JPH03104651A - Recorder - Google Patents

Abstract

PURPOSE:To enable low voltage drive, high speed recording, miniaturization, and making cost low to be realized by a method wherein gas is generated by electrolyzing an electrolyte contained in ink with a pair of electrodes and further this gas is exploded by discharge to discharge the ink from an electrolytic chamber by utilizing a shock wave in explosion. CONSTITUTION:An electrolytic chamber 13 and an inside of a nozzle 14 are filled with ink 11 from an ink tank 15. Then, by application of signal output voltage Vin from a signal generator 17, an electrolyte contained in the ink 11 in contact with respective surface of an electrode 12a and an electrode 12b is electrolyzed, and bubbles 20a, 20b are generated on the electrode surface part. An ink projected part 21 is generated from the nozzle 14 by this volumetric expansion. Further, the bubbles 20a, 20b are generated uniformly around the electrodes. Two bubbles are mixed and besides, the ink in contact with the electrodes 12a, 12b disappear. Then, electrolysis comes not to be performed. Spark discharge 22 occurs in a mixture gas consisting of the bubbles 20a, 20b, and the ink 11 is discharged from the nozzle 14 by a shock wave at that time to generate a drop-like flying ink 23. This flying ink is made to stick to an image receiving material to perform recording.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an inkjet recording device that causes a discharge explosion of gas generated by electrolyzing an electrolytic solution and ejects ink using a shock wave from the explosion. 7 shows a cross-sectional diagram of a conventional ink-on-demand system in which ink is ejected from a nozzle by applying pressure only when necessary for recording. In FIG. Even though it is supplied through the supply path 103 and fills the displacement amplification chamber 104 and nozzle 105, the piezoelectric element 1o6 is mechanically deformed by the electric signal from the high voltage generator 107, and is deformed inside or outside the displacement amplification chamber 104. .When deformed inward, the displacement amplification chamber].
The internal pressure of 0 4 increases and ink +0 from nozzle 105
1 is a jet recording apparatus that records by adhering this flying ink 108 to an image receptor (not shown). Such an inkjet recording apparatus is already known.

Problems to be Solved by the Invention However, conventional recording devices using piezoelectric elements have the following problems.

- The voltage applied to the piezoelectric element is a high voltage of more than 100 volts. This poses problems in terms of safety, drive circuit design, and cost.

・Deformation of piezoelectric element 1 and above Normally, at 100-odd volts, at most a few μ
Therefore, it is necessary to make the pressure chamber larger so that the displacement concentrates on the nozzle side. This makes it difficult to achieve both high-density recording and multi-nozzle design. However, there are problems in terms of high-speed recording and cost, but the present invention takes into consideration these points. Low-voltage drive track that utilizes discharge explosion of gas generated by electrolysis. Inkjet recording that enables high-speed recording and miniaturization. Low cost and E. The purpose is to provide equipment.

Means for Solving the Problems A recording device according to the present invention includes a decomposition chamber in which ink containing an electrolyte and a pair of electrodes are provided, means for supplying the ink to the decomposition chamber, and a signal voltage applied to the electrodes. a signal generating means for applying l. ,,This is a recording apparatus characterized in that the signal voltage is applied to the electrodes to generate gas by electrolysis of ink, and to cause this gas to emit a discharge lamp.

Further, in the recording device of the present invention, a combination of an electrolysis signal voltage that generates gas by electrolysis around a pair of electrodes of a signal generating means bar, and a discharge signal voltage that causes a discharge explosion of the gas generated by this electrolysis. The present invention applies a signal voltage to a pair of electrodes.The present invention has the above-described structure. This method uses a discharge explosion of gas and uses the shock wave from the explosion to expel ink from the decomposition chamber, and this expelled ink is deposited on the surface of the receiving paper for recording. By containing colorants such as dyes or pigments, colored recording can be made on the image-receiving paper.For example, the voltage required to generate hydrogen and oxygen by electrolysis of water is only about 2V; Although gas can be generated by decomposition, the voltage applied between the electrodes causes this mixture of gases to explode due to discharge.
As the hydrogen and oxygen return to their original state, the shock wave generated at this time allows ink to be ejected from the nozzle.
The applied voltage required for this discharge explosion (for example, even if the distance between the generated gas is 10 μm and the voltage is as low as about 30 V), if the distance between a pair of electrodes is 10 μm, applying a voltage of about 30 V will increase the voltage around both electrodes. Gases (hydrogen and oxygen) are generated, and these gases are mixed.The space between the electrodes is filled with gas.At this time, the applied voltage creates a spark discharge, causing a discharge explosion.The ink inside the decomposition chamber is discharged. The shock wave generated by the explosion causes the generated gas to be discharged from the decomposition chamber, but the gas returns to liquid and its volume decreases, creating a negative pressure inside the decomposition chamber, which quickly supplies ink and returns to its original state. Even if the operation is repeated, this phenomenon of electrolysis is such that when a voltage is applied, charge moves on the electrode surface and gas is immediately generated.It responds well to the signal voltage and can generate gas quickly. In addition, as mentioned above, the voltage applied to the discharge explosion can be reduced by reducing the distance between the electrodes, and the thinner the generated gas is, the lower the voltage can be driven. Although high-speed recording is possible, all the gas generated by electrolysis returns to its original liquid (water in the above example) through the discharge explosion, and no excess is generated inside the decomposition chamber.

Further j. , a decomposition chamber in which ink, an electrolytic solution, and a pair of electrodes are provided; a nozzle for discharging the ink; a medium for transmitting pressure changes in the decomposition chamber to the inside of the nozzle; By having a structure including a supplying means, a 1'-stage for supplying the electrolytic solution to the decomposition chamber, and a signal generation means for applying a signal voltage to the pair of electrodes, the electrolytic solution is kept in the decomposition chamber. Since only electrolyte is present around the electrode, the efficiency of electrolysis is improved and the recording sensitivity is improved. In addition, the shock wave generated by the electrolysis of the electrolyte and its discharge explosion can be transmitted to the ink inside the nozzle via a medium that transmits pressure. The structure of these recording devices (tomo) As mentioned above, it is only necessary to place two electrodes inside the decomposition chamber, which makes it possible to make the recording device smaller and lower in cost.However, like the signal voltage mentioned above, the discharge voltage When electrolysis is performed, sometimes discharge occurs between the electrodes without electrolysis. If this occurs, the ink ejection will be different and the recorded image quality will deteriorate. Therefore, avoid this and maintain stable operation. In order to perform this, in the present invention (in addition, the signal voltages to be applied to a pair of electrodes are selected: an electrolysis signal voltage that generates gas by electrolysis around the pair of electrodes, and a discharge signal that causes a discharge explosion of the gas generated by this electrolysis). In combination with the voltage, the application of this signal voltage (first, the electrolysis signal is applied at a lower voltage than the discharge signal voltage, causing gas to be generated around the electrode, and then the discharge signal voltage is applied. If the electrolysis signal is set low enough to prevent discharge between the electrodes, only electrolysis will occur (\ Therefore, electrolysis will always occur and then a discharge explosion will occur.
The ink ejection becomes stable and the recorded image quality is improved.Furthermore, by configuring this electrolytic signal from a combination of signal voltages with reversed polarities for a pair of electrodes, the ink is ejected by electrolysis around both electrodes. A mixture of gases is generated at the electric shield and the negative electrode. Therefore, the mixed gas can be generated around each electrode without filling the space between the electrodes with the mixed gas, so that electrolysis and discharge explosion can be generated respectively around the two electrodes. The electrolyte in the present invention is composed of a solvent and an electrolyte that is dissolved in the solvent and at least partially becomes ions. Embodiment 1 FIG. 1 shows a cross-sectional diagram of a recording apparatus according to a first embodiment of the present invention, and the operation during recording is shown in two stages. is an ink containing electrolyte and colorant.
