JP2022143547A - Liquid discharge device and platen member - Google Patents

Abstract

To provide a device that can suppress an object to be applied from shifting.SOLUTION: A liquid discharge device comprises a head 10 that discharges liquid to a cloth 400 and a platen member 40 that holds the cloth 400. The platen member 40, which is a flat plate-like member having a rectangular planar shape, has an upper surface 40a on which the cloth 400 is placed and a side surface 40b, and also has a plurality of needle-like members 141 that can contact with the cloth 400 in the vicinity of rectangular four sides. The needle-like members 141 are provided from the side surface 40b of the platen member 40 toward an oblique downward direction.SELECTED DRAWING: Figure 4

Description

The present invention relates to a liquid ejection device and a platen member.

2. Description of the Related Art As a printing apparatus, for example, there is an apparatus that prints on a fabric such as a T-shirt to which a liquid is to be applied.

Conventionally, as a holding member for holding a cloth, there has been known a holding member in which mounting protrusions having flat tip surfaces are arranged on the entire surface (Patent Document 1).

Japanese Patent No. 6656703

However, in the configuration disclosed in Patent Document 1, since the center surface of the mounting projection is a flat surface, there is a problem that the application target such as the placed cloth is shifted.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to suppress displacement of a liquid-applying target in a liquid-ejecting apparatus.

In order to solve the above problems, an apparatus for ejecting liquid according to claim 1 of the present invention includes:
liquid ejection means for ejecting liquid;
a platen member on which an application target to which the liquid is applied is placed,
The said platen member was taken as the structure which has the needle-shaped member which can contact with the said object of application.

ADVANTAGE OF THE INVENTION According to this invention, in the apparatus which ejects a liquid, the shift|offset|difference of the target to which a liquid is applied can be suppressed.

1 is a perspective explanatory view of an example of a printing apparatus according to a first embodiment of the invention; FIG. It is similarly a plane explanatory view. It is also a front explanatory view. It is explanatory drawing of the platen member which concerns on 1st Embodiment of this invention. It is explanatory drawing where it uses for operation|movement description of the same platen member. FIG. 10 is a perspective explanatory view of Comparative Example 1; It is also a sectional explanatory view. It is explanatory drawing of the platen member which concerns on 2nd Embodiment of this invention. It is explanatory drawing of the platen member which concerns on 3rd Embodiment of this invention. It is cross-sectional explanatory drawing of the platen member which concerns on 4th Embodiment of this invention. It is plane explanatory drawing with which it uses for description of the directionality of the needle-shaped member in the same platen member. It is plane explanatory drawing with which it uses for description of the directionality of the needle-shaped member in the platen member which concerns on 5th Embodiment of this invention. FIG. 11 is a plan explanatory view for explaining another example of different color coding of needle-like members in the platen member according to the sixth embodiment of the present invention; FIG. 21 is a perspective explanatory view for explaining a holding member for application according to a seventh embodiment of the present invention; It is front explanatory drawing of the platen member which concerns on 8th Embodiment of this invention. FIG. 20 is an explanatory diagram of an application target holding member according to a ninth embodiment of the present invention; FIG. 20 is an explanatory diagram of an application target holding member according to a tenth embodiment of the present invention;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. A printing apparatus according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is an explanatory perspective view of the printing apparatus, FIG. 2 is an explanatory plan view of the same, and FIG. 3 is an explanatory front view of the same.

The printing apparatus 1 includes a carriage 11 on which a head 10, which is liquid ejecting means for ejecting liquid, is mounted. The guide members 12 and 13 hold the carriage 11 so that it can reciprocate in the main scanning direction X. As shown in FIG. The carriage 11 is connected to a timing belt 17 looped around a drive pulley 15 and a driven pulley 16 rotated by a main scanning motor 14, and the main scanning motor 14 is driven to reciprocate the carriage 11 in the main scanning direction X. Let

The encoder sheet 18 is arranged along the main scanning direction X. As shown in FIG. The encoder sheet 18 is provided with periodic slits. The carriage 11 has a reading sensor that reads the slits of the encoder sheet 18, and the position of the carriage 11 in the main scanning direction X can be detected from the reading result of the reading sensor.

The controller board 50 controls ejection of ink, which is liquid, from the head 10 in synchronization with the ejection position from the carriage position obtained from the reading result of the reading sensor of the carriage 11 .

Four heads 10 are mounted on the carriage 11 . Each head 10 has two rows of nozzles in which nozzles for ejecting liquid are arranged. The carriage 11 also has a sub-tank that temporarily stores the liquid to be supplied to the head 10 . A liquid of a desired color is sent from the main tank 21 to the sub-tank by a liquid-sending pump through a supply tube.

