JPS6146557U

JPS6146557U - developing device

Info

Publication number: JPS6146557U
Application number: JP13129184U
Authority: JP
Inventors: 知裕亀山; 信雄秋場
Original assignee: Casio Computer Co Ltd
Current assignee: Casio Computer Co Ltd
Priority date: 1984-08-31
Filing date: 1984-08-31
Publication date: 1986-03-28

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は２色画像形成装置の構成図、第２図は２色画像
を形成するプロセス説明図、第３図は第２現像器６に使
用される本考案の現像装置の一例を示す構成図である。１・・・・・・感光体、２・・・・・・第１帯電コロナ
チャージャ、３・・・・・・逆極性帯電コロナチャージ
ャ、４・・・露光、５・・・・・・第１現像器、６・・
・・・・第２現像器、７・・・・・・極性合せコロナチ
ャージャ、８・・・・・・転写紙、９・・・・・・分離
用コロナチャージャ、１ｏ・・曲転写用コロナチャージ
ャ、１１・・・・・・清掃器、１２・・・・・・イレー
タランプ、１３・・・・・・レッドフィルタ、１４・・
曲シアンフィルタ、１５・・・・・・現像ロール、１６
・・・・・・キャリア回収ロール、１７・・・・・・搬
送ロールク・１８・・・・・・スクレーパ、１９・・・
・・・非磁性トナー、２０・・・・・・キャリア、２１
・・・・・・永久磁石ロール、２２・・・・・・磁性体
、２３・・・・・・永久磁石、２４・・曲バイアス電源
、２５・・・・・・バイアス電源。FIG. 1 is a configuration diagram of a two-color image forming apparatus, FIG. 2 is an explanatory diagram of a process for forming a two-color image, and FIG. 3 is a configuration showing an example of the developing device of the present invention used in the second developing device 6. It is a diagram. 1... Photoreceptor, 2... First charging corona charger, 3... Reverse polarity charging corona charger, 4... Exposure, 5... First charging corona charger. 1 developer, 6...
...Second developing device, 7...Polarization corona charger, 8...Transfer paper, 9...Separation corona charger, 1o...Corona for music transfer Charger, 11... Cleaner, 12... Irator lamp, 13... Red filter, 14...
Curved cyan filter, 15...Developing roll, 16
...Carrier recovery roll, 17...Transportation roll, 18...Scraper, 19...
...Nonmagnetic toner, 20...Carrier, 21
... Permanent magnet roll, 22 ... Magnetic material, 23 ... Permanent magnet, 24 ... Curved bias power supply, 25 ... Bias power supply.

Claims

[Scope of utility model registration request]

(1) In a developing device that develops an electrostatic latent image on an image bearing member, the developing device contains a developer consisting of a magnetic carrier and a non-magnetic toner, and is activated by applying a bias voltage provided close to the image bearing member. a developing roller that attracts the non-magnetic toner and develops the electrostatic latent image; a collecting means that is provided in close proximity to the developing roll and collects the magnetic carrier adhering to the developing roll; a bias voltage applying means for applying a bias voltage; and a bias voltage applying means for applying a bias voltage; A developing device comprising: magnetic field generating means for generating a magnetic field between the developing devices.

(2) A request for registration of a utility model characterized in that the bias voltage is any one of a DC voltage, a positive or negative polarity biased AC voltage, a half-wave rectified pulsating voltage, or a full-wave rectified pulsating voltage. The developing device according to item 1.

(3) The developing device according to claim 1 or 2, wherein a bias voltage having a polarity opposite to the bias applied to the developing roll is applied to the collecting means.

(4) The developer is a mixture of a non-magnetic toner that is charged to the opposite polarity to the electrostatic latent image and a magnetic carrier that is charged to the same polarity as the electrostatic latent image due to mutual friction. A developing device according to claims 1 to 3 of the utility model registration claims.