JPS5814772A - Manufacture of electrostatic recording head - Google Patents

Abstract

PURPOSE:To obtain the cheap electrostatic recording head, man-hours therefore are reduced remarkably, by arranging control electrode units, at least one end sections thereof have prismatic sections, to a flat plate, joining or bonding them and molding them with resin. CONSTITUTION:A control electrode row is formed in such a manner that the control electrode units 1210 consisting of prismatic sections 1211 with sections according to predetermined size, thin (small sectional area) conductor sections 1212 joining to the sections 1211 and small flat sections 1213 for connecting lead wires are manufactured through a method such as the cold rolling method of a brass wire or a phosphor bronze wire, and the units are joined or bonded to the plate 1220 flat in the one end surfaces of the prismatic sections 1211 only by prescribed number so as to equalize to the arranging pitch of the control electrodes. Epoxy resin is casted, a broken line section is cut, and the control electrodes are separated.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrostatic recording device, and more particularly to a method for manufacturing a multi-stylus type electrostatic recording head suitable for recording image signals in facsimiles, printers, etc.

Conventionally, various multi-stylus type electrostatic recording heads that electronically perform scanning distribution of image signals to be recorded have been put into practical use.

The electrostatic recording head used for facsimile is a multi-stylus type in which a large number of recording electrodes, each corresponding one-to-one to each pixel corresponding to one recording scanning line, are arranged in a line in an insulating material such as an epoxy resin mold. Image signals are electronically scanned and distributed by the action of auxiliary electrodes placed on the front or back surface of the recording medium that is used and in close contact with the recording medium.

Figure 1 shows an example of a so-called coplanar control type electrostatic recording head in which recording electrodes and auxiliary electrodes are arranged on the same surface side with respect to the recording medium. Each electrode holder (103) is made of an insulating material such as epoxy resin at a density of several or more electrodes and is embedded independently in a line with the tips thereof exposed. (102) is an auxiliary electrode, and the recording electrode (101) is divided into groups of the same number, and the electrode holder (103) is placed close to each group on both sides and on the same surface. buried or exposed. The auxiliary electrode (102) is the recording electrode (1
Since it has the function of controlling the recording position of 01), it is also called a control electrode. In electrostatic recording, the recording voltage is divided into approximately two parts and applied to the recording electrode (101) and the control electrode (102), and both voltages are applied simultaneously to the electrostatic recording paper (104).
Recording is performed only at the position.

Next, the recording mechanism will be explained with reference to FIG. 2, which shows the electrode configuration of the same-plane control type electrostatic recording head. Second
In the figure, a number of recording electrodes (201) are each connected to m
The recording electrodes in the same relative position in every other electrode group are connected to each other to form two systems of GA and QB electrode groups. The recording electrode (201) is arranged so as to correspond from the center of the control electrode (202) to the center of the adjacent control. Here, when the total number of recording electrodes and control electrodes is N and M, respectively, M
There is a relationship: = N/m-1-1.

Recording is performed simultaneously for each group of m recording electrodes (201), and the control electrode (202) is used to select the electrode group for recording. Specifically, in FIG. 2, when recording is performed with the first electrode group G-I, the system GA of the recording electrode group
Depending on the pattern to be recorded, high voltage pulses such as 300 V and OV, which alone do not create an electrostatic latent image, are applied and the control electrode (202) system GO
For example, a voltage of opposite polarity, the absolute value of which is approximately equal to 1 and 2, is applied to 1 and 2. As a result, a potential difference of 600 V or 300 V is generated between the recording electrode of electrode group G-1 and the electrostatic recording paper (not shown), and static electricity is generated on the surface of the electrostatic recording paper directly under the recording electrode where the potential difference of 600 V has occurred. An electric latent image is created. Next, recording electrode group G-2 is recorded by driving system GB of the recording electrode group and applying voltage to the second and third control electrodes. Qh below
and QB are alternately driven, the control electrodes are shifted one by one, and voltage is applied to two control electrodes at the same time, thereby scanning and recording one line.

Dividing the recording electrode groups into two systems and driving them alternately in this way, and driving the two control electrodes simultaneously is as follows:
This is done to prevent the potential distribution of the electrostatic recording paper (304) from decreasing at the end of the control electrode (302) as shown by the broken line in FIG. However, the potential distribution becomes almost flat as shown by the solid line, making it possible to create an electrostatic latent image that is uniform in the scanning direction. In addition, as shown in FIG. 1, a control electrode (102
) are arranged close to both sides of the recording electrode (101). Similarly, the electrostatic recording paper (1
04) is for flattening the potential distribution, and the control electrodes on both sides of the J recording electrode are connected in common to those facing each other.

