JPH03122454U

JPH03122454U -

Info

Publication number: JPH03122454U
Application number: JP3097590U
Authority: JP
Priority date: 1990-03-28
Filing date: 1990-03-28
Publication date: 1991-12-13

Description

[Brief explanation of drawings]

第１図は現像装置の一例を示す概略断面図、第
２図は現像ローラの導電性シートと誘電体と該ロ
ーラに付着するトナーだけを模式的に拡大して示
した説明図、第３図は同じく導電性シートの開口
部ないしは誘電体を模式的に拡大して示した現像
ローラ表面の平面図、第４図は誘電体と導電面の
間に形成される微小電界の電気力線を示した説明
図、第５図は導電性ローラに導電性シートを貼り
付けるときの様子を示した斜視図、第６図ａ，ｂ
，ｃ，ｄは現像ローラの各製造工程を示す拡大模
式図、第７図は導電性シートの部分拡大斜視図で
ある。２……現像装置、４……非磁性トナー、９……
現像領域、１１……誘電体、１００……導電性シ
ート、１０１……開口部。 FIG. 1 is a schematic sectional view showing an example of a developing device, FIG. 2 is an explanatory diagram schematically showing only the conductive sheet, dielectric material, and toner attached to the developing roller, and FIG. 3. 4 is a plan view of the developing roller surface schematically showing an enlarged view of the openings in the conductive sheet or the dielectric, and FIG. 4 shows the lines of electric force of the minute electric field formed between the dielectric and the conductive surface. FIG. 5 is a perspective view showing how the conductive sheet is attached to the conductive roller, and FIG. 6 a, b
, c, and d are enlarged schematic diagrams showing each manufacturing process of the developing roller, and FIG. 7 is a partially enlarged perspective view of the conductive sheet. 2...Developing device, 4...Nonmagnetic toner, 9...
Development area, 11... dielectric, 100... conductive sheet, 101... opening.

Claims

[Claims for Utility Model Registration] Non-magnetic toner is supplied to a rotationally driven toner carrier, the toner is carried on the surface of the carrier and is conveyed, and the latent image carrier and the toner carrier face each other. In the developing device, the electrostatic latent image formed on the latent image carrier is visualized by the toner carried on the toner carrier in a developing region, wherein the toner carrier is a conductive substrate. a conductive sheet fixed to the surface of the base in a conductive state and having regularly or irregularly formed openings; and a dielectric buried in the openings; By charging the body to a predetermined polarity, a minute closed electric field is formed near the surface of the toner carrier, and the toner used for visualizing the electrostatic latent image is carried by the closed electric field. A developing device characterized by being provided with charging means for adhering to a body surface.