CN102267289B - Ink-jet device - Google Patents
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- CN102267289B CN102267289B CN201110128891.5A CN201110128891A CN102267289B CN 102267289 B CN102267289 B CN 102267289B CN 201110128891 A CN201110128891 A CN 201110128891A CN 102267289 B CN102267289 B CN 102267289B
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Abstract
The invention provides an ink-jet device capable of correctly detecting damaged nozzles and bad nozzles with poor inking precision under the condition that a substrate with a large area is coated with ink. A substrate (3) served as a printing medium and an injection inspection plate (6) are arranged at the same height. Then the correlation between the coating result of the substrate (3) and the coating result detected by the injection inspection plate (6) can be obtained. Therefore, the position deviation of the coating liquid drops is modified and the damaged nozzles are found out according to the coating result detected by the injection inspection plate (6) so as to improve the coating state of the substrate (3).
Description
Technical field
The present invention relates to possess the ink discharge device that the large-area substrates of the discharge inspection mechanism of shower nozzle is used.
Background technology
Ink-jet technology is applied to various technical fields, and it is used as the mode of printing while making it harden to manufacture the equipment of expectation by organic semiconducting materials or the liquefaction of electrode material China ink and after printing on substrate.
In addition,, in existing ink-jet technology, even in the situation that be provided for spraying the signal of black liquid to ink discharge device, according to the difference of the state of near black liquid nozzle or nozzle surface, also exist phenomenon that black liquid does not spray to produce the situation of the state of not spraying.For example, the heading into of the obstruction that foreign matter causes in the obstruction of nozzle interior, because of black liquid cohesion, bubble (state that bubble enters nozzle interior) etc.And, in the situation that the easy universe of black liquid solvent is dry, because near black liquid nozzle becomes full-bodied state, thereby there is the situation about not spraying that produces.
Due to this reason, the situation because generation nozzle does not spray, does not just apply if do not detect nozzle before coating, produces coating defect.Consequently, easily the characteristic of the equipment of manufacturing is brought to great harmful effect.
Based on this background, proposed to possess the ink discharge device of the discharge inspection mechanism that the state of the black liquid from nozzle ejection is detected in the past.For example, possess ejection is checked with substrate-placing to the step of substrate transport platform, to the step of print inspection pattern on this substrate, by detecting this substrate, can hold the state that the shower nozzle being possessed by ink discharge device sprays black liquid.
Yet, in the situation that maximize to number meter Cheng Du and will make matingly with this shower nozzle of ink discharge device maximize in one side of substrate, there is the inadequate situation of above-mentioned scheme in the past.Particularly, according to above-mentioned scheme in the past, in order to evaluate shower nozzle integral body, ejection inspection is also maximized with substrate, thereby checks that the inspection unit of this substrate also must be maximized.For this large-area substrates ink discharge device, there are the following problems, that is, not only need the large area equating with actual substrate to spray inspection substrate, but also can cause spraying audit function, maximizes.
In order to address the above problem, the ink discharge device that patent documentation 1 is recorded has for example been proposed, as shown in Figure 6, it comprises: carry the conveyer belt 20 of printed medium P, by nozzle to the shower nozzle 21 of printed medium P coating drop, be formed at peristome 22 on conveyer belt 20, utilize and by this peristome 22, from the drop of the nozzle ejection of shower nozzle 21, carry out the ejection inspection part 23 of lettering.
The ink discharge device of recording according to above-mentioned patent documentation 1, can not used printed medium P and apply drop in inspection part 23 and form inspections pattern in ejection, thus according to this inspection the ejection state with the nozzle of pattern confirmation shower nozzle 21.
[patent documentation 1] TOHKEMY 2006-76135 communique
Yet, in the structure of above-mentioned ink discharge device in the past, when if printed medium P is the material of the such thin and light weight of paper or film, conveyer belt 20 is not required to rigidity, but in the situation that printed medium P is glass substrate, if and during the size that is several meters of one side of glass substrate, for the weight of supporting glass substrate, the rigidity that conveying mechanism is had relatively high expectations.
