CN101668636A - Cleaning device for liquid material discharge device - Google Patents
Cleaning device for liquid material discharge device Download PDFInfo
- Publication number
- CN101668636A CN101668636A CN200880013560A CN200880013560A CN101668636A CN 101668636 A CN101668636 A CN 101668636A CN 200880013560 A CN200880013560 A CN 200880013560A CN 200880013560 A CN200880013560 A CN 200880013560A CN 101668636 A CN101668636 A CN 101668636A
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- Prior art keywords
- wing
- roller
- ejection face
- cleaning
- butt
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools, brushes, or analogous members
-
- B08B1/50—
-
- B08B1/52—
-
- B08B1/54—
-
- 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
- B41J2/16535—Cleaning of print head nozzles using wiping constructions
- B41J2/16544—Constructions for the positioning of wipers
-
- 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
- B41J2/16535—Cleaning of print head nozzles using wiping constructions
- B41J2/16541—Means to remove deposits from wipers or scrapers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0006—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means to keep optical surfaces clean, e.g. by preventing or removing dirt, stains, contamination, condensation
Abstract
A cleaning device (1) provided in a liquid material discharge device (40) has a blade (21) coming into contact with a discharge surface to remove ink adhering to the discharge surface, a roller (3) coming into contact with the blade (21) to remove the liquid material, which was removed from the discharge surface, from the blade (21), and a motor (8) for moving the blade (21) from a position at which the blade (21) comes into contact with the discharge surface to a position at which the blade (21) comes into contact with the roller (3). While the blade (21) is in contact with the roller (3), the roller (3) is in uniform contact with the blade (21). The cleaning device can highly reliably clean the discharge surface of the liquid material discharge device, does not damage the discharge surface during cleaning, and can achieve stable discharge performance.
Description
Technical field
The present invention relates to a kind of cleaning device of liquid material discharge device, this cleaning device has ejection face wing, and this ejection face is used to wipe away (scraping) attached to the fluent material on the ejection face of liquid material discharge device with wing; And cleaning unit, this cleaning unit is used for removing with wing from above-mentioned ejection face and scrapes the fluent material that obtains, relate in detail a kind of cleaning unit with ejection face during with the wing butt relative ejection face with the wing even cleaning device of butt all the time.
Background technology
The liquid material discharge device of ink jet type etc. has the nozzle plate that is formed with a plurality of nozzles that are used for the atomizing of liquids material, and from the ejection of the nozzle plate that disposes ejiction opening towards being ejected material spare atomizing of liquids material (for example ink).Nowadays, from to aspect such as high printing efficiency, cost degradation, low operating costization be favourable, only the on demand piezoelectric type liquid material discharge device of the ink that ejection is necessary when printing has obtained concern, and heat foamable (thermal jet) formula then becomes main flow with kayser (Kyser) formula of using piezoelectric element.
When stating liquid material discharge device in the use, ink mist that ink droplet jet produces can take place and from being ejected ink mist that material spare splashes etc. attached to the situation on the ejection face.And above-mentioned attachment can bring the negative effect that hinders ink ejection, emission direction deflection to discharge performance.Therefore, in order to prevent the generation of above-mentioned situation, need remove cleaning action attached to foreign matters such as the ink on the ejection face, water and dusts.
As the clean method of removing attached to the ink on the ejection face, the main use wiped (scraping off) scraping and absorb these two kinds of methods of ink attached to the ink on the ejection face away.
As by scraping the structure of removing ink, the wing of the TR thin rubber system of use is arranged, the method that it is contacted with ejection face.But, when using TR thin rubber system wing to scrape, just scraping off attached to the ink on the ejection face and do not absorb ink, the ink that scrapes off sometimes can accumulate and pass wing between wing and ejection face.Therefore, the known structure (with reference to Fig. 9 of patent documentation 1) that a kind of absorption roller that also is provided with the member that absorbs ink except wing, for example makes with porous materials such as sponges is arranged.
In addition, also have and a kind ofly directly be pressed to the structure (with reference to patent documentation 2) of removing on the ejection face attached to the ink on the ejection face by forming reeded roller.Use Figure 13 that said structure is described.Figure 13 represents a kind of cleaning rollers 110, this cleaning rollers 110 on the roller surfaces alternately and be formed with protuberance member 103 long on the direction parallel continuously with roller axle 102, at 103 of members of protuberance and keep the shallow grooves 104 of ink, image pattern 13 slides abreast with ejection face like that on one side and rotates on one side, cleans ejection face while remove ink.As shown in figure 13, scraped the direction of advance that focuses on cleaning rollers 110 attached to the ink on the ejection face 100 150 by the sliding action of cleaning rollers 110.Meanwhile, a part of ink 152 is maintained at by capillarity in the groove 104 of cleaning rollers 110, removes from ejection face 100 in cleaning rollers 110 rotations.By above-mentioned effect, even concentrated by scraping and during the many state of the amount of becoming attached to the ink on the ejection face 100, owing to can keep the absorption ink in groove 104, so ink can not pass cleaning rollers, and can fully clean.
In addition, also has a kind of wing cleaning device (with reference to patent documentation 3) of removing the cleaning scraper blade of toner residual on the recording medium cylinder formed foreign matters such as (toner).Said structure comprises wing, this wing can with the cylinder surface butt of recording medium cylinder, and can remove butt and move to the regulation place.In addition, in the mobile route of above-mentioned wing, be equipped with the roller of transfer removal attached to the foreign matter on the wing.Above-mentioned roller is the structure that can absorb foreign matter as sponge, or sweeps off the structure of foreign matter as brush.According to said structure, can prevent from cylinder surface, to adhere to once more attached to the foreign matter on the wing.
In addition, thus also have a kind of roller and ejection face butt of making to shift removal attached to the ink on the ejection face, make wing and above-mentioned roller butt will shift the structure (with reference to patent documentation 4) that the ink after the removal is removed from roller again.Use Figure 14 that said structure is described.Cleaning device 200 shown in Figure 14 comprises rotation roller 208, this rotation roller is with nozzle plate 201 (comprise ejection face) the relative configuration of contactless state with ink gun 203, and the most approaching in the zone beyond the nozzle bore 202 that is configured to form on nozzle plate 201.Between nozzle plate 201 and rotation roller 208, fill up the ink of discharging from nozzle bore 202.Rotation roller 208 constitutes bigger than near the wettability of the lower surface (nozzle bore 202) of nozzle plate 201, the ink that fills up between rotation roller 208 and the nozzle plate 201 diffuses into terminal wide form from nozzle plate 201 sides towards rotation roller 208 sides, by the rotation of rotation roller 208, last above-mentioned ink is transferred to rotation roller 208 sides and removes.And cleaning device 200 also comprises with the surperficial butt of rotation roller 208 also can be removed attached to the vulcanite scraper blade 210 that rotates roller 208 lip-deep inks 204.According to said structure, in the cleaning device 200, even when when on rotation roller 208, shifting removal amount ink 204 how and by the rotation roller cleaning action being continued for a long time, ink on the rotation roller also can be shifted by the vulcanite scraper blade and remove, and, therefore can remove foreign matters such as ink from the lower surface of nozzle plate 201 all the time owing to form the structure that above-mentioned ink also can be removed from the vulcanite scraper blade.
Patent documentation 1: day disclosure special permission communique " spy open 2005-22193 communique (open day: on January 27th, 2005) "
Patent documentation 2: day disclosure special permission communique " spy open flat 6-255117 communique (open day: on September 13rd, 1994) "
Patent documentation 3: the practical new case communique of day disclosure " open in fact clear 63-94468 communique (open day: on June 17th, 1986) "
Patent documentation 4: day disclosure special permission communique " spy open 2006-192711 communique (open day: on July 27th, 2006) "
But under the situation of above-mentioned each structure, existence can't ensure the problem of stable ink ejection.
That is, for example in patent documentation 2, when irregular roller surfaces was contacted with the ejection face of nozzle plate, ejection face may be by above-mentioned concavo-convex damage.The ejection face of nozzle plate is because its shape is big to the discharge performance influence, and therefore if as mentioned above ejection face is caused damage, then discharge performance can significantly reduce.
In addition, even if make,, then also may therefore cause damage to wing if the roller of cleaning scraper blade is sponge or brush as the wing of patent documentation 3 and the ejection face butt of nozzle plate, by scraping of impaired wing, the result can cause damage to ejection face.
And, when the member of cleaning scraper blade has the structure that absorbs attached to the fluent material on the wing as sponge and brush, then need high frequency ground to change above-mentioned member, be difficult to realize the lifting of cost performance.
On the other hand, as patent documentation 4, be equipped with when supporting the rotation roller of relative configuration with contactless state and nozzle plate, be difficult to make the rotation roller accurately with ejection face butt, particularly when the area of ejection face is connected on a plurality of ejection faces greatly or simultaneously, must make rotation roller and all ejection faces butt equably, thereby require to have very high precision.Therefore, cost performance is low, and ejection face is difficult to cleaning fully, we can say the poor reliability of cleaning.
Summary of the invention
Therefore, invention forms according to the problems referred to above in the present invention, its purpose is to provide a kind of cleaning device of liquid material discharge device, this cleaning device can carry out to high reliability the cleaning of the ejection face of liquid material discharge device (nozzle plate), and can eliminate cleaning to the damage that ejection face causes, realize stable discharge performance.
For addressing the above problem, cleaning device of the present invention is a kind of cleaning device of removing attached to the fluent material on the ejection face of liquid material discharge device, it is characterized in that comprising: ejection face wing, this ejection face is used to remove the fluent material attached on the ejection face with wing and above-mentioned ejection face butt; Cleaning unit, this cleaning unit and above-mentioned ejection face wing butt are used to the ejection face of removing with the fluent material of removing from above-mentioned ejection face on the wing; And driver element, this driver element is used for above-mentioned ejection face is moved to position with above-mentioned cleaning unit butt with wing from the position with above-mentioned ejection face butt, above-mentioned cleaning unit is with above-mentioned ejection face during with the wing butt, with ejection face with the even butt of wing.
According to said structure, can carry out the cleaning of the ejection face of liquid material discharge device (nozzle plate) to high reliability, and can eliminate cleaning the damage that ejection face causes, realize stable discharge performance.
Specifically, cleaning device of the present invention uses ejection face to remove attached to the fluent material on the ejection face with wing.Therefore, compare when using roller, can improve the efficient of removing of fluent material on the ejection face.That is, as mentioned above, when making the structure of roller and ejection face butt, can remove fluent material from ejection face fully hardly, we can say the poor reliability of cleaning.On the contrary, therefore cleaning device of the present invention can not produce the problems referred to above, and can spray the cleaning of face with high reliability owing to use wing.
In addition, cleaning device of the present invention also comprises above-mentioned cleaning unit, and this cleaning unit and above-mentioned ejection face wing butt are used for removing fluent material from ejection face with wing.Therefore, can not accumulate fluent material more than the ormal weight on wing, even can remove fluent material from ejection face when therefore using ejection face with wing repeatedly for a long time with high reliability at ejection face yet.
And above-mentioned cleaning unit is with above-mentioned ejection face during with the wing butt, with ejection face with the even butt of wing.If make roller butt structure or that have the structure of protuberance member and groove of porous materials such as wing and sponge according to existing structure, then may cause damage to wing owing to the concaveconvex shape of this structure.On the contrary, the cleaning unit of cleaning device of the present invention and ejection face be with the even butt of wing, promptly do not form to cause the concaveconvex shape of damage with wing to ejection face, but on level and smooth table with ejection face wing butt.Therefore, can not cause damage with wing, can remove fluent material with wing, and can keep stable discharge performance from ejection face to ejection face.In addition, " smoothly " was though both comprised level and smooth situation also comprises it not being fully smoothly not damage the situation of ejection face with level and smooth (just substantial level and smooth) of wing degree fully.
As above-mentioned cleaning unit, the cleaning unit that is made of metal is for example arranged and to carrying out the cleaning unit that the resin after the lyophily processing is made with the face of wing butt with above-mentioned ejection face.
In addition, according to said structure,, therefore remove the fluent material on the cleaning unit easily as sponge and brush because cleaning unit is not the structure that absorbs attached to the fluent material on the wing.Specifically, can consider as described later the cleaning unit cleaning fluid that drips is cleaned attached to the structure of the fluent material on the cleaning unit and by constituting with the member (wing) of cleaning unit butt and removes structure attached to the fluent material on cleaning unit.Therefore, do not need high frequency ground replacing sponge or brush as in the past, the lifting of realizability price ratio.
Therefore, according to structure of the present invention, can provide a kind of cleaning device of realizing the high reliability of stable discharge performance.
In addition, cleaning device of the present invention is except said structure, and comparatively it is desirable to above-mentioned cleaning unit is roller.
In view of the above, make roller in rotation with above-mentioned ejection face wing butt, can remove attached to ejection face with the fluent material on the wing.
In addition, cleaning device of the present invention comparatively it is desirable to also comprise the mechanism of removing of the fluent material of removing with wing from above-mentioned ejection face removed on the above-mentioned cleaning unit except said structure.
According to said structure, owing to can remove fluent material from above-mentioned cleaning unit, even therefore carry out cleaning action for a long time, also needn't worry attached to the fluent material on the above-mentioned cleaning unit can be once more attached to ejection face with on the wing, and ejection face can be kept the state that can remove fluent material from ejection face well with wing.
Specifically, comparatively it is desirable to the above-mentioned mechanism of removing and have wing with above-mentioned cleaning unit butt.
In view of the above, can be shifted removal by above-mentioned wing attached to the fluent material on the cleaning unit.
In addition, as other structure, comparatively it is desirable to the above-mentioned mechanism of removing has: cleaning unit wing, this cleaning unit be with wing and above-mentioned cleaning unit butt, shifts the fluent material of removing with wing from above-mentioned ejection face on the above-mentioned cleaning unit of removal; And absorber, this absorbent body is shifted the fluent material of removing by above-mentioned cleaning unit with wing.
In view of the above, can be shifted by above-mentioned wing attached to the fluent material on the cleaning unit and to remove, and, shifted the fluent material of removing by absorbent body by wing, can prevent that being shifted the fluent material of removing by above-mentioned wing drips and get back on the cleaning unit.As absorber, the absorber of porous materials such as sponge is for example arranged.
In addition, cleaning device of the present invention is except said structure, and comparatively it is desirable to above-mentioned cleaning unit is roller, and above-mentioned cleaning unit is compared wider width on the bearing of trend of the rotating shaft of above-mentioned roller with wing and above-mentioned ejection face with wing.
According to said structure, above-mentioned ejection face is with wing and roller surfaces butt, is transferred on the roller surfaces with the fluent material on the wing attached to ejection face and removes, at this moment, on roller surfaces, it is outer and adhere to the above-mentioned width of wing that fluent material generally can be diffused into ejection face.Therefore, if it is identical or littler with the above-mentioned width of wing than ejection face with the above-mentioned width of wing with ejection face with the above-mentioned width of wing to remove the cleaning unit of mechanism, even then remove action with wing, shift the fluent material of removing from ejection face with wing and also can remain on the roller surfaces by cleaning unit.In addition, remain in fluent material on the roller surfaces as mentioned above and can be along with effluxion be accumulated and become big and solidify, therefore, cleaning unit with wing and ejection face with wing can't with the even butt of roller surfaces, wing is caused damage.Therefore, according to structure of the present invention because that cleaning unit constitutes with the above-mentioned width of wing is wideer with the above-mentioned width of wing than ejection face, thus can be on roller surfaces the residual liquid material, can remove fluent material well from roller surfaces.
In addition, cleaning device of the present invention comparatively it is desirable to the above-mentioned mechanism of removing and has the drip unit that drips of liquid of above-mentioned cleaning unit except said structure.Specifically, the aforesaid liquid that drips by the above-mentioned unit that drips can use and contain the liquid of removing attached to the composition of the fluent material on the above-mentioned cleaning unit.
According to said structure, can be by removing attached to the fluent material on the cleaning unit from the unit dripping that drips.
In addition, cleaning device of the present invention comparatively it is desirable to except said structure, and the above-mentioned mechanism of removing has the drip unit that drips of liquid of above-mentioned cleaning unit on the position at the above-mentioned width two ends of the above-mentioned above-mentioned wing of removing mechanism.Specifically, same as described above, the aforesaid liquid that drips by the above-mentioned unit that drips can use and contain the liquid of removing attached to the composition of the fluent material on the above-mentioned cleaning unit.
According to said structure, even be diffused into the outside of the above-mentioned width of the wing of removing mechanism attached to the fluent material on the cleaning unit, become the state that to remove by the wing of removing mechanism, on the position outside the above-mentioned width of the wing of removing mechanism, the aforesaid liquid owing to drip from the above-mentioned unit that drips, therefore can be on cleaning unit the residual liquid material, the cleaning of high reliability can be provided.
In addition, cleaning device of the present invention comparatively it is desirable to comprise except said structure: the tooth bar that forms as one with wing with above-mentioned ejection face and link with above-mentioned roller and with the swing pinion mechanism of tooth bar interlock.
According to said structure, because along with ejection face is moved by above-mentioned driver element with wing, tooth bar also one moves, and therefore by linking with the swing pinion mechanism and the above-mentioned roller of above-mentioned tooth bar interlock, can make the rotation interlock of ejection face with the mobile and roller of wing.
