JPH0311252U

JPH0311252U -

Info

Publication number: JPH0311252U
Application number: JP7191689U
Authority: JP
Priority date: 1989-06-19
Filing date: 1989-06-19
Publication date: 1991-02-04

Description

[Brief explanation of drawings]

第１図はこの考案による現像装置の正面断面図
、第２図は該現像装置の平面断面図、第３図は該
現像装置の現像剤循環搬送部の斜視図、第４図は
現像剤の投入と循環搬送の関係を示す現像装置の
略示的断面図、第５図は該現像装置の略示的側面
図、第６図は該現像装置の要部斜視図である。１……像担持体（感光体）、２……現像装置本
体（ケーシング）、２Ａ……仕切り壁、２Ｂ……
切欠部、４……現像スリーブ（現像剤担持体）、
６……主撹拌手段、７……第一搬送手段、８……
第二搬送手段、１０……飛び込み規制板、１１…
…トナー補給容器、１３……トナー補給ローラ、
１４……ホツパー、１６……仕切り板、７１……
受け皿部材、７１Ａ……現像剤落下孔、７１Ｂ…
…落下孔、７１Ｃ……仕切り壁部、７１Ｄ……障
壁部、７２……搬送スクリユー、７３……現像剤
投入口、８１……搬送スクリユー、Ｄ……現像剤
、Ｔ……補給新規トナー、Ｈ１，Ｈ２……仕切り
壁の高さ。 FIG. 1 is a front cross-sectional view of the developing device according to this invention, FIG. 2 is a plan cross-sectional view of the developing device, FIG. 3 is a perspective view of the developer circulation conveyance section of the developing device, and FIG. 4 is a cross-sectional view of the developer. FIG. 5 is a schematic side view of the developing device, and FIG. 6 is a perspective view of essential parts of the developing device. 1... Image carrier (photoreceptor), 2... Developing device main body (casing), 2A... Partition wall, 2B...
Notch, 4...Developing sleeve (developer carrier),
6... Main stirring means, 7... First conveying means, 8...
Second conveyance means, 10... Jumping regulation plate, 11...
...Toner supply container, 13...Toner supply roller,
14...hopper, 16...partition plate, 71...
Receiver member, 71A...Developer drop hole, 71B...
...Drop hole, 71C...Partition wall part, 71D...Barrier part, 72...Transport screw, 73...Developer inlet, 81...Transport screw, D...Developer, T...Replenish new toner, H1, H2... Height of partition wall.

Claims

[Scope of Claim for Utility Model Registration] (1) In a developing device in which a developer carrier is provided in close opposition to an image carrier and a developer is attached to an electrostatic latent image on the image carrier to make it visible, A main stirring means that stirs the developer in the developing device main body and supplies the developer to the developer carrier, a first conveyance means that conveys the developer in one direction with respect to the development width, and a conveyance direction of the first conveyance means. a second conveying means for conveying the developer in the opposite direction, a partition wall is provided on a side adjacent to the second conveying means and facing the main stirring means, and the height of the partition wall is 2. A developing device, characterized in that the second conveying means is provided at an angle with respect to the axial direction of the rotating shaft, and the downstream side of the developer conveying means is formed lower than the upstream side. (2) A developer carrying-out opening is provided in the upper part of the partition wall, and the width of the developer carrying-out opening on the upstream side of the developer carried by the rotation of the spiral screw of the second conveying means is narrowed, and the width of the developer carrying-out opening on the downstream side is narrowed. 2. The developing device according to claim 1, wherein the developing device has a wide width. (3) The developing device according to claim 1, wherein a portion of the partition wall near the downstream side in the developer conveying direction by the second conveying means is removed.