JP7155965B2 - Adhesive supply device and inkjet image forming device - Google Patents

Description

The present invention relates to an adhesive supply device and an inkjet image forming apparatus.

2. Description of the Related Art In recent years, inkjet image forming apparatuses have become widely used as apparatuses for recording high-definition images on various recording media such as paper and fabric. In particular, when the recording medium is in the form of a long web, a belt conveying device having an endless conveying belt is used to convey the recording medium in close contact with the conveying belt. Reference 1).

In addition, in an inkjet image forming apparatus (also called a "textile printing apparatus") that uses a cloth as a recording medium, the cloth may be conveyed without wrinkles, and recording may be performed on the cloth maintained in a wrinkle-free state. is important. For this reason, the surface of the conveying belt that conveys the cloth is uniformly coated with an adhesive called "texture", and the cloth is adhered thereon, thereby improving the surface of the cloth during conveying and image formation. I try to keep it wrinkle-free.

Such an adhesive is a pasty viscous liquid, and when applied to the surface of the conveying belt to form a film, it functions as an adhesive that sticks and adheres the cloth to the surface. The cloth can be conveyed in a wrinkle-free state by stretching the cloth and adhering it to the surface of the conveying belt to which the adhesive is applied in the form of a film.

Regarding the application of the adhesive, in the technique described in Patent Document 1, in order to freely and easily adjust the thickness of the adhesive applied to the conveyor belt, an application blade is arranged in the width direction of the conveyor belt, and the application of the adhesive to the conveyor belt is performed. A configuration is adopted in which the height of the coating blade with respect to the target surface can be adjusted.

JP 2012-116092 A

However, in the configuration described in Patent Document 1, in the process of supplying the adhesive to the conveying belt, there is a lot of work to be done manually by workers, and the adhesive is accurately supplied with a constant thickness in the width direction of the conveying belt. There was a problem that it is difficult to

SUMMARY OF THE INVENTION It is an object of the present invention to provide an adhesive supply device and an inkjet image forming apparatus capable of supplying adhesive to a conveyor belt with a constant thickness.

The adhesive supply device according to the present invention includes:
a conveyor belt for conveying a recording medium on which an image is printed;
an adhesive injection unit that injects an adhesive toward the conveyor belt;
Prepare.

The inkjet image forming apparatus according to the present invention includes
the above adhesive supply device;
an inkjet head facing the conveyor belt;
Prepare.

ADVANTAGE OF THE INVENTION According to this invention, a conveying belt can be supplied with an adhesive by fixed thickness.

1A and 1B are side views illustrating a schematic configuration of a conventional inkjet image forming apparatus and a conventional example of a method of applying an adhesive. 1 is a side view illustrating a schematic configuration of an inkjet image forming apparatus according to an embodiment; FIG. 3A and 3B are a rear view and a side view showing a configuration example of the adhesive supply device according to this embodiment. 4A and 4B are a rear view and a side view showing a second configuration example of this embodiment. 5A and 5B are a rear view and a side view showing a third configuration example of this embodiment. FIG. 11 is a rear view showing a fourth configuration example of the present embodiment; 7A and 7B are a rear view and a bottom view showing a fifth configuration example of this embodiment. FIG. 10 is a rear view showing a configuration example of an adhesive supply device when an inkjet head is of a single pass type;

An inkjet image forming apparatus according to this embodiment will be described in detail with reference to the drawings. First, with reference to FIGS. 1A and 1B, a schematic configuration of a conventional inkjet image forming apparatus and a conventional example of a method of applying an adhesive will be described as a premise of the present embodiment.

FIG. 1A is a schematic configuration diagram showing an example of a conventional inkjet image forming apparatus 100 which is a premise of the present embodiment. This inkjet image forming apparatus 100 includes a belt conveying device 2, an image forming unit 3, and the like.

In the belt conveying device 2, an endless conveying belt 23 having a predetermined width is stretched over a plurality of (two in the illustrated example) rollers 21 and 22 arranged in parallel at predetermined intervals. The upper surface of the transport belt 23 stretched between the rollers 21 and 22 serves as a mounting surface on which the recording medium P is placed in close contact. One roller 21 is a driving roller driven by a sub-scanning motor (not shown), and the other roller 22 is a driven roller.

In the belt conveying device 2, the driving roller 21 rotates counterclockwise (see the arrow) in FIG. The belt 23 is rotated. By this operation, the recording medium P placed on the upper surface of the transport belt 23 is transported in the direction of arrow A in FIG. 1A, which is the sub-scanning direction.

As the recording medium P, for example, recording media commonly used for inkjet recording, such as paper, fabric, plastic film, and glass plate, can be used. The recording medium P may be in the form of a sheet that is cut into a predetermined size, or may be in the form of a long sheet that is continuously drawn out from an original wound roll.

In this embodiment, it is assumed that a long web-like fabric is used as the recording medium P. As shown in FIG. Therefore, it is necessary to apply an adhesive called adhesive (hereinafter simply referred to as "adhesive") to the surface of the conveying belt 23 in order to adhere the cloth to be conveyed to the upper surface of the conveying belt 23. An example of a conventional adhesive application method will be described later with reference to FIG. 1B.

When a long web-like fabric is used as the recording medium P, a pressure roller 24 is arranged at a position facing the driven roller 22 as shown in FIG. 1A. In addition, a feeding device dedicated to cloth and having a feed-out roller 25 is arranged on the upstream side of the conveying belt 23 in the conveying direction of the recording medium P. As shown in FIG. Since these configurations are publicly known, detailed description thereof will be omitted.

The image forming unit 3 includes a guide member 30 and a carriage 31 accommodating an inkjet head 35 and movable along the guide member 30 . The guide member 30 is an elongated member extending in the width direction of the conveying belt 23 (horizontal direction orthogonal to the moving direction, that is, the paper surface direction of FIG. 1A), and is arranged above the conveying belt 23 at a predetermined interval. is set. The carriage 31 is attached to two rails 301, 301 provided on opposite side surfaces of the guide member 30, and the length of the guide member 30 is controlled by transmission of driving force from a drive source such as a motor (not shown). move along the vertical direction.

An inkjet head 35 is accommodated (mounted) in the carriage 31 , and an ink ejection surface (nozzle surface) 31 a of the inkjet head 35 coincides with the bottom surface of the carriage 31 . Further, the lower surface of the carriage 31 is adjusted so that a predetermined gap is formed above the surface of the conveying belt 23 on which the recording medium P is placed. The image forming unit 3 ejects ink droplets from a large number of ink ejection holes (nozzles) provided on the lower surface of the carriage 31 to form a desired image on the recording medium P conveyed by the rotational movement of the conveying belt 23 . to form

In general, the carriage 31 and the inkjet head 35 shown in FIG. 1A are of a scanning type that ejects ink while moving in a direction perpendicular to the transport direction of the recording medium P, and the inkjet head 35 is intermittently transported. It is a shuttle-type head that reciprocates in the main scanning direction orthogonal to the conveying direction of the recording medium P.

In such a configuration, the driving of the sub-scanning motor and driving roller 21 is controlled so that the transport belt 23 performs an intermittent operation that repeats the standby state and the driving state during image formation. The transport pitch in such intermittent operation is determined by taking the head length of the inkjet head 35 (the length of the first to N-th ink ejection nozzles (not shown) arranged in the transport direction) as the maximum value. , can be set arbitrarily.

A belt cleaning device or the like for cleaning the conveying belt 23 is arranged on the lower surface side of the conveying belt 23. Since such a device or the like has a known structure, illustration and description thereof are omitted.

By the way, in such a conventional inkjet image forming apparatus 100, the operation of supplying or applying the above-described adhesive to the conveying belt 23 was mainly performed manually by an operator. An example of a conventional adhesive coating operation will be described below with reference to FIG. 1B.

In the conventional example shown in FIG. 1B, a coating blade 500 having a length equal to or greater than the width of the conveyor belt 23 is fixedly arranged in the width direction of the conveyor belt 23, and the adhesive AD is supplied from the container 501 to the conveyor belt 23. The adhesive AD is applied onto the conveying belt 23 by supplying (pouring) it toward the direction of the belt 23 . At this time, the transport belt 23 is driven so as to rotate in the clockwise direction opposite to the direction of rotation during printing (see arrow B in FIG. 1B, etc.).

In such a conventional example, an operator manually adjusts the height (gap) of the coating blade 500 with respect to the conveying belt 23, and the adhesive AD supplied from the container 501 is substantially uniform in the width direction of the conveying belt 23. It was necessary to manually move the container 501 in the width direction so that

However, in such a method, it is not easy to uniformly supply the adhesive AD in the width direction of the conveying belt 23, and there is a problem that it is necessary for a skilled worker to perform the work. In addition, depending on the manufacturing accuracy and durability of the coating blade 500, the tip side of the coating blade 500 may not be completely straight, and unevenness may occur. I had a problem.

In view of the problems described above, the inkjet image forming apparatus of the present embodiment is provided with an adhesive supply device having an adhesive injection section that injects the adhesive toward the conveying belt 23 . The adhesive supply device according to the present embodiment is configured to eject the adhesive AD in a direction intersecting the conveying direction of the recording medium P on the conveying belt 23 (arrow A direction in FIG. 1A). An adhesive supply device and an inkjet image forming apparatus according to the present embodiment will be described below with reference to FIG. 2 and subsequent drawings. For the sake of simplicity, the same parts as those of the conventional example shown in FIGS. 1A and 1B are given the same reference numerals, and the description thereof will be omitted as appropriate. For simplicity, illustration of the inkjet head 35 is omitted from FIG. 2 onward.

FIG. 2 is a side view showing a schematic configuration of an inkjet image forming apparatus 1 equipped with an adhesive supply device 4 according to this embodiment. 3A and 3B are a rear view and a side view showing a configuration example of the adhesive supply device 4. FIG.