That is,, therefore can reduce component count, and compare, because therefore the power consumption that does not need the roller rotation to drive can suppress power consumption with the rotary drive unit that roller is set separately owing to above-mentioned driver element can be also used as the rotary drive unit of roller.
In addition, cleaning device of the present invention is except said structure, comparatively it is desirable to above-mentioned cleaning unit with above-mentioned ejection face be 0.1～2.0 with the surface roughness Ra of the face of wing butt.
In view of the above, can not cause damage with wing, can remove attached to ejection face with the fluent material on the wing ejection face.In view of the above, can not scraped, can not cause damage, can keep stable discharge performance ejection face by impaired wing.
In addition, cleaning device of the present invention comparatively it is desirable to the littler with the contact angle with face above-mentioned cleaning unit butt wing than above-mentioned ejection face with the contact angle of the face of wing butt with above-mentioned ejection face of above-mentioned cleaning unit except said structure.
According to said structure, above-mentioned cleaning unit have more lyophily than above-mentioned ejection face with the face with above-mentioned cleaning unit butt of wing with the face of wing butt with above-mentioned ejection face.Therefore, good with wing when removing attached to ejection face with the fluent material on the wing to the liquid metastatic of cleaning unit from ejection face by cleaning unit, and can remove expeditiously.
In addition, in order to improve as mentioned above from ejection face with wing, also can carry out the lyophily processing with above-mentioned ejection face on the face of wing butt at above-mentioned cleaning unit to the liquid metastatic of cleaning unit.
In addition, the feature of liquid material discharge device of the present invention is cleaning device and the ink gun that comprises said structure, and this ink gun constitutes can be from ejection face ejection fluent material.
According to said structure, can provide a kind of liquid material discharge device that can keep the high reliability of stablizing discharge performance.
Other purposes of the present invention, feature and advantage will be fully understood by following narration.In addition, advantage point of the present invention will be able to clearly by the following explanation that the reference accompanying drawing carries out.
Description of drawings
Fig. 1 represents to comprise the figure of structure of an embodiment of the liquid material discharge device of cleaning device of the present invention.
Fig. 2 represents a structure of the major part of liquid material discharge device shown in Figure 1, be expression along cutting line A-A ' shown in Figure 1 dissect after this major part to looking cutaway view.
Fig. 3 is the plane of the structure of the wing that is provided with of expression cleaning device of the present invention.
Fig. 4 be expression to have on the one side face of scolding fluidity part and lyophily part just dripped drop after the time state of observation drop and the result's that obtains figure.
Fig. 5 is the cutaway view that is illustrated in the contact angle when being formed with drop respectively on the face that has the face of scolding fluidity and have lyophily.
Fig. 6 is the plane of other structures of the wing that is provided with of expression cleaning device of the present invention.
Fig. 7 is the stereogram of a structure of the major part of expression liquid material discharge device shown in Figure 1.
Fig. 8 is the stereogram of a structure of the major part of expression liquid material discharge device shown in Figure 1.
Fig. 9 is the stereogram of a structure of the major part of expression liquid material discharge device shown in Figure 1.
Figure 10 is the cutaway view of a structure of the major part of expression liquid material discharge device shown in Figure 1, (a) be the cutaway view that expression will be attached to the stage that roller that the ink at the wing back side that cleaning device is provided with is provided with by cleaning device removes, (b) be the cutaway view of removing action stage of finishing of the expression ink that is attached to the wing back side, the cutaway view in the stage that (c) to be the expression ink that will be attached to the wing surface remove by roller.
Figure 11 is the cutaway view of removing the stage that action finishes of the expression ink that is attached to wing table back of the body two sides.
Figure 12 is the figure of the relation between the action of the driving control of the motor that is provided with of expression cleaning device and cleaning solution supplying unit.
Figure 13 is the figure of expression prior art.
Figure 14 is the figure of expression prior art.
(symbol description)
1 cleaning mechanism (cleaning device)
2 nozzle wing mechanisms (ejection face wing)
3 rollers (cleaning unit)
4 cleaning scraper blades
The width of 4H cleaning scraper blade
5 cleaning solution supplying unit (unit drips)
6 remove the unit
7 pump units
8 motor (driver element)
9 guide rails
10 tooth bars (rack gear)
11 first swing pinions
12 second swing pinions
21 wings (ejection face wing)
The 21a back side
The 21b surface
21c scolds fluidity part (abutment portion)
21d lyophily part (part beyond the abutment portion)
The width of 21H wing
24 fixed cells
24 ' hole portion
25 recesses
26 absorbers
27 pipe portions
31 colour mixtures prevent portion
40 liquid material discharge devices
50a, 50b, 50c ink gun
51 nozzle plates
52 nozzle bores
60 waste fluid containers
61 magnetic valves
62 pumps
The specific embodiment
According to Fig. 1 to Figure 12 one embodiment of the present invention is described.In addition, in the following description, added comparatively desirable technically various qualifications in order to implement the present invention, but scope of the present invention is not limited to following embodiment and accompanying drawing.
Fig. 1 is the figure of structure of the ink jet type liquid material discharge device (following note do " liquid material discharge device ") of expression present embodiment.Liquid material discharge device 40 in the present embodiment can will be for example red (R), blue (B), green (G) trichromatic ink be ejected to a use when being ejected material spare and making the colour filter of forming by three kinds of filters (filter) of R, B, G (color filter).Therefore, in the present embodiment the liquid material discharge device that sprays R, B, three kinds of inks of G is described.
As shown in Figure 1, the liquid material discharge device 40 of present embodiment comprises at least: R, B, G each ink gun 50a, 50b, 50c; Cleaning mechanism (cleaning device) 1, this cleaning mechanism are used to clean the nozzle face (ejection face) that is arranged on the nozzle plate on ink gun 50a, 50b, the 50c.
On the position relative of above-mentioned ink gun 50a, 50b, 50c, be provided with nozzle plate 51 with being ejected material spare (not shown).Said nozzle plate 51 can use well-known in the past material to make, and also can use resin and metal to make.When using metal, durability, wearability height, and when using resin, the nozzle bore handling ease.
On each nozzle plate 51, be provided with a plurality of nozzle bores 52.Nozzle bore 52 is in the ejection face upper shed of nozzle plate 51, and forms predetermined arrangement on each ejection face.In the present embodiment, the nozzle bore 52 that forms on each ejection face is arranged in the linearity that X-axis shown in Figure 1 relatively and Y-axis tilt with predetermined angular.In addition, the arrangement of nozzle bore 52, size and quantity are not limited to arrangement shown in Figure 1, size and quantity.
In addition, in the present embodiment, the structure that ink gun 50a, 50b, 50c is included only nozzle plate 51 describes, but the present invention is not limited to this, can also install the member of formation of well-known ink gun in the past.For example can installing on ink gun 50a, 50b, the 50c be used for to ink gun supply with ink ink tank, be arranged on the ink supply conduit between ink tank and ink gun.
Because above-mentioned ink gun sprays liquid ink as described above or stops to spray liquid ink, therefore have on the ejection face of ink attached to the nozzle plate of ink gun through long-time the use.Still continue to use if adhering to the ink gun of ink like this, then the ejection angle of Pen Chu ink can change because of the ink that is adhering to.Especially, be high-precision because of its pixel and width is about 200 μ m at the colour filter that uses on the liquid crystal panel, the ejection precision that therefore requires to be used to make the ink discharge device of this colour filter is below the 10 μ m.In order to keep the above-mentioned ejection precision of colour filter manufacturing installation for a long time, it is normal to remain ejection face, on the ejection face fluent material adhere to and damage can make the ejection deterioration in accuracy.Therefore, in the present embodiment, comprise cleaning mechanism 1, so just can remove, address the above problem attached to the ink on the ejection face of nozzle plate with following structure.
Specifically, as shown in Figure 1, above-mentioned cleaning mechanism 1 comprises at least: nozzle wing mechanism 2, and this nozzle wing mechanism can scrape the ejection face of the said nozzle plate 51 parallel with X-Y plane; Roller 3, this roller form 2 butts with said nozzle wing mechanism; Cleaning scraper blade 4 (removing mechanism, cleaning unit wing), this cleaning scraper blade is used to clean above-mentioned roller 3; And cleaning solution supplying unit 5 (remove mechanism, the unit drips), this cleaning solution supplying unit is used for supplying with cleaning fluids to above-mentioned roller 3.
Said nozzle wing mechanism 2 has wing 21 and erecting bed 22, and this erecting bed is used to install above-mentioned wing 21.Above-mentioned wing 21 will be parallel under the state that does not apply external pressure with the Z axle of Fig. 1 the face that scrapes (vertical plane) be arranged at the table back of the body two sides 21a, 21b, and be installed on the erecting bed 22 with the state that can break away from.The corresponding respectively ink gun 50a that arranges along Y direction～50c is provided with and amounts to three wings 21.Wing 21 is the state configuration to separate a little on Y direction mutually each other, and installs with the state that staggers on X-direction a little in mutual position.
