JP2008213239A - Method for manufacturing liquid jetting head unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a liquid jetting head unit improving the quality of printing by highly precisely positioning a liquid jetting face and a head reference face. <P>SOLUTION: A holding member 210 provided with the head reference face B is held by a first jig 400 with a first reference face C which keeps the head reference face B abutted for positioning, and the liquid jetting head 2 provided with the liquid jetting face A is held by a second jig 410 with a second reference face D which keeps the liquid jetting face A abutted for positioning, and which is positioned to the first reference face C so as to be relatively adjustable, and the holding member 210 and the liquid jetting head 2 are stuck together through an adhesive 215. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a method for manufacturing a liquid ejecting head unit including a liquid ejecting head that ejects liquid, and more particularly, to a method for manufacturing an ink jet recording head unit including an ink jet recording head that ejects ink as liquid.

  For example, an ink jet recording head unit (hereinafter also referred to as a head unit) that includes an ink jet recording head that discharges ink as a liquid includes a cartridge case that holds an ink cartridge filled with ink, and a cartridge case. And a plurality of ink jet recording heads that eject ink supplied from an ink cartridge through an adhesive through an adhesive (see, for example, Patent Document 1).

  In such a head unit, when a plurality of ink jet recording heads are bonded to the cartridge case via an adhesive, the opposite sides of the liquid jet surface of each ink jet recording head are pressed by a pressing member to bond them together. By doing so, the ink jet recording head is positioned in the cartridge case in a state where the liquid ejection surfaces of the ink jet recording heads are aligned.

Japanese Patent Laying-Open No. 2005-186587 (pages 5 to 9, FIGS. 1, 2 and 5)

  However, since the cartridge case is mounted on, for example, a carriage that moves in the main scanning direction of the ink jet recording apparatus, the distance between the head reference surface that is positioned on the carriage of the cartridge case and the liquid ejection surface varies. If so, there is a problem that the distance from the recording medium such as paper varies and the print quality deteriorates.

  Further, there is a problem that the print quality is deteriorated even when the head reference surface and the liquid ejecting surface of the cartridge case are inclined.

  In particular, when a plurality of head units are mounted on one ink jet recording apparatus, the print quality is significantly deteriorated if the distance and inclination between the head reference surface and the liquid ejection surface are not uniform between the plurality of head units. There is a problem.

  Such a problem exists not only in a method for manufacturing an ink jet recording head unit that ejects ink, but also in a method for manufacturing a liquid ejecting head that ejects liquid other than ink.

  In view of such circumstances, it is an object of the present invention to provide a method of manufacturing a liquid ejecting head unit that can position a liquid ejecting surface and a head reference surface with high accuracy and improve print quality.

According to an aspect of the present invention for solving the above-described problem, a plurality of liquid ejecting units including a liquid ejecting head main body that ejects liquid from a nozzle opening and a head case that is joined to the opposite side of the liquid ejecting surface of the liquid ejecting head main body A head and a holding member that is integrally bonded to the head case side of the plurality of liquid jet heads via an adhesive, and the holding member corresponds to a fixing member that holds the holding member. A liquid ejecting head unit manufacturing method provided with a head reference surface that is positioned in contact with the head, wherein the holding member includes a first reference surface that is positioned in contact with the head reference surface. And the liquid ejecting head is positioned so that the liquid ejecting surface is in contact with the second reference surface and is positioned so as to be relatively adjustable with respect to the first reference surface. And is held by the second jig having a surface, some of said liquid jet head and the holding member in the method of manufacturing a liquid jet head unit, characterized in that adhering through an adhesive.
In this aspect, the holding member and the liquid ejecting head are bonded together while the head reference surface is positioned in contact with the first reference surface and the liquid ejecting surface is positioned in contact with the second reference surface. Thus, the positioning of the head reference surface and the liquid ejecting surface can be performed with high accuracy, and when the liquid ejecting head unit is repeatedly manufactured, the liquid ejecting surface of each liquid ejecting head unit and the head reference surface Distance and inclination can be made uniform. Further, even if there is a variation in the thickness of the head main body and the head case constituting the liquid ejecting head, the variation is absorbed by the adhesive, and each liquid ejecting surface A and the head reference surface B Can be positioned with high accuracy. Therefore, the thickness of the adhesive can be adjusted, and problems due to the outflow of the adhesive can be prevented.

  Here, before joining the plurality of head main bodies and the holding member, the liquid ejecting surfaces of the plurality of head main bodies are joined to a common fixing plate, and the liquid ejecting surfaces of the liquid ejecting heads are It is preferable that the second reference surface is brought into contact with the second reference surface via the fixing plate. According to this, a plurality of liquid ejecting heads can be simultaneously bonded to the holding member.

  Further, the holding member is a cartridge case for supplying the liquid in the liquid storage portion for each liquid ejecting head, and a flange portion is provided on a side surface of the cartridge case, and the same direction as the liquid ejecting surface of the flange portion Is preferably the head reference surface. According to this, even when the cartridge case has a head reference surface in the same direction as the liquid ejecting surface, the head reference surface of the cartridge case and the liquid ejecting surface of the liquid ejecting head are positioned with high precision, Can be glued.

Hereinafter, the present invention will be described in detail based on embodiments.
(Embodiment 1)
FIG. 1 is a schematic diagram illustrating an ink jet recording apparatus that is an example of a liquid ejecting apparatus according to Embodiment 1 of the invention. As shown in FIG. 1, an ink jet recording apparatus I which is an example of a liquid ejecting apparatus is provided with a plurality of ink jet recording head units 1 each having an ink jet recording head which is an example of a liquid ejecting head. In the ink jet recording head unit 1, cartridges 1A and 1B constituting ink supply means are detachably provided. The ink jet recording head unit 1 on which the cartridges 1A and 1B are mounted is mounted on a carriage 3 which is a fixed member.

  A carriage 3 on which the ink jet recording head unit 1 is mounted is provided on a carriage shaft 5 attached to the apparatus main body 4 so as to be movable in the axial direction. The ink jet recording head unit 1 discharges, for example, a black ink composition and a color ink composition, respectively.

  Then, the driving force of the driving motor 6 is transmitted to the carriage 3 via a plurality of gears and a timing belt 7 (not shown), so that the carriage 3 on which the ink jet recording head unit 1 is mounted is moved along the carriage shaft 5. The On the other hand, the apparatus body 4 is provided with a platen 8 along the carriage shaft 5, and a recording sheet S, which is a recording medium such as paper fed by a paper feed roller (not shown), is conveyed on the platen 8. It is like that.

  Here, the ink jet recording head unit 1 which is an example of the liquid jet head unit of the present embodiment will be described in detail. 2 is an exploded perspective view showing the ink jet recording head unit according to Embodiment 1 of the present invention, FIG. 3 is an assembly perspective view of the ink jet recording head unit, and FIG. It is sectional drawing.

  As shown in the drawing, a cartridge case 210 that is a holding member constituting the ink jet recording head unit 1 has a cartridge mounting portion 211 to which an ink cartridge 1A or 1B (see FIG. 1) that is an ink supply means is mounted. The member is brought into contact (held) with the carriage 3. For example, in this embodiment, the ink cartridge is configured as a separate body filled with black and three color inks, and the ink cartridges of the respective colors are mounted in the cartridge case 210. Further, as shown in FIG. 4, a plurality of ink communication paths 212 having one end opened to each cartridge mounting portion 211 and the other end opened to the head case side described later are provided on the bottom surface of the cartridge case 210. . Further, an ink supply needle 213 inserted into the ink supply port of the ink cartridge is formed in the ink communication path 212 in order to remove bubbles and foreign matters in the ink at the opening of the ink communication path 212 of the cartridge mounting portion 211. It is fixed through a filter (not shown).

  A flange portion 214 is provided on the side surface of the cartridge case 210. As will be described in detail later, a surface in the same direction as the surface to which the head main body of the flange portion 214 is fixed is defined as a head reference surface B that is positioned in contact with the carriage 3 when held by the carriage 3.

  A plurality of ink jet recording heads 2 are fixed to the bottom surface side of such a cartridge case 210.

  A plurality of ink jet recording heads 2 are provided corresponding to the ink colors of the ink cartridges 1A and 1B. In this embodiment, one inkjet recording head unit 1 is provided with four inkjet recording heads 2.

  Here, the ink jet recording head 2 which is an example of the liquid jet head of the present embodiment will be described in detail. FIG. 5 is an exploded perspective view of the ink jet recording head, and FIG. 6 is a cross-sectional view of the ink jet recording head. As shown in FIGS. 5 and 6, the ink jet recording head 2 includes a head main body 220 that is a liquid ejecting head main body, and a head case 230 provided on the side opposite to the liquid ejecting surface A of the head main body 220. To do.

  In this embodiment, the flow path forming substrate 10 constituting the head main body 220 is made of a silicon single crystal substrate, and an elastic film 50 made of silicon dioxide is formed on one surface thereof. This flow path forming substrate 10 is formed with two rows in which pressure generation chambers 12 partitioned by a plurality of partition walls are arranged in parallel in the width direction by anisotropic etching from the other side. Further, on the outer side in the longitudinal direction of the pressure generating chambers 12 in each row, there is communication with a reservoir unit 31 provided on a reservoir forming substrate 30 described later, and a communication composing a reservoir 100 serving as a common ink chamber for each pressure generating chamber 12. A portion 13 is formed. The communication portion 13 is in communication with one end portion in the longitudinal direction of each pressure generating chamber 12 via the ink supply path 14.

  Further, a nozzle plate 20 having a nozzle opening 21 communicating with the side opposite to the ink supply path 14 of each pressure generating chamber 12 on the opening surface side of the flow path forming substrate 10 is an adhesive, a heat-welded film, or the like. It is fixed through. In other words, in this embodiment, two nozzle rows 21 </ b> A in which the nozzle openings 21 are arranged in parallel are provided in one head main body 220.

  In the present embodiment, the surface of the nozzle plate 20 where the nozzle openings 21 are opened is the liquid ejection surface A.

  On the other hand, on the side opposite to the opening surface of the flow path forming substrate 10, on the elastic film 50, a lower electrode film made of metal, a piezoelectric layer made of lead zirconate titanate (PZT) or the like, and made of metal. A piezoelectric element 300 formed by sequentially laminating the upper electrode film is formed. On the flow path forming substrate 10 on which such a piezoelectric element 300 is formed, a reservoir forming substrate 30 having a reservoir portion 31 that constitutes at least a part of the reservoir 100 is joined. In this embodiment, the reservoir portion 31 is formed across the reservoir forming substrate 30 in the thickness direction and across the width direction of the pressure generating chamber 12, and as described above, the communication portion of the flow path forming substrate 10 is formed. The reservoir 100 is connected to the pressure generation chamber 12 and serves as a common ink chamber for the pressure generation chambers 12.

  A piezoelectric element holding portion 32 having a space that does not hinder the movement of the piezoelectric element 300 is provided in a region facing the piezoelectric element 300 of the reservoir forming substrate 30.

  Furthermore, a drive IC 110 for driving each piezoelectric element 300 is provided on the reservoir forming substrate 30. Each terminal of the drive IC 110 is connected to a lead wiring drawn from the individual electrode of each piezoelectric element 300 via a bonding wire or the like (not shown). Each terminal of the drive IC 110 is connected to the outside via an external wiring 111 such as a flexible printed circuit (FPC), and receives various signals such as a print signal from the outside via the external wiring 111. .

  A compliance substrate 40 is bonded on the reservoir forming substrate 30. An ink inlet 44 for supplying ink to the reservoir 100 is formed in a region facing the reservoir 100 of the compliance substrate 40 by penetrating in the thickness direction. In addition, the region of the compliance substrate 40 other than the ink introduction port 44 in the region facing the reservoir 100 is a flexible portion 43 formed thin in the thickness direction, and the reservoir 100 is sealed by the flexible portion 43. Has been. Compliance is given to the reservoir 100 by the flexible portion 43.

  A head case 230 is fixed on the surface of each head body 220 opposite to the liquid ejection surface A, that is, on the compliance substrate 40.

  The head case 230 communicates with the ink introduction port 44 and communicates with the ink communication passage 212 of the cartridge case 210, and is provided with an ink supply communication passage 231 that supplies ink from the cartridge case 210 to the ink introduction port 44. . In the head case 230, a recess 232 is formed in a region facing the flexible portion 43 of the compliance substrate 40 so that the flexible portion 43 is appropriately deformed. The head case 230 is provided with a drive IC holding part 233 penetrating in the thickness direction in a region facing the drive IC 110 provided on the reservoir forming substrate 30, and the external wiring 111 is connected to the drive IC holding part. The drive IC 110 is connected through the H.233.

  In the ink jet recording head 2 of this embodiment, ink from the ink cartridges 1 </ b> A and 1 </ b> B is taken from the ink introduction port 44 through the ink communication path 212 and the ink supply communication path 231, and is transferred from the reservoir 100 to the nozzle opening 21. After filling the inside with ink, according to a recording signal from the drive IC 110, a voltage is applied to each piezoelectric element 300 corresponding to the pressure generating chamber 12, and the elastic film and the piezoelectric element 300 are bent and deformed. The pressure in the pressure generating chamber 12 increases and ink droplets are ejected from the nozzle openings 21.

  The above-described head main body 220 forms a large number of chips on one silicon wafer at the same time, and bonds and integrates the nozzle plate 20 and the compliance substrate 40, and then a single chip size as shown in FIG. The head main body 220 is obtained by dividing each flow path forming substrate 10.

  Such an ink jet recording head 2 is fixed to the bottom surface of the cartridge case 210 via four adhesives 215. In the present embodiment, the four ink jet recording heads 2 are arranged at a predetermined interval in the arrangement direction of the nozzle rows 21A. That is, one nozzle type recording head 2 of this embodiment is provided with eight nozzle rows 21A. In this way, the nozzle rows 21A including the nozzle openings 21 arranged side by side using a plurality of ink jet recording heads 2 are arranged in multiple rows, thereby forming a plurality of nozzle rows 21A in one ink jet recording head 2. Compared to the above, the yield can be prevented from decreasing. Further, by using a plurality of ink jet recording heads 2 in order to increase the number of nozzle rows 21A, the number of head main bodies 220 (ink jet recording heads 2) that can be formed from one silicon wafer is increased. It is possible to reduce the use cost of the silicon wafer and reduce the manufacturing cost.

  Further, as shown in FIGS. 2 and 4, the four ink jet recording heads 2 are positioned and held by a common fixing plate 250 bonded to the liquid ejecting surface A of the plurality of ink jet recording heads 2. Has been. The fixing plate 250 has a function as a common member when the plurality of head main bodies 220 are fixed to a common member, and defines an exposed opening 251 that exposes the nozzle opening 21 and an exposed opening 251. In addition, a joining portion 252 that is joined to at least both ends of the nozzle row 21A of the liquid ejection surface A of the head body 220 is provided.

  In the present embodiment, the joining portion 252 extends between the fixing frame portion 253 provided along the outer periphery of the liquid ejecting surface A across the plurality of head main bodies 220 and the adjacent head main body 220 so as to be exposed. The joint portion 252 including the fixing frame portion 253 and the fixing beam portion 254 is joined to the liquid ejecting surfaces A of the plurality of head main bodies 220 at the same time. In this way, by bonding the plurality of head main bodies 220 to the fixed plate 250, the liquid ejecting surface A of the head main body 220 can be aligned on a plane.

  On the other hand, as shown in FIGS. 2 and 3, the ink jet recording head unit 1 has a box shape that covers the plurality of ink jet recording heads 2 on the opposite side of the fixing plate 250 from the ink jet recording head 2. A cover head 240 is provided. The cover head 240 has a fixing portion 242 provided with an opening 241 corresponding to the exposed opening 251 of the fixing plate 250, and a side surface side of the ink droplet ejection surface of the head main body 220, and extends around the outer periphery of the fixing plate 250. And a side wall portion 245 provided so as to be bent.

  In this embodiment, the fixing portion 242 is provided corresponding to the frame portion 243 provided corresponding to the fixing frame portion 253 of the fixing plate 250, and the opening portion 241 provided corresponding to the fixing beam portion 254 of the fixing plate 250. It is comprised with the beam part 244 which divides | segments. Further, the fixing part 242 including the frame part 243 and the beam part 244 is joined to the joining part 252 of the fixing plate 250.

  As described above, since the liquid ejection surface A of the head body 220 and the cover head 240 are joined without a gap, the recording medium is prevented from entering the gap to prevent the cover head 240 from being deformed and a paper jam. be able to. Further, since the side wall portion 245 of the cover head 240 covers the outer peripheral edge portions of the plurality of head main bodies 220, it is possible to reliably prevent the ink from flowing into the side surfaces of the head main bodies 220.

  Further, as shown in FIGS. 2 and 4, the fixing portion 242 is provided with a support portion 246 provided with a fixing hole 247 for positioning and fixing the cover head 240 to the cartridge case 210. The support portion 246 is bent and provided so as to protrude from the side wall portion 245 in the same direction as the surface direction of the droplet discharge surface. In this embodiment, the cover head 240 is fixed to the cartridge case 210. That is, the cartridge case 210 is provided with a protruding portion 216 that protrudes toward the liquid ejecting surface A and is inserted into the fixing hole 247 of the cover head 240. The protruding portion 216 is provided in the fixing hole 247 of the cover head 240. The cover head 240 is fixed to the cartridge case 210 by inserting and heating and caulking the tip of the protrusion 216.

  In the above-described example, the cover head 240 is bonded to the surface of the fixing plate 250 opposite to the head body 220. However, the present invention is not limited to this. For example, the cover head 240 is bonded to the fixing plate 250. Instead, it may be provided at a predetermined interval or may be provided so as to abut.

  Here, the manufacturing method of the ink jet recording head unit 1 of this embodiment will be described in detail. 7 and 8 are principal part cross-sectional views showing a manufacturing method of an ink jet recording head unit which is an example of the liquid jet head unit of the present invention.

  First, as shown in FIG. 7A, the cartridge case 210 is held by the first jig 400. The first jig 400 is provided with a first reference surface C on which the head reference surface B of the cartridge case 210 is abutted and positioned. That is, the first jig 400 holds the cartridge case 210 in a state where the head reference surface B of the cartridge case 210 is brought into contact with the first reference surface C and positioned. The head reference surface B is a surface on which the flange portion 214 of the cartridge case 210 contacts the carriage 3 as described above.

  Next, as shown in FIG. 7B, the ink jet recording head 2 is held by the second jig 410. The second jig 410 is provided with a second reference surface D on which the liquid ejecting surface A of the ink jet recording head 2 is abutted and positioned. That is, the second jig 410 holds the ink jet recording head 2 in a state where the liquid ejecting surface A of the ink jet recording head 2 is brought into contact with the second reference surface D and positioned.

  In the present embodiment, the liquid ejection surfaces A of the plurality of ink jet recording heads 2 are bonded to the common fixing plate 250 in advance. Accordingly, the plurality of ink jet recording heads 2 are held in the second jig 410 in an integrated state by the fixed plate 250, and the liquid ejection surfaces A of the plurality of ink jet recording heads 2 are in the in-plane direction. Will be aligned. At this time, the second reference surface D is positioned by contacting the surface of the fixed plate 250 opposite to the liquid ejection surface A. Even in such a case, the liquid ejecting surfaces A of the plurality of ink jet recording heads 2 are substantially positioned on the second reference surface D of the second jig 410. The plurality of ink jet recording heads 2 are held by the second jig 410 in an integrated state by the fixed plate 250, and the liquid ejection surfaces A of the plurality of ink jet recording heads 2 are in the in-plane direction. Therefore, the influence of the height variation for each ink jet recording head 2 appears on the surface of the head case 230 of the plurality of ink jet recording heads 2 on the cartridge case 210 side. The correction of the height variation of the plurality of ink jet recording heads 2 will be described in detail later.

  Such a second jig 410 is provided with a plurality of restricting pins 411 protruding from the second reference plane D side. The restriction pin 411 is provided such that the protruding amount of the tip with respect to the second reference surface D can be adjusted. In the present embodiment, the protruding amount of the tip can be adjusted by using the restriction pin 411 as a male screw and screwing the restriction pin 411 into the second jig 410.

  Further, the adhesive 215 is applied on the head case 230 on the side opposite to the liquid ejecting surface A of the ink jet recording head 2 held by the second jig 410.

  Next, as shown in FIG. 8, the ink jet recording head 2 held by the second jig 410 is bonded to the cartridge case 210 held by the first jig 400 via an adhesive 215. At this time, the second jig 410 has the second jig 410 with respect to the first reference plane C of the first jig 400 by the tip of the regulation pin 411 coming into contact with the first jig 400. The second reference plane D of the tool 410 is positioned. Thus, with the head reference surface B of the cartridge case 210 positioned on the first reference surface C and the liquid ejection surface A of the ink jet recording head 2 positioned on the second reference surface D being positioned, The cartridge case 210 and the ink jet recording head 2 can be bonded. The same effect can be obtained even if the regulation pin 411 protrudes from the first jig 400 and comes into contact with the second jig 410. Further, although there are a plurality of restriction pins 411, the contact positions of the restriction pins 411 with the jig need to be aligned on the plane between the plurality of restriction pins 411. If the restriction pin 411 is formed on the first jig 400, the contact positions of the first reference surface B and the plurality of restriction pins 411 are parallel, and the restriction pin 411 is If the second jig 410 is formed, the second reference surface D and the contact positions of the plurality of restricting pins 411 are parallel to each other.

  That is, the head that contacts the first reference surface C by positioning the first reference surface C of the first jig 400 and the second reference surface D of the second jig 410 in advance. Positioning of the reference surface B and the liquid ejection surface A that is in contact with the second reference surface D can be performed. As a result, even if the thickness of each head body 220 or head case 230 varies, for example, by adjusting the regulation pin 411, the adhesive 215 can be used between the head case 230 and the cartridge case 210. Although the adhesive can be held on the head case 230 and the cartridge case 210 by providing a predetermined gap, these variations are absorbed more and each liquid ejection surface A and head reference surface B Can be positioned with high accuracy. Therefore, when the ink jet recording head unit 1 is mounted on the carriage 3 with the head reference surface B of the cartridge case 210 and the liquid ejecting surface A of the ink jet recording head 2 parallel, the liquid is applied to the recording medium S. The ejection surface A can be made parallel without being inclined, and the printing quality can be improved. In particular, when a plurality of ink jet recording head units 1 are provided as in the ink jet recording apparatus I described above, each ink jet recording head unit 1 is manufactured by the above manufacturing method. The distance between the head reference surface B and the liquid ejection surface A of the head unit 1 can be kept uniform, and the print quality can be further improved.

  Since the regulation pin 411 of the second jig 410 is provided so that the amount of protrusion can be adjusted, the thickness of the adhesive 215 that bonds the cartridge case 210 and the ink jet recording head 2 can be adjusted. It is possible to prevent the adhesive 215 from flowing out to the piezoelectric element 300 or the like side of the ink jet recording head 2 and inhibiting the displacement of the piezoelectric element 300, and the ink flow in the nozzle opening 21 or the ink supply system can be prevented. Inhibition by the adhesive 215 can be prevented.

  Here, in the present embodiment, the fixed plate 250 on which the liquid ejection surfaces A of the plurality of ink jet recording heads 2 are fixed is brought into contact with the second reference surface D of the second jig 410. For example, as shown in FIG. 9, the liquid ejecting surface A of each ink jet recording head 2 is brought into direct contact with the second reference surface D of the second jig 410. Also good. Further, the plurality of ink jet recording heads 2 may be directly joined to the cover head 240 without the fixing plate 250. Even in such a case, the positioning of the liquid ejecting surface A of each ink jet recording head 2 and the head reference surface B of the cartridge case 210 can be performed with high accuracy.

(Other embodiments)
As mentioned above, although Embodiment 1 of this invention was demonstrated, the basic composition of this invention is not limited to what was mentioned above. For example, in the first embodiment described above, in this embodiment, the method for holding the cartridge case 210 by the first jig 400 and the method for holding the ink jet recording head 2 by the second jig 410 are particularly referred to. Although these holding methods are not particularly limited, for example, the first jig 400 and the second jig 410 may hold the head reference surface B and the liquid ejection surface A by suction, respectively. Further, the first jig 400 and the second jig 410 may mechanically hold the cartridge case 210 and the ink jet recording head 2 by a chuck or the like. Here, for example, as shown in FIG. 10, the side opposite to the liquid ejecting surface A of the ink jet recording head 2 is pressed so that the liquid ejecting surface A of the ink jet recording head 2 is moved to the second jig 410. You may make it provide the press pin 420 made to contact | abut to the 2nd reference plane D with a predetermined pressure. As described above, the inkjet recording head 2 is pressed against the second jig 410 by the pressing pin 420, and the inkjet recording head 2 is held by the second jig 410. When the cartridge case 210 is bonded to the head 2, it is possible to reliably prevent the liquid ejection surfaces A of the respective ink jet recording heads 2 from being inclined. In particular, as shown in FIG. 9, it is effective when the second jig 410 is brought into direct contact with the liquid ejection surfaces A of the plurality of ink jet recording heads 2.

  In the first embodiment described above, the ink jet recording head 2 having the flexural vibration type piezoelectric element 300 is exemplified. However, the present invention is not limited to this. For example, the piezoelectric material and the electrode forming material are alternately laminated to form the shaft. Application to head units having ink jet recording heads of various structures, such as longitudinal vibration type ink jet recording heads that expand and contract in the direction and ink jet recording heads that eject ink droplets by bubbles generated by heat generation from heating elements, etc. Needless to say, you can.

  Note that the head unit having an ink jet recording head that discharges ink as a liquid ejecting head has been described as an example, but the present invention is intended for a method of manufacturing a liquid ejecting head unit having a liquid ejecting head widely. Examples of the liquid ejecting head include a recording head used for an image recording apparatus such as a printer, a color material ejecting head used for manufacturing a color filter such as a liquid crystal display, an organic EL display, and an electrode formation such as an FED (field emission display). Electrode material ejecting heads used in manufacturing, bioorganic matter ejecting heads used in biochip production, and the like.

1 is a schematic diagram of an ink jet recording apparatus according to Embodiment 1. FIG. FIG. 3 is an exploded perspective view of the head unit according to the first embodiment. FIG. 3 is an assembled perspective view of the head unit according to the first embodiment. FIG. 3 is a cross-sectional view of a main part of the head unit according to the first embodiment. FIG. 3 is an exploded perspective view of the recording head according to the first embodiment. FIG. 3 is a cross-sectional view of the recording head according to the first embodiment. FIG. 5 is a cross-sectional view of the main part showing the method for manufacturing the head unit according to the first embodiment. FIG. 5 is a cross-sectional view of the main part showing the method for manufacturing the head unit according to the first embodiment. FIG. 7 is a cross-sectional view of a main part showing another method for manufacturing the head unit according to Embodiment 1. It is principal part sectional drawing which shows the manufacturing method of the head unit which concerns on other embodiment.

Explanation of symbols

  A liquid ejecting surface, B head reference surface, C first reference surface, D second reference surface, I ink jet recording apparatus (liquid ejecting apparatus), 1 ink jet recording head unit (liquid ejecting head unit), 2 ink jet Type recording head (liquid ejecting head), 3 carriage, 10 flow path forming substrate, 12 pressure generating chamber, 100 reservoir, 210 cartridge case (holding member), 220 head body, 230 head case, 240 cover head, 250 fixing plate, 300 piezoelectric element, 400 first jig, 410 second jig, 420 pressing pin

Claims (3)

A plurality of liquid ejecting heads each including a liquid ejecting head body that ejects liquid from a nozzle opening and a head case that is joined to the opposite side of the liquid ejecting surface of the liquid ejecting head body; A holding member that is integrally joined to the head case via an adhesive, and the holding member is provided with a head reference surface that is positioned in contact with a fixing member that holds the holding member. A method for manufacturing a liquid jet head unit, comprising:
The holding member is held by a first jig having a first reference surface that is positioned by contacting the head reference surface, and the liquid ejecting head is positioned by contacting the liquid ejecting surface. The holding member and the liquid ejecting head are held in a second jig having a second reference surface that is positioned so as to be adjustable relative to the first reference surface. A method of manufacturing a liquid jet head unit, wherein the liquid jet head unit is bonded via   Before joining the plurality of head main bodies and the holding member, the liquid ejecting surfaces of the plurality of head main bodies are joined to a common fixing plate, and the liquid ejecting surfaces of the liquid ejecting heads are joined to the fixing plate. The method of manufacturing a liquid jet head unit according to claim 1, wherein the liquid jet head unit is positioned by being brought into contact with the second reference plane via   The holding member is a cartridge case for supplying the liquid in the liquid storage portion for each liquid ejecting head, and a flange portion is provided on a side surface of the cartridge case, and a surface of the flange portion in the same direction as the liquid ejecting surface. 3. The method of manufacturing a liquid jet head unit according to claim 1, wherein is a head reference surface.

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