JPH0311249U

JPH0311249U -

Info

Publication number: JPH0311249U
Application number: JP6904589U
Authority: JP
Priority date: 1989-06-15
Filing date: 1989-06-15
Publication date: 1991-02-04

Description

[Brief explanation of drawings]

第１図は本考案における一成分現像装置の第一
実施例を示す概略図、第２図は第一実施例に係る
トナー量規制部材と支持体との係合状態を示す断
面図、第３図は第二実施例に係るトナー量規制部
材と支持体との係合状態を示す断面図、第４図ａ
，ｂ，ｃは夫々第一実施例と比較例との実験結果
を示すグラフ、第５図及び第６図は夫々第一実施
例に係る一成分現像装置の変形例を示す概略図、
第７図は磁性トナーを用いた従来の一成分現像装
置を示す概略図、第８図は非磁性トナーを用いた
従来の一成分現像装置を示す概略図、第９図は従
来装置におけるトナー量規制部材と支持体との係
合状態を示す断面図、第１０図はトナー量規制部
材の自由端に作用する力を示す説明図、第１１図
はトナー量規制部材と支持体との係合状態を示す
拡大断面図、第１２図ａ及びｂは従来装置におけ
るトナー量規制部材の固定状態を示す平面図及び
斜視図である。符号の説明、１……現像ロール（現像剤担持体
）、２……ホツパー（現像剤供給手段）、３……
トナー量規制部材、４……支持体、３１ａ……被
挟持部、４２，４３……支持部材、４２ａ，４３
ａ……挟持面、４２ｂ……係止面、４４……スペ
ーサ、Ｄ……静電潜像担持体、Ｉ……静電潜像、
Ｔ……現像剤。 FIG. 1 is a schematic diagram showing a first embodiment of a one-component developing device according to the present invention, FIG. The figure is a sectional view showing the state of engagement between the toner amount regulating member and the support body according to the second embodiment, and FIG.
, b, and c are graphs showing the experimental results of the first embodiment and the comparative example, respectively; FIGS. 5 and 6 are schematic diagrams showing modified examples of the one-component developing device according to the first embodiment, respectively;
FIG. 7 is a schematic diagram showing a conventional single-component developing device using magnetic toner, FIG. 8 is a schematic diagram showing a conventional single-component developing device using non-magnetic toner, and FIG. 9 is a schematic diagram showing the amount of toner in the conventional device. 10 is an explanatory diagram showing the force acting on the free end of the toner amount regulating member. FIG. 11 is a sectional view showing the engagement between the toner amount regulating member and the support. FIGS. 12A and 12B are an enlarged sectional view showing the state and a plan view and a perspective view showing the fixed state of the toner amount regulating member in the conventional device. Explanation of symbols: 1...Developing roll (developer carrier), 2...Hopper (developer supply means), 3...
Toner amount regulating member, 4...Support body, 31a...Snipped portion, 42, 43...Support member, 42a, 43
a... Holding surface, 42b... Locking surface, 44... Spacer, D... Electrostatic latent image carrier, I... Electrostatic latent image,
T...Developer.

Claims

[Scope of Claim for Utility Model Registration] (1) A developer carrier that faces an electrostatic latent image carrier and conveys developer along a predetermined path, and a one-component development system consisting of only toner on this developer carrier. a developer supplying means for supplying a developer; and a plate spring having one end biased toward the developer carrier, and an amount of toner that is pressed against the developer carrier to form a thin layer of developer. In the one-component developing device equipped with a regulating member, the toner amount regulating member has one end held and fixed by a support, and the support has a pair of clamping surfaces that sandwich the toner amount regulating member. 1. A one-component developing device, comprising: a locking surface that locks an end surface of a pinched portion of a toner amount regulating member. (2) The support body is composed of a pair of support members having a clamping surface and a spacer having a locking surface and interposed between the pair of support members. Component developing device. (3) When the thickness of the clamped portion of the toner amount regulating member is t, the width l of the locking surface provided on the support is selected so as to satisfy 0.1t≦l≦1.0t. The one-component developing device according to claim 1 or 2, characterized in that: