JP2012111098A - Liquid injection head unit and method of manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid injection head unit reduced in manufacturing error, and a method of manufacturing the same.SOLUTION: In the liquid injection head unit 17 including a liquid injection head 18 injecting a liquid from nozzles in a nozzle array 56 with the plurality of nozzles 51 arrayed, and a mounting frame material 26 onto which the liquid injection head is mounted in a state that it is positioned by a positioning means 58, fixing members 32 fixed to the mounting frame material are respectively provided on both end parts of the liquid injection head in a direction along the nozzle array, a groove part 66 into which a positioning pin fits is formed in a first surface 32a of each fixing member opposite to the mounting frame material, corresponding to a positioning pin 65 disposed on the positioning means in a state that it dents from the first surface toward a second surface 32b on the mounting frame material side, and the groove part is formed to be gradually widened from the inner side laterally in a direction along the nozzle array.

Description

  The present invention relates to a liquid ejecting head unit used in a liquid ejecting apparatus such as an ink jet recording apparatus, and a manufacturing method thereof.

  The liquid ejecting apparatus is an apparatus that includes a liquid ejecting head capable of ejecting liquid as droplets and ejects various liquids from the liquid ejecting head. A typical example of the liquid ejecting apparatus is an ink jet recording that includes an ink jet recording head (hereinafter referred to as a recording head) and performs recording by ejecting liquid ink as ink droplets from the nozzle of the recording head. An image recording apparatus such as an apparatus (printer) can be given. In recent years, the present invention is applied not only to this image recording apparatus but also to various manufacturing apparatuses such as a display manufacturing apparatus. The recording head for the image recording apparatus ejects liquid ink, and the color material ejecting head for the display manufacturing apparatus ejects solutions of R (Red), G (Green), and B (Blue) color materials. The electrode material ejecting head for the electrode forming apparatus ejects a liquid electrode material, and the bioorganic matter ejecting head for the chip manufacturing apparatus ejects a bioorganic solution.

  In recent years, the above-described printer has a configuration (multihead type) in which a plurality of recording heads each having a nozzle row in which a plurality of nozzles are arranged are arranged and fixed on an attachment frame member such as a base portion, and this is used as one head unit. Some are employed (for example, see Patent Document 1). In order to manufacture such a recording head unit, for example, as shown in FIG. 21A, first, the mounting frame member 100 is placed on the work set base 101, and recording is performed inside the mounting frame member 100. The first recording head 102 is inserted into the frame so that a part of the head 102 opposite to the nozzle opening surface 103 is accommodated. Then, the fixing members 104 positioned on both ends of the recording head 102 are brought into contact with the mounting surfaces of the mounting frame member 100, the vertical position of the recording head 102 with respect to the mounting frame member 100 is determined, and each recording head is similarly recorded. The heads 102 are sequentially placed on the mounting frame member 100. In this state, the alignment mark formed on the nozzle opening surface 103 is recognized by photographing the nozzle opening surface 103 of the recording head 102 with the camera 105 provided in the upper portion, and the alignment mark is set to a predetermined position. The horizontal position of each recording head 102 is corrected. When the recording head 102 is held at a predetermined position with respect to the mounting frame member 100, the recording head 102 and the mounting frame member 100 are temporarily fixed with an adhesive or the like, and then finally fixed with screws or the like.

  Here, the position correction of the recording head 102 is performed using, for example, an adjustment pin 106 as shown in FIG. Specifically, first, the adjustment pin 106 is inserted into the adjustment hole 107 opened in the fixing member 104 from above. In this state, the adjustment pin 106 is moved in the horizontal direction, and the adjustment pin 106 is brought into contact with the inner wall of the adjustment hole 107 to press the fixing member 104 in the horizontal direction. Thereby, the fixing member 104 can be moved in a desired direction. In such a configuration, the diameter of the adjustment pin 106 is made smaller than the diameter of the adjustment hole 107 so that the adjustment pin 106 can be smoothly inserted into the adjustment hole 107, and a clearance is provided therebetween. ing. However, the provision of this clearance has a problem that the position correction accuracy of the recording head 102 is lowered. That is, even if the adjustment pin 106 is moved by this clearance, it does not contact the inner wall of the adjustment hole 107 and the fixing member 104 does not move. That is, the fixing member 104 does not follow the movement of the adjustment pin 106. As a result, a difference is generated between the movement amount of the adjustment pin 106 and the movement amount of the fixing member 104. For this reason, as shown in FIG. 21C, in the cross section, the adjustment pin 106 having a tapered portion that is expanded from the tip having a diameter smaller than the diameter of the adjustment hole 107 to be larger than the diameter of the adjustment hole 107 is formed. A method of using it has been proposed. By moving the adjustment pin 106 by bringing the tapered portion of the adjustment pin 106 into contact with the edge of the adjustment hole 107, the fixing member 104 follows the movement of the adjustment pin 106 and is parallel to the mounting frame member 100. Can be moved.

JP 2010-36346 A

  However, in the recording head position correction as described above, since the position of the positioned recording head needs to be held, it is necessary to press the fixing member from above. Due to this pressing, as shown in FIG. 21 (c), the fixing member and the mounting frame member may be deformed. As described above, in the state where the fixing member and the mounting frame member are deformed, the recording head cannot be accurately positioned. For this reason, manufacturing variations of the recording head unit have occurred.

  SUMMARY An advantage of some aspects of the invention is that it provides a liquid jet head unit with a small manufacturing error and a manufacturing method thereof.

The liquid jet head unit of the present invention has been proposed to achieve the above object, and a liquid jet head that jets liquid from the nozzles in a nozzle row in which a plurality of nozzles are arranged, and the liquid jet head includes: A liquid ejecting head unit including a mounting frame member attached in a state of being positioned by positioning means,
Fixing members that are fixed to the mounting frame member are provided at both ends of the liquid jet head in the direction along the nozzle row, respectively.
In each fixing member, on the first surface opposite to the mounting frame member, corresponding to the positioning pin provided in the positioning means, the positioning pin can be fitted from the side in the nozzle row direction. Are provided in a state of being depressed from the first surface toward the second surface on the mounting frame member side,
The groove is characterized by being formed in a state in which the width gradually increases from the inside toward the side in the direction along the nozzle row.

  According to this configuration, the fixing members that are fixed to the mounting frame member are provided at both ends in the direction along the nozzle row of the liquid ejecting head, and the first fixing member that is opposite to the mounting frame member is provided on each fixing member. In correspondence with the positioning pins provided in the positioning means, the groove portions into which the positioning pins can be fitted are recessed from the first surface toward the second surface on the mounting frame material side, respectively. Since the groove is formed in a state in which the width gradually increases from the inside toward the side in the direction along the nozzle row, the positioning pins are fitted to the grooves on both sides to grip the liquid ejecting head. In this state, the liquid ejecting head can be positioned by moving the positioning pin. For this reason, a difference hardly occurs between the movement amount of the positioning pin and the movement amount of the liquid ejecting head, the liquid ejecting head can be caused to follow the positioning pin, and the liquid ejecting head can be accurately positioned. In addition, since the positioning pin is in point contact with the inner wall of the groove portion and there is no need to press the fixing member from above, the fixing member and the mounting frame material are not easily deformed. As a result, manufacturing errors of the liquid jet head unit can be suppressed.

In the above-described configuration, it is preferable that the fixing member is configured to be detachably fixed to the liquid ejecting head.
According to this configuration, even in a configuration in which the fixing member is bonded to the mounting frame member, the liquid ejecting head can be detached from the fixing member, so that replacement or repair of the liquid ejecting head is facilitated.

In each of the above configurations, it is desirable that the maximum width of the groove is larger than the diameter of the positioning pin.
According to this configuration, the positioning pin can be stably fitted into the groove, and the liquid ejecting head can be positioned more accurately.

And a liquid ejecting head that ejects liquid from the nozzles in a nozzle row in which a plurality of nozzles are arranged, and a mounting frame material to which the liquid ejecting head is attached, and positioning the liquid ejecting head with respect to the mounting frame material A method of manufacturing a liquid jet head unit that is positioned and attached using a means,
Fixing members that are fixed to the mounting frame member are provided at both ends of the liquid jet head in the direction along the nozzle row,
In each fixing member, on the first surface opposite to the mounting frame member, corresponding to the positioning pin provided in the positioning means, the positioning pin can be fitted from the side in the nozzle row direction. Are provided in a state of being depressed from the first surface toward the second surface on the mounting frame member side,
The groove is formed in a state in which the width gradually increases from the inside to the side in the direction along the nozzle row,
The positioning pins of the positioning means are fitted into the respective groove portions, and the liquid ejecting head is gripped by urging inward from both sides by the respective positioning pins, and the bottom portion of the groove portion is moved to the mounting frame material side by the positioning pins. In the pressed state, the liquid ejecting head is positioned within the mounting surface of the mounting frame member.

FIG. 3 is a perspective view illustrating a part of the internal configuration of the printer. It is a front view of a printer. It is a top view of a printer. FIG. 3 is a right side view of the printer. It is a top view of a carriage assembly. It is a front view of a carriage assembly. It is a right view of a carriage assembly. It is a bottom view of a carriage assembly. It is the sectional view on the AA line in FIG. 2A is a perspective view of a recording head unit, and FIG. 2B is a perspective view of a state in which a flow path member is attached to the recording head unit. FIG. 6 is a plan view of a state in which a flow path member is attached to the recording head unit. FIG. 3 is a front view of a state in which a flow path member is attached to the recording head unit. FIG. 6 is a bottom view of a state in which a flow path member is attached to the recording head unit. FIG. 6 is a right side view of a state in which a flow path member is attached to the recording head unit. It is the figure which represented the subcarriage typically, (a) Back view, (b) Plan view, (c) Front view. (A) Bottom view of recording head, (b) Side view of recording head, (c) Front view of recording head. FIG. 3 is a front view of a state where a recording head unit is set in an alignment apparatus. FIG. 4 is a right side view of a state where a recording head unit is set in the alignment apparatus. FIG. 4 is a plan view of a recording head unit in contact with a reference pin. It is a camera's photographing figure explaining position alignment of a recording head. It is explanatory drawing of manufacture of the recording head unit by the conventional method.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described with reference to the accompanying drawings. In the embodiments described below, various limitations are made as preferred specific examples of the present invention. However, the scope of the present invention is not limited to the following description unless otherwise specified. However, the present invention is not limited to these embodiments. In the following, a case where the present invention is applied to an ink jet recording apparatus (hereinafter abbreviated as a printer) will be exemplified as the liquid ejecting apparatus of the present invention.

  1 is a perspective view showing a part of the internal configuration of the printer 1, FIG. 2 is a front view of the printer 1, FIG. 3 is a plan view of the printer 1, and FIG. 4 is a right side view of the printer 1. The illustrated printer 1 ejects ink, which is a kind of liquid, toward a recording medium (a kind of landing target) such as a recording sheet, cloth, film (not shown). The printer 1 has a carriage assembly 3 (a type of recording head unit holding member) inside a frame 2 in a main scanning direction (indicated by reference numeral X in FIG. 1), which is a direction intersecting the feeding direction of the recording medium. It is mounted so that it can reciprocate. A pair of upper and lower guide rods 4 a and 4 b that are elongated along the longitudinal direction of the frame 2 are attached to the inner wall of the frame 2 on the back side of the printer 1 in parallel with a space therebetween. The carriage assembly 3 is slidably supported with respect to the guide rods 4a and 4b by fitting the guide rods 4a and 4b to a bearing portion 7 (see FIG. 7) provided on the back side thereof. Has been.

  A carriage motor 8 as a drive source for moving the carriage assembly 3 is disposed on the back side of the frame 2 and on one end side in the main scanning direction X (right end portion in FIG. 3). The drive shaft of the carriage motor 8 protrudes from the back surface side to the inner surface side of the frame 2, and a drive pulley (not shown) is connected to the tip portion. The drive pulley is rotated by driving the carriage motor 8. In addition, an idle pulley (not shown) is provided at a position opposite to the drive pulley in the main scanning direction X (left end portion in FIG. 3). A timing belt 9 is stretched around these pulleys. A carriage assembly 3 is connected to the timing belt 9. When the carriage motor 8 is driven, the timing belt 9 rotates as the drive pulley rotates, and the carriage assembly 3 moves in the main scanning direction X along the guide rods 4a and 4b.

  On the inner wall on the back surface of the frame 2, a linear scale 10 (encoder film) is stretched in parallel with the guide rods 4a and 4b along the main scanning direction X. The linear scale 10 is a band-shaped (band-shaped) member made of a transparent resin film. For example, a plurality of opaque stripes crossing the band width direction are printed on the surface of a transparent base film. Each stripe has the same width and is formed at a constant pitch in the longitudinal direction of the band. A linear encoder for optically reading the stripe of the linear scale 10 is provided on the back side of the carriage assembly 3 (not shown). The linear encoder is composed of, for example, a pair of light-emitting elements and light-receiving elements arranged opposite to each other, and outputs encoder pulses according to the difference between the light-receiving state at the transparent portion of the linear scale 10 and the light-receiving state at the stripe portion. It is like that. That is, the linear encoder is a kind of position information output means, and outputs an encoder pulse corresponding to the scanning position of the carriage assembly 3 as position information in the main scanning direction X. Accordingly, a control unit (not shown) of the printer 1 controls the recording operation on the recording medium by the recording head unit 17 while recognizing the scanning position of the carriage assembly 3 based on the encoder pulse from the linear encoder. be able to. In the printer 1, the carriage assembly 3 moves from the home position on one end side in the main scanning direction X (standby position when the carriage assembly 3 is not driven) toward the opposite end (full position). So-called bidirectional recording processing for recording characters, images and the like on the recording medium in both directions of the forward movement and the backward movement of the carriage assembly 3 returning from the full position to the home position side is possible. .

