CN101022893A - 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 be used to 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 ofly be used to check technology that China ink scatters and a kind ofly be used to use this China ink on glass substrate, to form the technology of oriented film.
Background technology
In recent years, except utilizing ink-jet printer prints on the substrate that is made of paper, fiber, plastics, pottery etc., when on being used for, forming oriented film such as the transparent glass substrate of the equipment of liquid crystal display, perhaps when applying colour filter on the transparent glass substrate in organic EL display apparatus, 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.
Under described situation, the China ink of discharging at a plurality of nozzles of wishing aspect the discharge from the printhead of ink-jet printer is consistent between each nozzle.For example, with regard to the printed material that color wherein is staple, how to consider after each nozzle produces the color with consistent density that 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, can be readily implemented in the uniformity that is coated with the color density on the application so with ink absorption properties from the little ink droplet (ink droplet) of each nozzle discharge.
Yet, use common ink-jet printer to be difficult in to have the application-for example above-mentioned glass substrate-go up of being coated with of the characteristic (not absorbing black characteristic) that do not absorb China ink to form film with consistent thickness.Therefore, not only be difficult to have the described film that forms thickness on the application that is coated with that does not absorb black characteristic especially with the unanimity that is thinner than 1 μ m, even when forming the film of thickness, also need accurately to improve discharging performance from the little ink droplet of each nozzle with 1 μ m or above unanimity.
In order to form film being coated with on the application, attempted by the discharging performance that voltage (producing the operating voltage of pressure oscillation by opening of each nozzle in pressure chamber) is finely tuned the abundant unanimity that produces the little ink droplet of discharging from each nozzle that applies to each nozzle on the printhead of ink-jet printer with consistent film thickness.According to following patent documentation 2, it has disclosed proofreaies and correct being used to regulate from the voltage (operating voltage) that applies of the velocity of discharge of the little ink droplet of nozzle.
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 distribution at the little ink droplet of collision (impact) the insufficient control in back, to produce the problem of failing to merge so, and cause thus to be difficult to form high-quality film being coated with on the application with consistent film thickness such as each little ink droplet that is collided.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, the usual way that is used for controlling the distribution of little ink droplet after collision is coated with application is, by pure water or ink droplet are being coated with on the application surface, use existing contact angle instrument measurement by the surface of the peripheral 13a of little ink droplet 13 be coated with the contact angle α that the surperficial 12a of application 12 forms then, as shown in figure 19.Wherein, contact angle α is more little and sharp-pointed, and it is just good more to be coated with the hydrophily that the application surface had, and little ink droplet scatters also widely more, 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 subjected to the influence 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 the distribution of little ink droplet fully.
In addition, also the another kind of known ink-jet printer is used, and promptly uses ink-jet printer to form directed China ink on the above-mentioned glass substrate by oriented film material is dropped in.Yet,, cause the amount that is difficult to needs that oriented film material is dropped on the position of needs fully thus because ink ejecting method can occur being directed the problem that membrane material blocks such as nozzle defect, nozzle orientation and nozzle.
In order to solve described problem, the droplet state is checked, and if inadequately then add and reclaim oriented film material, if improper then it is abandoned.As the method that is used to check the droplet state, (in patent documentation 3) proposes by making the substrate that is formed with oriented film on it measure film thickness by the inteferometer coating thickness measurement device; If film thickness is not enough, then use inkjet nozzle to drip oriented film again, so that thicken, use the inteferometer coating thickness measurement device to measure film thickness once more then.
[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 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 the application width and the nozzle quantity of printhead itself.This causes very expensive printhead inevitably, and the system of the control printhead complex and expensive that also will become.In addition, the information content of control system will sharply increase, and produce the problem that descends unfavourably such as the coating speed from the China ink of each nozzle thus.
And, even, apply, also can there be the restriction of the precision that applies voltage, and be difficult to realize sufficient uniformity to realize the consistent of little ink droplet by being adjusted in the voltage that applies of each nozzle in the existing ink-jet printer respectively.For example, though the uniformity (changeability) of the oriented film that need in above-mentioned liquid crystal display, be formed on the employed glass substrate 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, be about 2% to realize the film uniformity, need to improve the precision (accuracy) that applies voltage.Yet this is impossible realize actually, even realized, control system also will be complicated more, and information content is huge, causes the coating speed of China ink further to reduce thus.