The printing apparatus 1 includes a platen member 40 that is a holding member that holds a fabric 400 as an application target (printing target) to which liquid is applied. The platen member 40 is mounted on an elevating mechanism 41 so that the height in the vertical direction Z can be adjusted. A lifting mechanism 41 for the platen member 40 is mounted on a slider 42 . The slider 42 is movably mounted on a slide rail 43 extending in the sub-scanning direction Y orthogonal to the main scanning direction X. As shown in FIG.

The slider 42 is reciprocated in the sub-scanning direction Y by a sub-scanning drive mechanism via a timing belt 45 . As the slider 42 reciprocates in the sub-scanning direction Y, the platen member 40 also reciprocates in the sub-scanning direction Y. As shown in FIG.

A maintenance unit 60 that maintains and recovers the head 10 is arranged on one end side in the main scanning direction. The maintenance unit 60 includes a suction cap 61 for capping the nozzle surface of the head 10, a moisturizing cap 62 for capping the nozzle surface of the head 10 for moisturizing, and a wiping member 63 for wiping the nozzle surface of the head 10. . A suction pump is connected to the suction cap 61 .

An ejection receiver 66 is arranged on the other end side in the main scanning direction. The controller board 50 maintains and recovers the head 10 by ejecting liquid from the head 10 to the ejection receiver 66 during printing.

A light emitting portion 80A and a light receiving portion 80B of a height detecting means 80 for detecting the fabric 400 on the platen member 40 are arranged on one end side and the other end side in the main scanning direction. The height detection means 80 is attached to the frame 2 .

The printing apparatus 1 also includes a power button 70, an operation section 71, a power supply unit 72, and the like.

When printing on a fabric (printing object) such as a T-shirt in the printing apparatus 1 , the fabric 400 is set on the platen member 40 . After that, the platen member 40 is completely retracted rearward in the apparatus through the slider 42 by operating the operation portion 71 .

When the platen member 40 is retracted, the height detection means 80 detects whether or not the fabric 400 on the platen member 40 interferes with the head 10 . At this time, if the head 10 collides with the fabric 400, the drawing of the platen member 40 is stopped, or the platen member 40 is returned to the position where the fabric 400 is set.

When the pull-in of the platen member 40 is completed, a print data waiting state is entered. Here, the printing operation is started when the printing apparatus 1 receives print data from an external information processing apparatus. Alternatively, if print data has been accumulated in the controller board 50 in advance, the print operation is started by selecting the print data with the operation unit 71 .

When the printing operation is started, the platen member 40 is moved to the printing start position via the slider 42 . After that, the carriage 11 is moved and the liquid is discharged from the head 10 to print one line. When one line is printed, the platen member 40 is moved by one line via the slider 42 . A desired area of the fabric 400 is printed by repeating one scan of the carriage 11 and intermittent movement of the slider 42 . After printing is completed, the platen member 40 is returned to the front of the apparatus to complete printing.

Next, a platen member according to a first embodiment of the invention will be described with reference to FIGS. 4 and 5. FIG. 4A and 4B are explanatory views of the same platen member, FIG. 4A being a perspective view, FIG. FIG. 5 is an explanatory diagram for explaining the action of the platen member.

The platen member 40 is a flat member having a rectangular planar shape, and has an upper surface 40a and a side surface 40b on which the fabric 400 is placed. The platen member 40 has a plurality of needle-like members 141 in contact with the fabric 400 near four sides. The needle-like member 141 is provided to face obliquely downward in the vertical direction from the side surface 40b of the platen member 40, in other words, to protrude obliquely downward from the side surface 40b. The needle-like member 141 is preferably made of an elastic member.

The needle-like member 141 is a member capable of sticking into the cloth 400 . In other words, a sharp-edged member that can be inserted between fibers of the fabric 400 . It has hardness to the extent that it can hold the displacement of the fabric 400 . A platen is conventionally known in which a fabric is adhered and held by friction with a recording medium, but the present invention is more effective because it can be physically stuck.

With this configuration, the cloth 400 is placed on the upper surface 40a of the platen member 40 as shown in FIG. By hanging the cloth 400 a on the side surface 40 b of the platen member 40 , the cloth 400 comes into contact with the needle-shaped member 141 .

As a result, the needle-like member 141 bites into the surplus portion 400a of the cloth 400, making it difficult for the surplus portion 400a of the cloth 400 to be pulled toward the upper surface 40a of the platen member 40, thereby suppressing displacement and wrinkling. A platen is conventionally known in which a fabric is adhered and held by friction with a recording medium, but the present invention is more effective because it can be physically stuck.