Next, in FIG. 4 showing a conventional example of the structure of an electrostatic recording head having the electrode configuration shown in FIG.
) are the electrode wires constituting the recording electrodes shown in FIGS. 1 and 2, for example, polyurethane-coated wires with
, lrnII nickel wire. One end is embedded in a rectangular bar-shaped electrode holder (403) made of an insulating material such as epoxy resin, and is uniformly sprayed along the longitudinal direction to form a recording electrode (401). Electrode wire (405)
corresponds to the recording electrodes (401), and is divided into electrode groups each consisting of m electrodes, and every other electrode group is connected in common to electrode wires having the same relative position to form a 2m electrode wire set ( 406). This electrode wire set (
406) is the system G of the recording electrode group in Figure 2.
Corresponding to A and GB, they are wired and connected on the printed circuit board (407), and are connected to the recording electrode drive circuit (not shown) via the plug (408), and are connected to the recording electrode drive circuit (not shown) according to the image signal to be recorded. A high voltage pulse is supplied.

On the other hand, similarly to the recording electrode (401), the electrode holder (403)
), one end of which is close to both sides of the recording electrode (401), and two rows of rectangular control electrodes (402) arranged on the same plane are connected to the printed circuit board (402) via lead wires (409). 407), and the control electrodes facing each other with the recording electrode array sandwiched therebetween are commonly connected by through-hole connections. The printed circuit board (407) is then connected to a control electrode drive circuit (not shown) via a plug (408), and a high voltage pulse of opposite polarity to that of the recording electrode is supplied to control the recording position. It will be done.

Although not shown, the electrode holder (403) and the printed circuit board (407) are fixed by a housing, and together constitute an electrostatic recording head unit.

The conventional electrostatic recording head described above has a problem in that the wiring of recording electrodes, that is, electrode lines, is extremely complicated. That is, after grouping the 'electrode lines (405) constituting the recording electrode (401) shown in FIG. 4, it is necessary to distinguish between those having the same relative position to form a 'electrode line set (406)'. However, it is extremely difficult to accurately classify the positions and orders of a large number of thin electrode wires, and it is also not easy to connect the included electrode wires when wiring a set of electrode wires at once. In any case, it requires a great deal of skill to manufacture, and it is extremely difficult to inspect and correct incorrect wiring after work.

Furthermore, the electrode wires (405) intersect in a fairly complicated manner in the process of forming the electrode wire set (406), and the electrode wires come into contact with each other many times, and even though they are insulated, a relatively high voltage is applied. Therefore, there is a risk of dielectric breakdown and a risk of breakage due to shock or vibration, which poses problems in stability and reliability.

For example, in Fig. 1, the control electrode (102) is buried in the electrode holder and exposed together with the recording electrode (101), but this is because the square timber (1401) is cut into 7 slices as shown in Fig. 14. A tooth portion (1402) is formed by processing, and an electrode lead (1403) is attached to this tooth portion (1402).
) are prepared, a pair of control electrode members are prepared, and an electrode wire serving as a recording electrode is placed between the pair of members, and then they are integrally molded with resin. 1
It is made by cutting at the position indicated by the broken line in Figure 4.

This manufacturing method has the disadvantage that milling requires time and the manufacturing cost is high due to the increased number of steps.

The present invention specifically aims to eliminate this drawback and provide a manufacturing method for obtaining an inexpensive electrostatic recording head.

According to the present invention, after arranging the prismatic portions of a control electrode unit having a prismatic portion at least one end in a flat plate and joining or bonding them, the prismatic portions are integrally molded with the electrode wires constituting the recording electrodes, and then the resin The above object is achieved by cutting the flat plate, a part of the prismatic portion of the control electrode unit, and the electrode wire to form the control electrode and the recording electrode on the same plane.

The present invention will be explained below with reference to the drawings.

The present invention was made in the process of inventing a new electrostatic recording head that improved the problems of the conventional electrostatic recording head mentioned above. Although described as an example, the present invention is also applicable to manufacturing a conventional electrostatic recording head as shown in FIG.

