JPS58108174A - Recorder - Google Patents

Abstract

PURPOSE:To prevent the occurrence of leak between electrodes due to the contact of magnetic toner between segment electrodes by a method in which the segment electrodes are set on a high polymer film and a counter electrode covered with a high polymer is provided between the electrodes. CONSTITUTION:Segment electrodes 7 consisting of copper foils, for example, are set on a high polymer (e.g., polyimide resin) film base layer 16, and a counter electrode covered with a non-magnetic and insulating high polymer (e.g., PP, polyester, etc.) layer 17 having excellent fluidity for the magnetic toner is formed between the electrodes 7. A magnetic toner developer in which said counter electrode is provided on a cylindrical sleeve with a rotary magnetic roller is set at a place facing a recording electrode through the insulating recording medium. By applying voltage to the recording electrode by transferring the magnetic toner onto the periphery of the cylindrical sleeve and also by applying anti-polar voltage to the counter electrode, charge is given to the toner carried onto the segment and the magnetic toner is adhered to the recording medium.

Description

Detailed Description of the Invention (5) Technical Field of the Invention The present invention relates to an image recording device used for printing, etc., in which a recording electrode and a toner developing device are connected via an insulating recording body. The present invention relates to a recording apparatus in which a toner image is formed on an insulating recording medium at the same time as an image signal is applied.

(b) Background of the technology As an image recording device, it is known that a toner image formed on the surface of a recording medium is transferred to a recording paper. There is known an apparatus that performs development by adsorbing toner after forming a charge according to the toner.

0 Prior Art and Problems Figure 1 shows the configuration of a printing section, and the recording electrode 1 is a multi-stylus electrode arranged in rows of electrode needles consisting of a plurality of groups. An insulating recording body 3 made of a dielectric film is brought into contact with this recording electrode 1. A magnetic toner developing device 6 having a rotating magnetic roller 5 inside a cylindrical sleeve 4 shortened in one direction is connected to a recording current through an insulating recording medium 3.
Install it in a position opposite to l. Further, on the cylindrical sleeve 4, a counter electrode 7 divided into a plurality of segments is arranged in close contact with each other. The recording means transfers magnetic toner to the outer circumference of the cylindrical sleeve 4, adds an electrode corresponding to the recording electrode needle 2Km- signal, and applies a voltage of opposite polarity to the voltage applied to the recording electrode needle 2 to the counter electrode 7. By selectively adding
In this method, the magnetic toner selected and carried onto the nine segments is charged, and the magnetic toner is attached to the insulating recording medium 3 to form a toner image.

FIG. 2 shows the configuration of the recording apparatus, and the recording process will be explained using this diagram. The insulating recording body 3 is made of a dielectric film in the form of a belt and rotated at a constant speed by a cylinder 8.9.10.

The tip of the recording electrode 1 is placed in contact with the glue of the belt-shaped insulating recording body 3. Further, the magnetic toner developing device 6 having the aforementioned counter electrode 7 on the surface of the cylindrical sleeve 40 is installed opposite the recording electrode 1.

After forming the toner gI& on the insulating recording medium 3 by the method described in FIG. 3, and the toner image is transferred onto the recording paper 11 from the back side using the transfer corotron 12. Thereafter, the transferred image on the recording paper 11 is fixed to the recording paper 11 by a pressure fixing device 13. On the other hand, the insulating recording body 3 is further rotated, and the charge of the magnetic toner remaining on the insulating recording body 3 is erased by performing cycorona static elimination using the four-stage static eliminator 14 at the grounded cylinder 8 part. This weakens the adhesion to the insulating recording material 3. When the insulating recording material 3 is further rotated and conveyed to the printing section, the remaining magnetic toner is collected by the magnetic force of the developing machine 6.

By repeating the above recording process a--, images can be continuously output on the recording paper.

The present direct recording device 4I* can perform the latent image forming process using the recording electrode and the developing process using the developing machine at the same time, so the device configuration is simple, compact, and inexpensive. In addition, since magnetic toner is used and untransferred toner can be collected in the developing machine and reused without cleaning, maintenance is easy and the cost of consumables is low.

Now, problems with the conventional recording apparatus will be explained with reference to FIG. 3 (enlarged view of the developing section).

In the scissors recording device, when printing is performed continuously, the counter electrode 7
Low resistance substances (carbon, etc.) contained in Toner 15
adheres to the electrodes, causing voltage leakage between adjacent electrodes.

