CN101022893B - Ink jet printer discharge amount control method, ink droplet spread check method, and orientation film formation method - Google Patents
Ink jet printer discharge amount control method, ink droplet spread check method, and orientation film formation method Download PDFInfo
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Abstract
A discharge amount control method for an ink jet printer 1 includes: a film formation step for discharging ink onto an ink non-absorbing material-to-be-coated 2 from a plurality of nozzles 4 of a print head 3 so as to form a film B on the material-to-be-coated; a film thickness measurement step for measuring the film thickness of the film B formed on the material-to-be-coated 2 in the film formations step in connection with the ink discharge position of each of the nozzles 4; and a discharge amount correction step for increasing/decreasing the ink discharge amount from each of the nozzles 4 according to the difference between the film thickness at the ink discharge position of each of the nozzles 4 measured in the film thickness measurement step and a target film thickness Ba.
Description
Technical field
The present invention relates to a kind of for keep from a plurality of nozzles on the printhead of ink-jet printer in the conforming technology that is coated with the rate of discharge of China ink between each nozzle on the application, a kind of for checking technology that China ink scatters and a kind of be used to using this China ink to form the technology of oriented film in glass substrate.
Background technology
In recent years, except utilizing ink-jet printer the substrate that is made of paper, fiber, plastics, pottery etc. prints, when being used for transparent glass substrate such as the equipment of liquid crystal display and forming oriented film, perhaps when the coating of the transparent glass substrate in organic EL display apparatus colour filter, also to use ink-jet printer.Particularly, with regard to liquid crystal display, be discharged from and be coated on the glass substrate such as the oriented film material of transparent PI China ink (transparent polyimides China ink) or transparent UV China ink and (for example see patent documentation 1), with regard to organic EL display apparatus, be discharged from and be coated on the glass substrate such as the coating material of transparent UV China ink.
The China ink of discharging at a plurality of nozzles of wishing aspect the discharge from the printhead of ink-jet printer in said case, is consistent between each nozzle.For example, with regard to the printed material that color wherein is staple, consider how produce from each nozzle have the color of consistent density after, China ink is discharged from has being coated with on the application of characteristic (ink absorption properties) that absorb China ink.Therefore, if fully consistent from the little ink droplet (ink droplet) of each nozzle discharge, can be readily implemented in so the uniformity that is coated with the color density on the application with ink absorption properties.
Yet, use common ink-jet printer to be difficult to be coated with what have the characteristic (not absorbing black characteristic) that do not absorb China ink that application-for example above-mentioned glass substrate-formation has the film of consistent thickness.Therefore, not only be difficult to especially to have the described film that application formation has the consistent thickness that is thinner than 1 μ m that is coated with that does not absorb black characteristic, even when forming the film with 1 μ m or above consistent thickness, also need accurately to improve the discharging performance from the little ink droplet of each nozzle.
In order to form the film with consistent film thickness being coated with application, attempted by the abundant consistent discharging performance that voltage (producing the operating voltage of pressure oscillation by opening of each nozzle in pressure chamber) finely tunes to produce the little ink droplet of discharging from each nozzle that applies to each nozzle on the printhead of ink-jet printer.According to following patent documentation 2, it has disclosed proofreaies and correct from the voltage (operating voltage) that applies of the velocity of discharge of the little ink droplet of nozzle being used for adjusting.
In addition, when use ink-jet printer with China ink discharge have China ink not absorption characteristic such as above-mentioned glass substrate be coated with on the application time, if the distribution of the little ink droplet of insufficient control after collision (impact), to produce so the problem of failing to merge such as each little ink droplet that is collided, and cause thus to be difficult to form and to have the high-quality film of consistent film thickness being coated with application.Therefore, by China ink is discharged have China ink not being coated with on the application of absorption characteristic and actual form film during, in advance the distribution of little ink droplet accurately to be controlled after being coated with application be very important in that collision is described.
In view of described situation, usual way for the distribution of controlling little ink droplet after collision is coated with application is, by pure water or ink droplet are being coated with on the application surface, then use existing contact angle instrument to measure by the surface of the peripheral 13a of little ink droplet 13 and be coated with the contact angle α that the surperficial 12a of application 12 forms, as shown in figure 19.Wherein, contact angle α is less and sharp-pointed, and it is just better to be coated with the hydrophily that the application surface has, and little ink droplet scatters also widelyr, therefore shows to have in formation to have advantage aspect the film of consistent thickness.Yet the distribution of little ink droplet not merely changes according to the characteristic of China ink or the surface characteristic that is coated with application, but also will be subject to the impact such as the other factors of the size of the little ink droplet that is discharged from or rate of discharge.Consider described situation, be not difficult to reach a conclusion, use usual way can not control fully the distribution of little ink droplet.
In addition, also the another kind of known ink-jet printer is used, and namely uses ink-jet printer to form directed China ink on the above-mentioned glass substrate by oriented film material is dropped in.Yet, because ink ejecting method can occur being directed the problem that membrane material blocks such as nozzle defect, nozzle orientation and nozzle, cause thus the amount that is difficult to needs that oriented film material is dropped on the position of needs fully.
In order to solve described problem, the droplet state is checked, and if not then add and reclaim oriented film material, if improper then it is abandoned.As the method that be used for to check the droplet state, (in patent documentation 3) proposes by so that its substrate that is formed with oriented film is measured film thickness by the inteferometer coating thickness measurement device; If film thickness is inadequate, then use inkjet nozzle again to drip oriented film, in order to thicken, then use the inteferometer coating thickness measurement device again to measure film thickness.
[patent documentation 1] JP No.2001-42330A
[patent documentation 2] JP No.2003-191467A
[patent documentation 3] JP No.H9-166783A
Summary of the invention
In recent years, the increase of glass substrate size has for example produced application width and the demand that applies length that increases ink-jet printer and the demand that reduces the coating time.In this case, even apply by what regulate each nozzle on the printhead that voltage-as mentioned above, this should be able to obtain consistent film thickness-adjusting itself and also have variety of issue.
In order to increase the application width of China ink, need obviously to increase application width and the nozzle quantity of printhead itself.This causes very expensive printhead inevitably, and the system of control printhead is also expensive with complicated.In addition, the information content of control system will sharply increase, and produce thus the problem that descends unfavourably such as the coating speed from the China ink of each nozzle.
And, even by being adjusted in respectively the voltage that applies of each nozzle in the existing ink-jet printer, to realize the consistent coating of little ink droplet, also can have the restriction of executing alive precision, and be difficult to realize sufficient uniformity.For example, though uniformity (changeability) that need to the oriented film that employed glass substrate is formed in above-mentioned liquid crystal display for about 2%, the intrinsic discharge precision of presently used ink-jet printer still is about 5%.Therefore, in order to be adjusted in the voltage that applies of each nozzle in this ink-jet printer, to realize that the film uniformity as about 2%, need to improve and execute alive precision (accuracy).Yet this is impossible realize that even realized, control system will be more complicated also, and information content is huge actually, causes thus the coating speed of China ink further to reduce.
The first technical purpose of the present invention is, accurately consistent in the rate of discharge that is coated with the China ink on the application discharged in realization from each nozzle, and can not be subject to the impact of executing alive degree of regulation of each nozzle, propose thus a kind of ink-jet printer, it does not have because of the complexity of the control system of printhead and the great number cost that huge information content causes.
