略中央で交差する平面 に沿うブレードが左右対象に形成された単位ブロックが、ブレードの位相を９０ 度づつずらした状態で軸部延設方向に複数並設されて構成されている。 本構成 によれば、当該スクレーパの回転によって各単位ブロックの左右のブレードは現 像剤を互いに異なる方向に移動させるように作用し、その結果、偏在している現 像剤は多い部位からい少ない部位に徐々に移動して現像ローラの長手方向に於て 均等となるものである。 In order to achieve the above purpose, the scraper of the developing device according to the present invention has a longitudinal A plane that has a predetermined angle with respect to the center line and intersects the center line approximately at the center in the longitudinal direction. A unit block in which the blades along the left and right sides are formed symmetrically sets the blade phase to 90 A plurality of the shafts are arranged in parallel in the direction in which the shaft extends, with the shaft portions being shifted by degrees. Main composition According to Acts to move the image material in different directions, resulting in an unevenly distributed image. The developer gradually moves from an area with more to an area with less, and in the longitudinal direction of the developing roller. It is equal.
【０００６】[0006]
次に、図面に基いて本考案の実施例を説明する。 図１は本考案に係る現像装置のスクレーパの一実施例を適用した現像装置の斜 視図である。図はトナーを現像剤収容部２０内に供給するトナーカートリッジを 外した状態で後方側から見た斜視図であり、トナーカートリッジによるトナー供 給開口１１を介して現像剤収容部２０内を覗いた状態を示したものである。 図示現像装置は、ハウジング１０によって容器状の現像剤収容部２０が形成さ れ、その上方はトナー供給開口１１として開放されると共に、現像剤収容部２０ の長手方向壁面の一方にその長手方向に沿って現像ローラにトナーを供給するト ナー供給口１２が開口形成され、該トナー供給口１２の向こう側に図示角度から は見えないが現像ローラが配置されている。 Next, embodiments of the present invention will be described based on the drawings. FIG. 1 shows an oblique view of a developing device to which an embodiment of the scraper of the developing device according to the present invention is applied. This is a perspective view. The figure shows a toner cartridge that supplies toner into the developer storage section 20. This is a perspective view seen from the rear with the toner cartridge removed. The inside of the developer storage section 20 is shown through the supply opening 11. In the illustrated developing device, a container-shaped developer storage portion 20 is formed by a housing 10. The upper part thereof is opened as the toner supply opening 11, and the developer storage part 20 is opened. A tray for supplying toner to the developing roller runs along the length of one of the longitudinal walls. A toner supply port 12 is formed as an opening, and the toner supply port 12 is opened from the angle shown on the other side of the toner supply port 12. Although you cannot see it, the developing roller is located there.
【０００７】 トナー供給開口１１には、図示しないトナーカートリッジが着脱可能に装着さ れ、該トナーカートリッジからトナーが現像剤収容部２０内に供給されるように なっている。 現像ローラは、その両端で現像剤収容部２０を構成するハウジング１０の側壁 １３，１３によって回転可能に支持されると共に、その一方の側壁１３より外面 側に突出するシャフト４０に固定されたギア４１が、側壁１３の外面側に設けら れたギア列５０と噛合関係にあり、該ギア列５０を介して伝達される回転力によ って所定回転数で回転駆動されるようになっている。 現像剤収容部２０内には、スクレーパ３０が、その長手方向に沿って内設され ている。[0007] A toner cartridge (not shown) is removably installed in the toner supply opening 11. so that toner is supplied into the developer storage section 20 from the toner cartridge. It has become. The developing roller has both ends attached to side walls of the housing 10 that constitute the developer storage section 20. 13, 13, and is rotatably supported by A gear 41 fixed to a shaft 40 projecting to the side is provided on the outer surface side of the side wall 13. The rotational force transmitted through the gear train 50 is in a meshing relationship with the gear train 50. It is designed to be rotated at a predetermined rotation speed. A scraper 30 is installed inside the developer storage section 20 along its longitudinal direction. ing.
