CN101085570A - Systems and methods for calibrating inkjet print head nozzles using light transmittance measured through deposited ink - Google Patents
Systems and methods for calibrating inkjet print head nozzles using light transmittance measured through deposited ink Download PDFInfo
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- CN101085570A CN101085570A CNA2007101104633A CN200710110463A CN101085570A CN 101085570 A CN101085570 A CN 101085570A CN A2007101104633 A CNA2007101104633 A CN A2007101104633A CN 200710110463 A CN200710110463 A CN 200710110463A CN 101085570 A CN101085570 A CN 101085570A
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- 238000002834 transmittance Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 42
- 239000000758 substrate Substances 0.000 claims abstract description 68
- 238000003384 imaging method Methods 0.000 claims abstract description 6
- 238000007641 inkjet printing Methods 0.000 claims description 34
- 230000003287 optical effect Effects 0.000 claims description 17
- 238000001514 detection method Methods 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 14
- 238000005259 measurement Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 7
- 238000005286 illumination Methods 0.000 claims description 5
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- 239000000523 sample Substances 0.000 claims 1
- 230000004044 response Effects 0.000 abstract description 2
- 238000010304 firing Methods 0.000 abstract 2
- 239000000976 ink Substances 0.000 description 52
- 239000011159 matrix material Substances 0.000 description 6
- 238000007639 printing Methods 0.000 description 6
- 239000003086 colorant Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
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- 229920000642 polymer Polymers 0.000 description 2
- 108091092195 Intron Proteins 0.000 description 1
- 241000124429 Phlox Species 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
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- 239000007787 solid Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/07—Ink jet characterised by jet control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
- B41J29/393—Devices for controlling or analysing the entire machine ; Controlling or analysing mechanical parameters involving printing of test patterns
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Optical Filters (AREA)
- Coating Apparatus (AREA)
- Ink Jet (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The present invention provides inkjet print nozzle calibration systems and methods for calibrating an inkjet print nozzle. The systems may include an inkjet print nozzle adapted to dispense ink onto a substrate in response to a firing pulse voltage, a light source adapted to illuminate the dispensed ink, an imaging system adapted to measure a transmittance of light through the dispensed ink, and a controller adapted to controllably adjust the inkjet print nozzle based on the measured light transmittance. The methods may include dispensing ink onto a surface with an inkjet print nozzle set at a firing pulse voltage, measuring a light transmittance characteristic of the dispensed ink, determining a volume of ink dispensed based on the transmittance characteristic, and adjusting a fire pulse voltage of the inkjet print nozzle based on a difference between the determined volume of ink dispensed and an expected volume level of ink dispensed.
Description
The application requires to enjoy submission on June 7th, 2006 and denomination of invention is the U.S. Patent application No.60/804 of " SYSTEMS ANDMETHODS FOR CALIBRATING INKJET PRINT HEAD NOZZLES USINGLIGHT TRANSMITTANCE MEASURED THROUGH DEPOSITED INK " (agent's file No.11129/L/AKT/INKJET/RKK), 166 priority is incorporated herein its full content as a reference.
The cross reference of related application
The application relates to U. S. application following common transfer, co-pending is incorporated herein each and applies for reference:
The denomination of invention that on March 24th, 2006 submitted to is the U.S. Provisional Patent Application No.60/785 of " METHODS AND APPARATUS FORINK JET PRINTING ", 594 (attorney docket No.9521-L4);
The denomination of invention that on May 4th, 2005 submitted to is the U.S. Patent application No.11/123 of " DROPLET VISUALIZATION OFINKJETTING ", 502 (attorney docket No.9705);
The denomination of invention that on August 25th, 2005 submitted to is the U.S. Patent application No.11/212 of " METHODS AND APPARATUS FORALIGNING INKJET PRINT HEAD SUPPORTS ", 043 (attorney docket No.9521-6);
The denomination of invention that on September 13rd, 2006 submitted to is the U.S. Patent application No.11/521 of " METHOD AND APPARATUS FORMANUFACTURING A PIXEL MATRIX OF A COLOR FILTER FOR A FLATPANEL DISPLAY ", 177 (attorney docket No.10502); And
The denomination of invention that on September 28th, 2006 submitted to is the U.S. Patent application No.11/536 of " METHODS AND APPARATUS FORADJUSTING PIXEL PROFILES ", 540 (attorney docket No.10448).