Said nozzle wing mechanism 2 constitutes by the X-direction of driver element described later along Fig. 1 and drives.Fig. 2 be expression along cutting line A-A ' shown in Figure 1 dissect after the nozzle wing mechanism 2 to looking cutaway view.In addition, also represented ink gun 50a for convenience of description.The driving that nozzle wing mechanism 2 passes through aftermentioned driver element (motor), can be carried out single shaft with its a part of ejection face butt one edge ejection face with nozzle plate 51 on one side and move by the further driving of driver element as shown in Figure 2 near ink gun 50a.In view of the above, ejection face can be scraped by wing 21.
Fig. 3 is the plane of the face that scrapes of expression wing 21.The face that scrapes of wing 21 is the identical structures in the table back side, has to present part of scolding fluidity and the part that presents lyophily in one side.Specifically, as shown in Figure 3, the abutment portion with ejection face butt on the face of wing 21 is scolded fluidity, and the part beyond the abutment portion then is a lyophily.
At this, use Fig. 4 (a)～(c) to describe to using the drop state that in one side, has when presenting the part (following note makes to scold the fluidity part) of scolding fluidity and the substrate of the part (following note is made the lyophily part) that presents lyophily and on this substrate, droplet drop being arranged.At first, Fig. 4 (a) is that drop is being scolded on the fluidity part and only a little state that enters the position on the lyophily part.Arrow among the figure is represented gravity direction.Drop after dripping to this position soon, just beginning is partly moved to lyophily shown in Fig. 4 (b).Then, after the longer time, this locational drop is positioned on the lyophily part shown in Fig. 4 (c) fully.Like this, scold fluidity part and lyophily part, to can be observed along with effluxion, scold the drop of fluidity on partly can be to the partly mobile phenomenon of lyophily by in one side, forming.
In addition, scold the contact angle that fluidity part and lyophily part are dripped the drop that has respectively comparatively to it is desirable to differ more than 20 °.If above-mentioned phenomenon then may not can take place less than 20 ° in the difference of contact angle.Specifically, comparatively to it is desirable to be 60 °～80 ° to the lyophily contact angle of partly going up drop.On the other hand, comparatively to it is desirable to be 100 °～120 ° to the contact angle of scolding fluidity partly to go up drop.Fig. 5 represents to scold the contact angle on fluidity part and the lyophily part.
In the present embodiment, in the same one side of wing 21, be provided with and scold fluidity part 21c and lyophily part 21d in order to using above-mentioned phenomenon.Promptly, wing 21 shown in Figure 3 is mounted on erecting bed 22 that to scrape face 21a, 21b parallel with the Z axle, as shown in Figure 2, wing is when being attached with the ejection face butt of ink, and the ink of ejection face can be transferred on the abutment portion 21c as the wing 21 (scraping face 21,21b) of scolding the fluidity part and be removed.At this moment, the ink that is transferred removal is being scolded mobile going forward side by side into lyophily part 21d on the abutment portion 21c of fluidity along gravity direction.Like this, along with effluxion, ink moves to the lyophily part because of above-mentioned phenomenon.At this and since the liquid material discharge device in the present embodiment with direction shown in the arrow among Fig. 2 as gravity direction, therefore can promote the mobile of above-mentioned ink.In addition, when the amount of the ink that moves to lyophily part 21d viscosity many or ink was low, this ink can further flow down to erecting bed 22 from the lyophily part.
As shown in Figure 2, wing 21 is fixed on the big or small roughly the same fixed cell 24 of big or small and the recess 25 that erecting bed 22 is provided with, and unit 24 fixing states insert above-mentioned recess 25 to be fixed.Therefore, in the ink that moves to lyophily part 21d, the ink that flows down to erecting bed 22 flow into the hole portion 24 ' that said fixing unit 24 is provided with.Because this hole portion 24 ' is the diameter that forms in vertical direction is micropore about 1mm, and the ink after therefore flowing into is worn via portion 24 ' because of capillarity, moves to the bottom of the recess 25 of erecting bed 22.
Bottom at the recess 25 of above-mentioned erecting bed 22 is provided with absorber 26 along X-Y plane.Therefore, the ink of bottom that moves to the recess 25 of erecting bed 22 is absorbed by above-mentioned absorber 26.
And, in the bottom of the recess 25 of above-mentioned erecting bed 22, with an end of the pipe portion 27 of external communications be opening.Pipe portion 27 is connected with the waste fluid container 60 of outside.And, between concave bottom and waste fluid container 60, be provided with magnetic valve 61 and pump 62.Therefore, when making pump 62 runnings and opening magnetic valve 61, being absorbed body 26 ink absorbed can discharge to the outside of nozzle wing mechanism 2 by pipe portion 27.
As mentioned above, in the present embodiment, wing inserts recess 25 with the unit 24 fixing states that are fixed.Therefore, when needs are changed wing 21, it can be unloaded and install the new wing 21 of predetermined fixed on fixed cell 24 together with fixed cell 24 from erecting bed 22.Scraping action need carry out under the situation that can not wear the ejection of nozzle plate 51 such as negative effects such as damage ejection faces.Therefore, need to adjust nozzle wing mechanism 2, concerning wing 21, giving the pressure of ejection face and butt angle etc. when scraping will have high accuracy.But, on the other hand, scrape action (upkeep operation) and require in the gap that the ejection of colour filter manufacturing streamline is moved, to carry out, and carry out the replacing of wing 21 between needing at this moment with few time.Therefore, when being directly installed on wing 21 on the erecting bed 22,, therefore may install rapidly and accurately because wing 21 has elasticity.Therefore, in the present embodiment, as mentioned above wing 21 is fixed on the fixed cell 24 in advance accurately, the recess 25 so simple actions by said fixing unit 24 being installed on erecting bed 22 just can be installed in wing 21 on the erecting bed 22 rapidly and accurately.
In addition, the part beyond the abutment portion of wing 21 shown in Figure 3 all is a lyophily.But the present invention is not limited to this, also can be wing 21 ' shown in Figure 6.In the wing 21 ' shown in Figure 6, the part of the lyophily part 21d of wing 21 shown in Figure 3 is scolded fluidity.Specifically, scold fluidity part 21c ' and lyophily part 21d to form elongate, and scold fluidity part 21c ' and lyophily part 21d alternately to arrange in the direction of leaving from the above-mentioned abutment portion of wing 21.Even make by said structure, identical with wing 21 shown in Figure 3, also can not produce ink in the abutment portion of wing 21 and accumulate, can keep the cleaning effect of ejection face by wing 21.
Above-mentioned roller 3 is configured in the mobile route of nozzle wing mechanism 2, so as can with wing 21 butts.Specifically, the roller axle 32 of roller 3 is positioned at roughly the same height with the ejection face of nozzle plate 51, and roller 3 disposes on predetermined distance ground along X-direction at interval with nozzle plate 51.In view of the above, by scraping wing 21 that ejection face removes ink transfer when X-direction moves, can with the surperficial butt of the roller axle below of roller 3, pass through butt, can promptly, can remove ink (with reference to Fig. 7) with the ink transfer on the wing 21 to roller 3 surfaces from wing 21.In the present embodiment, roller 3 is illustrated in figure 1 as cylindric, and to constitute to be that rotating shaft is rotated with above-mentioned roller axle 32 by the aftermentioned driver element.
The surface of roller 3 presents the surperficial high lyophily than wing 21, and with the zone of wing 21 butts in be not have concavo-convex structure.What is called does not have concavo-convex structure, and the surface that is meant roller 3 is not to be the porous material or to be formed with protrusion and the structure of groove, make roller 3 with the state of wing 21 butts under be rotating shaft when being rotated with the roller axle, roller 3 and wing 21 even butts.Roller 3 in the present embodiment constitutes: at least with the zone of wing 21 butts in, the length on 3 surfaces from the roller axle to the roller (being the radius of roller 3) all equates anywhere or is equal in fact.
Specifically, comparatively to it is desirable to be more than 0.1 and below 2.0 to the surface roughness Ra on the surface of roller 3.If Ra is little than 0.1, then the lyophily on the surface of roller 3 can be lower than the lyophily on the surface of wing 21, ink can not be shifted removals from wing 21.On the other hand, if Ra is bigger than 2.0, then can cause damage to the wing 21 of butt.As mentioned above, if wing 21 is caused damage, then the result can cause damage to the ejection face of nozzle plate 51, causes the change of shape (deterioration) of ejection face, thereby can not obtain stable discharge performance.Therefore, the Ra on the surface of roller 3 comparatively it is desirable in 0.1～2.0 scope.In addition, when wing 21 was fluorubber such as FFKM, even more ideal was that Ra is more than 0.4 and below 1.2.Wherein, ideal is that Ra is about 0.8.
