JP2001301224A - Two row electrode body and method of manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To arrange each electrode in the second row accurately with respect to each electrode in the first row. SOLUTION: The two row electrode body 21 comprises a plurality of electrodes 211b, 212b arranged, at a predetermined interval L, on one side of substrates 211a, 212a, a pair of electrode plates 211, 212 secured between the electrodes 211b, 212b by filling the gap with resin 211d, 212d, and a prepreg 213 (bonding material) for bonding both electrode plates 211, 212 on one side of the substrates 211a, 212a while facing the electrodes 211b, 212b each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing apparatus, and more particularly, to a printing method in which a desired image is formed by solidifying a part of a liquid ink by energization to form a desired image, and the image is transferred to a printing material such as paper for printing. The present invention relates to a two-row electrode body used for solidifying ink by energization in an apparatus and a method of manufacturing the same.

[0002]

2. Description of the Related Art As one type of printing apparatus, a rotating drum having a circumferential surface functioning as a positive electrode, and a predetermined gap arranged in the axial direction of the rotating drum at predetermined intervals are provided on the circumferential surface of the rotary drum. A plurality of negative electrodes facing each other, and the gap between the plurality of negative electrodes and the circumferential surface of the rotary drum is filled with liquid ink by jetting from the recirculation side, and among the plurality of negative electrodes, A negative voltage is applied to a suitably selected negative electrode, and a part of the ink is coagulated and adhered to the circumferential surface of the rotary drum to form a desired image, and the remaining non-coagulated ink is formed on the outlet side of the gap. Is removed from the circumferential surface of the rotating drum, and an image formed on the circumferential surface of the rotating drum is transferred to a printing substrate.
No. 5 discloses this.

[0003]

In this type of printing apparatus, the ink solidified by energization may adhere to the periphery of the negative electrode and cover the surface of the negative electrode. ). In order to solve such an energization failure, a plurality of negative electrodes (a plurality of electrodes aligned at a predetermined interval) are arranged in two rows separated by a predetermined amount in the rotating direction of the rotating drum, and are spaced at regular intervals. And alternately energized. According to this,
It is possible to wash away the ink that has been attached to the periphery of the electrode by the current supply with new ink while the power supply is stopped, and it is possible to perform a long-time continuous printing operation. However, if the arrangement of the electrodes in the second row is displaced in the axial direction and the rotating direction of the rotating drum with respect to the arrangement of the electrodes in the first row, printing unevenness occurs. Therefore, the arrangement of the electrodes is manufactured with high precision. There is a need.

[0004]

SUMMARY OF THE INVENTION The present invention (the invention according to claim 1) has been made to meet the above-mentioned problem, and a plurality of electrodes are arranged on one side of a substrate at predetermined intervals. And a pair of electrode plates formed by filling and solidifying a resin between the respective electrodes, and a joining material for joining the two electrode plates on one side of the substrate with the respective electrodes facing each other. The electrode body has features.

Further, the present invention (the invention according to claim 2)
An electrode forming step of forming a plurality of electrodes at predetermined intervals on one side surface of the substrate, a resin filling step of filling and solidifying a resin between at least the electrodes after the electrode forming step, and a pair of electrode plates after the resin filling step. The method is characterized by a method of manufacturing a two-row electrode body, which comprises a bonding step of heating and pressing through a prepreg in which an uncured resin is impregnated into a substrate so that the electrodes face each other. In this manufacturing method, between the resin filling step and the joining step, an inspection step of inspecting the energization using each of the electrodes as a basic unit, and a cutting and removing step of cutting and removing the basic unit of the energization failure detected in the inspection step It is desirable to provide a process and a unitization process of forming an electrode plate by aligning and joining the base unit to a predetermined number using a fixed frame after the cutting and removing process (the invention according to claim 3).

[0006]

In the two-row electrode body according to the present invention (the invention according to claim 1), both electrode plates are joined using a joining material in a state where the electrodes face each other on one side of the substrate. By doing so, the two electrode plates are integrally joined via the joining material. By the way, in each electrode plate, each electrode provided at predetermined intervals is sealed and solidified in advance with a resin, and the strength of each electrode against external force is secured.
Even when pressure is applied in the thickness direction when the two electrode plates are joined via the joining material, the interval between the electrodes (the interval in the alignment direction) is maintained. Also, there is no damage to the electrodes in the work of cutting and removing defective portions or when aligning a plurality of electrodes.
Therefore, the electrodes arranged in two rows can be opposed to each other with high accuracy and can be manufactured without any defect.

In the method for manufacturing a two-row electrode body according to the present invention (the invention according to claim 2), a two-row electrode body is manufactured through the above-described electrode forming step, resin filling step, and joining step. By the way, at the time of heating and pressurizing in the joining step, although the uncured resin of the prepreg is softened and deformable, the base material of the prepreg (a material for increasing the rigidity of the prepreg) has a high compression rigidity and a pressure of a predetermined value or more. If it does, the molding thickness can be controlled to a predetermined thickness, and since each electrode is encapsulated and solidified with resin in each electrode plate and the spacing in the alignment direction of each electrode is maintained, the base material of the prepreg is By controlling the thickness, resin properties, timing of applying pressure, heating temperature, etc., the distance between the electrodes arranged in two rows (the distance in the alignment direction and the distance in the opposite direction) can be manufactured with high precision. It is possible to

In the method of manufacturing a two-row electrode body according to the present invention, the inspection step, the cutting and removing step, and the unitizing step are provided between the resin filling step and the bonding step. In the invention according to the present invention, waste of resources and wasteful work can be reduced as compared with the case where the energization of each electrode is inspected after the bonding step and defective products are eliminated. Thus, the cost of the product can be reduced. In addition, the inspection process described above,
In each step of the cutting and removing step and the unitizing step, each electrode is fixed in advance with resin, so that each electrode is not damaged.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 schematically shows an electrocoagulation type printing apparatus, which includes a rotating drum 10, a print head 20, a coating apparatus 30, an ink ejecting apparatus 40, an electrolyte supply apparatus 50, a removing apparatus 60, Transfer equipment 7
0 and a cleaning device 80 and the like.

The rotating drum 10 has a circumferential surface grounded and functions as a positive electrode 11, is rotatably supported by a frame (not shown), and is counterclockwise shown by a driving device (not shown). It is designed to be driven to rotate in the direction. The print head 20 is disposed to face the rotating drum 10 with its longitudinal direction being parallel to the axial direction of the rotating drum 10, and includes a two-row electrode body 21 and a holder 22 for supporting the same.

As schematically shown in FIGS. 2 and 3, the two-row electrode body 21 has a pair of electrode plates 211 and 212, a prepreg 213 as a bonding material, and a pair of FRP materials. Fixed frames 214 and 215 are provided.
Each of the electrode plates 211 and 212 is made of a substrate 211a, 21 made of an FRP material (other insulating materials can be used).
2a, a plurality of negative electrodes 211b and 212b having a substantially square cross section (about 30 μm on a side) formed on one side surface of the substrates 211a and 212a at a predetermined interval L (for example, about 60 μm at 400 dpi); A plurality of connectors 211c and 212c are provided on the other side of 212a, and between the negative electrodes 211b and 212b, insulating resins 211d and 212d containing a filler are filled and solidified. In addition, as the filler, one that enhances corrosion resistance and thermal conductivity is preferable, for example, boron nitride, aluminum nitride,
Alumina and the like are preferred.

The holder 22 is formed of an insulating resin in a long shape in the axial direction of the rotary drum 10 and is attached to a frame, and a printed circuit board (not shown) is attached thereto. A data processing circuit for inputting print data representing a print image from an external print data output device 23 and outputting a negative voltage pulse train signal corresponding to the data on the printed circuit board; Negative electrode 211 of the two-column electrode body 21 based on the negative voltage pulse train signal from
Circuit components constituting a drive circuit or the like for driving the b and 212b are assembled, and a connector electrically connected to each connector 211c and 212c of the two-row electrode body 21 via a flat cable or a flexible board is assembled. ing.

The coating device 30 is disposed on the recirculation side of the ink jetting device 40 and is adapted to continuously coat the circumferential surface of the rotating drum 10 with the metal oxide-containing olefin material. As schematically shown in FIG. 4, the ink ejecting apparatus 40 ejects and fills a liquid ink A into a gap between the distal end surface of the negative electrode 211b or 212b and the circumferential surface of the rotating drum 10 from the reciprocating side. is there.

The electrolytic solution supply device 50 is disposed at a predetermined short distance from the two-row electrode body 21 toward the ink ejecting device 30 and has an outlet 51 opening toward the circumferential surface of the rotary drum 10. It has. The outlet 51 allows the electrolyte C (electrolyte containing almost no component solidified by energization) to flow out so that ink does not adhere to the tip of the negative electrode 211b or 212b. The electrolyte C stored in the tank 52 and pumped by the pump 53 is supplied. A communication passage 54 communicating with the outlet 51 is connected to a tank 52 via a control valve 55 for controlling the flow rate of the electrolyte C supplied to the outlet 51, and the excess electrolyte C is supplied to the tank 52. To return to.

The removal device 60 is disposed on the exit side of the print head 20 and has a flexible rubber spatula 61.
The remaining non-coagulated ink is removed from the circumferential surface of the rotating drum 10, and the removed ink can be reused. The transfer device 70 is disposed on the circulation side of the removal device 60, and transfers a desired image solidified and adhered to the circumferential surface of the rotary drum 10 to a printing material B such as paper. A pressure roller 71 that rotates in the direction is provided. The cleaning device 80 is disposed on the circulation side of the transfer device 70, and continuously cleans the circumferential surface of the rotating drum 10.

In the electrocoagulation-type printing apparatus of the present embodiment configured as described above, the coating device 30 rotates the rotating drum 10 in the counterclockwise direction in FIG. And a gap between the rotary drum 10 and the print head 20 is injected and filled with a liquid ink A by an ink jetting device 40. In this state, a negative voltage pulse corresponding to the print data from the print data output device 23 is applied to the negative electrode 211b or 21b.
2b, a coagulated ink A1 is formed on the circumferential surface of the rotating drum 10 functioning as the positive electrode 11 (more precisely, on the coated metal oxide-containing olefin material) in response to the negative voltage pulse. (See FIG. 4). At this time, the electrolyte supply device 50 is connected to the negative electrodes 211b and 212b.
Since the tip of b is covered with the electrolytic solution C, the ink A hardly solidifies on the tip.

Since the removing device 60 removes the ink A on the rotary drum 10 other than the coagulated ink A1, the transfer device 70 operates to remove the print data from the circumferential surface of the rotary drum 10 to the printing object B. Is transferred. Next, the circumferential surface of the rotating drum 10 is cleaned by the cleaning device 80, and the cleaned circumferential surface is used again to print images on the printing substrate B one after another.

In the present embodiment, the application (energization) of the negative voltage pulse to the negative electrode 211b or 212b used for printing is performed, for example, every 100 or 200 times of printing, or every predetermined time. It is set to be performed by switching. For this reason, it is possible to wash out the ink which has been attached to the vicinity of the negative electrode by energization with new ink while energization is stopped, and the cycle is twice as long as when printing is performed using one row of electrodes. Cleaning may be performed, and the frequency of removing solidified ink from the surface of the negative electrodes 211b and 212b and the surrounding area with an elimination device such as a rotating brush may be reduced, and continuous or repeated printing for a long time may be performed. The printing efficiency can be improved.

Further, in this embodiment, the two-row electrode body 21 shown in FIGS. 2 and 3 is formed by the electrode forming step schematically shown in FIG. 5 and the resin filling step schematically shown in FIG. When,
An inspection process in a state schematically shown in FIG. 7, a cutting and removing process schematically shown in FIGS. 7 and 8, a unitizing process schematically shown in FIGS. 9 and 10, and FIG. It is manufactured by sequentially passing through a simulated connector connecting step and a joining step simulated in FIG.

The electrode forming step shown in FIG.
This is a step of forming a plurality of negative electrodes 211b (or 212b) at a predetermined interval L on one side surface of a (or 212a), using a photolithography technique, a plating method, or the like in an ultrafine processing technique such as a semiconductor manufacturing technique. FIG.
Is a step performed after the electrode forming step, and at least the negative electrode 211b (or 212)
The insulating resin 211d (or 212d) is filled and solidified in the space between b). When resin is filled and solidified also on each of the negative electrodes 211b (or 212b) in FIG. 6, it is necessary to control the thickness to increase the accuracy.