In this embodiment, since the cloth 400 can be fixed and held by the needle-like member 141, a separate frame member is not required. However, if necessary, the fabric 400 may be further fixed using a frame member.

Here, Comparative Example 1 will be described with reference to FIGS. 6 and 7. FIG. FIG. 6 is a perspective explanatory view of Comparative Example 1, and FIG. 7 is a sectional explanatory view of the same.

Comparative Example 1 is an application target holding member 90 that includes a platen member 40 that does not have the needle-shaped member 141 of the present embodiment and a frame member 91 that is fitted to the outer peripheral portion of the platen member 40 .

In the application target holding member 90 of Comparative Example 1, as shown in FIG. 7A, the platen member 40 and the frame member 91 sandwich and hold the cloth 400 for printing.

At this time, the holding force of the frame member 91 alone is weak, and as time elapses, as shown in FIG.

On the other hand, in the present embodiment, the cloth 400 is held by the needle-like member 141, so the occurrence of shifts and wrinkles is suppressed, and the printing quality is improved.

Next, a platen member according to a second embodiment of the invention will be described with reference to FIG. 8A and 8B are explanatory views of the platen member according to the same embodiment, FIG. 8A being a perspective explanatory view, and FIG. 8B being a cross-sectional explanatory view taken along line B2-B2 of FIG. .

The platen member 40 has a plurality of needle-like members 141 in contact with the cloth 400 near four sides of the rectangular shape. The plurality of needle-like members 141 are provided on the upper surface 40a of the platen member 40 so as to face the outer edge direction obliquely upward in the vertical direction.

With this configuration, the cloth 400 is placed on the upper surface 40 a of the platen member 40 so that the cloth 400 is brought into contact with the needle-like member 141 .

As a result, the needle-like member 141 bites into the cloth 400, making it difficult for the cloth 400 to be pulled toward the central portion of the upper surface 40a of the platen member 40, thereby suppressing displacement and wrinkling.

Next, a platen member according to a third embodiment of the invention will be described with reference to FIG. 9A and 9B are explanatory views of the platen member according to the same embodiment, in which FIG. 9A is a perspective explanatory view, and FIG. 9B is a cross-sectional explanatory view taken along line B3-B3 of FIG. .

The platen member 40 has a plurality of needle-like members 141 in contact with the cloth 400 near four sides of the rectangular shape. A plurality of needle-like members 141 are provided facing obliquely upward in the vertical direction from the chamfered portion 40c between the upper surface 40a and the side surface 40b of the platen member 40. As shown in FIG.

With this configuration, the cloth 400 is placed on the upper surface 40 a of the platen member 40 so that the cloth 400 is brought into contact with the needle-like member 141 .

As a result, the needle-like member 141 bites into the cloth 400, making it difficult for the cloth 400 to be pulled toward the central portion of the upper surface 40a of the platen member 40, thereby suppressing displacement and wrinkling.

Next, a platen member according to a fourth embodiment of the invention will be described with reference to FIGS. 10 and 11. FIG. 10 is an explanatory cross-sectional view of the platen member according to the same embodiment in the X direction of the platen member of FIG. 11, and FIG. 11 is an explanatory plan view for explaining the directionality of the needle-like members in the platen member.

The platen member 40 has a plurality of needle-like members 141 that come into contact with the fabric 400 on the entire upper surface 40a, which is the side that holds the fabric.

Here, among the plurality of needle members 141, the needle member 141 arranged in the central portion in the X direction is oblique in the vertical direction so that the X1 side faces the X1 direction with the central portion in the X direction as a boundary. As for the upward direction, the X2 side is provided obliquely upward in the vertical direction so as to face the X2 direction.

In addition, the needle-like members 141 arranged on both sides in the Y direction are oriented obliquely upward in the vertical direction so that the Y1 side faces the Y1 direction, and the Y2 side faces the Y2 side. It is provided obliquely upward in the vertical direction so as to face the direction.

By providing the needle-like members 141 on the entire surface of the upper surface 40a of the platen member 40 in this way, the cloth 400 and the needle-like members 141 can be brought into contact with each other at more points, thereby further suppressing the occurrence of misalignment and wrinkles. can.

Next, a platen member according to a fifth embodiment of the invention will be described with reference to FIG. FIG. 12 is an explanatory plan view for explaining the directionality of the needle-like member in the platen member according to the same embodiment.