First technical purpose of the present invention is, the accurate unanimity in the rate of discharge that is coated with the China ink on the application is discharged in realization from each nozzle, and can not be subjected to the influence of the degree of regulation that applies voltage of each nozzle, propose a kind of ink-jet printer thus, it does not have because of the complexity of the control system of printhead and the great number cost that huge information content causes.
At the above-mentioned problem that can not control the distribution of little ink droplet fully, the present inventor has found a kind of method, the ink-jet printer that promptly utilizes reality just being used, allow the little ink droplet collision of the China ink that reality just is being used to remain target-coating target of being applied by reality, measure the diameter of little ink droplet then.According to this method, consider characteristic, 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 such as China ink, 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 to 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 the measurement to the diameter of little ink droplet thus.
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, 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 on the application being coated with.
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, cause the waste of material thus if the oriented film defectiveness will have to entire substrate is all abandoned so.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 frequent correction.
The 3rd purpose of the present invention is, proposes a kind of oriented film formation method, judges before oriented film is formed on the substrate wherein whether inkjet nozzle exists unusually, can proofread and correct nozzle in advance thus.
The rate of discharge control method about ink-jet printer of the present invention that is used to solve 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 being coated with on the application of absorption characteristic form film on the application described being 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, thereby the rate of discharge from the China ink of each nozzle is proofreaied and correct 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.
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, to measuring with the film thickness of the corresponding film of black drain position of each nozzle, 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 the rate of discharge (promptly 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.Therefore, checking from the variation of the rate of discharge of the China ink of each nozzle in advance and proofreading and correct rate of discharge, thereby eliminating after this variation, can carry out actual film by printhead and form or the like from each nozzle.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 being discharged from unanimity in the rate of discharge that is coated with the China ink on the application from each nozzle.Therefore can satisfy the demand that increases application width in recent years and the China ink that is consistent simultaneously coating.With regard to regard to adopting after the rate of discharge of proofreading and correct that described method is actual and applying from the China ink of each nozzle, although forming oriented film or will be coated in such as the coating material of transparent UV China ink in the organic EL display apparatus on the transparent glass substrate in the liquid crystal display etc. is effective especially on the transparent glass substrate, described method also can be used for printing on 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 and be used 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 being stored, by increasing or reduce to proofread and correct rate of discharge from the China ink of each nozzle.During actual China ink coating, can therefore can improve processing speed and convenience thus by reading described correction data from storage device (memory cell) and regulating each nozzle and come black rate of discharge is proofreaied and correct by printhead.In addition, for example with regard to the printer that comprises a plurality of printheads that are set up with a plurality of nozzles, owing to be used for being stored as the 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 the China ink of accurate correcting value from each nozzle.And, even when the discharge characteristic of each nozzle along with the time when change, as long as produce and store the correction data again, just can be only easily discharge China ink fully 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 to solve first technical problem comprises: be coated with application, it has not absorption characteristic of China ink, and is formed with in its surface by a plurality of nozzles from printhead and discharges the film that China ink forms; The film thickness measurement mechanism is used for the black drain position corresponding to each nozzle, to measuring at the film thickness that is coated with the film that forms on the application; The rate of discharge means for correcting, be used for poor based between aimed film thickness and measured film thickness by described film thickness measurement mechanism at the black drain position of each nozzle, by increasing or less rate of discharge, proofread and correct rate of discharge from the China ink of each nozzle.
According to this equipment, the discharge by China ink have China ink not the application (for example glass substrate) that is coated with of absorption characteristic go up and form described film, and come measuring with the film thickness of the corresponding film of black drain position of each nozzle by operation film thickness measurement mechanism.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 (promptly 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 and the identical effect of 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 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 that is used to store the correction data in addition, and described correction data are used for proofreading and correct each black rate of discharge by increasing or reducing rate of discharge.
Even under described situation, because according to the correction data of being stored, by increasing or reduce to proofread and correct rate of discharge, so can obtain with top about the identical effect of the described effect of corresponding situation from the China ink of each nozzle.