Background technology
Flat panel display industry has attempted to adopt inkjet printing with the manufacturing display device, and more specifically, is used for the colour filter of flat-panel monitor.Because the pixel inking hole that ink is assigned to wherein when printing the pattern that is used for colour filter may be especially little, so it is very big to print the possibility of error.In addition, the manufacturing in printhead changes and can cause the print performance do not expected or irregular.Therefore, be used for calibrating inkjet print head and adjust the effective ways of print parameters and device for preferred.
Summary of the invention
In a scheme of the present invention, ink-jet comprises that for the embodiment of nozzle calibration system being suitable for responding initial pulse parameter (for example, initial pulse voltage, initial pulse width, initial pulse electric current, initial pulse energy, initial pulse frequency, initial pulse waveform etc.) is assigned to ink inkjet-printing nozzle on the substrate, the light source that is distributed in the ink on the substrate of being suitable for throwing light on, is suitable for measuring the imaging system of light transmittance by ink distribution; And be coupled to imaging system and nozzle printing nozzle and be suitable for adjusting the controller of one or more inkjet-printing nozzles controlledly based on the light transmittance that records.
In another program of the present invention, the embodiment of the method for calibrating inkjet printing nozzle comprises that the distribution ink is to the substrate with inkjet-printing nozzle, this nozzle is arranged on initial pulse parameter (for example, initial pulse voltage, initial pulse width, initial pulse electric current, initial pulse energy, initial pulse frequency, initial pulse waveform etc.); The light transmittance characteristic of ink that measurement distributes; Based on record the light transmittance characteristic determine the quantity of ink distributed, and based on the determined initial pulse voltage that distributes the difference adjustment inkjet-printing nozzle between quantity of ink and the desired quantity of ink.
By the following detailed description, additional claims and accompanying drawing, further feature of the present invention and scheme will be more apparent.
Description of drawings
Figure 1A is the schematic diagram of inkjet-printing nozzle calibration system according to the embodiment of the present invention;
Figure 1B is the schematic diagram according to the inkjet-printing nozzle calibration system of another embodiment of the present invention;
Fig. 2 is the presentation graphs of the colour filter with the print pixel that is used for reference according to the embodiment of the present invention;
Fig. 3 is the presentation graphs of single display pixel on substrate that according to the embodiment of the present invention the data file by using camera to produce is represented;
Fig. 4 is a flow chart of describing calibrating inkjet printing nozzle method according to the embodiment of the present invention.
The specific embodiment
Ink-jet printer frequently uses one or more ink jet-print heads of installing in the one or more printing beds that move above such as the substrate of glass or polymer flat board, be used for the colour filter of flat-panel monitor with printing.In some embodiments, moving substrate below the printhead on the platform of accurately control.Along with substrate moves with respect to printhead, the individual nozzle in the inkjet printing control system excitation printhead is to distribute ink droplet (or other drop) or to be ejected on the substrate to form image.
The excitation print-head nozzle can comprise transmission initial pulse signal or initial pulse voltage (V
Fp) to single nozzles so that injection apparatus distributes a large amount of inks.In some printheads, pulse voltage is used for trigger, for example, ink is released the piezoelectric element of nozzle.Thereby pulse voltage makes laser response laser emission film that ink is released nozzle in other printhead.Can adopt other type transducer that is suitable for activation energy is changed into the mechanical injection of the ink by nozzle.Therefore, the signal that sends to nozzle can comprise, for example, and initial pulse voltage, initial pulse width, initial pulse electric current, initial pulse energy, initial pulse frequency and/or initial pulse waveform.
Change and/or other factors owing to make, for specific initial pulse parameter P
Fp(for example, for specific initial pulse voltage V
Fp, the initial pulse width W
Fp, the initial pulse electric current I
Fp, the initial pulse ENERGY E
Fp, initial pulse frequency F
Fp, initial pulse waveform S
FpDeng), nozzle may not distribute the ink droplet of equivalent.In some cases, the amount of ink droplet can be with P
FpNonlinear change.In other words, the manufacturing in printhead changes the nonlinear change can cause the same nozzle of quantity of ink eject from to(for) different initial pulses and the inks that can go out different amounts for identical initial pulse from different nozzle ejection.
By the light quantity of measurement process, the invention provides a kind of method of determining by the quantity of ink of single nozzles distribution by the pixel transmission of the ink filling of single nozzles distribution.More specifically, at known P
FpInk can be assigned to down in the display unit inking hole on the substrate, utilize method of the present invention then, can measure by in each pixel inking hole, distributing the light transmittance of ink, ink thickness in its corresponding each pixel inking hole is with the quantity of ink of determining to be distributed by each nozzle (thickness is proportional to quantity of ink).By getting in touch known P
FpThe quantity of ink of surveying with being determined by light transmittance the present invention further provides a kind of definite quantity of ink and P of distributing
FpBetween the method for relation, and utilize this relation with the calibrating inkjet printing nozzle.This quantity of ink information can be used for calibrating each nozzle, thereby can reach the consistent degree of depth of ink in the pixel inking hole.
During the ordinary maintenance program, perhaps during the printing of expecting size or range, respond the diagnostic test of carrying out at one or more demonstration objects by the quantity of ink that one or more nozzle distributed, can carry out on a scheduled basis according to calibration steps provided by the present invention in expression.
Figure 1A is a light transmittance used according to the invention with the schematic diagram of the inkjet-printing nozzle calibration system 100 of the quantity of ink of determining to be assigned to the colour filter display unit that is positioned on the substrate.
As shown in the figure, can be that the substrate 102 of the flat board made by glass, polymer etc. is arranged on the brace table 104.Substrate 102 can comprise black matrix material, and this black matrix material is included on the whole surface of substrate in a row and the pixel inking hole that becomes row to arrange.Pixel inking hole (more specifically illustrating in Fig. 2) is used to store the ink that distributes from the ink jet-print head (not shown).Each pixel can have identical length and width dimensions (physical length of specific pixel can be different with width), and therefore in the matrix on substrate 102 each pixel can be suitable for storing the ink of analog quantity.In the Application No. of introducing before is No.11/521,577 and No.11/536, the black matrix that can be used in the context of the invention and the illustrative embodiments in pixel inking hole have been described in 540 the application.
Brace table 104 can comprise that being suitable for transmitting substrate in Y-direction (entering or withdraw from the direction of the Figure 1A and the 1B page) passes through the one or more printheads that are arranged on the platform 104, and wherein platform 104 can distribute ink in the pixel inking hole of substrate 102.In colour filter was printed, typically solid color (for example, red, green or blue) was assigned in the pixel of the particular column on the substrate 102, and simultaneously different color assignment are in adjacent column.In this program, generally avoid blend of colors.At the U.S. Provisional Patent Application No.60/785 that introduces before, the brace table 104 in the inkjet printing program that can be used on the context of the invention and the various schemes of print head array have been described in 594.Brace table 104 can comprise by the hole of platform 104 whole thickness extensions, slit, window or the like (not shown), make substrate 102 can be exposed to the light that sends below brace table 104.
The optical detection device 108 that is suitable for measuring light transmittance can be set, to capture from the light of light source 106 through the pixel inking hole transmission of substrate 102.Optical detection device 108 can comprise the charge-coupled device (CCD) camera.Can be used for the CCD camera that is fit to of the context of the invention, for example can comprise 7 μ m pixel sizes or littler, 2000 pixel counts or more, and 0.1% luminance accuracy and 1 * 1 lens.Can use other size and parameter.Optical detection device 108 can be installed to support or in ink-jet print system on other device (not shown) above the brace table 104.The light transmittance that is appreciated that the light quantity of capturing from the specific pixel that is positioned on the substrate 102 and location of pixels is proportional, and is inversely proportional to the ink thickness (or amount) in this position by this location of pixels institute capture light transmission.Use for example one or more motor (not shown) optical detection devices 108 removable at X and Y direction.
