JP2023055618A - Liquid discharge device - Google Patents

Abstract

To make it possible to positionally adjust a carriage and a guide member.SOLUTION: A liquid discharge device 100 comprises: a carriage 1 having a liquid discharge head 6; one or more guide rods 4 which so holds the carriage 1 as to be movable in a main scanning direction; a pair of adjustment plates 3 which respectively both end sides in the main scanning direction of the guide rod 4; a plurality of eccentric cams 7, 8, 9 of which each contacts the adjustment plate 3; and a stage 51 which holds a cloth. The liquid discharge device moves the adjustment plate 3 in Y direction or Z direction perpendicular to the main scanning direction X by rotations of the eccentric cams 7, 8, 9, and adjusts a position of the carriage 1 or the guide rod 4.SELECTED DRAWING: Figure 2

Description

The present invention relates to a liquid ejection device.

2. Description of the Related Art Conventionally, there is a liquid ejection apparatus that ejects liquid onto a predetermined range of a liquid application target by reciprocating a carriage on which a liquid ejection head is mounted on a guide member in a main scanning direction.

For example, in Patent Document 1 (Japanese Patent Application Laid-Open No. 2009-78415), vibration caused by movement of the carriages is reduced by moving two carriages in opposite directions with pulleys and endless belts.

In such a liquid ejecting apparatus, a positional deviation such as inclination of the carriage with respect to the liquid ejecting apparatus degrades the inclination of the carriage relative to the liquid application target or the liquid ejecting apparatus main body, and deteriorates the parallelism between the guide members or between the carriages. become.

An object of the present invention is to enable position adjustment of a carriage and a guide member.

In order to solve the above problems, the present invention provides a carriage having a liquid ejection head, one or more guide members holding the carriage movably in the main scanning direction, and both ends of the guide member in the main scanning direction. A liquid ejection device comprising: a pair of holding members holding respective sides; a plurality of eccentric cams respectively abutting against the holding members; and a stage holding a liquid application target, wherein rotation of the eccentric cams causes The position of the carriage or the guide member is adjusted by moving the holding member in at least one of the transport direction of the liquid application target and the direction perpendicular to the liquid application target arrangement surface of the stage. .

According to the liquid ejection device of the present invention, it is possible to adjust the positions of the carriage and the guide member.

1 is a perspective view showing a schematic configuration of a liquid ejection device according to an embodiment of the invention; FIG. FIG. 4 is a diagram showing the configuration of a left first adjusting plate held by a side plate; It is a figure which shows the spring which pressurizes a 1st adjusting plate. It is a figure which shows the mode of a movement of a 1st adjusting plate. It is a figure which shows the mode of a movement of a 1st adjusting plate. FIG. 4 is a diagram showing the configuration of a right first adjustment plate held by a side plate; FIG. 10 is a diagram showing a state in which the first carriage is tilted in the X direction and the Y direction; FIG. 8 is a diagram showing positional deviation of an image formed on a cloth due to the inclination of FIG. 7; FIG. 10 is a diagram showing a state in which the first carriage is tilted in the X direction and the Z direction; FIG. 10 is a diagram showing a state in which the first carriage is tilted in the Y direction and the Z direction; FIG. 3 shows an eccentric cam with a scale;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments according to the present invention will be described with reference to the drawings. In each figure, the same or corresponding parts are denoted by the same reference numerals, and redundant description thereof will be appropriately simplified or omitted.

FIG. 1 shows a perspective view of a liquid ejection device according to one embodiment of the present invention. The X direction shown in FIG. 1 is the main scanning direction or the horizontal direction of the liquid ejection device. The Y direction is the conveying direction of the fabric (printing target or liquid application target), the moving direction of the stage, or the front-rear direction of the liquid ejection device. Note that the stage moves back and forth, and the cloth is conveyed back and forth. The Z direction is the vertical direction of the liquid ejection device, and is the direction perpendicular to the surface of the stage on which the liquid is to be applied. The X, Y and Z directions are orthogonal to each other.

