KR101521900B1 - Method, mechanism, and device for maintaining inkjet head - Google Patents

Abstract

The present invention relates to a maintenance method, a mechanism, and an apparatus for an ink jet head capable of restoring the discharge performance of ink and performing good application without causing nozzle deviation. A maintenance method for covering a nozzle of an ink jet head with a cap to generate a negative pressure to suck liquid, the maintenance method comprising: a waste liquid tank communicating with the cap and the negative pressure generating means; And an ink reservoir communicating with the ink jet head, liquid switching means for selectively communicating the ink jet head with the low viscosity liquid reservoir or the ink reservoir is provided, the low viscosity liquid reservoir and the ink jet head are communicated with each other, Wherein the ink jet head is filled with a low viscosity liquid, and then the ink reservoir is communicated with the ink jet head to fill the ink jet head with the ink.

Description

TECHNICAL FIELD [0001] The present invention relates to a maintenance method and apparatus for an inkjet head,

The present invention relates to a method of removing ink, ink, ink, and the like of an ink-jet head (hereinafter referred to as " maintenance " The present invention relates to a method, apparatus, and apparatus for carrying out the present invention.

In general, a maintenance mechanism is provided in an inkjet recording apparatus to maintain ink ejection performance. As a conventional maintenance mechanism, after a nozzle surface of an ink jet head is covered with a cap, a negative suction pump is operated to apply a negative pressure suction force to the nozzle surface of the ink jet head to recover waste ink from the ink jet head side Is known.

For example, Japanese Unexamined Patent Publication (Kokai) No. 2000-338993 discloses a cap type cap type inkjet printer comprising a cap covering a nozzle face of an ink jet head, a negative pressure suction pump communicatively connected to an ink discharge port of the cap through a connection tube, And a waste ink tank for recovering the waste ink tank.

The inkjet printer disclosed in Patent Document 2 has a print head having a plurality of nozzles, an opening portion common to a plurality of nozzles of the print head, and a plurality of suction ports, and the openings are brought into close contact with the surfaces of the nozzles to form a closed space A cap for sucking ink from a plurality of nozzles through a plurality of suction ports of the cap, and an ink flow path for connecting the suction port of the cap and the suction pump, The medium is subjected to dot printing, and the opening of the cap is brought into close contact with the nozzle when the power is turned on or when necessary, and the ink is sucked by the suction pump.

Patent Document 3 discloses a technique in which a plurality of suction ports are provided in a suction cap and the opening and closing operations of the valves of the communication passages of the suction ports are controlled so that ink can be appropriately filled in all the channels at the time of initial ink introduction, It is disclosed that air bubbles are effectively removed from the channel near the head end where air bubbles are liable to remain at the time of purging.

[Patent Document 1] Japanese Patent Application Laid-Open No. 1995-81089

[Patent Document 2] Japanese Patent Application Laid-Open No. 1995-304191

[Patent Document 3] Japanese Patent No. 3800855

In the case of an ink containing a solid content such as a pigment, since the viscosity is high and the fluidity of the ink itself is poor, there is a problem that a considerable time is required for charging and a large amount of expensive ink must be consumed for maintenance.

Further, when the inside of the cap is set to negative pressure, if the adhesion between the head surface and the cap is poor, there is a problem in that a sufficient suction force can not be obtained due to mixing of the outside air.

In addition, after the maintenance, when the cap is liberated in a state in which the cap is in a negative pressure, the atmospheric pressure in the cap is abruptly changed, and the ink filled in each nozzle of the head vibrates in accordance with the change, At this time, air is sucked in from each nozzle, and bubbles again enter the head.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a maintenance method, apparatus, and apparatus for an ink jet head capable of solving the above-described technical problems and capable of restoring the ink discharge performance and performing good application without nozzle deviation.

A first aspect of the present invention is a maintenance method for covering a nozzle of an ink jet head with a cap to generate a negative pressure to suck the liquid, the maintenance method comprising: a waste liquid tank communicating with the cap and the negative pressure generating means; Viscosity liquid reservoir portion and the ink jet head, and an ink reservoir portion communicating with the ink-jet head, and a liquid switching means for selectively communicating the ink-jet head with the low viscosity liquid reservoir portion or the ink reservoir portion, In a cap to fill the ink jet head with a low viscosity liquid and then to connect the ink reservoir to the ink jet head to fill the ink jet head with ink.