This embodiment also has a plurality of needle-like members 141 that come into contact with the cloth 400 over the entire surface of the platen member 40, as in the fourth embodiment.

Here, among the plurality of needle-like members 141, some of the needle-like members 141 arranged from the center to the corners of the platen member 40 face in the direction from the center to the four corners of the upper surface 40a of the platen member 40. It is provided obliquely upward in the vertical direction as shown in FIG. Others are the same as those of the fourth embodiment.

As a result, it is possible to suppress the occurrence of wrinkles in the vicinity of the corners of the platen member.

Next, another example of the platen member according to the sixth embodiment of the invention will be described with reference to FIG. FIG. 13 is an explanatory plan view for explaining another example of different color coding of the needle-like members in the platen member according to the same embodiment.

This embodiment also has a plurality of needle-like members 141 that come into contact with the cloth 400 on the entire surface of the upper surface 40a of the platen member 40, like the fourth embodiment or the fifth embodiment.

In the first example shown in FIG. 13(a), the platen member 40 is divided into two regions in the X direction, the region of the needle-like members 141A of the first color and the needle-like members of the second color different from the first color. It is partitioned into two areas that are color-coded into areas 141B and 141B.

As a result, the user can recognize the center line c in the Y direction that passes through the center of the platen member 40 in the X direction, and workability such as locating the printing position when setting the cloth 400 is improved.

Further, in the second example shown in FIG. 13A, the platen member 40 is divided in the X direction and the Y direction respectively, and the regions of the needle-like members 141A1 and 141A2 of the first color and the regions of the needle members 141A2 of the first color and the second color different from the first color. It is partitioned into four color-coded regions including needle-shaped members 141B1 and 141B2 of two colors.

As a result, the user can recognize the center o and the center lines c1 and c2 in the X and Y directions of the platen member 40, thereby improving workability such as locating the printing position when setting the cloth 400. .

Next, an application target holding member according to a seventh embodiment of the present invention will be described with reference to FIG. FIG. 14 is a perspective explanatory view for explaining the application target holding member according to the same embodiment.

The application target holding member 90 has a base member 201 and a platen member 40 . One end of a cover member 202 is rotatably attached to the base member 201 with a hinge 203 .

The platen member 40 has two application target placement sections 40A and 40B. The platen member 40 of this embodiment is a sock platen member used when printing on a pair of application objects such as socks.

Therefore, in the present embodiment, by providing the needle-like members 141 having directionality on the two application target placement portions 40A and 40B, the displacement and wrinkles of the application target are suppressed.

Next, a platen member according to an eighth embodiment of the invention will be described with reference to FIG. FIG. 15 is an explanatory front view of the platen member according to the same embodiment.

The platen member 40 has two slanted surfaces 140a that are slanted downward in the vertical direction from the central portion toward both end portions, for example, in a cross-sectional shape along the X direction. The platen member 40 has a needle member 141 on each inclined surface 140a.

Here, the needle-like members 141 provided on each inclined surface 140a are made longer in length toward the outer edge, so that the imaginary plane S connecting the tips of the needle-like members 141 is substantially flat as a whole. I have to.

In other words, when the needle-like member 141 is provided on the entire upper surface of the platen member 40, when the cloth 400 is placed on the tip of the needle-like member 141, the tension is not applied to the cloth 400 at the central portion of the platen member 40, so that the cloth 400 wrinkles. However, wrinkles are likely to occur at the outer edge of the platen member 40 due to strong tension such as pressing of the frame.

Therefore, by changing the length of the needle-like member 141 from the central portion of the platen member 40 toward the outer edge thereof, wrinkles are prevented from occurring on the entire surface of the platen member 40 .

In addition, since the platen member 40 has the inclined surface 140a that is inclined downward from the central portion, even if the discharged liquid comes off the fabric 400, it easily flows down.

Next, an application target holding member according to a ninth embodiment of the present invention will be described with reference to FIG. 16A and 16B are explanatory diagrams of a holding member to be applied according to the same embodiment, in which (a) is a perspective explanatory diagram, and (b) is a cross-sectional explanatory diagram along the line B4-B4 in (a) and an enlarged view of the A4 part. be.

The application target holding member 90 includes a platen member 40 that does not have a needle-like member, and a frame member 91 that is fitted around the outer peripheral edge of the platen member 40 . First needle-like members 141C are provided on the inner surfaces 91a and 91b of the frame member 91 facing the platen member 40, respectively.

