1322719 九、發明說明： 【發明所屬之技術領域】 本發明係有關於一種噴墨列印頭，特別有關於製造彩 色;慮光片之f墨列印頭及喷墨列印的方法。 【先前技術】1322719 IX. Description of the Invention: [Technical Field] The present invention relates to an ink jet print head, and more particularly to a process for producing a color, a f-print head of a light-sensitive sheet, and an ink jet print. [Prior Art]
近年來彩色濾光片的製造已逐漸使用喷墨列印方式 取代傳統的微影製程，其係利用喷墨列印方式將紅、綠、 藍（RGB)三原色的墨水喷印在彩色濾光片基板的畫素區 内，如此可減少彩色濾光片的製程步驟，較傳統的微影製 程更為簡便並大幅度減少面板製造成本。 然而，由於彩色濾光片之晝素區域的寬度一般而言僅 約，60〜13〇"m，因此如果噴印的墨滴無法準確地噴入 預定的晝素區域内，而落入鄰近的晝素區域，則製作的彩 色濾光片會出現混色之缺陷。 / 請參閱第1圖，其為傳統的喷墨列印頭噴印彩色濾光 片,剖面圖，傳統的喷墨列印頭1〇係在墨水槽12下^設 置喷嘴板14,喷嘴板14具有多個開口 16，使得墨水槽^ :的墨水18經由開口喷印至彩色濾光片基板20的畫素區 ^ 22内。然而’由於噴墨墨滴定位之控制不易，其必須 控fj母個墨滴的體積大小、墨滴的流動性以及墨滴的 賀P路徑，才能使得每個墨滴都落入預定的噴印位置，並 士，勻地填滿整個晝素區域，因此仍會有部分墨滴^益 預定的晝素輯22，而落在鄰近的晝素區域或畫 間的黑色矩陣㈣26’使得彩色渡光片產生； 此外 墨水…二 預定晝素區域的墨幻8之外，由 Ϊ :第=的墨水有部分會沾附在嘴嘴板Μ的表面 -沾:二:：示的墨水28，經過-段時間之後，這 :^在喷嘴板表面上的墨水28會累積 光片基板20上，造成彩色遽光片之缺陷。 因此，業界亟需-種噴墨列印頭，其可 慮光片缺陷產生的問題，以製作品質良好的彩色濾‘ 【發明内容】 本發明提供一種喷墨列印頭，包括. 設置於墨水槽之下且具有複數個開口，以及“二= 具有複數個狹縫，其中第-== 貝上與噴嘴板的開口對齊。 只 、也之提供—種噴墨列印的方法，包括：提供如上 =片的圭’以及猎由喷墨列印頭噴印墨水於彩色濾 =素區内’其中第一檔板將偏離彩色滤光片之晝素 &的喷印路徑之墨水擋住。 一 、"此外’本發明還提供—種喷墨列印的方法，適用於製 ^色itn包括··提供喷墨料頭，其中喷墨 包含喷嘴板以及第-檔板，第—檔板設置於喷嘴板下方並 且具有複數個狹縫，藉由喷嘴板喷射墨水，以及藉由第一 檔板之狹賴導引，喷印墨水於彩U光片的晝素區内。 為了讓本發明之上述目的、特徵、及優點能更明顯易 /*，以下配合所附圖式，作詳細說明如下： 【實施方式】 1322719 為了克服喷墨列印時喷墨墨滴無法完全精確控制定 位，而有部分墨滴會偏離預定喷印路徑之問題，本發明之 喷墨列印頭的設計係利用加裝檔板於喷墨列印頭的喷嘴 板下方，該檔板結構具有複數個狹缝，狹缝的位置與噴嘴 板的開口對齊，因此可提高喷墨列印的準直性，避免墨滴 落在預定喷印位置以外的其他位置，藉此提高喷墨列印的 品質。此外，利用本發明之檔板設計可阻擋反沾在喷嘴板 表面的墨水，避免其滴落在噴印的基板上，以提高噴墨列 印的品質。 請參閱第2A圖，其為本發明一實施例之喷墨列印頭 在基板上喷印之剖面圖，其中的檔板結構為平板狀。喷墨 列印頭100具有墨水槽102,其係用以承載喷墨列印用之 墨水，在墨水槽102下方設置喷嘴板104，喷嘴板具有複 數個開口 106，以使得從墨水槽流出的墨水128依喷印路 徑122喷印至基板124上。 本發明之特徵在於喷嘴板104下方設置第一檔板 108，第一檔板108具有複數個狹缝110，狹縫110與喷 嘴板104的開口 106對齊，可阻擋偏離喷印路徑122的墨 滴130，因此可避免墨滴落在預定喷印區域126以外的其 他位置，像是黑色矩陣區域127。第一檔板108之狹缝110 的寬度大抵上與喷嘴板104之開口 106的寬度相同，其係 由噴印區域126的尺寸而定。 在本發明之一實施例中，也可於第一檔板108下方再 設置第二檔板112,其具有複數個狹縫114,第二檔板112 之狹縫114的寬度大於第一檔板108之狹縫110的寬度， 其增加的寬度約為0.1〜50# m。同樣地，第二檔板112 1322719 可以阻擋偏離喷印路徑122的墨滴132，避免墨滴132落 在預定喷印區域126以外的其他位置，並避免反沾在喷嘴 或疋弟一檔板上之墨滴滴入基板上，藉由第一檔板1〇8以 及/或第二檔板112的裝設，可提高喷墨列印的準直性。 再者，第一檔板108與第二檔板112可以經處理且有 墨性，例㈣氟龍鍍財核理。 八有疏 在一實施例中，基板124可為彩色濾光片基板，而預 疋噴印區域126則為彩色渡光片上的紅、綠、藍（rgb)書 • 素區域，利用本發明之噴墨列印頭喷印製造彩色濾光片， 可避免不同顏e的墨水落在其預定喷印之晝素區域以外 的區域而造成混色，例如，在喷印紅色墨水時，可避免紅 色墨滴落在其鄰近的綠色晝素區域或黑色矩陣區上；同樣 地，可避免綠色墨滴落在其鄰近的藍色畫素區域或黑色矩 陣區上；或是可避免藍色墨滴落在其鄰近的紅色晝素區域 或黑色矩陣區上，因此，所製作的彩色濾光片可避免混色 之缺陷產生。 另外，藉由第一槽板1 〇8的設置可避免沾附在喷嘴板 讚104表面的墨水134滴落至基板124上，而以第一檔板承 接；，同樣地，利用第二檔板112的設置也可避免沾附在第 =檔板108表面的墨水136滴落至基板124上，而以第二 檔板承接。如此，可避免彩色濾光片產生混色或其他的點 缺陷’提高彩色濾光片噴墨列印的品質。 此外，本發明之喷墨列印頭還可包括負壓產生裝置 Π8,其係設置於噴嘴板104與第一檔板1〇8之間，以抽 去第一檔板上的墨水。另外，在第一檔板108與第二檔板 112之間還可以設置負壓產生裝置12〇，以抽去第二檔板 ^的墨水。負塵產生裝置例如為真空栗浦㈣叫），其可以 產生小於76釐米汞柱(mmHg)的負壓。 請參閱第2B圖，其為負麗產生裝置抽去檀板上墨水 的抽取方向之平面圖。負麼產生裝置118、120的抽取方 向119係以檔板1〇8、112的狹縫11〇、114位置為中心， 朝播板之兩個互相平行的外側抽取，位於檔板同_側的各 抽取方向相同且互相平行，其抽取位置不限定於狹縫所在 的區域。 _在本發明之一實施例中，噴墨列印頭的第一檔板、第 二槽板以及墨水制㈣定裝置蚊，目定裝置例如為螺 絲或黏性吸盤(PhySical sticky chuck)或以黏膠方式固定， 以第2A圖的喷墨列印頭為例，其中的固定裝置ιΐ6 絲。 接著，請參閱第3A圖，其為本發明另一實施例之噴 墨列印頭在基板上喷印之剖面圖，其與第2A圖的差別在 於其中的檔板結構為波浪狀。波浪狀第一檔板2 〇 2設置於 喷墨列印頭200的喷嘴板104下方，第一檔板2〇2具有複 數個狹縫204，其與喷嘴板104的開口 1〇6對齊，可以阻 擋偏離噴印路徑122的墨滴13〇。第一檔板2〇2之狹縫2〇4 的寬度大抵上與噴嘴板104之開口 106的寬度相同，其係 =喷印區域126的尺寸而定。此外，波浪狀第一檔板2〇2 還具有複數個波峰212以及複數個波谷21〇,其中波峰212 係位於第一檔板202的狹縫204處，可阻擋偏離噴印路徑 122的墨滴13〇，而波谷21〇的結構則有利於收集偏離^ 印路徑122的墨滴130。 、 在本發明之一實施例中，也可於波浪狀第一檔板2〇2 下方再加裝波浪狀第二檔板206，其具有複數個狹缝 208，波浪狀第二檔板206之狹縫208的寬度大於波浪狀 第一檔板202之狹縫204的寬度，其增加的寬度約為〇.1 〜50/zm。