JP2012176510A - Adjustment mechanism and liquid ejection apparatus using the adjustment mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adjustment mechanism capable of easily and highly accurately adjusting the position of a liquid ejection head, and to provide a liquid ejection apparatus including the adjustment mechanism.SOLUTION: The adjustment mechanism A includes a movement member 15 moving along guides 21a and 21b on a member to be fixed 14 and a rotation member 16a rotatably supported on the movement member 15 in an adjustment mechanism for adjusting and fixing the liquid ejection head 10a to the member to be fixed 14 in terms of positions. The liquid ejection head 10a is fixed to the rotation member 16a.

Description

  The present invention relates to an adjustment mechanism and a liquid discharge apparatus, and more particularly, to an adjustment mechanism for adjusting a mounting position of a head or the like that discharges liquid and a liquid discharge apparatus using the adjustment mechanism.

  An ink jet recording apparatus, which is an example of a liquid ejecting apparatus, includes an ink jet head (liquid ejecting head) that ejects ink (liquid) such as ultraviolet curable ink, aqueous pigment ink, solvent ink, and sublimation ink, and a medium ( The image forming apparatus includes a fixing unit such as an ultraviolet lamp, a heater, and a drying fan that irradiates the ink discharged onto the medium with ultraviolet rays. The inkjet head is mounted on a carriage that is scanned in the width direction of the medium, and recording is performed by fixing (curing or drying) ink droplets that are ejected from the nozzles of the inkjet head while scanning the carriage.

As the inkjet head mounted on the carriage described above, an inkjet head in which a plurality of inkjet heads are arranged in a staggered manner in a direction orthogonal to the scanning direction may be used in order to increase the print width.
In this case, when the ink jet head is assembled or replaced, it is necessary to adjust the inclination and overlap amount of the ink jet, and thus an adjustment mechanism that can finely adjust the attachment position of the ink jet head is required.

Here, as an example of a conventional technique related to an adjustment mechanism for adjusting the position of an inkjet head, a head position adjustment mechanism 101 described in Patent Document 1 is known (see FIG. 8).
The head position adjusting mechanism 101 includes a coil spring 123 that presses a side surface of a head case that constitutes the recording head 106, and a pressing mechanism 121 that includes an elastic member support portion 124 that stands from the bottom surface of the mounting base and supports the coil spring 123. A pressure receiving member 126 that is movably mounted within the adjustment range and receives a pressing force, and a pressure receiving mechanism that includes a pressure receiving member support portion 127 that is erected from the bottom surface of the mounting base and on which the pressure receiving member 126 is placed. 122, the pressing mechanism 121 is disposed on the side surface of one head case, and the pressure receiving mechanism 122 is disposed on the side surface of the other head case. The contact position between the coil spring 123 and the recording head 106, the pressure receiving member 126, and the recording The configuration is such that the contact position of the head 106 falls within the range of the side surface of the head case.

JP 2000-190465 A

  However, for example, in the adjustment mechanism for adjusting the head position disclosed in Patent Document 1, the first press receiving mechanism 122A shown in FIG. 8 is attached so as to be movable in two directions in the plane direction, and is an eccentric cam. The position is adjusted in two directions in the plane direction by the receiving member. That is, when the first pressure receiving mechanism 122A is configured to adjust the position in two directions in the plane direction, for example, when adjusting the position in the left-right direction first and then adjusting the position in the up-down direction, With the movement in the up and down direction that is performed from the beginning, there is a problem that the position in the left and right direction that is adjusted first is out of order. For this reason, it is difficult to adjust the mounting position of the head easily and with high accuracy.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide an adjustment mechanism capable of easily and highly accurately adjusting the position of a liquid discharge head, and a liquid discharge apparatus including the adjustment mechanism.

  As an embodiment, the above-described problem is solved by a solution as disclosed below.

  The disclosed adjustment mechanism is an adjustment mechanism for adjusting the position of the liquid ejection head to the fixed member and fixing the movable member, and a movable member that moves along the guide on the fixed member, and is rotatable on the movable member. The liquid discharge head is fixed to the rotating member. According to this, the moving member and the rotating member are provided, and the movement adjustment / rotation adjustment function of the liquid ejection head is separated, so that the rotation adjustment (tilt adjustment) state by the rotation is maintained. On the other hand, since the moving member can be moved to adjust the movement (slide adjustment), the position of the liquid ejection head can be adjusted easily and with high accuracy.

