JPH0197357U - - Google Patents
Info
- Publication number
- JPH0197357U JPH0197357U JP19432987U JP19432987U JPH0197357U JP H0197357 U JPH0197357 U JP H0197357U JP 19432987 U JP19432987 U JP 19432987U JP 19432987 U JP19432987 U JP 19432987U JP H0197357 U JPH0197357 U JP H0197357U
- Authority
- JP
- Japan
- Prior art keywords
- toner
- opening
- box
- roller
- bottom wall
- 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
- 239000013013 elastic material Substances 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
Landscapes
- Dry Development In Electrophotography (AREA)
Description
第１図乃至第３図は本考案の一実施例を示すも
のであつて、第１図はトナー搬送ユニツトの開口
部の形状とこの開口部からのトナーの落下量との
関係を示す説明図、第２図はトナーホツパーの説
明斜視図、第３図はトナー搬送ユニツトの内部構
造を示す縦断面正面図、第４図乃至第７図は従来
例を示すものであつて、第４図はトナーホツパー
の縦断面図、第５図はトナー搬送ユニツトの下部
の構造を示す概略の縦断面図、第６図は開口部へ
のトナー補給ローラの食い込み量とトナー落下量
との関係を示すグラフ、第７図はトナー搬送ユニ
ツトの開口部の形状とこの開口部からのトナーの
落下量との関係を示す説明図である。
２１は現像槽、２２はトナーホツパー、２３は
トナーボツクス（トナー供給源）、２４はトナー
搬送ユニツト、２６は上箱部、２７は下箱部、２
９，３０はトナー搬送スクリユー、３１はトナー
補給ローラ、３２は開口部、３２ａは小穴、３２
ｂは長穴、３３は掻落し部である。
1 to 3 show an embodiment of the present invention, and FIG. 1 is an explanatory diagram showing the relationship between the shape of the opening of the toner transport unit and the amount of toner falling from this opening. , FIG. 2 is an explanatory perspective view of the toner hopper, FIG. 3 is a vertical cross-sectional front view showing the internal structure of the toner transport unit, and FIGS. 4 to 7 show conventional examples, and FIG. 4 shows the toner hopper. 5 is a schematic vertical sectional view showing the structure of the lower part of the toner transport unit. FIG. 6 is a graph showing the relationship between the amount of penetration of the toner supply roller into the opening and the amount of toner falling. FIG. 7 is an explanatory diagram showing the relationship between the shape of the opening of the toner transport unit and the amount of toner falling from the opening. 21 is a developer tank, 22 is a toner hopper, 23 is a toner box (toner supply source), 24 is a toner transport unit, 26 is an upper box portion, 27 is a lower box portion, 2
9 and 30 are toner conveying screws, 31 is a toner supply roller, 32 is an opening, 32a is a small hole, 32
b is a long hole, and 33 is a scraping part.
Claims (1)
供給するトナー搬送ユニツトを備え、このトナー
搬送ユニツトの外郭を成す箱体の内部には、外周
部が多孔質の弾性体からなり均一の外径を有する
トナー補給ローラが、両端の軸部を箱体の側壁に
回転可能に支持されて設けられ、上記箱体の底壁
には、トナー補給ローラの長手方向にトナー補給
ローラに沿つて開口部が形成され、かつこの開口
部に外周部が食い込むように上記トナー補給ロー
ラが配され、トナー補給ローラの外周部に付着し
たトナーが上記開口部における箱体の底壁にて掻
き落とされることにより、トナーが開口部を通じ
て現像槽に供給されるトナーホツパーにおいて、 上記トナー搬送ユニツトの開口部は、開口部の
両端部における開口面積が中央部側の開口面積よ
りも小さく形成されていることを特徴とするトナ
ーホツパー。[Claims for Utility Model Registration] A toner conveyance unit that supplies toner supplied from a toner supply source to a developer tank is provided, and inside a box forming an outer shell of the toner conveyance unit, an outer peripheral portion is made of porous elastic material. A toner replenishing roller having a uniform outer diameter is provided with shaft portions at both ends rotatably supported by the side walls of the box, and a toner replenishing roller is provided on the bottom wall of the box in the longitudinal direction of the toner replenishing roller. An opening is formed along the replenishment roller, and the toner replenishment roller is disposed so that its outer circumference bites into the opening, and the toner adhering to the outer circumference of the toner replenishment roller is deposited on the bottom wall of the box at the opening. In the toner hopper, in which the toner is scraped off by the toner and supplied to the developer tank through the opening, the opening of the toner transport unit is formed such that the opening area at both ends of the opening is smaller than the opening area at the center. A toner hopper characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19432987U JPH0197357U (en) | 1987-12-21 | 1987-12-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19432987U JPH0197357U (en) | 1987-12-21 | 1987-12-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0197357U true JPH0197357U (en) | 1989-06-28 |
Family
ID=31485060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19432987U Pending JPH0197357U (en) | 1987-12-21 | 1987-12-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0197357U (en) |
-
1987
- 1987-12-21 JP JP19432987U patent/JPH0197357U/ja active Pending