JPS5954037B2 - Electrostatic recording electrode - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrostatic recording electrode for controlling the flow of charged particles in an electrostatic recording method for controlling charged particles such as ions.

Conventionally, this type of electrode had a structure in which an electrode body 2 was arranged around one side of a small diameter hole formed in a dielectric body 1, and a common electrode body 3 was provided on the other side, as shown in FIG. Therefore, the arrangement pitch of one electrode body 2 is about 250μ, making it difficult to achieve higher density.

2. Due to the adhesion of charged particles to the inner surface of the small-diameter pores, the amount of charged particles passing through the small-diameter pores changes, and the electrostatic latent image formed by the charged particles is disturbed. For details of this conventional example, see Kubota, Miyoshi: Study of facsimile receiver using ion flow electrostatic recording, Proceedings of the 5th National Conference of the Institute of Image Electronics Engineers, No. 14, 1977, 5).

In order to eliminate the above-mentioned drawbacks, this invention has a structure of an electrostatic recording electrode that controls the flow of charged particles by arranging a large number of electrode bodies on opposing surfaces of an insulator. By increasing the density of the array pitch of electrostatic recording electrodes,
The purpose is to stabilize the amount of charged particles passing through.

This invention will be explained below. First, the principle of this invention will be explained with reference to FIGS. 2a and 2b.

In FIG. 2, reference numeral 11 denotes a charged particle generator 7, for example, an ion generator such as a corotron can be used. 1
2 is a power source that applies voltage to the charged particle generator 11;
Reference numeral 3 denotes an electrostatic recording electrode, and electrode bodies 15A and 15B are provided on opposing surfaces of insulators 14A and 14B placed across a charged particle path, respectively, insulated from each other.

16 is a power source for controlling charged particles passing through the passage of the electrostatic recording electrode 13, and 17 is a back electrode.

Next, the control 5 of charged particles by the electrostatic recording electrode 13 will be explained.

The charged particles generated from the charged particle generator 11 are as shown in FIG.
When no control pressure is applied to the electrostatic recording electrode 13 as shown in FIG. On the other hand, when a control voltage is applied to the electrostatic recording electrode 3 by the power supply 6 as shown in FIG. 2b, an electric field EO perpendicular to the electric field Ep is generated.
E for charged particles. The force of the vector sum of and Ep acts.
Therefore, as the applied voltage increases, the amount of deflection of charged particles increases, and they no longer pass through the path of the electrostatic recording electrode 13. Figures 3A and 3b show a basic example of this invention based on the above principle, Figure 3a is a schematic configuration diagram, and Figure 3b is a
FIG. 3 is an enlarged partial perspective view of the rear side showing details of the electrostatic recording electrode of FIG.

In these figures, 18 is a voltage control device, 19 is an electrostatic recording paper, and 15A and 15B in FIG. formed on the opposing surface. Note that other symbols in Fig. 3a are 2nd
It is the same as the figure. Next, this operation will be explained.

By controlling the voltage control device 18 and applying a predetermined voltage to the electrostatic recording electrode 13, charges generated from the charged particle generator 11:
When the electric particles do not pass through the path of the electrostatic recording electrode 13 and the voltage applied to the electrostatic recording electrode 13 is turned off in response to a recording signal, the electrode body in the portion corresponding to the recording signal] Charged particles pass only between 5A and 15B, and an electrostatic latent is formed on the electrostatic recording paper 19 according to the recording signal 2. This electrostatic latent image is developed and fixed using a magnetic brush development method or the like. Note that it is also possible to use a dielectric drum instead of electrostatic recording, develop the electrostatic latent image on the dielectric drum, and transfer it to plain paper. FIG. 4 shows an embodiment of the electrostatic recording electrode 13 according to the present invention, in which a recess 2 is formed on the surface of the insulator 14A facing the insulator 14B.
0 is formed in large numbers, and an electrode body 15A is provided on the bottom surface of each recess 20. On the other hand, on the surface of the insulator 14B facing the insulator 14A, each of the five electrodes 15A and the opposing electrode body 15B are provided so as to be insulated from each other. According to this configuration, the passages of the charged particles are made independent, so that interaction between adjacent electrode bodies of the electrostatic recording electrode 13 and leakage of charged particles between the electrode bodies can be prevented. 4. FIG. 5 shows another embodiment of the present invention, which differs from the embodiment in FIG. B. This embodiment is easy to manufacture.The electrostatic recording electrode 13 is composed of a dielectric material and a conductive material, for example, by depositing a metal on a dielectric material such as polyimide. be able to.

Although the recess 20 is provided only in the insulator 14A in the embodiments shown in FIGS. 4 and 5, experiments have shown that it may be provided on the insulator 14B side or on both sides. The electrostatic recording electrode 13 is constructed by depositing Ag on an acrylic plate using ions generated from a corotron.
The distance between each electrode body 15A and 15B is 1 mm, and the thickness is 1 m.
When the arrangement pinch was set to 0.1 to 1 mm, the amount of ions passing between the electrode bodies could be controlled on and off by changing the applied voltage between 0 and 500 V.

As explained above, in this invention, an electrostatic recording electrode is constructed by arranging a large number of electrode bodies on opposing surfaces of an insulator placed across a passage, so that the arrangement pitch of the electrode bodies can be increased. In addition, since charged particles do not adhere to the insulator, the amount of passing charged particles can be accurately controlled and stable recording can be performed.

In addition, in this invention, a large number of recesses are formed in at least one of the opposing surfaces of two insulators, and the recesses are used as passages for charged particles. It has excellent advantages such as being able to prevent leakage.

[Brief explanation of the drawing]

Figure 1 is a schematic diagram of a conventional electrostatic recording electrode, Figure 2 A, b
3A and 3B are diagrams for explaining the principle of this invention, FIGS. 3A and 3B are schematic configuration diagrams showing a basic example of this invention, and enlarged perspective views showing details of electrostatic recording electrodes, and FIGS. 4 and 5. These are perspective views of electrostatic recording electrodes showing examples of the present invention.

Claims (1)

[Scope of Claims] 1. A large number of recesses are formed in at least one of the opposing surfaces of two insulators, an electrode body is provided on the bottom surface of each of these recesses, and a surface of the other insulator opposite to the recesses or A plurality of recesses provided opposite to the recesses are each provided with an electrode body insulated from each other, and both the insulators are brought into close contact with each other with the electrode bodies facing each other, so that each of the recesses can be used to collect individual independent charged particles. The electrostatic device is formed into a passageway, and the charged particles passing between the electrode bodies are controlled by an electric field between the opposed electrode bodies formed by an electric signal applied between the opposed electrode bodies. Electrode for electrographic recording. 2. The electrostatic recording electrode according to claim 1, wherein each electrode body provided on one insulator is formed in common by a conductive surface.