Therefore, need increase the thickness of the transport platform of loading glass substrate or flank is set.Consequently, even peristome is set at conveying mechanism, because the thickness of conveying mechanism integral body is large, so the interval of shower nozzle 21 and ejection inspection part 23 becomes large.Thus, the interval of shower nozzle 21 and printed medium P becomes significantly different from the interval of shower nozzle 21 and ejection inspection part 23.Therefore, generation cannot obtain the coating result and this defective situation of correlation that sprays the coating result in inspection part 23 on printed medium P.
Summary of the invention
The present invention proposes in order to solve above-mentioned problem in the past, even if its object is to provide a kind of ink discharge device that also can correctly detect bad bad nozzle of not jetting nozzle and inking precision etc. while applying black liquid on large-area substrates.
In order to reach above-mentioned purpose, ink discharge device of the present invention applies the ink discharge device of black liquid for spray black liquid from nozzle at printed medium, it is characterized in that possessing: be provided with a plurality of described nozzles shower nozzle, make conveying mechanism that described shower nozzle relatively moves from described printed medium, by be configured in the roughly the same height of described printed medium on the plate conveying mechanism carried to the different direction of the throughput direction with described printed medium along described shower nozzle with plate of ejection inspection, the inspection unit checking with the black liquid pattern on plate being ejected into described ejection inspection.
According to this structure, by to be configured in printed medium equal height on ejection inspection with print inspection on plate, with pattern and to being printed onto the black liquid pattern of each nozzle on this plate, check, thereby can hold from the ejection state of the black liquid of shower nozzle with the correctness equating when to printed medium actual print.
Invention effect
As mentioned above, ink discharge device of the present invention, when using plate print inspection to use pattern to ejection inspection, makes shower nozzle and ejection inspection become identical state with the interval of plate and the interval of shower nozzle and printed medium, checks this ejection inspection plate.Thus, can improve coating result on printed medium check with ejection for the correlation of the coating result on plate, consequently, can paying attention from the ejection state of the black liquid of shower nozzle.
Accompanying drawing explanation
Fig. 1 means the figure of brief configuration of the embodiment of ink discharge device of the present invention, (a) is top view, is (b) front view.
Fig. 2 means the top view of the shower nozzle of embodiments of the present invention.
Fig. 3 is the key diagram of plate printing process for the ejection inspection of embodiments of the present invention.
Fig. 4 means the top view of plate for ejection inspection after the printing of embodiments of the present invention.
Fig. 5 means the figure of brief configuration of the ink discharge device of embodiments of the present invention, (a) is top view, and the front view while being (b) substrate printing (c) is front view when ejection inspection is printed with plate.
Fig. 6 means the stereogram of the existing ink discharge device that patent documentation 1 is recorded.
[symbol description]
1 pedestal
2 substrate transport platform
3 substrates
4,21 shower nozzles
5 ejection inspections are used plate conveying workbench
6 ejection inspection plates
Ejection inspection plate after 6 ' printing
7 inspection units
8 ejection control modules
9 single spraying heads
10, A～E, F nozzle
11 check pattern
The specific embodiment
Below, with reference to the accompanying drawings of embodiments of the present invention.
Fig. 1 means the figure of brief configuration of the embodiment of ink discharge device of the present invention, and this figure (a) is top view, (b) is front view.
In Fig. 1,1 is the pedestal of ink discharge device body, 2 is the substrate transport platform of conveying substrate 3 (printed medium), 4 for being provided with the shower nozzle of a plurality of nozzles, 5 for carrying ejection to check the ejection inspection plate conveying workbench with plate 6,7 for checking the inspection unit of check pattern (black liquid pattern), and 8 is the ejection amending unit that the ejection state of shower nozzle 4 is revised and/or controlled.
In the present embodiment, as shown in Figure 1, be provided with substrate transport platform 2 on pedestal 1, in substrate transport platform 2, absorption (fixing) has substrate 3.Near the central authorities of pedestal 1, be provided with shower nozzle 4, the lower surface that shower nozzle 4 is fixed on respect to the upper surface of substrate 3 and shower nozzle 4 has on the height of certain interval.
As shown in Figure 1, substrate transport platform 2 can move along left and right directions with respect to paper.Ink discharge device of the present invention is synchronizeed with the position of substrate transport platform 2, by applying black liquid by the black liquid of shower nozzle 4 ejection to the position of the expectation on substrate 3.