【０００８】 スクレーパ３０は、その分解斜視図である図２に示す如く、複数の単位ブロッ ク３０Ａ…を、その軸部３１を駆動軸３０Ｂに外挿して直列に連結して構成され ている。 単位ブロック３０Ａは、所定長さの円筒状の軸部３１の両端部近傍から、所定 厚さアーム３２，３３が、該軸部３１の互いに１８０度反対側の外周面に接する 平面を外面とする状態で左右方向（軸部３１の略径方向）に延設されると共に、 該アーム３２，３３の先端は図中矢印で示す当該スクレーパ３０の回転方向とは 逆側に僅かに屈折され、この両アーム３２，３３の左右の先端部間が平板状のブ レード３４，３４で連結されて形成されている。つまり、ブレード３４，３４は 、軸部３１の中心線に対して所定の角度を有しその中心線と長手方向略中央で交 差する平面に沿って形成されているものである。 軸部３１の一方の端部には所定幅のスリット３１Ａが径方向に形成され、他方 の端部には該スリット３１Ａに嵌合可能な幅且つ長さの嵌合突起３１Ｂが、スリ ット３１Ａと直交する状態（即ち９０度回転した状態）で突設されている。[0008] As shown in FIG. 2, which is an exploded perspective view, the scraper 30 has a plurality of unit blocks. The drive shaft 30A... is constructed by extrapolating its shaft portion 31 to the drive shaft 30B and connecting them in series. ing. The unit block 30A extends from the vicinity of both ends of the cylindrical shaft portion 31 of a predetermined length to a predetermined length. The thickness arms 32 and 33 touch the outer peripheral surfaces of the shaft portion 31 on opposite sides of 180 degrees. Extending in the left-right direction (approximately in the radial direction of the shaft portion 31) with a flat surface as the outer surface, The tips of the arms 32 and 33 are aligned with the direction of rotation of the scraper 30 indicated by the arrow in the figure. It is slightly bent to the opposite side, and there is a flat plate-shaped block between the left and right tips of both arms 32 and 33. They are formed by being connected by leads 34, 34. In other words, the blades 34, 34 are , has a predetermined angle with respect to the center line of the shaft portion 31 and intersects the center line approximately at the center in the longitudinal direction. It is formed along the plane that points. A slit 31A of a predetermined width is formed in one end of the shaft portion 31 in the radial direction, and the other end is formed with a slit 31A having a predetermined width. A fitting protrusion 31B having a width and length that can be fitted into the slit 31A is provided at the end of the slit. It protrudes in a state perpendicular to the cut 31A (that is, in a state rotated 90 degrees).
【０００９】 そして、上記の如く形成された複数の単位ブロック３０Ａは、その軸部３１が 駆動軸３０Ｂに外挿されると共に、その一方端の嵌合突起３１Ｂが隣接する単位 ブロック３０Ａのスリット３１Ａに嵌合し、これによって隣接する単位ブロック ３０Ａのブレード３４が互いに９０度位相がずれた状態で相対回転不能に連結一 体化され、一つのスクレーパ３０を構成している。 又、末端の単位ブロック３０Ａは、図２にその一端部のみ示す如く、嵌合突起 ３１Ｂ又はスリット３１Ａから露出する駆動軸３０Ｂに打込まれたピン３０Ｃに より、駆動軸３０Ｂと相対回転不能となり、駆動軸３０Ｂに回転に伴なって回転 駆動されるようになっている。 駆動軸３０Ｂは、ハウジング１０の両側の側壁１３，１３によって回転可能に 支持されると共に、その一方の側壁１３より外面側への突出部位に固定されたギ ア３０Ｄが、前述の現像ローラを回転駆動するのと同じギア列５０と噛合関係に あり、該ギア列５０を介して伝達される回転力によって所定回転数で回転駆動さ れるようになっている。 尚、現像剤収容部２０の底部は、スクレーパ３０のブレード３４の先端と近接 するその回転軌跡に沿った円弧状に形成されているものである。[0009] The plurality of unit blocks 30A formed as described above have their shaft portions 31 A unit that is fitted onto the drive shaft 30B and has a fitting protrusion 31B at one end adjacent to the drive shaft 30B. It fits into the slit 31A of the block 30A, and thereby the adjacent unit block The blades 34 of 30A are connected to each other so that they cannot rotate relative to each other with a phase shift of 90 degrees. The scraper 30 is integrated into one scraper 30. Further, the unit block 30A at the end has a fitting protrusion, as only one end thereof is shown in FIG. 31B or the pin 30C driven into the drive shaft 30B exposed from the slit 31A. Therefore, it becomes impossible to rotate relative to the drive shaft 30B, and the drive shaft 30B rotates with the rotation. It is designed to be driven. The drive shaft 30B is rotatable by the side walls 13, 13 on both sides of the housing 10. A gear is supported and fixed to a portion protruding outward from one side wall 13. A 30D is in mesh with the same gear train 50 that rotationally drives the aforementioned developing roller. It is rotated at a predetermined rotational speed by the rotational force transmitted through the gear train 50. It is now possible to Note that the bottom of the developer storage section 20 is close to the tip of the blade 34 of the scraper 30. It is formed in an arc shape along the rotation locus.