  As shown in FIG. 3, the carriage assembly 3 is connected with an ink supply tube 14 for supplying ink to the recording head unit 17 and a signal cable 15 for supplying a signal such as a drive signal. . In addition, although not shown, the printer 1 is provided with a cartridge mounting unit to which an ink cartridge (liquid supply source) storing ink is detachably mounted, a transport unit for transporting a recording medium, and the like.

  5 is a plan (top) view of the carriage assembly 3, FIG. 6 is a front view of the carriage assembly 3, FIG. 7 is a right side view of the carriage assembly 3, and FIG. 8 is a bottom view of the carriage assembly 3. FIG. 9 is a cross-sectional view taken along line AA in FIG. FIG. 5 shows a state where the carriage cover 13 is removed. The carriage assembly 3 includes a carriage main body 12 in which a recording head unit 17 (a kind of liquid ejecting head unit in the present invention), which will be described later, and a flow path member 24 connected to the upper portion of the recording head unit 17 are mounted. It is a hollow box-like member that is composed of a carriage cover 13 that closes the upper opening of the main body 12 and can be divided into upper and lower parts. The carriage main body 12 includes a substantially rectangular bottom plate portion 12a and side wall portions 12b standing upward from four outer peripheral edges of the bottom plate portion 12a, and a space surrounded by the bottom plate portion 12a and the side wall portions 12b. The recording head unit 17 and the flow path member 24 are accommodated therein. As shown in FIG. 8, the bottom plate portion 12a is provided with a bottom opening 19 for exposing the nozzle forming surface 53 (see FIG. 16) of each recording head 18 of the accommodated recording head unit 17. In a state where the recording head unit 17 is housed in the carriage body 12, the nozzle forming surface 53 of each recording head 18 is below the bottom of the carriage body 12 from the bottom opening 19 of the bottom plate 12a (recording during recording operation). Projects to the medium side.

  An eccentric cam 21 (see FIG. 9) for adjusting the posture of the recording head unit 17 and the flow path member 24 accommodated in the carriage main body 12 is provided between the carriage main body 12 and the recording head unit 17 and the flow path member 24. ) Are provided. The carriage body 12 is provided with a plurality of adjustment levers 20 for rotating these eccentric cams 21. By operating these adjusting levers 20, the eccentric cam 21 rotates and the cam diameter from the center of rotation to the outer peripheral surface increases or decreases. By the increase or decrease of this cam diameter, the recording head unit 17 accommodated in the carriage body 12 and the flow of the cam. The position of the road member 24 with respect to the carriage body 12 and the posture such as the inclination can be adjusted.

  The flow path member 24 is a box-shaped member that is made of synthetic resin or the like and is thin in the vertical direction, and is connected to the upper portion of the recording head unit 17 (see FIG. 10B, FIG. 11 and the like). Inside the flow path member 24, ink distribution flow paths (not shown) of respective colors corresponding to flow path connection portions 38 of sub tanks 37 (described later) of the recording heads 18 are formed. Further, a tube connecting portion 34 is provided on the upper surface of the flow path member 24. A plurality of inlets 39 corresponding to the inks of the respective colors are provided inside the tube connecting portion 34 (see FIG. 11). Each introduction port 39 communicates with the corresponding color ink distribution channel. When the ink supply tube 14 is connected to the tube connecting portion 34, the ink supply paths of the respective colors in the ink supply tube 14 and the corresponding inlets 39 communicate with each other in a liquid-tight state. As a result, the ink of each color sent from the ink cartridge side through the ink supply tube 14 is introduced into the ink distribution channel in the channel member 24 through the introduction port 39. In the four corners of the flow path member 24, flow path insertion holes (not shown) corresponding to the fixing screw holes 33 (see FIG. 10A) of the sub-carriage 26 pass through the plate thickness direction, respectively. Is formed. When the flow path member 24 is fixed to the sub-carriage 26, the flow path member fixing screw 45 is fixed (screwed) to the fixing screw hole 33 through the flow path insertion hole.

  Further, on the lower surface of the flow path member 24, a connection flow path 40 extending downward is provided at a position corresponding to the flow path connection portion 38 of the sub tank 37 of each recording head 18 (see FIG. 12). ). The connection flow path 40 is a hollow cylindrical member in which a lead-out path (not shown) communicating with the corresponding color ink distribution flow path is formed, and the flow path of the sub tank 37 of each recording head 18. It is configured to be inserted into the connecting portion 38 and connected in a liquid-tight state. Then, the ink that has passed through the ink distribution flow path inside the flow path member 24 is supplied to the sub tank 37 of each recording head 18 via the connection flow path 40 and the flow path connection portion 38. That is, the ink supply tube 14 and the sub tank 37 are connected to each other with the flow path member 24 interposed therebetween.

  Next, the recording head unit 17 will be described. FIG. 10A is a perspective view of the recording head unit 17, and FIG. 10B is a perspective view of a state in which the flow path member 24 is attached to the recording head unit 17. 11 to 14 are views showing a state in which the flow path member 24 is attached to the recording head unit 17. FIG. 11 is a plan view, FIG. 12 is a front view, FIG. 13 is a bottom view, and FIG. is there. FIG. 15 is a diagram showing a simplified configuration of a sub-carriage 26 (a kind of mounting frame material according to the present invention) serving as a base of the recording head unit 17 for ease of explanation. a) is a back view, FIG. 15B is a plan view, and FIG. 15C is a front view. 15 schematically shows the sub-carriage 26, the shape, positional relationship, size, and the like of each part may be different from actual ones.

