CN101674939B - Method, mechanism, and device for maintaining inkjet head - Google Patents
Method, mechanism, and device for maintaining inkjet head Download PDFInfo
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- CN101674939B CN101674939B CN2007800478628A CN200780047862A CN101674939B CN 101674939 B CN101674939 B CN 101674939B CN 2007800478628 A CN2007800478628 A CN 2007800478628A CN 200780047862 A CN200780047862 A CN 200780047862A CN 101674939 B CN101674939 B CN 101674939B
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- inkjet head
- liquid
- lid
- negative pressure
- low viscosity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/165—Preventing or detecting of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/165—Preventing or detecting of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
- B41J2/16517—Cleaning of print head nozzles
- B41J2/16552—Cleaning of print head nozzles using cleaning fluids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/1707—Conditioning of the inside of ink supply circuits, e.g. flushing during start-up or shut-down
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
Abstract
A method, mechanism, and device for maintaining an inkjet head, which can perform excellent application and in which ink discharge performance is recovered and come-out of a nozzle does not occur. [MEANS FOR SOLVING PROBLEMS] A maintenance method for drawing liquid by covering a nozzle of an inkjet head by a cap and generating a negative pressure, the method having a waste liquid tank for allowing the cap and negative pressure generation means to be communicated with each other, a low viscous liquid containing section communicating with the inkjet head, an ink containing section communicating with the inkjet head, and liquid selection means for allowing the inkjet head to be alternatively communicated with the low viscous liquid containing section or the ink containing section. In the maintenance method, mechanism, and device, the low viscous liquid containing section and the ink containing section are communicated with each other, a negative pressure is generated in the cap to fill the inkjet head with a low viscous liquid, and then the ink containing section and the inkjet head are communicated with each other to fill the inkjet head with ink.
Description
Technical field
The present invention relates to a kind ofly install at print cartridge/when changing, inkjet head is filled printing ink, maybe when printing is bad the dust of inkjet head, dry printing ink, bubble etc. removed method and mechanism and the device of (below, sometimes title " maintenance ").
Background technology
Generally, in ink-jet recording apparatus, be provided with maintenance agency in order to keep the printing ink discharge performance.Existing maintenance agency is known to make the action of negative pressure extracting pump again just like after the nozzle face of inkjet head is covered by lid, and to the nozzle face effect negative pressure suction force of inkjet head, from inkjet head side recover waste ink.
For example, in patent documentation 1, disclose following structure, having comprised: cover the lid of the nozzle face of inkjet head, be connected in via tube connector this lid the printing ink outlet the negative pressure extracting pump and be connected in this negative pressure extracting pump and with the spent ink groove of the spent ink recovery of aspirating.
And disclosed ink-jet printer comprises in the patent documentation 2: the printing head of a plurality of nozzles of tool; Have with common peristome and a plurality of pump orifice of a plurality of nozzles of printing head and make peristome connect airtight the lid that forms confined space in nozzle face; Via a plurality of pump orifices of lid at least one draw-off pump from a plurality of nozzle suction printing ink; And the printing ink stream that the pump orifice of lid is connected with draw-off pump; Wherein, go out printing ink and medium is carried out dot lattice printing by the nozzle ejection of printing head, when electric power starting or make in case of necessity the peristome of lid connect airtight nozzle, and aspirated by draw-off pump.
And, in patent documentation 3, disclose at the suction lid a plurality of pump orifices have been set, control by each the valve on-off action to the access of each pump orifice, can when importing the initial stage, printing ink just printing ink suitably can be filled in all passages, and when periodic cleaning, can near the passage the shower nozzle end that bubble is easier to be detained, efficient be preferably removed bubble.
Patent documentation 1: Japanese patent laid-open 7-81089 communique
Patent documentation 2: Japanese patent laid-open 7-304191 communique
Patent documentation 3: No. 3800855 communique of Japan Patent
Summary of the invention
(problem that invention will solve)
When the situation of the printing ink that contains the solid-state part such as pigment because the higher printing ink of viscosity itself is mobile relatively poor, therefore exists and fill time-consuming problem, and in order to keep in repair the essential problems that consume a large amount of high price printing ink.
And, when being made as negative pressure in lid, if the adhesion of shower nozzle face and lid is poor, then exists ambient atmos to sneak into and can't obtain the problem of abundant suction force.
And, after maintenance, in lid, be under the state of negative pressure, if lid is separated, air pressure in the lid just sharply changes, and corresponding with this variation, the printing ink of filling in each nozzle of shower nozzle just vibrates, thereby just be involved in air from each nozzle at this moment, thereby exist bubble to enter once again the interior problem of shower nozzle.