波浪狀第二檔板206可阻擋偏離喷印路徑122 的墨滴132，同樣地，波浪狀第二檔板2〇6也具有複數個 波峰212以及複數個波谷21〇，其中波峰212係位於第二 檔板206的狹縫208處，而波谷210之結構則有利於收集 偏離噴印路徑122的墨滴132,藉由波浪狀第一檔板2〇2 鲁 以及/或波浪狀第一檔板206的設置，可提高喷墨列印的 準直性。再者，第一檔板2〇2與第二檔板2〇6可以經處理 以具有疏墨性，例如鐵氟龍鍍膜方式處理。 此外，波浪狀第一檀板202與波浪狀第二樓板的 波谷結構對於沾附在喷嘴板1〇4表面的墨水134、沾附在 波/良狀第樓板202表面的墨;^ 136以及偏離喷印路徑 122的墨滴13〇和132之收集更加有效率。 為黏性吸盤。In recent years, the manufacture of color filters has gradually replaced the traditional lithography process by inkjet printing, which uses inkjet printing to print inks of three primary colors of red, green and blue (RGB) onto color filters. In the pixel area of the substrate, the process steps of the color filter can be reduced, which is simpler than the conventional lithography process and greatly reduces the panel manufacturing cost. However, since the width of the pixel region of the color filter is generally only about 60 to 13 〇 " m, if the printed ink droplet cannot be accurately injected into the predetermined halogen region, it falls into the vicinity. In the area of the halogen, the color filter produced will have the defect of color mixing. / Please refer to FIG. 1 , which is a conventional ink jet print head printing color filter, a cross-sectional view, a conventional ink jet print head 1 is disposed under the ink tank 12, and a nozzle plate 14 is disposed. The nozzle plate 14 The plurality of openings 16 are provided such that the ink 18 of the ink tanks is printed through the openings into the pixel regions 22 of the color filter substrate 20. However, because the control of inkjet ink droplet positioning is not easy, it must control the volume of the female ink droplets, the fluidity of the ink droplets, and the He P path of the ink droplets, so that each ink droplet falls into a predetermined printing. The position, the gentleman, fills the entire area of the halogen, so there will still be some ink droplets, and the black matrix (four) 26' that falls in the adjacent pixel area or painting makes the color light The film is produced; in addition to the ink... In addition to the ink illusion 8 of the predetermined halogen region, the 墨水: the ink of the = part will adhere to the surface of the mouth plate - - 2:: the ink 28 shown, after - After a period of time, this: The ink 28 on the surface of the nozzle plate will accumulate on the wafer substrate 20, causing defects in the color pupil sheet. Therefore, there is a need in the industry for an ink jet print head which can solve the problem of light sheet defects to produce a good quality color filter. [Invention] The present invention provides an ink jet print head, including: Below the sink and having a plurality of openings, and "two = having a plurality of slits, wherein the -== is aligned with the opening of the nozzle plate. Only, but also provides a method of inkjet printing, including: providing As above, the film's ink and ink are printed by the inkjet print head in the color filter area. The first plate will block the ink from the printing path of the color filter and the color filter. And "further" the present invention also provides a method of inkjet printing, which is suitable for use in the manufacture of inks, including inkjet heads, wherein the inkjet comprises a nozzle plate and a first-plate, the first-plate setting Under the nozzle plate and having a plurality of slits, the ink is ejected by the nozzle plate, and the ink is printed on the