The second invention is characterized in that, in the first invention, the low viscosity liquid is a solvent of the ink.

A third invention is characterized in that, in the first or second invention, the liquid switching means is provided in the vicinity of the inkjet head.

According to a fourth aspect of the present invention, there is provided a maintenance method for covering a nozzle of an ink jet head with a cap to generate a negative pressure to suck liquid, comprising: a contact member (21) 22) for supporting the frame (22), and a support member (23) made of an elastic material for movably supporting the frame (22), and sucking the liquid in a state in which the contact surface of the cap and the ink jet is in close contact with each other It is maintenance method.

According to a fifth aspect of the present invention, in the fourth invention, the contact member (21) is formed of a rubber-like elastic body having a shore A hardness of 40 to 80 degrees.

A sixth invention is characterized in that, in the fourth or fifth invention, the support member (23) is composed of an elastic body having a penetration degree of 40-80.

A seventh aspect of the present invention is a maintenance method for covering a nozzle of an ink jet head with a cap to generate a negative pressure to suck liquid, characterized in that, at the end of sucking of the liquid, the negative pressure in the cap The ink jet head is rotated.

An eighth invention is characterized in that in any one of the inventions according to any one of the first to seventh inventions, liquid is supplied into the cap while the nozzle is covered with the cap, from the end of the suction of the liquid to the start of the application step, Thereby preventing drying of the ink exposed at the leading end.

A ninth aspect of the present invention is a maintenance mechanism for covering a nozzle of an ink jet head with a cap to generate a negative pressure to suck the liquid, the maintenance mechanism comprising: a cap covering the nozzle by abutting the inkjet head; negative pressure generating means for generating a negative pressure in the cap; A liquid reservoir communicated with the cap and the negative pressure generating means, a cap opening / closing means for bringing the cap into contact with the inkjet head, And a control means for controlling the operations of the liquid switching means and the low viscosity liquid storage portion, wherein the control means controls the low viscosity liquid storage portion and the ink storage portion to communicate with each other, Cap to fill the ink jet head with a low-viscosity liquid, and then to connect the ink reservoir and the inkjet head to fill the inkjet head with ink And a maintenance mechanism of the ink-jet head.

The tenth aspect of the present invention is the ink-jet recording method according to the ninth aspect, wherein the low viscosity liquid is a solvent for the ink.

An eleventh invention is characterized in that, in the ninth or tenth invention, the liquid switching means is provided in the vicinity of the inkjet head.

A twelfth aspect of the present invention is a maintenance mechanism for covering a nozzle of an inkjet head with a cap to generate a negative pressure to suck liquid, the maintenance mechanism comprising: a cap covering the nozzle by abutting the inkjet head; negative pressure generating means for generating a negative pressure in the cap; A cap opening / closing means for bringing the cap into contact with the inkjet head, an ink storage portion communicating with the inkjet head, and control means for controlling the operations of the cap and the negative pressure generating means, And a support member 23 made of an elastic material for movably supporting the frame 22. The contact member 21 is made of an elastic material in contact with the inkjet head, Which is a maintenance mechanism of the ink-jet head.

The thirteenth aspect of the invention is the twelfth aspect of the present invention, wherein the contact member (21) is formed of a rubber-like elastic body having a Shore A hardness of 40 to 80 degrees.

A fourteenth aspect of the present invention is the twelfth or thirteenth aspect, wherein the support member (23) is constituted by an elastic body having an intrusion degree of 40 to 80. [

A fifteenth aspect of the present invention is a maintenance mechanism for covering a nozzle of an ink jet head with a cap to generate a negative pressure to suck liquid, the maintenance mechanism comprising: a cap covering the nozzle by abutting the inkjet head; negative pressure generating means for generating a negative pressure in the cap; A cap opening / closing means for bringing the cap into contact with the inkjet head, and an ink storage portion communicating with the inkjet head, and control means for controlling the operations of the cap and the negative pressure generating means, Wherein the negative pressure generating means controls the negative pressure generating means to return the negative pressure in the cap to the atmospheric pressure based on a predetermined signal waveform.