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 Mo application width increases along with the increase of the size that is coated with application (glass substrate that for example is used for liquid crystal display) 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.
About the method that is used to solve second technical problem of the present invention is that China ink scatters inspection method, be used for when the collision of little ink droplet transparent or translucent have China ink not absorption characteristic be coated with on the application time check that the China ink of little ink droplet scatters, 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 is checked 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 in the surface that is coated with application becomes big, and from the amount of the light of described peripheral reflection or refraction more than 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, the high-quality film that forms the thickness with unanimity on the application can be coated with.
Particularly, owing to being cleaned in the cleaning of the surface that is coated with application before China ink is discharged step, the surface quality that makes each be coated with application thus changes, so even invariable such as the 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 judging distribution fully, carry out the film forming process, can produce the product that has being coated with the high-quality film that forms on the application in a large number so by discharging China ink continuously.On the contrary, whether fully promptly do not carry out the film forming process in the distribution that is coated with on the application, will produce a large amount of defectives so, cause the problem that obviously descends such as output thus by discharging China ink continuously if judge little ink droplet as described above.In view of described situation,,, still can accurately judge little ink droplet in the distribution that is coated with on the application, therefore the problem that can avoid described output obviously to descend effectively even when on the substrate of the China ink of transparent type being discharged in transparent type according to the present invention.
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, promptly all 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 all 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 to absorb the image of the periphery of little ink droplet group, and China ink checked in the distribution that is coated with on the application based on the image that is absorbed.
Therefore,, scatter diameter or width, for example, also can measure automatically so this will help to measure China ink because the periphery of little ink droplet group is image by the imaging device picked-up.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 is the glass substrate that is used for liquid crystal display or organic EL display apparatus, and described China ink is the coating material that is used for the oriented film material of liquid crystal display or is used for organic EL display apparatus, and 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,, can obtain above-mentioned effect so if black device for transferring is an ink-jet printer.
What be used to solve 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 is checked, 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 is checked in the distribution that is coated with on the application China ink.
Scatter checkout facility according to this China ink, by comprising with the corresponding feature of said method and for above-mentioned reasons, can judge accurately that China ink scatters, and can be coated with the high-quality film that forms thickness on the application, and also can avoid output obviously to descend with unanimity.
In this case, when using viscosity for example during as above-mentioned China ink, can obtain above-mentioned various effects as the membrane material of 30dyn/cm to 40dyn/cm significantly as 5cp to 16cp and surface tension.
Be used to solve comprising of the 3rd technical problem: check step about oriented film formation method of the present invention, be used for droplet pattern, to checking unusually in the inkjet nozzle 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); Film formation step is used for making ink-jet relative with substrate by when when the droplet pattern of checking step is in the predetermined scope, and by the use inkjet nozzle 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 on 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 storage are in advance compared, whether be in the predetermined scope so that judge the droplet pattern.Therefore, owing in the discharge scope, do not have tangible object, thus avoided pollution from working environment, and can check reliably.
And, in checking step, in advance droplet pattern and the data of being stored are compared, when the droplet pattern is not in preposition, judge and show nozzle blockage,, judge and show the skew of droplet stroke when the position deviation of droplet pattern during in preposition, 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 discern and repair defective oriented film material or inkjet nozzle.
Be used 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 uses inkjet nozzle to be discharged from; Film forms the zone, is used for forming oriented film by using inkjet nozzle to discharge and collide oriented film material; Mobile device, be used for when being in the predetermined scope according to described inspection droplet pattern, make inkjet nozzle move to film and form the zone, perhaps make the position of inspection area move to the position relative with inkjet nozzle with the position that film forms the zone from the inspection area.
According to this equipment, owing to will can not moving to the film that is used for oriented film, inkjet nozzle before inkjet nozzle being judged to be normally by inspection forms the zone, so can prevent from unnecessarily to form 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 droplet pattern that is read by described image recognition camera and the normal pattern of storing are in advance compared; Whether evaluating apparatus is used to estimate from the result of described comparison means normal or unusual.Thus, to comparing from the data of the droplet pattern of the collision that lower surface read of the described transparent body and the data of storage in advance, whether be in the predetermined scope so that judge described droplet pattern by described image recognition camera.Therefore, owing in the discharge scope, do not have tangible object, thus avoided pollution from working environment, and can check reliably.