  The recording head unit 17 is formed by unitizing a plurality of recording heads 18 and the like, and the recording heads 18 and the recording heads 18 are positioned by an alignment device 58 (a kind of positioning means in the present invention) described later. And a plurality of sub-carriages 26 attached in parallel. The sub-carriage 26 is formed in a frame shape from metal, for example, aluminum, and is formed so that at least a part of the recording head 18 (mainly the sub-tank 37) can be accommodated in the inner accommodating portion 35 (see FIG. 15). A spacer 32 (corresponding to a fixing member in the present invention, which will be described later) attached to the recording head 18 is provided on the back surface side (side facing the recording medium) of the outer frame portion 26a that forms the outer periphery of the housing portion 35 on all sides. A fixed head mounting portion 59 (a region indicated by hatching in FIG. 15A) is provided. Since the recording head unit 17 of the present embodiment includes five recording heads 18, corresponding to this, five head mounting portions 59 are formed on the outer frame portions 26 a on both sides on both sides of the accommodating portion 35. is doing. These head mounting portions 59 are formed so as to be located on the same plane. The head mounting portion 59 has a fastening hole (also a female screw portion, not shown) corresponding to the spacer insertion hole 29 (female screw portion) of the spacer 32 fixed to each recording head 18. Yes. The fixing holes and the spacer insertion holes 29 are aligned to fix (screw) the screws, and the recording head 18 is fixed to the sub-carriage 26 via the spacers 32.

  A positioning reference portion 62 with which a reference pin 61 (described later) of the alignment device 58 abuts is provided on the surface of the sub carriage 26 on the head mounting portion 59 side. In the present embodiment, a total of three positioning reference portions 62 are provided on the outer frame portion 26 a of the sub-carriage 26. Specifically, in the outer frame portion 26a on one side where the head mounting portion 59 is formed (one side in a direction orthogonal to the head juxtaposition direction and on the left side in FIG. 15A), the head mounting portion 59 is provided. The outer side of the outer frame portion 26a is formed with one positioning reference portion 62 and the head mounting portion 59 is formed on the other side (the other side in the direction perpendicular to the head juxtaposition direction). In the outer frame portion 26a in the right side of FIG. 15A, two positioning reference portions 62 are formed outside the head mounting portion 59 and at both ends in the longitudinal direction of the outer frame portion 26a. Therefore, in a plan view from the back side, in a virtual plane S (a plane indicated by a two-dot chain line in FIG. 19) of a polygon (triangular in the present embodiment) having three positioning reference portions 62 as apexes, The center of gravity G (black circle in FIG. 19) of the recording head unit 17 is located. These positioning reference portions 62 are aligned on the same plane as the head mounting portion 59 described above. It should be noted that the head mounting portion 59 and the positioning reference portion 62 of the present embodiment are formed in a state in which a step is provided by projecting toward the recording medium side from the peripheral portion (other portion on the lower surface side of the sub-carriage 26) ( 15 (c), FIG. 18, etc.), it can be formed on a flat surface without a step. In any case, each positioning reference portion 62 and each head mounting portion 59 are aligned on the same surface, for example, through a polishing process on the same stage.

  Further, on the upper surface of the sub-carriage 26 (the surface opposite to the positioning reference portion 62 and the upper end surface of the outer frame portion 26a, which corresponds to the second surface in the present invention), the positioning reference portions 62 are arranged on the side. At the corresponding positions, contact surfaces 64 are provided, on which push-up probes 63 (described later) for urging the sub-carriage 26 toward the reference pins 61 of the alignment device 58 are contacted. In the present embodiment, the contact surface 64 is slightly projected toward the opposite side of the positioning reference portion 62 from the peripheral portion (the other portion on the upper surface side of the outer sub-carriage 26) to form a step. It is formed in a state (see FIG. 15C, etc.).

  Further, as shown in FIG. 10A, a fixing screw hole 33 is opened in the outer frame portion 26 a of the sub-carriage 26 at a position corresponding to the flow passage insertion hole of the flow passage member 24. As described above, the fixing screw hole 33 is fastened (screwed) to the channel member fixing screw 45 through the channel insertion hole of the channel member 24. Thereby, the flow path member 24 is attached to the upper part of the sub-carriage 26. As shown in FIGS. 10 to 13, three of the four outer frame portions 26 a of the sub-carriage 26 are provided with ear-piece-like flange portions 30 projecting sideways. In the flange portion 30, insertion holes 31 are formed corresponding to three mounting screw holes (not shown) formed in the bottom plate portion 12 a of the carriage body 12. Then, the head unit fixing screw 22 is fixed to the mounting screw hole through the insertion hole 31 (screw-engagement) in a state where the corresponding insertion hole 31 is aligned with each mounting screw hole of the bottom plate portion 12 a of the carriage body 12. ), The recording head unit 17 is accommodated and fixed in the carriage body 12. Note that, as described above, the position of the recording head unit 17 relative to the carriage main body 12 is determined by the operation of the adjustment lever 20 before the recording head unit 17 and the flow path member 24 are permanently fixed to the carriage main body 12. And posture such as tilt is adjusted. In FIG. 15 and subsequent figures, the flange portion 30, the fixing screw hole 33, and the like are omitted for ease of explanation.

  Next, the recording head 18 will be described. 16A is a bottom view of the recording head 18, FIG. 16B is a side view of the recording head 18, and FIG. 16C is a front view of the recording head 18. Since the basic structure and the like are common to the recording heads 18, one of the five recording heads 18 attached to the sub-carriage 26 is shown as a representative.

  The recording head 18 includes a flow path unit that forms an ink flow path including a pressure chamber that communicates with the nozzle 51, and a pressure generating means such as a piezoelectric vibrator or a heating element that causes pressure fluctuations in the ink in the pressure chamber (both are shown in the figure). (Not shown) is provided in the head case 52. The recording head 18 applies a drive signal from the control unit side of the printer 1 to the pressure generating means to drive the pressure generating means, thereby ejecting ink from the nozzles 51 to land on a recording medium such as recording paper. It is configured to perform a recording operation. A plurality of nozzles 51 for ejecting ink are provided on the nozzle forming surface 53 of the recording head 18 to form a nozzle row 56 (a kind of nozzle group). The nozzle row 56 is arranged in a direction orthogonal to the nozzle row 56. It is formed side by side. One nozzle row 56 includes, for example, 360 nozzle openings opened at a pitch of 360 dpi. 16A and 19, only the nozzles 51 positioned at both ends of one nozzle row 56 (upper side in FIG. 16A) among the nozzles 51 constituting the two nozzle rows 56 are emphasized. The remaining nozzles 51 are omitted.

  The head case 52 is a hollow box-like member, and a flow path unit is fixed to the tip side of the head case 52 with the nozzle forming surface 53 exposed. Further, the pressure generating means and the like are accommodated in the accommodating space formed inside the head case 52, and the base end surface side opposite to the nozzle forming surface 53 (that is, the upper surface side, opposite to the recording medium). ) Is equipped with a sub tank 37 for supplying ink to the flow path unit side. Further, flange portions 52 a that protrude toward the side are formed at both ends in the direction along the nozzle row 56 on the upper surface side of the head case 52. A spacer 32 is detachably fixed to the flange portion 52a with a screw or the like.

  The spacer 32 is a member made of synthetic resin or the like formed in a rectangular parallelepiped shape connected to the head mounting portion 59, and the upper surface (sub tank 37) of the flange portions 52 a (see FIG. 16) on both sides with respect to one recording head 18. 2 in total, one on each side surface). The surface of the spacer 32 that is fixed to the head mounting portion 59 is formed in substantially the same area as the head mounting portion 59. Further, in each spacer 32, the first surface 32 a opposite to the sub-carriage 26 corresponds to the alignment adjustment pin 65 (corresponding to the positioning pin in the present invention, which will be described later) of the alignment device 58. 65 is provided with a groove 66 that can be fitted from the side in the nozzle row direction. These groove portions 66 are provided in a state of being depressed (or penetrating) from the surface opposite to the sub-carriage 26 toward the second surface 32 b on the sub-carriage 26 side, and along the nozzle row 56. In the direction, the width gradually increases from the inside toward the side. In the present embodiment, the groove 66 is formed in a V-shape spreading from the inside to the outside as seen from the nozzle forming surface 53 side. The maximum width of the groove 66 (the opening width of the V-shaped groove 66 on the side surface of the spacer 32) is formed to be larger than the diameter of the alignment adjustment pin 65. For this reason, when the alignment adjustment pin 65 is inserted into the groove portion 66 and the recording head 18 is clamped from both sides by the alignment adjustment pin 65, the alignment adjustment pin 65 is pointed on a part of the inner wall that defines the groove portion 66. Contact. In this state, the position of the recording head 18 with respect to the sub-carriage 26 is adjusted. Further, on both sides of the groove portion 66 of the spacer 32, two spacer insertion holes 29 through which screws can be screwed pass vertically. The spacer 32 can be fixed to the subcarriage 26 by screwing a screw into the fixing hole of the subcarriage 26 through the spacer insertion hole 29.

  The sub tank 37 is a member that introduces ink from the flow path member 24 to the pressure chamber side of the recording head 18. The sub-tank 37 has a self-sealing function for controlling the introduction of ink into the pressure chamber side by opening and closing a valve in accordance with an internal pressure fluctuation. A flow path connection portion 38 to which the connection flow path 40 of the flow path member 24 is connected is provided at both ends of the rear end surface (upper surface) of the sub tank 37 in the nozzle row direction (see FIG. 10A). A ring-shaped packing (not shown) is fitted into the flow path connecting portion 38, and liquid tightness with the connection flow path 40 is ensured by this packing. In addition, a driving board (not shown) for supplying a driving signal to the pressure generating means is provided inside the sub tank 37, and a wiring member (not shown) electrically connected to each driving board. Are pulled out to the rear end face side of the sub-tank 37, respectively. By connecting the wiring member to the signal cable 15, a driving signal or the like sent from the control unit of the printer 1 through the signal cable 15 can be supplied to the pressure generating means side through the driving substrate. it can.

  Next, an alignment device 58 used for positioning the recording head 18 and attaching it to the sub-carriage 26 will be described with reference to the drawings. 17 is a front view of the alignment apparatus 58 with the recording head unit 17 set, FIG. 18 is a right side view of the alignment apparatus 58 with the recording head unit 17 set, and FIG. 3 is a plan view of the head unit 17. FIG.

  As shown in FIGS. 17 and 18, the alignment device 58 according to the present embodiment positions a bottom plate 69 (surface plate), a sub-carriage gripping mechanism 72 that fixes the sub-carriage 26, and positioning of the recording head 18 with respect to the sub-carriage 26. The head positioning mechanism 71 to be performed and a support frame 70 that supports the head positioning mechanism 71 are roughly configured. The bottom plate 69 is a plate member that forms the bottom of the alignment device 58, and the sub-carriage gripping mechanism 72 and the support frame 70 are disposed on the top surface. The support frame 70 is a rigid support member for supporting the head positioning mechanism 71, and includes a columnar side support frame 70b positioned on both sides of the sub-carriage gripping mechanism 72, and the side support frames 70b. The upper support frame 70a is constructed between the side support frames 70b on both sides at the upper end. Further, the upper support frame 70a is formed in a bowl shape extending forward from the upper end portion of the side support frame 70b, and the head positioning mechanism 71 is disposed in this collar portion (overhang portion). In addition, a front and rear movement drive unit (not shown) provided with wheels and the like is provided at the lower end of the side support frame 70b to enable the support frame 70 to move in the front and rear direction. As a result, the head positioning mechanism 71 is also movable in the front-rear direction along with the support frame 70.

  The sub-carriage gripping mechanism 72 includes a plurality of sub-carriage support portions 79, a plurality of reference pins 61 that are respectively disposed at the tip portions of the plurality of sub-carriage support portions 79, and a position below the plurality of reference pins 61. And a plurality of push-up probes 63. The sub-carriage support portion 79 is a member including a leg portion standing on the bottom plate 69 and a tip portion extending perpendicularly from the upper end portion of the leg portion toward the inside (sub-carriage 26 side). As will be described later, this is a member having such a rigidity that it does not deform even when the sub-carriage 26 is urged by the push-up probe 63. A reference pin 61 is formed on the lower surface of the distal end portion of the sub-carriage support portion 79 so as to face downward. The reference pin 61 is a protrusion that contacts the positioning reference portion 62 of the sub-carriage 26, and is formed of a member having a rigidity that does not deform even when the sub-carriage 26 is biased. In this embodiment, three reference pins 61 and a sub-carriage support portion 79 are arranged corresponding to the three positioning reference portions 62 of the sub-carriage 26. Note that the tip positions of the protrusions of these three reference pins 61 are aligned on the same plane. These reference pins 61 define the attitude of the sub-carriage 26 during alignment with respect to the head positioning mechanism 71.

  A push-up probe 63 is disposed immediately below the reference pin 61 (on the bottom plate 69 side) and on the opposite side of the sub-carriage 26 during alignment. The push-up probe 63 is a member that abuts the tip 63a at a position corresponding to the abutment surface 64 of the subcarriage 26 and biases the subcarriage 26 upward. Specifically, the push-up probe 63 has a tip 63a that contacts the contact surface 64, a disk-shaped upper base 63b on which the tip 63a is formed, a shaft 63c that extends downward from the upper base 63b, The shaft portion 63c includes a lower base portion 63d, and a spring member 63e disposed between the upper base portion 63b and the lower base portion 63d. The distal end portion 63a is formed of an elastic member such as rubber, and is formed at the distal end portion of a protrusion extending upward from the upper base portion 63b. The lower base portion 63d is a donut-shaped member in which a hole through which the shaft portion 63c can be inserted is formed, and is fixed to the bottom plate 69. The spring member 63e is wound around the shaft portion 63c, and has one end in contact with the lower surface of the upper base portion 63b and the other end in contact with the upper surface of the lower base portion 63d. By pressing the upper base portion 63b upward by the biasing force of the spring member 63e, the tip end portion 63a formed on the upper base portion 63b can press the sub-carriage 26. In the present embodiment, three push-up probes 63 are provided at positions corresponding to the three reference pins 61. Corresponding to each push-up probe 63, a probe push-down mechanism (not shown) is provided that pushes the upper base 63b downward against the urging force of the spring member 63e. This probe push-down mechanism is a mechanism that presses and pushes down the upper base 63b when the sub-carriage 26 is not gripped, and releases the press of the upper base 63b when the sub-carriage 26 is gripped.

  The head positioning mechanism 71 includes an alignment adjustment mechanism 75 fixed to the lower portion of the upper support frame 70a, an adjustment stage 76 positioned at the lower portion of the alignment adjustment mechanism 75, and two heads fixed to the lower portion of the adjustment stage 76. A gripping drive unit 77, two alignment adjustment pins 65 extending downward from the two head gripping drive units 77, and two cameras 74 positioned above the adjustment stage 76 are configured. The alignment adjustment mechanism 75 is a mechanism for moving the adjustment stage 76 disposed in a movable manner in the X and Y directions within a horizontal plane (a plane parallel to the bottom plate 69). A direction adjustment lever is provided. By operating the X direction adjustment lever and the Y direction adjustment lever, the adjustment stage 76 can be moved in parallel with respect to the sub-carriage 26 positioned by the reference pin 61.

  The adjustment stage 76 is approximately half the length of the sub-carriage 26 in the direction in which the recording heads 18 are arranged with respect to the sub-carriage 26 and is perpendicular to the direction (along the nozzle row 56 of the recording head 18). The plate material is formed to have a length substantially the same as the length of the recording head 18 in the other direction. Further, head gripping drive portions 77 are fixed to both ends of the front end portion of the adjustment stage 76, respectively.

  The head gripping drive unit 77 is a member for controlling the gripping of the recording head 18 and the spacer 32 by the alignment adjustment pin 65. The head gripping drive unit 77 includes a pin fixing unit 77a to which the alignment adjustment pin 65 is fixed, and a drive mechanism unit 77b that controls the movement of the pin fixing unit 77a. The drive mechanism portion 77 b has an upper portion fixed to the lower surface of the adjustment stage 76. The pin fixing portion 77a is connected to the lower portion of the drive mechanism portion 77b in a state in which it can slide in the direction along the nozzle row 56 of the recording head 18. And this pin fixing | fixed part 77a slides in the direction (direction shown by the arrow in FIG. 17) along the nozzle row 56 by the drive of the drive mechanism part 77b.

  The alignment adjustment pin 65 is a rod-like member fixed to the lower surface of the pin fixing portion 77 a of the two head gripping drive portions 77 in a posture perpendicular to the bottom plate 69. The lower end portion of the alignment adjustment pin 65 is covered with an elastic member such as rubber. Then, each alignment adjustment pin 65 moves to the recording head 18 side disposed on the sub-carriage 26 and is fitted into the corresponding groove portion 66 of the spacer 32 from both sides so as to sandwich the recording head 18. The recording head 18 and the spacer 32 can be gripped in contact with the partitioning inner wall. Specifically, when the recording head 18 and the spacer 32 are gripped, the spacing between the alignment adjustment pins is set slightly wider than the spacing between the groove portions 66 of the spacers 32 on both sides of the recording head 18, and the head gripping drive unit 77 is driven to move one alignment adjustment pin 65 to the recording head 18 side, and the other alignment adjustment pin 65 is similarly moved to the recording head 18 side. As a result, each alignment adjustment pin 65 enters the groove 66 of the spacer 32 from the side to grip the recording head 18 and the spacer 32. Further, if the head gripping drive unit 77 is operated in the reverse direction to the above-described operation, each alignment adjustment pin 65 can be moved to the side opposite to the recording head 18, and thereby each alignment adjustment pin 65 is moved to the groove 66. And the gripping of the recording head 18 and the spacer 32 can be released.

  The camera 74 positioned above the adjustment stage 76 is fixed to the upper surface of the upper support frame 70a, and is fixed to the front end surface of the support member extending in front of the upper support frame 70a. The camera 74 captures a positioning mark formed on the nozzle formation surface 53 of the recording head 18 and shifts from the reference mark 81 displayed in a state of being superimposed on the nozzle formation surface 53 in an image captured by the camera 74. It is a device for watching. The marks formed on the nozzle formation surface 53 of this embodiment are substituted by the nozzles 51 positioned at both ends of one nozzle row 56 of the nozzle rows 56 formed in two rows. The reference mark 81 of the present embodiment is indicated by a cross (see FIG. 20), and the center of the cross is the reference position of the nozzle 51 that is a positioning mark. Further, the adjustment stage 76 is partially omitted from the front end surface so as not to interfere with the shooting of the camera 74.

  Next, a method of manufacturing the recording head unit 17 that positions and attaches the recording head 18 and the like to the sub-carriage 26 using the alignment device 58 described above will be described. The recording head unit 17 is manufactured by a sub-carriage positioning step for defining the position of the head mounting portion 59 of the sub-carriage 26 with respect to the alignment device 58 on the basis of the plurality of positioning reference portions 62 of the sub-carriage 26 (attachment in the present invention). Corresponding to a frame material positioning step), a head positioning step for positioning the recording head 18 and the like with respect to the sub-carriage 26 positioned with respect to the alignment device 58 by the sub-carriage positioning step, and positioning with respect to the sub-carriage 26 And a head fixing step for fixing the recording head 18 in a state where the recording head 18 is formed.

  More specifically, first, the sub-carriage 26 is moved from the front side to the bottom plate 69 so as to be positioned between the distal end portion 63a of the push-up probe 63 of the alignment device 58 and the reference pin 61 using a delivery device (not shown). Introduced in a parallel posture. At this time, the tip 63a of each push-up probe 63 is pushed downward by the probe push-down mechanism. When each positioning reference portion 62 of the sub-carriage 26 is held at a position opposed to the reference pin 61, the push-down state of the push-up probe 63 by each probe push-down mechanism is released, and each tip end portion 63a becomes each sub-carriage. 26 is abutted against the abutting surface 64 of the head 26 and biased upward (head positioning mechanism 71 side). As a result, the sub carriage 26 comes into contact with the positioning reference portion 62 and the reference pin 61 contacts the head positioning mechanism 71 in the height direction (perpendicular to the surface formed by the positioning reference portion 62 and each head mounting portion 59. Are positioned between the reference pin 61 and the tip 63a of the push-up probe 63 (sub-carriage positioning step). For this reason, even if the thickness of the sub-carriage 26 varies due to a manufacturing error or the like, the height position of the positioning reference portion 62 with respect to the alignment device 58 is the same, and this position defines the position of the head mounting portion 59. It becomes the reference position.