The sixteenth invention is the liquid dispensing apparatus according to any one of the ninth to fifteenth inventions, characterized in that it comprises liquid transfer means for supplying liquid into the cap, The liquid is supplied into the cap while the nozzle is covered with the cap.

The seventeenth invention is an apparatus having a maintenance mechanism of an inkjet head according to any one of the ninth to sixteenth inventions.

According to the present invention, it is possible to fill the ink without introducing air bubbles.

In addition, it is possible to reduce the amount of ink consumed due to maintenance and shorten the time required for maintenance.

1 is a configuration diagram of a maintenance mechanism according to the first embodiment.
Fig. 2 is a diagram showing the configuration of the cap shown in the figure.
3 is a signal waveform output from the apparatuses according to the first embodiment.
4 is a charge flow of the first embodiment.
5 is a configuration diagram of a maintenance mechanism according to the second embodiment.
Fig. 6 is a schematic perspective view of a desk-top ink-jet applying apparatus equipped with a maintenance mechanism according to Embodiment 2. Fig.

The maintenance mechanism of the present invention can be used for various kinds of ink jet recording, but the best mode for carrying out the present invention will be described below by taking an ink jet printer as an example.

The maintenance mechanism of the present invention is for filling the inkjet head 1 with ink at the time of mounting or replacing the ink cartridge or removing dust, dry ink, bubbles, etc. of the inkjet head 1 at the time of printing failure. The inkjet head 1 is provided with a single nozzle or a plurality of nozzles constituted by extending cylinders, holes drilled in a plane, and the like.

The maintenance mechanism of the present invention is provided with the liquid switching means 4 and a second tank for storing the low viscosity liquid 32. The liquid switching means 4 switches between the ink 31 and the low viscosity liquid 32 ) Can be switched to perform charging of the liquid accompanying maintenance. Therefore, before the ink 31 is filled in the ink-jet head 1, the ink 31 can be charged after the bubble is removed by first filling with the low-viscous liquid 32 having high fluidity, , It is possible not only to reduce the consumption amount of the ink but also to shorten the ink charging time.

It is preferable that the liquid switching means 4 is provided in the vicinity of the ink jet head 1. This is because it is possible to suppress the consumption of the ink 31 more by providing both liquids to the inlet of the liquid switching means 4.

The low viscosity liquid 32 may be a liquid having a low viscosity and a high fluidity. However, it is preferable to obtain a function as a cleaning liquid. Specifically, a liquid constituted solely of a solvent from which solids are removed, .

Generally, inks used in inkjet printers can be classified into dye-based or pigment-based ink. The dye is a coloring agent which is dispersed or solvated as a molecule by a carrier medium. The carrier medium is liquid or solid at room temperature. A commonly used carrier medium is a mixture of water or water and an organic co-solvent (organic co-solvent). It is general that water is used as a main component, and a wetting agent such as glycerin is contained therein for the purpose of coloring agents and prevention of clogging. When water is used as the carrier medium, there is also a problem that such an ink generally has low water resistance.

The pigment is not soluble in the carrier medium, but is a coloring agent which is dispersed or suspended in the form of fine particles, and is stabilized by the use of a dispersant so as not to frequently flocculate and precipitate. Such compounds are well known. For example, pigment inks such as organic pigments and carbon blacks are used as colorants by dispersing fine pigments in a medium such as water using a surfactant or a dispersant.

The maintenance mechanism of the present invention can be applied regardless of the dye system or the pigment system. The viscosity of the ink is a mainstream having a low viscosity of about several tens cps, but it can be applied to a medium viscosity of about several hundreds of cps as long as the ink can be discharged by flying.

The present invention can also be applied to functional inks used for wiring pattern printing on a printed circuit board, application of a lubricant to a small component, printing of outdoors light resistance display material, UV curable ink printing, and the like.