Figure 1B is the schematic block diagrams according to another embodiment of inkjet-printing nozzle calibration system 200 provided by the present invention.In the embodiment shown in Figure 1B, as the embodiment of Figure 1A, the substrate 202 that comprises pixel inking hole is arranged on Y direction movably on the brace table 204.Yet in this embodiment, reflecting surface 205 (for example, mirror) is arranged between substrate 202 and the brace table 204.In some embodiments, the surface of platform 204 can be from reflection.In the embodiment of the described alternate embodiments of Figure 1B, light source 206 is arranged on below substrate 202 tops rather than the stayed surface.The light that sends from light source 206 is transferred to reflecting surface 205 by the pixel inking hole on the substrate 202.The light that incides reflecting surface 205 can pass through substrate 202 reflected backs, wherein can be captured by optical detection device 208 at this place's light.Image processor 210 is couple to optical detection device 208 with image data processing, and main frame 212 is couple to image processor 210.Each parts of system 200, it comprises substrate 202, brace table 204, light source 206, optical detection device 208, image processor 210 and main frame 210, can comprise with at above same or similar parts about the corresponding device that Figure 1A discussed.
Have following advantage in the inkjet nozzle calibration system 200 shown in Figure 1B: light source 206 can be provided with more neatly at level (X-Y) face and/or vertical (Z-direction of principal axis), and reason is that light directly is transferred to earlier on the substrate 202 rather than hole, slit or the window transmission of process in brace table 204.Similarly, can adopt multiple light source and can arranging more flexibly by this way.Yet, because the light that sends from light source 206 transmits twice through the pixel inking hole on substrate 202, once be through on the incident path of substrate 202 to the reflecting surface 205, and once be from the return path of reflecting surface 205 through substrate 202 reflected backs, light transmittance " data " amount of being captured by optical detection device 208 can double effectively.
In each embodiment described above, can measure in every way and/or calculate from light source 108,208 through the light transmittance of the pixel on substrate 102,202 to optical detection device 108,208.In one or more embodiments, can measure the light transmittance in each row pixel inking hole based on the average light transmittance of one or more typical units.For example, the light transmittance in each row can be the mean value of a plurality of (M) unit or display unit, and wherein M can be the numerical value of presetting and/or the user limits.
With reference to Fig. 2, this Fig. 2 is the vertical view that shows the embodiment of object on substrate, has indicated a plurality of pixels, wherein refers to the pixel columns of particular color and the number of lines of pixels that the subscript on pixel logo refers to particular row in the subscript on the pixel logo.Can be used to light transmittance data computation average transmittance from the difference setting (row, column) of pixel.Can set up data set for each color redness (R), green (G) and blue (B).The embodiment of the light transmittance values data set of different size unit can comprise:
For M=1:1R
1=R
1 01R
2=R
2 01R
3=R
3 0
For M=3:1R
1=(R
1 0+ R
1 + 3+ R
1 -3); 1R
2=(R
2 0+ R
2 + 3+ R
2 -3); 1R
3=
(R
3 0+R
3 +3+R
3 -3)；……
For M=5:1R
1=(R
1 0+ R
1 + 3+ R
1 -3+ R
1 + 6+ R
1 -6); 1R
2=(R
2 0+ R
2 + 3
+R
2 -3+R
2 +6+R
2 -6)；1R
3＝(R
3 0+R
3 +3+R
3 -3+R
3 +6+
R
3 -6)；……
Second group data set can comprise:
For M=1:2R
1=R
1 + 12R
2=R
2 + 1
For M=3:2R
1=R
1 + 1+ R
1 + 4+ R
1 -2
For M=5:2R
1=R
1 + 1+ R
1 + 4+ R
1 -2+ R
1 + 7+ R
1 -5
The 3rd group data set can comprise:
For M=1:3R
1=R
1 + 2
For M=3:3R
1=R
1 + 2+ R
1 + 5+ R
1 -1
For M=5:3R
1=R
1 + 1+ R
1 + 5+ R
1 -1+ R
1 + 8+ R
1 -4
Therefore, for the particular value of M, the data of each color can be consisted of four data sets:
-for the color original whole set of data of R for example;
-comprise 1R1,1R2,1R3 ... the data set of 1R;
-comprise 2R1,2R2,2R3 ... the data set of 2R;
-comprise 3R1,3R2,3R3 ... the data set of 3R;
Wherein, 1R, 2R, 3R ... as above calculate and classify based on the light transmittance that reduces gradually.