The present invention is in order to solve above-mentioned technical matters, and its purpose is to provide a kind of and can replys the printing ink discharge performance and can not occur that nozzle comes off, and method for maintaining and mechanism and the device of the inkjet head that can well be coated with.
(technical scheme of technical solution problem)
The method for maintaining of the inkjet head of the present invention the 1st aspect, to utilize lid to cover at the nozzle that inkjet head has, and produce negative pressure and with the method for maintaining of liquid suction, it is characterized in that being provided with: be communicated in above-mentioned lid and negative pressure generating device waste liquid tank, be communicated in above-mentioned inkjet head the low viscosity liquid storage unit, be communicated in the ink containment section of above-mentioned inkjet head and above-mentioned inkjet head selected a liquid switching mechanism that is communicated with above-mentioned low viscosity liquid storage unit or above-mentioned ink containment section; And, above-mentioned low viscosity liquid storage unit is connected with above-mentioned inkjet head, and makes above-mentioned lid produce negative pressure, thereby above-mentioned inkjet head is filled low viscosity liquid, then, above-mentioned ink containment section is connected with above-mentioned inkjet head, above-mentioned inkjet head is filled printing ink.
The method for maintaining of the inkjet head of the present invention the 2nd aspect is characterized in that, aspect the present invention the 1st in, above-mentioned low viscosity liquid is the solvent of printing ink.
The method for maintaining of the inkjet head of the present invention the 3rd aspect is characterized in that, aspect the present invention the 1st or the 2nd in, the aforesaid liquid switching mechanism is equipped near the above-mentioned inkjet head.
The method for maintaining of the inkjet head of the present invention the 4th aspect, to utilize lid to cover at the nozzle that inkjet head has, and produce negative pressure and with the method for maintaining of liquid suction, it is characterized in that being provided with: lid, above-mentioned lid has and the affixed framework 22 of above-mentioned inkjet head butt and the abutting member 21 that is made of elastomer, above-mentioned abutting member and removable freely support frame 22 and the supporting member 23 that is made of elastomer, and, making under above-mentioned lid and the ink-jet bearing surface phase tightlock status, liquid is aspirated.
The method for maintaining of the inkjet head of the present invention the 5th aspect is characterized in that, aspect the present invention the 4th in, above-mentioned abutting member 21 is made of the rubber-like elastic body of Xiao Shi A hardness 40～80 degree.
The method for maintaining of the inkjet head of the present invention the 6th aspect is characterized in that, aspect the present invention the 4th or the 5th in, above-mentioned supporting member 23 is that 40～80 elastomer consists of by needle penetration.
The method for maintaining of the inkjet head of the present invention the 7th aspect, be to utilize lid to cover at the nozzle that inkjet head has, and produce negative pressure and with the method for maintaining of liquid suction, it is characterized in that, when the liquid suction finishes, according to the preset signals waveform negative pressure in the lid is returned back to atmospheric pressure.
The method for maintaining of the inkjet head of the present invention the 8th aspect, it is characterized in that, in the either side aspect the present invention the 1st to the 7th, during from after liquid suction finishes till the beginning application step, under the state that said nozzle is utilized above-mentioned lid cover, to supplying liquid in the above-mentioned lid, prevent the ink setting that the said nozzle front end exposes.
The maintenance agency of the inkjet head of the present invention the 9th aspect, to utilize lid to cover at the nozzle that inkjet head has, and produce negative pressure and with the maintenance agency of liquid suction, it is characterized in that comprising: be connected to above-mentioned inkjet head and cover the lid of said nozzle; Make above-mentioned lid produce the negative pressure generating device of negative pressure; Be communicated in the waste liquid tank of above-mentioned lid and above-mentioned negative pressure generating device; Make the cover body opening/closing mechanism of above-mentioned lid and above-mentioned inkjet head butt or non-butt; Be communicated in the low viscosity liquid storage unit of above-mentioned inkjet head; The ink containment section that is communicated with above-mentioned inkjet head; Make above-mentioned inkjet head select a liquid switching mechanism that is communicated with above-mentioned low viscosity liquid storage unit or above-mentioned ink containment section; And the control part that these actions are controlled; Above-mentioned control part makes above-mentioned low viscosity liquid storage unit be connected with above-mentioned inkjet head, and make above-mentioned lid produce negative pressure and above-mentioned inkjet head is filled low viscosity liquid, above-mentioned ink containment section is connected with above-mentioned inkjet head, above-mentioned inkjet head is filled printing ink.
The maintenance agency of the inkjet head of the present invention the 10th aspect is characterized in that, aspect the present invention the 9th in, above-mentioned low viscosity liquid is the solvent of printing ink.
The maintenance agency of the inkjet head of the present invention the 11st aspect is characterized in that, aspect the present invention the 9th or the 10th in, the aforesaid liquid switching mechanism is equipped near the above-mentioned inkjet head.
The maintenance agency of the inkjet head of the present invention the 12nd aspect, to utilize lid to cover at the nozzle that inkjet head has, and produce negative pressure and with the maintenance agency that liquid aspirates, it is characterized in that comprising: be connected to above-mentioned inkjet head and cover the lid of said nozzle; Make above-mentioned lid produce the negative pressure generating device of negative pressure; Be communicated in the waste liquid tank of above-mentioned lid and above-mentioned negative pressure generating device; Make the cover body opening/closing mechanism of above-mentioned lid and above-mentioned inkjet head butt or non-butt; Be communicated in the ink containment section of above-mentioned inkjet head; And the control part that these actions are controlled; Above-mentioned lid has: the abutting member 21 that is connected to above-mentioned inkjet head and is made of elastomer; The framework 22 that above-mentioned abutting member is affixed; And the removable supporting member 23 that supports freely above-mentioned framework 22 and consisted of by elastomer.
The maintenance agency of the inkjet head of the present invention the 13rd aspect is characterized in that, aspect the present invention the 12nd in, above-mentioned abutting member 21 is made of the rubber-like elastic body of Xiao Shi A hardness 40～80 degree.
The maintenance agency of the inkjet head of the present invention the 14th aspect is characterized in that, aspect the present invention the 12nd or the 13rd in, above-mentioned supporting member 23 is that 40～80 elastomer consists of by needle penetration.
The maintenance agency of the inkjet head of the present invention the 15th aspect, to utilize lid to cover at the nozzle that inkjet head has, and produce negative pressure and with the maintenance agency of liquid suction, it is characterized in that comprising: be connected to above-mentioned inkjet head and cover the lid of said nozzle; Make above-mentioned lid produce the negative pressure generating device of negative pressure; Be communicated in the waste liquid tank of above-mentioned lid and above-mentioned negative pressure generating device; Make the cover body opening/closing mechanism of above-mentioned lid and above-mentioned inkjet head butt or non-butt; Be communicated in the ink containment section of above-mentioned inkjet head; And the control part that these actions are controlled; Above-mentioned control part is controlled above-mentioned negative pressure generating device according to the preset signals waveform negative pressure in the above-mentioned lid is returned back to atmospheric mode.
The maintenance agency of the inkjet head of the present invention the 16th aspect, it is characterized in that, in the either side aspect the present invention the 9th to the 15th, have carrying out the conveying mechanism of liquid supply in the above-mentioned lid, above-mentioned control part from after liquid suction finishes till the beginning application step during, utilizing above-mentioned lid to cover under the state of said nozzle, to carrying out the liquid supply in the above-mentioned lid.
The device of the present invention the 17th aspect has the maintenance agency of the inkjet head of either side in the present invention the 9th to the 16th aspect.
(effect of invention)
According to the present invention, can in the situation that not sneak into bubble, carry out printing ink and fill.
And the present invention can reduce the ink consumption amount of following maintenance to cause, and can shorten the needed time of maintenance.
Description of drawings
Fig. 1 is the structural map of the maintenance agency of embodiment 1.
Fig. 2 is the perspective structural map of lid.
The signal waveform of Fig. 3 for exporting from the machine type of embodiment 1.
Fig. 4 is the filling flow process of embodiment 1.
Fig. 5 is the structural map of the maintenance agency of embodiment 2.
Fig. 6 is the approximate three-dimensional map of desktop ink-jet coating apparatus that is equipped with the maintenance agency of embodiment 2.
Symbol description
1 inkjet head
2 lids
3 cover body opening/closing mechanisms
4 liquid switching mechanisms
6 nozzles
9 communication member
11 the 1st grooves
12 the 2nd grooves
13 the 3rd grooves
14 waste liquid tanks
15 signal generation components
16 (negative pressure is used) pressure transfer pump
17 (malleation is used) pressure transfer pump
18 supply tanks again
21 abutting member
22 frameworks
23 supporting members
24 installation components
25 through holes
26 joints
31 printing ink
32 low viscosity liquids
33 lysates
34 waste liquids
41 the 1st valves
42 the 2nd valves
43 the 3rd valves
44 the 4th valves
45 the 5th valves
51 adjusters
52 injectors
53 mufflers
61 workbench
62 beams
63X direction moving assembly
64Z direction moving assembly
67 power switches
68 connector for communications
The specific embodiment
Maintenance agency of the present invention can be used in various ink mist recordings, below take ink-jet printer as example, describe implementing better form of the present invention.