  Next, the recording head 18 with the spacers 32 attached to both ends is placed on the sub-carriage 26 that is positioned with respect to the alignment device 58 in the sub-carriage positioning step. The recording head 18 is created by a conventional method. Here, the recording head 18 is in a state in which a part (mainly the sub tank 37) of the recording head 18 is accommodated in the accommodating portion 35 of the sub carriage 26 with the nozzle forming surface 53 (the first surface 32a of the spacer 32) facing up. Then, the spacers 32 on both sides are respectively placed on the head mounting portion 59 so that they are placed on the sub-carriage 26 via the spacers 32. In the present embodiment, five recording heads 18 are placed on the sub-carriage 26 via the spacers 32. Next, the head positioning mechanism 71 is moved back and forth by moving the support frame 70, and the spacer 32 attached to the recording head 18 positioned at one end in the parallel direction among the five recording heads 18 arranged in parallel. The alignment adjustment pin 65 is opposed to the groove 66. Thereafter, by driving the head gripping drive unit 77, the alignment adjustment pins 65 are fitted into the respective groove portions 66, and the recording heads 18 are gripped by being urged inward from both sides by the respective alignment adjustment pins 65. Then, based on the image of the nozzle forming surface 53 of the recording head 18 taken by the camera 74, the bottom of the groove 66 (the flange 52a when the groove 66 is formed through the spacer 32) is aligned. The recording head 18 is positioned within the mounting surface of the sub-carriage 26 while being pressed toward the sub-carriage 26 by the adjustment pin 65 (head positioning step). More specifically, the adjustment stage 76 is moved in the X direction and the Y direction by operating the X direction adjustment lever and the Y direction adjustment lever of the alignment adjustment mechanism 75 based on the image taken by the camera 74. In conjunction with this, the alignment adjustment pins 65 on both sides also move, so that one of the groove portions 66 corresponding to the movement direction is pressed in the movement direction of the alignment adjustment pin 65, and the recording head 18 moves in that direction.

  For example, when the recording head 18 is deviated by −b in the X direction and −a in the Y direction from a predetermined position, as shown in FIG. 20, an image photographed by one camera 74 is the position of the nozzle 51 used as a positioning mark. The center is an image shifted from the center of the reference mark 81 by −b in the X direction and −a in the Y direction. In this case, the X direction adjustment lever of the alignment adjustment mechanism 75 is operated to move the recording head 18 by b in the X direction. Further, the Y-direction adjustment lever of the alignment adjustment mechanism 75 is operated to move the recording head 18 by a in the Y direction. Thereby, the center of the nozzle 51 used as a positioning mark and the center of the reference mark 81 can be overlapped, and the recording head 18 is positioned at a predetermined position. Note that the same applies to images taken by the other camera 74.

  Thus, by operating the alignment adjusting mechanism 75, one recording head 18 can be moved to a predetermined position for positioning. In addition, since the groove part 66 is formed in V shape and the bottom part of the groove part 66 is formed diagonally with respect to the X direction and the Y direction, the alignment adjustment pin 65 is placed in either the X direction or the Y direction. If moved, the bottom of the groove 66 can be surely pressed.

  As described above, the recording head 18 positioned with respect to the sub-carriage 26 while being held by the alignment adjustment pin 65 is inserted into a slight gap formed between the sub-carriage 26 and the recording head 18. The adhesive is introduced and temporarily fixed. Thereafter, the alignment adjustment pin 65 fitted in the groove portion 66 of the spacer 32 attached to the temporarily fixed recording head 18 is removed from the groove portion 66 by driving the head grip driving portion 77 again, and the spacers at both ends are removed. Move outside of 32. In this state, by moving the support frame 70 toward the adjacent recording head 18 side by the parallel pitch of the recording heads 18, the head positioning mechanism 71 is similarly moved and next to the temporarily fixed recording head 18. The alignment adjustment pin 65 is opposed to the groove 66 of the spacer 32 attached to the recording head 18 located at the position. Then, after the head positioning step as described above, the recording head 18 is temporarily fixed, and the alignment adjustment pin 65 is removed from the groove 66. Thus, by repeating the movement of the head positioning mechanism 71, the head positioning process, and temporary fixing, all the recording heads 18 can be temporarily fixed to the sub-carriage 26. When all the recording heads 18 are temporarily fixed, the alignment adjustment pin 65 is removed from the groove 66, and the tip 63a of each push-up probe 63 is pushed down by the probe push-down mechanism so that the print carriage 18 is temporarily fixed. Is removed from the alignment device 58. Then, the spacer 32 is firmly fixed to the sub-carriage 26 by fastening a screw to the spacer insertion hole 29 provided in the spacer 32 attached to each recording head 18 (head fixing step). In this way, the recording head unit 17 of this embodiment can be manufactured.

  Although the spacer 32 of this embodiment is separate from the recording head 18, it may be formed integrally with the head case 52 as a part of the recording head 18. Further, the recording head unit 17 has been described with a configuration in which only the plurality of recording heads 18 are attached to the sub-carriage 26, but a configuration in which a head protection member 83 is attached as shown in FIG. The head protection member 83 is attached to the outside of the recording head 18 located at the end in the parallel direction along the parallel direction of the plurality of recording heads 18 and is a member for protecting the side surface of the recording head 18. In addition, the lower surface of the head protection member 83 is an inclined surface that is inclined upward toward the side surface opposite to the recording head 18 side, and deflects the recording medium being sent downward to directly contact the recording head 18. I try not to. In order to attach such a head protection member 83 to the sub-carriage 26, it may be fixed to the sub-carriage 26 with screws or the like after the head fixing step.

  As described above, the spacers 32 that are fixed to the sub-carriage 26 are respectively provided at both ends of the recording head 18 in the direction along the nozzle row 56, and each spacer 32 has a first side opposite to the sub-carriage 26. Corresponding to the alignment adjustment pin 65 provided in the alignment device 58 on the surface 32a, a groove portion 66 into which the alignment adjustment pin 65 can be fitted has a second surface 32b on the subcarriage 26 side from the first surface 32a. Since the groove portions 66 are formed so as to gradually increase in width from the inside toward the side in the direction along the nozzle row 56, the alignment adjustment pins are provided in the groove portions 66 on both sides. 65, the recording head 18 can be gripped without rattling, and the alignment adjustment pin 65 is moved in this state. And in, so as to follow the recording head 18 can be positioned in the recording head 18. For this reason, there is no divergence between the movement amount of the alignment adjustment pin 65 and the movement amount of the recording head 18, and the recording head 18 can be accurately positioned. In addition, the alignment adjustment pin 65 is in point contact with the inner wall of the groove 66, and it is not necessary to press the spacer 32 from above, so that the spacer 32 and the sub-carriage 26 are not easily deformed. As a result, manufacturing variations of the recording head unit 17 can be suppressed. In addition, since the spacer 32 is detachably fixed to the recording head 18, the recording head 18 can be removed from the spacer 32 even when the spacer 32 is bonded to the sub-carriage 26. And repairs are easy. Furthermore, since the maximum width of the groove 66 is larger than the diameter of the alignment adjustment pin 65, the alignment adjustment pin 65 can be stably fitted into the groove 66, and the recording head 18 can be positioned more accurately. Can do.