For the above-mentioned problem that can not control fully the distribution of little ink droplet, the present inventor has found a kind of method, the ink-jet printer that namely utilizes reality just being used, allow the little ink droplet collision of the China ink that reality just is being used to remain target-coated targets of being applied by reality, then measure the diameter of little ink droplet.According to this method, consider characteristic such as China ink, be coated with all factors of the velocity of discharge of the size of the surface characteristic of application, the little ink droplet that is discharged from and little ink droplet, can control in the distribution that is coated with on the application little ink droplet, and can realize having the high-quality film of consistent thickness.
Yet, even adopt this method, if China ink be transparent or semitransparent (after this, " transparent or semitransparent " also can be referred to as " transparent type "), so owing to being difficult to or can not visually identifying little ink droplet, so also be difficult to maybe can not measure the diameter of this little ink droplet.And, also be transparent type if be coated with application, so this little ink droplet will be difficult to identification more, further hinder thus the measurement to the diameter of little ink droplet.
When on the glass substrate that PI China ink or UV China ink such as transparent type are discharged from the transparent type in liquid crystal display, perhaps when the UV of transparent type China ink was discharged from the glass substrate of the transparent type in above-mentioned organic EL display apparatus, this problem was obvious especially.In addition, when the China ink of above-mentioned China ink or other transparent type is discharged from the substrate of the resin substrates of transparent type or the transparent type that is used for producing the semiconductor devices, also same problem can appear.
In view of this, the second purpose of the present invention is, proposes a kind of method, and the little ink droplet that is used for checking fully transparent type is in the distribution on the application of being coated with of transparent type, and forms the high-quality film with consistent thickness being coated with application.
In addition, when checking or measuring above-mentioned oriented film, because the quality to oriented film is judged after oriented film is formed on the substrate, so if the oriented film defectiveness will have to whole substrate is all abandoned so, cause thus the waste of material.In addition, carry out timing after being formed on the substrate at oriented film, the thickness of oriented film also forms in the layer, and this is difficult to keep steady quality.And, owing to do not judge the situation of inkjet nozzle, so may need to proofread and correct frequently.
The 3rd purpose of the present invention is, proposes a kind of orientation film formation method, judges before oriented film is formed on the substrate wherein whether inkjet nozzle exists unusually, can proofread and correct in advance nozzle thus.
The rate of discharge control method about ink-jet printer of the present invention that be used for to solve the first technical problem comprises: film forms step, be used for by will from the China ink of a plurality of nozzles of printhead discharge have China ink not the application that is coated with of absorption characteristic form film at the described application that is coated with; The film thickness measuring process is used for the black drain position corresponding to each nozzle, measures be formed on the described thickness that is coated with the film on the application in described film formation step; The rate of discharge aligning step, be used for by based on increasing or reduce rate of discharge at aimed film thickness with in the difference between the film thickness that described film thickness measuring process records of the black drain position of each nozzle, thereby the rate of discharge from the China ink of each nozzle is proofreaied and correct.
According to described method, have the black not application (for example glass substrate) that is coated with of absorption characteristic and effectively utilized, and China ink is being used to form on the coated film of film by actual the discharge.In addition, film thickness to the film corresponding with the black drain position of each nozzle is measured, then, black drain position according to each nozzle, to in the resulting result who shows actual membrane thickness with show that the difference between the desired value of aimed film thickness judges, and by the rate of discharge that increases or reduce China ink the rate of discharge (namely being discharged from the rate of discharge that is coated with the China ink on the application from each nozzle) from the China ink of each nozzle is proofreaied and correct.Therefore, checking in advance from the variation of the rate of discharge of the China ink of each nozzle and proofreading and correct rate of discharge from each nozzle, thereby eliminating after this variation, can carry out actual film by printhead and form etc.Avoid thus the control system of printhead and data volume are produced harmful effect and avoid shortening the obstruction of black coating time, and can keep from each nozzle be discharged from the rate of discharge that is coated with the China ink on the application unanimously.Therefore can satisfy the demand that increases in recent years application width and the China ink that is consistent simultaneously coating.With regard to regard to adopting after the rate of discharge of proofreading and correct from the China ink of each nozzle that described method is actual and applying, although the transparent glass substrate in liquid crystal display etc. forms oriented film or will be coated in such as the coating material of transparent UV China ink that transparent glass substrate is effective especially in the organic EL display apparatus, described method also can be used for printing at the substrate that is made of paper, fiber, plastics, pottery etc. in addition.
In this case, in the rate of discharge aligning step, preferably produce and store for proofreading and correct data from the rate of discharge of the China ink of each nozzle by increasing or reducing rate of discharge.
Therefore, according to the correction data of storing, by increasing or reduce to proofread and correct the rate of discharge from the China ink of each nozzle.During the actual China ink coating by printhead, can by reading described correction data from storage device (memory cell) and regulating each nozzle and come black rate of discharge is proofreaied and correct, therefore can improve processing speed and convenience thus.In addition, for example with regard to the printer that comprises a plurality of printheads with a plurality of nozzles that are set up, owing to be used for being stored as correction data from the corrected value of the rate of discharge of the China ink of each nozzle, even so after reapposing or rearrange described printhead, always still can discharge from each nozzle the China ink of accurate correction amount.And, even when the discharge characteristic of each nozzle along with the time when change, as long as regenerate and store correction data, just can be only easily discharge fully China ink based on the correction data of this renewal.
In addition, in the rate of discharge aligning step, be discharged from the distributed number that is coated with the little ink droplet on the application from each nozzle and preferably can change.
Therefore, owing to be discharged from the distributed number that is coated with the little ink droplet on the application to come by increasing or reducing rate of discharge the rate of discharge from the China ink of each nozzle to be proofreaied and correct by changing from each nozzle, so can obtain proofreading and correct easy and accurate advantage.
The rate of discharge control appliance about printer of the present invention that is used for solution the first technical problem comprises: be coated with application, it has not absorption characteristic of China ink, and is formed with in its surface by discharging the black film that forms from a plurality of nozzles of printhead; Film thickness measuring apparatus is used for the black drain position corresponding to each nozzle, to measuring at the film thickness that is coated with the film that application forms; The rate of discharge means for correcting, be used for poor based between aimed film thickness and the measured film thickness by described film thickness measuring apparatus at the black drain position of each nozzle, by increasing or less rate of discharge, proofread and correct the rate of discharge from the China ink of each nozzle.
According to this equipment, discharge by China ink forms described film at the application (for example glass substrate) that is coated with black not absorption characteristic, and comes the film thickness of the film corresponding with the black drain position of each nozzle is measured by the operation film thickness measuring apparatus.Then, discharge the rate correction device by operation, judge in the resulting result who shows actual membrane thickness and show poor between the desired value of aimed film thickness according to the black drain position of each nozzle, and come the rate of discharge (namely being discharged from the rate of discharge that is coated with the China ink on the application from each nozzle) from the China ink of each nozzle is proofreaied and correct by the rate of discharge that increases or reduce China ink.By carrying out this correction, can obtain the effect identical with the described effect of the corresponding situation of top combination.In addition, with utilizing described equipment also same as described above to the corresponding situation of the actual coating after proofreading and correct from the rate of discharge of the China ink of each nozzle.
In this case, the rate of discharge means for correcting preferably also comprises the storage device for the storage correction data in addition, and described correction data is used for proofreading and correct each black rate of discharge by increasing or reducing rate of discharge.
