TW200938305A - Coating apparatus and its ink filling method - Google Patents
Coating apparatus and its ink filling method Download PDFInfo
- Publication number
- TW200938305A TW200938305A TW098104004A TW98104004A TW200938305A TW 200938305 A TW200938305 A TW 200938305A TW 098104004 A TW098104004 A TW 098104004A TW 98104004 A TW98104004 A TW 98104004A TW 200938305 A TW200938305 A TW 200938305A
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- TW
- Taiwan
- Prior art keywords
- ink
- pressure
- low pressure
- applying
- nozzle
- Prior art date
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Classifications
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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
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
- B41J2/17503—Ink cartridges
- B41J2/17506—Refilling of the cartridge
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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
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
- B41J2/17596—Ink pumps, ink valves
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
- Ink Jet (AREA)
- Coating Apparatus (AREA)
- Optical Filters (AREA)
Abstract
Description
200938305 三、 英文發明摘要： 四、 指定代表圖： (一） 本案指定代表圖為：第（1 )圖。 (二） 本代表圖之元件符號簡單說明： 1 :喷墨頭 2 :頭控制基板 3 :墨水供給配管 4:主槽 〇 5 :墨水補充配管 6 :副槽 7A、7B:三通切換閥 8 :真空泵 9 :壓力空氣源 I 0 :供給電磁閥 II :補充電磁閥 ®五、本案若有化學式時，請揭示最能顯示發明特 徵的化學式： 六、發明說明： 【發明所屬之技術領域】 本發明是關於在採用喷墨（ink jet)方式的大型的塗佈 裝置（coating machine)中，利用對裝置的運轉率提高不可 或缺的喷墨方式之塗佈裝置及其墨水（ink)填充方法。 2 200938305 • 【先前技術】 採用噴墨方式的印字（print)或塗佈裝置是以營業用 或民生用的小型的印字裝置而發展，家庭用或營業用的印 字裝置當然已發展，應用於工業用的印染（printing)製 程，或者以大型的印字裝置廣泛地應用於大型的室外廣告 用的媒體。其中特別是最近作為液晶電視等的顯示器 (display)機器的關鍵裝置之彩色濾光片（c〇1〇r ^丨以犷） ❹的製造採用喷墨方式的裝置正被導入中。 對於彩色濾光片的生產’塗佈裝置被應用是當作如下 的裝置而被利用：於在薄的玻璃的表面形成被稱為[黑色矩 陣（black matrix)]的微細的格子狀的遮光部之彩色渡光 片基材，吐出墨水至藉由遮光部的格子形成的該微細的劃 分（像素（pixel))。 該彩色遽光片的大小因對應影像機器的大型化，作為 彩色濾光片的有效面積越來越大型化，故作為構件的彩色 ©濾光片會成為影像機器的價格上升的原因。另一方面，由 於激烈的影像機器的製品價格競爭的激烈化，製造成本的 降低被要求。滿足該要求且對塗佈襞置的要求也不僅止於 裝置的價格而已’對於在儘可能高速下的彩色濾光片的生 產且機械運轉率的提高等可有助於製造成本之高速性、穩 定性、可靠度（reliability)之要求也提高。 、 能響應這種要求的塗佈裝置，作為大型的彩色遽光片 的製造用途，"上述的市場的要求當然是一下子可塗佈 3 200938305 面積之大型的塗佈農置被要求。 方面，為了提高彩色濾光片等之藉 構件的生產性，需確保塗佈裝置的 實現該塗佈裝置的連續運轉的方 以吸濕材直接擦拭噴嘴（nozzle)尖 〇 以適當的頻率重複喷嘴尖端的清洗 的簡便的噴嘴的清洗方法中，由於 且使用頻率低的塗佈裝置中不會是 被使用的大型的裝置中因使用頻率 頻率也隨著變高’同時由於噴嘴的 擦掉的墨水量也成為相當多的量， 的吸濕材，其設置的佔有空間變大 實用性有問題，而且，也不成為可 造成的墨水的吐出不良的問題之方200938305 III. Abstracts of English Invention: IV. Designation of Representative Representatives: (1) The representative representative of the case is: (1). (2) A brief description of the components of the representative diagram: 1: Inkjet head 2: Head control board 3: Ink supply piping 4: Main tank 5: Ink refill piping 6: Sub tank 7A, 7B: Three-way switching valve 8 : Vacuum pump 9 : Pressure air source I 0 : Supply solenoid valve II : Supplemental solenoid valve ® 5. If there is a chemical formula in this case, please disclose the chemical formula that best shows the characteristics of the invention: 6. Invention description: [Technical field of invention] The present invention relates to a coating apparatus using an ink jet method which is indispensable for improving an operation rate of a device in a large-sized coating machine using an ink jet method, and an ink filling method thereof. . 2 200938305 • [Prior Art] The printing or coating device using the inkjet method is developed for small printing devices for business or people's livelihood, and the printing device for home use or business is of course developed for industrial use. The printing process used is widely used in large-scale outdoor advertising media with large printing devices. Among them, in particular, a color filter (c〇1〇r^丨丨) which is a key device of a display device such as a liquid crystal television is being introduced. For the production of color filters, the coating device is used as a device for forming a fine lattice-like light-shielding portion called a [black matrix] on the surface of a thin glass. The color light-emitting sheet substrate discharges the ink to the fine division (pixel) formed by the lattice of the light-shielding portion. The size of the color filter is increased as the size of the color filter increases, and the effective area of the color filter is increased. Therefore, the color of the filter is a factor in the increase in the price of the image device. On the other hand, due to the fierce competition in the price of products for intense video equipment, the reduction in manufacturing costs is required. This requirement is met and the requirements for the coating device are not only limited to the price of the device, but also contribute to the high speed of manufacturing cost for the production of color filters at the highest possible speed and the improvement of the mechanical operation rate. The requirements for stability and reliability are also increased. A coating device that can respond to such a request is used as a manufacturing method for a large-sized color calender. "The above-mentioned market requirements are of course a large-scale coated agricultural plant that is capable of coating 3 200938305 area. On the other hand, in order to improve the productivity of a member such as a color filter, it is necessary to ensure that the continuous operation of the coating device of the coating device is performed by directly wiping the nozzle with a moisture absorbing material and repeating the nozzle at an appropriate frequency. In the cleaning method of the simple nozzle for cleaning the tip, the coating device having a low frequency of use is not used in a large-sized device, and the frequency is also increased due to the frequency of use. The amount of the absorbent material is also a considerable amount, and the space occupied by the installation is problematic, and the practicality is problematic, and the problem of poor discharge of the ink is not caused.