Fig. 3 is the vertical view that the embodiment of the demonstration object on the substrate 302 of independent display unit 304 is shown.In certain embodiments, the width of display unit 304 can change from about 80 μ m to about 250 μ m and have from about 200 μ m to about 600 mu m ranges in length.20 μ m can be had an appointment to the width of about 40 μ m in the dark space.Can use other size.Comprise the grid that is stacked on the display unit 304, to be used to represent independent " data pixels " of display unit 304 in the image file that is illustrated in display unit.
Fig. 4 is the flow chart of the illustrative embodiments of the method 400 of the light transmittance by determining independent display unit and the calibrating inkjet printing nozzle of adjusting the nozzle parameter according to the present invention.Reference numeral in the following discussion is from Fig. 1.Yet be appreciated that the program of being discussed is equally applicable to the calibration system described in Fig. 2.
In step 402, determine the center of display unit 304.In some embodiments, can determine the center of display unit 304 by the center of finding out two dark limbs of display unit on X and Y direction.Then, in step 404,, limit zone to be measured based on the quantity (N) of the data pixels of extending from the center of display unit 304 from the center of display unit.For example, be 1 if select N, zone to be measured can comprise a data pixel; If N=2, zone to be measured can comprise nine data pixels lining up rectangle; If N=3, zone to be measured can comprise 25 data pixels or the like.Can be on display unit 304 on average from the light transmittance data of each data pixels.In specific embodiment shown in Figure 3, N=2 and in display unit in the heart nine shadow data pixels represent zone to be measured, and subsequently to it on average to obtain the light transmittance of display unit 304.Can use other method of the data acquisition system of selecting to be measured and mean pixel.
In step 406, measure light transmittance by data pixels.This measurement can comprise calculates institute's photometry intensity of ink and substrate 102 that process is distributed and the ratio that only passes through institute's photometry intensity of substrate 102.Because only can change based on position of camera through the light quantity of substrate 102, only comprise through the baseline light transmittance data of the luminous intensity measurement of the determining positions of substrate can be before illustrative methods 400 beginnings original stored.In some embodiments, base-line data can comprise that the process that depends on the position has or do not have the luminous intensity measurement of the substrate 102 of black matrix.In another embodiment, baseline can only be stored the direct measurement of the intensity that does not exist under the substrate 302.Therefore, in these embodiments, the light transmittance of measurement data pixel comprises the ratio of the luminous intensity of being surveyed of calculating process is distributed ink and substrate 302 and the direct sunshine intensity of being surveyed.
Measurement in step 406 can be carried out automatically and very rapidly carry out.In some embodiments, the brace table 104 of ink-jet print system can move to the position of capturing from the light of selected display unit 304 with substrate 102 and/or optical detection device 108.The order of measuring can be sent by main frame 112.Data pixels in display unit 304 is collected light intensity data.In step 408,, can calculate and the ratio of average transmission light intensity and baseline (perhaps direct) intensity for the selected data pixel of display unit 304.In step 410, can store ratio data at file and/or in different files corresponding to the different colours ink.By along length (for example, 7 * 2000 μ m) the mobile optical sensitive detection parts 108 of substrate 102 and/or by moving substrate 102,, can repeat this measuring process for more display unit on the substrate; The new data that may receive can append in the existing file.After finishing measurement, comprise that the file of average transmittance data can be sent to main frame (for example, the information server of ink-jet print system or controller).In step 412, the addressable quantity of ink of file that comprises the light transmittance data to determine in display unit 304, to be distributed.In step 414, the quantity of ink in display unit 304 may be relevant with the specific nozzle of distributing ink.