Maintenance agency of the present invention installs at print cartridge/when changing inkjet head 1 carried out printing ink to fill, maybe when printing when bad removals such as the dust of inkjet head 1, dry printing ink, bubbles.Inkjet head 1 comprises by extended cylinder or the single or multiple nozzles that consist of in plane middle punch etc.
Maintenance agency of the present invention comprises: liquid switching mechanism 4 and the 2nd groove that stores low viscosity liquid 32; Switch printing ink 31 and low viscosity liquid 32 by liquid switching mechanism 4, just can follow the liquid filling of maintenance.Therefore, before to inkjet head 1 interior filling printing ink 31, at first utilize mobile higher low viscosity liquid 32 to fill and with after the bubble removal, just can carry out the filling of printing ink 31, thus, not only the ink consumption amount can be cut down, also the printing ink filling time can be shortened.
Generally, the employed printing ink of ink-jet printer can be categorized as dyestuff or pigment.So-called " dyestuff " refers to utilize carrier medium to disperse according to molecule or fused colouring agent.Carrier medium at room temperature is in a liquid state or is solid-state.Common employed carrier medium is the mixture of water or water and organic cosolvent.Generally take water as principal component, and contain therein colouring agent and under the purpose that prevents situations such as stopping up such as wetting agents such as glycerine.In the situation that carrier medium makes water, generally water-fast fastness shortcoming on the low side also appears in this kind printing ink.
So-called " pigment " can disperse or suspends with the small-particle form though refer to be insoluble in the carrier medium, and is generally cohesion and deposited phenomenon can not occur, and is the colouring agent of stabilisation by the use of dispersant.This kind compound majority is known, uses interfacial agent or dispersant to carry out corpusculed the pigment such as organic pigment or carbon black such as having, and the pigment ink that uses by being scattered in the medium such as water and as colouring agent etc.
Maintenance agency of the present invention is no matter dyestuff or pigment are all applicable.The viscosity of printing ink is take the low viscosity of tens of cps degree as main flow, if but under the prerequisite of ejection of dispersing, also more than the medium viscosity of applicable hundreds of cps degree.
In addition, the present invention is also applicable to such as to the wiring pattern printing of printed base plate, be lubricated agent coating or the employed functional ink of situation such as the printing of outdoor light resistance display material, UV fixed oil ink print to micro parts.
And, maintenance agency of the present invention, the negative pressure generating device that possesses electropneumatic formula adjuster 51 that capable of regulating external signal waveform patterns flow is arranged and can carry out negative pressure adjustment and be consisted of by injector 52 according to this flow value.Existing maintenance agency is because make the negative pressure in the lid 2 return sharp atmospheric pressure, thereby the flow of the printing ink 31 of discharging from nozzle 6 also sharply stops, the fierce vibration of the meniscus of nozzle 6 front ends (liquid bridge), in stream, produce (sneaking into again) bubble this moment, but in the present invention, because the negative pressure in the lid 2 can be returned atmospheric pressure according to required waveform signal, thereby can not give vibration to the meniscus of nozzle 6 front ends, can prevent that bubble from sneaking into again.
But when carrying out the filling of printing ink 31 according to negative pressure, the adhesion that the shower nozzle face of inkjet head 1 and lid are 2 is important.By consist of the abutting member 21 of lid 2 with the high rigidity elastomer, though can promote adhesion, in the situation that be made of the high rigidity elastomer, the inclination that has shower nozzle face and lid 2 produces greatly the problem in gap.On the other hand, if the hardness of the abutting member 21 of lid 2 is softening, just the gap occurs because negative pressure causes abutting member 21 to deform.
Therefore, in the present invention, by being set as the structure of the inclination that can follow the shower nozzle face, just can positively reach adhesion and the sealing of lid 2.Namely, the abutting member 21 that connects with the shower nozzle face is made of the elastomer that hardens, therefore can improve adhesion, and the supporting member 23 that supports abutting member 21 (and framework 22) is supported by softening elastomer, therefore have the free degree of the inclination that can follow the shower nozzle face, and can keep sealing.
Below, by embodiment detailed content of the present invention is described, but the present invention is not subjected to any restriction of these embodiment.
Fig. 1 is the structural map of maintenance agency of the ink-jet coating apparatus of the present embodiment.
The maintenance agency of the present embodiment is additional in above-mentioned existing structure: utilize communication member 9 to be communicated in the 2nd groove 12 of inkjet head 1 and the liquid switching mechanism 4 that will select inkjet head 1 and being communicated with of the 1st groove 11 or the 2nd groove 12 switching.In the 2nd groove 12, will store the initial low viscosity liquid 32 that flows into when beginning to keep in repair.In the present embodiment, low viscosity liquid 32 uses the solvent (detergent remover) of dissolving printing ink 31.Thus, even the situation that printing ink 31 solidifies in stream solubilized still.