Even in said case, because according to the correction data of storing, by increasing or reduce to proofread and correct the rate of discharge from the China ink of each nozzle, so can obtain with top about the identical effect of the described effect of corresponding situation.
In addition, the preferably also adjacent setting on the nozzle arrangement direction of a plurality of printheads that has a plurality of nozzles.
Therefore, although the application width of China ink increases along with the increase of the size that is coated with the application glass substrate of liquid crystal display (for example be used for) in recent years, still can not have hell and high water ground and as one man China ink be discharged fully described at short notice and be coated with on the application.
That China ink scatters inspection method about the method for solving the second technical problem of the present invention, be used for when little ink droplet collision transparent or translucent have China ink not absorption characteristic be coated with on the application time check the China ink distribution of little ink droplet, described little ink droplet is to be discharged from the transparent or translucent China ink that is coated with on the application from black device for transferring, described method comprises: little ink droplet is repeatedly discharged be coated with on the application, thereby little ink droplet is overlapped; The image of the periphery of the little ink droplet group that forms based on the little ink droplet that is coated with application by collision checks being dispersed in the China ink that is coated with on the application.
Scatter inspection method according to this China ink, (described little ink droplet group is by repeatedly discharging little ink droplet by the periphery with little ink droplet group, thereby they are overlapped, thus the collision of little ink droplet is formed being coated with on the application) compare with the periphery (described little ink droplet forms by only once little ink droplet being discharged and collided be coated with on the application) of little ink droplet, the degree that protrudes from the surface that is coated with application becomes large, and from the amount of the light of described peripheral reflection or refraction more than the amount from the light of other parts (for example flat mid portion) reflection or refraction.Therefore, the periphery of little ink droplet group can visually or by the imaging device such as the CCD camera clearly be identified, and for example, can judge accurately that by diameter or the width of measuring little ink droplet group China ink scatters.Therefore, can form the high-quality film with consistent thickness being coated with application.
Particularly, owing to cleaned in the cleaning of the surface that is coated with application before China ink is discharged step, thus so that each surface quality that is coated with application change, so even invariable such as black device for transferring or the black discharge state of ink-jet printer, described black distribution will be different.Therefore, whether abundant in order to know the surface state that is coated with application, black device for transferring and black discharge condition, preferably as in the present invention the actual discharge of little ink droplet is being coated with on the application and is measuring China ink and scatter.Therefore, if after judge scattering fully, carry out the film forming process by discharging continuously China ink, can produce in a large number so the product that has being coated with the high-quality film that application forms.On the contrary, whether fully namely do not carry out the film forming process by discharging continuously China ink if judge as described above little ink droplet in the distribution that is coated with on the application, will produce a large amount of defectives so, cause thus the problem that obviously descends such as output.In view of described situation, according to the present invention, even when on the substrate of the China ink of transparent type being discharged in transparent type, still can accurately judge little ink droplet in the distribution that is coated with on the application, the problem that therefore can effectively avoid described output obviously to descend.
According to said method, be coated with on the application in that little ink droplet is repeatedly discharged, thereby little ink droplet overlapped during, preferably so discharge little ink droplet, namely only some is overlapping for each little ink droplet.
Therefore, when discharging little ink droplet subsequently after the little ink droplet collision when formerly is coated with application, the part of described little ink droplet subsequently will be collided the surface of described little ink droplet before, and another part then is coated with collision the surface of application.Therefore, when each whole little ink droplet overlapping, can produce the stroke of China ink, therefore so collision of China ink, thus whole subsequently little ink droplet is coated with the surperficial overlaid of the previous little ink droplet of application with collision, and the difficulty scattered of the inspection China ink of having avoided causing thus.
According to said method, be preferably in and be coated with the little ink droplet of application side collision part or be arranged to the picture device at its rear side, be used for absorbing the image of the periphery of little ink droplet group, and based on the image that absorbs China ink checked in the distribution that is coated with on the application.
Therefore, be image because the periphery of little ink droplet group is imaged the device picked-up, scatter diameter or width so this will help to measure China ink, for example, also can automatically measure.In addition, be transparent type owing to be coated with application, so imaging device can be positioned at the little ink droplet collision part of the either side that is coated with application or its rear side, therefore the problem of layout can not appear relating to.
According to foregoing invention, if be coated with application and be the glass substrate for liquid crystal display or organic EL display apparatus, and described China ink is for the oriented film material of liquid crystal display or is used for the coating material of organic EL display apparatus that the present invention will improve the quality of liquid crystal display or organic EL display apparatus so.Above-mentioned oriented film material can be the PI China ink (transparent polyimides China ink) of transparent type or the UV China ink of transparent type, and above-mentioned coating material can be the UV China ink of transparent type.
In addition, according to foregoing invention, if black device for transferring is ink-jet printer, can obtain above-mentioned effect so.
What be used for solution the second technical problem is that China ink scatters checkout facility about equipment of the present invention, it is so made up, thereby when the collision of little ink droplet has a China ink absorption characteristic transparent or translucent is not coated with application, China ink distribution to little ink droplet checks, described little ink droplet is to be discharged from the transparent or translucent China ink that is coated with on the application from black device for transferring, and thereby little ink droplet is repeatedly discharged and is being coated with on the application, thus little ink droplet is overlapped, and the image of the periphery of the little ink droplet group that forms based on the little ink droplet that is coated with application by collision checks in the distribution that is coated with on the application China ink.
Scatter checkout facility according to this China ink, by comprising the feature corresponding with said method and for above-mentioned reasons, can judge accurately that China ink scatters, and can form and have the high-quality film of consistent thickness being coated with application, and also can avoid output obviously to descend.
In this case, when using viscosity for example during as above-mentioned China ink, can obtain significantly above-mentioned various effects as the membrane material of 30dyn/cm to 40dyn/cm as 5cp to 16cp and surface tension.
Be used for solving comprising about orientation film formation method of the present invention of the 3rd technical problem: check step, be used for the droplet pattern according to the collision of the oriented film material that uses inkjet nozzle to be discharged from (for example viscosity is 30dyn/cm to 40dyn/cm as 5cp to 16cp and surface tension), to unusually checking in the inkjet nozzle; Film forms step, for by when when the droplet pattern that checks step is in the predetermined scope, so that ink-jet is relative with substrate, and passes through to use inkjet nozzle that oriented film material is discharged and collided on substrate, thereby forms oriented film.
Therefore, form step owing to before inkjet nozzle is checking to be judged as normally in the step, will not carry out oriented film, so can prevent that oriented film from unnecessarily forming at substrate.
In addition, in checking step, use inkjet nozzle that oriented film material is discharged and collided on the transparent body, and the data of the droplet pattern of the collision of being read from the lower surface of the transparent body by the image recognition camera and the data of in advance storage are compared, whether be in the predetermined scope in order to judge the droplet pattern.Therefore, owing in the discharge scope, do not have tangible object, thus avoided the pollution from working environment, and can check reliably.
And, in checking step, in advance droplet pattern and the data of storing are compared, when the droplet pattern is not in preposition, judge and show nozzle blockage, when the position deviation of droplet pattern during in preposition, judge and show the skew of droplet stroke, when the droplet pattern is greater than or less than pre-sizing, the rate of discharge of inkjet nozzle judged and is shown as be greater than or less than default rate of discharge.Therefore, can easily identify and repair defective oriented film material or inkjet nozzle.