  Incidentally, in the sub-carriage 26 of the above-described embodiment, the three positioning reference portions 62 are provided, but the present invention is not limited to this. For example, four positioning reference portions 62 may be provided on the sub-carriage 26. In short, it is only necessary that the position of the sub-carriage 26 can be defined by providing three or more positioning reference portions 62 on the sub-carriage 26 and bringing the reference pins 61 of the alignment device 58 into contact therewith. In the above-described embodiment, the three positioning reference portions 62 are provided on the two outer frame portions 26a among the four outer frame portions 26a of the sub-carriage 26. However, the present invention is not limited to this. For example, the three positioning reference portions 62 may be divided into three outer frame portions 26a. Alternatively, the plurality of positioning reference portions 62 may be divided into four outer frame portions 26a. In short, a plurality of positioning reference portions 62 may be provided on at least two outer frame portions 26a of the four outer frame portions 26a of the sub-carriage 26 so as to be spaced from each other. Furthermore, in the said embodiment, although the groove part 66 was formed in V shape, it is not restricted to this. For example, the groove portion may be formed in a U shape. In short, the maximum width of the groove may be formed to be larger than the diameter of the alignment adjustment pin.

  In the alignment device 58, the head positioning mechanism 71 is moved with respect to the sub-carriage 26 by moving the support frame 70, but the present invention is not limited thereto. For example, the sub carriage holding mechanism may be moved without moving the support frame. In this case as well, the head positioning mechanism 71 can be moved with respect to the sub-carriage 26, and the plurality of recording heads 18 can be positioned. Further, the alignment adjustment mechanism 75 is configured such that the alignment adjustment pin 78 can be moved in the X and Y directions within a horizontal plane (a plane parallel to the bottom plate 69), but is not limited thereto. For example, in addition to the movement in the X and Y directions in the horizontal plane, the movement in the θ direction (the rotation direction about the center of the recording head 18 in the horizontal plane) can also be configured. In the head fixing step, all the recording heads 18 are temporarily fixed to the sub-carriage 26, and then removed from the alignment device 58 to fix each recording head 18. However, the present invention is not limited to this. For example, the recording heads 18 may be fixed by fastening screws without removing the sub-carriage 26 from the alignment device 58. Furthermore, in each of the above-described embodiments, the configuration in which the ink is ejected while the recording head 18 is reciprocally moved with respect to the recording medium is exemplified, but the present invention is not limited thereto. For example, it is possible to employ a configuration in which ink is ejected while moving the recording medium with respect to the recording head 18 in a state where the position of the recording head 18 is fixed.

  In the above description, the ink jet printer 1 which is a kind of liquid ejecting apparatus has been described as an example. However, in the present invention, the liquid ejecting head is fixed in a state where an intermediary member is interposed with respect to the head fixing member. The present invention can also be applied to other liquid ejecting apparatuses that employ the configuration. For example, a display manufacturing apparatus that manufactures color filters such as liquid crystal displays, an electrode manufacturing apparatus that forms electrodes such as organic EL (Electro Luminescence) displays and FEDs (surface emitting displays), and chips that manufacture biochips (biochemical elements) The present invention can also be applied to a manufacturing apparatus and a micropipette that supplies an accurate amount of a very small amount of sample solution.

DESCRIPTION OF SYMBOLS 1 ... Printer, 17 ... Recording head unit, 18 ... Recording head, 26 ... Subcarriage, 32 ... Spacer, 58 ... Alignment device, 59 ... Head mounting part, 61 ... Reference | standard pin, 62 ... Positioning reference | standard part, 63 ... Push-up probe , 64 ... contact surface, 65 ... alignment adjustment pin, 66 ... groove, 71 ... head positioning mechanism, 72 ... sub-carriage gripping mechanism, 74 ... camera, X ... parallel direction

Claims (4)

A liquid ejecting head unit comprising: a liquid ejecting head that ejects liquid from the nozzles in a nozzle array in which a plurality of nozzles are arranged; and an attachment frame member that is attached in a state where the liquid ejecting head is positioned by positioning means. And
Fixing members that are fixed to the mounting frame member are provided at both ends of the liquid jet head in the direction along the nozzle row, respectively.
In each fixing member, on the first surface opposite to the mounting frame member, corresponding to the positioning pin provided in the positioning means, the positioning pin can be fitted from the side in the nozzle row direction. Are provided in a state of being depressed from the first surface toward the second surface on the mounting frame member side,
The liquid ejecting head unit according to claim 1, wherein the groove is formed in a state in which the width gradually increases from the inside toward the side in the direction along the nozzle row.   The liquid ejecting head unit according to claim 1, wherein the fixing member is detachably fixed to the liquid ejecting head.   The liquid ejecting head unit according to claim 1, wherein a maximum width of the groove is larger than a diameter of the positioning pin. A liquid ejecting head that ejects liquid from the nozzles in a nozzle array in which a plurality of nozzles are arranged; and an attachment frame member to which the liquid ejecting head is attached; and positioning means for positioning the liquid ejecting head with respect to the attachment frame member A method of manufacturing a liquid jet head unit that is positioned and attached using:
Fixing members that are fixed to the mounting frame member are provided at both ends of the liquid jet head in the direction along the nozzle row,
In each fixing member, on the first surface opposite to the mounting frame member, corresponding to the positioning pin provided in the positioning means, the positioning pin can be fitted from the side in the nozzle row direction. Are provided in a state of being depressed from the first surface toward the second surface on the mounting frame member side,
The groove is formed in a state in which the width gradually increases from the inside to the side in the direction along the nozzle row,
The positioning pins of the positioning means are fitted into the respective groove portions, and the liquid ejecting head is gripped by urging inward from both sides by the respective positioning pins, and the bottom portion of the groove portion is moved to the mounting frame material side by the positioning pins. A manufacturing method of a liquid ejecting head unit, wherein the liquid ejecting head is positioned in a mounting surface of the mounting frame member in a pressed state.

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