And as shown in Figure 2, the lid 2 of the present embodiment constitutes has the free degree that can follow the shower nozzle face tilt.
The abutting member 21 that connects with the shower nozzle face is made of the rubber of elastomeric Xiao Shi A hardness 40～80 degree of sclerosis (best 50～70 degree) (JIS K 6253 specifications), utilize such as the modes such as bonding or spiral shell is solid be installed in framework 22 above.
According to the lid 2 of the present embodiment as constituted above, can in the situation of the impact that not tilted by nozzle face, guarantee completely adhesion and sealing.
The negative pressure generating device of the present embodiment is made of signal generation component 15, pressure transfer pump 16, adjuster 51 and injector 52, is communicated in lid 2 via waste liquid tank 14.In addition, the muffler 53 that negative pressure generating device also can additional absorption air sound.
Even do not control by 51 pairs of negative pressure that produced by injector 52 of adjuster, in the situation that keep certain pressure from adjuster 51, by to adjusting in the amount of restriction of the set choke valve of the waste side of injector 52, also can carry out the control of negative pressure.
The negative pressure generating device of the present embodiment is characterised in that and makes the lid 2 interior negative pressure that produce return back to lenitively atmospheric pressure.That is, in the present embodiment, by sending the signal generation component 15 of preset signals waveform, produce lenitively the negative pressure variation in the lid 2, just can prevent sneaking into again of bubble thus.
Under the prerequisite of the negative pressure moderate change of the signal waveform that sets in making lid 2, can be linearity, curve, also can be the signal waveform of trickle phasic Chang.The curve waveform is Sin waveform as shown in Figure 3.Shown in Fig. 3 (a), if will be made as the Sin waveform from the signal waveform of signal generation component 15 outputs, the just variation shown in Fig. 3 (b) of pressure of then supplying from adjuster 51, and the negative pressure of injector 52 is shown in Fig. 3 (c), can prevent from giving vibration to the meniscus of nozzle 6 front ends of inkjet head 1.
Detailed content for the service sequence of the present embodiment describes according to Fig. 4.Below, for print cartridge install/the filling flow process at when replenishing (during the initial stage and printing ink) describes when changing.
The 1st stage
At first, printing ink 31 is filled in the communication member 9.Make the 1st valve 41 of liquid switching mechanism 4 be opening, and make the 2nd valve 42 for closed condition (step 1), according to Preset Time negative pressure generating device is started, make lid 2 interior formation negative pressure, and printing ink 31 is directed in the coupling member 9 (step 2).Produce by the negative pressure of carrying out Preset Time, printing ink 31 just is filled to the 1st valve 41 part places (step 3) of communication member 9.Herein, so-called " Preset Time " is the time printing ink 31 arrives the 1st valve 41 of communication member 9 from the 1st groove 11 till.Through behind the Preset Time, produce by stopping negative pressure, just be returned to atmospheric pressure in the lid 2, and stop suction (step 4).In addition, the negative pressure variation that stops not need to produce mitigation that negative pressure produces in the 1st stage.
The 2nd stage
Secondly, low viscosity liquid 32 is filled in the nozzle 6.Make the 1st valve 41 of liquid switching mechanism 4 be closed condition, and make the 2nd valve 42 be opening (step 5), according to Preset Time negative pressure generating device is started, make lid 2 interior formation negative pressure, and carry out the filling (step 6) of low viscosity liquid 32.Produce by the negative pressure of carrying out Preset Time, low viscosity liquid 32 recharges in inkjet head 1 (step 7) after being filled in communication member 9.Herein, so-called " Preset Time " is 32 certain times of discharging from the front end of nozzle 6 of low viscosity liquid.Through behind the Preset Time, stop negative pressure and produce, just be returned to atmospheric pressure in the lid 2 thus, and stop suction (step 8).In addition, the negative pressure variation that stops not need to produce mitigation that negative pressure produces in the 2nd stage.
The 3rd stage
At last, printing ink 31 is filled in the nozzle 6.Make the 1st valve 41 of liquid switching mechanism 4 be opening, and make the 2nd valve 42 be closed condition (step 9), according to Preset Time and signal waveform, negative pressure generating device is started, make lid 2 interior formation negative pressure, and the printing ink 31 through being filled to the 1st valve 41 is directed in inkjet head 1 (step 10).Produce by the negative pressure of carrying out Preset Time, printing ink 31 just is filled in the inkjet head 1 (step 11).Herein, so-called " Preset Time " is 31 certain times of discharging from the front end of nozzle 6 of printing ink.When through behind the Preset Time, just according to the preset signals waveform, negative pressure is produced stop lenitively, just will be returned to lenitively atmospheric pressure in the lid 2 thus, and stop suction (step 12).Herein, the preset signals waveform is above-mentioned disclosed Sin waveform, but is not limited to this.