大的塗佈 另一 而生產的 轉連續性 法以往有 的墨水， 在該習知 的小型的 在工業用 的清掃其 數目，故 該墨水量 佈裝置中 部的氣泡 由墨水的塗佈 墨水吐出的運 法’簡便的方 端’擦掉多餘 (cleaning)。 雖然在家庭用 大的問題，但 高’喷嘴尖端 總數為極大的 需要大量吸收 ，在大型的塗 應付因喷嘴内 法。 改善喷嘴内部的滯留的氣泡等的原因造成的來自噴嘴 的墨水的吐出不良的方法，在習知的塗佈裝置中有利用如 下的方法：在到吐出墨水的喷嘴之流道（fl〇w channel)具 備過；慮器（filter) ’在墨水通過過渡器的壓力以下進行墨 水的第一填充的程序，在通過過濾器的壓力以上進行第二 填充的程序，以填充墨水（專利文獻1 )。 依照專利文獻1的方法揭示：不會發生因印刷不良，亦 即墨水的填充不良而在接近墨水吐出部的孔口（ 〇r丨f i ce) 處殘留空氣，造成密閉不良，空氣混入墨水中，墨水的流 動被阻礙，墨水的吐出發生間歇之印刷不良。 4 200938305 而且，嘴墨記 * 的方法（專利文獻 字開始前或印字妹 第一印字動作，與 前述規定量多的第 字動作。 依照該專利文 水的固著’維持一 G動作，例如[吸弓丨] 可保持長時間的動 [專利文獻1 ] [專利文獻2 ] 錄裝置的恢復系統清掃方法有利用如下 2)等：根據判定基準切換執行至少在印 束後伴隨規定量的第—預備吐出動作之 至少在印字開始前或印字結束後伴隨比 二規定量的第二預備吐出動作之第二印 獻2的方法，揭示：可防止墨水流道之墨 般的正常的吐出可能的狀態用的特別的 、[預備吐出]等的動作被適宜地進行， 作及良好的印字。 曰本國特開2004- 1 14658號公報 曰本國特開2002-52740號公報 【發明内容】 依照專利文齡】 的流道内的方法士 氣等的混入於至喷嘴的墨水 ❹ 題，可期待穩定的：較小型的塗佈裝置中無實用上的問 期待作為注目如·^ 你号刃又馱z扪万凌中可 ^ m ^ ^， 的問題的對策之功效：墨水的固著或接 近固者的噴嘴吐出 人伐 ^ 出週邊的流動停滞。 在專利文獻1或專利文獻2的方法中，在營業 用塗佈装置等的 呂茶 叱出墨水的頭（head)的數目，亦即噴嘴數 多的塗佈装置中， 紙 任兵多數個頭的全部中排除附著於喰喈 附近的墨水積在虚& μ Έ ^ 處的壁面之氣泡仍不充分。因此有如下的 問題：用以由嗔嘴 出墨水的衝擊（i mpac t)(急遽的壓力上 5 200938305 -升)壓縮滞留的氣泡的部分係相當大的能量被吸收 •墨水的適當的吐出，進行噴嘴洗淨等需要檢查、調整等， 無法立即開始使用塗佈裝置。 —w登等 像發明者這樣再次針對在產業用等的 的塗佈裝置中，從生產開始來自全體喷嘴的適當的= 出為可能的墨水的填充方法進行檢討的結果，確認了如下· 在習知的喷墨方式的塗佈裝置被適用之利用單力 的施加於墨水供給配管進行的填充，例如以如下的條件將 〇墨水填充於墨水供給流道等之單一的填充操作中， 1) 、以15〜30kPa左右的供沾蔽士/ 右的低的壓力（以下記為低壓）填 充，或者 ' 2) 、以3〇~瞻…的中程度的壓力（以下記為中壓） 填充，或者 3) 、以80〜l50kPa左右的高的壓力（以下記為高壓 充， 在產業用喷墨等的需要非常多數的喷嘴的塗佈裝置中無 ©法實現充分地排㈣留於#給路#中的嘴嘴跟前的墨水積 存處等的氣泡。 本發明其目的為提供一種墨水的填充方法及其裝置， 可確實地排出這種滯留於墨水供給路徑中的喷嘴跟前的墨 水積存處等的氣泡。 本發明是鑒於上述的問題點所想出的一種具有噴墨頭 (inkjet head)的塗佈裝置及其墨水的填充方法，該具有喷 墨頭的塗佈裝置包含：施加負壓的負壓施加手段、施加低壓 200938305 •的低壓施加手段、施加高壓的高壓施加手段、控制手段； * 以及在至墨水槽（ink tank)的管路包含藉由前述控制手段 控制的複數個開關閥及切換閥，其中 墨水的填充程序是施加低壓至前述槽，並由前述槽經 由前述配管路填充墨水至喷嘴吐出尖端部後，施加至少一 次的高壓至該槽，接著， 正要印字時的程序是將施加壓力至槽由施加高壓切換 成施加低壓一次以上，在印字前藉由控制手段控制、執行 ❹各程序。 而且’設正要印字時的程序中的施加高壓與施加低壓 的壓力差為50kPa以上。 而且’設正要印字時的施加低壓的上限為3〇 kPa。 【發明的功效】 ❸ 依照本發明的具有喷墨頭的塗佈裝置的墨水填充方 法，墨水填充程序藉由施加低壓至前述槽，並由前述槽經 由配管路填充墨水至噴嘴吐出尖端部後，施加至少一次的 高壓至該槽，使存在於配管系統的管壁及/或接頭部的極少 的氣泡的確實的除去為可能，接著，正要印字時程序藉2 將施加壓力至槽由施加高壓切換成施加低壓一次以上，、 過最初的施加高壓使附著於頭喷嘴（head n〇zzi幻内及/ = 喷嘴内壁的極少氣泡被壓縮’藉由氣泡的體積收缩減少二 喷嘴内壁的接觸面肖’而且氣泡的形狀也接近球形盘 容易流動的狀態，藉由由高壓至低壓的壓力的急遽變動 200938305 力擺動（pressure Swing))’可確實地由噴嘴排出噴嘴内的 極少氣泡。 據此，到噴墨塗佈裝置的印字開始的準備，由墨水槽 到頭的配管耗墨水填充和配管流道與多㈣嘴全部的喷 嘴内的氣泡的排出動作可短時間地確實實&，塗佈裝置的 起動（start-up)的縮短化和可削減利用填充墨水之墨水的 必要以上的浪費，可最大限度地活用喷墨塗佈技術的優 點，可大大地貢獻於生產性的提高。 〇 【實施方式】 以下針對本發明的實施用的最佳的形態使用圖來說明。 圖1疋顯示在依照本發明的喷墨方式的塗佈裝置中，可 填充墨水至噴墨頭的系統的概念之系統構成圖，圖2是施加 壓力至主槽（main tank)4的壓力空氣源的系統主要部分之 方塊圖，圖3是前述系統的程序流程圖。形成有喷嘴（未圖 示）之喷墨頭1是藉由來自頭控制基板2的指令，使來自喷 〇墨頭1的喷嘴的墨水的吐出動作及停止等被控制。喷墨頭1 是經由墨水供給配管3與主槽4連結並被供給墨水。 至主槽4是經由墨水補充配管5與副槽（sub tank)6直 接連接並被補充墨水。 在主槽4 [由複數個二通切換閥（three way switching valve)7A、7B連接有[施加負壓的負壓施加手段]之真空系 (vacuum pump)8及壓力空氣源9。在墨水供給配管3與墨水 補充配管5配設有供給電磁閥1〇與補充電磁閥丨丨，藉由來 200938305 自裝置全體的系統控制手段（未圖示）的指令進行閥的開關 動作。圖2是顯示施加壓力至主槽4的壓力空氣源9的内部 之方塊圖’產生15〜30kPa左右的低壓的[施加低壓的低壓施 加手段]之低壓源9L，與產生80〜15OkPa左右的高壓的[施 加高壓的高壓施加手段]之高壓源9H的兩個壓力源透過壓 力調節器’適宜地藉由三通切換閥7C施加低壓與高壓至主 槽4。 以下針對本發明的墨水填充方法，一邊參照圖3的程 ❹序流程圖’一邊詳細敘述。 在開始的程序中’首先是由副槽6補充墨水至主槽4 的程序’由供給電磁閥1〇為[關]、補充電磁閥丨丨為[開] 的狀態起動真空泵8，藉由三通切換閥7A的操作使主槽成 負壓。藉由保持主槽4成負壓狀態使墨水由副槽6補充至 主槽4。在該流入量適量地達到後，令補充電磁閥η為 [關]’結束第一程序。 在第二程序中令供給電磁閥10為[開]，藉由三通切換 閥7C的操作由壓力空氣源9的低壓源9L透過壓力調節器將 15 30kPa左右的低壓施加至主槽4,將主槽4的墨水填充至 由供給配管3到噴墨頭丨的噴嘴之全配管部。 在第三程序中是完成第二程序並立即藉由三通切換閥 7A、、7C的操作由壓力空氣源9的高壓源9H透過壓力調 知器將80~150kPa左右的高壓施加至主槽4,並由全體喷嘴 確認了墨水的吐出後，令供給電磁閥10為[關]，藉由三通 切換閥7B的操作打開主槽至大氣。據此，#留於主槽*到 9 200938305 喷墨頭1的喷嘴的配管彎曲部及/或配管連接部等墨水供給 配管中’或者散佈於墨水中的微小的[氣泡]被由喷墨頭1 的喷嘴排出。 此外’第三程序重複實施也可以。 但是’在到該階段為止的填充方法中，在具有產業用的 多數個喷嘴的塗佈裝置中無法充分地排除滯留於所有的噴 嘴跟前，特別是頭内部的墨水積存處等的氣泡。因此，產生 了即使由該狀態給予規定的負壓，移到印字動作也不吐出墨 水的喷嘴。 以有限的時間有效活用裝置（=的運轉率的提高）對企業 或對裝置開發者而言為最重要的課題。為了確立破實地除去 這種附著、滞留於墨水供給路徑中的噴嘴跟前的墨水積存 處等的供給路徑中的壁面的氣泡之方法，要在以下所 述的第四程序至第六程序。 在第四程序中令供給電磁闕1〇為[開]，為了由喷 ❹ 1的喷嘴排出滯留於主槽4到噴墨頭i的噴嘴的配管彎 及/或配管連接部等墨水供給配 邛 微小的[氣泡]，4度藉由三通切換閥7=散佈於墨水中的 n 換閥7Β的操作由壓力办翕 源9的南壓源9Η透過壓力調節器將8〇 ι :軋 施加數秒鐘至主槽4，並立即移到第五程序 的尚壓 若有墨Γ存處等噴嘴::水供給路徑中， 右有附著於壁面的氣泡’則藉由壓 升成反比體積減少，與供給路徑中 與壓力的上 少，並且氣泡的形狀也接近 工、壁面之接觸面積減 ，成為容易流動的狀態。 200938305 · 因此，此時的壓力越高，該滞留的氣泡的體積變化越 大，與壁面的接觸面積越減少，氣泡的流動性更提高，故 較佳，惟過高且時間也長的話，由噴嘴流出的墨水的量也 在第五程序中，在藉由第四程序中的施加高壓吐出墨 水後，藉由三通切換閥7C的操作由壓力空氣源9的低壓源 9L透過壓力調節器將15〜3〇kPa左右的低壓給予主槽4。據 此，附著於接近經過第四程序流動性提高的墨水積存處等的 ©喷嘴的部分的壁面之氣泡與墨水一起被排出到噴嘴之外， 在接近喷嘴的墨水供給路徑氣泡消失。 此外，進行第四程序、第五程序後依照需要重複實施第 四程序、第五程序也可以。 而且’藉由令第四程序與第五程序的壓力的差（差壓） 為50kPa，較佳為50kPa以上的壓力差，可更確實地進行附 著於壁面等的滯留氣泡的除去。 ® 全體喷嘴為可能的話，則在 而且，在上述的第四程序中若在密閉狀態下同時堵塞 話’則在由壓力空氣源9的高壓源9H透In the conventional ink transfer method, the conventional ink is used to clean the number of small inks in the industrial use, so that the bubbles in the middle of the ink amount measuring device are ejected by the ink coated ink. The simple method of 'transportation' erases the cleaning. Although large problems are used in the home, the high number of nozzle tips is extremely large and requires a large amount of absorption, which is handled by large nozzles due to nozzle internals. A method of improving discharge failure of ink from a nozzle caused by bubbles or the like remaining in the nozzle is a method in which a conventional coating apparatus uses a flow path of a nozzle that discharges ink (fl〇w channel) The filter "filter" is a program for performing the first filling of the ink below the pressure of the ink through the transition device, and the second filling is performed by the pressure of the filter to fill the ink (Patent Document 1). According to the method of Patent Document 1, it is revealed that air is left in the vicinity of the opening of the ink discharge portion due to poor printing, that is, the ink is poorly filled, and the air is mixed into the ink. The flow of the ink is hindered, and the discharge of the ink intermittently causes poor printing. 4 200938305 Moreover, the method of mouth ink * (before the start of the patent document or the first print operation of the print sister, the first word action with the specified amount. According to the fixation of the patent water, 'maintain a G action, for example [ [Attachment] It is possible to maintain the movement for a long period of time [Patent Document 1] [Patent Document 2] The recovery system cleaning method of the recording device is as follows: 2) or the like: switching execution at least a predetermined amount after the binding is performed according to the determination criterion - A method of preparing a second discharge 2 of a second preliminary discharge operation of at least two predetermined amounts before the start of printing or after the completion of printing is disclosed in the preliminary discharge operation, and it is revealed that a normal discharge state of the ink flow path can be prevented. Special operations such as [pre-discharge] are used as appropriate, and good printing is performed.发明 曰 2004 2004 2004 2004 2004 2002 2002 2002 2002 2002 2002 2002 2002 2002 2002 2002 2002 2002 2002 2002 2002 2002 2002 2002 2002 2002 2002 2002 2002 2002 2002 2002 2002 2002 2002 2002 2002 2002 依照 依照 依照 依照 依照 依照 依照 依照 依照 依照 依照 依照 依照 依照 依照 依照 依照There is no practical expectation in the smaller type of coating device. As a result, the effect of the countermeasures: the fixing of the ink or the closeness of the solid is the result of the problem of the ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ The flow of the nozzle is spit out and the flow around it is stagnant. In the method of Patent Document 1 or Patent Document 2, in the coating device in which the amount of the head of the ink of the business application coating device or the like, that is, the number of nozzles is large, the paper is a soldier. The bubble in the wall where the ink attached to the vicinity of the 喰喈 is accumulated at the virtual & μ Έ ^ is still insufficient. Therefore, there is a problem that the portion of the bubble that is used to compress the ink by the impact of the ink from the mouth (immediate pressure on the 5 200938305 - liter) is absorbed by the relatively large amount of energy. It is necessary to check and adjust the nozzle cleaning, etc., and it is not possible to start using the coating device immediately. As for the inventors, the results of the review of the method of filling the inks from the entire nozzles, which are possible, from the beginning of the production, are as follows. The coating device of the known ink jet method is applied to a filling by an ink supply pipe by a single force, and for example, the ink is filled in a single filling operation such as an ink supply flow path under the following conditions: 1) Filled with a low pressure of about 15 to 30 kPa (hereinafter referred to as low pressure), or '2), with a medium pressure of 3 〇 to ..., (hereinafter referred to as medium pressure), or 3) A high pressure of about 80 to 150 kPa (hereinafter referred to as high-pressure charging). In the coating device that requires a large number of nozzles such as industrial inkjet, there is no method to achieve sufficient arranging (four) to stay in #给路# The object of the present invention is to provide a method of filling ink and a device thereof, which can reliably discharge such an ink reservoir in front of a nozzle that is retained in the ink supply path. The present invention is directed to a coating apparatus having an inkjet head and an ink filling method thereof in view of the above problems, the coating apparatus having the ink jet head comprising: a negative pressure applied Pressure application means, low pressure application means for applying low pressure 200938305, high pressure application means for applying high pressure, and control means; * and a plurality of on-off valves controlled by the aforementioned control means and switching in the line to the ink tank a valve in which a filling procedure of the ink is to apply a low pressure to the groove, and after the ink is filled into the tip end of the nozzle by the aforementioned groove through the pipe, the high pressure is applied to the groove at least once, and then the program to be printed is The pressure is applied until the groove is applied by the application of the high pressure to apply the low pressure more than once, and the respective programs are controlled and executed by the control means before the printing. Moreover, the pressure difference between the applied high pressure and the applied low pressure in the program at the time of printing is set to 50 kPa or more. Moreover, the upper limit of the applied low pressure when the printing is to be performed is 3 kPa. [Effects of the Invention] 具 In accordance with the present invention In the ink filling method of the coating device of the ink jet head, the ink filling program applies a low pressure to the groove, and the ink is filled into the nozzle tip end portion through the piping through the piping, and then at least one high pressure is applied to the groove to cause the ink to exist. It is possible to remove a very small number of air bubbles in the pipe wall and/or the joint portion of the piping system. Then, when printing, the program will apply pressure to the tank to switch from the applied high pressure to the application of the low pressure more than once, and the initial Applying high pressure to adhere to the head nozzle (the head n〇zzi and / = very small bubbles in the inner wall of the nozzle are compressed 'by the volumetric contraction of the bubble reduces the contact surface of the inner wall of the two nozzles and the shape of the bubble is also close to the spherical disk. The state, by the rapid change of pressure from high pressure to low pressure 200938305 pressure Swing), can reliably discharge very few bubbles in the nozzle from the nozzle. According to this, in the preparation for the start of printing of the inkjet coating device, the ink-filling of the ink from the ink tank to the head, and the discharge operation of the bubbles in the nozzles of the piping flow path and the plurality of nozzles can be performed in a short time. The shortening of the start-up of the coating device and the reduction of the waste required to use the ink filled with the ink can maximize the advantages of the inkjet coating technology and contribute greatly to the improvement of productivity. . [Embodiment] Hereinafter, the best mode for carrying out the invention will be described with reference to the drawings. 1A is a system configuration diagram showing a concept of a system capable of filling ink to an ink jet head in a coating apparatus of an ink jet type according to the present invention, and FIG. 2 is a pressure air applying pressure to a main tank 4. A block diagram of the main part of the source system, and FIG. 3 is a program flow diagram of the foregoing system. The ink jet head 1 on which a nozzle (not shown) is formed is controlled by the command from the head control board 2 to discharge and stop the ink from the nozzle of the ink jet head 1. The inkjet head 1 is connected to the main tank 4 via the ink supply pipe 3 and is supplied with ink. The main tank 4 is directly connected to the sub tank 6 via the ink supply pipe 5 and is replenished with ink. In the main tank 4, a vacuum pump 8 and a pressure air source 9 are connected to a plurality of three-way switching valves 7A and 7B [negative pressure applying means for applying a negative pressure]. The supply solenoid valve 1 and the replenishing solenoid valve 配 are disposed in the ink supply pipe 3 and the ink replenishing pipe 5, and the valve is operated by the command of the system control means (not shown) of the entire device in 200938305. Fig. 2 is a block diagram showing the inside of the pressure air source 9 for applying a pressure to the main tank 4, a low pressure source 9L for generating a low pressure of about 15 to 30 kPa, and a high pressure of about 80 to 15 kPa. The two pressure sources of the high pressure source 9H of the [high voltage application means for applying high pressure] are passed through the pressure regulator 'suitably to apply the low pressure and the high pressure to the main tank 4 by the three-way switching valve 7C. Hereinafter, the ink filling method of the present invention will be described in detail with reference to the flowchart of Fig. 3 . In the initial procedure, 'the procedure of replenishing the ink to the main tank 4 by the sub tank 6 first' starts the vacuum pump 8 from the state where the supply solenoid valve 1 is [OFF] and the supplementary solenoid valve [ is [ON], by the third The operation of the switching valve 7A causes the main groove to be under negative pressure. The ink is replenished from the sub-tank 6 to the main groove 4 by keeping the main groove 4 in a negative pressure state. After the inflow amount is appropriately reached, the supplementary solenoid valve η is [OFF]' to end the first routine. In the second procedure, the supply solenoid valve 10 is [ON], and the operation of the three-way switching valve 7C is applied to the main tank 4 by a low pressure source 9L of the pressurized air source 9 through a pressure regulator to apply a low pressure of about 15 30 kPa. The ink in the main tank 4 is filled in the entire piping portion of the nozzle from the supply pipe 3 to the ink jet head. In the third procedure, the second routine is completed and the high pressure source 9H of the pressurized air source 9 is applied to the main tank 4 through the pressure regulator by the operation of the three-way switching valves 7A, 7C. After confirming the discharge of the ink by the entire nozzle, the supply solenoid valve 10 is turned "OFF", and the main groove is opened to the atmosphere by the operation of the three-way switching valve 7B. According to this, in the ink supply pipe such as the pipe bending portion and/or the pipe connection portion of the nozzle of the inkjet head 1 in the main groove * to 9 200938305, or the minute [bubble] dispersed in the ink is used by the ink jet head. The nozzle of 1 is discharged. In addition, the third program can be repeated. However, in the filling method up to this stage, in the coating apparatus having a plurality of nozzles for industrial use, it is not possible to sufficiently remove air bubbles remaining in front of all the nozzles, particularly in the ink reservoir inside the head. Therefore, even if a predetermined negative pressure is given by this state, a nozzle that does not discharge ink when moving to the printing operation occurs. Effective use of the device for a limited time (an increase in the operating rate of =) is the most important issue for the enterprise or for the device developer. In order to establish a method for removing the air bubbles on the wall surface in the supply path such as the ink reservoir in the ink supply path, which is adhered to the ink supply path, the fourth to sixth procedures are described below. In the fourth program, the supply solenoid 1阙 is [ON], and the ink supply and the like such as the pipe bend and/or the pipe connection portion of the nozzles of the ink jet head i are discharged from the nozzle of the squirt 1 Tiny [bubble], 4 degrees by the three-way switching valve 7 = n-displaced in the ink, the operation of the valve 7 is operated by the south pressure source 9 of the pressure source 9 through the pressure regulator 8 ι : rolling for a few seconds Clock to the main slot 4, and immediately moved to the fifth program if there is a nozzle such as ink storage: in the water supply path, the right side of the bubble attached to the wall is reduced by the pressure to the inverse volume, and The amount of pressure in the supply path is small, and the shape of the bubble is also close to the contact area between the work and the wall surface, and it is in a state of easy flow. 200938305 · Therefore, the higher the pressure at this time, the larger the volume change of the retained bubble, the smaller the contact area with the wall surface, and the more improved the fluidity of the bubble, so it is preferable, if it is too high and the time is long, The amount of ink flowing out of the nozzle is also in the fifth program. After the ink is discharged by the application of the high pressure in the fourth routine, the operation of the three-way switching valve 7C is performed by the low pressure source 9L of the pressurized air source 9 through the pressure regulator. A low pressure of about 15 to 3 kPa is given to the main tank 4. As a result, the air bubbles adhering to the wall surface of the portion of the nozzle which is close to the ink reservoir where the fluidity is improved in the fourth program are discharged out of the nozzle together with the ink, and the bubble in the ink supply path close to the nozzle disappears. Further, after the fourth program and the fifth program are executed, the fourth program and the fifth program may be repeatedly executed as needed. Further, by making the difference (differential pressure) between the pressure of the fourth program and the fifth program 50 kPa, preferably 50 kPa or more, the removal of the retained air bubbles attached to the wall surface or the like can be more reliably performed. ® If all the nozzles are possible, if they are blocked at the same time in the sealed state in the above-mentioned fourth program, then the high-pressure source 9H of the pressurized air source 9 is transparent.
面等滯留的氣泡。Bubbles such as surface retention.
200938305 地流入頭内部，充滿在頭内部的過濾器部及/或墨水積存處 部’由於氣鎖（air lock)現象而妨礙墨水的流動，或者空氣 的排出與墨水的導入無法平順地實施，短時間的墨水導入作 業變的困難，墨水的導入置換就會消耗必要以上的墨水，無 法進行有效的墨水填充作業。 在第六程序中透過起動真空泵8,藉由三通切換間Μ 的操作將規定的負壓（在本例中為以—lkPa為中心，〇 5kpa 的變動寬）給予主槽4,喷墨頭丨的所有的喷墨喷嘴形成適 ©當的彎月形（meniscus)(噴嘴吐出口的氣液界面），成為墨水 的吐出為可能的待機狀態，喷墨頭i的印字前的動作準備7完 可由該狀態進行藉由由系統控制手段（未圖示）給予頭 =基板2控制指令（訊號），由喷墨頭1的噴嘴依二控制 =文，使墨水液滴的吐出配合連續的定時間間隔或應吐出的 序（timing)吐出墨水之通常的塗佈（印字）動作。 接著’針對填充墨水至喷墨頭1的 方法詳細敘述。本次是依照以下的程序， 塗佈裝置進行確認。200938305 The inside of the head flows into the inside of the head, and the filter portion and/or the ink reservoir portion inside the head interferes with the flow of the ink due to the air lock phenomenon, or the discharge of the air and the introduction of the ink cannot be smoothly performed. The ink introduction operation of the time becomes difficult, and the introduction and replacement of the ink consumes more than necessary ink, and an effective ink filling operation cannot be performed. In the sixth routine, the vacuum pump 8 is activated, and the predetermined negative pressure (in this example, centering on -lkPa, 变动5 kpa width width) is given to the main tank 4 by the operation of the three-way switching interval, the ink jet head All of the inkjet nozzles of the crucible are formed in a meniscus (a gas-liquid interface at the nozzle discharge port), and a discharge state in which ink is discharged is possible, and the pre-printing operation of the inkjet head i is completed. In this state, the head = substrate 2 control command (signal) is given by a system control means (not shown), and the nozzle of the ink jet head 1 controls the text to make the discharge of the ink droplets coincide with a continuous set time. The normal coating (printing) action of the ink is discharged at intervals or at the timing of discharge. Next, the method of filling the ink to the ink jet head 1 will be described in detail. This time, it is confirmed by the coating device in accordance with the following procedure.
方法的好壞之確認 藉由搭載噴墨頭的 首先，分 確認在單獨動 接著，藉 噴嘴數..6U4 序、第五巷成， 別單獨相12個噴墨頭其墨水的吐出動作， 作下無異常地進行墨水的連續吐出動作。 由裝設此等12個(紅、、綠、藍各色4個，全體 =的喷墨頭之塗佈裝置進行不包含第四程 200938305 獨的連續動作的塗佈動作。其結果，確認了若藉由堆疊在單 使墨水的連地動作的12個頭之塗佈裝置，同時 嘴的液滴的撞擊此二進行’則一開始缺少來自一部分的嘴 滞留的噴嘴存在相當/的味數著目在接近喷嘴的供給路徑中氣泡 因此，同樣地在確認過無異常的連續吐出動作的丨2個 仏、綠、藍各色4個’全體噴嘴數：6144孔）頭的喷墨頭的 塗佈裝置中，進行依照本發明的填充墨水至喷墨頭的方法， ©亦即第一程序至第六程序的墨水填充方法，進行通常的塗 佈動作並確認了來自全體噴嘴的墨水連續吐出動作的狀 態。其結果’可確認在本發明的方法中一開始i 2個噴墨頭 的全部的喷嘴的液滴的撞擊。 而且，就確認該墨水填充方法在數目更增加的情形下 是否有效之意義上，藉由搭載72個喷墨頭（紅、綠、藍各 色24個，全體喷嘴數：36 8 64孔）的塗佈裝置確認了該墨水 填充方法的功效。其結果，確認了即使增加噴嘴數至6倍， © 一開始連續吐出動作也可能，完全不發生墨水的缺少。 [實施例] 具體上，實施例是針對關於藉由習知方法與依照本發 明的墨水填充方法填充墨水至喷墨頭’並起動裝置時的墨 水吐出的好壞判定之比較實驗詳細地說明。 此外，針對比較實驗，試驗前的條件是如以下般使正 要進行墨水吐出好壞的確認時的程序共通化，俾得到其結 果的客觀性： 13 200938305 1)、排出頭内的洗淨液（PMA(Phenyl Mercuric Acetate: 醋酸笨汞）等的有機溶劑）。 2 )、以和喷墨頭比較的各個方法填充墨水。 3 )、清洗：利用不織布等進行之喷嘴週邊的擦拭 4)、沖洗（flushing):來自全體喷嘴的墨水吐出 5 )、試驗印字（缺少墨水的確認） 而且’試驗後的程序也一樣，與如下共通化： 1)、由主槽至噴嘴的全體墨水的強制排出 ® 2)、填充洗淨液（由主槽填充至喷嘴） 《習知方法的實驗結果》 以下敘述依照習知方法的墨水填充後之來自喷嘴的墨 水吐出結果。 開始的程序是令供給電磁閥10、補充電磁閥都為 [關]，起動真空泵8並藉由三通切換閥7A的操作施加負壓 至主槽4’之後令補充電磁閥11為[開]，完成進行由副槽6 ^供給適當量的墨水至主槽4之第一程序，之後令補充電磁閥 11為[關]。 第二程序是藉由三通切換閥7A、7B、7C的操作由壓力 空氣源9的低壓源9L透過壓力調節器將15〜30kPa的低壓施 加至主槽4，令供給電磁閥1〇為[開]，由主槽4透過墨水 供給配管將墨水填充至喷墨頭1的喷嘴。據此，供給配管中 的空氣被排出，最後墨水被由喷嘴排出。 接著，第三程序是藉由三通切換閥7C的操作由壓力空 氣源9的高壓源9H透過壓力調節器將140 kP a的高壓施加至 14 200938305 主槽4，並確認了由全體喷嘴吐出墨水後’令供給電磁閥l〇 為[關]，藉由三通切換閥7B的操作打開主槽至大氣。據此， 與墨水的排出同時進行伴隨滞留氣泡的排出、除去之墨水填 充。 據此’在低壓下排不完的供給配管中的微細的氣泡被 排出。 然後’第四程序是令供給電磁閥1〇為[開]，起動真空 泵8並藉由三通切換閥7A的操作將規定的負壓（在本例中為 ©以-lkPa為中心，〇. 5kPa的變動寬）給予主槽4，完成喷墨 頭1的所有的喷墨噴嘴形成適當的彎月形之第六程序。 然後，藉由由塗佈裝置的喷墨喷嘴吐出墨水的塗佈動 作（試驗印字）進行確認。The method of confirming the quality of the method is as follows: firstly, the inkjet head is mounted, and the ink is discharged, and the number of nozzles is 6. The order of the nozzles is 6U4, and the fifth lane is formed. The continuous discharge operation of the ink is performed without abnormality. By the application of the above-mentioned 12 (the red, green, and blue colors, and the total number of the inkjet heads of the inkjet heads, the coating operation was performed without the continuous operation of the fourth pass 200938305. As a result, it was confirmed that By stacking the 12-head coating device that moves the ink in a single operation, and at the same time, the impact of the droplets of the nozzle is performed, then there is a lack of a nozzle that is missing from a part of the mouth. In the same manner, in the same manner, in the application device of the ink jet head in which the heads of the two nozzles of the two consecutive green, blue and blue colors, the number of "all nozzles: 6144 holes" have been confirmed. The method of filling the ink to the ink jet head according to the present invention, that is, the ink filling method of the first to sixth programs, performs a normal coating operation and confirms a state in which the ink from the entire nozzle is continuously discharged. As a result, it was confirmed that the collision of the droplets of all the nozzles of the i 2 ink jet heads was started in the method of the present invention. Further, in the sense of confirming whether or not the ink filling method is effective in the case where the number is increased, the coating of 72 ink-jet heads (24 red, green, and blue colors, total nozzle number: 36 8 64 holes) is applied. The cloth device confirms the efficacy of the ink filling method. As a result, it was confirmed that even if the number of nozzles was increased by a factor of six, it was possible to start the continuous discharge operation, and the lack of ink did not occur at all. [Embodiment] Specifically, the embodiment is described in detail with respect to a comparative experiment on the determination of the quality of ink discharged when the ink is filled to the ink jet head by the conventional method and the ink filling method according to the present invention and the starting device is activated. In addition, for the comparative experiment, the conditions before the test are as follows, the procedure for confirming the ink discharge is good, and the objectivity of the result is obtained: 13 200938305 1), the cleaning liquid in the discharge head (Organic solvent such as PMA (Phenyl Mercuric Acetate)). 2) Fill the ink with each method compared with the ink jet head. 3), cleaning: wiping around the nozzle by non-woven fabric, etc. 4), flushing: ink discharge from all nozzles 5), test printing (confirmation of lack of ink) and 'the procedure after the test is the same, as follows Commonization: 1) Forced discharge of the entire ink from the main tank to the nozzle ® 2) Filling the cleaning liquid (filled from the main tank to the nozzle) "Experimental results of the conventional method" The following describes the ink filling according to the conventional method. The ink from the nozzle is then discharged. The starting procedure is to make the supply solenoid valve 10 and the supplemental solenoid valve both [OFF], start the vacuum pump 8 and apply a negative pressure to the main groove 4' by the operation of the three-way switching valve 7A, and then make the supplementary solenoid valve 11 [ON] The first routine for supplying an appropriate amount of ink from the sub-tank 6 to the main tank 4 is completed, and then the replenishing solenoid valve 11 is [OFF]. The second procedure is to apply a low pressure of 15 to 30 kPa to the main tank 4 through the pressure regulator by the low pressure source 9L of the pressurized air source 9 by the operation of the three-way switching valves 7A, 7B, 7C, so that the supply solenoid valve 1 is [ On, the ink is filled into the nozzle of the inkjet head 1 through the ink supply pipe by the main groove 4. According to this, the air in the supply pipe is discharged, and finally the ink is discharged from the nozzle. Next, the third routine is to apply a high voltage of 140 kP a to the main pressure 4 of 14 200938305 through the pressure regulator by the high pressure source 9H of the pressurized air source 9 by the operation of the three-way switching valve 7C, and confirm that the ink is discharged from the entire nozzle. After the 'supply solenoid valve l' is [OFF], the main groove is opened to the atmosphere by the operation of the three-way switching valve 7B. As a result, ink discharge accompanying the discharge and removal of the retained bubbles is performed simultaneously with the discharge of the ink. According to this, fine bubbles in the supply pipe which are not exhausted at a low pressure are discharged. Then, the 'fourth procedure is to make the supply solenoid valve 1 [ [ON], start the vacuum pump 8 and operate the specified negative pressure by the operation of the three-way switching valve 7A (in this example, © is -lkPa as the center, 〇. The variation width of 5 kPa is given to the main tank 4, and the sixth procedure of forming all the ink jet nozzles of the ink jet head 1 to form an appropriate meniscus is completed. Then, it was confirmed by a coating operation (test printing) in which ink was ejected from the inkjet nozzle of the coating device.
、°十算依照該塗佈動作之撞擊彩色濾光片用的玻璃基板 的墨水液滴數之結果如纟i所示，產生2〇 29個無法確認 液滴揸擊的喷嘴的數目（稱為噴嘴的缺少數）。The result of the number of ink droplets of the glass substrate for impacting the color filter according to the coating operation is as shown by 纟i, and the number of nozzles that can not confirm the droplet slamming is generated. The number of nozzles is missing).
《本發明的方法的實驗結果》 以下敘述依照本發明的填充墨水至喷墨頭i的方法的 結果。<<Experimental Results of the Method of the Present Invention>> The results of the method of filling the ink to the ink-jet head i according to the present invention are described below.
與習知方法一樣，開始的程序是令供給電磁閥1 〇、補 電磁閥π都為[關]’起動真空泵8並藉由三通切換閥7A 200938305 的操作施加負壓至主槽4，之後令補充電磁閥11為[開]， 由副槽6供給墨水至主槽4。 第二程序是藉由三通切換閥7A、7B、7c的操作由壓力 空氣源9的低壓源9L透過壓力調節器將15〜3〇kPa的低壓施 加至主槽4,令供給電磁閥10為[開]，由主槽4透過墨水 供給配管將墨水填充至喷墨頭1的喷嘴。 接著，第三程序是藉由三通切換閥7C的操作由壓力空 氣源9的高壓源9H透過壓力調節器將14〇kPa的高壓施加至 ©主槽4，在確認了由全體喷嘴吐出墨水後，令供給電磁閥丄〇 為[關]，藉由三通切換閥7B的操作打開主槽至大氣。據此， 與墨水的排出同時進行伴隨滯留氣泡的排出、除去之墨水填 充。 、 然後，第四程序是令供給電磁閥丨〇為[開]，再度藉由 二通切換閥7B的操作由壓力空氣源9的高壓源9H透過壓力 調節器將140kPa的高壓施加數秒鐘至主槽4。 緊接著’第五程序是藉由三通切換閥7C的操作由壓力 空氣源9的低壓源9L透過壓力調節器將15〜3〇[^3的低壓施 加數秒鐘至主槽4。 …、傻與比較例一一冑，第六程序是藉由三通切換閥7A 的細作由真空泵8將規定的負壓(在本例中為以⑽為中 :里〇.5kPa的變動寬)給予…’完成噴墨頭μ所有的 墨噴嘴形成適當的彎月形之第六程序。 然後，藉由由塗佈裝置的喷墨噴嘴吐出墨水的塗佈動 下驗印字）進行確認。 16 200938305 其結果如表2所示，[喷嘴的缺少數]銳減至〇個或 個。 [表2] 喷嘴總數 喷嘴的缺少 數 吐出率U)As in the conventional method, the starting procedure is to cause the supply solenoid valve 1 补 and the supplemental solenoid valve π to be [OFF]' to start the vacuum pump 8 and apply a negative pressure to the main groove 4 by the operation of the three-way switching valve 7A 200938305, after which The supplemental solenoid valve 11 is [ON], and the ink is supplied from the sub tank 6 to the main tank 4. The second procedure is to apply a low pressure of 15 to 3 kPa to the main tank 4 through the pressure regulator by the low pressure source 9L of the pressurized air source 9 by the operation of the three-way switching valves 7A, 7B, 7c, so that the supply solenoid valve 10 is [ON], the main tank 4 is filled with ink to the nozzle of the inkjet head 1 through the ink supply pipe. Next, the third routine is to apply a high pressure of 14 kPa to the main groove 4 through the pressure regulator by the high pressure source 9H of the pressurized air source 9 by the operation of the three-way switching valve 7C, after confirming that the ink is discharged from the entire nozzle. The supply solenoid valve is turned "OFF", and the main groove is opened to the atmosphere by the operation of the three-way switching valve 7B. As a result, ink discharge accompanying the discharge and removal of the retained bubbles is performed simultaneously with the discharge of the ink. Then, the fourth procedure is to make the supply solenoid valve "open", and again by the operation of the two-way switching valve 7B, the high pressure source 9H of the pressurized air source 9 is passed through the pressure regulator to apply a high pressure of 140 kPa for a few seconds to the main Slot 4. Immediately after the fifth process, the low pressure source 9L of the pressure air source 9 is passed through the pressure regulator by the operation of the three-way switching valve 7C to apply a low pressure of 15 to 3 Torr to the main tank 4. ..., silly and comparative example one by one, the sixth procedure is to use the vacuum pump 8 to set a predetermined negative pressure (in this example, (10) is medium: 〇.5 kPa variation width) by the three-way switching valve 7A. Give... the sixth procedure for completing the ink jet head μ all the ink nozzles to form the appropriate meniscus. Then, it is confirmed by the application of the ink by the ink jet nozzle of the coating device. 16 200938305 The results are shown in Table 2. [The number of missing nozzles] is sharply reduced to one or two. [Table 2] Total number of nozzles Missing number of nozzles Discharge rate U)
由該比較結果’在習知的墨水填充方法中滯留於至所 〇有的噴嘴的墨水供給路徑中的氣泡的除去不充分，然後在 本發明的墨水填充方法可確認大的功效。 針對該結果的差可推測：在本發明中於第四程序中藉 由施加高壓至主槽4 ’藉由使該氣泡的體積減少使與壁面 的接觸面積減少，且氣泡的形狀變形成更接近球體，成為 容易移動的狀態。然後’立即在第五裎序中藉由施加低壓 至主槽4使其成為低壓，接近球形的氣泡在接近球形下增 加體積並且變的更容易流動，與周圍的墨水一起確實地^ ® 排出到噴嘴之外。 據此，可連續地進行確實的 置的使用開始可進行來自所有的噴嘴的 墨水°土出動作，由塗佈裝 出，能以短時間提供生產 如以上依照本發明， 墨水的適當的吐 槽，並由前述槽經由配管路填充墨 後’施加至少一次的高壓至該槽，除 管壁及/或接頭部的極少的氣泡之後， 活動。 墨水填充程序藉由施加低壓至主 水至噴嘴吐出尖端部 去存在於配管系統的 藉由喷墨頭1的所有 200938305 給 壓 5 墨 活 的 的喷墨喷嘴形成適當的彎月形，在正要印字時進行壓力供 源及開關、切換閥等的控制，俾將施加於槽的壓力由高 切換成低壓一次以上，可顯著地降低噴嘴不吐出，據此 如產業用的喷墨塗佈裝置般藉由具有多數個喷嘴的喷 頭，使無喷嘴的缺少數的塗佈為可能，可大大地貢獻於 用喷墨塗佈的本來的特徵之塗佈製品的品質提高、製品 成本降低（cost down)。 © 【產業上的可利用性】 數 本發明可適用於利用噴墨方式的塗佈裝置之中由多 個喷墨頭構成的塗佈裝置等的大型的裝置。 【圖式簡單說明】 圖1是塗佈裝置之系統構成圖。 圖2是低壓、高壓的壓力源之方塊圖。 圖3是塗佈裝置的系統之程序流程圖。 ❹ 【主要元件符號說明】 1 :喷墨頭 2 :頭控制基板 3 :墨水供給配管 4:主槽 5 :墨水補充配管 6 :副槽 18 200938305The result of the comparison is that the removal of the bubbles remaining in the ink supply path to the nozzles existing in the conventional ink filling method is insufficient, and then the large effect can be confirmed in the ink filling method of the present invention. It is presumed that the difference in the result is that in the present invention, by applying a high voltage to the main groove 4' in the fourth program, the contact area with the wall surface is reduced by reducing the volume of the bubble, and the shape of the bubble is deformed closer. The sphere becomes a state that is easy to move. Then, immediately in the fifth sequence, by applying a low pressure to the main groove 4 to make it a low pressure, the nearly spherical bubble increases in volume near the spherical shape and becomes easier to flow, and is reliably discharged together with the surrounding ink. Outside the nozzle. According to this, it is possible to continuously perform the use of the actual setting, and the ink can be ejected from all the nozzles, and the coating can be carried out, and the appropriate spouting of the ink according to the present invention can be provided in a short time. And after the ink is filled in the tank through the piping, 'at least one high pressure is applied to the tank, and the air is removed except for the small bubbles of the pipe wall and/or the joint portion. The ink filling program forms an appropriate meniscus by applying a low pressure to the main water to the nozzle discharge tip portion to be present in the piping system by the ink jet nozzles of all the ink jet heads of the ink jet head 1 to form an appropriate meniscus. When the printing is performed, the pressure source, the switch, the switching valve, and the like are controlled, and the pressure applied to the groove is switched from high to low pressure once or more, so that the nozzle can be remarkably reduced, and the ink jet coating device is industrially used. By the nozzle having a plurality of nozzles, it is possible to apply a number of nozzleless missing coatings, which can greatly contribute to the improvement of the quality of the coated article of the original feature of inkjet coating, and the cost reduction of the product. ). © [Industrial Applicability] The present invention is applicable to a large-sized apparatus such as a coating apparatus comprising a plurality of ink jet heads among coating apparatuses of an ink jet type. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a system configuration diagram of a coating apparatus. Figure 2 is a block diagram of a low pressure, high pressure pressure source. Figure 3 is a flow chart of the system of the coating apparatus. ❹ [Description of main component symbols] 1 : Inkjet head 2 : Head control board 3 : Ink supply piping 4: Main slot 5 : Ink refill piping 6 : Sub tank 18 200938305
7A、7B、7C:三通切換閥 8:真空泵 9 :壓力空氣源 I 0 :供給電磁閥 II :補充電磁閥 197A, 7B, 7C: Three-way switching valve 8: Vacuum pump 9: Pressure air source I 0 : Supply solenoid valve II: Supplemental solenoid valve 19
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| JP2008066402A JP4693857B2 (en) | 2008-03-14 | 2008-03-14 | Ink filling method for ink jet coating apparatus |
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| TW200938305A true TW200938305A (en) | 2009-09-16 |
| TWI465296B TWI465296B (en) | 2014-12-21 |
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| CN111511475A (en) * | 2017-12-19 | 2020-08-07 | 武藏工业株式会社 | Droplet discharge device and droplet discharge method |
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| JP4007165B2 (en) * | 2002-11-15 | 2007-11-14 | セイコーエプソン株式会社 | Functional liquid delivery method, functional liquid delivery apparatus, and droplet ejection apparatus to a functional liquid droplet ejection head |
| JP4511141B2 (en) * | 2002-11-26 | 2010-07-28 | セイコーエプソン株式会社 | Functional liquid filling device for droplet discharge head, droplet discharge device, electro-optical device, and electro-optical device manufacturing method |
| JP2005022229A (en) * | 2003-07-02 | 2005-01-27 | Sii Printek Inc | Pressure damper and method for manufacturing the same, and ink jet recorder |
| JP2007152317A (en) * | 2005-12-08 | 2007-06-21 | Toshiba Corp | Inkjet coating apparatus and maintenance method of the same |
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| CN111511475A (en) * | 2017-12-19 | 2020-08-07 | 武藏工业株式会社 | Droplet discharge device and droplet discharge method |
| US11338589B2 (en) | 2017-12-19 | 2022-05-24 | Musashi Engineering, Inc. | Droplet ejection device and droplet ejection method |
| TWI785170B (en) * | 2017-12-19 | 2022-12-01 | 日商武藏工業股份有限公司 | Droplet discharge device and droplet discharge method |
Also Published As
| Publication number | Publication date |
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| KR101555528B1 (en) | 2015-09-24 |
| TWI465296B (en) | 2014-12-21 |
| JP2009220000A (en) | 2009-10-01 |
| JP4693857B2 (en) | 2011-06-01 |
| KR20090098688A (en) | 2009-09-17 |
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