The new electrostatic recording head is characterized in that it does not require classification of electrode wires for grouping recording chambers 1-, and it performs grooving of recording electrodes without forming electrode wire sets. , is a diagram showing the structure of this electrostatic recording head having the electrode configuration in FIG. 2. In the figure, (50
5) is an electrode wire, which is a copper, nickel or phosphor bronze wire of -0,04 to Q, l myr (determined by the arrangement density of the recording electrodes) and coated with an insulating film of resin such as Polmar, polyurethane or polyester to a thickness of 5 to 20 μm. Consists of coatings of varying thickness. Electrode wire (505
) is embedded in a rectangular rod-shaped electrode holder (503) made of an insulating material such as epoxy resin, and is in contact with the recording medium (at a predetermined pitch (0,
06 to 0.2) to expose the cross section and record the electrode (501)
On the other hand, the other end of the electrode wire (505) is connected to the recording electrode (501) on an electrode wire end holder (517) made of the same or similar insulating material as the electrode holder (503), as will be described in detail later. It is completely buried at the same pitch with no exposed parts. The electrode wires (505) between the electrode holder (503) and the electrode wire end holder (517) extend at a pitch equal to the arrangement pitch of the recording electrodes, as shown in FIG. Wiring board (507)
Each electrode wire is electrically connected to the required position.

The printed wiring board (507) is used to realize the configuration of recording electrodes of the electrostatic recording head in FIG. 2. That is, the recording electrodes (501) are divided into a large number of electrode groups each consisting of m electrodes, and the electrodes in the same relative position in every other electrode group are interconnected to form two systems of G and Qn electrode groups. The wiring to be formed is, for example, formed by photo-etching a copper-clad laminate.

FIG. 6, which shows only this printed wiring board (507), will be described in more detail.

In FIG. 6, (611) is a land for electrically connecting the electrodes, which are staggered at a constant pitch so as to correspond to the recording electrodes, that is, the electrode lines, and to facilitate division into groups. A predetermined number, for example, twice the number m of recording electrodes in an electrode group, that is, 2 m, are arranged in a column unit in a direction parallel to the arrangement direction of the recording electrodes (501). These 'Ik pole line connection lands (611
) is a conductor (61
2) is connected by wiring. These conductors (61
The set obtained in step 2) is connected to the recording electrode drive circuit as described above and supplied with a high voltage pulse corresponding to the 1Ill signal to be recorded. Alternatively, the conductor (612) is electrically connected to the conductor (614) on the back side of the board by a through hole (613) provided in a part of the conductor (612), and these conductors (
614) reaches a plug (608) for connection to a recording electrode drive circuit (not shown). In addition, this printed wiring board (607) is provided with a control electrode (embedded in the electrode holder (503) in FIG. 5 and exposed on the same plane as the recording electrode) in order to control the recording position of the recording electrode.
It has a land (615) for connecting the lead 1 (509) connected to the terminal (502) and a conductor (616) for guiding the land to the plug (608).

In addition, FIG. 6 describes a printed wiring board (60?) that integrates the IJ circuit part for grooving the recording electrode and the connection land and plug part for control electrode wiring. However, these may be constructed separately, for example, the matrix circuit portion may be a flexible printed circuit board, the other may be a rigid printed circuit board, and the two may be integrated by bonding to establish an electrical connection. FIG. 7 shows an example of an electrostatic recording head in that case, and FIG. 8 shows an example of a flexible substrate.

In FIG. 8, (807) is a flexible printed circuit board made of polyester, polyimide, or glass epoxy laminate with a thickness of 25 to 125 μm, and terminals (
815), land (811), conductor (812),
The circuit configuration consisting of (814) and the like is the same as that of the printed wiring board (607) in FIG.

In addition, by reducing the dimensions of the printed circuit board in the direction of the electrode lines,
In order to construct a smaller electrostatic recording head, a circuit configuration as shown in FIG. 9 may be used in which the number of unit rows of electrode line connecting lands is equal to the number of recording electrodes in one electrode group, that is, -mK-. .

In the figure, the electrode wire connection lands (911) have a circuit configuration in which every other column is commonly connected by a conductor (912). Terminals (815) and (915
) are used for electrical connection with the rigid printed circuit board (710) having connection lands and plugs for the control V-line electrode wiring, and are arranged in the same number at opposing positions. They have terminals of the same shape, and electrical continuity is achieved by contacting them with each other, joining them with a conductive adhesive, or joining them by soldering. The purpose of using a flexible printed circuit board in this way is to facilitate manufacturing, which will be explained next.

FIG. 10 is a diagram showing an example of an apparatus for manufacturing the electrostatic recording head shown in FIG. 7. (1010) is the same pitch as the arrangement pitch of recording electrodes on the circumferential surface, for example 0.125+
Diameter 10 (1011) with thread grooves (1011) formed with n pitches
It is a metal column or cylinder (hereinafter referred to as a wire-wound drum) with a length of about 1 m, and the outer periphery has a slightly deep straight groove (1012
) and shallow straight grooves (1013) are formed separated by about 1800 mm. The winding drum (1010) has shafts at both ends, and is driven to rotate in the direction of the arrow by a power source (not shown). (1020) has thread grooves (102) on the circumferential surface at the same pitch as the winding drum (1010).
The winding drum (
1010) in the direction of the arrow.

(1031) and (1032) are electrode wires (
1040) and is rotatably supported.

(1OSO) is an insulating film removing device that removes the insulating film from a predetermined portion and length of an electrode wire while running it. An example is shown in FIG. 11. Fig. 11 shows a device that removes the insulation film by burning it out using a small torch, in which (1101) is a small flame, and a mixed gas of oxygen and hydrogen is ejected from a nozzle (1102) with a small inner diameter. Obtained by burning. (1103) is a small diameter pipe that guides the mixed gas, and a rotary lever (1104)
) A bushing (110) fixed to an operating lever (1106) rotatably supported by a pin (1105) provided in
7) is fitted and fixed. Rotating lever (1104)
has a one-turn clutch (1108) and a pulley (110) on the same axis.
9), and is intermittently rotationally driven by a power source (not shown). Moreover, one side of fi (1103) is a sliding bush (
1112) and is slidably supported by a rubber tube (1113) connected thereto and supplied with a mixed gas from an oxygen and hydrogen gas generator (not shown).

Next, an insulating film removing device (10
The operation of step 50) will be explained with reference to FIG.

The flame (1101) before starting the insulation film removal operation is at the lowest point of its locus of motion (1114) as shown in the figure, and the electrode wire (1115) from which the insulation film is to be removed is exposed to the flame at a predetermined speed. It is traveling in the direction of the arrow while maintaining a predetermined angle smaller than 90° with the motion trajectory (1114). The pulley (1109) is rotated by being powered by a belt or chain from a power source (not shown). However, when the one-rotation clutch (1108) is triggered and connected at a predetermined timing, the rotation lever (1108) is connected.
104) rotates once. At this time, the lower end of the tube (1103) does not slide within the sliding bushing (1112) but swings laterally together with the swinging lever (1111), so the upper end portion moves along with the operating lever (1106) and the bushing (1107). Performs an elliptical motion. Therefore, the flame (1101) emitted from the nozzle (1102) moves in the direction of the arrow along a substantially elliptical locus shown as (1114). The upper part is a nearly straight line that crosses the electrode 1 (1115) at an angle of 00, and the insulating film is burned off and removed. The angle 6 between the flame motion speed and the electrode wire is appropriately selected so that the electrode wire itself does not melt and the insulating film is removed over a predetermined length.

Returning to FIG. 10, (1060) is a tension control mechanism for the electrode wire, for example, which brakes the rotation of a drum around which the electrode wire is wound several times with a constant torque using a hysteresis brake. on the winding drum (1010). Note that this tension control mechanism (106
0) and the insulation film removing device (1050) and the two wire guides (1030) are connected to the feed screw (1070).
By rotating the winding drum (1010) by a power source (not shown), the winding drum (1010) is rotated in synchronization with the rotation of the winding drum (1010).
010) is placed on a table (1080) supported so as to be movable in a direction parallel to the longitudinal direction.

(1033), (1034), and (1035) are wire guides used for guiding the continuous electrode wire (1040), such as changing direction, and are rotatably supported. (1036) is rotatably supported by a buffer lever (1038) which is swingably supported by a buffer roll using a pin (1037) as a fulcrum, and the continuous electrode wire (1040) is supported by a tension spring (1039). ) Adjust the tension applied to the

(1090) is a wire spool which is rotatably supported and continuously supplies electrode 1 (1040).