And, in the inspection area, in advance droplet pattern and the data of being stored are compared, when the droplet pattern is not in preposition, judge and show nozzle blockage,, judge and show the skew of droplet stroke when the position deviation of droplet pattern during in preposition, 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 discern and repair defective oriented film material or inkjet nozzle.
As mentioned above, according to be used to solve first technical problem about rate of discharge control method and the equipment that is used 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 to measuring with the film thickness of the corresponding film of black drain position of each nozzle, 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 the rate of discharge from the China ink of each nozzle is proofreaied and correct by the rate of discharge that increases or reduce China ink.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 being discharged from unanimity in the rate of discharge that is coated with the China ink on the application from each nozzle.Therefore can satisfy the demand that increases application width in recent years and the China ink that is consistent simultaneously coating.
According to scattering inspection method and equipment about the China ink that is used to solve 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 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 be coated with the high-quality film that forms the thickness with unanimity on the application thus.And, owing to after judging distribution fully, can carry out the film forming process by discharging China ink continuously, thus the high-quality high-grade products that have that form on the application being coated with can be produced in a large number, and can improve output.
Form method and apparatus according to what be used to solve the 3rd technical problem about oriented film of the present invention, 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 is the schematic diagram that the state on the glass substrate that film is formed on by the rate of discharge control appliance is shown.
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 a 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 a 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 vertical 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 vertical 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 accompanying drawing is subsequently set forth embodiments of the present invention.
[first embodiment]
Fig. 1 to 11 is for illustrating the example of 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 controlling the amount of the China ink of discharging from a plurality of nozzles 4 of printhead 3; Film thickness measurement mechanism 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 to store the correction data corresponding to 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 measurement mechanism 6; Rate of discharge means for correcting 8, it fetches the correction data that are 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.
Elaborate the structure more specifically and the operation sequence thereof of rate of discharge control appliance 1 below 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 that is used for printhead 3 from the number with the corresponding little ink droplet of aimed film thickness (desired value of film thickness).By will sending to controller 5 as the described calculated value of command signal, the signal that indication applies voltage conversely again slave controller 5 be sent to printhead 3 via applying pressure-wire 10, regulate the amount of the China ink of discharging from each nozzle of printhead 3 thus.In addition, slave controller 5 sends the signal that the little ink droplet of indication is discharged from the arbitrary nozzle on arbitrary printhead 3 via discharging data wire 11.
In this case, with the discharge rate of regulating little ink droplet is discharged on glass substrate 2 from the nozzle of each ink gun 3 as above-mentioned adjusting.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 nozzles 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 nozzles is not interlocked and is not departed from, as shown in Figure 4, during collision is coated with application, will be under the state shown in this figure with 100% corresponding little ink droplet A of whole discharge rates of all nozzles and (be referred to as 100% discharge pattern).
As shown in Figure 5, be combined in above the glass substrate 2 towards moving 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 measurement mechanism 6, on the direction that nozzle is set up, termination limit from initial line to the four the area of application A4 of first the area of application A1 in 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 a 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 self-corresponding nozzle respectively.Particularly, for example in the distribution of the droplet A on glass substrate 2 shown in Figure 8, according to partly increase by the indicated droplet of reference character Ax from the corresponding nozzle of the part Bx of film thickness deficiency the quantity (being referred to as to the space increases) of the little ink droplet that goes out, according to partly reduce by the indicated droplet of reference character Ay from the blocked up corresponding nozzle of part By of film thickness the quantity (be referred to as from the space and reduce) of the little ink droplet of discharging.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 make the part Bx of film thickness deficiency and the blocked up part By of film thickness approach to aimed film thickness Ba as far as possible, be increased in 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 thus.
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 and proofread and correct data and be stored in the storage device 7 that is set in the computer 9 via the write data line shown in Figure 10 12.Therefore, when for example using a plurality of printhead 3 be provided with that order changes, the correction data of being stored are fetched by included rate of discharge means for correcting 8 in computer 9, and write 13 on each printhead 3 from rate of discharge means for correcting 8, as shown in figure 11, allow each printhead 3 easily to realize the consistent film of coating accurately thus.
