TW200940352A - Double laser drilling of a printhead integrated circuit attachment film - Google Patents

Abstract

A method of fabricating an apertured polymeric film. The method comprising the steps of: (a) masking a polymeric film with a first mask having first laser transmission zones defined therein; (b) laser-ablating first apertures through the polymeric film using the first mask; (c) masking the film with a second mask having second laser transmission zones defined therein, each second zone being aligned with a corresponding first aperture, and each second zone having greater perimeter dimensions than the corresponding first aperture; and (d) reaming the first apertures by laser-ablating the polymeric film using the second mask, the reamed first apertures defining second apertures in the film.

Description

200940352 IX. Description of the Invention [Technical Field] The present invention relates to a printing machine, and in particular to an ink jet printing machine. [Prior Art] The applicant has developed a wide range of printing machines, which use a page. ^ Wide print head, not a traditional reciprocating print head design. The page width design increases the printing speed when the print head is printed and the image is traversed in the future to leave an image line. When the page-wide printhead passes at high speed, it only leaves ink on the media. This type of print head is capable of printing at full speed of 1 600 dpi at a speed of nearly 60 pages per minute, which is not possible with conventional ink jet printers. Printing at these speeds quickly consumes ink and can cause problems with the supply of ink to the print head. Not only is the flow rate high, but rather than feeding the ink to the smaller reciprocating print head, the page width print head and the ink distribution along the entire length of the page width print head are more complicated. Another problem in the ink supply system is that any particles are prevented from reaching the nozzle, which can block or obstruct the nozzle and affect the printing function. Therefore, any particulate deposition must be avoided as much as possible in the fabrication of each component of the ink supply system. Any particulate deposition may be carried by the ink flowing through the ink supply system. SUMMARY OF THE INVENTION In a first aspect, the present invention provides a method of making a porous polymeric film, the method comprising the steps of: (a) masking a polymeric film with a first mask, the first mask Having a first laser penetration zone defined by one or more; (b) using the first reticle, the laser ablate one or more first holes through the polymeric film; (c) a second reticle obscuring the polymeric film, the second reticle holder @ having one or more second laser penetration regions defined therein, each second laser penetration region being aligned with the corresponding first aperture And each second laser penetration zone has a larger perimeter dimension than the corresponding first aperture; and (d) ablating the polymeric film by using the second mask laser to amplify the one or more a plurality of first holes defining one or more second holes in the polymeric film. Optionally, the apertured polymeric film is an adhesive polymeric film for attaching one or more printhead integrated circuits to an ink manifold, the one or more second apertures defining one or more ink supplies hole. Optionally, the adhesive polymeric film comprises a central polymeric film sandwiched between the adhesive layers. Optionally, the central polymeric film is a polyimide film and the adhesive layer is an epoxy layer. * Optionally, the film is disposed in a film package comprising the adhesive polymeric film and a pair of removable protective liners, each pad protecting a respective adhesive layer. Optionally, the laser ablation step terminates in -6-200940352 of the protective liner. Optionally, the laser ablation step is drilled through one of the protective liners, the adhesive layer and the central polymeric film. * Optionally, the method further comprises the step of: (d) replacing at least one of the protective pads with a replacement liner. Optionally, the perimeter dimension of each of the first apertures is less than about 5 to 30 microns less than the predetermined perimeter dimension of the corresponding second aperture. u Optionally, the perimeter dimension of each of the first apertures is about 1 micron smaller than the predetermined perimeter dimension of the corresponding second aperture. Optionally, each of the second holes has a predetermined length of up to about 500 microns and a predetermined width of up to about 5 microns. Optionally, the first aperture is lined with a carbonaceous deposit and the second aperture is substantially free of the carbonaceous soot deposit. In another aspect, the invention provides a film for attaching one or more printhead integrated circuits to an ink supply manifold, the film being obtained or obtained by the above method. In a second aspect, the present invention provides a method of attaching one or more printhead integrated circuits to an ink supply manifold, the method comprising the steps of: (i) providing an adhesive film having a defined therein a plurality of ink supply holes; * (ii) bonding the film to the ink supply manifold; and (iii) bonding the one or more print head integrated circuits to the film; wherein in step (i) The film is manufactured by the following steps: (a) an adhesive polymeric film; 200940352 (b) masking the film with a first reticle having a plurality of first laser penetration regions defined therein; (c) using the first reticle 'laser ablation a plurality of first holes through the polymeric film; (d) masking the film with a second reticle having a plurality defined therein a second laser penetration region, each second laser penetration region is aligned with the corresponding first hole, and each of the second laser penetration regions has a larger circumference than the first hole of the pair Q Dimensions; and (e) expanding the first hole by ablating the polymeric film using the second mask laser Defining a first bore through the expanded film of the ink supply hole. Optionally, the ink supply manifold is a liquid crystal polymer (LCP) casting. Optionally, a plurality of the printhead integrated circuits are attached to the ink supply manifold such that they are joined end to end to provide a pagewidth printhead. φ Optionally, the ink supply aperture is positioned to supply ink to the ink supply channel, the ink supply channel being defined in the bottom side of the one or more printhead integrated circuits. Alternatively, the bonding step is carried out by heat curing and/or compression. Optionally, the ink supply aperture is substantially free of carbonaceous soot deposits. In another aspect, the present invention provides a printhead assembly that includes at least one printhead integrated circuit attached to an ink supply manifold to adhere to the printhead integrated circuit with an adhesive film having a defined A plurality of ink supply holes therein, wherein the column -8 - 200940352 print head assembly is obtained or obtained by the above method. * [Embodiment] ‘ FIG. 1 shows a printer 2 embodying the present invention. The main body 4 of the printer supports the rear media feed tray 14 and the front pivot surface 6. The first graph shows that the pivoting surface 6 is closed so that the display screen 8 is in its upright viewing position. ^ The control button 10 is extended from the side of the screen 8 to facilitate operator input when viewing the screen. To print, a single sheet of paper is drawn from the media stack 12 in the feed tray 14 and fed through the print head (hidden in the printer). The printed sheets 16 are conveyed past the print medium exit slot 18. Figure 2 shows the pivoting face 6 open to reveal the interior of the printer 2. The print head 匣 96 in which the face is mounted is exposed before the printer is opened. The print head 匣 96 is fixedly positioned by the 匣 engaging cam 20, and the 匣 engaging cam 20 pushes it down to ensure that the ink coupling member (which will be described later) is fully engaged, and the print head 1C (will explain Afterwards) correctly positioned near the paper feed path. The cam 20 is manually operated by the release lever 24. The pivoting face 6 will not close, so the printer will not operate until the release lever 24 is pushed down to fully engage the cam. Closing the pivot face 6 causes the printer contact 22 to engage the 匣 contact 104. Figure 3 shows that the pivoting face 6 of the printer is open and the printhead 96 is removed. Since the pivoting face 6 is tilted forward, the user pulls the release lever 24 upward to disengage the cam 20. This causes the handle 26 on the cymbal 96 to be gripped and pulled up. The upstream and downstream ink coupling members 112A and 112B are disengaged from the column 200940352 printer conduit 142. This will be explained in more detail below. To install a new one, the program will be the opposite. Xinyi did not inject ink when it was shipped and sold. In order to make the printer ready for printing, the active fluid system (described later) uses a downstream pump to inject the ink and print head into the ink. In Figure 4, the outer casing of the printer 2 has been removed to reveal the interior. The large ink tank 60 has separate reservoirs for all four different types of ink. The ink tank 60 itself is a replaceable weir that is coupled upstream of the printer that shuts off the valve 66 (see Figure 6). There is also a housing 92 for drawing ink from the cassette 96 by the pump 62. The printer fluid system will be described in detail with reference to Figure 6. Briefly, ink from tank 60 flows through upstream ink line 84 to shut-off valve 66 and up to printer conduit 142. As shown in Figure 5, when the crucible 96 is installed, the pump 62 (driven by the motor 196) can draw ink into the LCP casting 64 (see Figures 6 and 17 to 20) to enable capillary action. The print head IC 6 8 (again, see Figures 6 and 17 to 20) injects ink. The excess ink drawn by the pump 62 is fed into the casing 92 covered by the ink tank 60. Because of the number of contact points used, the total connection force between the contact point 1 04 and the printer contact 2 2 is quite large. In the illustrated embodiment, the total contact force is 45 Newtons. This load is sufficient to bend and deform the crucible. In Fig. 30, the internal structure of the frame casting 100 is shown. The support surface 28 shown in Fig. 3 is schematically shown in Fig. 30. The compressive load at the printer contact point on the contact point 104 is indicated by an arrow. The force on the support surface 28 is likewise indicated by an arrow. In order to maintain the structural integrity of the crucible 96, the frame casting 1 has a structure extending from the plane of the connection force -10-200940352 member 30. In order to maintain the coupling force acting in the plane of the coupling force, the frame also has contact ribs 32' which bear against the support surface 28. This allows the load on the structural member 30 to be fully compressible so that the stiffness of the crucible is maximized to minimize any degree of bending. Print Engine Pipeline The print engine pipeline has printer processing for printing data that is received from an external source and output to the printhead for printing. The printing engine pipeline is described in detail in USSN 11/014,769, filed on Dec. 20, 2004, which is hereby incorporated by reference. Fluid Systems Traditional printers rely on structures and components within the printheads, cartridges, and ink lines to avoid fluid problems. Some common fluid problems are color mixing of unfilled ink or dry nozzles, gas egress bubbles, and cross-contamination. For fluid control, optimizing the design of the printer components to avoid these problems is a passive approach. In general, the active component used to correct these problems is the nozzle actuator itself. However, this is usually insufficient and will waste a lot of ink on the work of correcting these problems. In the page width print head, the problem is exacerbated by the length and complexity of the ink supply tube supplied to the print head 1C. The applicant of the present invention has developed an active fluid system for a printing machine to solve this problem. Some of these problems are described in US Ser. No. 1 1/677,049, filed on Jan. No. s. Figure 6 illustrates one of the single pump embodiments of the active fluid system. The active fluid system is suitable for use with the printheads described in the present specification. The fluid architecture shown in Figure 6 is for a single ink line of only one color. The color printer will have separate ink lines (and separate ink reservoirs 60) for each color. As shown in Figure 6, the architecture has a single pump 62 downstream of the LCP casting 64 and a shut-off valve 66 upstream of the LCP casting. The LCP casting supports the printing head 1C 68 via the adhesion 1C adhesion film 174. The shut-off valve 66 isolates the ink in the ink tank 60 from the print head 1C 68 whenever the printer power is turned off. This causes the color mixing at the print head 1C 68 during the non-operation period to avoid reaching the ink tank 60. These issues are further detailed in the cross-reference specification USSN 11/677049 (our file SBF006US). The ink reservoir 60 has a venting bubble point pressure regulator 72 for maintaining a relatively constant negative hydrostatic pressure in the ink at the nozzle. The bubble point pressure regulator in the ink reservoir is detailed in the co-pending USSN 1 1 /6403 5 5 (our file RMC 00 7US), which is incorporated herein by reference. However, for purposes of illustration, the illustrated regulator 72 has a bubble outlet 74 that sinks into the ink of the ink reservoir 60 and is vented to the atmosphere via a sealed conduit 76 that extends to the air inlet 78. When the print head 1C 68 consumes ink, the pressure in the ink tank 60 drops until the pressure difference at the bubble outlet 74 draws air into the tank. The air forms bubbles in the ink and rises to the headspace of the trough. This pressure difference is the bubble point pressure, and the diameter (or minimum dimension) of the bubble outlet 74 and the ink concavo-convex surface at the outlet -12-200940352

Laplace pressure has an absolute relationship that prevents air from entering. The bubble point pressure regulator uses the desired bubble point pressure to create a bubble at the sinking bubble outlet 74 so as to maintain the hydrostatic pressure constant at the exit (when the air bulges to form a bubble and rises to the top of the ink) There will be a slight change in space). If the hydrostatic pressure at the outlet is at the bubble point, the hydrostatic pressure profile of the ink reservoir is known regardless of how much ink has been consumed by the ink reservoir. When the ink level drops to the outlet, the pressure on the surface of the ink in the ink tank drops toward the bubble point pressure. Of course, when an outlet 74 is exposed, the headspace is vented to the atmosphere and the negative pressure disappears. If the ink level reaches the bubble exit 74, the ink reservoir should be replenished or replaced (if it is a carcass). The ink reservoir 60 can be a fixed reservoir that can be replenished with ink, can be replaced or (disclosed in RRC 00 US, incorporated herein by reference). To prevent particle contamination, the outlet 80 of the ink tank 60 has a coarse filter. The system also uses a fine filter coupled to the print head. Because of the limited life of the filter, it is especially convenient for the user to replace the old filter with an ink cartridge or a print head. If the filter is a separate consumable, it depends on the user's industrious and regular replacement. When the bubble outlet 74 is at the bubble point pressure and the shut-off valve 66 is opened, the hydrostatic pressure at the nozzle is also fixed and less than the large pressure. However, if the shut-off valve 66 has been closed for a period of time 'the bubble from the gas may form in the LCP casting 64 or in the print head 1C' changes the pressure at the nozzle. Similarly, the expansion or contraction of the bubble caused by the daily temperature change will change the solid groove force in the ink line 84 downstream of the shut-off valve 66. The water will be turned into 82. The passer is the gas outside 68. 200940352 Force. Similarly, as the dissolved gas escaping the solution, the pressure in the ink tank changes during periods of inactivity. The ink line 86 from the LCP casting 64 to the downstream of the pump 62 can include an ink sensor 8 8 that is coupled to the electronic controller 90 for the pump. Sensor 88 senses the presence or absence of ink in downstream ink line 86. Alternatively, the system may not use the sensor 88' and the pump 62 can be configured to operate for each different operation for an appropriate period of time. This can adversely affect operating costs because of the increased ink waste. The pump 62 is fed into the tank 92 (when drawn in the forward direction). The housing 92 is physically positioned in the printer to be lower than the print head 1C 68 . This allows the ink in the downstream ink line 86 to "hang" to the LCP casting 64 during the lifetime, whereby the print head 1C 68 produces a negative hydrostatic pressure. The negative pressure at the nozzle pulls the ink bumps inward and avoids color mixing. Of course, the peristaltic pump 62 needs to be stopped in an open condition to provide liquid communication between the LCP casting 64 and the ink outlet in the pump 92. Pressure differences between ink lines of different colors can occur during periods of inactivity. In addition, paper dust or other particles on the nozzle plate can damage the ink of each nozzle. The color mixing driven by the slight pressure difference between each ink line can occur during periods when the printer is not operating. The shut-off valve 66 isolates the ink tank 60 from the nozzles of the print head 1C 68 to prevent color mixing from extending up to the ink tank 60. Once the ink in the ink tank is contaminated with different colors, it cannot be recovered and must be replaced. The cover 9 4 series printhead maintenance station 'hidden nozzles during standby' to avoid dehydration of the print head IC 68 and to make the nozzle disk block paper dust or its particles. A cover 94 is also provided for cleaning the nozzle plate to remove dry ink and other contaminants. Dehydration of the print head 1C 68 occurs when the ink solvent (typically water) evaporates and increases the viscosity of the ink. If the ink viscosity is too large, the inkjet actuator will not be able to eject ink droplets. If the cover seal is sacrificed, the dewatering nozzle can be a problem when the printer is operated again after the shutdown or standby period. The problems listed above are not uncommon during the life of the printer and can be effectively corrected using the relatively simple fluid architecture shown in Figure 6. It also allows the user to initially inject ink into the printer, not inject ink before moving the printer, or return the printer to a known print ready state using a simple fault check protocol. An example of several of these cases is detailed in USSN 1 1/677049 (our file SBF006US) referenced above. The print head 匣 0 print head 匣 96 is shown in Figures 7 to 16A. Figure 7 shows the assembled print head 96. The crucible system is mounted within the crucible frame 1 and the frame cover 102. The window of the rack exposes the contact point 1〇4, which receives the information from the print engine controller in the printer. Figures 8 and 9 show the cymbal 96 with the snaps attached over the protective cover 98. The protective cover 98 prevents damage from contact with the electrical contacts 1〇4 and the print head 1C 68 (see Figure 10). The user can hold the top of the cassette 96 and remove the protective cover 9 8 immediately prior to installation in the printer. Figure 10 shows the bottom side of the print head 匣9 6 and the "back" (relative to the -15-200940352 paper feed direction). The print head contact 104 is a conductive pad on a flexible printed circuit board 108 that is wrapped around a curved support surface (discussed below in the description of the LCP casting) to *located One of the rows of the head 1C 6 8 is wired at the junction 1 1 0. The other side of the print head 1C 68 is a paper cover 106 to prevent direct contact with the media substrate. Fig. 1 1 shows the bottom side and "front side" of the print head 匣 96. The U of the cymbal has two ink coupling members 112A and 112B at either end. Each ink coupling has four helium valves 114. When the crucible is mounted in the printer, the ink couplings 11 2A and 11 2B engage the complementary ink supply interface (described in more detail below). The ink supply interface has a printer conduit 1 42, which engages and opens the tamper valve 114. One of the ink coupling members 112A is an upstream ink coupling member, and the other is a downstream ink coupling member 1 1 2B. The upstream ink coupling member 12A establishes liquid communication between the print head 1C 68 and the ink tank 60 (see Fig. 6), and the downstream ink coupling member i12B is coupled to the 箱 case 92 (see also Fig. 6). Figure 1 2 shows various views of the print head 匣 96. The plan view of the print head 匣 9 6 also indicates the position of the cross-sectional views of Figures 14, 15 and 16. Figure 13 is an exploded perspective view of the print head cartridge 96. The LCP casting, 64 is attached to the bottom side of the 匣 frame. Then, the flexible Pcb 1〇8 is attached to the bottom side of the LCP casting 64 and wound around to expose the print head contact 104. The inlet manifold and filter 116 are coupled to the LCP inlet 122 via a resilient connector 120. Likewise, the LCP outlet 1 24 is coupled to the outlet manifold 118 via another set of resilient connectors 120. The frame cover 102 is inserted into the rack 100 from the top into the -16-200940352 port and the outlet manifold' and the removable protective cover 98 is quickly covered on the bottom to protect the contact point 104 and the print head IC (See 'Figure 11'). « Inlet and filter manifold Figure 14 is an enlarged cross-sectional view taken along line 1 2 - 14 of Figure 12, which shows one of the valves 114 through the upstream coupling 112A to the LCP 0 casting 64 fluid path. The helium valve 1 14 has an elastomeric sleeve 126 that is biased into sealing engagement with the fixed valve member 128. The printer conduit 142 is opened by the compression sleeve 126' (see Figure 16) such that it is opened by the fixed valve member 128 and allows ink to pass up the inlet and the top of the filter manifold 1 16 Flow to the top channel 1 3 8 . The top channel 1 3 8 leads to the upstream filter chamber 132 and one of the walls of the upstream filter chamber 132 is defined by the filter membrane 130. The ink flows through the filter membrane 130 into the downstream filter chamber 134 and out to the LCP inlet 122. From there, the filtered ink cartridge flows along the LCP main channel 136 for feeding into the print head 1C (not shown). The features and advantages of the inlet and filter manifold 116 will now be described with reference to Figure 15. . The exploded perspective view of Fig. 15 illustrates very clearly the intricate design of the inlet and filter manifold 116. Some features of the design contribute to the delicate form. First, the valve system is close to each other. This is not the same as the traditional self-sealing ink valve architecture. Previous designs used elastic yak that were biased into sealing engagement with the stationary member. However, the elastic member is a solid shape in which the ink flows, or is in the form of a diaphragm through which the ink flows. -17- 200940352 In the 匣 coupling, the 匣 valve is automatically opened automatically during installation. This can be achieved in an easy and cost-effective manner by means of coupling members, wherein one of the valves has an elastic member that is joined to the other valve by the rigid member *. If the elastic member is in the form of a diaphragm, it will normally hold itself against the central rigid member under tension. This provides an effective seal and requires a relatively low tolerance. However, it also requires a wide peripheral mounting of the elastic member. The width of the elastic member will be a trade-off between the required coupling force, the integrity of the seal, and the material properties of the elastic member used. As is apparent from Fig. 16, the dam valve 114 of the present invention uses an elastomeric sleeve 126 that seals against the fixed valve member 128 in the event of residual compression. When the crucible is installed in the printer, the valve 1 14 will open and the end of the conduit 148 of the printer valve 1 42 will further compress the sleeve 126. The collar 146 is opened by the fixed valve member 128 to connect the LCP casting 64 to the printer fluid system via the upstream coupling 1 1 2A and the downstream coupling 1 12B (see Figure 6). The side walls of the casing are designed to bulge outwardly as the inward depression creates a flow impediment. As shown in Fig. 16, the sleeve 126 has a weaker portion around its intermediate portion which reinforces and guides the bend. This reduces the force required to bond the 匣 to the printer and ensures that the sleeve bends outward. The coupling member is used to disengage the crucible from the printer with "no water droplets". When the printer is pulled up by the printer, the elastic sleeve 1 26 pushes the collar 146 to seal against the fixed valve member 128. Once the elastomeric sleeve 126 is sealed against the fixed valve member 1 28 (and thus the heel side of the sealing coupling), the sealing collar 146 is raised with the weir. The collar 146 is thus opened by the end of the conduit 148. When the seal breaks, the ink bumps are formed through the gap between the collar and the end of the conduit 148 -18-200940352. The shape of the end of the fixed valve member 1 28 guides the uneven surface toward the middle of its bottom surface rather than passing through it. At the middle of the circular bottom of the fixed valve member 128, the relief surface is driven to disengage itself from the nearly horizontal bottom surface. In order to achieve the lowest possible energy state, the surface tension drives the relief surface away from the fixed valve member 128. The biasing effect of minimizing the surface area of the relief surface is strong such that little ink, if any, remains on the helium valve 114 after detachment. Before the crucible is processed, any residual ink is not enough to be one of the drops that will drip and cause contamination. When the new cartridge is installed in the printer, air within the conduit 150 will enter the ink fluid 152 and be absorbed by the crucible. In view of this, the inlet manifold and filter assembly have high bubble tolerances. Referring to Figure 15, the ink flows over the top of the fixed valve member 128 and into the top channel 138. Since the top channel is the highest point of the inlet manifold 116, the top channel can replenish bubbles. However, it is still possible for air bubbles to flow into the filter inlet 158. In this case, the filter assembly itself is tolerant of air bubbles. The bubbles on the upstream side of the filter member 130 will affect the flow rate, which effectively reduces the wetted surface area on the dirty side of the filter member 130. The filter membrane has a long rectangular shape so that even a small amount of air bubbles are drawn into the dirty side of the filter, and the wetted surface area is still large enough to filter the ink at the desired flow rate. This is important for the high speed operation provided by the present invention. When bubbles in the upstream filter chamber 132 cannot pass over the filter membrane 130, bubbles emerging from the gas may create bubbles in the downstream filter chamber 134. The filter outlet 156 is positioned at the bottom of the downstream filter chamber 134 and obliquely opposite the inlet 158 in the upstream filter chamber 132 to minimize bubble effects in either chamber at the flow rate of -19-200940352 . The filters 130 for each color are juxtaposed vertically adjacent to the stack. The compartment wall 1 62 partially defines an upstream filter chamber 1 32 on one side and a downstream filter chamber 134 that partially defines an adjacent color on the other side. Because the filter chamber is so thin (for delicate design), the filter membrane 130 can be pushed against the opposite wall of the downstream filter chamber 134. This effectively reduces the surface area of the filter membrane 130. Therefore, it is harmful to maximize the flow rate. To avoid this, the opposing walls of the downstream filter chamber 134 have a series of spaced ribs 160 to maintain the diaphragm 130 from the wall. Positioning the filter inlet and outlet diagonally diagonally also helps to clean the air system during initial injection of ink into the system. In order to reduce the risk of contamination of the print head particles, the filter membrane 130 is welded to the downstream side of the first compartment wall before the next compartment wall 1 62 is welded to the first compartment wall. Thus, any broken plate filter diaphragm 130 during the welding process will be on the "dirty" side of the filter 130. ❹

LCP Casting / Flexible PCB / Print Head 1C

The LCP casting 64, the flexible PCB 108, and the print head 1C 68 assembly are shown in Figures 17 through 33. Figure 17 is a perspective view of the bottom of the LCP casting 64 with a flexible PCB and print head 1C 68 attached thereto. The LCP mirror fabric 64 is fixed to the cymbal rack 1 via the counterbore holes 166 and 168. Hole 166 is an anti-round hole for receiving a coefficient of thermal expansion (CTE) mismatch without bending the LCP. The print head 1C 68 is lined up in a longitudinal direction downwardly in a longitudinal direction of the LCP castings 64. The flexible PCB 108-20-200940352 is wire bonded to the printhead IC 68 at one edge. The flexible PCB 108 is also secured to the LCP casting 64 at the edge of the printhead 1C and the edge of the tantalum contact 104. The flexible PCB is held at both edges to hold it tightly to the curved support surface 170 (see Figure 19). This ensures that the flexible PCB does not bend to a radius that is tighter than the set minimum ,, thereby reducing the risk of broken conductive traces through the flexible PCB. Fig. 18 is an enlarged view of the insert A in Fig. 17 showing the rows of the wire bonding contact points 164 and the rows of the printing heads 1C 68 along the sides of the flexible PCB 108. Figure 19 is an exploded perspective view of the LCP/flex PCB/print head 1C assembly showing the bottom side of each component. Figure 20 is another exploded perspective view showing the top side of each component. The LCP casting 64 has an LCP channel casting 176 sealed to its bottom side. The print head 1C 68 is attached to the bottom side of the channel casting 176 by adhering the 1C adhesion film 174. The LCP main channel 184 is on the top side of the LCP trench casting 176. In the LCP casting 64, the LCP main channel 184 is open to the ink inlet 1 22 and the ink outlet 1 24 . A series of ink supply paths 182 leading to a print head 1C 68 are attached to the bottom of the LCP main channel 184. The adhesive 1C attachment film 174 has a series of laser drilling supply holes 186 such that the attachment side of each of the printing heads 1C 68 is in fluid communication with the ink supply path 182. The adhesive 1C adhering film will be described in detail below with reference to Figs. 31 to 33. The LCP casting 64 has a recess 178 for receiving the electronic component 180 in the drive circuitry on the flexible PCB 108. For optimum electrical efficiency and operation, the contact point 1〇4 on the PCB 108 should be close to the print head IC 6 8 . However, in order to keep the paper path adjacent to the print head straight -21 - 200940352, instead of being curved or angled, the contact point 104 needs to be at 匣96;

. The conductive path in a flexible PCB is called a stitch. Because the flexible PCB 'bends corners, the stitches may crack and break the joint. In order to circumscribe the stitches, the stitches can be bifurcated before bending and then twisted to make one. If one branch of the bifurcation segment is split, the other connections are connected. Unfortunately, splitting the stitches into two, and then connecting them, can cause electromagnetic interference problems and generate noise in the circuit.变 Widening the stitches is not an effective solution because the wider line is not significant to prevent cracking. Once the stitching has begun to crack, it will spread throughout the width quickly and easily. It is more effective to carefully control the bend radius than to minimize the number of stitches passing through the flexible PCB. The page width printhead presents additional complexity because the large nozzle array must be launched in a relatively short time. Immediately causing many nozzles to fire will cause a large current load on the system. This will result in a high level of inductance in the circuit, which in turn will cause a sudden drop in voltage, which is not conducive to operation. To avoid this, flexibility has a series capacitor that discharges when the nozzles are sequentially fired to relieve the load on the circuit. Since it is necessary to keep the paper passing through the print head 1C straight, the capacitor is generally attached to the contact point PCB on the side of the crucible. Unfortunately, they create additional stitches that risk the cracking of the flexible bend. The solution to this problem is to install capacitor 180 (see: Figure) next to printhead IC 6 8 to reduce the chance of stitch cracking. Capacitors and other components are concealed in the LCP castings 64, so that the sides of the paper must be worn in the support of the traces. The traces of the traces are equivalent to the bends of the remaining PCBs that must withstand the rest of the path to the PCB. 200940352 Maintain linearity. A fairly flat surface of the flexible PCB 108 downstream of the print head 1C 68 'face and paper cover mounted on the front of the 匣 96 (on the feed direction) • The piece 1 72 minimizes the risk of paper jam. Isolating the contact points from the rest of the flexible PCB minimizes the number of traces that extend through the curved section. This has greater reliability because the chance of cracking is reduced. Placing circuit components next to the print head 1C & means that it needs to be widened to a minimum, which is not conducive to delicate design. However, the advantages of this architecture outweigh the disadvantages of any tip. First, the contact point will be larger because no traces from the component exist between the contact points and around the contact points. With larger contact points, the connection is more reliable and more resistant to manufacturing inaccuracies between the contact point and the printer side. This is especially important in this case, where the joint contact points rely on the user to accurately insert the file. Second, the edge of the flexible PCB that is wired to the side of the printhead 1C is not under residual stress and is trying to break away from the bend radius. The flexible PCB can be secured to the support structure at other components of the capacitor such that the wires bonded to the printhead 1C during fabrication are easier to form and less cracked because they are not intended to be used to secure the flexible PCB. . Third, the capacitor is especially closer to the nozzle of the print head 1C, so that the electromagnetic interference generated by the discharge capacitor is minimized. An enlarged view of the bottom surface of the stamp head of Figure 2 shows a flexible PCB 108 and a print head 1C 68. The wire bonding contact 164 of the flexible PCB 108 is disposed in parallel with the -23-200940352 contact pads of the printing head 1C 68 on the bottom side of the bonding 1C adhesion film 174. Fig. 22 shows an enlarged view of the print head ic 68 and the flexible PCB removed in Fig. 21 to reveal the supply hole 186. The holes are arranged in four lengthwise columns. Each column conveys a particular color of ink, and each column is aligned to a single channel on the back side of each of the print heads 1C 68. Fig. 23 shows a bottom side view of the LCP channel casting 176 in which the adhesion 1C adhesion film 174 has been removed. This reveals an ink supply path 182 that is connected to the LCP main channel ι 84 形成 formed in the other side of the channel casting 176 (see Figure 20). It will be appreciated that when the adhesive 1C attachment film 174 is adhered, it partially defines the ink supply path i 82. It will be appreciated that the attachment film must be accurately positioned because the respective ink supply passages 1 82 must be aligned with the supply holes 186 through the membrane 1 74 for laser drilling. Figure 24 shows a bottom side view of the LCP casting where the LCP channel casting has been removed. This reveals an array of 2 holes in the cavity. When the ink is injected, the blind hole 200 contains air to attenuate any pressure pulse. This will be discussed in further detail below. ❹ Print head IC attached film Laser ablation film Refer to Figures 31 to 33 for more details on the adhesion of 1C to the thin film. The membrane 174 can be laser drilled and wound onto the reel 198 to facilitate entry into the print head cartridge 96. For handling and storage, film 174 has two protective liners ("typically PET liners" on either side. One of them is the active pad 1 8 8B, which has been attached to the film prior to laser drilling. The other pad is a replacement pad 192 that replaces the active pad 188 A after the drilling operation. -24- 200940352 The portion of the laser drilling film 1 74 shown in Fig. 32 has some of the active pads 188B that have been used to expose the supply holes 186. The replacement liner 192 on the thin side is replaced by a pad 1 88A after the laser is drilled in the supply hole 186. Figures 33A through 33C show in detail how the film 174 is made of laser. Fig. 33A shows in detail the laminated film 190 of the film before laser drilling, which is generally a polyimide film and provides the laminate. The film sheet 190 is sandwiched between the first adhesive layer 194A and the second adhesive layer, which is generally an epoxy layer. Each of the first adhesive layer 194A and the layer 194B is covered with a respective pad 188A and 188B. The thickness of 190 is generally 20 to 100 microns (typically about 50 microns - the first adhesive layer 194A and the second adhesive layer 194B are as thin as | 50 microns (usually about 25 microns). Refer to Figure 33B, from the lining The film defined by the pad 188A is laser drilled. The hole 186 is drilled through the first pad 188A, the epoxy layer 194A] and the diaphragm 190. The hole 186 terminates at the pad: at 'where the pad 188B can be compared Pad 188A is thick (eg, 188A can be 10 to 20 microns thick; pad 188B can be 30 to meter thick). Then remove the small hole pad 1 88 A on the laser entry side to replace pad 192 This film package is wound onto a reel 198 after providing a film seal as shown in Fig. 33C (see page 31 for handling and storage prior to attachment. When assembling the print head, 198 takes the appropriate length , removing the liner, and adhering the membrane 174

The membrane was removed and the other was used to burn the uranium structure. Strong in demand | 1 94B second adhesive film board). I 10 94B 88B every 10 to the side, pad 100 micron and replace it. The bottom side of the LCP-25-200940352 channel casting 1 76 is used to align the hole 1 86 with the correct ink supply path 1 82 (see Figure 25). Laser drilling is a standard method for defining pores in polymeric films. However, the problem with laser drilling is that it deposits carbon-bearing coal ash 97 in and around the hole location (see Figures 33B and 33C). The ash around the protective liner may be easy to handle because it is usually replaced after laser drilling. However, the coal ash 197 deposited in and around the actual supply port 186 is a potential problem. When the film is compressed between the LCP channel casting 1 76 and the print head 1C 68 during bonding, the coal ash may be ejected. The ejected coal ash 1 97 represents that the particles may enter the ink supply system and may be clogged in the print head 1C 68. In addition, coal ash is very fast and cannot be removed by conventional ultrasonic and/or IPA cleaning techniques. By analyzing the film 174 of the laser drilled hole, the applicant has observed that: coal ash 97 is generally present on the laser entry side of the film 1 74 (ie, the epoxy layer 194A and the film plate 190), but It is generally not present on the laser exit side of film 174 (i.e., epoxy layer 194B). The double laser ablation film must provide a method of manufacturing the 1C adhesion film 174 so that the 1C adhesion film 1 74 does not suffer from the above problems associated with carbonaceous coal ash deposition. Applicants have surprisingly discovered that the dual laser ablative ink supply aperture 186 eliminates most of the coal ash deposits 197, including the soot present on the laser entry side of the film. The starting point of the laser ablation film is the film shown in Fig. 3 3 A. -26- 200940352 In general, in the present invention, laser drilling (or generally referred to as laser ablation) uses a quasi-molecular laser having a pulse wave frequency range of 200 Hz to 400 Hz. The laser spot size is larger than the ink supply hole size, which means that several ink supply holes are simultaneously ablated. Because of the large size of the laser spot, each of the laser holes is drilled using a reticle having a plurality of laser-transmissive (or laser-transparent) regions defined therein to mask the film. In a first step, the first aperture 185 is laser drilled from the side of the film defined by the liner 188A. Hole 185 is drilled through liner 188A, epoxy layers 194 A and 194B, and central diaphragm 190. The hole 185 ends at the pad 1 8 8 B. The size of the first aperture 185 is less than the size of the desired ink supply aperture 186. Generally, each length and width of the first aperture 185 is about 1 micron smaller than the length and width of the desired ink supply aperture 186. As can be seen from Fig. 34A, the first hole 185 has coal ash 197 deposited on the first liner 188A, the first epoxy layer 194A, and the central film sheet 190. In a second step, the first aperture 185 is enlarged by further laser drilling to provide an ink supply aperture 180 having a desired size. This expansion procedure produces very small soot ash' thus the resulting ink supply aperture 186 has a clean sidewall as shown in Figure 34B. Finally, reference is made to Figure 34C, in which the first liner 188A is replaced with a replacement liner 192 to provide a film package that is ready to be wound onto the reel 198 and subsequently used to attach the print head 1c 68 to the LCP groove. Road casting 176. The second pad 1888 can also be replaced at this stage if needed. Comparing the films of the films shown in Figures 33C and 34C to the 'Double Laser Burning Uranium' method, the film 174 has ink supply holes 186 that are much cleaner than pure laser ablation -27-200940352. The film is therefore very suitable for attaching the print head 1c 68 to the LCP channel casting 176 without contaminating the ink to unwanted soot deposition. The improved ink supply to the print head 1C end Fig. 25 shows the print head 1C 68 which is overlaid on the ink supply opening 186 via the adhesive 1C attachment film 74, and then overlaid on the ink supply in the bottom side of the LCP channel casting 176 On the path 182. Adjacent print heads 1C 68 are positioned end-to-end via the attachment film 174 at the bottom of the LCP channel castings 176. At the junction between the adjacent print heads 1C 68, one of the print heads 1C 68 has a "droplet triangle" 206 portion of the nozzle in the column, which is laterally offset from the corresponding nozzle array 220. Column. Thus, the printing of the adjacent printing head 1C is continued from the printing edge of one printing head 1C. By offsetting the water droplet triangle 206 of the nozzle, the spacing between adjacent nozzles (in the direction perpendicular to the media feed direction) remains the same whether either nozzle is on either side of the junction on the same 1C or different 1C. This requires precise relative positioning of adjacent printheads 1C 68 and the use of fiducial markers 204 for this purpose. This process takes time, but it avoids leaving a flaw on the printed image. Unfortunately, some of the nozzles at the end of the printhead 1C 68 may be deficient in ink relative to the integral nozzles in other portions of the array 220. For example, ink can be supplied to the nozzle 222 by two ink supply holes. The ink supply holes 224 are closest. However, if there is a hindrance or a particularly large demand from the nozzle to the left side of the ink supply hole 224, the supply hole 226 is also close to the nozzle 222, and the chance of the ink being not injected into the nozzle due to the lack of ink is very small. In contrast, if it is not for the "extra" ink supply hole 210 at the junction between adjacent printhead ICs 68', the nozzle 214 at the end of the print head 1C 68 will only be associated with the ink supply aperture 216. Liquid connection. Having an "extra" ink supply port 2 1 0 means that there is no risk that any nozzle will be so far from the ink supply port that there is a lack of ink. Both ink supply apertures 208 and 210 are fed into the ink by a common ink supply path 212. The ink supply path 212 has a capacity to supply two holes because the ink supply hole 208 has only the nozzle on the left side thereof, and the ink supply hole 2 1 〇 has only the nozzle on the right side thereof. Therefore, the total flow rate through the ink supply path 2 1 2 is approximately equal to the supply path through which only one hole is fed. The second graph focuses on the difference between the number of channels (colors) of the ink supply in the print head 1C 6 8 - the ratio between the four channels and the five channels 218. The third and fourth channels 218 in the rear side of the print head 1C 68 are fed with ink from the same ink supply holes 186. These ink supply holes are somewhat enlarged to span the two channels 218. The reason for this is that the print head 1C 68 is manufactured for a wide range of printers and printhead architectures. These can have five color channels - CMYK and IR (infrared) - but other printers (this design) may be just a 4-channel printer, others may still be 3-channel (CC, MM, and Y). In view of this, a single color channel can be fed to two of the printhead 1C channels. The Print Engine Controller (PEC) microprocessor can easily incorporate this into the printed material that is sent to the printhead IC. In addition, the supply of the same color provides a certain degree of nozzle backup for the two nozzle rows in the IC, while -29-200940352 can be used for dead nozzle compensation. Pressure Pulses When the ink that flows to the print head suddenly stops, an ink pressure spike occurs. This can happen at the end of the print job or page. The high speed page width printhead of the assignee of this case requires a high flow rate supply of ink during operation. Therefore, the quality of the ink supplied to the nozzle in the ink line is quite large and moves at a small rate. Suddenly ending the print job or just ending at the print page, this requires a fairly fast flow of ink that stops quite quickly. However, a sudden stop of ink momentum causes a shock wave in the ink line. The LCP casting 64 (see Figure 19) is particularly hard and almost non-tacky when the ink line ink is to be stopped. Since the ink line does not have any compatibility, the shock wave will exceed the Laplace pressure (the pressure generated by the surface tension of the ink at the nozzle opening, which is used to maintain the ink in the nozzle chamber) and rush to the surface before the print head 1C 68. If the nozzle is full of ink and the ink may not be ejected, a flaw will appear in the print. When the nozzle emissivity matches the resonance frequency of the ink line, a resonance pulse wave is generated in the ink. Similarly, because of the hard structure of the ink lines, a large proportion of nozzles for simultaneous emission of one color can generate standing waves or resonant pulses. This can cause the nozzle to fill up with ink, or if the LaPlace pressure is exceeded, because the pressure is suddenly reduced, the nozzle is not filled with ink. To solve this problem, the L C P casting 64 4 incorporates a pulse damper to remove pressure spikes from the ink line. The pulse damper can be a gas volume that can be closed by the ink pressure -30-200940352. Alternatively, the pulse damper can be an ink line compatible portion that can absorb pressure pulses. In order to minimize design complexity and maintain compactness, the use of a compressible gas volume to attenuate pressure pulses. Shrinking to attenuate the pressure pulse can be accomplished with a small gas volume. This is a delicate design, while at the same time avoiding any nozzles that are transiently pointed in the ink pressure. As shown in Figures 24 and 26, the pulse damper in the ink is not a single compressed gas volume. The pulse damper array is distributed along the length of the L C P casting 66. The pressure pulse of the moving print head (such as the page wide print head) can be attenuated at any point in the ink flow. However, when the pulse wave passes through the print head integrated body nozzle, the pulse wave causes the nozzle to swell the ink 'until the pulse wave is followed by the damper. By virtue of the pulse dampers in the ink supply conduit adjacent to the nozzle array, any pressure spikes are attenuated by the position where the ink would otherwise be full. As shown in Fig. 26, the air damper recess 200 is configured such that each row of recesses is placed directly in the LCP channel casting 176; above the channel 184. Any ink pulse wave in the middle main channel 184 directly acts on the air in the cavity 200, and quickly dissipates the ink injected into the print head. The LCP channel cast shown in Fig. 27 will be described in detail. Inject ink. By using the pump from the fluid system (the deflection and the form, the gas pressure can maintain the wave caused by the wave, and the pulse cavity 200 will be merged in the way of extending the column row to disappear. The disadvantage is 4 columns. The pressure loss in the main LCP main body. The creation 176 sees the 6-31 - 200940352 figure) The suction applied to the main channel outlet 23 2 causes the LCP channel casting 176 to be injected into the ink. The main channel 184 is filled with ink, and then the ink supply path 182 and the print head 1C are self-injected with ink by capillary action. The main channel 1 8 4 is quite long and thin. In addition, if the air cavity 200 needs to be used to attenuate the pressure pulse in the ink, it must maintain unfilled ink. This can be a problem for the ink injection process, which can easily fill the cavity 200 by capillary action, or the main channel 184 cannot completely inject ink because of air trapping. To ensure that the LCP trench casting 176 is fully implanted with ink, the main channel 184 has a turns 228 at the downstream end prior to the exit 232. To ensure that the air recess 200 in the LCP casting 64 does not inject ink, it has an opening wherein the upstream edge is shaped to advance toward the upper surface of the cavity wall to direct the ink relief. These patterns are described with reference to Figures 28A, 28B and 29A to 29C. These figures schematically illustrate the ink injection procedure. Figures 28A and 28B show the problem if there is no flaw in the main channel, and the 29A to 29C diagram shows the function of the 堰228. Figures 28A and 28B are schematic cross-sectional views of one of the main trenches 1 84 of the LCP trench casting 176 and the array of air recesses 200 in the top of the trench. Ink 238 is drawn through inlet 230 and along the bottom surface of main channel 184. It is important to note that the advancing embossed surface has a steeper contact angle with the main channel 184. This causes the front portion of the ink fluid 238 to have a slightly bubble shape. When the ink reaches the end of the main channel 184, the ink level rises and the bubble-like front contacts the top of the channel -32-200940352 before the ink flow stops. As shown in Fig. 28B, the channel 184 is unable to completely inject the ink, and now there is air trapped. This air bag will continue to interfere with the operation of the print head. The ink damping characteristics are changed, and air becomes an obstacle to the ink. In Figs. 29A to 29C, the channel 184 has 堰 228 at the downstream end. As shown in Fig. 29A, the ink fluid 238 forms a pool after the 堰22 8 and rises toward the top of the channel.堰22 8 has a sharp edge 240 at the top to serve as a fixed point for the relief surface. The advancing concave surface is fixed to the fixed edge 240 such that the ink does not flow easily through the crucible 228 when the ink level exceeds the top edge. As shown in Fig. 29B, the raised surface of the bulge causes the ink to rise until it fills the channel 184 to the top. Since the ink-sealed recess 200 becomes a separate air pocket, the raised ink-concave surface at the weir 228 is broken from the sharp top edge 2 40 and is filled at the end of the channel 184 and the outlet 232 (see Figure 29C). The sharp top edge 240 is precisely positioned such that the ink-concave surface will bulge until the ink fills the top of the channel 184, but does not allow the ink to swell too much to contact the end air cavity 242. If the uneven surface contacts and is fixed inside the end air cavity 242, it may inject ink. Therefore, the height of the raft and its position under the cavity are accurately controlled. The curved downstream surface of the crucible 228 ensures that there are no more fixed points, and if these are fixed, the ink relief surface may be allowed to bridge the void to the recess 242. Another way the LCP uses to keep the cavity from injecting ink is the shape of the upstream and downstream edges of the cavity opening. As shown in Figures 28A, 28B and 29A to -33- 200940352 29C, all upstream edges have curved transition surfaces 234, while the downstream edges are sharp. The ink relief along the top of the channel 184 can be secured to the sharp upstream edge and then moved upwardly into the cavity by capillary action. The transition surface, and particularly the curved transition surface 234 at the upstream edge, removes the strong anchor points provided by the sharp edges. Similarly, the applicant's work has found that if the recess 200 inadvertently fills up some of the ink, the sharp downstream edge 23 6 will enhance the infusion of ink. If the printer is bumped, vibrated, or tilted, or if the fluid system must flow back for some reason, the cavity 200 may be completely or partially filled with ink. When the ink again flows in its normal direction, the sharp downstream edge 23 6 helps pull the ink relief back to the natural fixed point (i.e., the sharp corner). Thus, the control of the movement of the ink-concave surface through the LCP channel casting 176 is a means for properly injecting the crucible into the ink. The present specification has been described by way of example only. A person skilled in the art will recognize that many variations and modifications can be made without departing from the spirit and scope of the broad inventive concept of the invention. The embodiment illustrated and described in the drawings is merely illustrative, and is not intended to limit the invention. BRIEF DESCRIPTION OF THE DRAWINGS The embodiments of the present invention are described by way of example only with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a front and side perspective view of a printer embodying the present invention. Fig. 2 shows the printer of Fig. 1 with the front surface in the open position 〇 Fig. 3 shows the printer of Fig. 2 whose print head is removed. -34- 200940352 Figure 4 shows the printer of Figure 3 with the outer casing removed. Fig. 5 shows the printer of Fig. 3, the outer casing of which is removed and the print head is mounted. Figure 6 is a schematic diagram of the fluid system of the printer. Figure 7 is a series of top and front perspective views of the print head. Figure 8 is a top and front perspective view of the print head in its protective cover. 