Through above order, in the 1st stage, just the bubble of 41 on the 1st groove 11 and the 1st valve is evicted from, convenient for the bubble discharge of low viscosity liquid 32 with 6 at the 2nd groove and nozzle in the 2nd stage, in the 3rd stage, fill printing ink, and according to the preset signals waveform negative pressure is discharged, just can in the situation that have no residual bubble, carry out the filling of printing ink 31 to inkjet head 1 thus.
In addition, install at print cartridge/maintenance of situation beyond when changing, because do not need for the 1st stage, as long as thereby carried out for the 2nd and the 3rd stage.Print cartridge installs/when changing, if printing ink does not arrive to liquid switching mechanism 4, because bubble will be filled in the inkjet head 1, thereby will need for the 1st stage.
Fig. 5 is the structural map of the maintenance agency of the present embodiment, and Fig. 6 is the approximate three-dimensional map of desktop ink-jet coating apparatus that carries the maintenance agency of the present embodiment.
The device of the present embodiment as shown in Figure 6,3 inkjet heads 1 arranging in Y-direction are equipped on the Z direction moving assembly 64.Workbench 61 moves freely in Y-direction, and Z direction moving assembly 64 utilizes directions X moving assembly 63 set on the beam 62, and is mobile freely at directions X.3 lids 2 set with 1 relative separating to ground of inkjet head.Among Fig. 6, symbol 11 is the 1st grooves that store printing ink 31, and symbol 12 is the 2nd grooves that store low viscosity liquid 32, and symbol 13 is the 3rd grooves that store lysate 33.In addition, waste liquid tank 14, the again wiring of supply tank 18, electric system and the pipe arrangement of liquor charging system have been omitted among Fig. 6.
The maintenance agency of the present embodiment and embodiment 1 constructional Main Differences be in: be provided with the 3rd groove 13, be provided with again supply tank 18.
In the 3rd groove 13 that the maintenance agency of the present embodiment has, store lysate 33.Lysate 33 is easily with the material of the cheapness of air dissolves, uses in the present embodiment ammoniacal liquor.
Supply tank 18 is used for supplying once again low viscosity liquid 32 to lid 2 again.The meaning of lid 2 being supplied once again low viscosity liquid 32 is, prevents printing ink 31 evaporations that nozzle 6 front ends expose.After the maintenance step finishes, until application step begin during, printing ink 31 also evaporates.If printing ink 31 evaporation, just printing ink 31 tackifies cause spray volume to put precision and reduce with playing dropping place, if tackify further, just printing ink 31 does not disperse.Therefore, in order to prevent the evaporation of printing ink 31, preferably be set as the state that lid 2 is connected to inkjet head 1, but have the situation that can't fully prevent printing ink 31 evaporations.Therefore, by be redefined for nozzle 6 relatively to lid 2 recess places be detained the state of low viscosity liquid 32, just can more effectively prevent printing ink 31 evaporations.The supply of low viscosity liquid 32 can by utilize 17 pairs of pressure transfer pumps again supply tank 18 mode that applies malleation carry out.
In addition, in the present embodiment, although supply low viscosity liquid 32 in order to avoid evaporating, as long as for take water as principal component and do not residue in liquid in the lid 2, still can reach same effect.
The service sequence of the present embodiment by at first lysate 33 being filled in the inkjet head 1, then recharges low viscosity liquid 32, carries out the mode of the filling of printing ink 31 at last again and carries out.
By the liquid of negative pressure suction, will enter respectively in waste liquid tank 14 and the supply tank 18 again.That is, printing ink 31 is discharged from waste liquid tank 14 with lysate 33, and low viscosity liquid 32 is discharged from supply tank 18 again.
Have the as constituted above desktop ink-jet coating apparatus of the maintenance agency of the present embodiment, except the effect of embodiment 1, can also reach till really preventing from from after the maintenance step finishes beginning to application step during the effect of printing ink 31 evaporations occurs.
Utilizability on the industry
The present invention is not limited to ink-jet printer, can also be applicable to the various ink mist recordings such as accurate spraying/injection device (comprising apparatus for coating), precision coating device.Also go for the ink jet type patterning, apparatus for coating/drawing apparatus that aspects such as organic EL display panel, the printing of large colour panel, industrial mark is used/printing equipment.
About ink jet recording method, no matter the Bubble formation modes such as the mechanical switch mode such as piezoelectric type or resistance heat injecting type are all applicable.