Next, after the number that the little ink droplet (based on proofreading and correct data and the corresponding little ink droplet of the distribution of droplet on glass substrate 2) from all nozzles of all printheads 3 is set based on this correction data, typically oriented film is coated in the transparent glass substrate that is used for liquid crystal display, perhaps colour filter is coated in the transparent glass substrate that is used for organic EL display apparatus.In addition, also can on the substrate that constitutes by paper, fiber, plastics, pottery etc., print.
[second embodiment]
Figure 12 to 18 is for illustrating the example of second embodiment of the present invention.Figure 12 (a) is for illustrating the diagrammatic top view that China ink scatters the parts of checkout facility, 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 the diagrammatic side view of each parts 1,2 that is under the same state.Figure 13 be 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 second embodiment, shown in Figure 12 (a) and (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 check 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.
As shown in figure 13, the structure of inspection unit 7 that is used to check the distribution of above-mentioned little ink droplet group 3 comprises: check camera 4, it is made up 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 the top and the directed downwards of the little ink droplet group 3 on the glass substrate 2; Two lighting apparatus 5, it is set at the described substrate part of little ink droplet group 3 collisions of side of glass substrate 2, thereby symmetrically light is radiated on the little ink droplet group 3 from oblique right top; Two lighting apparatus 6, it is arranged on little ink droplet group 3 and collides the side of the glass substrate 2 of described substrate part opposite side, thereby light is radiated on the little ink droplet group 3 symmetrically from oblique right below.
In this case, when little ink droplet just is being discharged from and is forming when repeatedly overlapping in same position little ink droplet group 3 on 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 a lot of greatly with respect to the contact angle of glass substrate 2.Therefore, when little ink droplet group 3 is penetrated from the illumination of lighting apparatus 5,6 and its image when being examined camera 4 picked-ups, 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 more relatively 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 of the distribution of the China ink of actual use in ink-jet printer with respect to 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 took place, 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) and (b), a plurality of little ink droplets 13 are repeatedly discharged, and move facing one direction simultaneously, thereby only some little ink droplet 13 are 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 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 provided with as described above, 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 the below and the points upwards of the little ink droplet group 3 on the glass substrate 2.Even at lighting apparatus 5,6 with check that camera 4 is in this set following 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 the transparent type that is being used for liquid crystal display etc. such as the PI China ink of transparent type or UV China ink, 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 vertical 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 ink-jet sets 2 discharges formed by 8 inkjet nozzles (A, B, C, D, E, F, G, H) of the droplet of oriented film material, and according to pattern the checking unusually 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, so that form oriented film.
Ink-jet sets 2 is driven the structure (not shown), and 3 position moves to the position that film forms zone 5 from the inspection area.Ink-jet sets 2 is moved through 3 positions, and promptly inspection area 3, film form zone 5 and return zone 6, and ink-jet sets 2 is returned to described zone 6 (states of ink-jet sets 2 above Figure 21) of returning from other 2 zones 3,4.
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, 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 is all checked in the inspection area.
In inspection area 3, be provided with the transparent body of forming by film 7, thereby the described transparent body 7 moves crossing on the direction 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 rolls winding apparatus 8a and makes the transparent body 7 move by rolling the feasible transparent body 7 unwindings of crossing of winding apparatus 8a, crosses inkjet nozzle A to H up to it at least in once moving.
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.
Move with this, 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 a 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 moving 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, up to the predetermined length of unwinding.Afterwards,, be used for mobile device 17 work of ink- jet sets 2, and 3 stop in the inspection area as step 2.Next, in step 3, oriented film material is used to the discharger 18 of inkjet nozzle A to H and discharges at interval on the transparent body 7 with preset time.
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, and difference is sent to evaluating apparatus 21 from the data of registration in advance of normal pattern storage device 19.
In step 8, the pattern that lacks, pattern depart from and greatly/and little pattern estimated by evaluating apparatus 21, is displayed on the display 14 according to step 9 then.
Lacking under the situation of pattern, the droplet pattern is not preposition (promptly is the part that lacks by the circle Dp shown in the dotted line among Figure 24) thus, and it will be evaluated as the collision failure, and therefore is shown as nozzle blockage.Under the very big 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.