In step 416, can determine by the difference between the size of quantity of ink (volume) that is distributed in the determined display unit 304 of light transmittance data and desired amount.In step 418, can adjust the initial pulse parameter P of nozzle based on determined difference
Fp(for example, V
Fp, E
Fp, I
FpDeng), so that be assigned to quantity of ink in the display unit 304 near the size of desired amount by nozzle.Alternatively, can determine that in step 416 quantity of ink that distributed is whether outside desired quantity of ink scope in display unit 304.If, in 418 can based on determined distribution quantity of ink surpass desired scope what and adjust the initial pulse parameter of nozzle, if not, then can not adjust.
In some embodiments, but the specific display unit of manual measurement.The image of being captured by optical detection device 108 may be displayed on, for example on the image processor 110.The user can select the light transmittance of Position Approximate and selected position to may be displayed in the function of position on X or the Y direction.The user can amplify specific display unit to obtain more detailed information.
Aforesaid specification only discloses specific implementations of the present invention, and the modification that falls within the scope of the present invention of above disclosed method and apparatus is conspicuous to those skilled in the art.For example, though whether method described above adopts measured light transmittance (intensity) to distribute the index of quantity of ink as determining, also may use measured frequency light transmittance to mix in one or more pixel inkings hole to make similar ink definite and/or that bond strength is measured to determine different colours.In addition, the present invention can also be applied as introns formation, polarizer coating and the formation of nano particle electric current.
Therefore, though the present invention is open in conjunction with its specific embodiment, should be appreciated that other embodiment can fall in the spirit and scope of the present invention, scope of the present invention is limited by following claims.
Claims (27)
1. the method for a calibrating inkjet printing nozzle comprises:
Ink is assigned on the substrate with inkjet-printing nozzle, and described nozzle is arranged on initial pulse parameter;
The light transmittance characteristic of ink that measurement distributes;
Determine based on measured light transmittance characteristic distribute the amount of ink; And
Based on the difference between determined amount of distributing ink and the desired quantity of ink size and adjust the initial pulse parameter of inkjet-printing nozzle.
2. method according to claim 1 is characterized in that, described initial pulse parameter comprise initial pulse voltage, initial pulse width, initial pulse electric current, initial pulse energy, initial pulse frequency, initial pulse waveform at least one of them.
3. method according to claim 1 is characterized in that, also comprises:
Illumination is assigned to the described ink on the described substrate below described substrate; And
Capture the transmitted light that passes through described substrate and above the described substrate of process on the directapath, distribute ink.
4. method according to claim 1 is characterized in that, also comprises:
Be assigned to described ink on the described substrate from the illumination of described substrate top; And
Be trapped in the light that above the described substrate of process on the reflection path, distributes the ink transmission on the incident path through distribute of ink transmission then.
5. method according to claim 1 is characterized in that, also comprises:
Before distributing ink on the described substrate:
Illumination do not exist distribute the described substrate of ink;
Capture light through described substrate transmission; And
Determine baseline light intensity levels from institute's capture light.
6. method according to claim 5 is characterized in that, described measure light transmittance characteristic that institute distributes ink comprise measurement pass through distribute the light intensity of capturing of ink transmission.
7. method according to claim 6 is characterized in that, also comprises:
Determine the measured intensity of institute's capture light and the ratio between the described baseline light intensity levels.
8. method according to claim 7 is characterized in that, described definite quantity of ink that distributes comprises the amount of confirming ink, wherein said quantity of ink corresponding to capture light the intensity of surveying and other described ratio of described baseline light intensity level.
9. method according to claim 8 is characterized in that, also comprises:
Determine distribute the described amount of ink and the difference between the desired amount size.
10. method according to claim 9 is characterized in that, adjusts described initial pulse parameter and comprises that the described initial pulse parameter of modification is so that described inkjet-printing nozzle distributes the size of desired amount.