halogen region of the color U-ray by the narrow guiding of the first baffle. The above objectives, features, and advantages can be more obvious/*, below The drawings are described in detail as follows: [Embodiment] 1322719 In order to overcome the problem that the inkjet ink droplets cannot be completely accurately controlled when the inkjet printing is performed, and some ink droplets may deviate from the predetermined printing path, the present invention The design of the ink jet print head utilizes an additional baffle under the nozzle plate of the ink jet print head. The baffle structure has a plurality of slits, and the position of the slit is aligned with the opening of the nozzle plate, thereby improving the ink ejection. The collimation of the printing prevents the ink droplets from falling to other positions than the predetermined printing position, thereby improving the quality of the ink jet printing. In addition, the baffle design of the present invention can block the ink that is counter-stained on the surface of the nozzle plate. Avoiding dripping on the printed substrate to improve the quality of the inkjet printing. Please refer to FIG. 2A, which is a cross-sectional view of the inkjet printing head printed on the substrate according to an embodiment of the present invention, wherein The ink jet print head 100 has an ink tank 102 for carrying ink for inkjet printing, and a nozzle plate 104 is disposed below the ink tank 102. The nozzle plate has a plurality of openings 106. To make it from ink The ink flowing out of the trough 128 is printed onto the substrate 124 according to the printing path 122. The invention is characterized in that a first baffle 108 is disposed under the nozzle plate 104, and the first baffle 108 has a plurality of slits 110, slits 110 and nozzles. The openings 106 of the plate 104 are aligned to block the ink drops 130 from the print path 122, thereby preventing ink drops from falling to other locations than the predetermined print area 126, such as the black matrix area 127. The narrowness of the first baffle 108 The width of the slit 110 is substantially the same as the width of the opening 106 of the nozzle plate 104, which is determined by the size of the printing area 126. In one embodiment of the present invention, the first layer 108 may be further disposed below the first plate 108. The second baffle 112 has a plurality of slits 114. The width of the slits 114 of the second baffle 112 is greater than the width of the slits 110 of the first baffle 108, and the increased width is about 0.1 to 50 #m. Similarly, the second baffle 112 1322719 can block the ink drops 132 from the printing path 122, avoiding the ink drops 132 from falling outside the predetermined printing area 126, and avoiding the back-drain on the nozzle or the scorpion The ink droplets are dropped onto the substrate, and the collimation of the ink jet printing can be improved by the mounting of the first baffle 1 〇 8 and/or the second baffle 112. Furthermore, the first baffle 108 and the second baffle 112 can be treated and inked, for example, (iv) fluorolong plating. In one embodiment, the substrate 124 can be a color filter substrate, and the pre-printed area 126 is a red, green, and blue (rgb) substrate region on the color light-emitting sheet, using the present invention. The ink jet print head prints a color