As the material on the surface of roller 3, can use the resin of PTFE etc.By using resin, the roller that the surface roughness that is formed by machining is little can obtain at an easy rate by machining.In addition, the strong resin of drug resistance is arranged also, compares with formed in mould rubber system roller with needs, can realize on the cost and performance on all good roller.When using resin, be the lyophily that obtains wishing, need carry out lyophily processing (plasma treatment and ashing etc.).
In addition, among the present invention, the material as the surface of roller 3 is not limited to resin, also can use metals such as stainless steel (for example SUS304), aluminium, brass to make.By using metal, the little roller of surface roughness of the mirror finish that is formed by machining etc. can obtain at an easy rate by machining, and from the drug resistance aspect, the Material Selection scope is also wide.The fluent material that sprays in the liquid material discharge device is diversified, if metal roller, then can corresponding various fluent materials, because can loss, thereby the frequency that can also suppress to change.
In addition, Ra then can produce the lyophily problem for a short time than 0.1 though the front has illustrated, carries out the lyophily processing as if the surface of pair of rollers 3, even then Ra is little also more passable than 0.1, and it is also passable to be polished to the material of mirror-like.If Ra is littler and be polished to the situation of mirror-like than 0.1, then compare with the roller that adopts Ra to be in the above-mentioned scope, can further suppress the damage that wing 21 is caused.
The length of roller 3 (length that roller axle makes progress) for can with the length of three wings, 21 whole butts on the erecting bed 22.In view of the above, mutually on X-direction, stagger configuration three wings 21 successively with roller 3 butts.
Lip-deep and the colour mixture that is provided with convex between wing on the erecting bed 22 21 and wing 21 along corresponding position, the gap of Y direction setting of roller 3 prevents portion 31.In the present embodiment, owing to be the structure of ejection R, B, three kinds of inks of G, therefore if the radius of roller 3 is uniform in the whole axial length scope of roller 3, the colour mixture of R, B, three kinds of inks of G then may take place on roller 3 surfaces, if the ink after the colour mixture is former thereby be stained with on the wing 21 because of certain, then can the color accuracy of ink-jet significantly be reduced at the ink after adhering to colour mixture on the ejection face of each ink gun.Therefore, prevent portion 31, can prevent that each chromatic ink after adhering on the surface of roller 3 from mixing and the generation colour mixture by above-mentioned colour mixture is set.Prevent the height (protuberance length) of portion 31 as long as make the various inks can colour mixture from surface (with the area part of the wing 21 butts) colour mixture of counting of roller 3, do not do special qualification.
Above-mentioned cleaning scraper blade 4 is provided with for the lip-deep ink of removing attached to roller 3, at the position of the cleaning action of the wing 21 that does not hinder roller 3 to carry out and roller 3 butt all the time.Specifically, as shown in Figure 1, cleaning scraper blade 4 comparatively it is desirable to above roller axle and roller 3 surperficial butts.Cleaning scraper blade 4 and above-mentioned wing 21 are made by elastomeric material equally, constitute with roller 3 lip-deep above-mentioned colour mixtures and prevent portion 31 regional butt in addition.In view of the above, can not cause damage just can remove in pair of rollers 3 surfaces attached to roller 3 lip-deep inks.
In addition, constitute length long (width is big) along the length (width) of the cleaning scraper blade 4 of roller axle 32 than wing 21.This is represented with Fig. 7.As shown in Figure 7, the width 4H of cleaning scraper blade 4 constitutes bigger than the width 21H of wing 21.According to said structure, spread on the surface of roller 3 even be transferred to the ink of also removing on the roller 3 from wing 21, ink also can be removed from roller 3 efficiently by the cleaning scraper blade 4 of big width.
In the present embodiment, as shown in Figure 1, it is unilateral parallel with X-Y plane that cleaning scraper blade 4 is arranged to its scraper.But, the present invention is not limited to this, on lower coating blade in the ink transfer that makes roller 3 is unilateral to scraper up and down is unilateral and during the structure of removing, cleaning scraper blade 4 also can angle according to the rules tilt, with under the state that connects with roller 3 surfaces, the butt with surperficial butt roller 3 cleaning scraper blade 4 is in is positioned on the gravity direction than other the local positions on the cleaning scraper blade 4 near tops.Cleaning scraper blade 4 is tilted, and the wing 4 that is cleaned shifts the ink of removing and moves because of the direction that gravity leaves towards the butt with roller 3 surperficial butts from cleaning scraper blade 4 easily.Therefore, the wing 4 of needn't worrying to be cleaned shifts the ink droplet of removing and gets back on the surface of roller 3, and is comparatively desirable.
As shown in Figure 1, above-mentioned cleaning solution supplying unit 5 constitutes the cleaning fluid that can drip from the surface of the last direction roller 3 of the roller axle of roller 3.The cleaning fluid that drops onto roller 3 surfaces spreads on the surface of roller 3, thereby makes the adhesive force reduction attached to the lip-deep ink of roller 3, has the effect of removing efficient that improves cleaning scraper blade 4.
As cleaning fluid, can use the solvent of ink etc.With regard to the amount of dripping, consider the volatility of cleaning fluid etc., so long as the amount that cleaning fluid can not be transferred on the wing gets final product, for example can be the structure of 0.05cc of when at every turn carrying out roller matting described later, dripping.
Use Fig. 8 that cleaning solution supplying unit 5 is elaborated.Fig. 8 is the stereogram that the position of dripping to cleaning solution supplying unit 5 describes.As shown in Figure 8, cleaning solution supplying unit 5 be adapted to beyond the portion that can prevent in the lip-deep above-mentioned colour mixture of roller 3 31 and not with the zone of cleaning scraper blade 4 butts in the cleaning fluid that drips.The cleaning fluid that drips in above-mentioned zone is diffused into the zone of representing with oblique line among Fig. 8.The above-mentioned zone of representing with oblique line is the part of the residual probably ink that can't be removed by cleaning scraper blade 4.By with cleaning scraper blade 4 butts, though only have, roller 3 lip-deep inks are diffused into beyond the butt zone of cleaning scraper blade.If the above-mentioned butt zone ink in addition that is diffused into cleaning scraper blade is accumulated for a long time, the ink of then accumulating may enter the butt zone of cleaning scraper blade.The long-time like this ink of accumulating is at the state that can be solidified on the surface of roller 3 after the drying can't be removed by cleaning scraper blade 4.Therefore, along with the rotation of roller 3, cleaning scraper blade 4 can touch the ink piece after the curing, cause can't with the state of the correct butt in surface of roller 3.Therefore, in Fig. 8 with in the zone of grey colour specification by cleaning solution supplying unit 5 cleaning fluid that drips, thereby can remove the ink after the above-mentioned curing, and make cleaning scraper blade 4 and the correct butt in the surface of roller 3, thereby can normally realize the cleaning action of cleaning scraper blade 4.
Being removed unit 6 as shown in Figure 1 attached to the ink on the cleaning scraper blade 4 removes from cleaning scraper blade 4.Remove unit 6 and for example can make, adhere to, be accumulated in the lip-deep ink of cleaning scraper blade 4, ink can be removed from cleaning scraper blade 4 by above-mentioned absorbent body by the absorber of porous materials such as sponge.The ink that is absorbed bulk absorption can aspirate by pump unit shown in Figure 17, and is discharged to outside the liquid material discharge device as waste liquid.In addition, as pump unit 7, also can dual-purpose pump 62 shown in Figure 2.
Followingly the driving mechanism of nozzle wing mechanism 2 and the rotating mechanism of roller 3 are described according to Fig. 9.Fig. 9 is the plane of liquid material discharge device 40 along the X-Z plane.In addition, in Fig. 9 reduced representation the structure of nozzle wing mechanism 2.
As shown in Figure 9, nozzle wing mechanism 2 utilizes wing 21 to scrape the ejection face of nozzle plate 51 by moving on (X-axis) direction, after scraping, makes the wing 21 and roller 3 butts that are attached with ink.Therefore, cleaning mechanism 1 comprises as being used to make nozzle wing mechanism 2 motor 8 of mobile driver element as described above.
Above-mentioned motor 8 is by revolving force (rotatablely move) the conversion straight propulsive force (horizontal movement) of ball screw framework with motor, thereby the realization single shaft moves.Nozzle wing mechanism 2 carries out single shaft by the driving of motor 8 along the guide rail 9 that is provided with and moves on cleaning mechanism 1.Be described in detail in the back.Motor 8 is provided with the control part that drives control.In the back the driving control of being undertaken by motor 8 is described.