11. method according to claim 10 is characterized in that, for the described modification of the described initial pulse parameter described amount nonlinear change according to ink distribution.
12. method according to claim 10 is characterized in that, described ink is assigned in the display unit inking hole.
13. method according to claim 10 is characterized in that, described display unit inking hole comprises transmission and captures a plurality of zones of light.
14. method according to claim 13 is characterized in that, also comprises:
On average from the light intensity of capturing in described a plurality of zones in described display unit inking hole.
15. an inkjet-printing nozzle calibration system comprises:
Be suitable for responding initial pulse ink is assigned to inkjet-printing nozzle on the substrate, described initial pulse comprises initial pulse parameter;
The light source of the ink that distributes on described substrate is suitable for throwing light on;
Be suitable for measuring imaging system through distribute of the light transmittance of ink; And
Be connected to described imaging system and described inkjet-printing nozzle and be suitable for adjusting the controller of described initial pulse parameter controlledly based on the light transmittance of being surveyed.
16. inkjet-printing nozzle calibration system according to claim 15, it is characterized in that, described initial pulse parameter comprise initial pulse voltage, initial pulse width, initial pulse electric current, initial pulse energy, initial pulse frequency, initial pulse waveform at least one of them.
17. inkjet-printing nozzle calibration system according to claim 15 is characterized in that, described imaging system comprise be suitable for capturing through distribution ink transmitted light the optical detection device and be connected to the image processor of described optical probe device.
18. inkjet-printing nozzle calibration system according to claim 17 is characterized in that, described optical detection device comprises charge-coupled device camera.
19. inkjet-printing nozzle calibration system according to claim 18 is characterized in that, described light source be arranged on described substrate below and be suitable for through described substrate with light transmission in the ink that is distributed.
20. inkjet-printing nozzle calibration system according to claim 18 is characterized in that described light source is arranged on the top of described substrate, and removable about described substrate.
21. inkjet-printing nozzle calibration system according to claim 20 is characterized in that, also comprises:
Reflecting surface, it is arranged on below the described substrate and is suitable for and will passes through the described substrate of light reflected back process of described substrate transmission from described light source towards described optical detection device.
22. inkjet-printing nozzle calibration system according to claim 17 is characterized in that, based on the light transmittance of being surveyed through distribute of ink, described controller is suitable for definite amount of distributing ink.
23. inkjet-printing nozzle calibration system according to claim 22 is characterized in that, described controller is suitable for definite the distribute described amount of ink and the difference between the desired amount size.
24. inkjet-printing nozzle calibration system according to claim 23, it is characterized in that, described controller is suitable for the adjustment signal is transferred to described inkjet-printing nozzle, and described signal adjusts described initial pulse parameter so that described nozzle distributes the quantity of ink near the size of desired amount.
25. inkjet-printing nozzle calibration system according to claim 15 is characterized in that described light source sends white light.
26. inkjet-printing nozzle calibration system according to claim 17 is characterized in that, described substrate comprise be used to store distribute one or more pixel inkings hole of ink.