filter to prevent the ink of different colors from falling on the area outside the predetermined print area, thereby causing color mixing. For example, when printing red ink, red ink can be avoided. Dropping on its adjacent green halogen region or black matrix region; likewise, avoiding green ink droplets falling on its adjacent blue pixel region or black matrix region; or avoiding blue ink droplets falling on It is adjacent to the red halogen region or the black matrix region. Therefore, the color filter produced can avoid the defects of color mixing. In addition, by the arrangement of the first slot plate 1 〇 8 , the ink 134 adhering to the surface of the nozzle plate 104 can be prevented from dripping onto the substrate 124 to be received by the first baffle; and likewise, the second baffle is utilized. The arrangement of 112 also prevents ink 136 adhering to the surface of the first baffle 108 from dripping onto the substrate 124 and being received by the second baffle. In this way, color mixing or other dot defects can be prevented from occurring in the color filter, and the quality of the color filter inkjet printing can be improved. Further, the ink jet print head of the present invention may further include a negative pressure generating device 8 disposed between the nozzle plate 104 and the first baffle 1 8 to extract ink from the first baffle. In addition, a negative pressure generating device 12A may be disposed between the first baffle 108 and the second baffle 112 to extract the ink of the second baffle plate. The negative dust generating device is, for example, a vacuum pump (four) called, which can generate a negative pressure of less than 76 cmHg (mmHg). Please refer to Fig. 2B, which is a plan view of the extraction direction of the ink on the ebony plate by the negative generating device. The extraction direction 119 of the negative generating devices 118, 120 is centered on the positions of the slits 11 〇 and 114 of the baffles 1 〇 8 and 112, and is extracted toward the two mutually parallel outer sides of the playing board, and is located on the same side of the baffle plate. The extraction directions are the same and parallel to each other, and the extraction position is not limited to the region where the slit is located. In one embodiment of the present invention, the first baffle of the ink jet print head, the second trough plate, and the ink-made (four) fixed device mosquito, such as a screw or a viscous suction chuck (Physical sticky chuck) or The adhesive method is fixed, taking the inkjet print head of Fig. 2A as an example, wherein the fixing device is ΐ6 wire. Next, referring to Fig. 3A, which is a cross-sectional view of an ink jet print head printed on a substrate according to another embodiment of the present invention, the difference from Fig. 2A is that the baffle structure is wavy. The wavy first baffle 2 〇 2 is disposed under the nozzle plate 104 of the inkjet print head 200, and the first baffle 2 〇 2 has a plurality of slits 204 aligned with the opening 1 〇 6 of the nozzle plate 104. The ink droplets 13 偏离 that are offset from the printing path 122 are blocked. The width of the slit 2〇4 of the first baffle 2〇2 is substantially the same as the width of the opening 106 of the nozzle plate 104, which is determined by the size of the printing zone 126. In addition, the wavy first baffle 2 〇 