The first needle-like member 141C on the inner surface 91a of the frame member 91 facing the upper surface 40a of the platen member 40 faces the outer edge direction of the upper surface 40a of the platen member 40 and is provided obliquely downward in the vertical direction. The first needle-like member 141C on the inner surface 91b of the frame member 91 facing the side surface 40b of the platen member 40 is provided facing obliquely downward in the vertical direction.

As a result, when placing the cloth 400 on the platen member 40, the cloth 400 does not come into contact with the first needle-like member 141C, so that the positioning work of the cloth 400 becomes easy. By fitting the frame member 91 after the positioning of the cloth 400, the first needle-like members 141C are brought into contact with the cloth 400, thereby preventing the cloth 400 from slipping and wrinkling.

Next, an application target holding member according to a tenth embodiment of the present invention will be described with reference to FIG. 17A and 17B are explanatory views of a holding member to be applied according to the same embodiment, in which FIG. 17A is a cross-sectional explanatory view before frame member fitting, and FIG. 17B is a cross-sectional explanatory view after frame member fitting.

In this embodiment, a second needle-like member 141D is provided at a position (region) facing the frame member 91 of the platen member 40. As shown in FIG. In this case, the first needle-like member 141C and the second needle-like member 141D are oriented parallel to each other, so that the cloth 400 can be sandwiched between the needle-like members and fixed more firmly.

When the needle-like member 141 is provided in the platen member 40 in each of the above-described embodiments, the needle-like member 141 can be automatically accommodated in the platen member 40, so that the work of removing the cloth 400 after printing can be performed. become easier.

Moreover, by attaching the needle-like member 141 to the platen member 40 in a replaceable manner, it can be replaced when it deteriorates over time.

Further, in the above embodiment, the case where the printing object is the cloth has been described, but the printing object is not limited to this. The present invention can be similarly applied to a case where a print target other than fabric is set on the holding member and printed.

1 Printing device (a device that ejects liquid)
10 head (liquid ejecting means)
REFERENCE SIGNS LIST 11 carriage 40 platen member 90 application target holding member 91 frame member 141 needle-like member 400 cloth (application target)

Claims (15)

liquid ejection means for ejecting liquid;
a platen member on which an application target to which the liquid is applied is placed,
A device for ejecting liquid, wherein the platen member has a needle-like member that can come into contact with the object to be applied. 2. The apparatus for ejecting liquid according to claim 1, wherein the needle member is provided so as to face obliquely downward from the side surface of the platen member. 2. The apparatus for ejecting liquid according to claim 1, wherein the needle-like member is provided obliquely upward from the upper surface of the platen member so as to face the outer edge direction. 2. The apparatus for ejecting liquid according to claim 1, wherein the platen member is provided so as to face obliquely upward from a chamfered portion between the upper surface and the side surface of the platen member. 5. The apparatus for ejecting liquid according to claim 1, wherein said platen member has a rectangular shape and has said needle-like members near four sides thereof. 2. The apparatus for ejecting liquid according to claim 1, wherein a plurality of directional needle-like members are arranged on the upper surface of the platen member. 6. Among the plurality of needle-like members, the needle-like members arranged from the central portion to the corner portions of the platen member have directionality from the central portion to the corner portions. A device for ejecting the liquid according to 1. 7. The apparatus for ejecting liquid according to claim 6, wherein the platen member is partitioned into a plurality of regions that are color-coded with different colors. 9. The apparatus for ejecting liquid according to claim 8, characterized in that the colored needle members are color-coded. 6. The device for ejecting liquid according to claim 5, wherein the lengths of the plurality of needle-like members change from the central portion toward the outer edge portion of the platen member. The platen member has, in its cross-sectional shape, two inclined surfaces extending downward from the central portion toward both sides,
The plurality of needle-shaped members are provided on the inclined surface so as to face obliquely upward toward the outer edge direction,
7. The device for ejecting liquid according to claim 6, wherein the imaginary plane connecting the tips of the needle-like members is substantially flat. liquid ejection means for ejecting liquid;
a platen member on which an application target to which the liquid is applied is placed;
a frame member sandwiching the application target between the outer edge of the platen member,
The frame member has a first needle-like member that contacts the application target,
A device for ejecting a liquid, characterized in that the liquid is ejected onto the object held by the platen member and the needle member. The platen member has a second needle-like member at a position facing the frame member,
13. The device for ejecting liquid according to claim 12, wherein the first needle-like member and the second needle-like member are provided parallel to each other. 14. The apparatus for ejecting liquid according to any one of claims 1 to 13, wherein said needle-like member is an elastic member. A platen member on which an object to be applied with the liquid ejected from the liquid ejecting means is placed,
A platen member comprising a needle-like member that contacts the application target.

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