JP2542866Y2 - Developing device - Google Patents
Developing deviceInfo
- Publication number
- JP2542866Y2 JP2542866Y2 JP1989114775U JP11477589U JP2542866Y2 JP 2542866 Y2 JP2542866 Y2 JP 2542866Y2 JP 1989114775 U JP1989114775 U JP 1989114775U JP 11477589 U JP11477589 U JP 11477589U JP 2542866 Y2 JP2542866 Y2 JP 2542866Y2
- Authority
- JP
- Japan
- Prior art keywords
- developing
- developing device
- rollers
- magnet
- roller
- 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 - Lifetime
Links
Landscapes
- Dry Development In Electrophotography (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、筒状の回転可能な現像スリーブとこの現像
スリーブの内部に軸を有するマグネットローラとからな
る、複数の現像ローラを用いる現像装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a developing device using a plurality of developing rollers, which comprises a cylindrical rotatable developing sleeve and a magnet roller having a shaft inside the developing sleeve. About.
従来の現像装置を第４図および第５図により説明す
る。第４図において、感光体ドラム１に対し現像装置２
が付設されており、この現像装置には感光体ドラム１に
近接して２個の現像ローラ3,4が回転可能に設けられて
いる。各現像ローラ3,4は、第５図に示すように、現像
側板５にそれぞれの軸受7,8を介して保持されている。
現像ローラ3,4内にはマグネットローラ9,10が固定して
配置される。A conventional developing device will be described with reference to FIGS. In FIG. 4, a developing device 2 is
The developing device is provided with two developing rollers 3 and 4 rotatably in proximity to the photosensitive drum 1. As shown in FIG. 5, the developing rollers 3 and 4 are held on the developing side plate 5 via bearings 7 and 8, respectively.
Magnet rollers 9 and 10 are fixedly arranged in the developing rollers 3 and 4, respectively.
上述せる従来の現像装置においては、マグネットロー
ラの感光体ドラムに対する主極角度の設定は、それぞれ
の部材で行っており、このように複数の部材を用いるこ
とにより、位置合せの精度上問題が生じている。本考案
は、この問題を解決することを課題とする。In the conventional developing device described above, the setting of the main pole angle of the magnet roller with respect to the photosensitive drum is performed by each member, and using such a plurality of members causes a problem in alignment accuracy. ing. An object of the present invention is to solve this problem.
上記の課題は、本考案により、各マグネットローラ軸
が回転しないように各軸を支持する１体の軸受部材を現
像装置の側板に取付け、各マグネットローラの角度位置
決めを行うことにより解決される。According to the present invention, the above problems can be solved by mounting a single bearing member for supporting each shaft on the side plate of the developing device so as not to rotate each magnet roller shaft, and performing angular positioning of each magnet roller.
第１図ないし第３図において、第４図および第５図に
示す各部材と同一のものには同じ符号を付している。1 to 3, the same members as those shown in FIGS. 4 and 5 are denoted by the same reference numerals.
第１図において、各現像ローラ3,4は単一の軸受部材1
1により現像側板５に支持されており、その詳細を第２
図にて説明する。12は、現像剤収容室内の撹拌ローラで
ある。In FIG. 1, each developing roller 3 and 4 has a single bearing member 1.
1 is supported by the development side plate 5,
This will be described with reference to the drawings. Reference numeral 12 denotes a stirring roller in the developer accommodating chamber.
第２図において、現像ローラ3,4の内部にそれぞれマ
グネットローラ9,10が装着されており、各マグネットロ
ーラの軸9a,10aが軸受部材11の軸受穴11a,11bに挿入さ
れている。各軸9a,10aの挿入端に平坦部を設け、これが
軸受穴11a,11bの対応する平坦部に係合することによ
り、各軸9a,10a従って各マグネットローラ9,10は現像側
板５に対し固定の関係にある。In FIG. 2, magnet rollers 9 and 10 are mounted inside developing rollers 3 and 4, respectively, and shafts 9a and 10a of the respective magnet rollers are inserted into bearing holes 11a and 11b of bearing member 11, respectively. A flat portion is provided at the insertion end of each shaft 9a, 10a, and this engages with the corresponding flat portion of the bearing hole 11a, 11b. There is a fixed relationship.
各現像ローラ3,4は、図の左側にて各軸9a,10aに軸受1
3,14を介して回転可能に支持されている。第２図の右側
にて、各現像ローラ3,4の軸3a,4aはこちら側の現像側板
15に軸受16,17を介して回転可能に支持され、更に現像
側板15の外方にて歯車18,19と固定結合されている。歯
車18,19は互いに噛合い、図示しない駆動部により回転
駆動される。20はパッキンである。Each developing roller 3, 4 has a bearing 1 on each shaft 9a, 10a on the left side of the figure.
It is rotatably supported via 3,14. On the right side of FIG. 2, the shafts 3a and 4a of the developing rollers 3 and 4 are located on the developing side plate on this side.
15 is rotatably supported via bearings 16 and 17, and is fixedly connected to gears 18 and 19 outside the developing side plate 15. The gears 18 and 19 mesh with each other and are rotationally driven by a drive unit (not shown). 20 is a packing.