Be used for to solve comprising about oriented film forming device of the present invention of the 3rd technical problem: the inspection area is used for checking the unusual of inkjet nozzle according to the droplet pattern of the collision of the oriented film material that is discharged from inkjet nozzle; Film forms the zone, is used for forming oriented film by discharge and collide oriented film material with inkjet nozzle; Mobile device, be used for when being in the predetermined scope according to described inspection droplet pattern, so that moving to film from the inspection area, inkjet nozzle forms the zone, perhaps so that the position of inspection area forms the position movement in zone to the position relative with inkjet nozzle with film.
According to this equipment, because the film that inkjet nozzle will can not move to for oriented film before inkjet nozzle being judged to be normally by inspection forms the zone, so can prevent from unnecessarily forming oriented film.
In addition, the inspection area comprises: the transparent body, its be positioned at inkjet nozzle below; The image recognition camera is used for reading the droplet pattern of collision below the described transparent body; Comparison means is used for the droplet pattern that is read by described image recognition camera and the normal pattern of storing are in advance compared; Whether evaluating apparatus, it is normal or unusual from the result of described comparison means to be used for evaluation.Thus, the data of the droplet pattern of the collision of being read from the lower surface of the described transparent body by described image recognition camera and the data of in advance storage are compared, whether be in the predetermined scope in order to judge described droplet pattern.Therefore, owing in the discharge scope, do not have tangible object, thus avoided the pollution from working environment, and can check reliably.
And, in the inspection area, in advance droplet pattern and the data of storing are compared, when the droplet pattern is not in preposition, judge and show nozzle blockage, when the position deviation of droplet pattern during in preposition, judge and show the skew of droplet stroke, when the droplet pattern is greater than or less than pre-sizing, the rate of discharge of inkjet nozzle judged and is shown as be greater than or less than default rate of discharge.Therefore, can easily identify and repair defective oriented film material or inkjet nozzle.
As mentioned above, according to be used for to solve the first technical problem about rate of discharge control method and the equipment for ink-jet printer of the present invention, China ink discharged have not being coated with on the application of absorption characteristic of China ink.Then the film thickness of the film corresponding with the black drain position of each nozzle is measured, afterwards according to the black drain position of each nozzle in the resulting result who shows actual membrane thickness with show that the difference between the desired value of aimed film thickness judges, and by the rate of discharge that increases or reduce China ink the rate of discharge from the China ink of each nozzle is proofreaied and correct.Avoid thus the control system of printhead and data volume are produced harmful effect and avoid shortening the obstruction of black coating time, and can keep from each nozzle be discharged from the rate of discharge that is coated with the China ink on the application unanimously.Therefore can satisfy the demand that increases in recent years application width and the China ink that is consistent simultaneously coating.
According to scattering inspection method and equipment about the China ink for solving the second technical problem of the present invention, (described little ink droplet group is by repeatedly discharging little ink droplet by the periphery with little ink droplet group, thereby they are overlapped, thus the collision of little ink droplet is formed being coated with on the application) with the periphery of little ink droplet (described little ink droplet by only once little ink droplet is discharged and collision be coated with on the application form) compare, from the amount of the light of described peripheral reflection or refraction more than the amount from other parts reflection or the light that reflects.Therefore, the periphery of little ink droplet group can visually clearly be identified, and can judge accurately that China ink scatters, and can form the high-quality film with consistent thickness being coated with application thus.And, owing to after judge scattering fully, can carry out the film forming process by discharging continuously China ink, be coated with the high-quality high-grade products that have that application forms so can produce in a large number, and can improving output.
According to be used for to solve the 3rd technical problem about orientation film formation method of the present invention and equipment, because material can be provided, and promptly regulate nozzle by showing defective inkjet nozzle and antedating response from the droplet state, so can prevent waste of material, and improve factory's output.
Description of drawings
Fig. 1 is the schematic diagram about the rate of discharge control appliance of the ink-jet printer of first embodiment of the invention.
Fig. 2 is the schematic diagram that the concrete structure of described rate of discharge control appliance is shown.
Fig. 3 is the diagrammatic top view that the collision status of the little ink droplet of discharging from the rate of discharge control appliance is shown.
Fig. 4 is the diagrammatic top view that the collision status of the little ink droplet of discharging from the rate of discharge control appliance is shown.
Fig. 5 illustrates the schematic diagram that film is formed on the state on the glass substrate by the rate of discharge control appliance.
Fig. 6 is the schematic diagram that the state that the thickness that is formed on the film on the glass substrate by the rate of discharge control appliance is measured is shown.
Fig. 7 illustrates the cutaway view that is formed on the film on the glass substrate by the rate of discharge control appliance.
Fig. 8 illustrates the diagrammatic top view of proofreading and correct the collision status of the little ink droplet that is discharged from afterwards by the rate of discharge control appliance.
Fig. 9 illustrates by the rate of discharge control appliance to proofread and correct the cutaway view that is formed on the film on the glass substrate afterwards.
Figure 10 is the schematic diagram that the work of rate of discharge control appliance is shown.
Figure 11 is the schematic diagram that the work of rate of discharge control appliance is shown.
Figure 12 (a) is diagrammatic top view, and it illustrates ink jet-print head and periphery thereof, and ink jet-print head is the parts that scatter checkout facility about the China ink of second embodiment of the invention; Figure 12 (b) is its diagrammatic side view.
Figure 13 illustrates the diagrammatic side view that China ink scatters the inspection structure partly of checkout facility.
Figure 14 is illustrated in the diagrammatic side view that is coated with the little ink droplet group on the application, and described little ink droplet group is the inspection target that China ink scatters checkout facility.
Figure 15 is the diagrammatic top view that the shape of little ink droplet group is shown, and described little ink droplet group is the inspection target that China ink scatters checkout facility.
Figure 16 (a) is diagrammatic top view, and it is illustrated in another example that is coated with the little ink droplet group on the application, and described little ink droplet group is the inspection target that China ink scatters checkout facility; Figure 12 (b) is its diagrammatic side view.
Figure 17 is the diagrammatic top view of shape that the little ink droplet group of other example is shown, and described little ink droplet group is the inspection target that China ink scatters checkout facility.
Figure 18 illustrates the diagrammatic side view that China ink scatters inspection another example partly of checkout facility.
Figure 19 is illustrated in the diagrammatic side view that is coated with the little ink droplet on the application, and its medium and small ink droplet only is discharged from once.
Figure 20 is the diagrammatic side view that illustrates about the ink-jet type print head jetting inspection apparatus of third embodiment of the invention.
Figure 21 is the top view of ink-jet type print head jetting inspection apparatus.
Figure 22 is the block diagram of work that the critical piece of ink-jet type print head jetting inspection apparatus is shown.
Figure 23 is the critical piece flow chart of Figure 22.
Figure 24 illustrates the droplet pattern when ink-jet type print head jetting inspection apparatus detects the inkjet nozzle obstruction.
Figure 25 illustrates the droplet pattern when ink-jet type print head jetting inspection apparatus detects the discharge of inkjet nozzle deflection.
Figure 26 illustrates the droplet pattern when ink-jet type print head jetting inspection apparatus detects number of droplets from inkjet nozzle.
Figure 27 is the diagrammatic side view that the remodeling of ink-jet type print head jetting inspection apparatus is shown.
