JPH043445U - - Google Patents
Info
- Publication number
- JPH043445U JPH043445U JP4215190U JP4215190U JPH043445U JP H043445 U JPH043445 U JP H043445U JP 4215190 U JP4215190 U JP 4215190U JP 4215190 U JP4215190 U JP 4215190U JP H043445 U JPH043445 U JP H043445U
- Authority
- JP
- Japan
- Prior art keywords
- developer
- developing device
- developer carrier
- carrier
- spiral groove
- 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
Landscapes
- Dry Development In Electrophotography (AREA)
Description
第１図は接触式一成分現像装置の説明図、第２
図は当接圧による現像ローラのたわみを示す図、
第３図は当接圧による現像ローラのたわみを示す
別の説明図、第４図は線速比によるモーメント発
生の説明図、第５図は該モーメントによる現像ロ
ーラのたわみを示す図、第６図は現像ローラ当接
圧のトナー付着量偏差との関係を示すグラフ、第
７図は線速比とトナー付着量偏差との関係を示す
グラフ、第８図は本考案により溝を形成した補給
ローラの正面図、第９図は溝を拡大して示す補給
ローラの部分図、第１０図は従来のおよび本考案
の補給ローラを用いて行つた実験結果を示すグラ
フ、第１１図は本考案による別の実施例の補給ロ
ーラの正面図を示す。
２…トナー（現像剤）、４，１４…トナー補給
ローラ（現像剤補給部材）、５…現像ローラ（現
像剤担持体）、６…トナー層厚規制部材（現像剤
規制部材）、７…感光体（潜像担持体）、１５…
溝。
Figure 1 is an explanatory diagram of a contact type one-component developing device, Figure 2
The figure shows the deflection of the developing roller due to contact pressure.
FIG. 3 is another explanatory diagram showing the deflection of the developing roller due to contact pressure, FIG. 4 is an explanatory diagram of moment generation due to the linear speed ratio, FIG. 5 is a diagram showing the deflection of the developing roller due to the moment, and FIG. The figure is a graph showing the relationship between the developing roller contact pressure and the toner adhesion amount deviation, Fig. 7 is a graph showing the relationship between the linear velocity ratio and the toner adhesion amount deviation, and Fig. 8 is a graph showing the relationship between the developing roller contact pressure and the toner adhesion amount deviation. A front view of the roller, FIG. 9 is a partial view of the replenishment roller showing the grooves enlarged, FIG. 10 is a graph showing the results of experiments conducted using the conventional and inventive replenishment rollers, and FIG. 11 is the replenishment roller of the present invention. FIG. 6 shows a front view of another embodiment of the replenishment roller according to the present invention. 2... Toner (developer), 4, 14... Toner supply roller (developer supply member), 5... Development roller (developer carrier), 6... Toner layer thickness regulation member (developer regulation member), 7... Photosensitive body (latent image carrier), 15...
groove.
Claims (1)
現像剤担持体表面上に補給し、かく補給された現
像剤を前記現像剤担持体表面に先端を摺擦するよ
うに圧接される所定幅の現像剤規制部材を用いて
均一薄層状になして、潜像担持体上の潜像の現像
を行う現像装置において、前記補給部材が中央部
で逆向きになる螺旋状の溝を備え、現像剤担持体
が１回転する間にその表面上のすべての点が少く
とも１回以上補給部材の各溝と当接するように前
記螺旋状の溝のピツチが選択されていることを特
徴とする現像装置。 (2) 前記補給部材に設ける溝の深さが、現像剤
担持体との当接凹み量以下であり、かつ現像剤の
粒径の４倍以上であることを特徴とする請求項１
に記載の現像装置。 (3) 前記補給部材に設けた螺旋状の溝が、現像
剤担持体との当接圧により開く深さの切込みによ
り形成されていることを特徴とする請求項１又は
２に記載の現像装置。[Claims for Utility Model Registration] (1) A dry one-component developer is replenished onto the surface of the developer carrier by a developer replenishing member, and the tip of the replenished developer is rubbed on the surface of the developer carrier. In a developing device that develops a latent image on a latent image carrier by forming a uniform thin layer using a developer regulating member of a predetermined width that is pressed against the developer, the replenishing member is oriented in the opposite direction at the center. A spiral groove is provided, and the pitch of the spiral groove is selected such that all points on the surface of the developer carrier come into contact with each groove of the replenishing member at least once during one rotation of the developer carrier. A developing device characterized by: (2) The depth of the groove provided in the replenishing member is equal to or less than the depth of the contact dent with the developer carrier, and is at least four times the particle size of the developer.
The developing device described in . (3) The developing device according to claim 1 or 2, wherein the spiral groove provided in the supply member is formed by a cut deep enough to open due to contact pressure with the developer carrier. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4215190U JPH043445U (en) | 1990-04-20 | 1990-04-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4215190U JPH043445U (en) | 1990-04-20 | 1990-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH043445U true JPH043445U (en) | 1992-01-13 |
Family
ID=31553438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4215190U Pending JPH043445U (en) | 1990-04-20 | 1990-04-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH043445U (en) |
-
1990
- 1990-04-20 JP JP4215190U patent/JPH043445U/ja active Pending
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