As shown in FIG. 1, the liquid ejection device 100 includes a first carriage 1A and a second carriage 1B, a pair of first side plates 2A, a pair of second side plates 2B, and a pair of first adjustment plates as holding members. 3A, second adjustment plates 3B as a pair of holding members, first guide rods 4A as a pair of guide members, and second guide rods 4B as a pair of guide members. Hereinafter, the first carriage 1A and the second carriage 1B are referred to as the carriage 1, the first side plate 2A and the second side plate 2B as the side plate 2, the first adjustment plate 3A and the second adjustment plate 3B as the adjustment plate 3, the first guide rod 4A, The second guide rod 4B is also called a guide rod 4. As shown in FIG. Note that the illustration of an eccentric cam, which will be described later, is omitted in FIG.

Each side plate 2 is provided on both sides in the left-right direction of the liquid ejection device 100 and fixed to the body portion 101 of the liquid ejection device 100 . The side plate 2 holds the adjustment plate 3 movably in the Y and Z directions.

The guide rod 4 is held by the adjusting plate 3 at both ends thereof. Each adjustment plate 3 holds two guide rods 4 in the Y direction.

Carriage 1 is supported by guide rods 4 so as to be movable on guide rods 4 . A carriage 1 has a plurality of liquid ejection heads 6 . The nozzle surface of the liquid ejection head 6 is provided on the lower surface side.

A rail 5 is provided along the Y direction on the body portion 101 of the liquid ejection device 100 .

A stage 51 (sometimes called a platen) holds a fabric to be printed or applied with liquid. Specifically, the cloth is placed on the placement surface 51a of the stage 51, which is the placement surface to which the liquid is to be applied. This arrangement surface 51a is a surface perpendicular to the Z direction. However, it does not have to be strictly vertical.

The stage 51 moves on the rail 5 downstream in the transport direction. At this time, while the carriage 1 reciprocates on the guide rod 4 in the X direction, the liquid ejection head 6 of the carriage 1 ejects ink as liquid onto the cloth on the stage 51 . This forms an image on the fabric. Further, the stage 51 can be moved in the Z direction with respect to the base portion, and the height of the placement surface 51a can be adjusted.

Since the liquid ejecting apparatus 100 has a plurality of carriages 1, it is possible to eject inks of different colors onto the fabric and to increase the printing speed on the fabric to improve the productivity of the apparatus.

In such a liquid ejecting apparatus 100, positional deviation of the carriage 1 with respect to the stage 51 and the body portion 101 of the liquid ejecting apparatus 100 poses a problem. That is, the carriage 1 is tilted with respect to the stage 51 and the main body portion 101 of the liquid ejecting apparatus 100, or the guide rod 4 is tilted with respect to the main body portion 101 and the stage 51, and the movement direction of the carriage 1 is changed so that the cloth on the stage 51 is placed. It may not be parallel to the surface to be touched. Further, in a configuration having a plurality of carriages 1, there is a problem that the carriages 1 are not parallel to each other or the moving directions of the carriages 1 are not parallel.

Therefore, in this embodiment, an eccentric cam is provided for changing the position of the adjusting plate 3. As shown in FIG. The configuration of this eccentric cam will be described below. Since the configuration of the eccentric cam that abuts on the first adjusting plate 3A and the second adjusting plate 3B is the same, only the first adjusting plate 3A will be described below. Among the pair of first adjustment plates 3A, the first adjustment plate 3A arranged on the left side as viewed from the lower left side in FIG. The first adjusting plate 3A is referred to as a first adjusting plate 3A2.

As shown in FIG. 2, a first eccentric cam 7, a second eccentric cam 8, and a third eccentric cam 9 are provided on the first side plate 2A. The first eccentric cam 7 brings its cam surface into contact with the first adjustment plate 3A1 from one side in the Y direction. The cam surfaces of the second eccentric cam 8 and the third eccentric cam 9 are brought into contact with the first adjustment plate 3A1 from below. The second eccentric cam 8 and the third eccentric cam 9 are arranged on one side and the other side of the first adjusting plate 3A1 corresponding to the respective guide rods 4A.

As shown in FIG. 3, the first adjustment plate 3A1 is pressurized by a spring member 10 in a direction opposite to the contact direction of each eccentric cam. Each spring member 10 has one end fixed to the first side plate 2A and the other end fixed to the pressurized portion 31 of the first adjustment plate 3A1. The pressing force of the spring member 10 places the first adjustment plate 3A1 at a position where it contacts the eccentric cams 7, 8, and 9. As shown in FIG.