Figure 28 is the top view of the ink-jet type print head jetting inspection apparatus shown in Figure 27.
[the Reference numeral table of comparisons]
The rate of discharge control appliance of 1 ink-jet printer
2 glass substrate (being coated with application)
3 printheads
4 nozzles
6 film thickness testing fixtures
7 storage devices
8 rate of discharge control device
The A droplet
The B film
The Ba aimed film thickness
The specific embodiment
To contrast subsequently accompanying drawing is set forth embodiments of the present invention.
[the first embodiment]
Fig. 1 to 11 is for illustrating the example of the first embodiment of the present invention.As shown in Figure 1, the critical piece of the rate of discharge control appliance 1 of ink-jet printer comprises: transparent glass substrate 2, and it is used in the liquid crystal display, and has the characteristic that does not absorb China ink; Controller 5, it is used for control from the amount of the China ink of a plurality of nozzles 4 discharges of printhead 3; Film thickness measuring apparatus 6, it is used for the drain position with respect to each nozzle 4, measures the thickness of the film that is formed in glass substrate 2 by the China ink of discharging from printhead 3.Rate of discharge control appliance 1 also comprises in addition: storage device 7, and it is used for storage corresponding to the correction data of the difference between the aimed film thickness at the black drain position place of each nozzle 4 and the film thickness judged by film thickness measuring apparatus 6; Rate of discharge means for correcting 8, it fetches the correction data that is stored in the storage device 7, and based on the amount of controller 5 corrections from the China ink of each nozzle 4 discharge of printhead 3.
The below elaborates more specifically structure and the operation sequence thereof of the rate of discharge control appliance 1 with described feature.
As shown in Figure 2, a plurality of printheads 3 (shown in the figure 4) with a plurality of nozzles are set up with such orientation, and wherein nozzle is set up in the employed in the first embodiment ink-jet printer.With regard to operation sequence, computer 9 at first calculates the voltage that applies for printhead 3 from the number of the little ink droplet corresponding with aimed film thickness (desired value of film thickness).By will sending to controller 5 as the described calculated value of command signal, indication is executed alive signal and is sent to printhead 3 from controller 5 via applying pressure-wire 10 again conversely, regulates thus the amount of the China ink of discharging from each nozzle of printhead 3.In addition, send the signal that the little ink droplet of indication is discharged from the arbitrary nozzle on arbitrary printhead 3 from controller 5 via discharging data wire 11.
In this case, with the discharge rate of regulating such as above-mentioned adjusting little ink droplet is discharged on glass substrate 2 from the nozzle of each ink gun 3.In this case, China ink is discharged from glass substrate 2, and as shown in Figure 3, thereby each the droplet A that discharges from adjacent nozzle interlocks with 1/2 spacing.Therefore, during collision glass substrate 2,50% little ink droplet A of whole discharge rates of all nozzles will be under the state shown in this figure and (be referred to as 50% discharge pattern).In contrast, when the spacing between each droplet A that discharges from adjacent nozzle is not interlocked and is not departed from, as shown in Figure 4, during collision is coated with application, the little ink droplet A corresponding with 100% of whole discharge rates of all nozzles will be under the state shown in this figure and (be referred to as 100% discharge pattern).
As shown in Figure 5, be combined in above the glass substrate 2 towards the movement by the direction of arrow X indication, discharge pattern with 50% has been discharged when China ink from 4 printheads 3, on the glass substrate 2 in first to fourth the area of application A1, A2, A3, A4 and cross wide application width T and form film.Then, as shown in Figure 6, use film thickness measuring apparatus 6, on the direction that nozzle is set up, termination limit from initial line to the four the area of application A4 first the area of application A1 in the application width T1, measure described film thickness, judge that thus the film thickness on the drain position of the arbitrary nozzle 4 on the printhead 3 in office is thin or thick.
Fig. 7 is cutaway view, and in the state shown in it, film B forms in first the area of application A1 of above-mentioned application width T1.As shown in the drawing, when the blocked up part By of the part Bx that has film thickness deficiency for above-mentioned aimed film thickness Ba at the film B in first the area of application A1 or film thickness, correspondingly by increasing or reducing and proofread and correct the little ink droplet that comes respectively self-corresponding nozzle.Particularly, for example in the distribution of the droplet A on glass substrate 2 shown in Figure 8, according to the quantity that is partly increased the little ink droplet that from the nozzle corresponding with the part Bx of film thickness deficiency, goes out by the indicated droplet of reference character Ax (be referred to as increase to space), according to the quantity (be referred to as from the space and reduce) that is partly reduced the little ink droplet of from the nozzle corresponding with the blocked up part By of film thickness, discharging by the indicated droplet of reference character Ay.On all the area of application A1-A4 between first the area of application and the 4th the area of application, all carry out this correction of the distribution of droplet A on glass substrate 2.
By carrying out above-mentioned correction, the blocked up part By of the part Bx of film thickness deficiency and film thickness approaches to aimed film thickness Ba, as shown in Figure 9.If necessary, repetition is based on the described operation of Fig. 4 to 8, so that so that the blocked up part By of the part Bx of film thickness deficiency and film thickness approaches to aimed film thickness Ba as far as possible, be increased in thus the uniformity of the film thickness in first the area of application on the glass substrate 2 and all the area of application A1-A4 between the 4th the area of application.
Then, the little ink droplet as above proofreaied and correct from all nozzles of printhead 3-comprise of expression the nozzle of the number on the substrate 2-the discharge pattern of distribution of the number of little ink droplet on glass substrate 2 be used as correction data and be stored in the storage device 7 that is arranged in the computer 9 via the write data line 12 shown in Figure 10.Therefore, when for example using a plurality of printhead 3 that the order change is set, the correction data of storing is fetched by rate of discharge means for correcting 8 included in computer 9, and write 13 on each printhead 3 from rate of discharge means for correcting 8, as shown in figure 11, allow thus each printhead 3 easily to realize applying accurately consistent film.
Next, after based on the number of this correction data setting from the little ink droplet of all nozzles of all printheads 3 (based on correction data little ink droplet) corresponding with the distribution of droplet on glass substrate 2, typically oriented film is coated in the transparent glass substrate for liquid crystal display, perhaps colour filter is coated in the transparent glass substrate for organic EL display apparatus.In addition, also can print at the substrate that is consisted of by paper, fiber, plastics, pottery etc.
[the second embodiment]
Figure 12 to 18 is for illustrating the example of the second embodiment of the present invention.Figure 12 (a) scatters the diagrammatic top view of the parts of checkout facility for China ink is shown, described China ink scatter checkout facility comprise ink jet-print head 1, transparent type with shown in the solid line and as by the glass substrate that is coated with application 2 before the little ink droplet coating and shown in broken lines and as by the glass substrate that is coated with application 2 after little ink droplet (the one group little ink droplet 3) coating, Figure 12 (b) is for illustrating each parts 1 that is under the same state, 2 diagrammatic side view.Figure 13 for illustrate check camera 4 and a plurality of lighting apparatus 5,6-they all be the China ink parts that scatter checkout facility-the diagrammatic side view of setting.
According to the second embodiment, shown in Figure 12 (a), (b), when the glass substrate 2 that moves towards the direction of arrow below the ink jet-print head 1 that is maintained at the fixed position, little ink droplet is discharged from the surface of glass substrate 2, and when glass substrate 2 moves to position shown in the dotted line, will the distribution of the little ink droplet group (by the overlapped one group of little ink droplet that forms) 3 on the surface of collision glass substrate 2 be checked.