The maintenance mechanism of the present invention includes an electropneumatic regulator 51 that can be adjusted to the same flow rate as an external signal waveform pattern and an ejector 52 capable of adjusting a negative pressure according to the value of the flow rate And a negative pressure adjusting means (5). The conventional maintenance mechanism suddenly stops the flow of the ink 31 discharged from the nozzle 6 because the negative pressure in the cap 2 is suddenly returned to the atmospheric pressure, In the present invention, since the negative pressure in the cap 2 can be returned to the atmospheric pressure by the desired waveform signal, the nozzle 6 (liquid bridging) is vigorously vibrated, It is possible to prevent the bubbles from remarrying without vibrating the meniscus at the tip.

However, when the ink 31 is filled with negative pressure, the adhesion between the head surface of the inkjet head 1 and the cap 2 is important. The contact member 21 of the cap 2 is made of a high-hardness elastic material, which can improve the adhesion. However, when the high-hardness elastic material is used, when the inclination of the head 2 and the cap 2 is large, . On the other hand, if the hardness of the contact member 21 of the cap 2 is increased, the contact member 21 is deformed due to the negative pressure, resulting in a gap.

Thus, in the present invention, by making the structure so as to follow the inclination of the head surface, it is made possible to secure the adhesion and the sealing property of the cap 2. That is, the contact member 21 abutting against the head face is made of a hardened elastic material so that the adhesion property is enhanced and the softened elastic material is applied to the support member 23 that supports the contact member 21 (and the frame 22) It is possible to maintain the sealing property by providing a degree of freedom such that it can follow the inclination of the head surface.

Hereinafter, the details of the present invention will be described by way of examples, but the present invention is not limited to these examples.

[Example 1]

Fig. 1 is a configuration diagram of a maintenance mechanism of the ink-jet applying device of this embodiment.

The inkjet head 1 ejects the ink 31 stored in the first tank 11 communicated by the communication member 9 with a plurality of nozzles 6 to perform printing or the like. Maintenance of the inkjet head 1 is carried out by covering the nozzle 6 with the cap 2 to generate a negative pressure in the cap 2 and causing the suctioned ink or the like to communicate with the cap 2 via the communication member 9 To the waste liquid tank (14). The cap 2 and the inkjet head 1 are brought into contact with each other automatically by the cap opening / closing means 3. The cap opening / closing means 3 may move the ink jet head 1 relative to the cap 2, or move the cap 2 relative to each other. In some industrial fields, the cap 2 may be manually opened and closed.

The maintenance mechanism of the present embodiment includes the second tank 12 communicated with the inkjet head 1 and the communication member 9 and the ink tank 2 connected to the inkjet head 1 and the first tank 11, And liquid switching means 4 for switching the communication with the second tank 12 alternatively. In the second tank (12), the low-viscosity liquid (32) initially flowing at the start of maintenance is stored. In this embodiment, a solvent (cleaning liquid) for dissolving the ink 31 was used for the low viscosity liquid 32. Thereby, even when the ink 31 is hardened in the flow path, it can be dissolved.

Further, as shown in Fig. 2, the cap 2 of the present embodiment is configured to have a degree of freedom such that it can follow the inclination of the head surface. The contact member 21 abutting against the head surface is made of a rubber of hardened elastic body Shore A hardness of 40 to 80 degrees (preferably 50 to 70 degrees) (JIS K6253 standard) and is adhered to the upper surface of the frame 22 Screws or the like.

The frame 22 is supported by a supporting member 23 composed of a softening elastic member (for example, rubber or spring) fixed by adhesion or screw fixing. The support member 23 has an intrusion degree of 40 to 80 (preferably 50 to 70 degrees) so as to be able to follow the mounting error (three-dimensional inclination) of the nozzle surface of the inkjet head 1 . The support member 23 is fixed to the plate-like mounting member 24. At least one at least one through hole (25) for aspiration and a joint (26) capable of connecting the communication member (9) are provided on the bottom surface of the frame (22).

According to the cap 2 of the present embodiment constituted as described above, complete adherence and sealing property can be ensured without being affected by the inclination of the nozzle face.

The negative pressure generating means 5 of the present embodiment is constituted by the signal generating means 15, the pressure supply pump 16, the regulator 51 and the ejector 52, 2). The negative pressure generating means 5 may be provided with a silencer 53 for absorbing air noise.