As shown in FIG. 2, the first eccentric cam 7, the second eccentric cam 8, and the third eccentric cam 9 rotate about their respective rotation centers 7a, 8a, and 9a with respect to the first side plate 2A. The rotation of the first eccentric cam 7 changes its contact position with respect to the first adjustment plate 3A1, thereby changing the position of the first adjustment plate 3A1 in the Y direction. Specifically, by rotating the first eccentric cam 7 clockwise, the first adjustment plate 3A1 is moved rightward in the drawing against the pressure of the spring member 10 . Further, by rotating the first eccentric cam 7 counterclockwise, the pressing force of the spring member 10 causes the first adjustment plate 3A1 to move leftward in the figure. Further, the second eccentric cam 8 and the third eccentric cam 9 change the position of the first adjustment plate 3A1 in the Z direction by rotating. Specifically, by rotating the second eccentric cam 8 and the third eccentric cam 9 clockwise, the first adjusting plate 3A1 is moved upward against the pressing force of the spring member 10 . Further, by rotating the second eccentric cam 8 and the third eccentric cam 9 counterclockwise, the pressing force of the spring member 10 causes the first adjusting plate 3A1 to move downward. However, the spring member 10 that pressurizes the pressurized portion 31 from above may not be provided, and the first adjustment plate 3A1 may be configured to move downward by its own weight. Further, by rotating either the second eccentric cam 8 or the third eccentric cam 9, either side of the first adjustment plate 3A1 in the Y direction can be moved up or down.

As an example, as shown in FIG. 4, by rotating the first eccentric cam 7, the second eccentric cam 8, and the third eccentric cam 9 counterclockwise, the first adjusting plate 3A1 is moved to the lower left in FIG. move. Further, as shown in FIG. 5, by rotating the first eccentric cam 7, the second eccentric cam 8, and the third eccentric cam 9 clockwise, the first adjusting plate 3A1 is moved to the upper right in FIG.

Also, as shown in FIG. 6, the first eccentric cam 7, the second eccentric cam, and the third eccentric cam 9 are in contact with the first adjustment plate 3A2 as well. The first adjustment plate 3A2 is the same as the first adjustment plate 3A1 except that these eccentric cams are reversed left and right.

Next, a method of adjusting the position of the guide rod 4 and the carriage 1 by changing the position of the first adjusting plate 3A by these eccentric cams will be described. In the following description, for convenience, the case where the first carriage 1A and the first guide rod 4A are displaced (tilted) with respect to the main body 101 and the stage 51 will be described, and the second carriage 1B and the second guide rod 4A will be described. A case where the guide rod 4B is not displaced will be described. However, it goes without saying that the positions of the second carriage 1B and the second guide rod 4B may be adjusted by changing the position of the second adjustment plate 3B. For the sake of convenience, the carriage 1 is illustrated as a rectangular parallelepiped in FIGS. 7, 9 and 10 below.

FIG. 7 is a top view of the carriage and guide rods of the liquid ejection device. The first carriage 1A indicated by the dotted line in FIG. 7 is in a non-tilted state.
As shown in FIG. 7, the first guide rod 4A is tilted in the Y direction, and the parallelism between the first guide rod 4A and the second guide rod 4B is deteriorated. The tilt of the first guide rod 4A tilts the first carriage 1A in the X and Y directions. In other words, the first carriage 1A is rotating along the XY plane. In addition, the perpendicularity of the first carriage 1A to the fabric conveying direction is deteriorated.

FIG. 8 is a diagram exaggerating the displacement of the image when the liquid is ejected onto the cloth 900 with the first guide rod 4A and the first carriage 1A misaligned as shown in FIG. be. In this case, as shown in FIG. 8, the first carriage 1A reciprocates in the main scanning direction while being inclined with respect to the fabric 900. In this case, as shown in FIG. Therefore, in the image formed on the fabric 900, the forward image A1 indicated by the solid line and the backward image A2 indicated by the dotted line are out of alignment, forming an abnormal image.

When the positional deviation shown in FIG. 7 occurs, the positional deviation of the first guide rod 4A and the first carriage 1A can be corrected by moving the first adjusting plate 3A1 downward in FIG. Specifically, the first adjustment plate 3A1 is moved downward in FIG. 7 by rotating the first eccentric cam 7 shown in FIG. 2 clockwise. Alternatively, the first adjustment plate 3A2 is moved upward in FIG. Specifically, the first eccentric cam 7 shown in FIG. 6 is rotated clockwise. As a result, the tilt of the first guide rod 4A with respect to the main body 101 and the stage 51 can be corrected, and the tilt of the first carriage 1A can be corrected. Also, parallelism between the first guide rod 4A and the second guide rod 4B can be increased.

FIG. 9 is a diagram of the carriage and the guide rod as seen from the front of the liquid ejection device. The first carriage 1A indicated by the dotted line in FIG. 9 is in a non-tilted state.
The first guide rod 4A shown in FIG. 9 is tilted in the Z direction, and the parallelism between the first guide rod 4A and the second guide rod 4B is deteriorated. The tilt of the first guide rod 4A tilts the first carriage 1A in the X and Z directions. In other words, the first carriage 1A is rotating along the XZ plane.

In this case, by moving the first adjustment plate 3A1 downward in FIG. 9, the positional deviation of the first guide rod 4A and the first carriage 1A can be corrected. Specifically, the first adjustment plate 3A1 is moved downward in FIG. 9 by rotating the second eccentric cam 8 and the third eccentric cam 9 shown in FIG. 2 counterclockwise. Alternatively, the first adjustment plate 3A2 is moved upward in FIG. 9 by rotating the second eccentric cam 8 and the third eccentric cam 9 shown in FIG. 2 clockwise. As a result, the tilt of the first guide rod 4A with respect to the main body 101 and the stage 51 can be corrected, and the tilt of the first carriage 1A can be corrected. Also, parallelism between the first guide rod 4A and the second guide rod 4B can be increased.

The example shown in FIG. 10 is a view of the first carriage 1A and the second carriage 1B as seen from the left side of the liquid ejecting apparatus. The first carriage 1A indicated by the dotted line in FIG. 10 is in a non-tilted state.
As shown in FIG. 10, one first guide rod 4A is inclined in the Z direction (upward direction in FIG. 10), and the parallelism between one first guide rod 4A and the other first guide rod 4A is deteriorated. are doing. As a result, the first carriage 1A is tilted in the Y and Z directions. In other words, the first carriage 1A is rotating along the YZ plane. If such a tilt occurs, a difference in color will occur between one side and the other side in the Y direction of the image formed on the fabric.

In this case, the positional deviation of the first carriage 1A can be corrected by moving one of the first guide rods 4A arranged on the left side of FIG. 10 downward. Specifically, by rotating the second eccentric cam 8 shown in FIG. 2 counterclockwise, the first adjustment plate 3A1 is rotated counterclockwise, and one of the first guide rods 4A is moved downward in FIG. move to Alternatively, by rotating the third eccentric cam 9 clockwise, the first adjustment plate 3A1 is rotated counterclockwise, and the other first guide rod 4A arranged on the right side in FIG. 10 is moved upward in FIG. move to As a result, the tilt of the first guide rod 4A with respect to the main body 101 and the stage 51 can be corrected, and the tilt of the first carriage 1A can be corrected. Moreover, parallelism between one first guide rod 4A and the other first guide rod 4A can be increased.

Thus, by providing the second eccentric cam 8 and the third eccentric cam 9 that abut on one side and the other side of the first adjusting plate 3A in the Y direction from the Z direction orthogonal to the Y direction, the first carriage can be 1A can be rotated along the YZ plane.

In the above description, the case of correcting the inclination of the first guide rod 4A and the first carriage 1A with respect to the stage 51 and the body portion 101 of the liquid ejecting apparatus 100 has been described. It may be aligned with the second guide rod 4B and the second carriage 1B. Further, even when the positional deviations of FIGS. 7, 9 and 10 are combined, the positional deviations can be corrected by combining the rotations of the respective eccentric cams.

As described above, according to this embodiment, by moving the adjusting plate, it is possible to correct the inclination of the guide rod or carriage on the liquid ejection device or the inclination of the cloth to which the liquid is to be applied. Alternatively, the parallelism between the guide rods or between the carriages can be increased. Therefore, the liquid ejecting device can accurately eject the liquid to a predetermined position on the cloth. In other words, the liquid ejection device can form an image on the cloth with high positional accuracy.

As described above, in this embodiment, the adjustment plate, which is a holding member, moves in at least one of the Y direction and the Z direction. The positions of the guide rods and the carriage can be adjusted by moving in at least one of the directions perpendicular to the arrangement surface. Specifically, it is possible to correct the inclination of the guide rod or carriage on the liquid ejection device, or the inclination of the cloth or stage to which the liquid is to be applied. Alternatively, the parallelism between the guide rods or between the carriages can be increased. Therefore, the liquid ejection device can eject the liquid to a predetermined position on the cloth with high accuracy, and can form an image on the cloth with high positional accuracy.

