TW553835B

TW553835B - Asymmetric ink emitting orifices for improved inkjet drop formation

Info

Publication number: TW553835B
Application number: TW089110975A
Authority: TW
Inventors: Robert C Maze; Timothy L Weber; Arun K Agarwal
Original assignee: Hewlett Packard Co
Priority date: 1999-08-30
Filing date: 2000-06-05
Publication date: 2003-09-21
Also published as: CN1286170A; CN1212935C; KR20010021415A; BR0004016A; BR0004016B1; KR100614735B1

Abstract

A printhead having reduced spray includes orifi from which ink is expelled by an ink ejector. The orifi employ an aperture (803) at the outer surface of the orifice plate having an asymmetrical hourglass shape to cause the expelled ink drop to break off at the narrow end of the orifice aperture.

Description

553835553835

經濟部智慧財產局員工消費合作社印製Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs

五、發明說明（1 ) 本發明係為Agarwal等人於1997年25曰提出之第 08/805488號美國專利申請案“減少霧點之噴墨列印頭開孔 ’’的部份後續申請案，而前案又為冒以£1>於1995年1〇月25 曰提出之第08/547885號美國專利申請案，，非圓形列印頭開孔的部份後續申請案，並讓渡給本發明之受讓人者。本發明概有關於一種改良喷孔設計的喷墨印表機列印頭，尤有關於一種列印頭喷孔設計，其具有一開孔乃賦具減少墨滴霧化及改良噴徑誤差之特性者。一噴墨印表機能以一控制的方式來噴射墨滴，而使該等墨滴附著於如紙張之媒體上的所需位置上來形成文字及圖像。在其最簡單的形式中，此等印表機乃可被相像成一機構，其可在一位置移動及操作該媒體，而使墨滴能印在該媒體上；有一列印匣會控制墨水流及將墨滴噴至該媒體上，並適當地控制硬體及軟體。一習知的噴墨印表機之列印S含有一墨水容裝部，其可儲存並在需要時供應墨水，及一列印頭乃可藉印表機控制軟體之指令來加熱並噴出墨水。典型地，該列印頭係為一疊層結構，包含一半導體基片，一阻擋材料結構係呈蜂巢狀而具有墨水流道，及一孔板乃貫設許多呈圖案列設的小孔，可容墨滴被噴出。在一種噴墨印表機中，其噴墨機構含有許多的加熱電阻器設在該半導體基片中，而各對應於一設在阻擋層中的噴墨室，及一在該孔板中的開孔。該各加熱電阻器係連接於該印刷機的控制軟體’而使各電阻器可被獨立地激發充能來迅速將一部份的墨水蒸發成一氣泡，然後使一墨滴由 I·------- —tr---------線—AWI (請先閱讀背面之注意事項再填寫本頁)V. Description of the invention (1) The present invention is a part of the subsequent applications of US patent application No. 08/805488 "reducing fogging of inkjet print head openings" filed by Agarwal et al. The former case is a US patent application No. 08/547885, filed on October 25, 1995, with a follow-up application of a non-circular print head opening, and transferred To the assignee of the present invention. The present invention relates generally to an inkjet printer print head with an improved nozzle design, and more particularly to a print head nozzle design with an opening for reducing ink droplet mist. Those who can change and improve the characteristics of the nozzle error. An inkjet printer can eject ink droplets in a controlled manner, and make the ink droplets adhere to the desired position on a medium such as paper to form text and images. In its simplest form, these printers can be likened to a mechanism that can move and manipulate the media at a position so that ink drops can be printed on the media; a print cartridge controls the ink flow And spray ink drops onto the media, and properly control the hardware and software. The print S of the conventional inkjet printer includes an ink containing section which can store and supply ink when needed, and a print head which can be heated and ejected by instructions of the printer control software. Typical Ground, the print head is a laminated structure, including a semiconductor substrate, a barrier material structure is in a honeycomb shape with ink flow channels, and an orifice plate is provided with many small holes arranged in a pattern, which can be The ink droplet is ejected. In an inkjet printer, the inkjet mechanism includes a plurality of heating resistors provided in the semiconductor substrate, each corresponding to an inkjet chamber provided in a barrier layer, and Openings in the orifice plate. The heating resistors are connected to the control software of the printing press so that each resistor can be independently excited and charged to quickly evaporate a portion of the ink into a bubble, and then make A drop of ink from I · ------- —tr --------- line—AWI (Please read the precautions on the back before filling this page)

本紙張尺度刺+關家標準（CNS)A4規格（210 X 297公爱〉經^部智慧好產局員工消費合作社印製 553835 Α7 ------ Β7 五、發明說明（2 ) 一孔中噴出。墨水會流入設於阻插層中的噴墨室而包圍著各加熱電阻器，並等待該電阻器的激發。於墨滴發射而墨泡塌陷之後，墨水會回填該喷墨室至一點處，在該處會形成一凹凸曲面橫過該開孔。回填該噴墨室之墨水所流過之阻擋層的通道之形式及結束，將會影響墨水回填該噴墨室的速度及該墨水曲面的動態。有關印表機、列印匣及列印頭構造等之進一步細節，將可見於Hewlett-Packard Journal，Vol.36，No.5, May 1985,及Hewlett-Packard Journal，Vol.45，Νο·1，February 1994。列印l£ 0又s十者所面對之一個問題後，在達到一高速的列印速度時亦須維持較高的列印品質❶當有一墨滴由一孔中噴出時’由於在噴墨室内之墨水快速地蒸發，會使大部份噴出墨水的質量集中於被射至該媒體的墨滴中。但是，有一小部份噴出的墨水會存在於一尾部中，該尾部會由該墨滴延伸至開孔表面。在尾部之墨水的速度通常會比在該墨滴中的墨水速度更慢，因此有時當該墨滴被噴射時，會有太多的尾部由該墨滴斷掉。在斷掉的尾部中之一些墨水會再加入該被噴出的墨滴中，或者被保留如該墨滴的毛邊而在列印材料上形成粗糙的邊緣。亦有一些被喷出之尾部墨水會回到該列印頭中，形成該列印頭孔板表面上的墨漿。有些在斷開尾部中的墨水會形成更小的細滴（霧點），其會沿該墨滴之大致方向任意地行進及散佈。該等霧點時常會附著該媒體上，而形成墨潰狀的背景。為減少霧點的有害結果，有人降低列印操作的速度，但其會使-印表機在一定時間内減少列印頁數。此霧點問 I —II-----I I I I I ^ ·11111111 (請先閱讀背面之注意事項再填寫本頁)This paper scales thorn + Guan Jia Standard (CNS) A4 specification (210 X 297 public love) Printed by the Ministry of Economics and Goods Production Bureau Staff Consumer Cooperatives 553835 Α7 ------ Β7 V. Description of the invention (2) One hole The ink will flow into the inkjet chamber provided in the blocking layer to surround each heating resistor and wait for the resistors to fire. After the ink droplets are emitted and the ink bubbles collapse, the ink will fill the inkjet chamber to At one point, a concave and convex curved surface will be formed across the opening. The form and end of the channel of the barrier layer through which the ink flows back to the inkjet chamber will affect the speed of ink backfilling the inkjet chamber and the Dynamics of the ink surface. Further details about the structure of the printer, print cartridge and print head will be found in Hewlett-Packard Journal, Vol. 36, No. 5, May 1985, and Hewlett-Packard Journal, Vol. 45, Νο · 1, February 1994. After printing l £ 0 and s, a problem faced by the ten people, it is necessary to maintain a high printing quality when reaching a high speed printing speed. When ejected from a hole, 'the ink in the inkjet chamber evaporates rapidly, Part of the mass of the ejected ink is concentrated in the ink droplets that are ejected to the media. However, a small part of the ejected ink will exist in a tail, which will extend from the ink droplets to the surface of the opening. The speed of the ink is usually slower than the speed of the ink in the ink drop, so sometimes when the ink drop is ejected, too many tails are broken off by the ink drop. Some of the ink in the broken tail Will be added to the ejected ink droplet, or retained as the burr of the ink droplet to form a rough edge on the printing material. Some ejected tail ink will return to the print head and form Ink paste on the surface of the orifice plate of the print head. Some ink in the broken tail will form smaller droplets (fog spots) that will arbitrarily travel and spread along the approximate direction of the ink droplets. Dots often attach to the media, forming an ink-bursting background. To reduce the harmful effects of fog, some people reduce the speed of the printing operation, but it will make the printer reduce the number of printed pages within a certain period of time. This fog point asks I —II ----- IIIII ^ · 111111 11 (Please read the notes on the back before filling this page)

經濟部智慧財產局員工消費合作社印？取 553835 --------- B7____ 五、發明說明（3 ) 題亦曾被以改善該噴墨室及在阻擋層中饋墨道的構造和形狀來解決。開孔的形狀亦會影響該霧點現象，請參見Weber 等人於1996,2,29提出之第08/608923號美國專利申請案，，不對稱的列印頭開孔，，。一種製造孔板的習知方法係在一預製的心片上使用一無電鍍著技術。該等心片乃示於第1圖中（該圖並非按比例、、會製），其中有一基片1 〇 1具有至少一平面由矽或玻璃所構成。在該基片101的平坦表面上乃設有一導電層1〇3 ,其通常為一鉻或不銹鋼的薄膜。有一直空澱積法，例如平面磁控管製法，乃可被用來澱積此導電層103。另一種真空艰積法則可用來澱積一個電層105，其通常係為氮化矽，乃可藉一真空澱積法例如電漿增強之化學蒸氣澱積法來形成。該介電層105必須非常薄，通常其厚度大約為0.3 " m。 η電層105會被以一阻光罩來罩覆，再曝現於紫外光，並進行電數触刻私度’來除掉大部份的介電層，而保留在該導電層103上預設位置處之，，押鈕，，介電材料。當然，該位置係預定將要成為該孔板之各開孔處，其將會形成於該心片上方。該可再使用之心片會被置入一電鑄浴中，在其中該導電層103會形成一陰極，而一基本材料，典型為鎳則會形成陽極。在此電鑄過程中，鎳金屬會由該陽極移轉至該陰極（如所示膜層107)而固設於該導電層103的導電區域上。由於該鎳金屬板會由該心片之各導電板上均勻生成，故一旦達到該介電押鈕105處，該鎳會以一致而可預測的圖案本紙張尺度適用中國國家標準（CNS)A4規格（21G X 297公爱)----- (請先閱讀背面之注意事項再填寫本頁) ta. 線- 553835 A： B7 經濟#智慧財產局員工消費合作社印製五、發明說明（4 ) 疊覆在該介電層上。該鍍著製程的參數，包括鍍著的時間，皆會被仔細控制，因此覆設於該介電層押鈕105上之鏡層107的開孔會在該介電層表面形成預定的直徑（典型約為 45# m)。此直經通常係為該介電層押鈕1〇5的三分之一至五分之一，並使該鎳層107頂部在該孔板的内表面上具有一直徑d2的開孔，其乃為直徑dl之開孔的三至五倍，此心孔將成為在該孔板外表面的孔隙。完成該無電鍍著程度之後，此剛被製成的孔板會被由該心片卸下，並被鍍金俾使其能抗蝕。其它有關金屬孔板的製造說明乃可見於美國專利第 4773971 號、5167776 號、5443713 號及 556〇837 號等各案中’其皆已讓渡給本發明之受讓人。一妥當地導喷墨滴及不良的周邊霧點現象，會使形成於一噴墨列印媒體上的文字及圖像產生較差的品質。故由該噴孔側邊任意形成的墨滴投㈣徑，及因墨滴尾部斷開所造成的霧點’最好能被消減才是較理想的。本發明係有關一噴墨印表機的列印頭，其乃利用一喷墨器來由一孔板中之開孔噴出墨滴者。該孔板具有至少一開孔貫穿該孔板而由其一第一平面延伸至一大致與該第一平面平行的第二平面。該開孔在第二平面具有一孔隙，其包含至少二相交的邊緣形成該孔隙的周界。一第一邊緣包 ^八有第半從的第一弧段及一第一中心位於該孔隙的周界内部。-第二邊緣包含—具有第二半徑的第二孤段及一第二中心位於該孔隙的周界外部。圖式之簡單說明：本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公爱） ^--------^---------0 (請先閱讀背面之注意事項再填寫本頁) 553835 A： B7 經濟部智慧財產局員工消費合作社印製五、發明說明（第1圖為一孔板的剖視圖’具有一心片及一孔板設在該心片上。第2圖為一習知列印頭的剖視圖，示出一嘴墨室。第3圖為一習知列印頭的孔板外表面之平面圖。第4圖為一習知列印頭的剖視圖，表示噴出一墨滴。第5圖為墨滴曲面系統的理論模型，可用來瞭解本發明的性能。第6圖為霧點及細長的墨滴尾部在一列印媒體上之有害作用的複製圖。第7A及7B圖係該孔板外表面的平面圖，乃示出表面孔隙。第8A及8B圖係該孔板表面的平面圖，乃示可被使用於本發明之一表面孔隙。第9A及9B圖係在一列印媒體上之霧點作用的複製圖及本發明所提供的改良效果。第10圖表示一種可被使用於本發明之形成一孔隙的技術第11圖表不另種可被使用於本發明之形成一孔隙的技術第12圖為該孔板外表面之平面圖，示出可被使用於本發明之表面孔隙及對應於一喷墨室的開孔。當使用本發明之不規則孔隙時，將可減少任意的墨滴噴射及太多的霧點’其噴孔，係可被偏向於由該噴孔的一個方向產生 .1 ^--------^---------^—^wi (請先閱讀背面之;i意事項再填寫本頁)Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs? Take 553835 --------- B7____ 5. Description of the Invention (3) The problem has also been solved by improving the structure and shape of the inkjet chamber and the ink feeding channel in the barrier layer. The shape of the opening also affects this fogging phenomenon. Please refer to US Patent Application No. 08/608923, filed by Weber et al., 1996,2,29, for asymmetric printing head openings. One known method of making orifice plates is to use an electroless plating technique on a prefabricated core. The core pieces are shown in the first figure (the figure is not to scale, and will be made). One of the core pieces 101 has at least one plane made of silicon or glass. A conductive layer 103 is provided on the flat surface of the substrate 101, which is usually a thin film of chromium or stainless steel. A vacuum deposition method, such as a planar magnetron control method, can be used to deposit the conductive layer 103. Another vacuum hardening method can be used to deposit an electrical layer 105, which is usually silicon nitride, but can be formed by a vacuum deposition method such as plasma enhanced chemical vapor deposition. The dielectric layer 105 must be very thin, and typically has a thickness of about 0.3 m. The η electrical layer 105 will be covered with a light-shielding mask, and then exposed to ultraviolet light, and will be electrically touched to remove most of the dielectric layer and remain on the conductive layer 103 At the preset position, the button, dielectric material. Of course, this position is intended to be the openings of the orifice plate, which will be formed above the core piece. The reusable core sheet is placed in an electroforming bath in which the conductive layer 103 forms a cathode, and a basic material, typically nickel, forms an anode. During the electroforming process, nickel metal is transferred from the anode to the cathode (such as the film layer 107 shown) and is fixed on the conductive region of the conductive layer 103. Since the nickel metal plate will be uniformly generated from the conductive plates of the core piece, once the dielectric button 105 is reached, the nickel will have a consistent and predictable pattern. The paper size applies the Chinese National Standard (CNS) A4 Specifications (21G X 297 public love) ----- (Please read the notes on the back before filling in this page) ta. Line-553835 A: B7 Economy # Printed by the Intellectual Property Bureau Employee Consumption Cooperative V. Invention Description (4 ) Overlying the dielectric layer. The parameters of the plating process, including the plating time, are carefully controlled, so the openings of the mirror layer 107 overlying the dielectric layer button 105 will form a predetermined diameter on the surface of the dielectric layer ( (Typically about 45 # m). This straight through is usually one-third to one-fifth of the dielectric layer button 105, and the top of the nickel layer 107 has an opening with a diameter d2 on the inner surface of the orifice plate. It is three to five times the opening of diameter dl. This core hole will become a pore on the outer surface of the orifice plate. After the degree of electroless plating is completed, the newly made orifice plate is removed from the core piece, and is plated with gold to make it resistant to corrosion. Other manufacturing instructions for metal orifice plates can be found in U.S. Patent Nos. 4,739,771, 5,167,776, 5,437,313, and 556,0837, all of which have been assigned to the assignee of the present invention. Properly directing inkjet drops and poor peripheral fogging can cause poor quality of text and images formed on an inkjet print medium. Therefore, it is preferable that the drop diameter of the ink droplets arbitrarily formed by the side of the nozzle hole, and the fog point 'caused by the tail of the ink droplet being broken can be reduced. The present invention relates to a print head of an inkjet printer, which uses an ink jet device to eject ink droplets from openings in an orifice plate. The orifice plate has at least one opening extending through the orifice plate and extending from a first plane thereof to a second plane substantially parallel to the first plane. The opening has a pore in a second plane, which includes at least two intersecting edges forming a perimeter of the pore. A first edge package includes a first arc segment with a half-slave and a first center located inside the perimeter of the aperture. -The second edge contains a second solitary segment having a second radius and a second center located outside the perimeter of the aperture. Brief description of the drawing: This paper size is applicable to China National Standard (CNS) A4 specification (210 X 297 public love) ^ -------- ^ --------- 0 (Please read the back first Note: Please fill in this page again.) 553835 A: B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. 5. Description of the invention (Figure 1 is a cross-sectional view of a perforated plate. Figure 2 is a cross-sectional view of a conventional print head, showing a mouth ink chamber. Figure 3 is a plan view of the outer surface of an orifice plate of a conventional print head. Figure 4 is a cross-sectional view of a conventional print head. , Which indicates that an ink droplet is ejected. Figure 5 is a theoretical model of the ink droplet curved surface system, which can be used to understand the performance of the present invention. Figure 6 is a reproduction of the harmful effects of fog spots and slender ink droplet tails on a print medium. Figures 7A and 7B are plan views of the outer surface of the orifice plate, showing surface pores. Figures 8A and 8B are plan views of the orifice plate surface, showing surface pores that can be used in the present invention. 9A and 9B Figure 9B is a copy of the fog effect on a print medium and the improvement provided by the present invention. Fig. 10 shows a technique for forming a void that can be used in the present invention. Fig. 11 is not another technique that can be used for forming a void in the present invention. Fig. 12 is a plan view of the outer surface of the orifice plate. The surface pores used in the present invention and the openings corresponding to an inkjet chamber. When the irregular pores of the present invention are used, any ink droplet ejection and too many fog points can be reduced. It is biased to be generated from one direction of the nozzle. 1 ^ -------- ^ --------- ^-^ wi (Please read the back of the page first; I want to fill out this page)

Φ 經濟#智慧*財產局員工消費合作社印製 553835 Α7 _ Β7 五、發明說明（6 ) 一傳統的列印頭之截面乃示於第2圖中。有一薄膜電阻器201會被設在一半導體基片203的表面，並通常藉在半導體基片203表面上之敷設金屬（未示出）來連接輸入電源。此外，有各種膜層能對化學及機械式攻擊提供保護者，乃可被覆設在該加熱電阻器201上，但為清楚起見並未示於第2圖中。有一層阻擋材料205被選擇性地設置在該矽基片203表面（或其上之膜層表面），而留下一開孔或噴墨室 2 0 7壤繞該加熱電阻器2 01 ’因此墨水在被該加熱電阻器2 〇 1 激發而由一噴孔209噴出之前，會貯存在該噴墨室中。該阻擋層205的材料傳統係為E.I.DuPont De Nemours and Company所產銷的Parad®。該噴孔209係在該孔板1 〇7上之一孔’乃由該孔板的内側面延伸至其外側面，而可被製成該孔板的一部份如先前所述。第3圖為一習知列印頭（即顯示第2圖的α·α戴面者）由該孔板107的外表面3 13觀看該噴孔209的頂視圖。有一饋墨道301設在該阻擋層205中，俾將墨水由一較大的墨水源 (未示出）送至該喷墨室中。第4圖表示墨水由該喷孔209被噴出22微秒之後的墨滴401形狀。在習知的孔板中（其係使用圓形開孔），該墨滴401會保持一長尾部403，其可被見到至少回伸至該孔板107之噴孔209處。在該墨滴401離開孔板而喷出該墨滴的氣化墨泡崩陷之後，毛細吸力會由該墨水源經該饋墨道3〇 1汲取墨水。在一潮濕的系統中，墨水會很快地回衝至該喷墨室2〇7中而使其滿溢，故會形成一凸拱典面。該等曲面在安定下來本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） I I I I · ·1111111 ^ ·1111111· (請先閱讀背面之注意事項再填寫本頁) 9 經濟部智慧財產局員工消費合作社印制π 553835 A： -----B7__ i、發明說明（7 ) 之前會沿其平衡位置振盪循環數次。當該曲面凸拱時，在該凸拱曲面中之額外的墨水將會增加應被噴出之墨滴的體積。而在此等循環中形成凹縮的曲面則會減少應被噴出之墨滴的體積。印列頭之設計已藉著提高該饋墨道之流動阻抗來改良及增進該墨水回填及凹凸曲面系統的阻滯。通常此種改良係藉加長該饋墨道，縮小該饋墨道截面，或增加該墨水的黏度等而達成。但該等提高墨水回填液流阻抗的作法’時常會造成較低的回填次數，而減低墨滴噴射速度及列印速度。該凹凸曲面系統之一簡化的分析乃如第5圖所示的機械模型，其中有一塊體5〇1質量相當於要被喷出的墨滴者 ’乃被一具有彈性常數k的彈簧5〇5連結於一固定結構5〇3 ，该κ係反比於噴孔的有效半徑。該塊體5〇1亦被一緩衝裝置507連結於該固定結構5〇3，該緩衝裝置係對應於通道的液流阻抗及其它的墨水通道特性。在本構造中，該墨滴重塊501係在比於噴孔的直徑。因此，於該機械模型中，右要控制該凹凸曲面的特性及運作，則可藉妥當設置饋墨道來調整該緩衝裝置507的緩衝因素，或者調整該彈簧5〇5 的彈性常數。當該墨滴401由孔中噴出時，其大部份質係被包含於該墨滴4〇1的前頭，且最大的速度亦在該質量中。其餘的尾部403乃包含少數的墨水質量，而其速度之分佈乃由靠近墨滴頭部處的幾乎相同於該頭部速度，至在靠近該喷孔處的尾部其速度乃小於墨滴頭部等之範圍中。某些時候當 -----^—：-----·--------訂---------線——V (請先閱讀背面之注意事項再填寫本頁)Φ ECONOMY # Printed by the Consumer Cooperative of the Property Bureau 553835 Α7 _B7 V. Description of Invention (6) A cross section of a traditional print head is shown in Figure 2. A thin-film resistor 201 is provided on a surface of a semiconductor substrate 203, and usually a metal (not shown) is connected to the input power source by laying a metal (not shown) on the surface of the semiconductor substrate 203. In addition, there are various film layers that can provide protection against chemical and mechanical attacks, which can be coated on the heating resistor 201, but are not shown in the second figure for clarity. A layer of blocking material 205 is selectively disposed on the surface of the silicon substrate 203 (or the surface of the film layer thereon), leaving an opening or an ink-jet chamber 2 0 7 around the heating resistor 2 01 ′. The ink is stored in the ink-jet chamber before being excited by the heating resistor 201 and ejected from an ejection hole 209. The material of the barrier layer 205 is traditionally Parad® manufactured and sold by E.I. DuPont De Nemours and Company. The nozzle hole 209 is a hole 'in the orifice plate 107, which extends from the inner side to the outer side of the orifice plate, and can be made into a part of the orifice plate as previously described. Fig. 3 is a top view of a conventional printing head (that is, the α · α face-wearing person shown in Fig. 2) viewing the nozzle hole 209 from the outer surface 3 13 of the orifice plate 107. An ink feed channel 301 is provided in the blocking layer 205, and the ink is sent from a larger ink source (not shown) into the ink jet chamber. Fig. 4 shows the shape of an ink droplet 401 after the ink is ejected from the ejection hole 209 for 22 microseconds. In a conventional orifice plate (which uses a circular opening), the ink droplet 401 will maintain a long tail 403, which can be seen at least extending to the orifice 209 of the orifice plate 107. After the ink droplet 401 leaves the orifice plate and ejects the vaporized ink bubble of the ink droplet, the capillary suction force will draw ink from the ink source through the ink feeding channel 301. In a humid system, the ink will quickly flush back into the inkjet chamber 207 to make it overflow, thus forming a convex arch surface. These surfaces are stabilized. The paper size is in accordance with China National Standard (CNS) A4 (210 X 297 mm) IIII · · 1111111 ^ · 1111111 · (Please read the precautions on the back before filling this page) 9 Ministry of Economic Affairs Wisdom Printed by the Consumer Cooperative of the Property Bureau π 553835 A: ----- B7__ i. The invention description (7) will oscillate several times along its equilibrium position. When the curved surface is convex, the extra ink in the curved surface will increase the volume of ink droplets that should be ejected. Forming a concave curved surface during these cycles reduces the volume of ink droplets that should be ejected. The design of the print head has improved and enhanced the retardation of the ink backfill and uneven surface system by increasing the flow resistance of the ink feed channel. This improvement is usually achieved by lengthening the ink feed channel, reducing the cross section of the ink feed channel, or increasing the viscosity of the ink. However, these methods of increasing the ink backfill liquid flow resistance ’often result in a lower number of backfills and reduce the ink droplet ejection speed and printing speed. One simplified analysis of this concave-convex surface system is a mechanical model as shown in Fig. 5, in which there is a block 501 whose mass is equivalent to that of an ink droplet to be ejected ', and is a spring 5 having an elastic constant k. 5 is connected to a fixed structure 503, the κ system is inversely proportional to the effective radius of the nozzle. The block 501 is also connected to the fixed structure 503 by a buffer device 507, which corresponds to the flow resistance of the channel and other characteristics of the ink channel. In this configuration, the ink droplet weight 501 is larger than the diameter of the nozzle hole. Therefore, in the mechanical model, if you want to control the characteristics and operation of the concave-convex surface, you can adjust the cushioning factor of the cushioning device 507 by properly setting the ink feed channel, or adjust the elastic constant of the spring 505. When the ink droplet 401 is ejected from the hole, most of its substance is contained in the front of the ink droplet 401, and the maximum speed is also in the mass. The remaining trailing portion 403 contains a small amount of ink mass, and its velocity distribution is from nearly the same as the velocity of the head near the head of the ink droplet, to the velocity of the tail near the nozzle is smaller than the head of the ink droplet. In the range. Sometimes when ----- ^ —: ----- · -------- Order --------- line——V (Please read the precautions on the back before filling (This page)

553835553835

五、發明說明（經濟#智慧財產局員工消費合作社印製墨滴在移動時，其尾部的墨水在伸長至一點處即會與該墨滴斷開。部份餘留在該尾部的墨水會被拉回至列印頭的孔板107’其在該處通常會形成包圍著噴孔的墨漿。該等墨裝會造成後續墨滴的誤導方向而降低列印物的品質。該墨滴尾^的其部份會在該墨滴噴著於媒體之前被該墨滴頭部所吸收。最後，該墨滴尾部一些既未回到列印頭亦未被該 f滴所納入吸收的墨水，將會產生細微的霧化小滴而以任思方向散佈。某些該等霧滴會在列印時沾到該媒體上，將會在該等墨滴所形成的噴點處造成粗糙的邊緣，而在該媒體上產生不良霧點其會降低該列印的清晰度。該等不良的結果乃被示於第6圖的放大列印點中。其乃已被得知，該噴孔209對外部環境之出口面將會限制噴出的墨滴重量。亦已得知該凹凸曲面的回復力（在泫杈型中的常數K)係部份由該噴孔的邊緣區域所決定。因此，若要提高該凹凸曲面的穩定性，該等噴孔的側邊及開口應要製成儘可能地靠近在一起。當然，此將會與保持一定的墨滴重量之需求（其係由噴孔的出口面積來決定）形成矛盾衝突。一較大的凹凸曲面回復力乃可由非圓形孔來提供，其可使墨滴尾部更快並更接近孔板地斷開，故能形成較短的墨滴尾部而大量地減少霧點現象。某些可被用來減少霧點的非圓形噴孔係為細長孔隙而具有一主軸及一副軸，其中該主軸係比副軸具有較大尺寸 ’且該二軸皆平行於孔板的外表面。該等細長結構乃可為矩形及平行四邊形，或卵狀如橢圓及兩側平行的，，運動場，， --------------^ i — ί請先閱讀背面之注意事項再填寫本頁) 訂.- ί線. 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 11 553835V. Description of the Invention (Economic #Intellectual Property Bureau Employee Consumer Cooperative Co., Ltd. When the ink droplet is moved, the tail ink will be disconnected from the ink droplet when it is extended to a point. Some remaining ink on the tail will be removed. Pull back to the orifice plate 107 'of the print head, where it usually forms ink paste that surrounds the nozzles. These ink packs can cause misleading directions of subsequent drops and reduce the quality of the print. The tail of the drop Some of the ^ will be absorbed by the ink droplet head before the ink droplet is sprayed on the medium. Finally, some ink droplet tails are neither returned to the print head nor absorbed by the f droplet, Fine atomized droplets will be generated and spread in any direction. Some of these droplets will stick to the media during printing and will cause rough edges at the dots formed by the ink droplets. If a bad fog point is generated on the medium, it will reduce the sharpness of the print. These bad results are shown in the enlarged print dot in Figure 6. It has been known that the nozzle hole 209 pairs The exit surface of the external environment will limit the weight of the ink droplets ejected. The concave and convex surface has also been known The restoring force (constant K in the branch type) is determined in part by the edge area of the nozzle. Therefore, to improve the stability of the uneven surface, the sides and openings of the nozzle should be made. As close together as possible. Of course, this will conflict with the need to maintain a certain drop weight (which is determined by the area of the orifice of the nozzle). A large concave and convex surface restoring force can be non-circular Holes are provided, which can make the tail of the droplet break faster and closer to the orifice plate, so it can form a shorter tail of the droplet and greatly reduce the fog point phenomenon. Some non-circular can be used to reduce the fog point. The shaped nozzle is an elongated pore with a main axis and a secondary axis, wherein the main axis has a larger size than the secondary axis and the two axes are parallel to the outer surface of the orifice plate. The elongated structures can be rectangular and Parallelogram, or oval-shaped like ellipse and parallel on both sides, sports field, -------------- ^ i — Please read the precautions on the back before filling this page). -ί Line. This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) 11 553835

五、發明說明（9 ) (請先閱讀背面之注意事項再填寫本頁) 構造。使用容裝於型號HP51649A之列印匣（Hewlett· Packard公司所產銷）中的墨水，並使噴孔面積相等於該 HP51649A墨匣的孔隙面積時，將可得知該等具有2 : 1至5 :1之主副軸比的橢圓孔，係能獲致所需的曲面穩定性及較短尾部的墨滴噴射。第7Α·7Β圖為孔板外表面的平面圖，乃示出其不同形式的開孔尺寸。第7Α圖示出一圓孔其半徑為1，而其與噴墨室開口的半徑之差為r2。在該ΗΡ51649Α墨匣中，該r=17.5 微米而一微米。此將可在孔板外表面產生一個962微米2的噴孔面積（r2X;rp第7B圖乃示出一橢圓孔隙，其主副軸比為2 : 1，而為了保持相同的墨滴重量，該噴孔的面積亦應為962微米2。因此，由橢圓的面積公式（A=疋· & · b)乃可异出，就一 2 : 1軸比的橢圓而言，其主軸及副軸係分別為28·5微米及12.4微米。 --線· 經濟部智慧財產局員工消費合作社印製如上所建議，對較佳的尾部斷開及減少後續的霧點現象之主要有效因素，係為減少該橢圓副軸的尺寸。在軸比2 : 1至大約5 : 1的範圍内，將可見到霧點現象的減少。有一缺點亦在前已提及，係該橢圓的表面開口具有一對應的較大開口位於該孔板的内表面（即在噴墨室上）。當該等喷孔被間隔地緊密靠在一起以改善列印解析度時，該等内部開口將會互相重疊而形成干涉。此干涉會使要由一喷墨室噴出的墨水被吹入一相鄰的喷墨室中，並造成其他細微但有害的結果。 12 本紙張尺度適用中國國家標準（CNtS)A4規格（21〇 X 297公釐） 553835V. Description of the invention (9) (Please read the notes on the back before filling this page) Structure. When using the ink contained in the printing cartridge of model HP51649A (produced and sold by Hewlett Packard Company) and making the orifice area equal to the pore area of the HP51649A cartridge, it will be known that these have a ratio of 2: 1 to 5 The elliptical hole with the ratio of main axis to auxiliary axis of 1: 1 can achieve the required curved surface stability and shorter tail ink droplet ejection. Figures 7A and 7B are plan views of the outer surface of the orifice plate, showing the different sizes of openings. Fig. 7A shows a circular hole having a radius of 1 and a difference between the radius of the hole and the opening of the ink jet chamber is r2. In the HP51649A ink cartridge, r = 17.5 micrometers and one micrometer. This will produce an orifice area of 962 microns 2 on the outer surface of the orifice plate (r2X; rp. Figure 7B shows an elliptical pore with a main axis ratio of 2: 1, and in order to maintain the same drop weight, The area of the nozzle hole should also be 962 microns2. Therefore, the formula of the area of the ellipse (A = 疋 · & · b) is different. For an ellipse with an axis ratio of 2: 1, its principal axis and auxiliary axis are different. The shaft system is 28 · 5 microns and 12.4 microns, respectively.-The line · Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs as suggested above, is the main effective factor for better tail disconnection and reduction of subsequent fog spots. In order to reduce the size of the secondary axis of the ellipse, the reduction of the fog point phenomenon can be seen in the range of the axial ratio of 2: 1 to about 5: 1. One disadvantage is also mentioned earlier. The surface opening of the ellipse has a The corresponding larger opening is located on the inner surface of the orifice plate (ie on the inkjet chamber). When the orifices are closely spaced close together to improve print resolution, the internal openings will overlap each other and Form interference. This interference causes the ink to be ejected from an inkjet chamber to be blown into a phase Inkjet chamber and cause subtle but other harmful results. 12 paper scale applicable Chinese National Standards (CNtS) A4 size (21〇 X 297 mm) 553 835

經濟-部智慧財產局員工消費合作社印製為了解決此干涉的問題，該擴圓乃在主轴方向被加以變形，而大致形成-新月或四分之一月形。其仍保持該副軸尺寸，但有效的長軸會隨其新月形狀而縮短，但整體噴孔面積則維持固定。使用一新月狀的喷孔仍可繼續達到減少務點的效果。但是，該新月形狀又會將另一問題引入該種列印頭的列印品質中。即離開該孔板的墨滴喷徑不會垂直於該孔板表面，而係由該垂面朝著該喷孔曲面的反向半徑方向傾斜。為解決該新月狀噴孔的軌徑問題，有另種對稱的形狀乃被提供，其係疊合兩個新月形狀並使其彎緣互呈反向來形成。該形狀乃示於第8A圖中。此種修正的孔隙形狀係被稱為一 ”時漏，，形狀。在一實施例中，該修正的短軸卬^) 乃被设為26 // m，而長軸（aH)則69以m。形成該短軸之邊緣乃具有大約47以m的曲率半徑（rH)。此孔隙形狀將可保持窄小的副軸開口，而同時減少固定的孔隙面積所需之主軸尺寸。該主軸尺寸減少乃可比其它相同孔隙面積的橢圓形能更密集地間隔噴孔。又該時漏狀孔隙具有沿長軸及短轴的對稱性，故可減少墨滴執徑誤差的問題。此種由非圓狀孔隙所提供之優於傳統圓孔的改良，乃可相較第98與9a 圖而得知。第9B圖高度放大的字體係示出僅有甚少的額外墨滴’而在第9 A圖中則明顯可見為數甚多。現請參閱第8B圖，為了更能減少軌徑誤差，有一墨滴斷尾的可靠重點乃構建於一時漏狀噴孔中，該孔隙相對於該修正的短軸係呈不對稱的。該不對稱的時漏狀孔隙乃Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. In order to solve this interference problem, the expansion circle has been deformed in the main axis direction, and roughly formed a crescent or quarter-moon shape. It still maintains the size of the layshaft, but the effective long shaft will shorten with its crescent shape, but the overall nozzle area remains fixed. The use of a crescent-shaped nozzle can still achieve the effect of reducing work points. However, the crescent shape introduces another problem into the print quality of this type of print head. That is, the ink droplet ejection diameter leaving the orifice plate will not be perpendicular to the surface of the orifice plate, but will be inclined by the vertical surface toward the opposite radial direction of the curved surface of the orifice. In order to solve the problem of the orbital diameter of the crescent-shaped nozzle hole, another symmetrical shape is provided, which is formed by overlapping two crescent-shaped shapes and making their curved edges opposite to each other. This shape is shown in Figure 8A. The shape of this modified pore is referred to as "1", and the shape of the pore. In one embodiment, the minor axis of the modification 卬 ^) is set to 26 // m, and the major axis (aH) is 69 to m. The edge forming the minor axis has a radius of curvature (rH) of about 47 to m. This pore shape will maintain a narrow layshaft opening while reducing the major axis size required for a fixed pore area. The major axis size Reduction can be more densely spaced nozzles than other ovals with the same pore area. At this time, leaky pores have symmetry along the long axis and short axis, so the problem of ink droplet diameter error can be reduced. The improvement provided by round pores over traditional round pores can be seen in comparison to Figures 98 and 9a. The highly enlarged character system in Figure 9B shows only a few extra ink droplets, while in Figure 9 In Figure A, there are obviously many. Now refer to Figure 8B. In order to reduce the error of the orbital diameter, a reliable focus of the tail drop of an ink droplet is built in a leaky nozzle, which is relative to the modified The short-axis system is asymmetric.

本纸張尺度適用中國國家標準（CNS)A4規格（2】〇 x 297公釐） ^--------^---------線 (請先閱讀背面之注意事項再填寫本頁) 553835 A： ___B7__ 五、發明說明（11 ) 8B圖的孔隙803所示。該孔隙803的時漏形狀乃包含孔板外表面的孔隙各邊緣。在一較佳實施例中，該孔隙之周邊形狀係由具有一共同半徑中心點805及一共同半徑長度rc 之二弧段所形成，但其第一弧段807大於第二弧段809(反向於該第一弧段）。該孔隙803之時漏狀孔周邊亦包含二弧段811與813連接於弧段807與809的相鄰端點，而形成完整的孔隙803周界。該弧段813具有半徑rH1，而其半徑中心點815係位於該時漏周界之外，但在另一孔隙的突伸部§ 17 中，該孔隙係設在鄰近該噴墨室之孔板的另一内表面處。而弧段811亦具有一半徑rH2，及一半徑中心點819，位於孔板内表面的另一突伸部821中。此為本發明之一特徵，經濟部智慧財產局員工消費合作社印制< (請先閱讀背面之注意事項再填寫本頁) .線· 即該中心815係設在幾近於另一中心819的對應相反側，但並不完全地反向對稱。在一較佳實施例中，連接該中心8〇5 與815的直線，會與連接該中心8〇5與819的直線交會而形成一弧角0。該二直線之間所形成的弧角0乃可被調整〇。至20。的範圍内，而最好約5。。故，由電鍍所製成該孔隙803在外孔板面上具有一不對稱的時漏狀隙，而在内孔板面上具有一孔隙，包含兩個長弧段具有一共同的中心而被兩個突伸部所分開。該墨滴尾部最好是由該較窄端（即較短的弧部809)處斷掉，而形成一可靠的斷尾及噴霧部知。由各使用該等不對稱時漏形狀的孔隙噴出的墨滴將可得到一致的執徑。如前述所述，該孔板通常係在一心板上電鍍鎳或類似金屬’然後在該孔板上鍍以化學阻抗材料例如金等所製成本紙張尺度適用中國國家標準（CNS)A4規格（21() χ 297公爱）"—--— 553835 A7 B7 五、發明說明（l2 ) 。在以往，習知係使用一非導電鈕，其形狀為所要的最終結果：該圓形孔隙。但是，為了造成一時漏狀開孔，其已被得知一種形狀比該時漏造型更簡單的押紐乃可被使用。因為當電鍍該孔板時，其基本金屬會由一導電表面（包含其本身表面）沿各有效方向均勻地生成，該非導電鈕形狀的細微部份將會被逐漸生成的基本金屬所淡化模糊掉。同樣地，在該押鈕形狀中的細節會因該基本金屬的生成而被轉變成為一完全不同的形狀。再請參酌第1圖，其中該基本金屬107會生成而覆蓋該非導電的絕緣鈕ι〇5頂面。當由平面圖視之，該押鈕105的形狀細節將會被模糊掉或變成其它形狀’因為該基本金屬107會生成覆蓋該絕緣紅1〇5頂面上。已發現有一種分析技術，係使用一群具有相同於所要的基本金屬之生成直徑的圓圈，來置於該平面上並正切於所須開孔形狀的外廓線。當該圓圈之圓周上相反於切點並在同一直徑上的點，與該群圓圈之同樣的點互相連接之後，即可顯出該非導電鈕所要的形狀。另一種可擇的方式係由初始形狀之外廓線上的全部或代表數目的各點來劃出該等半徑之弧。各弧在半徑上的末端點（垂直於該初始廓線上之點的切線者）將會形成該孔隙形狀上的一爽，該形狀在電鍍程序之後即會完全形成。參考第1 〇圖將有助於想像使用該群圓圈的技術。在第10圖中，該孔隙的時漏形狀乃被標示為1001。有一群圓圈其半徑係等於基本金屬所要生成的半徑者，乃標本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）裝· I I (請先閱讀背面之注意事項再填寫本頁) ιδ]· · i線- 經濟部智慧財產局員工消費合作社印製 15 553835 經濟部智慧財產局員工消費合作社印？衣 Α7 Β7 五、發明說明（η ) 不為圓圈1003。非導電鈕的廓線乃如1005所示。該群圓圈之每一個圓圈係與該時漏形狀邊緣的每一點正切。將每一個圓圈上直接通過該切點直徑的點選出，並將其連接起來 ’即可得到該非導電鈕的形狀。若針對更複雜的孔隙形狀 ’已得知該非導電鈕的形狀不必相同於該孔隙的形狀。觀察該時漏形狀1001的邊緣，用來界定該形狀所須的圓圈數目乃可減少。第11圖乃示出造成該孔隙1001所需構建的圓圈，將在圓周上相反於切點的各點連接，即可得到產生所要之時漏狀開孔所需的最少押紐廓線。該等廓線形狀包含弧1 1 〇 1及 1103可產生主軸終端的邊緣，及拋物線部11〇5&η〇7可產生副軸終端的邊緣。只要該押鈕廓線的其餘部份不會比一圓的直徑更靠近該孔隙形狀，則藉電鍍一孔板所製成之該時漏狀孔’除了上述之弧及拋物線段外，乃與該押鈕的廓線無干。此等與廓線無干的現象乃被利用於本發明之一實施例中，俾提供一該孔板對阻隔材料之改良的黏著，並使該噴墨室可被設計成具有更大的墨水容量。第12圖乃示出一列印頭’其係當該非導電紐形狀有部份與該孔隙形狀無干時所製成者。該孔隙1001及押鈕1201形狀為清楚之故乃示為貫線，雖該噴孔11 〇 1係位於孔板的外表面，而該押鈕係位於孔板的内表面。當人們由該噴墨室開始而通過該孔板表面的開孔來看該孔隙時，該孔隙會由該押紅1 2〇 1形狀變成時漏狀孔1001。在此實施例中，該阻擋層材料的形狀係以：^ ^--------^--------- (請先閱讀背面之注意事項再填寫本頁)This paper size applies to China National Standard (CNS) A4 specifications (2) 0x297 mm. ^ -------- ^ --------- line (please read the precautions on the back first) (Fill in this page again) 553835 A: ___B7__ 5. Description of the invention (11) The hole 803 in Figure 8B is shown. The time-lapse shape of the pores 803 includes the edges of the pores on the outer surface of the orifice plate. In a preferred embodiment, the perimeter shape of the pore is formed by two arc segments having a common radius center point 805 and a common radius length rc, but its first arc segment 807 is larger than the second arc segment 809 (reverse Towards the first arc). At the time of the pore 803, the periphery of the leaky hole also includes two arc segments 811 and 813 connected to adjacent endpoints of the arc segments 807 and 809 to form a complete perimeter of the pore 803. The arc segment 813 has a radius rH1, and the center point 815 of the radius is outside the perimeter of the leak, but in the protrusion § 17 of another aperture, the aperture is provided in the orifice plate adjacent to the inkjet chamber. At the other inner surface. The arc segment 811 also has a radius rH2 and a radius center point 819, which is located in another protrusion 821 on the inner surface of the orifice plate. This is a feature of the present invention, printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs (please read the precautions on the back before filling out this page). Line · That this center 815 is located near another center 819 Corresponds to the opposite side, but is not completely reverse symmetric. In a preferred embodiment, a straight line connecting the centers 805 and 815 meets a straight line connecting the centers 805 and 819 to form an arc angle 0. The arc angle 0 formed between the two straight lines can be adjusted. To 20. Range, and preferably about 5. . Therefore, the pore 803 made by electroplating has an asymmetrical time-lapse gap on the outer orifice plate surface, and an pore on the inner orifice plate surface, including two long arc segments with a common center and two The protrusions are separated. The tail portion of the ink droplet is preferably broken off at the narrower end (i.e., the shorter arc portion 809) to form a reliable tail breaking and spraying portion. Ink droplets ejected from each of the asymmetrical leaky-shaped pores can obtain a uniform diameter. As mentioned above, the orifice plate is usually plated with nickel or similar metal on a core plate, and then the orifice plate is plated with a chemical resistance material such as gold. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (21 () χ 297 public love) " ---- 553835 A7 B7 V. Description of the invention (l2). In the past, the conventional system used a non-conductive button, the shape of which was the desired end result: the circular aperture. However, in order to create a leaky opening, it has been known that a button having a simpler shape than the leaky shape can be used. Because when the orifice plate is plated, its base metal will be uniformly generated from a conductive surface (including its own surface) in each effective direction, the fine parts of the shape of the non-conductive button will be faded and blurred by the gradually generated base metal. . Similarly, the details in the shape of the button are transformed into a completely different shape due to the generation of the base metal. Please refer to FIG. 1 again, in which the base metal 107 is formed to cover the top surface of the non-conductive insulating button ι05. When viewed from the plan view, the details of the shape of the button 105 will be blurred or changed into other shapes' because the base metal 107 will cover the top surface of the insulating red 105. An analytical technique has been found that uses a group of circles having the same diameter as the desired base metal to produce, placed on this plane and tangent to the contour of the desired opening shape. When the circumference of the circle is opposite to the tangent point and on the same diameter, and the same points as the circles are connected to each other, the desired shape of the non-conductive button can be displayed. Another alternative is to draw arcs of these radii from all or a representative number of points on the contour outside the initial shape. The end point of each arc on the radius (the tangent perpendicular to the point on the initial profile) will form a refresh in the shape of the pore, which will be completely formed after the plating process. Reference to Figure 10 will help to imagine the technique of using this group of circles. In Figure 10, the hourglass shape of the pore is designated as 1001. There is a group of circles whose radius is equal to the radius to be generated by the base metal. The paper size of the specimen applies the Chinese National Standard (CNS) A4 (210 X 297 mm). Packing II (Please read the precautions on the back before filling this page ) ιδ] · · i-line-Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 15 553835 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs?衣 A7 Β7 5. The description of the invention (η) is not a circle 1003. The outline of the non-conductive button is shown as 1005. Each circle of the group of circles is tangent to each point of the edge of the hourglass shape. The shape of the non-conductive button can be obtained by selecting points on each circle directly passing through the diameter of the tangent point and connecting them. If it is known that the shape of the non-conductive button is not the same as the shape of the pore for a more complicated pore shape. By observing the edges of the hourly shape 1001, the number of circles required to define the shape can be reduced. Figure 11 shows the circle required to construct the pore 1001, and the points on the circumference opposite to the tangent point are connected to obtain the minimum bond profile required to produce the leaky opening at the desired time. These contour shapes include the edges of the arcs 1 101 and 1103 that can produce the major axis ends, and the parabolic portion 1105 & η07 that can produce the edges of the minor axis ends. As long as the rest of the button profile is not closer to the pore shape than the diameter of a circle, the then leaky hole 'made by electroplating a perforated plate' is in addition to the arc and parabola segments described above. The profile of the button is dry. This phenomenon of non-drying of the profile is used in one embodiment of the present invention, and provides an improved adhesion of the orifice plate to the barrier material, and enables the inkjet chamber to be designed to have a larger ink. capacity. Fig. 12 is a diagram showing a print head 'made when a part of the non-conductive button shape does not dry with the pore shape. The shapes of the aperture 1001 and the button 1201 are shown as continuous lines, although the nozzle hole 101 is located on the outer surface of the orifice plate, and the button is located on the inner surface of the orifice plate. When people start to look at the pores through the openings on the surface of the orifice plate starting from the inkjet chamber, the pores will change from the shape of the pressed red 1201 to a leaky hole 1001. In this embodiment, the shape of the barrier material is: ^ ^ -------- ^ --------- (Please read the precautions on the back before filling this page)

553835 A7 B7 五、發明說明（) 虛線示出。有一阻擋材料島1203會將該噴墨室1205的墨水進口分成兩個饋墨道1207、1209，而該噴墨室1205的其餘部份係由阻擋材料壁1211、1213、1215等所形成。在該阻擋層材料與孔板之間所增加的接觸面積，係為在阻擋材料島1203周圍的區域（並另以虛線表示想像的圓形押鈕廓線）。此增加的接觸面積，係由於將本為圓形的押鈕部份形成方形，而能更匹配該阻擋材料的方形佈設，並在基片上提供一矩形載面，其即使在發生孔板校準失誤時亦不會改變。且，該方形的設計將可在該噴墨室中提供更多的墨水容積。故，本發明乃利用一不對稱的時漏狀孔隙，而能使噴出的墨滴減少霧點現象，並改善墨滴的噴塗執徑者。 --------------裝--- (請先閱讀背面之注意事項再填寫本頁) 訂：線經濟#智慧財產局員工消費合作社印製本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 553835 A7 B7 五、發明說明（15 ) 經濟部智慧財產局員工消費合作社印製 101· •基片 103· •導電層 105· •絕緣鈕（介電層） 107· •孔板 201· •薄膜電阻器 203· •半導體基片 205· •阻擋材料 207· •噴墨室 209· •噴孔 213· •外表面 301· •饋墨道 401· •墨滴 403· •尾部 501· •塊體 503· •固定結構 505· •彈簧 507· •緩衝裝置元件標號對照 803…孔隙 805,815,819…半徑中心點 8 0 7…第一弧段 809…第二弧段 811、813…弧段 817，82卜··突伸部 1001…孔隙 1003…圓圈 1005···非導電鈕 1101…噴孔 1101，1103 …弧 1105，1107…拋物線部 1201…絕緣紐 1203…阻擋材料島 1205···噴墨室 1207，1209…饋墨道 1211，1213，1215···阻擋材料壁本紙張尺度適用巾@ @家縣（CNS)A4規格⑵G x 297公釐了 18 ΓΗ先閱tt背¾V注意事項再填tr本I) ------— 廣訂----I--!線.553835 A7 B7 V. Description of the invention () The dotted line is shown. A barrier material island 1203 divides the ink inlet of the inkjet chamber 1205 into two ink feed channels 1207, 1209, and the rest of the inkjet chamber 1205 is formed by barrier material walls 1211, 1213, 1215, and the like. The increased contact area between the barrier layer material and the orifice plate is the area around the barrier material island 1203 (and the imaginary circular button profile is indicated by a dashed line). The increased contact area is due to the formation of the square button part which is circular, which can better match the square layout of the barrier material, and provides a rectangular loading surface on the substrate, even when the orifice plate calibration error occurs. It will not change. Moreover, the square design will provide more ink volume in the inkjet chamber. Therefore, the present invention makes use of an asymmetrical time-leakage pore, which can reduce the fog point phenomenon of the ejected ink droplets and improve the spraying diameter of the ink droplets. -------------- Install --- (Please read the precautions on the back before filling out this page) Order: 线经济 # Printed by the Intellectual Property Bureau Staff Consumer Cooperatives This paper is applicable to China Standard (CNS) A4 specification (210 X 297 mm) 553835 A7 B7 V. Description of invention (15) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 101 · • Substrate 103 · • Conductive layer 105 · • Insulating button (Medium (Electrical layer) 107 · • orifice plate 201 · • thin film resistor 203 · • semiconductor substrate 205 · • barrier material 207 · • inkjet chamber 209 · • spray hole 213 · • outer surface 301 · • ink feed channel 401 · • Ink drop 403 · • tail 501 · • block 503 · • fixed structure 505 · • spring 507 · • reference number of buffer device 803… aperture 805,815,819… radius center point 8 0 7… first arc segment 809… second arc segment 811, 813 ... Arc segments 817, 82 Bu ... Projection 1001 ... Pore 1003 ... Circle 1005 ... Non-conductive button 1101 ... Nozzle 1101, 1103 ... Arc 1105, 1107 ... Parabolic part 1201 ... Insulation button 1203 ... Block Material island 1205 ... Inkjet chambers 1207, 1209 ... Ink channel 1211 1213, 1215 ... barrier material wall paper size applicable towel @ @ 家县（CNS) A4 sizeAG x 297 mm 18 ΓΗPlease read tt back ¾V precautions before filling tr this I) ------ — Broad order ---- I--! Line.

Claims

申明專利範圍第89110975號專利申請案申請專利範圍修本91年12月30曰 -種喷墨印表機之列印頭，具有噴出墨滴的開孔，乃包一噴墨器；及孔板（107)，其具有一開孔，該開孔係由該孔板相對於該噴墨器的第—表面延伸貫穿該孔板，而至該孔 :之大致平仃於該第一表面的一第二表面，該開孔在該第二表面具有一孔隙（8〇3)，在該開孔之該第二表面内的該孔隙係由下列所構成：至少二相交的邊緣，其係形成該孔隙的周界，一第一邊緣，其包含一具有第一半徑 (rC)的第一弧段（807)與一位於該孔隙之周界内的第一中心(805) ’ 一第二邊緣，其包含一具有第二半徑(如) 的第二弧段（813)與一位於該孔隙之周界外的第二中心 (815)，以及一第三邊緣，其包含一具有第三半捏的第二弧段（8 11)與一位於該孔隙之周界外並與該第二中心相分離開來的第三中心（8丨9)。如申請專利範圍第1項之列印頭，更包含一第四邊緣，其包含一具有该第一半徑的第四孤段（8〇9)及該第一中心（805)。如申請專利範圍第1項之列印頭，其中連接該第一中心與第二中心之一第一直線，會與連接第一中心與第三中心之一第二直線形成一銳角，該銳角係在〇。至2〇〇的範圍内。一種操作一噴墨印表機之列印頭的方法，該列印頭具有 553835 Λ BCD 六、申請專利範圍可喷出墨滴的開孔；該方法包含以下步驟·· 使一墨滴賦具一速度；及將該墨滴由一開孔噴出，該開孔包含一設在一孔板 (1〇7)之表面上的孔隙（803)，在該表面内之該孔隙係由下列所構成：至少二相交的邊緣，其係形成該孔隙的周界，一第一邊緣，其包含一具有第一半徑（rc)的第一弧段（807)與一位於該孔隙之周界内的第一中心（8〇5), 一第二邊緣，其包含一具有第二半徑(Γηι)的第二弧段 (813)與一位於該孔隙之周界外的第二中心（μ 5)，以及 -第三邊緣，其包含一具有第三半徑(rH2)的第三弧段 (811)與一位於該孔隙之周界外並與該第二中心相分離開來的第三中心（819)。 5· —種製造噴墨印表機之列印頭的方法，包含以下步驟·· 製成一孔板（107)，其具有一第一表面與一大致平行於名第一表面的第二表面，及至少一開孔，其係由第一表面延伸至第二表面而貫穿該孔板，該開孔含有一位於該第二表面上之孔隙（8〇3)，其係由下列所構成：至少二相交的邊緣，其係形成該孔隙的周界，一第一邊緣，其包含一具有第一半徑（rc)的第一弧段（807)與一位於該孔隙之周界内的第一中心（8〇5)，一第二邊緣，其包含一具有第二半徑（rH1)的第二弧段（813)與一位於該孔隙之周界外的第二中心（815)及一第三邊緣，其包含一具有第三半徑（γη2)的第三弧段（811)與一位於該孔隙之周界外並與该第二中心相分離開來的第三中心（$ 19);Declaration of Patent Scope No. 89110975 Patent Application Application Patent Scope Revised December 30, 91-Print head of an inkjet printer, which has openings for ejecting ink droplets, is an inkjet device; and an orifice plate (107), which has an opening, which extends from the first surface of the orifice plate with respect to the inkjet through the orifice plate to the hole: The second surface, the opening has a pore (803) on the second surface, and the pore in the second surface of the opening is composed of at least two intersecting edges that form the The perimeter of the pore, a first edge, which includes a first arc segment (807) with a first radius (rC) and a first center (805) 'located within the perimeter of the pore, a second edge, It includes a second arc segment (813) having a second radius (e.g.), a second center (815) located outside the perimeter of the pore, and a third edge including a first arc segment having a third half pinch. The second arc segment (8 11) and a third center (8 丨 9) located outside the perimeter of the pore and separated from the second center. For example, the print head of the first patent application scope further includes a fourth edge, which includes a fourth isolated segment (809) having the first radius and the first center (805). For example, the print head of the first patent application range, wherein a first straight line connecting the first center and the second center forms an acute angle with a second straight line connecting the first center and the third center, and the acute angle is at 〇. Within the range of 200. A method for operating a print head of an inkjet printer, the print head having 553835 Λ BCD 6. Patent application scope for opening ink droplets; the method includes the following steps: A speed; and ejecting the ink droplet from an opening including an aperture (803) provided on a surface of an orifice plate (107), the aperture in the surface being composed of : At least two intersecting edges that form the perimeter of the pore, a first edge that includes a first arc segment (807) with a first radius (rc) and a first perimeter within the perimeter of the pore A center (805), a second edge including a second arc segment (813) having a second radius (Γηι) and a second center (μ 5) located outside the perimeter of the pore, and- The third edge includes a third arc segment (811) having a third radius (rH2) and a third center (819) located outside the perimeter of the pore and separated from the second center. 5 · —A method for manufacturing a print head of an inkjet printer, including the following steps. · An orifice plate (107) is formed, which has a first surface and a second surface substantially parallel to the first surface. And at least one opening, which extends from the first surface to the second surface and penetrates the orifice plate, the opening contains an aperture (803) on the second surface, which is composed of the following: At least two intersecting edges form the perimeter of the pore, and a first edge includes a first arc segment (807) having a first radius (rc) and a first perimeter within the perimeter of the pore. Center (805), a second edge, which includes a second arc segment (813) having a second radius (rH1), a second center (815) located outside the perimeter of the pore, and a third edge , Which includes a third arc segment (811) having a third radius (γη2) and a third center ($ 19) located outside the perimeter of the pore and separated from the second center;

20 553835 A8 B8 C820 553835 A8 B8 C8

六、申請專利範圍及汉置一喷墨裔於該孔板的第一表面，俾使墨水可由該至少一開孔的孔隙中喷出。 6. 如申請專利範圍第5項之方法，其中該製造孔板的步驟更包含使該孔隙周界含括一第四邊緣，其係由具有該第一半徑之第四弧段與該第一中心所形成者。、^6. Scope of Patent Application and A Chinese inkjet is placed on the first surface of the orifice plate, so that the ink can be ejected from the at least one open hole. 6. The method of claim 5 in the patent application, wherein the step of manufacturing the orifice plate further includes a fourth edge of the perimeter of the pore, which is formed by a fourth arc segment having the first radius and the first Formed by the center. , ^

裝 7. 如申請專利範圍第6項之方法，其中製造第一、第二、第三、第四弧段的步驟更包含將該第_、 ^ 乐一》、第二中心設定成，使連接第一中心與第二中 < 一第一直線，與連接第一中心與第三中心之一第二直線形成一銳角，而該銳角係在0°至20°的範圍内。訂丨; Φ 本紙張&度適用巾目國家標準（CNS) Α4規格（210X297公6 " ------------------- -21 ,7. If the method of claim 6 of the scope of patent application, the steps of manufacturing the first, second, third, and fourth arc segments further include setting the first, second, and first centers to make the connection The first center and the second center < a first straight line, and an acute angle formed with a second straight line connecting the first center and the third center, and the acute angle is in a range of 0 ° to 20 °. Order 丨; Φ This paper & degree is applicable to the national standard (CNS) Α4 specification (210X297 male 6 " ------------------- -21,