The signal generating means 15 can set and register a signal waveform of time and voltage of a plurality of patterns, and can select and output only one pattern from a plurality of registered patterns. The regulator (51) is capable of supplying pressure in accordance with the voltage of the signal waveform of the signal generating means (15). The signal generating means 15 may be constituted by, for example, a pulse generator or a PC.

The ejector 52 can generate a negative pressure in accordance with the pressure supplied from the regulator 51. [ The regulator 51 and the ejector 52 can be constituted by commercially available pneumatic devices.

Even if the regulator 51 does not control the negative pressure generated by the ejector 52, the pressure of the regulator 51 is kept constant and the pressure of the diaphragm of the diaphragm valve provided on the discard side of the ejector 52 By adjusting the amount, the negative pressure may be controlled.

The negative pressure generating means (5) of this embodiment is characterized in that the negative pressure generated in the cap (2) is gently returned to atmospheric pressure.

That is, in the present embodiment, the signal generating means 15 that emits a predetermined signal waveform makes the change in the negative pressure in the cap 2 gentle, thereby making it possible to prevent the bubble from being remarried.

The signal waveform to be set may be linear, curved, or signal waveforms that change precisely stepwise as long as the negative pressure in the cap 2 changes gently. As a curved waveform, for example, there can be mentioned a Sin waveform as shown in Fig. 3 (a), when the signal waveform output from the signal generating means 15 is a Sin waveform, the pressure supplied from the regulator 51 is changed as shown in Fig. 3 (b) The negative pressure of the ejector 52 is as shown in Fig. 3 (c), and it is possible to prevent the ink jet head 1 from imparting vibration to the meniscus at the tip of the nozzle 6.

The details of the maintenance procedure in this embodiment will be described with reference to Fig. Hereinafter, the charging flow at the time of installing or replacing the ink cartridge (at the time of initialization or ink replenishment) will be described.

"First Step"

First, the ink 31 is filled in the communication member 9. The first valve 41 of the liquid switching means 4 is opened and the second valve 42 is closed (STEP 1). Then, the negative pressure generating means 5 is activated based on the preset time, And the ink 31 is guided to the connecting member 9 using negative pressure as a negative pressure (STEP 2). The ink 31 is filled up to the portion of the first valve 41 of the communication member 9 (STEP 3) by generating the negative pressure for a predetermined time. Here, the preset time is the time from when the ink 31 reaches the first valve 42 of the communication member 9 through the first tank 11. [ After the lapse of the predetermined time, the generation of the negative pressure is stopped, and the cap 2 returns to the atmospheric pressure and the suction is stopped (STEP 4). The stoppage of the negative pressure in the first step need not be a gentle change in the negative pressure.

&Quot; Second Step &

Then, the low viscosity liquid 32 is charged into the nozzle 6. Then, The first valve 41 of the liquid switching means 4 is closed and the second valve 42 is opened in STEP 5 and the negative pressure generating means 5 is activated based on the preset time, And the low viscosity liquid 32 is charged with the inside pressure being negative (STEP 6). The low viscosity liquid 32 is filled in the communication member 9 and then charged into the ink jet head 1 (STEP 7).

Here, the predetermined time is defined as the time during which the low viscosity liquid 32 is reliably discharged from the tip of the nozzle 6. [ After the lapse of a predetermined time, the generation of the negative pressure is stopped, and the cap 2 returns to the atmospheric pressure and the suction is stopped (STEP 8). The stop of the negative pressure in the second step does not need to make the change in the negative pressure gentle.

"Third Step"

Finally, the ink 6 is filled in the ink 31. Then, The first valve 41 of the liquid switching means 4 is opened and the second valve 42 is closed in STEP 9. The negative pressure generating means 5 is activated in accordance with the predetermined time and signal waveform, The ink 31 filled up to the first valve 41 is guided to the inkjet head 1 (step 10). By generating the negative pressure for a preset time, the ink 31 is filled in the ink jet head 1 (STEP 11). Here, the predetermined time is defined as the time during which the ink 31 is reliably discharged from the tip of the nozzle 6. [ After the lapse of a predetermined time, the generation of the negative pressure is gently stopped based on the previously set signal waveform, so that the cap 2 is gently returned to the atmospheric pressure and the suction is stopped (STEP 12). Here, as the previously set signal waveform, the above-described Sin waveform is started, but it is not limited thereto.