Next, a procedure for manufacturing the electrostatic recording head shown in FIG. 7 using the apparatus shown in FIG. 10 whose structure has been explained above will be described.

First, prior to arranging the electrode wires, the control electrode row that is to form one row of the two rows of control electrodes that are arranged sandwiching the recording electrodes (701) shown in FIG. 7 is placed on a winding drum (1010).
In addition, as shown in FIG. 8 or 9, the land for electrode wire connection (811), (
911), a wire-wound drum (1010), which is a flexible printed circuit board, is coated with a conductive adhesive, such as Evokin resin containing a silver filler that is slightly fluid at room temperature, to a predetermined thickness by any means such as screen printing. The right hand is fixed in the position. As shown in FIG. 12, the control electrode array consists of a prismatic section (1211) with a cross section of predetermined dimensions and a thin (small cross-sectional area) conducting wire section (121) connected to the prismatic section (1211).
2) A small flat part (1
A control electrode unit (1210) consisting of (213) is manufactured by, for example, a cold heading method using brass wire or phosphor bronze wire, and this is formed into a flat plate (1210) at one end surface of the prismatic portion.
1220), a predetermined number of control electrodes are joined or bonded so as to be equal to the arrangement pitch of the control electrodes. This is done by cutting the broken line part after epoxy resin casting, which will be described later.
Separate and independent as a control electrode.

Now, the electrode wire (1040) is connected to the wire spool (1090
), the wire guide (1035), (103
4), buffer roll (1036), and wire guide (103)
3), the tension control mechanism (1060), the insulation film removal device (1050) and the wire guide (1031)
1032) and one end is fixed near the thread groove (1011) of the winding drum (loto) via the guide screw (1020). In this state, rotate the winding drum (1010) and guide screw (1020) at the same speed in the direction of the arrow,
Move the table in sync with this. The insulation film removing device (1050) removes the wire every time the winding drum (1010) rotates.
Connection land (811) of the flexible printed circuit board
) and (911) are timed so that the portion of the electrode wire (1040) from which the insulation film has been removed comes into contact with the electrode wire (1040). Thus, a constant tension is applied by the tension control mechanism (1060).
The wound electrode wire (1040) has its insulating film removed at a predetermined position 1H, is guided by a guide screw (1020), and is wound in a thread groove (1011) of a winding drum (1010). During this winding process, the electrode wire (10
40) are each connected to a flexible printed circuit board, and this situation will be explained in detail based on FIG. , (1305).

(1311) and (1312) are electrode wires, lands for connecting the electrode wires, and conductors for matrix wiring the lands, respectively. The electrode wires (1305) wound around the winding drum (1010) are arranged at a pitch p equal to the arrangement of the recording electrodes, as described above, and are connected to the regularly arranged electrode wires of the flexible printed circuit board (1307). It intersects with the land (1311). At this time, the electrode 1 (1305) is
), the insulating film is removed one location at a time to match the electrode wire connection land, as shown in the figure. That is, the first electrode wire has the insulating film removed corresponding to the land ■, and the second electrode wire is separated by a distance #q from the part of the first electrode wire from which the insulation film has been removed in the direction of the electrode wire. The insulating film is removed, and this coincides with the land ■, which is also separated by q. These lands ensure that the electrode wires to be connected are always located in the center (they are arranged in a staggered manner by a distance p equal to the arrangement pitch of the recording electrodes. As mentioned earlier, these connection lands (1311) are The conductive adhesive is applied to the electrode wire from which the insulating film has been removed, and after heating and curing, the electrode wire is not only coated with a conductive adhesive but also securely fixed mechanically. Since these have an insulating film, electrical insulation is maintained.

When the winding work is completed to construct all of the recording electrodes (701) of the electrostatic recording head shown in FIG.
0) and the table (1080) and the operation of the insulation film removal device (1050), the electrode wire (1040) stops.
) and fix the rear end on the winding drum. After that, the winding drum (1010) was removed from the apparatus shown in Fig. 10, and casting molds having grooves of respective depths were installed opposite the deep straight grooves (1ox2) and the shallow straight grooves (1013). Epoxy resin is poured to form an electrode holder (703) shown in FIG. 7 in the deep straight groove part and an electrode wire end holder (717) in the shallow straight groove part. At this time, the casting mold facing the deep straight groove (1013) has the first
A row of control electrodes as shown in Figure 2 is used pre-installed in place to form the other row of control electrodes in the same way as was done in the deep straight groove (1012) before the winding operation mentioned previously. Ru.

