JPS6417545U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は実施例の説明図、第２図は多色像形成
装置の概略構成図である。 図において、１は現像ローラ、２は現像容器、
３，４はブレード、５はモータ、６は駆動制御部
、１０は感光ドラムである。 FIG. 1 is an explanatory diagram of an embodiment, and FIG. 2 is a schematic diagram of a multicolor image forming apparatus. In the figure, 1 is a developing roller, 2 is a developing container,
3 and 4 are blades, 5 is a motor, 6 is a drive control section, and 10 is a photosensitive drum.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 像担持体１０と、該像担持体１０上に静電潜像
を形成する手段１２，１５と、該像担持体１０上
の静電潜像を現像するための現像ローラ、現像ロ
ーラ上の磁気ブラシを長さＬ１に規制する第１の
規制板及び該現像ローラを回転駆動する駆動部を
含む現像手段と、を備えると共に、該現像手段は
、夫々異なる色の現像粉で該像担持体上の静電潜
像を現像する複数の現像器１３，１６で構成され
て成る多色像形成装置であつて、前記現像器１３
，１６は現像ローラ１上の磁気ブラシ長さＬ２（
＜Ｌ１）に規制する第２の規制板４を備えると共
に、前記第１の規制板３及び第２の規制板４は像
担持体１０の現像位置ａを挟んで両側に配置され
て成り、前記駆動部５が前記現像ローラ１を正逆
回転可能に構成されてなり、且つ前記現像器によ
る現像動作を行なわない場合は前記現像ローラを
逆転して現像ローラ上の磁気ブラシの長さをＬ２
とする駆動制御部６を備えて成ることを特徴とす
る多色像形成装置。 An image carrier 10, means 12 and 15 for forming an electrostatic latent image on the image carrier 10, a developing roller for developing the electrostatic latent image on the image carrier 10, and a magnetism on the developing roller. A first regulating plate that regulates the brush to a length L1 and a developing means that includes a drive unit that rotationally drives the developing roller, and the developing means applies developing powders of different colors onto the image carrier. This is a multicolor image forming apparatus comprising a plurality of developing devices 13 and 16 for developing an electrostatic latent image, wherein the developing device 13
, 16 is the length L2 of the magnetic brush on the developing roller 1 (
<L1), and the first regulating plate 3 and the second regulating plate 4 are arranged on both sides of the developing position a of the image carrier 10, and the above-mentioned The driving section 5 is configured to be able to rotate the developing roller 1 forward and backward, and when the developing device does not perform a developing operation, the developing roller is reversed and the length of the magnetic brush on the developing roller is set to L2.
1. A multicolor image forming apparatus comprising a drive control section 6.