The bubbles between the first tank 11 and the first valve 41 are driven in the first stage and the bubbles between the second tank and the nozzle 6 are discharged by the low viscosity liquid 32 in the second stage, It is possible to fill the ink jet head 1 with the ink 31 without releasing bubbles by discharging the bubbles between the ink jet heads 1 and 2, filling the ink in the third step, and releasing the negative pressure based on the predetermined signal waveform.

The maintenance in the case other than the mounting / replacing of the ink cartridge requires only the second and third steps since the first step is unnecessary. At the time of mounting / replacing the ink cartridge, if the ink does not reach the liquid switching means 4, since the bubbles are charged in the ink jet head 1, the first step is required.

[Example 2]

Fig. 5 is a configuration diagram of the maintenance mechanism of the present embodiment, and Fig. 6 is a schematic perspective view of a desk-top type ink-jet applicator equipped with the maintenance mechanism of this embodiment.

In the apparatus of this embodiment, as shown in Fig. 6, three ink-jet heads 1 aligned in the Y direction are provided in the Z-direction moving means 64. Fig. The workpiece table 61 is movable in the Y direction and the Z direction moving means 64 is movable in the X direction by the X direction moving means 63 provided on the beam 62. [ The three caps 2 are provided so as to be opposed to the ink jet head 1 at an interval. 6, reference numeral 11 denotes a first tank in which the ink 31 is stored, reference numeral 12 denotes a second tank in which the low-viscosity liquid 32 is stored, reference numeral 13 denotes a third tank in which the solution 33 is stored, to be. In Fig. 6, the waste liquid tank 14, the re-supply tank 18, the wiring of the electric machine, and the piping of the liquid transfer system are omitted.

The main difference between the structure of the maintenance mechanism of this embodiment and the structure of the first embodiment is that it has the third tank 13 and the re-supply tank 18.

In the third tank 13 of the maintenance mechanism of this embodiment, the solution 33 is stored. The dissolving liquid 33 is a material which is susceptible to air miscibility and is inexpensive. In this embodiment, ammonia water is used.

The re-supply tank 18 is for re-supplying the low viscosity liquid 32 to the cap 2. [ The significance of re-feeding the low viscosity liquid 32 to the cap 2 is to prevent evaporation of the ink 31 exposed at the tip of the nozzle 6. After the completion of the maintenance process, the ink 31 evaporates even before the application process starts. When the ink 31 evaporates, the viscosity of the ink 31 increases (increases), and the accuracy of the discharge amount and the position of the landing is lowered. . Therefore, in order to prevent evaporation of the ink 31, it is preferable to keep the cap 2 in contact with the ink jet head 1. However, this alone can not sufficiently prevent evaporation of the ink 31. [ This makes it possible to more effectively prevent the evaporation of the ink 31 by keeping the low viscosity liquid 32 in the concave portion of the cap 2 facing the nozzle 6. The supply of the low viscosity liquid 32 is performed by applying a constant pressure to the tank 18 for re-supply by the pressure supply pump 17. [

In the present embodiment, the low-viscosity liquid 32 is supplied to prevent evaporation. However, the same effect can be obtained if the liquid is the main component and does not remain in the cap 2. [

The maintenance procedure in this embodiment is the same as the procedure of maintenance in that the inkjet head 1 is first filled with the dissolving liquid 33 and then the low viscosity liquid 32 is filled and the ink 31 is finally filled Is done.

The liquid sucked by the negative pressure is supplied separately to the waste liquid tank 14 and the re-supply tank 18. In other words, the ink 31 and the dissolving liquid 33 are discharged to the waste liquid tank 14, and the low viscosity liquid 32 is discharged to the re-supply tank 18.

The desk-top type ink-jet application apparatus having the maintenance mechanism of the present embodiment having the above-described structure is capable of preventing the ink 31 ) Can be reliably prevented from evaporating.

