JPS6241326Y2 - - Google Patents
Info
- Publication number
- JPS6241326Y2 JPS6241326Y2 JP2604280U JP2604280U JPS6241326Y2 JP S6241326 Y2 JPS6241326 Y2 JP S6241326Y2 JP 2604280 U JP2604280 U JP 2604280U JP 2604280 U JP2604280 U JP 2604280U JP S6241326 Y2 JPS6241326 Y2 JP S6241326Y2
- Authority
- JP
- Japan
- Prior art keywords
- toner
- toner supply
- supply roller
- scraping member
- contact
- 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
Links
- 238000007790 scraping Methods 0.000 claims description 11
- 238000013019 agitation Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Dry Development In Electrophotography (AREA)
- Magnetic Brush Developing In Electrophotography (AREA)
Description
【考案の詳細な説明】
本考案は、静電転写式の電子写真複写機におい
て、トナーホツパー内のトナーを、トナー供給ロ
ーラにて現像部に供給するに際して、トナー供給
量を容易に調整可能にしたトナー供給装置を提供
するものである。[Detailed description of the invention] This invention makes it possible to easily adjust the amount of toner supplied when the toner in the toner hopper is supplied to the developing section by the toner supply roller in an electrostatic transfer type electrophotographic copying machine. A toner supply device is provided.
以下、本考案を図示の実施例に基いて説明す
る。第１図において、１は磁気ブラシ式現像装置
で、内部にマグネツトロール（図示せず）を有す
る現像スリーブ２とトナーを撹拌するアジテーシ
ヨンバー３を備え、感光ドラム４に対向して配設
されている。前記現像装置１は上部にトナーホツ
パー５が着脱可能に設けられており、該トナーホ
ツパー５の底部には、表面がスポンジ等のトナー
搬送に適した部材で被覆されたトナー供給ローラ
６と、該トナー供給ローラ６の外周に一部が当接
しうるように軸心を支軸８に対して偏心させたト
ナー掻落し部材７が設けられている。 Hereinafter, the present invention will be explained based on the illustrated embodiments. In FIG. 1, reference numeral 1 denotes a magnetic brush type developing device, which is equipped with a developing sleeve 2 having a magnet roll (not shown) inside and an agitation bar 3 for stirring toner, and is arranged opposite to a photosensitive drum 4. It is set up. The developing device 1 has a toner hopper 5 removably installed at the top thereof, and a toner supply roller 6 whose surface is covered with a member suitable for toner conveyance, such as a sponge, at the bottom of the toner hopper 5. A toner scraping member 7 is provided, the axis of which is eccentric with respect to the support shaft 8 so that a portion thereof can come into contact with the outer periphery of the roller 6.
そして、トナー供給ローラ６の全長に亘つて前
記トナー掻落し部材７の一部を適当な圧接力にて
当接させた状態で固定し、現像装置１の内部への
トナー供給量を一定に保つように構成している。
なお、濃度に変化を与える場合は上記支軸８を外
部より回動させてトナー掻落し部材７のトナー供
給ローラ６に対する当接量を変化させて再び固定
させればトナーの落下量すなわち、現像装置１へ
のトナーの供給量を微調に変えることができるこ
とはいうまでもない。 Then, a part of the toner scraping member 7 is fixed in contact with the entire length of the toner supply roller 6 with an appropriate pressure contact force, and the amount of toner supplied to the inside of the developing device 1 is kept constant. It is configured as follows.
In addition, when changing the density, by rotating the above-mentioned support shaft 8 from the outside to change the amount of contact of the toner scraping member 7 with the toner supply roller 6 and then fixing it again, the amount of toner falling, that is, the amount of toner falling, that is, the developing It goes without saying that the amount of toner supplied to the device 1 can be finely changed.
第２図および第３図はトナー掻落し部材の他の
例を示す図で、第３図は、トナー掻落し部材７ａ
として、外周の一部を切欠した円形部材を使用し
た場合、第４図はトナー掻落し部材７ｂとして、
角の一部を切欠した角形部材を使用した場合であ
る。 2 and 3 are views showing other examples of the toner scraping member, and FIG. 3 shows the toner scraping member 7a.
When a circular member with a part of the outer periphery cut out is used as the toner scraping member 7b, FIG.
This is a case where a square member with a part of the corner cut out is used.
以上の説明から明らかなように本考案は、トナ
ー供給ローラに一部が当接する回動可能なトナー
掻落し部材を設けるとともに、その軸心を偏心さ
せることにより、均一なトナー供給が出来ると共
に、その接触圧を適当に調整可能にすることによ
り、トナー落下量を簡単に調整することができる
といつた数々のすぐれた特長を有するものであ
る。 As is clear from the above description, the present invention provides a rotatable toner scraping member that partially contacts the toner supply roller, and by making the axis eccentric, it is possible to supply uniform toner. It has a number of excellent features such as being able to easily adjust the amount of toner falling by making the contact pressure appropriately adjustable.
第１図は本考案の一実施例の要部側断面図、第
２図および第３図は本考案で使用し得るトナー掻
落し部材の他の例を示す要部断面図である。
１……現像装置、２……現像スリーブ、４……
感光ドラム、５……トナーホツパー、６……トナ
ー供給ローラ、７，７ａ，７ｂ……トナー掻落し
部材、８……支軸。
FIG. 1 is a sectional side view of a main part of an embodiment of the present invention, and FIGS. 2 and 3 are sectional views of main parts showing other examples of toner scraping members that can be used in the present invention. 1...Developing device, 2...Developing sleeve, 4...
Photosensitive drum, 5... Toner hopper, 6... Toner supply roller, 7, 7a, 7b... Toner scraping member, 8... Support shaft.
Claims (1)
ローラと、該トナー供給ローラに一部が当接する
回動可能なトナー掻落し部材を設けると共に、前
記トナー掻落し部材の軸心を偏心させてその回動
によりトナー供給ローラへの当接量を調整できる
ように構成したことを特徴とする電子写真複写機
のトナー供給装置。 A toner supply roller and a rotatable toner scraping member that is partially in contact with the toner supply roller are provided in the toner hopper following the developing section, and the axis of the toner scraping member is made eccentric to allow its rotation. 1. A toner supply device for an electrophotographic copying machine, characterized in that the toner supply device for an electrophotographic copying machine is configured to be able to adjust the amount of contact with a toner supply roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2604280U JPS6241326Y2 (en) | 1980-02-28 | 1980-02-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2604280U JPS6241326Y2 (en) | 1980-02-28 | 1980-02-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56128658U JPS56128658U (en) | 1981-09-30 |
| JPS6241326Y2 true JPS6241326Y2 (en) | 1987-10-22 |
Family
ID=29622059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2604280U Expired JPS6241326Y2 (en) | 1980-02-28 | 1980-02-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6241326Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2613413B2 (en) * | 1988-02-03 | 1997-05-28 | 富士通株式会社 | Toner hopper blocking prevention mechanism |
-
1980
- 1980-02-28 JP JP2604280U patent/JPS6241326Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56128658U (en) | 1981-09-30 |
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