In the cleaning mechanism 1, the mechanism as making roller 3 rotations comprises tooth bar 10, first swing pinion 11 and second swing pinion 12.
As shown in Figure 9, above-mentioned tooth bar 10 constitutes one with nozzle wing mechanism 2, and the single shaft (X-axis) that constitutes along with nozzle wing mechanism 2 moves on X-direction mobile.
As shown in Figure 9, to be configured to its rotating shaft coaxial with the roller axle 32 of the roller 3 that is supported body (not shown) supporting for above-mentioned second swing pinion 12.Second swing pinion 12 can be by being that center rotation makes roller 3 rotations with its rotating shaft.
As shown in Figure 9, above-mentioned first swing pinion 11 constitutes and tooth bar 10 and 12 interlocks of second swing pinion, and the position is fixed by not shown member.That is, first swing pinion 11 and tooth bar 10 interlocks and along with the single shaft of tooth bar 10 moves and rotates are rotated in one direction but only form.Specifically, as described later, first swing pinion 11 only rotates when ejection face moves from roller 3 in nozzle wing mechanism 2, and rotation is passed to above-mentioned second swing pinion 12.On the other hand, when roller 3 moved, first swing pinion 11 did not rotate after nozzle wing mechanism 2 scrapes ejection face, and therefore above-mentioned second swing pinion 12 does not rotate yet.Like this, the structure of present embodiment is defined as a direction by the direction of rotation with roller 3, and the rotation control of roller 3 is simplified.In addition, with the cleaning scraper blade 4 of roller 3 butts when removing attached to roller 3 lip-deep inks, needn't consider being involved in of cleaning scraper blade 4 that the opposite spin owing to roller 3 causes.Therefore, can simplify the installing mechanism of cleaning scraper blade 4.And, needn't worry that on the surface of the roller of wiping away by cleaning scraper blade 43 ink can spread owing to the opposite spin of roller 3.
In addition, as shown in Figure 9, above-mentioned tooth bar 10 is arranged on the face that the scrapes side on the table back of the body two sides on the wing 21.Therefore, after nozzle wing mechanism 2 scrapes ejection face, make wing 21 with than surperficial butt through more close ink gun 50 sides of center line C of roller axle 32 after, pass center line C, thereby wing 21 is moved to across a center line C side opposite with ink gun 50 sides (cleaning scraper blade 4 sides).
Below use Fig. 9 and Figure 10 that the driving controlling organization of above-mentioned motor 8 is described.
The wing 21 of Figure 10 (a) expression nozzle wing mechanism 2 is behind the ejection face of scraping, with the ratio of roller 3 state through the surperficial butt of more close ink gun 50 sides of center line C of roller axle 32.Shown in Figure 10 (a), when wing 21 is about to surperficial butt with roller 3 or during the beginning butt, motor 8 is controlled to the single shaft translational speed that reduces wing 21.Below 50% of single shaft translational speed of wing 21 when the single shaft translational speed of wing 21 is controlled to be wing 21 and scrapes ejection face when specifically, motor 8 is about to surperficial butt with roller 3 with wing 21 or when beginning and roller 3 butts.
Figure 10 (b) expression wing 21 moves to the state than more close cleaning scraper blade 4 sides of center line C.Wing 21 move to from state shown in Figure 10 (a) state shown in Figure 10 (b) during, roller 3 is rotation not.During this period, shown in Figure 10 (a), wing 21 will be removed (P1 among Figure 10 (a)) attached to the ink transfer on the above-mentioned back side 21a to roller 3.
Shown in Figure 10 (b), wing 21 moves to than the more close cleaning scraper blade of center line C 4 rear flank, follows above-mentioned motor 8 and nozzle wing mechanism 2 can be driven and be controlled to once more to than the more close ink gun 50 side shifting wings 21 of center line C.By above-mentioned driving, the above-mentioned surperficial 21b of wing 21 be connected to roller 3 on the surface of a center line C side opposite with ink gun 50 sides, be transferred on this surface attached to the ink on the surperficial 21b and remove (P2 among Figure 10 (c)).In the moving of above-mentioned wing 21, first swing pinion 11 and tooth bar 10 interlocks along with the single shaft of tooth bar 10 moves and rotates, and passes to above-mentioned second swing pinion 12 with rotation.Therefore, roller 3 rotates to the direction shown in Figure 10 (c).In addition, identical with above-mentioned situation, above-mentioned motor 8 is controlled to the single shaft translational speed that reduces wing 21 when wing 21 is about to surperficial butt with roller 3 or during the beginning butt.Below 50% of single shaft translational speed of wing 21 when the single shaft translational speed of wing 21 is controlled to be wing 21 and scrapes ejection face when specifically, motor 8 is about to surperficial butt with roller 3 with wing 21 or when beginning and roller 3 butts.
For avoiding wing 21 to produce damage with wing 21 butts of nozzle wing mechanism 2 time, the roller 3 in the present embodiment constitutes the surface roughness small construction as mentioned above.Therefore, though can avoid wing 21 to produce damage, the ink of roller 3 is removed efficient, and may to remove efficient than in the past spongy roller and the ink that forms reeded roller poor.But, as mentioned above, reduce the translational speed of wing 21 by with roller 3 butts the time, can increase and contact distance and butt time between wing 21 and roller 3 surfaces, thereby can guarantee fully that the ink of roller 3 removes efficient.
Figure 11 represents that wing 21 moves to the state than more close ink gun 50 sides of center line C.As shown in figure 11, removed by back side 21a and surperficial 21b at ink from wing 21, wing 21 is come roller 3 and ink gun 50 between the time, above-mentioned motor 8 drives control, to make nozzle wing mechanism 2 reciprocating on X-axis shown in arrow among the figure.At this moment, each nozzle wing mechanism 2 is when a direction (direction shown in Figure 10 (c)) is mobile, and first swing pinion 11 can drive 12 rotations of second swing pinion, thereby makes roller 3 rotate (roller matting) to a direction.As shown in Figure 8, in roller 3 beginning during to a direction rotation and/or during a direction rotation, cleaning fluid drips on the surface of direction roller 3 on the roller axle of roller 3 in cleaning solution supplying unit 5.In view of the above, can remove the ink that has reduced viscosity because of above-mentioned cleaning fluid from the surface of roller 3 with the cleaning scraper blade 4 of roller 3 butts.
Figure 12 represents the relation between the action of cleaning solution supplying unit 5 in the driving control of above-mentioned motor 8 and the roller matting.Figure 12 represents the state from Figure 10 (a) to Figure 10 (c), and motor 8 will drive direction (direction of rotation) upset of control under the state of the state of Figure 10 (a) and Figure 10 (c).In addition, become the state of Figure 11 after, as shown in figure 12, motor 8 drive repeatedly at short notice controlling party to upset.Carry out repeatedly initial stage in above-mentioned upset, cleaning solution supplying unit 5 is to the surface of roller 3 cleaning fluid that drips.Upset repeatedly during, nozzle wing mechanism 2 moves back and forth on X-axis, and roller 3 revolves at least and turns around.
At this, the rotation control of the roller 3 that undertaken by motor 8 is described.Correlation between the cleaning effect on the lyophily (scolding fluidity) on following table 1 expression roller 3 surfaces, the linear velocity of roller 3 and cleaning scraper blade 4 pair of rollers 3 surfaces.
Table 1:
In the table 1,, realized that the Ra on roller 3 surfaces is 2.0, and contact angle is 19 ° by make the surface of roller 3 with SUS304.In addition, by being formed from aluminium the surface of roller 3, realized that the Ra on roller 3 surfaces is 1.5, and contact angle is 25 °.By being formed from aluminium the surface of roller 3, realized that the Ra on roller 3 surfaces is 0.8, and contact angle is 33 °.By make the surface of roller 3 with SUS304, realized that the Ra on roller 3 surfaces is 0.8, and contact angle is 48 °.At the roller 3 (diameter 20mm) of each contact angle, make its linear velocity rotation with 24mm/ second and 5mm/ second, check the cleaning effect on cleaning scraper blade 4 (Fig. 1) pair of rollers 3 surfaces under each condition.At this moment, employed cleaning scraper blade 4 usefulness Da Jin system FFKM is made, and contact angle is 50 °.In addition, cleaning scraper blade 4 relative rollers 3 on the direction of rotation of roller 3 with the width butt about 0.5mm.Cleaning effect by in Visual Confirmation and the senile experiment do not spray and the generation frequency of ink drippage gives the evaluation of Three Estate.In addition, combine the easness (degree that liquid moves) of checking roller 3 lip-deep inks to shift by cleaning effect to cleaning scraper blade 4 with cleaning scraper blade 4.
Can know from above-mentioned check, make the fast more rotation of roller 3, the also cleaning effect that can obtain wishing even the contact angle on roller 3 surfaces is more little.In other words, above-mentioned check is represented, can set the rotation (linear velocity of roller 3) of roller 3 in the present embodiment according to the contact angle on roller 3 surfaces.