  In the present invention, one or a plurality of the guides are provided on the fixed member along the moving direction of the moving member, and the moving member slides on the guide and moves. And a biasing member that biases the moving member against the guide from a direction perpendicular to the moving direction of the moving member or a direction that makes a predetermined acute angle with the direction perpendicular to the moving direction. It is preferable to be provided on the member to be fixed. According to this, when the moving member is linearly moved on the fixed member, that is, when the slide adjustment is performed, the backlash does not occur in the direction orthogonal to the moving direction, so that the adjustment can be performed with high accuracy.

  In the present invention, the urging member includes a first urging member that urges against the rotating member and a second urging member that urges against the moving member. Is preferred. According to this, the biasing member that biases the rotating member and the biasing member that biases the moving member against the guide member can be combined with the first biasing member. Therefore, the number of urging members can be reduced, and the overall size of the apparatus can be reduced by saving space.

  In the present invention, the rotating member has a first abutting portion at a position for rotating the rotating member against the urging direction of the first urging member, and the first abutting portion. It is preferable that the 1st press member which adjusts the position in the rotation direction of the said rotation member by pressing is provided on the said movement member. According to this, when the first pressing member is operated to rotate the rotating member on the moving member, that is, when the tilt adjustment is performed, the adjustment can be performed with high accuracy without rattling.

  In the present invention, a biasing member that biases the moving member in a predetermined direction along the moving direction, and a second pressing member for moving the moving member against the biasing direction of the biasing member; Is provided on the fixed member, the moving member has a second abutting portion against which the second pressing member is abuttably pressable, and the guide passes through the second abutting portion. It is preferable that the second pressing member is disposed along the pressing direction of the second pressing member. According to this, when the moving member is linearly moved on the fixed member, that is, when the slide adjustment is performed, the moving member is not rattled and no rotational stress is applied to the moving member. Adjustments can be made.

  The disclosed liquid ejection apparatus is a liquid ejection apparatus that includes a liquid ejection head that ejects liquid from a nozzle, a fixed member that fixes the liquid ejection head, and the adjustment mechanism. The liquid ejection head includes: The fixed member is fixed to the fixed member so as to be position-adjustable by the adjusting mechanism provided on the fixed member. According to this, since the mounting position adjustment of the liquid discharge head can be performed easily and with high accuracy, a liquid discharge apparatus with high liquid discharge accuracy can be realized.

  According to the disclosed adjustment mechanism, it is possible to easily and accurately adjust the mounting position of a head or the like that ejects liquid.

It is the schematic which shows the example of the liquid discharge apparatus which concerns on embodiment of this invention. FIG. 2 is a partially enlarged view for explaining the inside of the liquid ejection apparatus of FIG. It is the schematic which shows the state by which the liquid discharge head was fixed to the to-be-fixed member using the adjustment mechanism which concerns on embodiment of this invention. It is the schematic which shows the example of the adjustment mechanism which concerns on embodiment of this invention. It is an exploded view for demonstrating the structure of the adjustment mechanism of FIG. It is explanatory drawing for demonstrating the structure of the press member of the adjustment mechanism of FIG. It is explanatory drawing for demonstrating the effect | action of the press member of the adjustment mechanism of FIG. It is the schematic which shows the example of the adjustment mechanism which concerns on the conventional embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Here, an example of an adjustment mechanism that adjusts the mounting position of the liquid ejection head in the liquid ejection apparatus will be described as an example of the adjustment mechanism according to the present embodiment. In addition, an example of an ink jet recording apparatus will be described as an example of a liquid ejection apparatus using this adjustment mechanism. Note that components having the same function are denoted by the same reference symbols throughout the drawings for describing the embodiments, and the repetitive description thereof may be omitted. In the following, the “main scanning direction” is the medium (media) transport direction (X-axis direction), and the “sub-scanning direction” is the direction in which the carriage reciprocates perpendicular to the main scanning direction (Y-axis direction). Shall point to.

  FIG. 1 is a perspective view (schematic diagram) showing an external appearance of the ink jet recording apparatus, and FIG. 2 is a partially enlarged view (perspective view) for explaining the inside thereof. As shown in FIGS. 1 and 2, the ink jet recording apparatus 1 uses, for example, a large and long roll sheet (polyester sheet or the like) as a medium. A sheet material fed from a feeding roll (not shown) wound on the feeding shaft 2 is conveyed in the main scanning direction through the recording unit 3 and the opposing platen 4 and is wound on the winding shaft 5 to be taken up. 6 is formed. A drying device (heater and drying fan) 7 is provided upstream of the take-up roll 6 in the conveying direction. Further, tension bars 8 and 9 are provided on the downstream side of the feeding roll (not shown) in the transport direction and on the upstream side of the take-up roll 6 in the transport direction, and are formed on the platen 4 facing the recording unit 3. The sheet material is conveyed without slack to the recording position.

In the recording unit 3, liquid discharge heads (inkjet heads 10 a and 10 b described later) are mounted on a carriage (not shown) capable of reciprocating scanning in the sub-scanning direction orthogonal to the sheet material conveyance direction. The inkjet heads 10a and 10b are fixed to the base plate 14 (see FIG. 3) and assembled to the carriage.
Further, the carriage reciprocates along a Y-axis guide rail 12 provided along a Y-axis direction support member (Y bar) 11 formed in the longitudinal direction of the recording unit 3.

  As shown in FIG. 3, the two inkjet heads 10 a and 10 b provided as the liquid discharge heads are assembled to the base plate (fixed member) 14 assembled to the carriage so that the position can be adjusted using the adjustment mechanism A. . In the present embodiment, in order to increase the print width of the inkjet heads 10a and 10b, the two inkjet heads 10a and 10b are staggered so as to overlap in the direction perpendicular to the scanning direction (arrow direction) of the carriage. The two inkjet heads 10a and 10b are provided with solvent inks of various colors such as M (magenta), Y (yellow), C (cyan), and K (black) from an ink cartridge 13 shown in FIG. Ink (liquid) such as sublimation ink is supplied, and ink droplets are ejected from a nozzle (not shown).

Here, an adjustment mechanism A for adjusting the position of the liquid discharge head (here, the ink jet heads 10a and 10b) and fixing to the fixed member (here, the base plate 14) will be described with reference to FIGS. FIG. 4 is a perspective view (schematic diagram) showing a configuration example of the adjustment mechanism A according to the present embodiment. FIG. 5 is an exploded view for explaining the configuration of the adjusting mechanism A according to the present embodiment.
The adjustment mechanism A is a movable member (here, the slide plate 15) that moves along the guides 21a and 21b (see FIG. 5) on the member to be fixed (here, the base plate 14), and rotates on the slide plate 15. A rotating member (here, the rotating plate 16a) supported so as to be capable of being provided, and the inkjet head 10a is fixed to the rotating plate 16a. Further, a rotation member (here, a rotation plate 16b) supported rotatably on the base plate 14 is provided, and the inkjet head 10b is fixed to the rotation plate 16b. That is, the slide plate 15, the rotating plate 16a, and the rotating plate 16b are arranged so that the two inkjet heads 10a and 10b are arranged in a staggered manner.

  More specifically, a slide plate 15 is provided on the base plate 14 so as to be linearly movable (that is, capable of slide adjustment) in a direction orthogonal to the scanning direction of the carriage (the direction of arrow S in FIG. 5). Further, on the slide plate 15, a rotating plate 16a capable of adjusting the inclination of the inkjet head 10a with respect to the scanning direction of the carriage is provided so as to be able to rotate (turn) around a fulcrum 19a (in the direction of arrow R1 in FIG. 5). ing. The base plate 14 is provided with a rotating plate 16b capable of adjusting the inclination of the ink jet head 10b with respect to the carriage scanning direction so that the rotating plate 16b can be rotated (rotated) about a fulcrum 19b (in the direction of arrow R2 in FIG. 5). .

Here, as shown in FIG. 5, two guides 21 a and 21 b are provided on the base plate 14 along the moving direction of the slide plate 15 (the direction of arrow S in FIG. 5). In the present embodiment, the guides 21a and 21b are formed in a protruding shape having an oval cross section. In addition, the number of installation is not limited to two, and may be one or three or more.
The slide plate 15 is provided with sliding portions 22a and 22b for sliding on the guides 21a and 21b at positions corresponding to the guides 21a and 21b. In the present embodiment, the sliding portions 22a and 22b have oval bottoms whose cross sections are longer in the longitudinal direction than the cross sections of the guides 21a and 21b so that the guides 21a and 21b can be fitted and slidable. It is formed in a groove shape.
According to the above configuration, the slide plate 15 can move linearly on the base plate 14.

At this time, a biasing member that biases the slide plate 15 against the guides 21a and 21b of the base plate 14 is provided. The urging direction by the urging member is a direction perpendicular to the moving direction of the slide plate 15 or a direction that forms a predetermined acute angle with the direction perpendicular to the moving direction. That is, a force component that urges the guides 21a and 21b in a direction orthogonal to the moving direction of the slide plate 15 may be generated.
In the present embodiment, as shown in FIG. 4, as the urging member, a leaf spring that abuts against and urges against the rotating plate 16a corresponding to the guides 21a and 21b, that is, corresponding to the position of the guide 21a. Corresponding to the position of the guide 21b, a (first urging member) 20a and a leaf spring (second urging member) 20b that abuts against and slides on the slide plate 15 are provided.

  According to the above configuration, when the slide plate 15 is linearly moved on the base plate 14, that is, when slide adjustment is performed, no rattling occurs in a direction orthogonal to the movement direction, and therefore it is possible to perform adjustment with high accuracy. .

  In addition, the following effects can be achieved by the leaf spring 20a. That is, as shown in FIG. 4, the rotating plate 16a is urged by the leaf spring 20a, and the first contact portion 16c of the rotating plate 16a is pressed against the cam surface of the eccentric cam (first pressing member) 17a. . The eccentric cam 17a is rotatably supported on the slide plate 15, and is rotated by a lever 18a. According to this, when the eccentric cam 17a is operated (the operation will be described later) and the rotation plate 16a is rotated on the slide plate 15, that is, when the tilt adjustment is performed, the adjustment can be performed with high accuracy without rattling. It becomes possible.

  In this way, the biasing member that biases the rotating plate 16a and the biasing member that biases the slide plate 15 against the guide member are combined with one biasing member (here, the leaf spring 20a). Can do. Therefore, the number of urging members can be reduced, and the overall size of the apparatus can be reduced by saving space.

  The slide plate 15 is urged by a coil spring (fourth urging member) 20d in a predetermined direction along the moving direction (a direction perpendicular to the scanning direction of the carriage), and the second contact portion 15a in the slide plate 15 is urged. Is pressed against the cam surface of the eccentric cam (second pressing member) 17c. The eccentric cam 17c is rotatably supported by the base plate 14, and is rotated by a lever 18c. According to this, when the eccentric cam 17c is operated (the operation will be described later), when the slide plate 15 is linearly moved on the base plate 14, that is, when the slide adjustment is performed, the adjustment is performed with high accuracy without rattling in the moving direction. It becomes possible.

  In particular, the guides 21a and 21b according to the present embodiment are arranged on a straight line passing through the second contact portion 15a and along the pressing direction of the eccentric cam 17c (the direction of arrow S in FIG. 5). It has a configuration. According to this, since the direction of the pressing stress applied to the second contact portion 15a coincides with the sliding surfaces of the guides 21a, 21b and the sliding portions 22a, 22b, the sliding plate 15 is not subjected to rotational stress. Therefore, the slide plate 15 can be moved smoothly.

  On the other hand, the rotating plate 16b is urged by a leaf spring (third urging member) 20c and pressed against the cam surface of the eccentric cam 17b. The eccentric cam 17b is rotatably supported by the base plate 14, and is rotated by a lever 18b. According to this, when the eccentric cam 17b is operated (the operation will be described later) and the rotation plate 16b is rotated on the base plate 14, that is, when the tilt adjustment is performed, the adjustment can be performed with high accuracy without rattling. It becomes.

Here, the eccentric cams 17a, 17b, and 17c (see FIG. 6B) and the levers 18a, 18b, and 18c (see FIG. 6A) having a common structure will be described.
As shown in FIG. 6C, the eccentric cams 17a, 17b, and 17c are configured such that the outer diameter center O1 and the inner diameter center O2 are shifted by a predetermined distance L1, and are rotated (rotated) by a rotating shaft that matches the inner diameter center. The levers 18a, 18b, 18c to be moved are connected. By rotating the levers 18a, 18b, 18c, the eccentric cam action is obtained by changing the outer diameter of the eccentric cams 17a, 17b, 17c on a fixed point (constant line).
At this time, the engagement protrusion C provided on the levers 18a, 18b, 18c is in any one of the engagement grooves B1, B2, B3, B4 (four places in this embodiment) provided on the eccentric cams 17a, 17b, 17c. When engaged, a mutual detent action occurs. Furthermore, the movement distance L2 shown in FIG. 7 can be adjusted by appropriately selecting the engagement holes B1, B2, B3, and B4.

The adjustment mechanism A described above is provided, and the inkjet heads 10a and 10b are fixed to the base plate 14 so that the position can be adjusted (see FIG. 3).
At this time, the inkjet head 10a is assembled on the rotating plate 16a, and is fitted into a through hole 23a (see FIG. 4) that penetrates the rotating plate 16a, the slide plate 15, and the base plate 14, and is a nozzle surface (not shown). Is supported so as to be exposed to the platen 4 side.
Further, the inkjet head 10b is assembled on the rotating plate 16b and is fitted into a through hole 23b (see FIG. 4) penetrating the rotating plate 16a, the slide plate 15 and the base plate 14, and the nozzle surface is exposed to the platen 4 side. To be supported.

Next, the operation of the adjustment mechanism A, that is, the adjustment method will be described.
In the inkjet heads 10a and 10b, the tilt of the head and the amount of overlap are adjusted when the product is shipped or the head is replaced. As an adjustment method at that time, specifically, the levers 18a and 18b are rotated, the rotating plates 16a and 16b are rotated about the fulcrums 19a and 19b by the rotating eccentric cams 17a and 17b, and the inkjet heads 10a and 10b are rotated. Align the tilt angle with respect to the scanning direction.

  Next, the lever 18c is rotated, and the slide plate 15 is slid in a direction orthogonal to the scanning direction by the rotating eccentric cam 17c to adjust the overlapping amount of the inkjet heads 10a and 10b.

  As described above, the slide plate 15 and the rotary plate 16a are provided, and the slide plate 15 is moved while maintaining the state in which the tilt is adjusted by the rotation of the rotary plate 16a by separating the functions of movement and rotation. You can adjust the slide movement. Therefore, even when the two inkjet heads 10a and 10b are staggered, the assembly position of the inkjet heads 10a and 10b can be easily adjusted with high accuracy by a simple operation.

  As described above, according to the disclosed adjustment mechanism, it is possible to easily and accurately adjust the mounting position of a head or the like that discharges liquid. In particular, according to the present embodiment, the following characteristic effects are exhibited.

  The adjustment mechanism A includes a slide plate 15 that moves on the base plate 14 along the guides 21a and 21b, and a rotary plate 16a that is rotatably supported on the slide plate 15. The inkjet head 10a is mounted on the rotary plate 16a. Is fixed. According to this, the movement adjustment and rotation adjustment functions of the inkjet head 10a can be separated, and the slide plate 15 is moved while maintaining the rotation adjustment (tilt adjustment) state by the rotation of the rotation plate 16a. It is possible to adjust the movement (slide adjustment).

  Two guides 21a and 21b are provided on the base plate 14 along the moving direction of the slide plate 15. The base plate 14 has sliding portions 22a and 22b for sliding and moving on the guides 21a and 21b. Corresponding to the guides 21a and 21b, biasing members (plate springs 20a and 20b) for biasing the slide plate 15 against the guides 21a and 21b from a direction orthogonal to the moving direction of the slide plate 15 are provided. It is provided on the base plate 14. According to this, when the slide plate 15 is linearly moved on the base plate 14, that is, when slide adjustment is performed, no backlash occurs in a direction orthogonal to the movement direction, and therefore it is possible to perform position adjustment with high accuracy. .

  Further, as the urging member, a first urging member (plate spring 20a) that abuts against the rotating plate 16a and a second urging member (a leaf spring 20b) that abuts against the slide plate 15 and urges. With. According to this, the first urging member (plate spring 20a) can be used as both the urging members of the rotating plate 16a and the slide plate 15, and the number of urging members can be reduced. Miniaturization of the entire apparatus can be realized.