[Industrial applicability]

The present invention is not limited to an inkjet printer, and can be applied to various inkjet recording such as a precision spraying and injecting apparatus (including a coating apparatus) and a precision coating apparatus. It is also applicable to an ink-jet patterning apparatus, a painting apparatus, a drawing apparatus, and a printing apparatus for use in, for example, an organic EL display panel, a large color panel,

The inkjet recording method can be applied regardless of the bubble generating system such as a piezo-type mechanical conversion system, resistance heating jet type, or the like.

In addition, it can be used in a lens coloring process in the lens manufacturing industry, and in poster and building material decoration in a large printing industry.

1: ink jet head 2: cap 3: cap opening / closing means 4: liquid switching means 5: negative pressure generating means 6: nozzle 9: communication member 11: first tank 12: second tank 14: A pressure supply pump for supplying a negative pressure; 17: a pressure supply pump; 18: a supply tank; 21: a contact member; 22: a frame; The present invention relates to a method of manufacturing a valve having a first valve and a second valve, wherein the first valve, the second valve, the third valve, The present invention relates to a muffler for a muffler and a muffler for supplying a muffler to a muffler, and more particularly, to a muffler for a muffler, 68: Connector for communication

Claims (11)

A cap 22 having a contact member 21 made of an elastic material in contact with the ink jet head, a frame 22 to which the contact member is fixed, and a support member 23 made of an elastic body for movably supporting the frame 22 A nozzle surface of the ink jet head is covered with a cap and a negative pressure is generated in the cap by a negative pressure generating device to suck the liquid,
The contact member 21 is composed of an elastic body which is hard and hard to be deformed by the inclination between the nozzle face of the ink jet head and the cap and can not follow,
The support member 23 is composed of an elastic body that is softened more than the contact member 21 and an elastic body having a hardness that allows the cap to deform and follow the inclination of the nozzle face of the inkjet head with the cap,
And the liquid is sucked in a state in which the cap and the contact surface between the cap and the nozzle face of the ink jet head are in close contact with each other. The method according to claim 1,
Wherein the support member (23) is disposed symmetrically with respect to the center of the frame (22). 3. The method according to claim 1 or 2,
Wherein the contact member 21 is made of a rubber elastic material having a shore A hardness of 40 to 80 degrees or the support member 23 is made of an elastic material having a penetration degree of 40 to 80, Repair method. 3. The method according to claim 1 or 2,
Wherein the contact member 21 is made of a rubber elastic body having a shore A hardness of 40 to 80 degrees and the support member 23 is made of an elastic material having a penetration degree of 40 to 80, . A maintenance mechanism for covering a nozzle face of an ink jet head with a cap and generating a negative pressure in the cap by a negative pressure generating device to suck the liquid,
A cap for covering the nozzle face with the ink jet head, a negative pressure generating device for generating a negative pressure in the cap, a waste liquid tank communicating with the cap and the negative pressure generating device, An ink reservoir communicating with the inkjet head, and a controller for controlling the operation of the ink reservoir,
The cap includes a contact member 21 made of an elastic material abutting the inkjet head, a frame 22 to which the contact member is fixed, a support member 23 made of an elastic material for movably supporting the frame 22, Lt; / RTI >
The contact member 21 is composed of an elastic body having hardness that can not follow the deformation of the nozzle face of the ink jet head and the cap and can not follow, and hardness that does not cause deformation due to negative pressure,
The support member 23 is composed of an elastic body that is softened more than the contact member 21 and is composed of an elastic body having a hardness capable of following the deformation of the nozzle face of the ink- Maintenance mechanism of. 6. The method of claim 5,
Wherein the support member (23) is disposed symmetrically with respect to the center of the frame (22). The method according to claim 5 or 6,
Wherein the contact member (21) is made of a rubber-like elastic material having a Shore A hardness of 40 to 80 degrees, or the supporting member (23) is made of an elastic material having an intrusion degree of 40 to 80. The method according to claim 5 or 6,
Wherein the contact member (21) is made of a rubber-like elastic material having a Shore A hardness of 40 to 80 degrees, and the support member (23) is made of an elastic material having an intrusion degree of 40 to 80. An inkjet application device comprising the maintenance mechanism of the inkjet head according to claim 5 or 6. An inkjet application device comprising the maintenance mechanism of the inkjet head according to claim 7. An inkjet application device comprising the maintenance mechanism of the inkjet head according to claim 8.

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