That is, by considering the material on roller 3 surfaces,, also can remove roller 3 lip-deep inks by cleaning scraper blade 4 even when the rotary speed of roller 3 reaches the quick speed of 24mm/ second.In view of the above, can shorten the time that scrapes action (upkeep operation) that requires in the gap that the ejection of colour filter manufacturing streamline is moved, to carry out and make contributions, and can realize the lifting of the cost performance of colour filter with few time.
As mentioned above, the cleaning mechanism 1 that the liquid material discharge device 40 in the present embodiment is provided with comprises: wing 21, and this wing 21 and above-mentioned ejection face butt are used to remove the ink attached on the ejection face; Roller 3, this roller 3 and above-mentioned wing 21 butts are used to remove the fluent material of removing from above-mentioned ejection face on the wing 21; And motor 8, this motor 8 is used for above-mentioned wing 21 is moved to position with above-mentioned roller 3 butts from the position with above-mentioned ejection face butt, above-mentioned roller 3 with above-mentioned wing 21 butts the time, wing 21 even butts relatively.Therefore, with use roller to remove to compare, can improve the efficient of removing of removing fluent material from ejection face attached to the fluent material on the ejection face.That is, as mentioned above, when making the structure of roller and ejection face butt, can remove fluent material from ejection face fully hardly, we can say the poor reliability of cleaning.On the contrary, the cleaning mechanism 1 that the liquid material discharge device 40 in the present embodiment is provided with uses wing 21, therefore can not produce the problems referred to above, and can spray the cleaning of face with high reliability.
In addition, the cleaning mechanism 1 that the liquid material discharge device 40 in the present embodiment is provided with comprises above-mentioned roller 3, and this roller 3 and above-mentioned wing 21 butts are used for removing ink from wing 21.Therefore, on wing 21, can not accumulate the ink more than the ormal weight, even thereby wing 21 used for a long time repeatedly, also can remove ink from ejection face with high reliability.
And, above-mentioned roller 3 with above-mentioned wing 21 butts the time, wing 21 even butts relatively.If make roller butt structure or that have the structure of protuberance member and groove of porous materials such as wing and sponge according to existing structure, then may cause damage to wing owing to the concaveconvex shape of this structure.On the contrary, roller 3 relative wing 21 even butts promptly, do not form and can cause the concaveconvex shape of damage to wing 21, and on level and smooth surface with wing 21 butts.Therefore, can not cause damage, can remove ink from wing 21, and can keep stable discharge performance wing 21.In addition, " smoothly " was though both comprised level and smooth situation also comprises it not being the situation that fully smoothly can not damage level and smooth (just substantial level and smooth) of wing 21 degree fully.
In addition,,, therefore compare, remove the ink on the roller 3 easily with the roller that constitutes by sponge and brush in the past because roller 3 has the structure of absorption attached to the fluent material on the wing unlike sponge and brush according to said structure.Therefore, compare the lifting of realizability price ratio with existing structure.
Therefore, can provide a kind of liquid material discharge device of realizing the high reliability of stable discharge performance.
In addition, the cleaning mechanism 1 that liquid material discharge device 40 in the present embodiment is provided with comprises removes mechanism, and this removes mechanism can remove the ink of removing from above-mentioned wing 21 from above-mentioned roller 3.Specifically, as removing mechanism, comprise cleaning scraper blade 4 with roller 3 butts.
According to said structure, owing to can remove fluent material from above-mentioned roller 3, even therefore carry out cleaning action for a long time, also needn't worry can be once more attached on the wing 21 attached to the fluent material on the above-mentioned roller 3, and wing 21 can be kept the state that can remove fluent material from ejection face well.
In addition, as the above-mentioned mechanism of removing, have to the drip cleaning solution supplying unit 5 of cleaning fluid of roller 3, above-mentioned cleaning fluid contains the composition that can remove attached to the ink on the roller 3, therefore, can remove attached to the ink on the roller 3 by the cleaning fluid that drips from cleaning solution supplying unit 5.And, in the present embodiment, can absorb the absorber that the wing 4 that is cleaned shifts the ink of removing owing to have, therefore shift and remove attached to the wing 4 that can be cleaned of the fluent material on the roller 3, and, shift the ink of removing by be cleaned wing 4 of absorbent body, the wing 4 that can prevent to be cleaned shifts the ink droplet of removing and gets back on the roller 3.
In addition, above-mentioned cleaning scraper blade 4 is compared wider width on the bearing of trend of roller axle 32 with above-mentioned wing 21, therefore can be on roller 3 surfaces residual ink, can remove ink well from roller 3 surfaces.
In addition, the cleaning fluid because above-mentioned cleaning solution supplying unit 5 drips on the end positions of the above-mentioned width on the above-mentioned cleaning scraper blade 4, therefore become the state that the wing 4 that can't be cleaned is removed even ink is diffused into than the position of the above-mentioned width more lateral of cleaning scraper blade 4 on roller 3, the cleaning fluid owing on position, drip than the above-mentioned width more lateral of cleaning scraper blade 4, therefore can be on roller 3 residual ink, the cleaning of high reliability can be provided.
In addition, the cleaning mechanism 1 that liquid material discharge device 40 in the present embodiment is provided with comprises tooth bar 10 and swing pinion mechanism (first swing pinion 11 and second swing pinion 12), above-mentioned tooth bar 10 forms as one with wing 21, above-mentioned swing pinion mechanism and roller 3 link and with tooth bar 10 interlocks, therefore along with wing 21 is driven by motor 8, tooth bar 10 also one moves.Therefore, by being connected with roller 3, can make the rotation interlock of the mobile and roller 3 of wing 21 with the swing pinion mechanism of tooth bar 10 interlocks.In view of the above,, therefore can reduce component count, and compare, because therefore the power consumption that does not need the roller rotation to drive can suppress power consumption with the rotary drive unit that roller is set separately owing to motor 8 can be also used as the rotary drive unit of roller.
In addition, according to present embodiment, contact angle with faces wing 21 butts on the roller 3 is littler than the contact angle with faces roller 3 butts on the wing 21,, on the roller 3 has more lyophily with faces wing 21 butts than the face with roller 3 butts on the wing 21 that is.Therefore, good to the liquid metastatic of roller 3 when removing attached to the fluent material on the wing 3 from wing 21 by roller 3, and can remove expeditiously.
In addition, in the present embodiment, the liquid material discharge device of the structure of red to spraying (R), blue (B), green (G) trichromatic ink is illustrated, but the present invention is not limited to this, both can be the liquid material discharge device of the monochromatic ink of ejection, also can be the liquid material discharge device of ejection four looks above ink.
In addition, in the present embodiment, carry out the roller matting during every and roller 3 butts one time at surperficial 21b and back side 21a.But the present invention is not limited to this, and the diameter by adjusting roller 3 and the gear ratio of first swing pinion 11 and second swing pinion 12 also can be the structures of carrying out matting at surperficial 21b and back side 21a respectively with roller 3 butts repeatedly the time.
In addition, in the present embodiment, as the roller of roller 3 use cylindrical structurals, but the present invention is not limited to this, also can replace with endless-belt.Endless-belt can be made of resin, and can use with the face of wing 21 butts on carry out the lyophily processing endless-belt.
In addition, we can say that also liquid material discharge device of the present invention is characterised in that following structure.
Promptly, we can say that also liquid material discharge device of the present invention is characterised in that, in the liquid material discharge device of ink jet type, as being used to remove attached to the ejection face of the fluent material on the ejection face cleaning unit with wing, have with ejection face be the roller of non-porous material with the object of wing butt.
In addition, comparatively it is desirable in said structure, as being used to remove attached to the ejection face of the fluent material on the ejection face cleaning unit with wing, with the roller that scrapes the wing butt be metal, be resinous with the roller of wing butt perhaps with ejection face.
And, comparatively it is desirable in said structure, the surface roughness of roller is below 0.8.
And, comparatively it is desirable to make ejection face littler to the lyophily of fluent material to the lyophily of fluent material than roller with wing.
And, also can be the non-porous material roller after the surperficial lyophilyization of use in said structure.
And, comparatively it is desirable in said structure, regularly the pair of rollers cleaning fluid that drips.
In addition, comparatively it is desirable in said structure, to have the partition of convex on the roller.