Ink discharge device of the present invention is provided with ejection and checks with plate conveying workbench 5 below shower nozzle 4.Ejection checks and with plate conveying workbench 5, from top, to be supported and to moving with the direction of substrate transport platform 2 quadratures.
The ejection inspection that is printed with check pattern with plate 6 adopt on its surface, be applied with to black liquid have water proofing property coating plate or at the plate of the surface-coated absorber that has black liquid etc.Ejection checks that with plate 6, being adsorbed (fix) checks with on plate conveying workbench 5 in ejection, and is adjusted to and when printing, sprays inspection and become equal height with the surface of plate 6 and the surface of substrate 3.
When carrying out black liquid coating on substrate 3 (during printing), conventionally, ejection checks with plate conveying workbench 5 with (the represented inspection position of solid line in Fig. 1, the position of Fig. 1 (1)) standby in the outside of pedestal 1 with the hands-off mode of substrate transport platform 2.In addition, when the ejection state to shower nozzle 4 is confirmed, (the represented position of solid line in Fig. 1, position on the left of substrate transport platform 2 stops at, the position of Fig. 1 (2)), under state, ejection inspection moves to the position shown in two point dotted line (position of Fig. 1 (3)) with plate conveying workbench 5.Synchronize with the position of plate conveying workbench 5 with ejection inspection, by from the black liquid of shower nozzle 4 ejection, ejection is checked to the surface printing check pattern with plate 6 with the ejection inspection on plate conveying workbench 5.
Ejection checks with plate conveying workbench 5 and arrives behind the represented position (position of Fig. 1 (3)) of two point dotted line, turns back to the inspection position shown in the solid line in Fig. 1 ((position of Fig. 1 (1))).Under this state, by inspection unit 7, start ejection inspection to check with the ejection state of the check pattern on plate 6.As inspection unit 7, can adopt the inspection unit of the laser scan type of the inspection unit that uses identification camera to carry out image recognition or barcode reader and so on.
The ejection that can carry out check pattern by inspection unit 7 checks, can hold thus not the spraying or the position deviation amount of coated drop of each nozzle of shower nozzle 4.Then, its result is input to the ejection control module 8 of shower nozzle 4, thereby the ejection state of each nozzle of shower nozzle 4 is revised.
For example, make not jetting nozzle and the large nozzle of position deviation not spray black liquid, and be alternative in this, make adjacent nozzle spray black liquid, jetting nozzle is not supplemented.In addition, for the coating position deviation of the throughput direction of substrate 3, black liquid ejection that can be by this nozzle that staggers time be engraved in expectation position coating drop revise.
As mentioned above, according to the ink discharge device of present embodiment, can substrate 3 and ejection inspection be configured on equal height with plate 6 with respect to shower nozzle 4, thereby coating result and the ejection that can improve on substrate 3 check by the correlation between the coating result on plate 6.Thus, according to ejection, check the coating result by the check pattern on plate 6, by the coating position deviation of drop and the not ejection state of nozzle are revised, can improve the actual coating state to coating on substrate 3.
Ejection checks that with plate 6, need to ejection to be checked by the distance of plate 6 and shower nozzle 4 when the printing identical with the distance of substrate 3 and shower nozzle 4, still, when ejection inspection is checked with plate 6, during standby, during conveying etc., can be highly to move arbitrarily.For example, in order shortening, to check beat when checking, need under claimed accuracy condition, large print range to be checked can guarantee as far as possible.Now, the start of the camera of inspection unit 7 distance is more than tens of millimeters.In the situation that arranging highly of inspection unit 7 is restricted, by making ejection inspection move and check along short transverse with plate 6, can make the whole space of saving of ink discharge device.In addition, when standby, while carrying, similarly, having the free degree aspect the configuration relation of the shower nozzle supporting station (not shown) of supporting shower nozzle 4 etc., can make Whole Equipment save space.And, can improve the workability that ejection inspection is used the replacing operation of plate 6, maintenance etc.