And, can also be used in the aspects such as placard, building materials and ornaments of the manufacturing lens coloring step of lens, large-sized print industry.
Claims (15)
1. the method for maintaining of an inkjet head is to utilize lid to cover at the nozzle that inkjet head has, and produces negative pressure and with the method for maintaining of liquid suction, it is characterized in that being provided with:
Be communicated in the waste liquid tank of described lid and negative pressure generating device, be used for reclaiming the again supply tank (18) that is fed to the liquid in the described lid, to carrying out the conveying mechanism of liquid supply in the described lid, be communicated in the low viscosity liquid storage unit of described inkjet head, be communicated in the ink containment section of described inkjet head, be communicated in the lysate storage unit that is used for storing lysate (33) of described inkjet head, and with described inkjet head select one with described low viscosity liquid storage unit, described ink containment section, or the liquid switching mechanism of described lysate storage unit connection;
And, described lysate storage unit is connected with described inkjet head, and make described lid produce negative pressure, thus described inkjet head is filled lysate, described low viscosity liquid storage unit is connected with described inkjet head, and make described lid produce negative pressure, thereby described inkjet head is filled low viscosity liquid, then, described ink containment section is connected with described inkjet head, and make described lid produce negative pressure, described inkjet head is filled printing ink;
During from after liquid suction finishes till the beginning application step, under the state that described nozzle is utilized described lid cover, by with the liquid holdup in the described again supply tank at described lid, prevent the ink setting that described spray nozzle front end exposes.
2. the method for maintaining of inkjet head according to claim 1 is characterized in that, described low viscosity liquid is the solvent of printing ink.
3. the method for maintaining of inkjet head according to claim 1 and 2 is characterized in that, described liquid switching mechanism is equipped near the described inkjet head.
4. the method for maintaining of inkjet head according to claim 1 and 2 is characterized in that, described conveying mechanism comprises for the pressure transfer pump (17) that the liquid in the described again supply tank is fed to once again described lid.
5. the maintenance agency of an inkjet head is to utilize lid to cover at the nozzle that inkjet head has, and produces negative pressure and with the maintenance agency of liquid suction, it is characterized in that comprising:
Be connected to described inkjet head and cover the lid of described nozzle; Make described lid produce the negative pressure generating device of negative pressure; To carrying out the conveying mechanism of liquid supply in the described lid; Be communicated in the waste liquid tank of described lid and described negative pressure generating device; Be used for reclaiming the again supply tank (18) that is fed to the liquid in the described lid; Make the cover body opening/closing mechanism of described lid and described inkjet head butt or non-butt; Be communicated in the low viscosity liquid storage unit of described inkjet head; The ink containment section that is communicated with described inkjet head; Be communicated in the lysate storage unit that is used for storing lysate (33) of described inkjet head; Make described inkjet head select a liquid switching mechanism that is communicated with described low viscosity liquid storage unit, described ink containment section or described lysate storage unit; And the control part that these actions are controlled;
Described control part makes described lysate storage unit be connected with described inkjet head, and make described lid produce negative pressure, thereby described inkjet head is filled lysate, described low viscosity liquid storage unit is connected with described inkjet head, and make described lid produce negative pressure and described inkjet head is filled low viscosity liquid, described ink containment section is connected with described inkjet head, and makes described lid produce negative pressure, described inkjet head is filled printing ink;
Described control part from after liquid suction finishes till the beginning application step during, under the state that described nozzle is utilized described lid cover, by to the liquid in the described again supply tank of supply in the described lid, prevent the ink setting that described spray nozzle front end exposes.
6. the maintenance agency of inkjet head according to claim 5 is characterized in that, described low viscosity liquid is the solvent of printing ink.
7. according to claim 5 or the maintenance agency of 6 described inkjet heads, it is characterized in that, described liquid switching mechanism is equipped near the described inkjet head.
8. according to claim 5 or the maintenance agency of 6 described inkjet heads, it is characterized in that,
Described conveying mechanism comprises for the pressure transfer pump (17) that the liquid in the described again supply tank is fed to once again described lid.
9. a device has the maintenance agency of claim 5 or 6 described inkjet heads.
10. the method for maintaining of inkjet head according to claim 1 and 2, it is characterized in that, described ink containment section is connected with described inkjet head and fills the 1st step that printing ink arrives described liquid switching mechanism as described low viscosity liquid storage unit being connected with described inkjet head and making described lid produce negative pressure and described inkjet head is filled the front step of low viscosity liquid, having.
11. the method for maintaining of inkjet head according to claim 10 is characterized in that, when the printing ink initial stage is filled into communication member, carries out described the 1st step.