  The rotating plate 16a has a first contact portion 16c at a position where the rotating plate 16a is rotated against the urging direction of the leaf spring 20a, and the rotation is performed by pressing the first contact portion 16c. An eccentric cam 17a for adjusting the position of the plate 16a in the rotational direction is provided on the slide plate 15. According to this, when the eccentric cam 17a is operated to rotate the rotating plate 16a on the slide plate 15, that is, when the tilt adjustment is performed, the position can be adjusted with high accuracy without rattling.

  Further, a coil spring 20d for urging the slide plate 15 in a predetermined direction along the moving direction, and an eccentric cam 17c for moving the slide plate 15 against the urging direction of the coil spring 20d are provided on the base plate 14. The slide plate 15 has a second contact portion 15a against which the eccentric cam 17c can be pressed, and the guides 21a and 21b are on a straight line passing through the second contact portion 15a, and the eccentric cam 17c. Are disposed along the pressing direction. According to this, when the slide plate 15 is linearly moved on the base plate 14, that is, when slide adjustment is performed, no rattling occurs in the moving direction, and no rotational stress is applied to the slide plate 15, so that the slide plate 15 is highly accurate and smooth. It is possible to adjust the position.

  In addition, the ink jet recording apparatus in which the ink jet heads 10a and 10b are fixed to the base plate 14 so that the position can be adjusted by the adjusting mechanism A can easily and accurately adjust the attachment positions of the ink jet heads 10a and 10b. Therefore, the ink discharge position can be adjusted with high accuracy, and the recording quality can be improved.

  Needless to say, the present invention is not limited to the embodiment described above, and various modifications can be made without departing from the present invention. In particular, as an example of an apparatus in which an adjustment mechanism is incorporated, an ink jet recording apparatus has been described as an example. However, the present invention is not limited to this and can be applied to other apparatuses.

A Adjustment mechanism 1 Inkjet recording apparatus 3 Recording unit 4 Platen 10a, 10b Inkjet head 11 Y-axis direction support member (Y bar)
12 Y-axis guide rail 13 Ink cartridge 14 Base plate 15 Slide plate 15a Second contact portion 16a, 16b Rotating plate 16c First contact portion 17a, 17b, 17c Eccentric cam 18a, 18b, 18c Lever 19a, 19b Support point 20a, 20b , 20c Biasing member (leaf spring)
20d Energizing member (coil spring)
21a, 21b Guide 22a, 22b Sliding part 23a, 23b Through hole

Claims (6)

In the adjustment mechanism for adjusting the position of the liquid ejection head to the fixed member and fixing it,
A moving member that moves along the guide on the fixed member; and a rotating member that is rotatably supported on the moving member;
An adjustment mechanism, wherein the liquid discharge head is fixed to the rotating member. One or more guides are provided on the fixed member along the moving direction of the moving member,
The moving member has a sliding portion for sliding and moving on the guide,
Corresponding to the guide, an urging member that urges the moving member against the guide from a direction orthogonal to the moving direction of the moving member or a direction that makes a predetermined acute angle with the direction orthogonal to the moving direction on the fixed member. The adjusting mechanism according to claim 1, wherein the adjusting mechanism is provided on the adjusting mechanism. The urging member includes a first urging member that urges against the rotating member and a second urging member that urges against the moving member. 2. The adjusting mechanism according to 2. The rotating member has a first contact portion at a position where the rotating member is rotated against the urging direction of the first urging member,
The adjusting mechanism according to claim 3, wherein a first pressing member that adjusts a position of the rotating member in a rotating direction by pressing the first abutting portion is provided on the moving member. . An urging member for urging the moving member in a predetermined direction along the moving direction, and a second pressing member for moving the moving member against the urging direction of the urging member include the fixed member. Provided on the
The moving member has a second abutting portion on which the second pressing member abuts so as to be capable of being pressed,
5. The guide according to claim 1, wherein the guide is disposed on a straight line passing through the second contact portion and along a pressing direction of the second pressing member. The adjustment mechanism described in 1. A liquid discharge apparatus comprising: a liquid discharge head that discharges liquid from a nozzle; a fixed member that fixes the liquid discharge head; and the adjustment mechanism according to any one of claims 1 to 5.
The liquid ejection apparatus, wherein the liquid ejection head is fixed to the fixed member so that the position of the liquid discharge head can be adjusted by the adjusting mechanism provided on the fixed member.

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