12a(b) is a pair of electric currents K that electrolyzes the ink l1.
13, electrodes 12a (b) are arranged on the wall surface, and ink 1l
The decomposition chamber 14, which can be filled with ink, is a nozzle which discharges 1 liter of ink into the atmosphere, 15 is an ink tank storing ink 11, and 16 is the decomposition chamber 13 and the nozzle 1.
17 is a signal generator for applying a signal voltage to the electrodes 12a (b); FIG. A part of the structure of the signal generator 17 and the signal oscillator 17 shown in FIG.
As shown in Figure 2, the signal output pattern applied to the pair of electrodes 12a and 12b from the signal generator 17A outputs the voltage Vin when the signal is input L, and outputs the voltage Vin when the OFF signal is input. of the pulse oscillation circuit 18 by delaying the output of the pulse oscillation circuit 18 by PW in time.
It includes a delay circuit 19 which inputs the f signal. This signal oscillator 17 generates a signal output pattern as shown in FIG.
In the following procedure, first, as shown in FIG. 1(a), the ink is passed through the ink supply path 16 from the ink tank 15 to the decomposition chamber 13 and the nozzle. Then, by applying the signal output voltage Vin from the signal generator l7, the electrode 12a and the electrode 1 are filled with 1 liter of ink.
The electrolytic solution contained in the ink 1l that is in contact with the surface of each electrode 2b is electrolyzed to produce bubbles 20a and 20b on the electrode surface, and due to this volumetric expansion, an ink convex portion 2l is produced from the nozzle l4. is regenerated uniformly around the electrode. As the two bubbles mix, the electrode 12a,
There is no more ink in contact with the electrode 12b, and electrolysis is no longer possible.a In this state, the voltage remains applied, so
A spark discharge 22 occurs in the gas mixture consisting of bubbles 20a and 20b, and the shock wave at this time causes 1 liter of ink to be ejected from the nozzle 14, producing drop-shaped flying ink 23 as shown in Figure 1(b). Recording is performed by making this flying ink 23 adhere to an image receptor (not shown).

1. After the bubbles 20a and 20b explode due to the spark discharge 21 and return to liquid, the ink l1 is replenished from the ink supply path 16 into the nozzle 14 and the decomposition chamber 13, returning to the initial state, and the above process is repeated. When all the gas is not annihilated by the discharge explosion,
The above can be repeated by discharging the ink together with the ink l1 to the outside of the decomposition chamber.
lct. Select a non-corrosive electrolyte, S
% For example, Nikkeno K Hakukyo ffi! ! ! iron,
Graphite or the like can be used, and the electrodes 12a and 12b
The material of the ink may be different from the electrolytic coloring material and the additives.The coloring material may be made of various dyes or pigments.Also, the soluble binder, e.g. polyethylene glycol, may be used. < Polyvinyl alcohol) I < Water-soluble resin such as starch Surfactants and the like can be mixed as additives to improve surface tension or as a dispersant for the material. Select a solvent that dissolves the electrolyte (for example, sodium hydroxide, potassium hydroxide, sulfuric acid, sodium chloride, etc.) as a solute (for example, sodium hydroxide, potassium hydroxide, sulfuric acid, sodium chloride, etc.), and as a solvent (for example,
& methanol) k You can choose acetonitrile, etc. Ink 11 You can also choose a liquid other than this electrolyte, such as acetone, methyl ether ketone, etc. (1 As ink 11, oil-based droplets containing coloring material and binder) It is also possible to use an emulsion ink in which the ink 11 is dispersed in an electrolytic solution.However, if the ink set 11 or the above-mentioned various sets or combinations are used, it will explode with a spark discharge 22 (electrolysis using electrodes 12a and 12b). The wall material forming the L nozzle 14, the ink supply path 16, and the ink tank 15 must be selected so that gas can be generated from both of them.The material is corrosion resistant to ink, such as Contains quartz glass and ceramics such as alumina
Various materials can be used, such as brass, metal such as aluminum, hardening resin such as epoxy resin, and plastic resin such as acrylic resin.
