JPS6321955U

JPS6321955U -

Info

Publication number: JPS6321955U
Application number: JP11534586U
Authority: JP
Priority date: 1986-07-29
Filing date: 1986-07-29
Publication date: 1988-02-13

Description

[Brief explanation of the drawing]

第１図は本考案の多色記録装置の実施例を示す
概略構成図、第２図はその記録媒体の他の例を示
す縦断面図、第３図は第２の現像器の現像バイア
スの波形図、第４図は本考案の装置において形成
される静電潜像の説明図、第５図はその静電潜像
と現像バイアスとの関係を示す説明図、第６図は
従来の多色記録装置の概略構成図、第７図は従来
の他の多色記録装置の概略構成図である。１…記録媒体ドラム、２ａ，２ｂ…静電記録ヘ
ツド、３ａ，３ｂ…帯電器、４ａ，４ｂ…現像器
、５…クリーニング装置、７…記録用紙、９…転
写器。 FIG. 1 is a schematic configuration diagram showing an embodiment of the multicolor recording device of the present invention, FIG. 2 is a vertical sectional view showing another example of the recording medium, and FIG. 3 is a diagram showing the developing bias of the second developing device. 4 is an explanatory diagram of the electrostatic latent image formed in the apparatus of the present invention, FIG. 5 is an explanatory diagram showing the relationship between the electrostatic latent image and the developing bias, and FIG. FIG. 7 is a schematic diagram of another conventional multicolor recording device. DESCRIPTION OF SYMBOLS 1... Recording medium drum, 2a, 2b... Electrostatic recording head, 3a, 3b... Charger, 4a, 4b... Developing device, 5... Cleaning device, 7... Recording paper, 9... Transfer device.

Claims

[Claims for Utility Model Registration] 1. First latent image levels having different polarities with respect to the reference latent image level corresponding to the background area.
means for forming an electrostatic latent image and a second electrostatic latent image; and a means for developing the first electrostatic latent image using toner of a first polarity to form a first toner image. a second developer, which after development develops the second electrostatic latent image with a second toner of opposite polarity to the first toner to form a second toner image; a developing device, at least this second developing device has a
This is a non-contact development method using a one-component developer, in which a developing bias electric field is applied using an alternating voltage with a predetermined amplitude centered around a predetermined voltage, and the amplitude of the alternating voltage is , wherein the voltage is selected to a value that does not exceed a voltage at which the first toner starts flying when the first toner image enters a developing bias electric field of the second developing device. Color recording device. 2 The frequency of the alternating voltage is 1KHz or more and 5K
The multicolor recording device according to claim 1, wherein the recording frequency is set to Hz or less. 3. The multicolor device according to claim 1, wherein the distance between the developing roll of the second developing device and the recording medium is selected to be 0.05 mm or more and 0.4 mm or less. Recording device.