As shown in figure 13, the structure of inspection unit 7 that is used for checking the distribution of above-mentioned little ink droplet group 3 comprises: check camera 4, it is comprised of the CCD camera, be set up the described substrate part of little ink droplet group 3 collisions of side of glass substrate 2, particularly, be set directly at top and the sensing below of the little ink droplet group 3 on the glass substrate 2; Two lighting apparatus 5, it is arranged on the described substrate part of little ink droplet group 3 collisions of the side of glass substrate 2, thereby from tiltedly right top symmetrically with irradiation on little ink droplet group 3; Two lighting apparatus 6, it is arranged on the side with the glass substrate 2 of the described substrate part opposite side of little ink droplet group 3 collisions, thereby from tiltedly right below symmetrically with irradiation on little ink droplet group 3.
In this case, when just being discharged from and being repeatedly overlapping in same position, little ink droplet forms little ink droplet group 3 in glass substrate 2, and the peripheral 3a of little ink droplet group 3 compares rapid bending with mid portion 3b, and described mid portion 3b is crooked gradually, as shown in figure 14.In other words, and compare at the contact angle α that only is discharged from little ink droplet 13 once shown in the aforementioned figures 19, the peripheral 3a of little ink droplet group 3 is much larger with respect to the contact angle of glass substrate 2.Therefore, when little ink droplet group 3 is examined camera 4 picked-up from lighting apparatus 5,6 irradiation and its image, central circular shaped section 3b shown in Figure 15 compares relative flat and therefore transparent with the annular peripheral 3a shown in the same figure, and visually be beyond recognition, from described annular peripheral 3a reflection or the relatively more light of refraction, therefore can visually be recognized as white afloat.Wherein, by measuring the diameter D of described little ink droplet group 3, can pre-determine the China ink of actual use in ink-jet printer with respect to the distribution of glass substrate 2.
The characteristic that depends on employed China ink, when little ink droplet be discharged from and as above-mentioned when same position is repeatedly overlapping, little ink droplet subsequently may rebound from previous little ink droplet, and the periphery of little ink droplet group may not be crooked as described above.When above-mentioned situation occured, described periphery can not be in white afloat, checked that therefore camera can not judge the distribution of China ink.In this case, shown in Figure 16 (a), (b), a plurality of little ink droplets 13 are repeatedly discharged, and are simultaneously mobile facing one direction, thereby only some little ink droplet 13 is overlapping, and a part of position of collision of each little ink droplet 13 is overlapping thus.Therefore, the image of the annular peripheral 3a of the overlapping shape of the transparent mid portion 3b of the overlapping shape shown in Figure 17 and white buoyance lift can be examined the camera picked-up.Wherein, by using the diameter S of the described image shown in Figure 17 and the little ink droplet group 3 of measurement, can judge that the actual China ink that uses is with respect to the distribution of glass substrate 2 in ink-jet printer.
Figure 18 illustrates another example of inspection unit 7, and lighting apparatus 5,6 is such as aforementioned setting, the inspection camera then is arranged on the side with the described substrate part opposite side glass substrate 2 of little ink droplet group 3 collisions, particularly, be set directly at below and the points upwards of the little ink droplet group 3 on the glass substrate 2.Even at lighting apparatus 5,6 and check that camera 4 is in this set lower time, with under similar circumstances aforementioned, also can absorb the peripheral 3a of little ink droplet group 3, and can accurately pre-determine the distribution of the China ink on glass substrate 2 under white afloat.
When on the glass substrate that will discharge such as the PI China ink of transparent type or UV China ink the transparent type that is being used for liquid crystal display etc., perhaps when on the glass substrate of the UV of transparent type China ink being discharged the transparent type that is being used for organic EL display apparatus, it is particularly useful to scatter checkout facility about the China ink of above-mentioned embodiment.In addition, when the China ink of above-mentioned China ink or other transparent type being discharged on the substrate of the resin substrates of transparent type or the transparent type that is used for producing the semiconductor devices, also to use described China ink and scatter checkout facility.
[the 3rd embodiment]
Figure 20 to 26 is for illustrating the example of the 3rd embodiment of the present invention.Figure 20 is the diagrammatic side view of the print head jetting inspection apparatus of ink-jet type.Figure 21 is the top view of Figure 20, Figure 22 is the block diagram of operation that the critical piece of the 3rd embodiment is shown, Figure 23 is the critical piece flow chart of Figure 22, Figure 24 illustrates the droplet pattern when detecting the obstruction of inkjet nozzle, Figure 25 illustrates the droplet pattern when the deflection that detects inkjet nozzle is discharged, and Figure 26 illustrates the droplet pattern when the amount that detects from the droplet of inkjet nozzle.
Oriented film forming device 1 comprises: inspection area 3, wherein the ink-jet sets 2 that is comprised of 8 inkjet nozzles (A, B, C, D, E, F, G, H) of the droplet of oriented film material is discharged, and according to pattern unusually the checking inkjet nozzle of droplet Ap, Bp, Cp, Dp, Ep, Fp, Gp, Hp; Film forms zone 5, and wherein oriented film material is discharged on substrate 4 by ink-jet sets 2, in order to form oriented film.
3 position movement forms the position in zone 5 to ink-jet sets 2 driven structure (not shown)s to film from the inspection area.Ink-jet sets 2 is moved through 3 positions, namely inspection area 3, film form the zone 5 and return the zone 6, ink-jet sets 2 from other 2 zones 3,4 by returned to described return the zone 6 (states of ink-jet sets 2 above Figure 21).
Ink-jet sets 2 is shifted to the bottom from the top of Figure 21, as shown by arrows, and move through film in ink-jet sets 2 and form at regional 5 o'clock, and China ink is discharged from substrate 4.From the substrate 4 of Figure 21 the time, the first venting is discharged and is formed on topmost, and n subsequently
ThCome following formation.
The inspection area film form the zone 5 and return the zone 6 between, ink-jet sets 2 move to film form the zone 5 before, the state of each inkjet nozzle A to H of 3 pairs of ink-jet sets 2 checks in the inspection area.
In inspection area 3, be provided with the transparent body 7 that is formed by film, thereby the described transparent body 7 is crossing in the direction movement of the moving direction of ink-jet sets 2.The transparent body 7 is rolled into tubular, and is rotated the left side that is connected to Figure 20.The position of being longer than the length of ink-jet sets 2 on the right side of Figure 20 be provided be used to roll around cylinder 8.Cylinder 8 by rolling winding apparatus 8a so that the transparent body 7 unwindings of crossing are rolled winding apparatus 8a so that the transparent body 7 moves, until it is crossing inkjet nozzle A to H at least in once mobile.
Below the transparent body 7, be provided with the transparent substrates 9 of the length of being longer than inkjet nozzle A to H, and described transparent substrates 9 is formed uniformly, thereby the China ink of the ink-jet sets 2 in the future on the self-induced transparency body 7 is discharged on flat surface.
With this movement, the droplet pattern below droplet Ap, Bp after the collision transparent body 7, Cp, Dp, Ep, Fp, Gp, Hp is stored in the droplet pattern storage device 13 of control appliance 12.Control appliance 12 can be personal computer, and comprises the display 14 as the display unit that can show various states.Simultaneously, droplet Ap is corresponding to nozzle A, and droplet Bp is corresponding to nozzle B ..., droplet Hp is corresponding to nozzle H.