【００１０】 而して、上記の如く構成されたスクレーパ３０は、図示しない回転駆動源から ギア列５０を介した駆動軸３０Ｂの回転によって回転駆動され、現像剤収容部２ ０内の現像剤をそのブレード３４で掻いてトナー供給口１２から現像ローラに供 給すると共に、現像剤の凝固団塊化を防止する。 ここで、単位ブロック３０Ａのブレード３４は、前述の如く軸部３１の中心線 に対して斜めに形成されており、これにより当該ブレード３４によって掻かれる 現像剤は、回転軸（軸部３１）の径方向（放射方向）でなくブレード３４に沿っ て斜め側方に移動することとなり、然も、この移動方向は、同じ単位ブロック３ ０Ａでもその対象位置にあるブレード３４，３４同士で互いに逆方向となる。つ まり、図３の状態からスクレーパ３０が９０度回転した状態である図４に矢印で 示す如く、特定の単位ブロック３０Ａと対応する位置にある現像剤はその単位ブ ロック３０Ａの一方のブレード３４によって一方方向に移動されると共に、該単 位ブロック３０Ａが半回転（１８０度回転）すると他方のブレード３４によって それとは逆方向に移動されることとなり、現像剤は左右交互に僅かづつ移動され ることとなる。これにより、現像剤収容部２０内の長手方向で現像剤の不均一が 生じた場合には、現像剤が多い部位から少ない部位に僅かづつ移動し、現像剤収 容部２０内の長手方向に於る現像剤の偏在が解消されるものである。 尚、上記実施例では、別個に形成した単位ブロック３０Ａを直列に連結してス クレーパ３０を構成したが、一体形成としても良く、又、ブレードの形状も適宜 変更可能なものである。0010 The scraper 30 configured as described above is powered by a rotational drive source (not shown). Rotationally driven by the rotation of the drive shaft 30B via the gear train 50, the developer storage section 2 0 is scraped with the blade 34 and supplied to the developing roller from the toner supply port 12. At the same time, it prevents the developer from coagulating into lumps. Here, the blade 34 of the unit block 30A is connected to the center line of the shaft portion 31 as described above. The blade 34 is formed obliquely to the blade 34. The developer is applied along the blade 34, not in the radial direction of the rotating shaft (shaft portion 31). However, this direction of movement is similar to that of the same unit block 3. Even at 0A, the blades 34, 34 at the target position are in opposite directions. One 4, which shows the state in which the scraper 30 has been rotated 90 degrees from the state shown in FIG. As shown, the developer at the position corresponding to a specific unit block 30A is is moved in one direction by one blade 34 of lock 30A, and When the position block 30A rotates half a turn (180 degrees), the other blade 34 The developer is moved in the opposite direction, and the developer is moved little by little alternately from side to side. The Rukoto. This prevents unevenness of the developer in the longitudinal direction within the developer storage section 20. If this happens, the developer will move slightly from the area with more developer to the area with less developer, and the developer will be collected. This eliminates uneven distribution of developer in the longitudinal direction within the container 20. Incidentally, in the above embodiment, separately formed unit blocks 30A are connected in series. Although the creper 30 is constructed, it may be formed integrally, and the shape of the blade may be changed as appropriate. It is changeable.