12. according to claim 5 or the maintenance agency of 6 described inkjet heads, it is characterized in that, described control part implement as front step, described ink containment section be connected with described inkjet head and fill the 1st step that printing ink arrives described liquid switching mechanism, wherein said front step makes described low viscosity liquid storage unit be connected with described inkjet head and makes described lid generation negative pressure and to described inkjet head filling low viscosity liquid.
13. the maintenance agency of inkjet head according to claim 12 is characterized in that, described the 1st step when described control part enforcement is filled into communication member with the printing ink initial stage.
14. the method for maintaining of inkjet head according to claim 1 and 2 is characterized in that, in being filled into the liquid of described ink gun, printing ink and lysate are discharged from described waste liquid tank, and low viscosity liquid is discharged from described again supply tank.
15. according to claim 5 or the maintenance agency of 6 described inkjet heads, it is characterized in that, in being filled into the liquid of described ink gun, printing ink and lysate are discharged from described waste liquid tank, and low viscosity liquid is discharged from described again supply tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210566878.2A CN103085494B (en) | 2006-12-26 | 2007-12-26 | The method for maintaining of inkjet head and mechanism and device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP350710/2006 | 2006-12-26 | ||
| JP2006350710A JP5147232B2 (en) | 2006-12-26 | 2006-12-26 | Inkjet head maintenance method, mechanism and apparatus |
| PCT/JP2007/074905 WO2008084690A1 (en) | 2006-12-26 | 2007-12-26 | Method, mechanism, and device for maintaining inkjet head |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210568470.9A Division CN103029446B (en) | 2006-12-26 | 2007-12-26 | Method, mechanism and device for maintaining inkjet head |
| CN201210566878.2A Division CN103085494B (en) | 2006-12-26 | 2007-12-26 | The method for maintaining of inkjet head and mechanism and device |
Publications (2)
| Publication Number | Publication Date |
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| CN101674939A CN101674939A (en) | 2010-03-17 |
| CN101674939B true CN101674939B (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210568470.9A Active CN103029446B (en) | 2006-12-26 | 2007-12-26 | Method, mechanism and device for maintaining inkjet head |
| CN201210566878.2A Active CN103085494B (en) | 2006-12-26 | 2007-12-26 | The method for maintaining of inkjet head and mechanism and device |
| CN2007800478628A Active CN101674939B (en) | 2006-12-26 | 2007-12-26 | Method, mechanism, and device for maintaining inkjet head |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210568470.9A Active CN103029446B (en) | 2006-12-26 | 2007-12-26 | Method, mechanism and device for maintaining inkjet head |
| CN201210566878.2A Active CN103085494B (en) | 2006-12-26 | 2007-12-26 | The method for maintaining of inkjet head and mechanism and device |
Country Status (6)
| Country | Link |
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| JP (1) | JP5147232B2 (en) |
| KR (3) | KR101475255B1 (en) |
| CN (3) | CN103029446B (en) |
| HK (3) | HK1179219A1 (en) |
| TW (1) | TWI417196B (en) |
| WO (1) | WO2008084690A1 (en) |
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| CN104290456B (en) * | 2014-09-24 | 2017-05-03 | 合肥海闻自动化设备有限公司 | Ink supply system for tire numeric printer |
| CN105172136B (en) * | 2015-07-30 | 2018-02-27 | 范春潮 | A kind of method using colored 3D printing device printing speed |
| CN105082538B (en) * | 2015-07-30 | 2018-02-27 | 范春潮 | A kind of nozzle component on fast colourful 3D printing device |
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| JP6576146B2 (en) * | 2015-07-31 | 2019-09-18 | 株式会社Ｓｃｒｅｅｎホールディングス | Coating apparatus and coating method |
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Also Published As
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|---|---|
| JP2008162023A (en) | 2008-07-17 |
| KR101475250B1 (en) | 2014-12-22 |
| KR101521900B1 (en) | 2015-05-20 |
| CN103085494B (en) | 2015-11-18 |
| KR20090106509A (en) | 2009-10-09 |
| WO2008084690A1 (en) | 2008-07-17 |
| JP5147232B2 (en) | 2013-02-20 |
| TW200836934A (en) | 2008-09-16 |
| KR20140025605A (en) | 2014-03-04 |
| CN101674939A (en) | 2010-03-17 |
| HK1179217A1 (en) | 2013-09-27 |
| CN103029446B (en) | 2015-06-17 |
| HK1138545A1 (en) | 2010-08-27 |
| CN103029446A (en) | 2013-04-10 |
| CN103085494A (en) | 2013-05-08 |
| HK1179219A1 (en) | 2013-09-27 |
| KR20140032484A (en) | 2014-03-14 |
| TWI417196B (en) | 2013-12-01 |
| KR101475255B1 (en) | 2014-12-22 |
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