Next, contrast accompanying drawing 22 and 23 pairs of ink-jet sets 2, image recognition camera 10 and control appliances 12 are set forth through the movement of inspection area 3.
Beginning on weekdays, after interrupting or the time in office begin to operate.In step 1, signal is sent to from control appliance 12 and rolls winding apparatus 8a, and rolls winding apparatus 8a and move, until the predetermined length of unwinding.Afterwards, as step 2, be used for mobile device 17 work of ink- jet sets 2, and 3 stop in the inspection area.Next, in step 3, the discharger 18 that oriented film material is used to inkjet nozzle A to H with predetermined time the interval discharge on the transparent body 7.
In step 4, be positioned at the transparent body 8 following image recognition cameras 10 and work, and 11 work of image recognition mobile camera moving device.In step 5, the data of the pattern of droplet Ap, the Bp that forms by inkjet nozzle A to H, Cp, Dp, Ep, Fp, Gp, Hp are read, and then, according to step 6, described data are stored in the droplet pattern storage device 13.
In step 7, be stored in the data in the droplet pattern storage device 13 and be compared device 20 and read from the in advance data of registration of normal pattern storage device 19, and the poor evaluating apparatus 21 that is sent to.
In step 8, the pattern that lacks, pattern depart from and greatly/and little pattern is evaluated device 21 and estimates, then be displayed on the display 14 according to step 9.
Lacking in the situation of pattern, at preposition (namely be the part that lack by the circle Dp shown in the dotted line among Figure 24), it will not be evaluated as and collide unsuccessfully the droplet pattern thus, and therefore be shown as nozzle blockage.In the very large situation of the number that lacks part, oriented film material may have been used up, and will show the prompting that will change oriented film material.
In the situation that pattern departs from, the droplet pattern deviates from preposition (namely be the pattern Dp that with respect to normal position Dr depart from by the circle shown in the dotted line among Figure 25) thus, and it will be evaluated and be shown as droplet stroke deflection.Greatly/situation of little pattern under, droplet is greater than or less than predetermined size (pattern Dp, Fp among Figure 26) thus, its rate of discharge that will be evaluated and be shown as inkjet nozzle is greater than or less than default rate of discharge.
Therefore, after the display structure of check display 14, can refill oriented film material or repair nozzle.Especially, be based on directly from following image owing to estimate, so even any inclination among the nozzle A to H all can easily be checked through described situation.And, because ink-jet sets 2 is objects that unique process transparent body 7 moves, so dust on every side can not drop on the transparent body 7, therefore the error of performance that is caused by pollution can not appear.
Only the pattern in step 8 consistent after, then just according to step 10, ink-jet sets 2 forms zone 5 through film and moves, and accurately form oriented film by sequentially oriented film material being discharged on substrate 4, eliminated thus the problem that expensive material such as substrate is wasted and repairs required expense.
According to the 3rd embodiment, have so structure, namely 3 position movement forms the position in zone 5 to ink-jet sets 2 to film from the inspection area.Yet, as to the substituting of described structure, and shown in Figure 27 and 28, can so make up, the position that is ink-jet sets 2 is fixed, and inspection area 3 and film form zone 5 and arranged in succession, moves thereby inspection area 3 forms regional 5 fronts with respect to ink-jet sets 2 at film.In the situation of this structure, the movement that inspection area 3 and film form zone 5 is illustrated by the double dotted line among Figure 28.In this case, the inspection in inspection area 3 is same as described above.
According to the 3rd embodiment, after the inspection of finishing in inspection area 3, carry out the droplet discharge process.Yet the work in inspection area 3 can be carried out discontinuously, but also can carry out when groundwork begins or film carries out after forming several times.
In addition, although the transparent body is illustrated as film, it also can be plate.Equally also clearly, even without the film forming process or there is not film to form the zone, also can show the unusual condition of nozzle.
Claims (3)
1. rate of discharge control method that is used for ink-jet printer comprises:
Film forms step, be used for by will from the China ink that the application width direction has a printhead of a plurality of nozzles discharge have China ink not the application that is coated with of absorption characteristic form film at the described application that is coated with;
The film thickness measuring process, be used for the black drain position corresponding to each nozzle, measure in described film formation step, being formed on the described film thickness that is coated with the film on the application along described application width direction, and detection is from the variation of the black rate of discharge of each nozzle; With
The rate of discharge aligning step, be used for by based on increasing or reduce rate of discharge at aimed film thickness with in the difference between the film thickness that described film thickness measuring process records of the black drain position of each nozzle, in order to eliminate described variation, thereby the rate of discharge from the China ink of each nozzle is proofreaied and correct
Will be in described rate of discharge aligning step for increasing or reducing the correction data that the black rate of discharge of each nozzle makes, be stored in along the mode of the orientation of nozzle in each printhead of a plurality of printheads of configuration.
2. the rate of discharge control method for described ink-jet printer as claimed in claim 1, wherein in described rate of discharge aligning step, detect the large position of the Film Thickness Ratio target film thickness of the film that described film thickness measuring process measures or little position, and increase or reduce to eject from the rate of discharge to the China ink of nozzle that should the test section position, the increase of the rate of discharge that this is black or the correction that reduces change the China ink of being discharged by nozzle in the distribution that is coated with the number of drops on the application.
3. the rate of discharge control appliance of an ink-jet printer has a plurality of printheads of a plurality of nozzles along adjacent setting in the configuration orientation in the application width direction, comprising:
Be coated with application, it has not absorption characteristic of China ink, and is formed with in its surface by discharging the film that China ink forms from described a plurality of printheads;
Film thickness measuring apparatus is used for the black drain position corresponding to each nozzle, to measuring at the described film thickness that is coated with the film that application forms, and detects variation from the black rate of discharge of each nozzle along described application width direction;
The rate of discharge means for correcting, be used for poor based between aimed film thickness and the measured film thickness by described film thickness measuring apparatus at the black drain position of each nozzle, by increasing or less rate of discharge, in order to eliminate described variation, proofread and correct the rate of discharge from the China ink of each nozzle; With
Storage device, being used for storing described rate of discharge means for correcting is the correction data that increases or reduce the black rate of discharge of each nozzle,
Described storage device consists of in the mode of described correction data of storage in each of described a plurality of printheads.