In the embodiment, the "movement in at least one of the transport direction of the liquid application target and the direction perpendicular to the surface of the stage on which the liquid application target is arranged" refers to the Y direction perpendicular to the X direction, which is the main scanning direction. Alternatively, it is movement in the Z direction. However, the direction is not strictly limited to the direction perpendicular to the main scanning direction, and there may be some error. Further, moving the holding member in at least one of the transport direction of the liquid application target and the direction perpendicular to the surface of the stage on which the liquid application target is arranged means strictly a direction parallel to the liquid application target transport direction. Alternatively, the direction does not have to be parallel to the direction perpendicular to the surface of the stage on which liquid is to be applied, and there may be some error. The direction of movement of the holding member includes movement in the Y direction only, movement in the Z direction only, and movement with vectors in both the Y and Z directions.

Alternatively, an adjustment image may be printed on a cloth by the liquid ejection device 100, and the positions of the guide rod 4 and the carriage 1 may be adjusted using this adjustment image. The adjusted image can be an image having lines parallel to at least one of the main scanning direction and the sub-scanning direction. In addition, images formed by each of the outward and return passes of the carriage 1 can be included. It may contain images from each carriage only. Specifically, it is possible to use adjusted images each having images using only the colors corresponding to the respective carriages, or adjusted images having images corresponding to the printing ranges of the respective carriages. However, it is also possible to visually move the adjusting plate to correct the inclination of the carriage and the guide rod.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and it goes without saying that various modifications can be made without departing from the gist of the present invention.

In the above description, the liquid ejecting apparatus 100 has the first to third eccentric cams 7 to 9 as a mechanism for changing the position of the adjustment plate 3, but it is not necessary to have all of them. . For example, the first eccentric cam 7 may be omitted when the adjustment plate does not need to move in the Y direction, such as when the positional accuracy of the carriage and guide rods in the Y direction is ensured. Also, one or both of the second eccentric cam 8 and the third eccentric cam 9 can be omitted.

In the above description, a guide rod is shown as a guide member for moving the carriage 1 in the main scanning direction, but the present invention is not limited to this. For example, a rail for moving the carriage 1 in the main scanning direction may be provided as a guide member. Further, the shape of the holding member is not limited to a plate shape.

Further, as shown in FIG. 11, the first eccentric cam 7 may be provided with a scale 7b along its rotational direction. This makes it easy to adjust the positions of the guide rods and the carriage by visually changing the position of the adjusting plate 3 . Although the first eccentric cam 7 is illustrated in FIG. 11, the second eccentric cam 8 and the third eccentric cam 9 may be provided with scales.

In the above description, the liquid ejection device having a plurality of carriages was shown, but the liquid ejection device may have only one carriage.

In the above embodiments, the cloth is exemplified as the object to which the liquid is applied, but the object is not limited to this, and any object to which the liquid can adhere can be used.

The "liquid ejection device" includes a device that includes a carriage having a liquid ejection head and drives the liquid ejection head to eject liquid. Liquid ejecting apparatuses include not only apparatuses capable of ejecting liquid onto an object to which liquid can adhere, but also apparatuses ejecting liquid into air or into liquid.

The "liquid ejecting apparatus" can include means for feeding, transporting, and ejecting an object to which liquid can adhere, as well as a pre-processing device, a post-processing device, and the like.

For example, as a “liquid ejection device”, an image forming device that ejects ink to form an image on paper, a powder that forms a layer to form a three-dimensional object (three-dimensional object) There is a three-dimensional modeling apparatus (three-dimensional modeling apparatus) that ejects a modeling liquid onto a body layer.

Further, the "liquid ejecting apparatus" is not limited to one that visualizes significant images such as characters and graphics by ejected liquid. For example, it includes those that form patterns that have no meaning per se, and those that form three-dimensional images.

The above-mentioned "substance to which a liquid can adhere" means a substance to which a liquid can adhere at least temporarily, such as a substance to which a liquid adheres and adheres, a substance which adheres and permeates, and the like. Specific examples include media such as recording media such as paper, recording paper, recording paper, film, and cloth, electronic components such as electronic substrates and piezoelectric elements, powder layers (powder layers), organ models, and test cells. Yes, and unless otherwise specified, includes anything that has liquid on it.