In addition, because being configured to, the ink discharge device of present embodiment ejection is checked with plate 6 limits, to the direction of the throughput direction quadrature with substrate 3, move limit to apply, so can shorten the length that ejection inspection is used plate 6 with respect to the length direction of shower nozzle 4.Therefore, can adopt ejection inspection for the plate 6 less than substrate 3.Owing to can reducing ejection, check with plate 6, so can realize ejection, check the miniaturization with plate conveying workbench 5 and inspection unit 7, thereby can suppress the maximization of ink discharge device itself.And, due to can be with the little plate 6 for ejection inspection of high-speed mobile, thus not only can shorten the printing time for checking, but also because inspection area is little and can shorten the review time, thereby boost productivity.
Fig. 2 shows the structure of the shower nozzle of present embodiment.This figure is the top view of shower nozzle.In the such large-scale shower nozzle 4 using in the present embodiment, conventionally, 9 arrangement regularly of a plurality of single sprayings.Single spraying 9 has respectively hundreds of nozzles 10, in the figure for the purpose of simplifying the description, only enumerates adjacent nozzle 10 and describes.Can utilize ejection control module 8 constantly from these all nozzles 1, spraying drop arbitrarily.
In order to realize accurate printing, need to improve the resolution ratio of coating.The coating resolution ratio of the throughput direction of substrate 3 is determined by the transporting velocity of substrate 3 and the ejection cycle that sprays black liquid from nozzle 10.Which kind of in addition, to degree, determine by the configuration of nozzle 10 is close with the coating resolution ratio of the direction of the throughput direction quadrature of substrate 3.
Conventionally, in order black liquid chamber to be set according to each nozzle 10, to be used to black liquid chamber that the driving element of ejection pressure is provided, the size in the hole of nozzle 10 is 20～50 microns of left and right of diameter.Therefore, the spacing of 10, nozzle is hundreds of microns.In order to ensure the resolution ratio of the coating in the direction of the throughput direction quadrature with substrate 3, with respect to the throughput direction of substrate 3, configure obliquely single spraying 9.Thus, even if depart from the throughput direction of substrate 3 position of nozzle 10, also can make nozzle bore spacing P1 in the direction with the throughput direction quadrature of substrate 3, with the direction of the throughput direction quadrature of substrate 3 on coating resolution ratio become the tens of microns with nozzle bore equal diameters.
For the shower nozzle 4 of configuration like this, printed medium is larger, more increases with the width in the direction of the throughput direction quadrature of substrate 3.Therefore,, even in the situation that carry ejection inspection to spray inspection with plate 6 along the throughput direction of substrate 3, also need large ejection inspection use plate 6 and inspection unit 7.
In addition, due to the width of the throughput direction of the substrate 3 of shower nozzle 4 in the situation that become large as the substrate 3 of printed medium and also do not change, so can use the plate 6 for ejection inspection equating with the width of shower nozzle 4.In addition, because the injector spacing P2 of the throughput direction of substrate 3 is larger than the injector spacing P1 of orthogonal direction, so have when ejection checks, can not be subject to adjacent nozzle 10 coating precision affect this advantage.
Fig. 3 is the key diagram of the printing process of plate for the ejection inspection of present embodiment.In the present embodiment, ejection check with plate 6 from the left side of the drawing of shower nozzle 4 to the right, edge is transferred with the direction of the throughput direction quadrature of substrate 3.Ejection timing is controlled in position while checking with plate 6 below by shower nozzle 4 according to ejection, thereby uses print inspection pattern 11 on plate 6 ejection inspection.
For example, in Fig. 3, utilize upper print inspection pattern the A '～F ' of plate 6 ' for the ejection inspection of nozzle A～F after printing.Nozzle A sprays the drop of several when ejection inspection is come the position of regulation with plate 6, thereby forms the pattern A ' of wire.Situation about checking with drop with one is compared, and forms the pattern of wire by the drop with several, can realize the inspection of the repeatability that comprises ejection.In addition, for the situation of linear pattern, because the region that checks becomes large, so can select the test mode beyond the image inspection of laser scan type.In addition, owing to checking that sensitivity improves, so be not vulnerable to the impact that dust and foreign matter etc. check noise.
Nozzle A～E is the nozzle in identical single spraying 9, mode print inspection pattern the A '～E ' arranging in the same position of throughput direction with its each check pattern 11.Nozzle F is the nozzle of the single spraying head different from nozzle A～E, and it is nozzle identical with nozzle A position on the throughput direction of substrate 3.Ejection inspection after printing is printed with check pattern F ' with the left side of the check pattern A ' of plate 6 '.