各マグネットローラ9,10の右端短軸9b,10bは、各現像
ローラ3,4の右側端板3b,4bに軸受21,22を介して支持さ
れている。従って、図示しない駆動部より歯車18,19が
回転駆動されるとき、マグネットローラ9,10は回転しな
いが、このマグネットローラの軸に軸受13,14および21,
22にて装着されている現像ローラ3,4は回転せしめられ
る。The right end short shafts 9b, 10b of the magnet rollers 9, 10 are supported by the right end plates 3b, 4b of the developing rollers 3, 4 via bearings 21, 22. Accordingly, when the gears 18 and 19 are rotationally driven by a driving unit (not shown), the magnet rollers 9 and 10 do not rotate, but the bearings 13, 14, and 21,
The developing rollers 3 and 4 mounted at 22 are rotated.
第３図において、各現像ローラのマグネットローラ9,
10における各主極23,24は、感光体ドラム１に対しそれ
ぞれ所定の角度θ1,θ２でセットされる。第２図に関し
て述べたように、両マグネットローラ9,10の軸9a,10aの
軸端に平坦部を設け、軸受部材11の軸受穴11a,11bの対
応する平坦部との係合により軸受部材11に対する軸9a,1
0aの角度位置、従ってマグネットローラおよび主極の角
度位置を設定することが出来る。軸受部材11は、現像側
板に対し正確な位置づけをもって取付けることが出来
る。よって、軸受部材11を現像側板５に取付け、この現
像側板にマグネットローラの軸9a,10aを挿着して取付け
ることにより、感光体ドラム１に対する主極の所定角度
θ1,θ２を正確に出すことが出来る。In FIG. 3, the magnet roller 9 of each developing roller,
The main poles 23 and 24 in 10 are set at predetermined angles θ 1 and θ 2 with respect to the photosensitive drum 1, respectively. As described with reference to FIG. 2, flat portions are provided at the shaft ends of the shafts 9a, 10a of the two magnet rollers 9, 10, and the bearing members 11 are engaged with the corresponding flat portions of the bearing holes 11a, 11b. Axis 9a, 1 for 11
The angle position of 0a, that is, the angle position of the magnet roller and the main pole can be set. The bearing member 11 can be attached to the developing side plate with an accurate position. Therefore, by attaching the bearing member 11 to the developing side plate 5 and inserting and attaching the shafts 9a and 10a of the magnet roller to the developing side plate, the predetermined angles θ 1 and θ 2 of the main pole with respect to the photosensitive drum 1 can be accurately determined. You can get out.
本考案の構成により、感光体に対する各マグネットロ
ーラの角度位置決めを同時に、簡単にかつ正確に設定す
ることができ、さらにマグネットローラ同志の相対角度
や間隔をも簡単にかつ正確に設定することができる。According to the configuration of the present invention, the angular positioning of each magnet roller with respect to the photoconductor can be easily and accurately set at the same time, and the relative angle and interval between the magnet rollers can also be easily and accurately set. .
第１図は本考案による現像装置の主要部の正面図、第２
図は同装置の現像ローラを示す断面図にして現像ローラ
の１部を破断して示し、第３図は現像ローラを横断面に
て示す第１図と同様の正面図、第４図および第５図は２
個の現像ローラを有する従来の現像装置の１部の正面図
と断面図である。 ２……現像装置 3,4……現像ローラ ５……現像側板 9,10……マグネットローラ 11……軸受部材 23,24……主極FIG. 1 is a front view of a main part of a developing device according to the present invention, FIG.
FIG. 3 is a cross-sectional view showing the developing roller of the apparatus and a part of the developing roller is cut away, and FIG. 3 is a front view similar to FIG. 1, FIG. 5 is 2
FIG. 2 is a front view and a cross-sectional view of a part of a conventional developing device having a plurality of developing rollers. 2 Developing device 3, 4 Developing roller 5 Developing side plate 9, 10 Magnet roller 11 Bearing member 23, 24 Main pole
Claims (1)
スリーブの内部に軸を有するマグネットローラとからな
る、複数の現像ローラを用いる現像装置において、上記
の各マグネットローラ軸が回転しないように各軸を支持
する１体の軸受部材を現像装置の側板に取付け、各マグ
ネットローラの角度位置決めを行うことを特徴とする現
像装置。In a developing device using a plurality of developing rollers, comprising a cylindrical rotatable developing sleeve and a magnet roller having a shaft inside the developing sleeve, each of the magnet roller shafts is prevented from rotating. A developing device, wherein one bearing member for supporting each shaft is attached to a side plate of the developing device, and each magnet roller is positioned at an angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989114775U JP2542866Y2 (en) | 1989-10-02 | 1989-10-02 | Developing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989114775U JP2542866Y2 (en) | 1989-10-02 | 1989-10-02 | Developing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0354956U JPH0354956U (en) | 1991-05-28 |
| JP2542866Y2 true JP2542866Y2 (en) | 1997-07-30 |
Family
ID=31663124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989114775U Expired - Lifetime JP2542866Y2 (en) | 1989-10-02 | 1989-10-02 | Developing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2542866Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5183712B2 (en) * | 2010-10-25 | 2013-04-17 | キヤノン株式会社 | Developing device and image forming apparatus |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58108564A (en) * | 1981-12-23 | 1983-06-28 | Fuji Xerox Co Ltd | Developing device |
| GB8315726D0 (en) * | 1983-06-08 | 1983-07-13 | Xerox Corp | Electrostatographic development apparatus |
| US4679527A (en) * | 1985-12-27 | 1987-07-14 | International Business Machines Corporation | Magnetic brush developer |
-
1989
- 1989-10-02 JP JP1989114775U patent/JP2542866Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0354956U (en) | 1991-05-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |