JPS6333165U

JPS6333165U -

Info

Publication number: JPS6333165U
Application number: JP12683986U
Authority: JP
Priority date: 1986-08-20
Filing date: 1986-08-20
Publication date: 1988-03-03

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例における現像装置を
表わした縦断面図、第２図は第１図で示したパド
ルローラの正面図、第３図は本考案の他の実施例
における現像装置を表わした縦断面図、第４図は
第３図で示したパドルローラの拡大断面図、第５
図はパドルローラの他例を表わした斜視図、第６
図および第７図はパドルローラのさらに他例を表
わした縦断面図、第８図および第９図は本考案の
他の実施例における現像装置を表わした縦断面図
および平面断面図、第１０図および第１１図は本
考案のさらに他の実施例における現像装置を表わ
した縦断面図および正面断面図、第１２図は一般
の現像装置を示した縦断面図である。１…現像タンク、２，２１，３１，４１…パド
ルローラ、６…現像ローラ、１０…感光体ドラム
、２２…穴部、２３…バケツト、２５，３５…リ
ブ、３２，４２…回転円筒体、３３，４３…現像
剤取入部、３４，４４…現像剤排出部、５１…回
転円筒状容器、５４…搬送フイン、５５…スクレ
ーパ、５６…分配フイン。 FIG. 1 is a longitudinal sectional view showing a developing device in one embodiment of the present invention, FIG. 2 is a front view of the paddle roller shown in FIG. 1, and FIG. 3 is a developing device in another embodiment of the present invention. FIG. 4 is an enlarged sectional view of the paddle roller shown in FIG. 3, and FIG.
The figure is a perspective view showing another example of the paddle roller.
7 and 7 are longitudinal sectional views showing still another example of the paddle roller, FIGS. 8 and 9 are longitudinal sectional views and plan sectional views showing a developing device in another embodiment of the present invention, and FIG. 11 are a longitudinal sectional view and a front sectional view showing a developing device according to still another embodiment of the present invention, and FIG. 12 is a longitudinal sectional view showing a general developing device. 1... Developing tank, 2, 21, 31, 41... Paddle roller, 6... Developing roller, 10... Photosensitive drum, 22... Hole, 23... Bucket, 25, 35... Rib, 32, 42... Rotating cylindrical body, 33, 43... Developer intake section, 34, 44... Developer discharge section, 51... Rotating cylindrical container, 54... Conveyance fin, 55... Scraper, 56... Distribution fin.

Claims

[Claims for Utility Model Registration] 1. In a stirring mechanism of a developing device provided to stir a developer for developing an electrostatic latent image formed on a latent image carrier, the stirring mechanism An agitation mechanism for a developing device, characterized in that it is provided with an agitation promotion structure that promotes agitation. 2. The agitation promoting structure is provided on the paddle roller that supplies the developer to the developer carrier, and the agitation promoting structure is located in the middle of each of the many ribs extending radially from the rotating shaft of the paddle roller. Utility model registration claim 1, characterized in that it is provided with a plurality of developer mixing holes formed through the ribs, and a developer conveying bucket provided at the tip of each of the ribs. Stirring mechanism of the developing device described in Section 1. 3 The developer mixing hole formed in each rib is
The stirring mechanism for a developing device according to claim 2, wherein the ribs are provided so as to be offset from each other in the axial direction. 4. The agitation promoting structure is provided on a paddle roller that supplies the developer to the developer carrier, and the agitation promoting structure is a hollow rotating structure with a predetermined agitation space in the rotational center region of the paddle roller. It is characterized by comprising a cylindrical body, a developer intake part that guides the developer into the internal space of the rotating cylindrical body, and a developer discharge part that discharges the developer stored inside the rotary cylindrical body to the outside. A stirring mechanism for a developing device according to claim 1 of the utility model registration claim. 5. The developer intake section and the developer discharge section are formed by ribs extending radially from the rotating cylindrical body.
The developer intake section is formed in the shape of a passage defined to connect the interior space and the exterior space of the rotating cylindrical body, and the developer intake section is formed in the shape of a passage that gradually expands toward the outside in the radial direction, and the developer is discharged. 5. The agitation mechanism for a developing device according to claim 4, wherein the portion is formed in the shape of a passage that gradually narrows toward the outside in the radial direction. 6. The agitation promoting structure is formed of a rotating agitating layer installed behind the paddle roller that supplies developer to the developer carrier, and a developer introduction section that introduces the developer into the rotating agitating layer. , the above-mentioned rotating agitation layer is provided with an agitation conveyance section that rotates and agitates the developer in the layer and sends it out to the paddle roller side.
Stirring mechanism of the developing device described in Section 1. 7 The rotating stirring layer has a cylindrical container rotatably attached to the rear end of the developing tank, and the developer introduction section is formed from a scraper that receives the toner after development and guides it into the rotating stirring layer. On the inner wall of the cylindrical container, transport fins serving as an agitation transport section are installed in a spiral manner so as to send the developer in the layer to the paddle roller side, and the opening of the cylindrical container is Utility model registration claim No. 1 is characterized in that a distribution fin is installed as an agitation conveyance section that distributes the developer sent out from the cylindrical container almost uniformly in the axial direction of the paddle roller. The stirring mechanism of the developing device according to item 6.