Fig. 4 means the top view of an example of plate for ejection inspection after the printing of embodiment.In ejection, check with being printed with check pattern 11 on plate 6 '.Single-point dotted line is the expected value of coating position of the throughput direction of substrate 3.In the present embodiment, utilize to form that the shooting of inspection unit 7 is first-class to be checked check pattern 11, and by the having or not to judge and do not spray of check pattern 11, thereby the coating position deviation with respect to expected value is measured.
For example, in the example shown in Fig. 4, check pattern A ', B ', E ' are coated in the situation that there is hardly coating position deviation.In addition, check pattern C ' location deviation on substrate throughput direction.Therefore, the position deviation amount with respect to expected value is checked, and according to the amount of its position deviation so that the mode that the ejection timing of nozzle C prints in advance revise.In addition, check pattern D ' is location deviation on the rightabout of substrate throughput direction, by making the ejection timing of nozzle D postpone to revise.
Furthermore, in the situation that as check pattern F ' the original pattern disappearance that should print, mean that its nozzle is for jetting nozzle not.If learn, nozzle F is for jetting nozzle not, by adjacent nozzle substituted printing etc., thus the printed patterns that supplementary copy should be printed by nozzle F.
If use ejection inspection and the modification method of present embodiment described above, because substrate 3 and ejection check with plate 6, be configured on identical height and can obtain the coating result and the correlation of ejection inspection between the coating result on plate 6 on substrate 3, so check by the coating result on plate 6 according to ejection, the coating position deviation of drop and the state that do not spray of nozzle can be revised, thereby the actual coating state to coating on substrate 3 can be improved.
In addition, in the present embodiment, by the different conveying limit, direction limit of the throughput direction from substrate 3, be configured in the print inspection pattern on plate 6 for ejection inspection on the height identical with the substrate 3 of actual print object, thereby with plate 6, checking the ejection state of shower nozzle 4 by the ejection inspection with less than substrate 3.
And, in the present embodiment, as conveying mechanism although understand the example make the substrate transport platform 2 that substrate 3 moves, as long as but apply owing to substrate 3 and shower nozzle 4 being relatively moved carry out black liquid, so also can consider conveying mechanism that shower nozzle 4 is moved with respect to substrate 3.
Next, with reference to the accompanying drawings of other embodiments.
Fig. 5 means the figure of brief configuration of the second embodiment of ink discharge device of the present invention, (a) is top view, and the front view while (b) printing for substrate (c) is the front view while printing with plate to ejection inspection.
In Fig. 5,101,103 is air-flotation type workbench, and 102 is air-flotation type workbench movable part, and 104 is substrate grasping portion, and 105 is guiding piece.Air-flotation type workbench 101,103 and air-flotation type workbench movable part 102 attract hole to supply with respectively, attract air from being formed at trickle air supply hole and the air on workbench surface.Utilize the balance of air supply and attraction, substrate 3 is keeping and the gap of worktable upper surface state float downward uniformly roughly.In addition, substrate 3 is controlled end by substrate grasping portion 104, thereby realizes the restriction of horizontal direction.Air-flotation type workbench movable part 102 be configured in shower nozzle 4 under, can move along the vertical direction.
As shown in Fig. 5 (b), when substrate 3 is printed, air-flotation type workbench movable part 102 is positioned at the height equating with air-flotation type workbench 101,103, and substrate grasping portion 103 moves under the state of controlling substrate 3 on guiding piece 105.Substrate 3 is transferred with the state floating on air-flotation type workbench 101, air-flotation type workbench movable part 102, air-flotation type workbench 103.When substrate 3 passes through shower nozzle 4 below, black liquid is from shower nozzle 4 ejections, thus the printed patterns that printing is expected on substrate 3.
When checking in ejection when printing on plate 6, as shown in Fig. 5 (c), 102 declines of air-flotation type workbench movable part.Being equipped with ejection inspection moves along the directions vertical with paper with plate conveying workbench 5 with the ejection inspection of plate 6.The level configurations one-tenth of ejection inspection use plate 6 is identical with the height of the substrate 3 as actual print object.When ejection inspection uses plate 6 to pass through the below of shower nozzle 4, in ejection, check with print inspection pattern on plate 6.Due to the inspection method of check pattern, coating position deviation, correction, the compensation process of jetting nozzle are not identical with the first embodiment, so description thereof is omitted.
Above, if use the ink discharge device of present embodiment, due to by the air-flotation type workbench of applying in a flexible way without lay guiding piece etc. on workbench, so can make a part for workbench leave and move up and down.Thus, can easily guarantee that ejection checks with plate conveying workbench 5 to the transport path under shower nozzle 4.
[utilizability in industry]
The manufacturing installation of the functional element that ink discharge device of the present invention can be made as utilizing the functional black liquid of ink-jet coating.For example,, as the applying device of the filter of field of display, fluorophor, organic semiconductor film etc.In addition, can also be used as the formation device of the electric wiring of electronic equipment.
Claims (2)
1. an ink discharge device, it possesses shower nozzle, the substrate transport platform of mounting printed medium that is provided with a plurality of nozzles and the pedestal that is provided with up described substrate transport platform, wherein,
Described ink discharge device has:
Ejection inspection plate, it can roughly move up and can have from the mounting of described pedestal the surf zone of described substrate transport platform to move to the outside of described pedestal in the side of quadrature at the throughput direction with described printed medium;
Ejection inspection is used plate conveying workbench, it is supported from top and to moving with the direction of described substrate transport platform quadrature, described ejection inspection is fixed on described ejection inspection with on plate conveying workbench with plate, and described in being adjusted to when printing, ejection inspection becomes equal height with the surface of plate and the surface of described printed medium;
Inspection unit, it checks with the black liquid pattern on plate being ejected into described ejection inspection,
Described ejection inspection with plate in described ejection inspection with under the distance of plate and the described shower nozzle state identical with the distance in the face of between the surface of the surface of described transport platform and the described shower nozzle side of described printed medium in described shower nozzle, the coated black liquid spraying from described shower nozzle.
2. ink discharge device according to claim 1, wherein,
Also have ejection control module, this ejection control module is revised the coating position deviation of drop or the not ejection state of shower nozzle according to the check result of described inspection unit.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010110236 | 2010-05-12 | ||
| JP2010-110236 | 2010-05-12 | ||
| JP2011-039779 | 2011-02-25 | ||
| JP2011039779A JP5062339B2 (en) | 2010-05-12 | 2011-02-25 | Inkjet device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102267289A CN102267289A (en) | 2011-12-07 |
| CN102267289B true CN102267289B (en) | 2014-05-07 |
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| CN201110128891.5A Active CN102267289B (en) | 2010-05-12 | 2011-05-11 | Ink-jet device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019207185A1 (en) * | 2019-05-16 | 2020-11-19 | Siemens Aktiengesellschaft | Printing device and method for printing an object |
| DE102019207158A1 (en) | 2019-05-16 | 2020-11-19 | Robert Bosch Gmbh | Method and device for controlling the braking behavior of an electric vehicle |
| JP2021181071A (en) * | 2020-05-20 | 2021-11-25 | 住友重機械工業株式会社 | Ink coating device, control device of the same, and inkjet head inspection method |
| JP2021183392A (en) * | 2020-05-21 | 2021-12-02 | パナソニックＩｐマネジメント株式会社 | Inkjet printing device and inkjet printing method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1314245A (en) * | 2000-03-21 | 2001-09-26 | 松下电器产业株式会社 | Ink jet recorder |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004098400A (en) * | 2002-09-06 | 2004-04-02 | Seiko Epson Corp | Liquid drop ejector, liquid drop ejecting method, process for manufacturing device, and electronic apparatus |
| JP4622401B2 (en) * | 2004-09-09 | 2011-02-02 | 富士ゼロックス株式会社 | Inkjet recording device |
| JP2007276390A (en) * | 2006-04-11 | 2007-10-25 | Konica Minolta Holdings Inc | Liquid ejector and ejection method |
| JP2009083349A (en) * | 2007-10-01 | 2009-04-23 | Brother Ind Ltd | Inkjet recorder |
| JP2009279531A (en) * | 2008-05-23 | 2009-12-03 | Seiko Epson Corp | Drawing inspection device, and drawing inspection method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1314245A (en) * | 2000-03-21 | 2001-09-26 | 松下电器产业株式会社 | Ink jet recorder |
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