The recording apparatus employs a matrix drive method in which printing is performed by selectively applying a voltage O to the recording electrode 1 and the segment-shaped opposing electrode 7. Therefore, voltage leakage between adjacent electrodes has a large effect on printing.

On the other hand, in the matrix drive method, voltage is applied to the segment electrodes corresponding to the portion where printing is performed, and the other electrodes are grounded. Therefore, if the resistance between the electrodes is low, voltage leakage is likely to occur. Actually, conductive toner is transported on the counter electrode, but when using conductive toner with a toner resistance value of 10'Ω1 or more, a voltage of 400μ is applied to the counter electrode. However, voltage leakage between the electrodes does not occur at all.

However, if toner-containing substances such as carbon adhere between the electrodes, a leak of 100V to 200V may occur under any conditions, the print density may become thinner, and control using the counter electrode may become impossible. It ends up.

0 OBJECTS OF THE INVENTION An object of the present invention is to provide a recording device that can prevent a drop in recording voltage level due to leakage between opposing electrodes of the recording device.

(6) Structure of the Invention According to the present invention, a magnetic recording electrode formed of a plurality of arranged electrodes and an insulating recording medium are sandwiched between the magnetic recording electrode and the recording electrode. It has a magnetic toner developing section consisting of a roller, and a sleeve that encloses the magnetic roller and has a counter electrode section on its surface, and selectively applies a voltage between the metallic silver electrode and the counter electrode. In the recording device which attaches the magnetic toner conveyed onto the sleeve to the insulating recording medium by applying the magnetic toner, the opposing electrode part is a segment electrode formed on a paste sheet made of a polymer medium; This is achieved by providing a recording device characterized by having a layer of a non-magnetic and insulating polymer material with excellent activity for magnetic toner provided between the skeleton segment electrodes.

η　Embodiments of the invention Embodiments of the present invention will be described in detail below with reference to the drawings.

The configuration of an embodiment of the present invention is shown in FIGS. 5A to 5C. In the figure, the thickness of the base layer 16 (boli-containing resin layer) is 25 μm, the counter electrode 7 is a copper foil of 355 m, and the coating layer 1 is 25 μm thick.
7 is polyind, polyester, polyethylene, polyvinyl chloride.

Made of polypropylene, etc., with a total thickness of 605 mg.
It has a very thin structure.

Note that the distance between the opposing electrodes is 1W to 0.5 mta. This gap is set to an optimum value from the relationship between the applied voltage and the toner resistance value.

This structure allows the magnetic toner to be smoothly conveyed on the opposing electrode 7, and also has the effect of preventing leakage between the electrodes due to adhesion of magnetic toner etc. even during continuous printing.

0 Effects of the Invention According to the present invention, since it is possible to prevent leakage between the electrodes due to adhesion of magnetic toner between the opposing electrodes, there is an effect that good printing can be obtained in the cough recorder.

[Brief explanation of drawings]

FIG. 1 is a block diagram of the developing section of the recording device, FIG. 2 is a block diagram of the recording device, FIG. 3 is a detailed diagram of the developing section, FIG. 4 is a block diagram of the conventional counter electrode section, and FIG. 5 is a block diagram of the conventional counter electrode section. FIG. 2 is a configuration diagram of an embodiment. 1: Recording electrode, 2: Recording electrode needle, 3: Insulating recording body, 4
Nisleeve, 5: Magnetic p-2, 6: @ Wingman, 7'7: Opposite electrode, 8.9.10 Nijilinda-111: Recording paper, 1
2: Transfer=za)ay, 13: Pressure fixing device, 14: Static elimination:=+a)ay, 16.16': Base layer, 17,1γ
: Covering layer. Calculation Mekaya 2 Kinuta

Claims (1)

[Claims] A magnetic wire is provided at a position facing the scissor recording electrode, sandwiching the recording electrode consisting of a plurality of O electrodes and the insulating recording material.
-2, and a sleeve surrounding the magnetic pole and having a counter electrode section on its surface, and selectively applying a voltage between the recording electrode and the counter electrode. In a recording device that causes magnetic toner conveyed on a sleeve to adhere to the insulating recording medium, the counter electrode portion includes a segment electrode formed on a base film made of a polymeric material, and a segment electrode formed on a base film made of a polymeric material. A recording device comprising a coating layer of a highly fluid, non-magnetic and insulating polymer material for magnetic toner provided between electrodes.