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP242591/2004 | 2004-08-23 | ||
| JP2004242591A JP4159525B2 (en) | 2004-08-23 | 2004-08-23 | Alignment film forming method and ink jet print head ejection inspection device |
| JP2005102753A JP4049780B2 (en) | 2005-03-31 | 2005-03-31 | Ink droplet measurement method after landing and ink droplet measurement device after landing |
| JP102753/2005 | 2005-03-31 | ||
| JP2005171299A JP4364840B2 (en) | 2005-06-10 | 2005-06-10 | Discharge amount control method and discharge amount control apparatus for ink jet printer |
| JP171299/2005 | 2005-06-10 | ||
| PCT/JP2005/015195 WO2006022217A1 (en) | 2004-08-23 | 2005-08-22 | Ink jet printer discharge amount control method, ink droplet spread check method, and orientation film formation method |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102265896A Division CN101706629B (en) | 2004-08-23 | 2005-08-22 | Method for forming alignment film and ink-jet type print head jetting inspection apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101022893A CN101022893A (en) | 2007-08-22 |
| CN101022893B true CN101022893B (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200580028562.6A Active CN101022893B (en) | 2004-08-23 | 2005-08-22 | Ink jet printer discharge amount control method, ink droplet spread check method, and orientation film formation method |
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| Country | Link |
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| JP (1) | JP4159525B2 (en) |
| CN (1) | CN101022893B (en) |
Families Citing this family (35)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010044429A1 (en) * | 2008-10-15 | 2010-04-22 | 芝浦メカトロニクス株式会社 | Method and apparatus for applying droplet |
| JP2010197546A (en) * | 2009-02-24 | 2010-09-09 | Seiko Epson Corp | Droplet discharge apparatus, method of discharging droplet and method of manufacturing color filter |
| JP2010204411A (en) * | 2009-03-04 | 2010-09-16 | Seiko Epson Corp | Liquid drop discharge device, liquid drop discharge method, and method of manufacturing color filter |
| JP5272806B2 (en) * | 2009-03-04 | 2013-08-28 | セイコーエプソン株式会社 | Droplet discharging method and color filter manufacturing method |
| JP2010204414A (en) * | 2009-03-04 | 2010-09-16 | Seiko Epson Corp | Liquid drop discharge device, liquid drop discharge method, and method of manufacturing color filter |
| JP5152041B2 (en) * | 2009-03-04 | 2013-02-27 | セイコーエプソン株式会社 | Droplet discharge apparatus, droplet discharge method, and color filter manufacturing method |
| JP2010204409A (en) * | 2009-03-04 | 2010-09-16 | Seiko Epson Corp | Liquid drop discharge device, liquid drop discharge method, and method of manufacturing color filter |
| JP2010204408A (en) * | 2009-03-04 | 2010-09-16 | Seiko Epson Corp | Liquid drop discharge device, liquid drop discharge method, and method of manufacturing color filter |
| JP2010210739A (en) * | 2009-03-09 | 2010-09-24 | Seiko Epson Corp | Droplet feeding device, droplet feeding method, and method for manufacturing color filter |
| JP5326693B2 (en) * | 2009-03-12 | 2013-10-30 | セイコーエプソン株式会社 | Droplet discharge apparatus, droplet discharge method, and color filter manufacturing method |
| JP5152053B2 (en) * | 2009-03-17 | 2013-02-27 | セイコーエプソン株式会社 | Droplet discharge apparatus, droplet discharge method, and color filter manufacturing method |
| JP2010217826A (en) * | 2009-03-19 | 2010-09-30 | Seiko Epson Corp | Droplet discharge device and thin film forming method |
| JP2010217827A (en) * | 2009-03-19 | 2010-09-30 | Seiko Epson Corp | Droplet discharge device and thin film forming method |
| JP2010224217A (en) * | 2009-03-24 | 2010-10-07 | Seiko Epson Corp | Droplet ejection apparatus and thin film forming method |
| CN102200662A (en) * | 2011-06-30 | 2011-09-28 | 深圳市华星光电技术有限公司 | Method and device for coating alignment films |
| CN102385194B (en) * | 2011-11-17 | 2013-12-04 | 昆山龙腾光电有限公司 | Alignment layer film thickness adjusting system and method |
| US11141752B2 (en) | 2012-12-27 | 2021-10-12 | Kateeva, Inc. | Techniques for arrayed printing of a permanent layer with improved speed and accuracy |
| KR20190123811A (en) | 2012-12-27 | 2019-11-01 | 카티바, 인크. | Techniques for print ink volume control to deposit fluids within precise tolerances |
| KR102495563B1 (en) | 2013-12-12 | 2023-02-06 | 카티바, 인크. | Ink-based layer fabrication using halftoning to control thickness |
| JP2017525600A (en) * | 2014-09-02 | 2017-09-07 | カティーバ， インコーポレイテッド | Fast measurement of droplet parameters in industrial printing systems. |
| CN104570502A (en) * | 2014-12-30 | 2015-04-29 | 深圳市华星光电技术有限公司 | Manufacturing method of spacer of liquid crystal panel and equipment for manufacturing spacer |
| KR101701904B1 (en) * | 2015-07-30 | 2017-02-02 | 세메스 주식회사 | Apparatus and Method for Inspecting Droplet, Apparatus and Method for Droplet Formation having the same |
| CN105068323A (en) * | 2015-08-11 | 2015-11-18 | 武汉华星光电技术有限公司 | Printing correction method and system for alignment film |
| US10562054B2 (en) * | 2016-03-11 | 2020-02-18 | Precision Valve & Automation, Inc. | Automatically controlling a liquid spray pattern |
| CN111788265B (en) * | 2017-04-21 | 2024-04-23 | 柯狄公司 | Compositions and techniques for forming organic thin films |
| KR102038645B1 (en) * | 2017-06-23 | 2019-10-30 | 참엔지니어링(주) | Liquid Dispensing Apparatus and Method of Inspecting the same |
| JP2019051498A (en) * | 2017-09-19 | 2019-04-04 | アイシン精機株式会社 | Inspection device |
| CN107933093A (en) * | 2017-12-21 | 2018-04-20 | 广州市爱司凯科技股份有限公司 | Printer head plug-hole automatic detection device |
| CN108906548B (en) * | 2018-07-06 | 2021-08-24 | Tcl华星光电技术有限公司 | Preparation method of patterning film layer and coating device |
| CN111347777B (en) * | 2018-12-21 | 2021-02-26 | 深圳市汉森软件有限公司 | Printing control method, printing control device, printer and computer readable storage medium |
| CN112437698A (en) | 2019-06-26 | 2021-03-02 | Abb瑞士股份有限公司 | Coating machine and coating method |
| CN111146350B (en) * | 2019-12-16 | 2022-01-25 | 云谷（固安）科技有限公司 | Display panel, preparation method thereof and ink-jet printing equipment |
| KR102470299B1 (en) * | 2020-12-14 | 2022-11-28 | (주)유니젯 | Inkjet printing method for coating thin layer |
| KR102650050B1 (en) * | 2021-08-24 | 2024-03-20 | 세메스 주식회사 | Meniscus measuring apparatus and method, substrate processing apparatus |
| CN114211878B (en) * | 2021-12-13 | 2023-10-17 | 苏州华星光电技术有限公司 | Detection method, storage medium and equipment for ink-jet printing ink |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1445086A (en) * | 2002-03-14 | 2003-10-01 | 精工爱普生株式会社 | Jet image data generating method, forming device, drop spray device, scanning device, liquid crystal display device |
-
2004
- 2004-08-23 JP JP2004242591A patent/JP4159525B2/en not_active Expired - Fee Related
-
2005
- 2005-08-22 CN CN200580028562.6A patent/CN101022893B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1445086A (en) * | 2002-03-14 | 2003-10-01 | 精工爱普生株式会社 | Jet image data generating method, forming device, drop spray device, scanning device, liquid crystal display device |
Non-Patent Citations (3)
| Title |
|---|
| JP特开2002-174718A 2002.06.21 |
| JP特开2004-126424A 2004.04.22 |
| JP特开2004-216210A 2004.08.05 |
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| JP4159525B2 (en) | 2008-10-01 |
| JP2006058772A (en) | 2006-03-02 |
| CN101022893A (en) | 2007-08-22 |
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