Under the situation that pattern departs from, the droplet pattern deviates from preposition (promptly is the pattern Dp that departs from respect to normal position Dr by the circle shown in the dotted line among Figure 25) thus, and it will be estimated 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 estimated 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 after the unanimity of the pattern in step 8, 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 the problem that expensive material such as substrate is wasted and repairs required expense thus.
According to the 3rd embodiment, have so structure, promptly 3 position moves to the position that film forms zone 5 to ink-jet sets 2 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 be provided with in succession, moves thereby inspection area 3 forms regional 5 fronts with respect to ink-jet sets 2 at film.Under the situation of this structure, inspection area 3 and film form moving of zone 5 and are 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 a 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 (22)
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 of a plurality of nozzles of printhead discharge have China ink not being coated with on the application of absorption characteristic form film on the application described being coated with;
The film thickness measuring process is used for the black drain position corresponding to each nozzle, measures be formed on the described film thickness that is coated with the film on the application in described film formation step; With
The rate of discharge aligning step, be used for by based on increasing or reduce rate of discharge, thereby the rate of discharge from the China ink of each nozzle is proofreaied and correct 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.
2. the rate of discharge control method that is used for described ink-jet printer as claimed in claim 1, wherein in described rate of discharge aligning step, produce and storage is used for proofreading and correct data from the rate of discharge of the China ink of each nozzle by increasing or reducing rate of discharge.
3. the rate of discharge control method that is used for described ink-jet printer as claimed in claim 1 wherein in described rate of discharge aligning step, is discharged from the described distributed number that is coated with the little ink droplet on the application from each nozzle and is changed.
4. the rate of discharge control appliance of an ink-jet printer 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;
The film thickness measurement mechanism 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 forms on the application; With
The rate of discharge means for correcting, be used for poor based between aimed film thickness and measured film thickness by described film thickness measurement mechanism at the black drain position of each nozzle, by increasing or less rate of discharge, proofread and correct rate of discharge from the China ink of each nozzle.
5. the rate of discharge control appliance of described ink-jet printer as claimed in claim 4, wherein said rate of discharge means for correcting also comprises the storage device that is used to store the correction data in addition, and described correction data are used for proofreading and correct each black rate of discharge by increasing or reducing described rate of discharge.
6. the rate of discharge control appliance of described ink-jet printer as claimed in claim 4 wherein has a plurality of printheads adjacent setting on the nozzle arrangement direction of described a plurality of nozzles.
7. a China ink scatters inspection method, be used for when the collision of little ink droplet transparent or translucent have China ink not absorption characteristic be coated with on the application time check that the China ink of described little ink droplet scatters, described little ink droplet is to be discharged from the transparent or translucent China ink that is coated with on the application described from black device for transferring, and described method comprises:
Described little ink droplet repeatedly discharged described be coated with on the application, thereby described little ink droplet is overlapped; With
Based on image, check being dispersed in the described China ink that is coated with on the application by the periphery of the little ink droplet group that forms of the described described little ink droplet that is coated with application of collision.
8. China ink as claimed in claim 7 scatters inspection method, wherein be coated with on the application in that described little ink droplet is repeatedly discharged described, thereby described little ink droplet overlapped during, described little ink droplet is so discharged, promptly all some is overlapping for each little ink droplet.
9. China ink as claimed in claim 7 scatters inspection method, also being included in the described described little ink droplet of application side that is coated with in addition collides part or is arranged to the picture device at its rear side, be used to absorb the image of the periphery of described little ink droplet group, and China ink checked in the described distribution that is coated with on the application based on the image that is absorbed.
10. China ink as claimed in claim 7 scatters inspection method, the wherein said application that is coated with is the glass substrate that is used for liquid crystal display or organic EL display apparatus, and described China ink is the coating material that is used for the oriented film material of described liquid crystal display or is used for described organic EL display apparatus.
11. China ink as claimed in claim 7 scatters inspection method, wherein said black device for transferring is an ink-jet printer.
12. a China ink scatters checkout facility, 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 described little ink droplet is checked, described little ink droplet is to be discharged from the transparent or translucent China ink that is coated with on the application described from black device for transferring, and
Thereby described little ink droplet is repeatedly discharged described and is coated with on the application, described thus little ink droplet is overlapped, and, described China ink is checked in the described distribution that is coated with on the application based on image by the periphery of the little ink droplet group that forms of the described described little ink droplet that is coated with application of collision.