Among the various materials mentioned above, at least the inner wall of the decomposition chamber 13 may be made of quartz glass or an insulating material such as silicon oxide. In this embodiment, the response is fast, high-speed recording is possible, and only a pair of electrodes 12a and 12b (top) are required to be placed inside the decomposition chamber 13, making it possible to reduce the size and cost of the recording device. Water to ink 1: 20 weight removed Sodium hydroxide = 5 weight Isobrobyl alcohol: 5 weight Cyan pigment: Use a mixture consisting of 5 parts by weight 1. X. Use nickel as an electrode 1. X. Signal generator I7 was driven with a pulse width (IKHz, Pw: 0.4rns). Distance between electrodes = 15 μm. Cyan recording of 10 dots/mm was possible on high-quality paper at a low voltage of 30 V applied voltage. Under the recording conditions of this embodiment, when the voltage Vin applied to the pulse of the signal generator 17 was set to 10 V or less, 5 0 0
The response of the flying ink was on the order of I−{ Using a recording device in which the inner wall of the decomposition chamber 13 is made of quartz glass, the recording was observed under the above-mentioned recording conditions. It was confirmed that when the applied voltage was increased from IOV to 30V in this state, the Kyosaka bubbles 20a and 20b disappeared when a spark was generated. ('!, The gas generated by electrolysis is discharged and exploded, and the resulting shock wave is utilized. Although the decomposition chamber may be small and it is easy to use multiple nozzles, it is therefore possible to use this multi-head to achieve even higher speeds. Next, FIG. 3 shows a cross-sectional view of a recording device according to a second embodiment of the present invention.
1 is an ink containing an electrolyte and a coloring material; 32a (b) is a pair of electric grinders for electrolyzing the ink 31; 33 is an electrode 32 on the wall surface;
The disassembly turtle 34 can be filled with 3 liters of ink. The nozzle 35 is the ink tank 3 that stores the ink 32.
6 is an ink tank at least in the nozzle 34;] An ink supply factory 717 for filling 3 liters of ink from 5 is an ink tank in the nozzle 34;
Applying a signal voltage to a(b):-
Furthermore, in this structure, even though the nozzle 3l and the decomposition chamber 33 are isolated by the separation membrane 38 that can pass at least the electrolyte contained in the CL ink i1, the signal in the embodiment of FIG. 3 is shown in FIG. 4(a). Generator 37
As shown in FIG. 4, a part of the structure of the signal generator 378 and a signal voltage pattern applied from the signal oscillator 37 to the pair of electrodes 32a and 32b are shown in FIG. 4(b).
;! , when the on signal is input, the electrolysis signal voltage V20 is output.
When the ON signal is input, the decomposition signal oscillation circuit 39 inverts the polarity with respect to the electrolysis signal voltage V20 and outputs the discharge signal voltage V21 (>V2O) LA off
The discharge signal oscillation circuit 40 which changes the output voltage to OV by inputting a signal and the output of the decomposition signal oscillation circuit 39 are temporally set to Pw.
A delay circuit 41 delays the off signal of the decomposition signal oscillation circuit 39 by 2Q and inputs it to the discharge signal oscillation circuit 40, and the output of the discharge signal oscillation circuit 40 is temporally P
A delay circuit 42 and a decomposition signal oscillation circuit 3 are used to input the off signal of the discharge signal oscillation circuit 40 with a delay of w21.
OR circuit 4 outputting the OR of 9 and discharge signal oscillation circuit 40
This signal oscillator 37 generates a signal pattern as shown in FIG.
20), the discharge signal voltage V21 (pulse width Pw21
) is applied with opposite polarity (friend). First, 3 liters of ink is filled into the nozzle 34 from the ink tank 35 through the ink supply path 36. , even if the decomposition chamber 33 is filled with the liquid 44 in the decomposition chamber mixed with at least the electrolyte, the electrolysis signal voltage V20 from the signal generator 37 has a pulse width pw.