After casting, the winding drum (1010) is heated in a furnace at a predetermined temperature for a predetermined period of time to harden the electrode wire and control electrode, and the conductive wire coated on the electrode wire connection land of the flexible printed circuit board. The adhesive also hardens to fix the electrode wires, and electrical connections are made with the corresponding electrode wires. After that, the unnecessary part of the electrode wire is cut off, the casting mold and the winding drum are removed, and then the electrode holder (
703) and the electrode wire end holder (717) are machined to a predetermined size. The electrode wire end holder (717) is then coated with an insulating material such as resin on the surface where the cross section of the electrode powder is exposed, so that the end of the electrode wire opposite the recording electrode is completely insulated and buried. A flexible printed circuit board (
707) further includes a rigid printed circuit board (710) having a land for connecting the lead wires of the control electrode (702), a drive circuit (not shown) for each electrode, and a plug part (708) used for connection. They are integrated by soldering or adhesion using conductive adhesive. After that, a lead wire (709) is passed between the flat part of the control electrode (Fig. 12, ]213) and the rigid printed circuit board (710),
Soldering connections are made to obtain an electrostatic recording head as shown in FIG. Although this is not shown, the electrode holder (7
03) and a rigid printed circuit board (710) are fixed with metal fittings and covered with a cover, and used by being incorporated into an electrostatic recording device such as a facsimile.

As explained above, according to the method of manufacturing an electrostatic recording head of the present invention, control electrode units having a prismatic portion at at least one end are arranged in a flat plate, joined or bonded, and then resin molded. Compared to the conventional method of forming a control electrode member by cutting a square piece into 7 slices, the number of man-hours is significantly reduced, and a stable and stable recording head can be obtained. In addition, if the control electrode unit has a lead wire connection part in addition to the prismatic part, the lead wire can be connected in that direction of the lead wire connection part extending from the prismatic part. - Connect the lead wire perpendicular to the flat surface. It is extremely easy to connect compared to other devices.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a same-plane control type electrostatic recording head;
Figure 2 is an electrode configuration diagram of the same-plane control type electrostatic recording head, Figure 3 is a diagram showing the potential distribution of the electrostatic recording paper at the end of the control electrode, and Figure 4 is a diagram showing the same-plane control type electrostatic recording head. FIG. 5 is a diagram showing a conventional example of the structure of a recording head, FIG. 5 is a diagram showing an example of a new electrostatic recording head, and FIG. 6 is an example of a printed wiring board used in the electrostatic recording head shown in FIG. 7 is a diagram showing another example of the new electrostatic recording head, FIG. 8 is a diagram showing an example of a flexible printed circuit board used in the other example, and FIG. 9 is a diagram showing an example of a flexible printed circuit board. FIG. 10 is a diagram showing an embodiment of the electrostatic recording head manufacturing apparatus of the present invention, FIG. The figure is a perspective view showing an example of a control electrode used in the method of manufacturing an electrostatic recording head of the present invention, and FIG.
FIG. 14, an enlarged detailed view of a flexible printed circuit board for explaining the connection of one pole wire, is a diagram showing an example of a conventional control electrode member. 101.201,401,501,701... Recording electrode, 102,202,302.402.502,70
2,1210...control electrode, 103,403,50
3,703・@φ・electrode holder, 104,304...
・Electrostatic recording paper, 405, 505, 705, 1040, 1
115.1305...electrode wire, 407, 507.
607.710... Rigid printed circuit board, 707
, 807, 907, 1307-...Flexible printed circuit board, 611,811.911,1311...Land for electrode wire connection, 717...Electrode wire termination holder, 1010...Winding drum , 1050--Insulating film removal device, 1060--Tension control mechanism, 109
0... Electrode wire spool.

Claims (1)

[Claims] After arranging the prismatic portions of a control electrode unit having a prismatic portion at least one end on a flat plate and bonding or gluing them together, resin molding is performed integrally with the electrode wires constituting the recording electrode, and then the resin, the flat plate, and the control electrode unit are molded in resin. A method of manufacturing an electrostatic recording head, characterized in that a control electrode and a recording electrode are formed on the same plane by cutting a part of a prismatic portion of an electrode unit and an electrode wire.