As mentioned above, cleaning device of the present invention is a kind of cleaning device of removing attached to the fluent material on the ejection face of liquid material discharge device, it is characterized in that comprising: ejection face wing, this ejection face is used to remove the fluent material attached on the ejection face with wing and above-mentioned ejection face butt; Cleaning unit, this cleaning unit and above-mentioned ejection face wing butt are used to the ejection face of removing with the fluent material of removing from above-mentioned ejection face on the wing; And driver element, this driver element is used for above-mentioned ejection face is moved to position with above-mentioned cleaning unit butt with wing from the position with above-mentioned ejection face butt, above-mentioned cleaning unit is with above-mentioned ejection face during with the wing butt, and the face that sprays relatively is with the even butt of wing.In addition, as mentioned above, the feature of liquid material discharge device of the present invention is to comprise the cleaning device of said structure and constitute the ink gun that can spray fluent material from ejection face.
According to said structure, can carry out the cleaning of the ejection face of liquid material discharge device (nozzle plate) to high reliability, and can eliminate cleaning the damage that ejection face causes, realize stable discharge performance.
The specific embodiment of narrating in the detailed description of the invention item or embodiment are just for clear and definite technology contents of the present invention, should not be interpreted as to narrow sense only being defined in above-mentioned object lesson, in the claim scope of spirit of the present invention and following narration, can carry out various variations and implement the present invention.
Industrial utilizability
Cleaning device of the present invention can carry out to high reliability ejection face clear of liquid material discharge device Clean, and can eliminate cleaning to the damage that ejection face causes, realize stable discharge performance.
Therefore, except being applied to the liquid material discharge devices such as colour filter manufacturing installation, can also Be applied to remove all cleaning devices of fluent material.
Claims (16)
1. cleaning device, it is a kind of cleaning device of removing attached to the fluent material on the ejection face of liquid material discharge device, it is characterized in that, comprising:
Ejection face wing, this ejection face is used to remove the fluent material attached on the ejection face with wing and described ejection face butt;
Cleaning unit, this cleaning unit and described ejection face wing butt are used to the ejection face of removing with the fluent material of removing from described ejection face on the wing; And
Driver element, this driver element are used for described ejection face is moved to position with described cleaning unit butt with wing from the position with described ejection face butt,
Described cleaning unit with described ejection face with the wing butt during, with ejection face with the even butt of wing.
2. cleaning device as claimed in claim 1 is characterized in that described cleaning unit is a roller.
3. cleaning device as claimed in claim 1 or 2 is characterized in that, comprises and removes mechanism, and this is removed mechanism and removes the fluent material of removing with wing from described ejection face on the described cleaning unit.
4. cleaning device as claimed in claim 3 is characterized in that, the described mechanism of removing has wing with described cleaning unit butt.
5. cleaning device as claimed in claim 3 is characterized in that, the described mechanism of removing has:
Cleaning unit wing, this cleaning unit be with wing and described cleaning unit butt, shifts the fluent material of removing with wing from described ejection face on the described cleaning unit of removal; And
Absorber, this absorbent body is shifted the fluent material of removing by described cleaning unit with wing.
6. cleaning device as claimed in claim 5 is characterized in that,
Described cleaning unit is a roller,
It is wide that described cleaning unit is compared on the bearing of trend of the rotating shaft of described roller width with wing and described ejection face with wing.
7. as each described cleaning device in the claim 3 to 6, it is characterized in that the described mechanism of removing has the drip unit that drips of liquid of described cleaning unit.
8. cleaning device as claimed in claim 6 is characterized in that, the described mechanism of removing has on the end positions of described cleaning unit with the described width of wing the drip unit that drips of liquid of described cleaning unit.
9. as claim 7 or 8 described cleaning devices, it is characterized in that the described liquid that is dripped by the described unit that drips contains the composition of removing attached to the fluent material on the described cleaning unit.
10. cleaning device as claimed in claim 2 is characterized in that, comprising:
Tooth bar, this tooth bar and described ejection face constitute one with wing; And
Swing pinion mechanism, this swing pinion mechanism and described roller link, and with the tooth bar interlock.
11. as each described cleaning device in the claim 1 to 10, it is characterized in that, described cleaning unit with described ejection face be 0.1～2.0 with the surface roughness Ra of the face of wing butt.
12., it is characterized in that the contact angle with face described ejection face usefulness wing butt described cleaning unit is littler with the contact angle with face described cleaning unit butt wing than described ejection face as each described cleaning device in the claim 1 to 11.
13. as each described cleaning device in the claim 1 to 12, it is characterized in that, described cleaning unit be carried out the lyophily processing with described ejection face with the face of wing butt.
14., it is characterized in that described cleaning unit is made of metal as each described cleaning device in the claim 1 to 13.
15., it is characterized in that described cleaning unit is by making with the resin that the face of wing butt has been carried out the lyophily processing with described ejection face as each described cleaning device in the claim 1 to 13.
16. a liquid material discharge device is characterized in that, comprising:
Cleaning device, this cleaning device are each described cleaning devices in the claim 1 to 15; And
Ink gun, this ink gun constitute can be from ejection face ejection fluent material.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP120201/2007 | 2007-04-27 | ||
| JP2007120201A JP4257367B2 (en) | 2007-04-27 | 2007-04-27 | Cleaning device for liquid material discharge device |
| PCT/JP2008/058090 WO2008139895A1 (en) | 2007-04-27 | 2008-04-25 | Cleaning device for liquid material discharge device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101668636A true CN101668636A (en) | 2010-03-10 |
| CN101668636B CN101668636B (en) | 2011-11-16 |
Family
ID=40002111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008800135603A Expired - Fee Related CN101668636B (en) | 2007-04-27 | 2008-04-25 | Liquid material discharge device and its cleaning device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4257367B2 (en) |
| CN (1) | CN101668636B (en) |
| WO (1) | WO2008139895A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103129149A (en) * | 2011-11-24 | 2013-06-05 | 株式会社御牧工程 | Maintenance device and liquid drop spray device |
| CN106739512A (en) * | 2016-12-05 | 2017-05-31 | 郑州新世纪数码科技股份有限公司 | The horizontal ink-scraping device of anti-waste ink colour contamination |
| CN111587184A (en) * | 2018-01-08 | 2020-08-25 | 惠普发展公司，有限责任合伙企业 | Removing material |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2889141B1 (en) * | 2012-08-17 | 2018-02-21 | Seiko Epson Corporation | Liquid jetting device |
| JP7451986B2 (en) | 2019-12-16 | 2024-03-19 | ブラザー工業株式会社 | liquid discharge device |
| CN114247705B (en) * | 2021-11-30 | 2022-12-23 | 合肥河钢新材料科技有限公司 | Color-changing pre-coated color plate and production equipment thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04369548A (en) * | 1991-06-19 | 1992-12-22 | Canon Inc | Ink jet recorder |
| JP3135831B2 (en) * | 1995-12-01 | 2001-02-19 | シャープ株式会社 | Head cleaning device for inkjet printer |
| JPH11254707A (en) * | 1998-03-13 | 1999-09-21 | Canon Inc | Ink-jet recording apparatus and cleaning unit |
| JP2004243663A (en) * | 2003-02-14 | 2004-09-02 | Sii Printek Inc | Wiping device and its operation method |
| JP4379017B2 (en) * | 2003-07-01 | 2009-12-09 | コニカミノルタホールディングス株式会社 | Inkjet printer head maintenance device |
| JP2005028766A (en) * | 2003-07-04 | 2005-02-03 | Canon Finetech Inc | Inkjet recording device |
| JP4570865B2 (en) * | 2003-12-15 | 2010-10-27 | 株式会社リコー | Head cleaning device and image forming apparatus |
| KR101184069B1 (en) * | 2006-03-29 | 2012-09-19 | 엘지디스플레이 주식회사 | Apparatus and method for coating polyimide layer on the glass |
-
2007
- 2007-04-27 JP JP2007120201A patent/JP4257367B2/en active Active
-
2008
- 2008-04-25 CN CN2008800135603A patent/CN101668636B/en not_active Expired - Fee Related
- 2008-04-25 WO PCT/JP2008/058090 patent/WO2008139895A1/en active Application Filing
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103129149A (en) * | 2011-11-24 | 2013-06-05 | 株式会社御牧工程 | Maintenance device and liquid drop spray device |
| CN103129149B (en) * | 2011-11-24 | 2015-04-22 | 株式会社御牧工程 | Maintenance device and liquid drop spray device |
| CN106739512A (en) * | 2016-12-05 | 2017-05-31 | 郑州新世纪数码科技股份有限公司 | The horizontal ink-scraping device of anti-waste ink colour contamination |
| CN111587184A (en) * | 2018-01-08 | 2020-08-25 | 惠普发展公司，有限责任合伙企业 | Removing material |
| US11123977B2 (en) | 2018-01-08 | 2021-09-21 | Hewlett-Packard Development Company, L.P. | Displacing a substance |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008139895A1 (en) | 2008-11-20 |
| CN101668636B (en) | 2011-11-16 |
| JP4257367B2 (en) | 2009-04-22 |
| JP2008273065A (en) | 2008-11-13 |
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