The electrolytic solution contained in the liquid 39 in the decomposition chamber that is applied at 20 and in contact with the surfaces of the electrodes 32a and 32b electrolyzes to generate bubbles 45a and 45b on the electrode surfaces, and this volumetric expansion causes ink to flow out from the nozzle 34. Since the discharge signal voltage V21 is applied with the opposite polarity to the electrolysis signal voltage V20, a part of the electrolytic solution is further electrolyzed by the discharge signal voltage V21, and bubbles 45a and 4 are generated.
5b becomes a mixed gas, and a spark discharge 47 is generated around each electrode. Due to the shock wave at this time, ink 31 is ejected from the nozzle 34, producing drop-shaped flying ink (not shown). Recording is performed by depositing ink on an image receptor (not shown). Moreover, after the bubbles 45a and 45b explode and return to liquid form due to the spark discharge 47, the ink 31 is replenished from the ink supply path 36 into the nozzle 34 and the decomposition chamber 33, returning to the initial state, and the above-mentioned process is repeated. At this time, if all the gas does not disappear due to the discharge explosion, k
By discharging the ink 31 into the atmosphere, the above can be repeated, and the ink 31 is assembled and the wall material 1 that makes up the decomposition chamber 33, the nozzle 34, the ink supply path 36, the ink tank 35, etc.
The separation membrane 38 may be made of a material that allows at least the electrolyte contained in the ink 31 and the gas generated by electrolysis to pass through. 38 (For example, Kinpu Ceramikyu) Polyethylene terephthalate fibers are effective in removing particulate matter contained in ink, such as those with a porous shape made of polymers or those with a mesh structure made of various materials. It is an ultra-fine fiber membrane created by the company, which allows oil-based materials to pass through but does not allow water-based materials to pass through. If an ultrafine fiber membrane made of polyethylene terephthalate fibers is used as the separation membrane 38, which allows oil-based materials to pass through but not aqueous materials, it is possible to fill the decomposition chamber 33 almost exclusively with the electrolyte. For example, if a porous polymer with a thickness of about 10 μm is used as the separation lI [38], the same method as described above can be used. In this embodiment, the interior of the decomposition chamber 33 can be filled almost only with the electrolyte (as in the above-mentioned embodiment shown in Fig. 1).
This is an inkjet recording device that uses electrolysis, and is capable of low-voltage drive, high-speed recording, and low-cost low-volume monitoring.Furthermore, the separation membrane 38 allows the liquid 39 in the decomposition chamber, which has a larger proportion of electrolyte than the ink 31, to be used. A space that can fill the decomposition chamber. For example, excess coloring material or additives contained in the ink 31 separated by the separation membrane 38 will not inhibit electrolysis, and the electrolysis can be performed efficiently. Electrode 32a and electrode 32b This makes it difficult for solid matter other than gas to form on the surface of each electrode.The life of the recording device is further improved compared to the embodiment shown in Figure 1.In this example, the electrolysis signal and the discharge signal are of opposite polarity. Iruta eight electrodes 12a, 12
b The gas generated in the peripheral area can be made into a mixed gas, so there is no need to make the distance between the electrodes very small, and the arrangement of the electrodes is easier than in the structure described in the embodiment of FIG. In this example, the electrolysis voltage and the discharge voltage are chosen to have opposite polarities.As shown in the example in Figure 1, the distance between the electrodes is reduced. In a recording device in which the electrolytic signal and the discharge signal have the same polarity, they may be applied between the electrodes. Graphite: A mixture consisting of 5 parts by weight is used.A polycarbonate membrane with a thickness of about 10 μm (Nyukuribore Micromembrane Filter manufactured by Nomura Microscience Co., Ltd.) is used as the separation membrane 38. As an electrode. Using nickel, the signal generator 37 is driven with a pulse width (50Hz, Pw20: 0.5ms, Pw21
: 0. The interior of the decomposition chamber 33 can be filled with almost only electrolyte, and with low voltages such as electrolysis signal voltage V20: IOV and discharge signal voltage V21: 30V, 1O dots/mm can be produced on the surface of high-quality paper. A recording device in which the inner wall of the decomposition chamber 33 was made of quartz glass was used to perform cyan recording. X. When recording was observed under the above-mentioned recording conditions with the discharge signal voltage V2m as IOV, bubbles 32a, 3
2b disappears unless it passes through the separation membrane 38 and exits the nozzle 34. It is confirmed that the ink 3l is not vapor but a gas decomposed by electrolysis. 1 shows a cross-sectional structural diagram of a recording device in an example.