〇 Figure 9 is a top and front perspective view of the print head removed by its protective cover. The first and second pictures of the series of print heads and the front view. Figure 1 1 series of head and back view of the print head. Figure 12 shows a view of all sides of the print head. The exploded perspective view of the print head of the 1st and 3rd series. Figure 14 is a cross-sectional view of the ink coupling of the print head. Figure 15 is an exploded perspective view of the ink inlet and filter assembly. Figure 16 shows a cross-sectional view of the spool valve engaged with the printer valve. Figure 17 is a perspective view of an LCP casting and a flexible PCB. Figure 18 is an enlarged view of the insert A in Figure 17. Figure 19 is an exploded perspective view of the LCP/flex PCB/print head 1C assembly. Figure 20 is an exploded top perspective view of the LCP/flex PCB/print head 1C assembly. Figure 21 is an enlarged view of the bottom surface of the L C P /flexible P C B /print head Ϊc assembly. -35- 200940352 Fig. 22 shows an enlarged view of the print head 1C and the flexible PCB removed in Fig. 21. Fig. 23 is an enlarged view showing the removal of the adhering film of the printing head 1C in Fig. 22. Fig. 24 is an enlarged view showing the removal of the LCP channel casting in Fig. 23. Fig. 25 shows the print head 1C in which the rear channel and the nozzle are superposed on the ink supply path. Figure 26 is an enlarged cross-sectional perspective view of the LCP/flex PCB/print head 1C assembly. Figure 27 is a plan view of an LCP channel casting. Figures 28A and 28B are schematic cross-sectional views of the LCP channel casting injecting ink without flaws. The 2nd 9A, 29B, and 29C are schematic cross-sectional views of the LCP channel casting in which the ink is injected and have defects. Figure 30 is an enlarged cross-sectional perspective view of the LCP casting showing the position of the contact force and force. Fig. 31 shows a reel of the 1C attached film. Figure 32 shows a cross section of the 1C attached film between the pads. Section 3 3 A to 3 3 C is a partial cross-sectional view showing the various stages of conventional attached film laser drilling. Figures 34A through 34C are partial cross-sectional views showing various stages of dual attachment film laser drilling in accordance with the present invention. -36- 200940352 Description of component symbols] Printer Main body Pivot surface Screen 〇 : Control button = Media stack : Feed tray : Paper : Exit slot : Cam : Contact point : Release lever = Handle : Support surface : Ink tank : Pump

: LCP casting: shut-off valve: print head 1C: pressure regulator: bubble outlet: sealed conduit: air inlet - 37 200940352 80 : outlet 82: coarse filter * 8 4 : ink line. 8 6 : ink line 8 8 : Sensor 9 0 : Electronic controller 92 : Case 94 : Cover 96 : Print head 匣 98 : Protective cover 100 : Rack 102 : Rack cover 104 : Contact point 106 : Paper cover 108 : Flexible printed circuit board 1 1 0 · Wiring joint 1 12A : Ink coupling 112B : Ink coupling 1 1 4 : 匣 valve 1 1 6 : Inlet and filter manifold 1 1 8 : Outlet manifold 120 : Connector 122: inlet 124: outlet - 38 200940352 126: elastic sleeve 1 2 8 : fixed valve member 130: diaphragm 1 3 2 : filter chamber 1 3 4 : filter chamber 1 3 6 : LCP main channel 1 3 8 : Top channel 142: printer conduit 1 46: collar 148: conduit 1 50: conduit 1 5 2 : ink fluid 1 5 6 : filter outlet 1 5 8 : filter inlet 1 6 0 : spacer rib 1 6 2 : compartment wall 164 : wire joint contact point 166 : countersunk hole 1 6 8 : countersunk hole 170 : support surface 172 : paper cover 174 : attachment film 176 : LCP channel casting 1 7 8 : recess -39- 200940352 Electronic component ink supply path channel first hole ink supply hole = gasket: liner diaphragm replacement gasket: first adhesive layer: second adhesive layer motor coal ash reel cavity reference mark water droplet triangle ink supply hole ink supply Hole ink supply path nozzle ink supply hole ink supply channel nozzle array 200940352: nozzle: ink supply hole: supply hole: 堰: inlet: outlet ❹: curved transition surface: sharp downstream edge: ink fluid: edge: recess

Claims (1)

200940352 X. Patent Application 1. A method of manufacturing a porous polymeric film, the method comprising the steps of: (a) masking a polymeric film with a first reticle having one or more defined therein a first laser penetration region; (b) using the first mask, the laser ablate one or more first holes through the polymeric film; (c) masking the polymeric film with a second mask, the first The two masks have one or more second laser penetration zones defined therein, each of the second laser penetration zones being aligned with the corresponding first aperture, and each of the second laser penetration zones has a larger peripheral dimension than the corresponding first hole; and (d) ablating the polymeric film by using the second mask laser to enlarge the one or more first holes, the enlarged first holes defining One or more second pores in the polymeric film. 2. The method of claim 1, wherein the apertured polymeric film is an adhesive polymeric film for attaching one or more printhead integrated circuits to an ink manifold, the one or more second apertures One or more ink supply holes are defined. 3. The method of claim 2, wherein the adhesive polymeric film comprises a central polymeric film sandwiched between the adhesive layers. 4. The method of claim 3, wherein the central polymeric film is a polyimide film and the adhesive layer is an epoxy layer. 5. The method of claim 3, wherein the film is disposed in a film package comprising the adhesive polymeric film and a pair of -42-200940352 removable protective liners, each pad protecting each Do not stick to the layer. 6_ The method of claim 5, wherein the laser ablation step terminates in one of the protective pads. 7. The method of claim 6, wherein the laser ablation step is drilled through one of the protective liners, the adhesive layer, and the central polymeric film. 8. The method according to claim 5, further comprising the steps of: (d) replacing at least one of the protective liners with a replacement gasket 〇 9. According to the method of claim 1 The perimeter dimension of a first aperture is about 5 to 30 microns less than the predetermined perimeter dimension of the corresponding second aperture. 10. The method according to claim 1, wherein a peripheral dimension of each of the first holes is smaller than a predetermined peripheral dimension of the corresponding second hole by about 10 micrometers 〇 11. According to the method of claim 1 of each of the claims The predetermined length of the second hole is up to about 500 μm and the predetermined width is up to about 50,000 μm. The method according to claim 1 wherein the first hole is lined with carbon-containing deposits, and the first The two pores are substantially free of the carbonaceous coal ash deposit. 13. A film for attaching one or more printhead integrated circuits to an ink supply manifold, wherein the film is obtained or obtained by the method of -43-200940352 according to claim 2 of the scope of the patent application. I4. A method of attaching one or more printhead integrated circuits to an ink supply manifold, the method comprising the steps of: (i) providing an adhesive film having a plurality of ink supply apertures defined therein;将该 joining the film to the ink supply manifold; and (iii) bonding the one or more print head integrated circuits to the film; wherein the film in step (i) is manufactured by the following steps (a) providing an adhesive polymeric film; (b) masking the film with a first reticle having a plurality of first laser penetration regions defined therein; (c) using the first light a cover 'laser ablation of a plurality of first holes through the polymeric film; (d) masking the film with a second mask having a plurality of second laser penetration regions defined therein Each second laser penetration zone is aligned with the corresponding first aperture, and each second laser penetration zone has a larger perimeter dimension than the corresponding first aperture; and (e) by using the a two-mask laser ablate the polymeric film to expand the first hole, each enlarged first hole boundary The film passes through the ink supply hole. The method of claim 14, wherein the ink is supplied to a liquid crystal polymer (LCP) casting. 16. The method of claim 14, wherein the plurality of print head integrated circuits are attached to the ink supply manifold such that they are joined end-to-44 - 200940352 to provide a page width print head . 17. The method of claim 14, wherein the ink supply apertures are positioned to supply ink to an ink supply channel, the ink supply channels being defined at the bottom of the one or more printhead integrated circuits Side. 18. The method of claim 14, wherein the joining step is performed by thermal curing and/or compression. 19. The method of claim 14, wherein the ink supply aperture is substantially free of carbonaceous soot deposits. a printing head assembly comprising at least one print head integrated circuit attached to an ink supply manifold, the adhesive film being attached to the print head integrated circuit, the adhesive film having a plurality of inks defined therein The supply hole is obtained by obtaining or obtaining the print head assembly according to the method of claim 14 of the patent application. ❹ -45-