2 further has a plurality of crests 212 and a plurality of troughs 21 〇, wherein the crests 212 are located at the slits 204 of the first baffle 202 to block the ink drops from the printing path 122 13〇, and the structure of the trough 21〇 facilitates the collection of ink drops 130 that deviate from the printing path 122. In an embodiment of the present invention, a wavy second baffle 206 having a plurality of slits 208 and a corrugated second baffle 206 may be further disposed under the wavy first baffle 2〇2. The width of the slit 208 is greater than the width of the slit 204 of the wavy first baffle 202, and the increased width is about 11 to 50/zm. The wavy second baffle 206 can block the ink drops 132 from the printing path 122. Similarly, the wavy second baffle 2 〇6 also has a plurality of peaks 212 and a plurality of troughs 21〇, wherein the crests 212 are located at the The slit 208 of the second baffle 206, and the structure of the trough 210 is advantageous for collecting the ink droplets 132 which are offset from the printing path 122 by the wavy first baffle 2 〇 2 鲁 and/or the wavy first baffle The setting of 206 can improve the collimation of inkjet printing. Further, the first baffle 2〇2 and the second baffle plate 2〇6 may be treated to have ink repellency, such as a Teflon coating process. In addition, the wavy first sandal plate 202 and the wavy second floor slab have an ink 134 adhered to the surface of the nozzle plate 1 〇 4, an ink adhered to the surface of the wave/good slab 202; The collection of ink drops 13A and 132 of the print path 122 is more efficient. For sticky suction cups.
在第3A圖的噴墨列印頭中，用以固定波浪第一檔板 202、波浪第二檔板2〇6以及墨水槽1〇2的固定裝置Μ* 置不限定於狹縫所在的區域。In the ink jet print head of Fig. 3A, the fixing means for fixing the wave first baffle 202, the wave second baffle 2〇6, and the ink tank 1〇2 is not limited to the area where the slit is located. .
、六另呵徊干板狀或兩個波 熟悉此技藝人士當可瞭解， 1322719 也可將單一個或兩個以上的檔板設置於喷嘴板下方，或3 將平板狀檔板與波浪狀檔板任意組合，皆可達到本發明$ 喷墨列印頭的功效。 本發明係利用上述之噴墨列印頭進行喷墨列印製 程，其可用於製造彩色濾光片，喷墨列印的方法包括：提 供如上所述本發明之噴墨列印頭，藉由喷墨列印頭的噴嘴 板喷射墨水，藉由第一檔板之狹縫的導引，噴印墨水至彩 色濾光片的預定晝素區内，其中第一檔板將偏離彩色濾光 # 片的預定晝素區之噴印路徑的墨水擋住。 此外’本發明之噴墨列印的方法還可包括設置第二檔 板於第-槽板下方，利用第二播板將偏離彩色濾光片的^ 定晝素區之噴印路徑的墨水擋住，並且利用第一檔板及第 二檔板分別將反沾於喷嘴板及第一檔板表面的墨水浐 住’以避免其掉落至喷印基板上，#著可以使用負壓產^ 裝置抽去第一檔板及第二擋板上的墨水。 本發明之噴墨列印頭與傳統的喷墨列印頭裝置相較 .之下’可以有效地避免偏離喷印路徑之墨水滴落至欲噴印 的基板上，因此可提高喷墨列印的準直性，此外，其還可 避免反沾在噴墨列印頭的墨水滴落至欲喷印的基板上，因 ^可提高嘴墨列印的品質。當其應用在彩色遽光片的製造 可避免彩色渡光片產生混色之缺陷，得到較佳品質的 彩色遽光片。 ' 雖然本發明已揭露較佳實施例如上，然其並非用以限 定f發明，任何熟悉此項技藝者，在不脫離本發明之精神 =範圍/内胃可做些許更動與潤飾，因此本發明之保護範 圍當視後附之申請專利範圍所界定為準。 【圖式簡單說明】 第1圖為習知的噴 第2a圖為本發明 印之剖面圖。 墨列印頭在基板上喷印之剖面圖。 —實施例之喷墨列印頭在基板上噴 ㈣H圖為第2A圖之喷墨列印頭的負麗產生裝置抽去 植板上4水之峰方向的平面圖。 噴印Lr面Ξ為本發明另—實施例之喷墨列印頭在基板上 第3B圖為第3A圖之噴墨列印頭的負壓產生裝置 檔板上墨水之抽取方向的平面圖。 【主要元件符號說明】 10〜習知的噴墨列印頭；12、102〜墨水槽； 14、104〜噴嘴板； 16、106〜喷嘴板的開口； 18、128〜喷印路徑之墨滴；20、124〜喷印的基板； 22、126〜預定噴印的晝素區域； 24、130、132〜偏離噴印路徑之墨滴； 26〜、127黑色矩陣區域；28、134、136〜沾附的墨水； 100、200〜噴墨列印頭； 108、202〜第一檔板； 110、204〜第一檔板之狹缝； 112、206〜第二檔板； 114、208〜第二檔板之狹縫； 116、214〜固定裝置； 118、120〜負壓產生裝置； 119〜負壓抽取方向； 122〜喷印路徑； 210〜波浪狀檔板的波谷；212〜波浪狀檔板的波峰。 