In FIG. 5, 51m is an ink containing a coloring material, 5fn is an electrolytic electrolyte that can be electrolyzed, a 52a (b) is a pair of electrodes that electrolyze an electrolytic solution 51n, and 53 is a wall electrode 52a (b).
A decomposition chamber where the ink 51 can be placed and filled with the ink 51.
54 is the nozzle/l which is the part that spits out 5 liters of ink.
z, 55rn is an ink tank storing ink 51m, 55n is an electrolyte tank storing electrolyte 51n, and 56m is an ink tank 55 in at least the nozzle 54.
The ink supply line 56n for filling the ink 51m from the electrolyte tank 55 at least on the surface of the electrode 52a (b)
The electrolytic solution supply line 57 is a signal generator that applies a signal voltage to the electrodes 52a (b). Although the ink 51m and the electrolytic solution 51n do not come into contact with each other in the decomposition chamber 53 due to the static wall 58 and are separated from each other by the gaseous medium 59, the signal generator 57 in the embodiment of FIG. 5 is shown in FIG. 6(a).
As shown in FIG. 6(a), a part of the structure of the signal generator 57 and a signal voltage pattern applied from the signal oscillator 57 to the pair of electrodes 52a, 52b are shown in FIG. 6(b). 57i;t. , on signal is input, the voltage V3
0 and -V30 each with a pulse width of Pw30 and an oscillation output L o
Decomposed signal oscillation circuit 6 that stops oscillating when the ff signal is input
0, the voltage V31 is output by inputting the on signal manually, t,, and the discharge signal which changes the output voltage to Ov by inputting the offnu signal ↓j: R oscillation circuit 6l and decomposition signal oscillation circuit 60
The oscillation output I1 is counted and when it reaches a certain number of times, it is output and the decomposition signal 0'! The counter circuit 62 which inputs the off signal of the turn circuit 60 and the input of the discharge signal oscillation circuit 6l, and the output of the discharge signal oscillation circuit 6l are delayed by Pw31 in time to generate the discharge signal oscillation circuit 61. It includes a delay circuit 63 which inputs the off signal of
This signal oscillator 57 generates a signal pattern as shown in FIG.
) to the electrolysis signal voltage V30 and -V30 (each pulse intensity P
w2O) once, and then the discharge signal voltage V31(
Printing was carried out as follows using a printing apparatus with the structure of this example without applying a pulse width pw of 31 m.
At this time, the ink 51m does not necessarily have to be completely filled into the nozzle 54 (next). By applying a signal voltage from the signal generator 57, the electrolytic solution 51n in contact with the surfaces of the electrodes 52a and 52b may be electrolyzed to generate bubbles 65a and 65b on the electrode surfaces.
Due to the volume expansion change of the electrolyte 51n from liquid to gas, the interface 66 of the electrolyte becomes convex toward the nozzle 54, and an ink convex portion 67 is generated from the nozzle 54.Next, the electrolysis signal voltage V30 has a reverse polarity. Therefore, when the discharge signal voltage V31 is applied, a spark discharge 68 is generated around each electrode, and the shock wave at this time When 5 liters of ink is ejected from the nozzle 54, droplets of flying ink (not shown) are produced, and this flying ink is attached to an image receptor (not shown) for recording. In addition, the bubbles 65a and 65b exploded due to the spark discharge 68 and returned to liquid.The ink 51m flows from the ink supply path 56rn.