The inspection step in the state shown in FIG. 7 is a step of inspecting the energization using each negative electrode 211b (or 212b) as a basic unit.
The continuity of b (or 212b) and the short circuit are inspected, and the basic unit of the conduction failure is detected. The cutting and removing step shown in FIGS. 7 and 8 is a step of cutting and removing a basic unit including a conduction failure portion (marked by X in FIG. 7) detected in the above-described inspection step. The region S (S> L) sandwiched by the above, that is, a basic unit including a portion where conduction is poor (in this case, all electrode circuits connected to one connector 211c or 212c) is cut and removed. Also,
In the cutting and removing step, substantially half of the insulating resin 211d (or 212d) at both left and right ends in FIGS.
(Or 212a) respectively.

The unitization process shown in FIGS. 9 and 10 uses the fixed frame 214 (or 215) on the surface plate 100 to align and join the basic units so as to have a predetermined number, so that the length in the left-right direction is reduced. This is a step of forming an electrode plate 211 (or 212) having a size of, for example, 17 inches. In practice, 8 to 10 electrode plate materials (shown in FIG. 7) are aligned and joined.
At the time of this alignment joining, the interval between the two negative electrodes 211b (or 212b) at the joining portion surrounded by the circle in FIG.
Make sure to align them.

In the connector connecting step shown in FIG. 11, a connector 211c (or 212c) for transmitting a negative voltage pulse train signal to each negative electrode 211b (or 212b) is used.
Is attached to the other side surface of the substrate 211a (or 212a), and can be performed after the resin filling step shown in FIG. In the joining process shown in FIG. 12, the pair of electrode plates 211 and 212 are arranged such that the negative electrodes 211b and 212b face each other, and a woven fabric such as glass fiber (another material is used as a base material to increase the rigidity of the prepreg). Prepreg 21 impregnated with uncured resin.
This is a step of bonding under heat and pressure through the step 3, whereby the distance between the negative electrodes 211b and 212b in the facing direction becomes a predetermined value.

In the two-row electrode body 21 of the present embodiment manufactured as described above, the two electrode plates 211 and 212 are connected to one side of the substrates 211a and 212a by the respective negative electrodes 211b and 212b.
The two electrode plates 211 and 212 are integrally joined via the prepreg 213 by joining using the prepreg 213 in a state where the 212b faces each other. by the way,
In each of the electrode plates 211 and 212, the negative electrodes 211b and 212b aligned at a predetermined interval L are sealed and solidified in advance with insulating resins 211d and 212d, and the intervals between the negative electrodes 211b and 212b (in the alignment direction). Is maintained by the insulating resins 211d and 212d, and the compressive rigidity of the negative electrodes 211b and 212b in the thickness direction is increased by the insulating resins 211d and 212d. Is secured against the external force, the gap between the negative electrodes 211b and 212b (the gap in the alignment direction) even when pressure is applied in the thickness direction when the electrode plates 211 and 212 are joined via the prepreg 213. ) Is retained. Further, also in the operation of cutting and removing a defective portion or when aligning a plurality of electrodes, each of the negative electrodes 211b and 212 is arranged.
b is not damaged. Therefore, the negative electrodes 211b and 212b arranged in two rows can be opposed to each other with high precision and can be manufactured without any defect.

In the method of manufacturing the two-row electrode body 21 described above, the two-row electrode body 21 is manufactured through the above-described electrode forming step, resin filling step, and joining step. By the way, at the time of heating and pressing in the bonding step, the prepreg 21
Although the uncured resin of No. 3 becomes soft and deformable, the base material of the prepreg 213 has a high compression rigidity, and when a pressure equal to or more than a predetermined value is applied, the molding thickness can be controlled to a predetermined thickness. Each of the negative electrodes 211b and 212b of the plates 211 and 212 is
d, each of the negative electrodes 211b, 212b
Is maintained in the alignment direction of the prepreg 21.
3, thickness of base material, resin properties, timing to apply pressure,
By controlling the heating temperature and the like, it is possible to manufacture each interval between the negative electrodes 211b and 212b arranged in two rows (the interval in the alignment direction and the interval in the opposing direction) with high precision. .