The material of the above-mentioned "thing to which a liquid can adhere" may be paper, thread, fiber, fabric, leather, metal, plastic, glass, wood, ceramics, etc., as long as the liquid can adhere even temporarily.

Aspects of the present invention are, for example, as follows.
<1>
a carriage having a liquid ejection head;
one or more guide members that hold the carriage movably in the main scanning direction;
a pair of holding members respectively holding both end sides of the guide member in the main scanning direction;
a plurality of eccentric cams each in contact with the holding member;
A stage for holding an object to which a liquid is to be applied, comprising:
By rotating the eccentric cam, the holding member is moved in at least one of the transport direction of the liquid application target and the direction perpendicular to the liquid application target arrangement surface of the stage, and the position of the carriage or the guide member is changed. The liquid ejecting apparatus is characterized by adjusting.
<2>
a plurality of said carriages;
The liquid ejection device according to <1>, comprising one or more of the guide members, a pair of the holding members, and one or more of the eccentric cams respectively corresponding to the plurality of carriages.
<3>
The liquid ejecting apparatus according to <1> or <2>, wherein the eccentric cam contacts the holding member from the front-rear direction of the liquid ejecting apparatus.
<4>
The liquid ejecting apparatus according to any one of <1> to <3>, wherein the eccentric cam contacts the holding member from the vertical direction of the liquid ejecting apparatus.
<5>
The liquid ejection device according to <4>, wherein the eccentric cam abuts from the up-down direction on one side and the other side of the holding member in the front-rear direction of the liquid ejection device.
<6>
The liquid ejection device according to any one of <1> to <5>, further comprising a spring member,
The spring member is a liquid ejection device that presses the holding member toward the eccentric cam.
<7>
The liquid ejecting device according to any one of <1> to <6>, wherein the eccentric cam has a scale along its rotation direction.
<8>
an adjustment image can be formed on the liquid application target by the liquid ejection head;
The liquid ejecting apparatus according to any one of <1> to <7>, wherein a position of the carriage is adjusted using the adjustment image formed on the liquid application target.

1A first carriage 1B second carriage 2A first side plate 2B second side plate 3A first adjustment plate (holding member)
3B Second adjustment plate (holding member)
4A first guide rod (guide member)
4B second guide rod (guide member)
6 liquid ejection head 7 first eccentric cam 7b scale 8 second eccentric cam 9 third eccentric cam 10 spring member 51 stage 51a liquid application target placement surface of stage 100 liquid ejection device 900 fabric (printing target or liquid application target)
X main scanning direction Y direction of cloth transport or stage movement direction Z direction perpendicular to the surface of the stage on which liquid is to be applied

JP 2009-78415 A

Claims (8)

a carriage having a liquid ejection head;
one or more guide members that hold the carriage movably in the main scanning direction;
a pair of holding members respectively holding both end sides of the guide member in the main scanning direction;
a plurality of eccentric cams each in contact with the holding member;
A stage for holding an object to which a liquid is to be applied, comprising:
By rotating the eccentric cam, the holding member is moved in at least one of the transport direction of the liquid application target and the direction perpendicular to the liquid application target arrangement surface of the stage, and the position of the carriage or the guide member is changed. A liquid ejection device characterized by adjusting. a plurality of said carriages;
2. The liquid ejection device according to claim 1, comprising one or more of said guide members, a pair of said holding members, and one or more of said eccentric cams respectively corresponding to said plurality of carriages. 2. The liquid ejection device according to claim 1, wherein the eccentric cam abuts on the holding member from the front-rear direction of the liquid ejection device. 2. The liquid ejection device according to claim 1, wherein the eccentric cam contacts the holding member from above and below the liquid ejection device. 5. The liquid ejection device according to claim 4, wherein the eccentric cam abuts from the up-down direction on one side and the other side of the holding member in the front-rear direction of the liquid ejection device. 2. The liquid ejection device according to claim 1, further comprising a spring member,
The liquid ejection device, wherein the spring member presses the holding member toward the eccentric cam. 2. A liquid ejecting apparatus according to claim 1, wherein said eccentric cam has a scale along its rotational direction. an adjustment image can be formed on the liquid application target by the liquid ejection head;
2. The liquid ejecting apparatus according to claim 1, wherein the adjustment image formed on the liquid application target is used to adjust the position of the carriage.

Images