Further, the electrolytic solution 51n is supplied to the surface of the electrodes 52a (b) from the electrolytic solution supply path 56n to return to the initial state, and even if the above-mentioned process is repeated, the decomposition chamber 53, the nozzle 54, and the ink supply path 56m. The wall material constituting the ink tank 55tn can be made of the same material as that explained in the embodiment of FIG. 1.
Ink supply path 56rrK It is possible to use the same material as the ink tank 55m, but ink 51rni is used.As explained above in the recording principle, it is possible to electrolyze. Although oil-based ink can also be used, the liquid-repellent wall 58 (upper part) is made of a material that has the property of repelling both the ink 51m and the electrolyte 51n.
Silicone, fluororesin, etc. can be applied to the inner wall of the decomposition chamber 53 to form the liquid-repellent wall 58. In this embodiment, electrolysis is carried out in the same manner as in the above-mentioned embodiment shown in FIGS. 1 and 2. This is an inkjet recording device that uses low voltage drive, high speed recording, small volume, light weight, and low cost, and has two additional features. (1) Ink 51m does not need to contain electrolyte Ink 51nn
(2) Only the electrolytic solution 51n comes into contact with the surface of the electrodes 52a and b, and there are no impurities or substances that adhere to the electrode surface, so that electrolysis is performed efficiently and sensitivity is improved. Mr. Su: In this example, ink 51m was Holbein's air port flush ink, electrolytic solution 51n was a mixture of water: 20 parts by weight, sodium hydroxide: 5 parts It, and nickel was used as an electrode. Pulse width drive of signal generator l7 (500Hz, Pw30: 0.2rn
s, Pw31: O. fms)
Electrolysis signal voltage V30: IOV, discharge signal voltage V31
:10 dots/m on the surface of high-quality paper at a low voltage of 30V
In this embodiment, the polarity of the electrolytic signal is reversed during 2Pw30, so that the ratio of the mixed gas generated around both electrodes 52a and 52b is the same. (Hydrogen:Oxygen:=2:l). Therefore, the decomposition chamber 53 is constructed such that more stable ink ejection can be performed than the configuration described in the embodiment shown in FIG. A recording device with a wall made of quartz glass is also used.The discharge signal voltage V31 is set to 1. O
When I lowered the voltage to V and observed the recording under the recording conditions mentioned above.
Even though a discharge explosion does not occur, the volume of the gaseous medium 59 is stable, and it does not disappear even when recording is stopped. This 4th part The gas generated by electrolysis, not the vapor of the ink 51m, is the gaseous medium 59. In the embodiment shown in Fig. 3, the ink supply path from the Makoto ink tank to the ink tank shows a structure in which the electrolyte is filled into the decomposition chamber only from the nozzle side. A liquid with a high electrolyte composition ratio separated from the ink is prepared in advance using a separate separation membrane that does not have a high electrolyte composition ratio, or the separated liquid (with a high electrolyte composition ratio Alternatively, in the embodiment shown in Fig. 3, gas is used as a medium to transmit the pressure when the gas is generated to the ink. It may be a liquid that is insoluble in the electrolyte and ink, or a solid that has rubber elasticity. % Furthermore, the voltage or pulse width of the forward polarity and reverse polarity of the electrolysis signal may be made different. In this example, C'!
．． ．． The force t with which the electrolytic signal is controlled by a single inversion signal may be combined by multiple inversion signals. In the embodiments of FIGS. Although the discharge signal is applied in the present invention, the discharge signal may be applied within the period T2 (or the period T3) (with a certain time delay after the crushing electrolysis signal). The generator (above) may be any generator as long as it generates a signal voltage as described above, and is not limited to the structure described in this embodiment (1). It is also possible to create a recording device that combines the structure of each part such as a decomposition chamber.As explained above, the present invention 41 electrolyte is electrolyzed with a pair of electrodes, and at least one of the gases generated at that time is The recording device C according to the present invention performs recording by causing a discharge explosion to cause ink to fly due to the shock wave.
A device that uses the electrolysis phenomenon and its discharge explosion phenomenon.It has a good response to signal voltage, enables high-speed recording, and only requires the construction of a decomposition chamber with two electrodes in the chamber, making the recording device compact. It is possible to reduce weight, reduce cost, and have great practical effects. Figure 2 (a) shows a partial block of the signal oscillator used in the first embodiment, and Figure 3 (b) shows the signal pattern output by the signal oscillator. Second invention
The cross-sectional structure of the recording device in the embodiment of FIG. 4(a)
A partial block of the signal oscillator used in the first embodiment is
Figure 5(b) shows the signal pattern output by the signal oscillator; Figure 5 shows the cross-sectional structure of the recording device in the third embodiment of the present invention; Figure 6(a) shows the signal pattern used in the first embodiment. Part of the block of the signal oscillator is shown in FIG. 7(b), and the signal pattern output by the signal oscillator is shown in FIG. 1 0 1-inku 1
2 a, 1 2 b, 3 2 a, 3 2
b, 5 2 a, 5 2 b ・-・Denko l3
, 33, 53... decomposer 14, 34, 54, 1 0
5-... Nozzle, 15, 35, 55m% 1
02-Ink Tankyu 16, 36, 564 103
... Ink supply level 17, 37, 57... Signal generation mode 18... Pulse oscillation mode level 19, 41, 42,
63...Delayed port 20a, 20b, 30
a, 30b, 50a, 50b--Kiri 21, 4
6, 6 7--Ink convex lick 22, 47, 68
...Spark discharge 23, io8...Flying inkyu 3
8 minutes! K, 39...Disassembly signal oscillation repeat 40...Discharge signal oscillation repeat 43...OR repeat
44...Liquid suspension in the decomposition chamber 51n...Electrolyte 55n
... Electrolyte tank 58n... Electrolyte supply intake 58.
...Liquid repellency tension 59...Gaseous medium i 66...Electrolyte solution 104...Displacement amplifier 106...Piezoelectric element 107...High voltage generation

Claims (6)

[Claims] (1) A decomposition chamber in which an ink containing an electrolyte and a pair of electrodes are provided, means for supplying the ink to the decomposition chamber, and signal generation means for applying a signal voltage to the electrodes, A recording apparatus characterized in that the signal voltage is applied to the electrode, gas is generated by electrolysis of the ink, and the gas is caused to explode by discharge. (2) a decomposition chamber in which an ink containing an electrolyte and a pair of electrodes are provided; a nozzle communicating with the atmosphere from the decomposition chamber through at least a separation membrane through which the electrolyte passes; and a nozzle in which the ink is supplied. supplying means, and a signal generating means for applying a signal voltage to the electrode, applying the signal voltage to the electrode to generate gas by electrolysis of the electrolytic solution that has passed through the separation membrane, A recording device characterized by causing this gas to explode by discharge. (3) a decomposition chamber in which a pair of electrodes are provided; a nozzle for discharging ink; a medium for transmitting pressure changes in the decomposition chamber to the inside of the nozzle; and means for supplying the ink to the nozzle; means for supplying an electrolytic solution to a decomposition chamber; and a signal generating means for applying a signal voltage to the electrode; the signal voltage is applied to the electrode to generate gas by electrolysis of the electrolytic solution; A recording device characterized by causing a discharge explosion of gas. (4) The recording device according to claim 3, wherein the medium that transmits the pressure change in the decomposition chamber to the inside of the nozzle is gas. (5) Claim 1, characterized in that the signal voltage consists of a combination of an electrolysis signal voltage that electrolyzes the electrolytic solution and a discharge signal voltage that causes a discharge explosion of the gas generated by the electrolysis. , the recording device according to item 2 or item 3. (6) The recording device according to claim 5, wherein the polarity of the electrolytic signal voltage is reversed within the time during which the electrolytic signal voltage is applied.