13. an oriented film formation method comprises:
Check step, be used for droplet pattern, checking unusually in the described inkjet nozzle according to the collision of the oriented film material that uses inkjet nozzle to be discharged from; With
Film forms step, be used for by when the described droplet pattern in described inspection step is in the predetermined scope, make described ink-jet relative, and described oriented film material is discharged and collided on described substrate, thereby form oriented film by the described inkjet nozzle of use with substrate.
14. oriented film formation method as claimed in claim 13, wherein in described inspection step, use described inkjet nozzle that described oriented film material is discharged and collided on the transparent body, and the data of the droplet pattern of the described collision of being read from the lower surface of the described transparent body by the image recognition camera and the data of storage are in advance compared, whether be in the described predetermined scope so that judge described droplet pattern.
15. oriented film formation method as claimed in claim 13 wherein in described inspection step, compares described droplet pattern and the data of being stored in advance, when described droplet pattern is not in preposition, judges and the demonstration nozzle blockage.
16. oriented film formation method as claimed in claim 13, wherein in described inspection step, in advance the described droplet pattern and the data of being stored are compared,, judge and show the skew of droplet stroke when the position deviation of described droplet pattern during in preposition.
17. oriented film formation method as claimed in claim 13, wherein in described inspection step, in advance described droplet pattern and the data of being stored are compared, when described droplet pattern is greater than or less than pre-sizing, the rate of discharge of described inkjet nozzle judged and is shown as be greater than or less than default rate of discharge.
18. an ink-jet type print head jetting inspection apparatus comprises:
The inspection area is used for checking the unusual of described inkjet nozzle according to the droplet pattern of the collision of the oriented film material that uses inkjet nozzle to be discharged from;
Film forms the zone, is used for forming oriented film by using described inkjet nozzle to discharge and collide described oriented film material;
Mobile device, be used for when being in the predetermined scope according to the described droplet pattern of described inspection, make described inkjet nozzle move to described film and form the zone, perhaps make the position of described inspection area move to the position relative with described inkjet nozzle with the position that described film forms the zone from described inspection area.
19. ink-jet type print head jetting inspection apparatus as claimed in claim 18, wherein said inspection area comprises: the transparent body, its be positioned at described inkjet nozzle below; The image recognition camera is used for reading the droplet pattern of described collision below the described transparent body; Comparison means is used for droplet pattern that is read by described image recognition camera and the normal pattern of storing are in advance compared; Whether evaluating apparatus is used to estimate from the result of described comparison means normal or unusual.
20. ink-jet type print head jetting inspection apparatus as claimed in claim 19 also comprises display device in addition, is used for when described droplet pattern is not positioned at preposition judging according to described evaluating apparatus and showing nozzle blockage.
21. ink-jet type print head jetting inspection apparatus as claimed in claim 19 also comprises display device in addition, judges according to described evaluating apparatus when being used for position deviation when described droplet pattern in preposition and shows the skew of droplet stroke.
22. ink-jet type print head jetting inspection apparatus as claimed in claim 19, also comprise display device in addition, be used for when described droplet pattern is greater than or less than pre-sizing the rate of discharge of described inkjet nozzle being judged and to be shown as being greater than or less than default rate of discharge according to described evaluating apparatus.
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004242591A JP4159525B2 (en) | 2004-08-23 | 2004-08-23 | Alignment film forming method and ink jet print head ejection inspection device |
| JP242591/2004 | 2004-08-23 | ||
| JP102753/2005 | 2005-03-31 | ||
| JP2005102753A JP4049780B2 (en) | 2005-03-31 | 2005-03-31 | Ink droplet measurement method after landing and ink droplet measurement device after landing |
| 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 true CN101022893A (en) | 2007-08-22 |
| CN101022893B CN101022893B (en) | 2013-03-27 |
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Family Applications (1)
| 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 |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4159525B2 (en) |
| CN (1) | CN101022893B (en) |
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| JP2006058772A (en) | 2006-03-02 |
| JP4159525B2 (en) | 2008-10-01 |
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