12Six, another 徊 徊 dry plate shape or two waves familiar with this artist can understand, 1322719 can also be placed one or more than one baffle below the nozzle plate, or 3 flat plate and wavy file Any combination of panels can achieve the efficacy of the inkjet printhead of the present invention. The present invention utilizes the above-described ink jet print head for ink jet printing processes, which can be used to fabricate color filters, and the method of ink jet printing comprises: providing the ink jet print head of the present invention as described above The nozzle plate of the inkjet print head ejects ink, and by the guiding of the slit of the first baffle, the ink is printed to a predetermined pixel region of the color filter, wherein the first baffle will deviate from the color filter# The ink of the printing path of the predetermined pixel region of the sheet is blocked. In addition, the method of inkjet printing of the present invention may further include disposing a second baffle below the first trough plate, and blocking the ink of the printing path deviating from the color filter region of the color filter by the second playing plate. And using the first baffle plate and the second baffle plate to respectively suck the ink on the surface of the nozzle plate and the first baffle plate to prevent it from falling onto the printing substrate, and the negative pressure generating device can be used. The ink on the first baffle and the second baffle is removed. Compared with the conventional ink jet print head device, the ink jet print head of the present invention can effectively prevent the ink which is out of the printing path from dripping onto the substrate to be printed, thereby improving the ink jet printing. In addition, it can also prevent the ink that is smeared on the inkjet print head from dripping onto the substrate to be printed, because the quality of the ink printing can be improved. When it is applied to the manufacture of color calenders, it can avoid the defects of color mixing of color-based light-passing sheets, and a color-tuning sheet of better quality can be obtained. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the invention, and any one skilled in the art can make some modifications and refinements without departing from the spirit of the invention. The scope of protection is subject to the definition of the scope of the patent application. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a conventional spray. Fig. 2a is a cross-sectional view of the present invention. A cross-sectional view of the ink jet print head printed on the substrate. - The ink jet print head of the embodiment is sprayed on the substrate. (4) H is a plan view of the negative direction of the water jet of the ink jet print head of Fig. 2A. The ink jet printing head of the ink jet printing head of the ink jet printing head of Fig. 3A is a plan view of the ink extracting direction of the negative pressure generating device of the ink jet printing head of Fig. 3A. [Main component symbol description] 10~ conventional inkjet print head; 12, 102~ ink tank; 14, 104~ nozzle plate; 16, 106~ nozzle plate opening; 18, 128~ inkjet path ink drop 20, 124~printed substrate; 22, 126~ predetermined printed halogen region; 24, 130, 132~ ink droplets offset from the printing path; 26~, 127 black matrix area; 28, 134, 136~ Adhered ink; 100, 200~ inkjet print head; 108, 202~ first baffle; 110, 204~ first baffle slit; 112, 206~ second baffle; 114, 208~ Second plate slit; 116, 214~ fixing device; 118, 120~ negative pressure generating device; 119~ negative pressure extraction direction; 122~ printing path; 210~ wave-shaped baffle trough; 212~ wavy file The crest of the board. 12