In the above-described method for manufacturing the two-row electrode body 21, the inspection step, the cutting and removing step, and the unitizing step are provided between the resin filling step and the bonding step. As compared to a case where the energization of each of the negative electrodes 211b and 212b is inspected later (after the completion of manufacturing) to eliminate defective products, it is possible to reduce waste of resources and unnecessary work. Thus, the cost of the product can be reduced. In each of the above-described inspection step, cutting and removing step, and unitization step, each of the negative electrodes 211b and 212b is
2d, each negative electrode 211b,
It does not damage 212b.

In the above embodiment, the present invention was applied to the two-row electrode body used as the electrode body of the print head 20 used in the electrocoagulation type printing apparatus provided with the electrolyte supply device 50. The present invention can be similarly or appropriately modified and applied to a two-row electrode body used as an electrode body of the print head 20 used in an electrocoagulation type printing apparatus that does not include the supply device 50.

In the above embodiment, each substrate 2
11a and 212a, respectively.
2c, each connector 211c, 212c
The switch (signal output side) that controls the signal input destination is switched on or off, or as a single output side, the connector is connected alternately and energized. An input signal switching device for switching and inputting a signal at predetermined time intervals may be provided as a part of the two-row electrode body.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram schematically showing an embodiment of an electrocoagulation type printing apparatus which can use a two-row electrode body according to the present invention.

FIG. 2 is an enlarged sectional view of the two-row electrode body shown in FIG.

FIG. 3 is a sectional end view of the two-row electrode body shown in FIG. 2, taken along line 3-3.

FIG. 4 is an enlarged view of a print head portion shown in FIG.

FIG. 5 is a process explanatory view showing an electrode forming process of the method for manufacturing the two-row electrode body shown in FIGS. 2 and 3;

FIG. 6 is a process explanatory view showing a resin filling step of the method for manufacturing the two-row electrode body shown in FIGS. 2 and 3;

FIG. 7 is a process explanatory view showing an inspection process and a cutting and removing process of the method for manufacturing the two-row electrode body shown in FIGS. 2 and 3;

8 is a process explanatory diagram showing a cutting and removing process of the method for manufacturing the two-row electrode body shown in FIGS. 2 and 3. FIG.

FIG. 9 is a process explanatory diagram showing a first stage of the unitization process of the method for manufacturing the two-row electrode body shown in FIGS. 2 and 3;

FIG. 10 is a process explanatory view showing the latter half of the unitization process of the method for manufacturing the two-row electrode body shown in FIGS. 2 and 3;

FIG. 11 is a process explanatory view showing a connector connecting process of the method for manufacturing the two-row electrode body shown in FIGS. 2 and 3;

FIG. 12 is a process explanatory view showing a joining process of the method for manufacturing the two-row electrode body shown in FIGS. 2 and 3;

[Explanation of symbols]

10: rotating drum, 11: positive electrode, 20: print head,
21 ... two-row electrode body, 211, 212 ... electrode body, 211
a, 212a: substrate, 211b, 212b: negative electrode, 2
11c, 212c: connector, 211d, 212d: insulating resin, 213: prepreg (joining material), 214, 21
5: fixed frame, 30: coating device, 40: ink ejection device,
50: electrolytic solution supply device, 60: removal device, 70: transfer device, 80: cleaning device, A: ink, B: printed material.

Claims (3)

[Claims] A plurality of electrodes arranged on one side of a substrate at predetermined intervals, and a pair of electrode plates formed by filling and solidifying a resin between the electrodes; A two-row electrode body comprising a bonding material for bonding the electrodes in a state where the electrodes face each other. 2. An electrode forming step of forming a plurality of electrodes at predetermined intervals on one side surface of a substrate, a resin filling step of filling and solidifying a resin between at least the electrodes after the electrode forming step, and a resin filling step after the resin filling step. A bonding step of applying heat and pressure via a prepreg formed by impregnating a base material with an uncured resin so that a pair of electrode plates face each other. 3. The method for manufacturing a two-row electrode body according to claim 2, wherein between the resin filling step and the joining step, an inspection step of inspecting energization is performed using each of the electrodes as a basic unit. A cutting / removing step of cutting and removing the basic unit having the current-carrying failure detected by the unit, and a uniting step of forming an electrode plate by aligning and joining the basic units to a predetermined number using a fixed frame after the cutting / removing step. A method for manufacturing a two-row electrode body, comprising: