M328950 八、新型說明： 【新型所屬之技術領域】 本新型涉及一種給印表機的打印頭提供墨源的供墨裝置。 【先前技術】 本申請人在先一份中華人民共和國專利申請號爲2〇〇62〇〇〇3627.3 ，的噴墨印表機墨盒與其他類似的無吸附材料墨盒一樣，解決了有吸附M328950 VIII. New description: [New technical field] The present invention relates to an ink supply device for supplying an ink source to a print head of a printer. [Prior Art] The applicant's first patent application number of the People's Republic of China is 2〇〇62〇〇〇3627.3, and the inkjet printer cartridge is the same as other similar non-adsorbent ink cartridges.
φ 一一 · mw1丹W伏澄明即阀，文解決了同類型墨盒内的 ^墨壓力機構結構複雜、難_證產品質量且製造成本較高等難 >€ 由於墨息内的進氣调節閥由閥芯、閥座、閥蓋構成一個可獨 立裝配的咖部件式’ _封蓋軌口_狀贴位置固定、彈性一 致而使常閉式閥門處於穩定可靠的工作壓力狀態，從腿卜古,以φ一一· mw1 Dan W volts is the valve, which solves the complicated structure of the ink pressure mechanism in the same type of ink cartridge, difficult to prove product quality and high manufacturing cost, etc. The valve consists of a valve core, a valve seat and a valve cover, which can be independently assembled. The _ cap rail _ position is fixed and the elasticity is uniform, so that the normally closed valve is in a stable and reliable working pressure state. To
墨口、，由於安裝時打印墨針須首先刺穿薄膜片 ^ 乂及安錢不規則的薄則孔口破裂邊易被出 密封孔内而使密封不可靠。 ，導致安裝阻力較 墨針帶進密封圈的 【新型内容】 本新型的目的就是改 盒出墨口的密封可靠性， 進墨盒出墨口的密封結構，確保裝卸前後墨 降低墨盒安裝阻力。 M328950 本新型疋14樣實賴：在由儲墨腔、供墨調_、進氣調節閥、 出墨:密封塞組墨盒中，儲墨腔由盒體與盒料組成；供墨調節 閥由薄膜封閉的閥體等構成—個可獨立裝配的部件，轉墨腔出墨口 (即墨盒出墨口）相聯接。閥體上有兩個以上小墨腔，小墨腔之間由小 、、、、'連（至^個小墨腔晨裝有過濾網。供墨調節閥進墨口伸入 儲墨腔底面上最低的凹部；進氣·閥爲侧式，由帽狀彈性闕怒、 二通式^座以及通孔式閥歸成—個可獨立裝_部件，與儲墨腔進 :二Z^封塞由密封圈、内塞組成—個可獨立裝配的部 柱表面内。密封圈採用彈性材料製造成圓盤狀，外圓 腔::：=Γ小截面的密封環’兩端面，央分別帶錢腔 刀邊甕月工王肚大口小的圓形甕狀，甕腔口内外側 較大的圓錐孔面。切縫經薄刀切刀沖切加工而成， =錐角 貫穿端面，與甕腔連通。内塞採用愈H 逢’軸向 «好取繼辦㈣ 當將内塞從密封圈他幾 讀基部件。當將該部件裝入墨盒出墨口内後，通過利用7成出墨σ =壓焊心简㈣鐵來_=== 改進後的墨盒出墨口密士 ==’故在降低墨盒出墨口安裝阻力的二在二外 ’“出*主與打印頭出墨針之間連接的密封可靠性。蛛尚了 【實施方式】 M328950 如圖1〜4所示，墨盒由盒體3、盒蓋4、供墨調節閥2、進氣調節 門1出墨口捃封基25等零部件組成，供墨調節閥2由閥體11、過濾、 、·周7及4後面薄膜片12、丨3組成一個可獨立裝配的部件，以過盈配合 的方式插裂於盒體3的出墨口 14的上端孔内。供墨調節閥前後面薄膜 片12 13使閥體上的兩個以上的通孔形成小墨腔5,使閥體隔壁上的 凹槽形成細長孔結構的小墨道6，並成爲閥内的阻尼孔，閥體11内各 小墨腔5之間以雙墨道6相串連，確保閥内墨水運動的流暢和連續性口， i少-個小墨腔5裏裝有過濾網7。供墨調節閥2下方爲細長孔結構 、、進主15與口控較大的出墨口 16，進墨口 15伸入盒體儲墨腔底部 的凹坑内，以便充分汲取儲墨腔内的墨水22。出墨口 ι6與墨盒出墨 口 14相通。以上結構適當且有效地控制了閥内墨水22❸流量及壓力t a進氣調節閥1由閥芯8、閥座9、閥蓋1〇組成一個可獨立裝配的 $件’與盒蓋4的進氣口 17相連通。圓柱狀閥座9爲三通式結構，閥 =8被通孔式閥蓋1()固定於閥座9下端大孔内，它採用具有彈性的石夕 膠材料製f成頂面有凸台的帽狀，依靠頂面的雜壓封於難9下端 大孔連通㈣/]'孔的通氣^端面，形成可靈活開刺詞式闕門。 株^ 口擒封基25由密封圈21、内塞24組成一個可獨立裝配的部 二衣於墨盒出墨σ 14的下端孔内。密封圈21 _彈財膠材料 面盤Ϊ，外81柱面帶有一亂細小半圓形截面的密封環，兩端端 、》科錢腔、切縫，甕腔呈肚大口小的圓形甍狀，甕腔口内 側表面均爲錐角較大的圓錐孔面。切縫經薄刀切刀沖切加 縫:轴向貫穿端面，與堯腔連通(如圖4所示)。切縫在 而王 字形（如圖3所示），間隙值非常小，幾乎接近雯，去 被外力_時處於自_合形式的“自封”狀態猶24 _與盒體 7 M328950 材料致的塑膠製造成簡單的剛性實心球體。密封圈與内塞％在 衣入墨I出墨σ 14之&組裝成密封塞部件25，組裝時，由於内塞％爲 球形’故絲配方触要求，可_塞以㈣方減韻圈甕腔口擠 壓入甕腔肚β ’並依靠堯腔口的彈性收縮固定在變腔肚内，如圖4所 不，t腔口 _錐孔面、甕腔肚底關時與内塞24接觸，形成密封塞 25可靠的内圈密封。密封塞25裝入墨盒出墨口 14後，密封圈21外 ^柱^上的密封環緊密壓縮在墨盒出4 口相配合的内孔壁上，形成 =封塞25可靠的外圈密封。上述内外圈密封，全面且可靠地滿足了墨 I出墨σ 14未安^至打印頭出墨針19上時的氣密賊封要求。而利 用塑膠的熱塑性通過熱壓焊出墨口 14外端面使之成型爲如圖丨〜2所示 的孔口凸緣20，又可靠地實現了密封塞25在墨盒出墨口⑷目配合處 的軸向固定。 墨盒女裝則，先撕去焊接於進氣口 17外開口端面上的塑膠薄膜 片，使進氣π打開。安裝過程中，打印頭出墨針19首先插進密封圈 21下端面切縫内，接著頂到内塞24下表面，並使内塞逐漸克服密封 圈上端面甕腔叫約束力，麟密封圈，最終停留於其頂端。由於内 塞24爲剛性球形表面，與出墨針19頂端圓錐形表面只能構成點接觸 形式，接辦最多只會部分地遮蓋分佈在錐形表面上的若干出墨小孔 中的-個’而不可能全部遮蓋，故翻的内塞24不會堵塞出墨針Μ。 女裝結束後，密封圈21甕腔π彈性地緊密地收縮在出墨針19外圓柱 表面上’從而爲墨盒出墨口與打印頭出墨針19之間的連接構成可靠的 氣密性密封。 圖1即表示墨盒已被安裝到印表機出墨針19上時的情形。打印頭 处於非工作狀態時，墨纽氣調_丨的_處於常閉狀態，墨盒内 M328950 外作用，闕門上的各力處於靜力平衡狀態，儲墨腔i8内的壓力略低於 外界大亂壓力而保持適當的微負壓狀態，墨水處於靜平衡，不會經 印頭出墨針19向外漏失。 、當打印頭工作時，來自打印頭的吸力，首先使墨盒出墨口 14内形 成相對^的低壓區，低壓區迅速依次擴展到供墨調節閥2内、儲墨腔Μ 、内後表面對稱焊接的兩張薄膜片12、13同時産生向内凹曲 if象’閥内容積減少，壓力增加，部分财墨水流向墨盒出墨口 Μ， f此此時墨流流量會適當增加。#低壓區擴展到儲墨腔18時，進氣調 •即閥1閥門的靜力平衡狀態被打破，閥外較高的大氣壓力就會克服閥 芯=面的彎曲變形彈力等阻力，開啓閥門，外界空氣經閥座9上腔室、 Z心8凸*上端面進人儲墨腔18，此賴門酬合壓力下降至零，閥 芯頂,曲變形程度隨著儲墨腔18内負壓的增加而增加，而同時閥芯 頁面彈力也因弓曲變形程度增力口而增力口，由於該彈力方向與變形方向 相反狀、疋反抗著變形程度的增加，也就是說總是反抗著闕門的開 啓’結果使閥門處於動態平衡狀態，使儲墨腔18内的壓力始終保持 • Ϊ比閥]開赠稍高但低於外界大氣壓力的水平上。進氣調節閥就是 這樣動心地凋節控制儲墨腔内的壓力在較恒定的值上。故當閥門開啓 後儲墨I内墨水壓力會適當升高，從而使墨盒内出現從儲墨腔到供 土、调節閥，然、後到墨盒出墨口，最後進入打印頭出墨針的墨流方向。 具有變截面墨流通道的供墨調節閥對通過其内的墨流流量及壓力進一 步進行合理調控。 "打印頭停止工作時，供墨調節閥2前後面薄膜片内凹現象隨吸力 肩失而收縮重定，閥内容積增加，壓力減小，閥内墨水停止外流，且 有小量閥外墨水分概關進墨口與出墨口流人咖，直至閥内外墨 9 M328950 水壓力平衡，適量的墨水被蓄於供墨調節閥内。同時，進氣調節閥閥 門恢復常閉狀態，墨盒内恢復微負壓狀態，墨水建立新的靜平衡狀態。 如上所述，墨盒依靠供墨調節閥内特定結構型式的墨流通道對墨 流流量及壓力的調節作用、調__频似於多孔性海綿體的拉; -收縮變轉墨流的微調侧，以及料〗式進義_對儲墨腔内負 壓波動幅度的控制，適時且輕地調控了流向打印頭出墨針^流流 #量及壓力。 當墨盡更換或中途更換墨盒時，從打印頭出墨針上拔出墨盒後， 密封圈21因受孔口凸緣2G的轴向固定約束而保留於墨盒出黑口 14 内’與出墨針19脫離接觸，密封圈下端面原被出墨針撑開的切^由於 =恢復及出4口内孔表面的徑向壓力而收縮彌合成被樓開前的缝隙 狀恶，由於缝隙值非常小，幾乎接近零，實際處於自相彌合形式的‘‘自 防漏性密封效果，無論拔出的 I㈣可有效地阻止盒内剩餘墨水向外滲漏。此外，由於剛 出=盒-般鱗於^所示的豎直向上方位，故 内錢麵水的比重大而克服墨水浮力下 外側的_孔内，如圖2所示，在相接觸處形成_封= 步增強剛從機内拔㈣墨盒出墨口的防漏性密封程度Γ & 另外’當印表機顯示墨各黑者 . 入墨孔密封塞23，添加墨7；：；；^=缝印表細取出，拔出 内仍可繼續使用。從而可實圈=*仏23後’再裝入印表機 【圖式簡單制】 ^棚制、延長墨盒使輯命的目的。 圖1是墨盒已安裝在打印頭_時的縱向剖視圖； 10 M328950 圖2是圖1所示墨盒出墨口部位已拔離打印頭出墨針時的局部放大圖; 圖3是出墨口密封塞的仰視放大圖； 圖4是圖3沿C-C方向的剖視圖。 【主要元件符號說明】 1 一進氣調節閥 2 —供墨調節閥 3 —盒體 4 一盒蓋 5 —小墨腔 6 田 Ά 一墨迢 7 -過濾網 8 一閥忍 9 - -閥座 10 一閥蓋 11 一閥體 12 一薄膜片 13 一薄膜片 14 一墨盒出 15 一進墨口 16 一出墨口 17 一進氣口 18 一儲墨腔 19 一出墨針 11 M328950 20 —孔口凸緣 21 —密封圈 22 一墨水 23 一密封塞 24 —内塞 25 一出墨口密封塞The ink port, because the ink needle is printed at the time of installation, must first pierce the film sheet. 乂 and the irregular thickness of the hole, the rupture edge of the hole is easily released into the sealing hole and the sealing is unreliable. The installation resistance is higher than that of the ink needle into the sealing ring. [New content] The purpose of the novel is to improve the sealing reliability of the ink outlet of the cartridge, and the sealing structure of the ink inlet of the ink cartridge to ensure that the ink is lowered before and after loading and unloading. M328950 This new type of 疋14 is based on: in the ink storage chamber, ink supply adjustment _, intake control valve, ink discharge: sealing plug group ink cartridge, the ink storage chamber is composed of the box body and the box material; the ink supply regulating valve is composed of The valve body and the like which are closed by the film constitute a separately assembled component, and the ink outlet of the ink transfer chamber (ie, the ink outlet of the ink cartridge) is coupled. There are more than two small ink chambers on the valve body, and the small ink chambers are connected by small, , and 'connected (to a small ink chamber in the morning with a filter mesh. The ink supply regulating valve inlet extends into the bottom surface of the ink storage chamber) The lowest concave part; the intake valve is side-type, which is composed of cap-shaped elastic anger, two-type seat and through-hole valve - one can be installed separately, and the ink storage chamber is: two Z^ seal The plug consists of a sealing ring and a inner plug—the surface of the column that can be assembled independently. The sealing ring is made of elastic material and is made into a disc shape, and the outer circular cavity:::=ΓSmall cross-section of the sealing ring' The pocket of the moon is a small round shape with a large mouth and a large conical hole surface inside and outside the mouth of the cavity. The slit is punched and cut by a thin knife cutter, and the cone angle runs through the end face and the cavity. Connected. The inner plug adopts the more H. 'Axis «Good to take back (4) When the inner plug is read from the sealing ring, he reads the base part. When the part is loaded into the ink outlet of the ink cartridge, the ink is slid by using 70%. Pressure welding heart simple (four) iron to _=== improved ink cartridge ink outlet mouth == 'thus in the reduction of the ink cartridge outlet installation resistance of the two in the second 'out' main * print head Sealing reliability of the connection between the ink needles. [Embodiment] M328950 As shown in Figures 1 to 4, the ink cartridge is provided by the cartridge 3, the lid 4, the ink supply regulating valve 2, and the air inlet adjusting port 1 The sealing unit 25 is composed of components such as a sealing base 25, and the ink supply regulating valve 2 is composed of a valve body 11, a filter, a film 7 and a rear film sheet 12, and a rear part of the film, and an independent assembly member, which is inserted in an interference fit manner. In the upper end hole of the ink outlet 14 of the casing 3. The front and rear film sheets 12 13 of the ink supply regulating valve form two or more through holes on the valve body to form a small ink chamber 5, so that grooves on the wall of the valve body are formed. The small ink path 6 of the elongated hole structure is a damping hole in the valve, and the small ink chambers 5 in the valve body 11 are connected in series by the double ink path 6 to ensure the smooth and continuous mouth movement of the ink in the valve, i There is a small filter chamber 5 with a filter screen 7. The ink supply regulating valve 2 has an elongated hole structure, a main inlet 15 and a large mouth-controlled ink outlet port 16, and the ink inlet port 15 extends into the cartridge body for ink storage. The inside of the cavity is recessed in the cavity to fully capture the ink 22 in the ink storage chamber. The ink outlet port ι6 communicates with the ink outlet port 14. The above structure is properly and effectively controlled. The inner ink 22 ❸ flow rate and pressure ta intake valve 1 is composed of a valve core 8, a valve seat 9, and a valve cover 1 〇, and an independently assembled $ piece ' communicates with the air inlet 17 of the cover 4. The cylindrical seat 9 is a three-way structure, and the valve=8 is fixed in the large hole at the lower end of the valve seat 9 by the through-hole valve cover 1 (), and is made of a resilient stone-like material to form a hat having a top surface and a boss. Relying on the top surface of the miscellaneous pressure seal at the lower end of the difficult 9, the large hole communicates with the (4)/]' hole of the ventilation end face, forming a flexible punctuation type. The strain is composed of a sealing ring 21 and an inner plug 24. A separately assembled part of the second garment is placed in the lower end hole of the ink cartridge σ 14 of the ink cartridge. The sealing ring 21 _ the elastic rubber material surface plate Ϊ, the outer 81 cylinder surface has a small semicircular cross section sealing ring, both ends , "The money cavity, the slit, the cavity is a small round shape with a big belly, and the inner surface of the cavity is a conical surface with a large cone angle. The slit is punched and cut by a thin knife cutter: the axial end penetrates the end face and communicates with the cavity (as shown in Fig. 4). The slit is in the shape of a chevron (as shown in Figure 3). The gap value is very small, almost close to Wen, and it is in the self-sealing state of the self-sealing state when it is subjected to external force _ 24 _ with the plastic body of the box 7 M328950 material Made into a simple rigid solid sphere. The sealing ring and the inner plug % are assembled into the sealing plug member 25 in the ink-injecting ink σ 14 of the garment. When assembled, since the inner plug% is spherical, the formula of the silk is required to be touched, and the shackle can be replaced by (four) square rhyme. The cavity is squeezed into the belly cavity β' and is fixed in the cavity of the cavity by the elastic contraction of the mouth of the fistula. As shown in Fig. 4, the cavity of the t-port and the surface of the cavity are in contact with the inner plug 24 when closed. Forming a reliable inner ring seal of the sealing plug 25. After the sealing plug 25 is inserted into the ink outlet 14 of the ink cartridge, the sealing ring on the outer portion of the sealing ring 21 is tightly compressed on the inner wall of the inner wall of the ink cartridge 4 to form a reliable outer ring seal of the sealing member 25. The inner and outer ring seals described above fully and reliably satisfy the airtight thief seal requirement when the ink I ejector σ 14 is not attached to the print head ink discharge needle 19. The thermoplastic resin is thermoformed to form the outer end surface of the ink outlet port 14 to form the orifice flange 20 as shown in FIG. 2 to 2, and the sealing plug 25 is reliably realized at the ink inlet (4) of the ink cartridge. Axial fixation. In the case of the ink cartridge, the plastic film which is welded to the open end surface of the air inlet 17 is first peeled off, so that the air intake π is opened. During the installation process, the ink jetting needle 19 of the printing head is first inserted into the slit of the lower end surface of the sealing ring 21, and then is pushed to the lower surface of the inner plug 24, and the inner plug gradually overcomes the upper end surface of the sealing ring, and the binding force is called the binding ring. And finally stay at the top. Since the inner plug 24 is a rigid spherical surface, and the conical surface of the top end of the ink discharge needle 19 can only form a point contact form, the pick-up can only partially cover a part of the plurality of ink-dissipating holes distributed on the tapered surface. It is impossible to cover all of them, so the inverted inner plug 24 does not block the ink needle. After the end of the women's wear, the sealing ring 21 is elastically tightly contracted on the outer cylindrical surface of the ink discharging needle 19 to form a reliable airtight seal for the connection between the ink outlet of the ink cartridge and the ink discharging needle 19 of the printing head. . Figure 1 shows the situation when the ink cartridge has been mounted on the printer ink discharge needle 19. When the print head is in the non-working state, the _ _ _ _ _ _ _ in the normally closed state, the ink cartridge M328950 external action, the force on the slamming door is in a static equilibrium state, the pressure in the ink storage chamber i8 is slightly lower The outside is in a state of chaos and maintains a proper micro-negative pressure state, and the ink is in a static balance and will not be lost outward through the ink-jetting needle 19 of the printing head. When the print head is in operation, the suction from the print head firstly forms a low pressure region in the ink outlet 14 of the ink cartridge, and the low pressure region rapidly expands into the ink supply regulating valve 2, the ink storage chamber 、, and the inner rear surface is symmetric. The two film sheets 12 and 13 welded at the same time generate an inward concave curve like the valve inner volume is reduced, the pressure is increased, and part of the ink is discharged to the ink outlet port of the ink cartridge, and the ink flow rate is appropriately increased at this time. # When the low pressure zone is extended to the ink storage chamber 18, the air balance adjustment, that is, the static balance state of the valve 1 is broken, and the higher atmospheric pressure outside the valve overcomes the resistance of the valve core = surface bending deformation elastic force, and the valve is opened. The outside air enters the ink storage chamber 18 through the upper chamber of the valve seat 9, the upper end of the Z-center 8 convex*, and the pressure of the separation valve drops to zero, the top of the valve core, and the degree of distortion of the cylinder is negative with the ink storage chamber 18 The increase of the pressure increases, and at the same time, the elastic force of the spool is also increased due to the degree of deformation of the bow. Since the direction of the elastic force is opposite to the direction of deformation, the deformation of the scorpion is increased, that is, it always resists. The opening of the slamming door results in a state in which the valve is in a dynamic equilibrium state, so that the pressure in the ink storage chamber 18 is always maintained. • The Ϊ ratio valve is given a level slightly higher than the external atmospheric pressure. The intake regulator valve is so violently controlled to control the pressure in the ink reservoir at a relatively constant value. Therefore, when the valve is opened, the ink pressure in the ink storage I will rise properly, so that the ink cartridge from the ink storage chamber to the soil supply, the regulating valve, and then to the ink outlet of the ink cartridge, and finally enter the ink head of the print head. The direction of the ink flow. The ink supply regulating valve having the variable-section ink flow path further regulates the flow rate and pressure of the ink flowing therethrough. "When the print head stops working, the concave phenomenon of the front and rear film sheets of the ink supply regulating valve 2 shrinks and retracts with the suction shoulder loss, the internal volume of the valve increases, the pressure decreases, the ink in the valve stops flowing, and there is a small amount of external ink. The ink is infused into the ink outlet and the ink outlet is flown until the water pressure of the ink inside and outside the valve is balanced. The appropriate amount of ink is stored in the ink supply regulating valve. At the same time, the valve of the intake control valve returns to the normally closed state, the micro-negative pressure state is restored in the ink cartridge, and the ink establishes a new static balance state. As described above, the ink cartridge relies on the ink flow passage of a specific structure type in the ink supply regulating valve to regulate the flow rate and pressure of the ink flow, and the adjustment is similar to the pulling of the porous sponge; - the fine adjustment side of the contraction-changing ink flow And the material〗 _ _ _ _ control of the negative pressure fluctuation amplitude in the ink storage chamber, timely and lightly regulate the flow and pressure of the ink head flow to the print head. When the ink is replaced or the ink cartridge is replaced in the middle, after the ink cartridge is pulled out from the ink discharge needle of the print head, the sealing ring 21 is retained in the blackout port 14 of the ink cartridge by the axial fixing constraint of the aperture flange 2G. The needle 19 is disengaged, and the lower end surface of the sealing ring is originally opened by the ink dispensing needle. Since the recovery and the radial pressure on the surface of the inner hole of the four ports are contracted, the gap is formed before the opening of the floor, because the gap value is very small. , almost close to zero, is actually in the self-phase-mixing form of ''self-leakage sealing effect, regardless of the extracted I (four) can effectively prevent the remaining ink in the box from leaking out. In addition, due to the vertical upward orientation indicated by the box-like scale, the ratio of the inner surface water to the outer surface of the ink buoyancy is overcome, as shown in Fig. 2, at the contact point. _封 = step enhancement just pull out from the machine (four) the leak-proof sealing degree of the ink outlet of the ink cartridge amp & additionally 'When the printer shows the black ink. Ink hole sealing plug 23, add ink 7;:;;^= The sewing table is taken out and can be used continuously after being pulled out. Therefore, the real circle = * 仏 23 after 'reload the printer" [simple system] ^ shed system, extend the ink cartridge to make the purpose of the life. 1 is a longitudinal cross-sectional view of the ink cartridge mounted on the print head _; 10 M328950 FIG. 2 is a partial enlarged view of the ink discharge port portion of the ink cartridge of FIG. 1 when the ink discharge port of the ink cartridge has been pulled out; FIG. 3 is an ink outlet seal FIG. 4 is a cross-sectional view of FIG. 3 taken along the CC direction. [Main component symbol description] 1 An intake air regulating valve 2 - Ink supply regulating valve 3 - Box 4 A lid 5 - Small ink chamber 6 Field Ά 1 迢 7 - Filter 8 1 Valve 9 - - Seat 10 a valve cover 11 a valve body 12 a film sheet 13 a film sheet 14 an ink cartridge outlet 15 an ink inlet port 16 an ink outlet port 17 an air inlet port 18 an ink storage chamber 19 an ink outlet needle 11 M328950 20 - hole Mouth flange 21 - sealing ring 22 - ink 23 - sealing plug 24 - inner plug 25 - ink outlet sealing plug