27. inkjet-printing nozzle calibration system according to claim 17 is characterized in that, described image processor is suitable for calculating the average of the measured light transmittance on a plurality of zones in described one or more pixel inkings hole.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US80416606P | 2006-06-07 | 2006-06-07 | |
| US60/804,166 | 2006-06-07 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101085570A true CN101085570A (en) | 2007-12-12 |
| CN101085570B CN101085570B (en) | 2010-06-02 |
Family
ID=38936817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101104633A Expired - Fee Related CN101085570B (en) | 2006-06-07 | 2007-06-05 | Systems and methods for calibrating inkjet print head nozzles using light transmittance measured through deposited ink |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2008018423A (en) |
| KR (1) | KR100882038B1 (en) |
| CN (1) | CN101085570B (en) |
| TW (1) | TWI321102B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102202899A (en) * | 2008-09-05 | 2011-09-28 | 富士胶卷迪马蒂克斯股份有限公司 | Jet performance |
| CN102234455A (en) * | 2010-04-21 | 2011-11-09 | 株式会社东芝 | Aqueous inkjet ink and inkjet print method |
| CN108885183A (en) * | 2016-04-29 | 2018-11-23 | 惠普发展公司，有限责任合伙企业 | drop detector |
| CN109109461A (en) * | 2017-06-23 | 2019-01-01 | 灿美工程股份有限公司 | Fluid distribution equipment and its method of inspection |
| CN111216466A (en) * | 2018-11-23 | 2020-06-02 | 广东聚华印刷显示技术有限公司 | Method and device for ink-jet printing and computer equipment |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100072503A (en) | 2008-12-22 | 2010-07-01 | 엘지디스플레이 주식회사 | Ink-jet apparatus and the printing method |
| WO2012053674A1 (en) * | 2010-10-20 | 2012-04-26 | 주식회사 씨드 | Three-dimensional photocurable inkjet printing system |
| KR101781500B1 (en) | 2010-10-29 | 2017-09-26 | 삼성디스플레이 주식회사 | Method for inkjet printing |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002292890A (en) * | 2001-03-30 | 2002-10-09 | Brother Ind Ltd | Ink cartridge |
| JP4235643B2 (en) * | 1998-09-09 | 2009-03-11 | キヤノン株式会社 | Manufacturing method of color filter, and manufacturing method of liquid crystal element using color filter manufactured by the manufacturing method |
| JP2002086678A (en) * | 2000-09-12 | 2002-03-26 | Riso Kagaku Corp | Ink container |
| JP4200810B2 (en) * | 2002-05-17 | 2008-12-24 | セイコーエプソン株式会社 | Display manufacturing apparatus and display manufacturing method |
| JP4199982B2 (en) * | 2002-10-09 | 2008-12-24 | 株式会社日立産機システム | Inkjet recording device |
| JP2004170386A (en) * | 2002-10-28 | 2004-06-17 | Seiko Epson Corp | Device and method for inspection, device and method for liquid droplet ejection, device and electronic apparatus |
| JP2004253332A (en) * | 2003-02-21 | 2004-09-09 | Toshiba Corp | Substrate for coating, ink coating system, its coating method, and device manufacturing apparatus |
-
2007
- 2007-06-05 CN CN2007101104633A patent/CN101085570B/en not_active Expired - Fee Related
- 2007-06-05 TW TW096120192A patent/TWI321102B/en not_active IP Right Cessation
- 2007-06-05 JP JP2007148766A patent/JP2008018423A/en active Pending
- 2007-06-05 KR KR1020070054938A patent/KR100882038B1/en not_active IP Right Cessation
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102202899A (en) * | 2008-09-05 | 2011-09-28 | 富士胶卷迪马蒂克斯股份有限公司 | Jet performance |
| CN102202899B (en) * | 2008-09-05 | 2014-11-05 | 富士胶卷迪马蒂克斯股份有限公司 | System and method for jetting |
| CN102234455A (en) * | 2010-04-21 | 2011-11-09 | 株式会社东芝 | Aqueous inkjet ink and inkjet print method |
| CN102234455B (en) * | 2010-04-21 | 2013-12-11 | 株式会社东芝 | Aqueous inkjet ink and inkjet print method |
| CN108885183A (en) * | 2016-04-29 | 2018-11-23 | 惠普发展公司，有限责任合伙企业 | drop detector |
| CN109109461A (en) * | 2017-06-23 | 2019-01-01 | 灿美工程股份有限公司 | Fluid distribution equipment and its method of inspection |
| CN111216466A (en) * | 2018-11-23 | 2020-06-02 | 广东聚华印刷显示技术有限公司 | Method and device for ink-jet printing and computer equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2008018423A (en) | 2008-01-31 |
| KR20070117470A (en) | 2007-12-12 |
| CN101085570B (en) | 2010-06-02 |
| TW200806486A (en) | 2008-02-01 |
| TWI321102B (en) | 2010-03-01 |
| KR100882038B1 (en) | 2009-02-09 |
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