【００１１】[0011]
以上述べたように、本考案に係る現像装置のスクレーパによれば、現像剤収容 部内の現像剤は左右交互に僅かづつ移動され、現像剤収容部内の長手方向に於で 現像剤の不均一が生じた場合には、現像剤は多い部位から少ない部位に移動して 現像剤収容部内の長手方向に於る偏在が解消されるものである。その結果、現像 剤の残量が現像剤収容部内の長手方向に於て均一となることから合理的なトナー 供給が可能となり、現像剤収容部の容積利用効率が向上するものである。又、ト ナーセンサの配置の自由度も向上するものである。 As described above, according to the scraper of the developing device according to the present invention, the developer can be accommodated. The developer in the developer container is moved little by little alternating left and right, and is placed in the longitudinal direction of the developer container. If the developer is uneven, the developer moves from an area with more to an area with less. This eliminates uneven distribution in the longitudinal direction within the developer storage section. As a result, development The amount of toner remaining is uniform in the longitudinal direction of the developer storage area, making it a reasonable toner solution. This makes it possible to supply the developer and improve the volume utilization efficiency of the developer storage section. Also, The degree of freedom in arranging the sensor sensor is also improved.
【図１】本考案に係る現像装置のスクレーパ構造を適用
した現像装置の斜視図。FIG. 1 is a perspective view of a developing device to which a developing device scraper structure according to the present invention is applied.
【図２】スクレーパの分解斜視図。FIG. 2 is an exploded perspective view of the scraper.
【図３】スクレーパの作用説明図。FIG. 3 is an explanatory diagram of the action of the scraper.
【図４】図３の状態からスクレーパが９０度回転した状
態を示す図。FIG. 4 is a diagram showing a state in which the scraper has been rotated 90 degrees from the state in FIG. 3;
２０…現像剤収容部 ３０…スクレーパ ３０Ａ…単位ブロック ３１…軸部 ３４…ブレード 20...Developer storage section 30...Scraper 30A...Unit block 31...Shaft part 34...Blade
Claims (1)
内に設けられ、回転駆動されて前記現像剤収容部内のト
ナーを現像ローラに供給するものであって、軸部に、そ
の長手方向中心線に対して所定の角度を有し該中心線と
その長手方向略中央で交差する平面に沿うブレードが左
右対象に形成された単位ブロックが、前記ブレードの位
相を９０度づつずらした状態で前記軸方向に複数並設さ
れていること、を特徴とする現像装置のスクレーパ。1. A device that is provided in a developer storage section of a developing device in electrophotography, and is rotationally driven to supply the toner in the developer storage section to a developing roller, the shaft portion having a shaft along its longitudinal direction. A unit block in which blades are formed symmetrically along a plane that has a predetermined angle with respect to the direction center line and intersects the center line at approximately the center in the longitudinal direction, and the phase of the blades is shifted by 90 degrees. A scraper of a developing device, characterized in that a plurality of scrapers are arranged in parallel in the axial direction.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991073722U JPH04135761U (en) | 1991-06-07 | 1991-06-07 | Developing device scraper |
| DE4218677A DE4218677A1 (en) | 1991-06-07 | 1992-06-05 | Photocopier toner scraper - has offset blades on powered shaft parallel to developer roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991073722U JPH04135761U (en) | 1991-06-07 | 1991-06-07 | Developing device scraper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04135761U true JPH04135761U (en) | 1992-12-17 |
Family
ID=13526403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991073722U Pending JPH04135761U (en) | 1991-06-07 | 1991-06-07 | Developing device scraper |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH04135761U (en) |
| DE (1) | DE4218677A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001109244A (en) * | 1999-10-04 | 2001-04-20 | Katsuragawa Electric Co Ltd | Developing device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3009471C2 (en) * | 1979-03-15 | 1982-04-29 | Tokyo Shibaura Denki K.K., Kawasaki, Kanagawa | Developer transport device for electrostatic copiers |
| DE4035745A1 (en) * | 1989-11-10 | 1991-05-29 | Asahi Optical Co Ltd | Toner mixer arm |
-
1991
- 1991-06-07 JP JP1991073722U patent/JPH04135761U/en active Pending
-
1992
- 1992-06-05 DE DE4218677A patent/DE4218677A1/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001109244A (en) * | 1999-10-04 | 2001-04-20 | Katsuragawa Electric Co Ltd | Developing device |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4218677A1 (en) | 1993-01-07 |
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