As can be seen in comparison with the conventional configuration shown in FIG. 1B, in the inkjet image forming apparatus 1 of the present embodiment, the image forming unit 3 described above is provided with the adhesive supply device 4 .

Specifically, the adhesive supply device 4 includes an adhesive injection unit 40 having an adhesive injection nozzle 40 a and an adhesive storage tank 41 that stores the adhesive and supplies it to the adhesive injection unit 40 . Further, the adhesive storage tank 41 and the adhesive injection section 40 are connected via a pipe (not shown) serving as a flow path for the adhesive AD.

The adhesive injection part 40 is fixed to the side surface of the carriage 31 described above. In the example shown in FIG. 3, the adhesive storage tank 41 is fixed to the upper surfaces of the adhesive injection section 40 and the carriage 31 . Therefore, the adhesive supply device 4 (adhesive injection section 40 and adhesive storage tank 41) is configured to be movable along the guide member 30 together with the carriage 31 (see double arrow in FIG. 3A). In this embodiment, the driving source such as the motor in the carriage 31 constitutes the "moving section" of the present invention.

In the present embodiment, the adhesive injection part 40 has a configuration of a known spray injection type such as an air spray. The adhesive injection nozzle 40a of the adhesive injection unit 40 faces the surface (upper surface) of the conveying belt 23 and sprays the adhesive AD supplied from the adhesive storage tank 41 in the form of a mist. Thus, the sprayed adhesive AD adheres to the conveying belt 23 while spreading out radially in a plane circle as shown in FIGS. 3A and 3B.

An example of the operation of supplying the adhesive AD in this embodiment will be described below. In the present embodiment, the conveying belt 23 is intermittently driven at a constant feeding amount, and the adhesive AD is injected from the adhesive injection part 40 (adhesive injection nozzle 40a) in the standby state of the intermittent drive. set to In the present embodiment, the rotating direction of the conveying belt 23 during intermittent driving is driven in the direction opposite to the conveying direction of the recording medium P (see FIG. 2), as in the conventional example (see FIG. 1B). However, the rotation direction of the conveying belt 23 may be set to be the same as the conveying direction of the recording medium P (see FIG. 1A).

Here, the feed amount of the transport belt 23 is based on the ejection width (see the ejection width W in FIG. 3B) of the adhesive ejection nozzle 40a in the transport direction (moving direction of the transport belt 23) in which the recording medium P is transported. set. In one specific example, the feeding amount of the conveying belt 23 is such that the end portions in the conveying direction of the adhesive AD adhered to the conveying belt 23 by moving in the width direction a plurality of times are superimposed. It is set to an amount somewhat shorter than the width W. With such a setting, the adhesive AD can be uniformly applied onto the conveying belt 23 and supplied.

Further, the amount of movement of the adhesive injection unit 40 is set to a length corresponding to the width of the conveying belt 23 (see FIG. 3A).

Based on such configuration and settings, for example, when an adhesive application button (not shown) is turned on before the start of printing operation, the operation of supplying the adhesive AD to the conveying belt 23 by the adhesive injection section 40 is started. Specifically, at the start of the supply operation, the carriage 31 and the adhesive injection are arranged so that the adhesive injection nozzle 40a of the adhesive injection unit 40 is positioned on the end side of the conveying belt 23 (for example, the left side in FIG. 3A). The part 40 moves accordingly.

From this state, the carriage 31 and the adhesive injection unit 40 move at a constant speed toward the other end side (in this example, the right side in FIG. 3A) on the conveyor belt 23 in the standby state, and the adhesive injection nozzle 40a Adhesive AD is jetted. At the timing when the adhesive injection part 40 reaches the other end side of the conveying belt 23, the injection of the adhesive AD from the adhesive injection nozzle 40a is stopped. By this operation, the adhesive AD is applied on the conveying belt 23 with the spray width W. As shown in FIG.

Subsequently, the conveyor belt 23 is driven in the direction of arrow B in FIG. 2 at a set feed amount (a feed amount less than the width W in this example). During the driving of the transport belt 23, the adhesive injection nozzle 40a of the adhesive injection unit 40 stands by while positioned on the other end side of the transport belt 23 (in this example, the right side in FIG. 3A).

Then, when the conveying belt 23 is in the standby state again, the adhesive spraying section 40 moves toward one end of the conveying belt 23 (the left side in FIG. 3A) with the carriage 31 at a constant speed, while the adhesive jetting nozzle 40a moves toward the one end of the conveying belt 23 (the left side in FIG. 3A). Inject agent AD. Injection of the adhesive AD from the adhesive injection nozzle 40a is stopped at the timing when the adhesive injection part 40 reaches one end side of the conveying belt 23 . By this operation, the adhesive AD is applied onto the conveying belt 23 with a spray width W, and the adhesive AD is applied so as to overlap the adhesive AD applied in the previous operation in the movement direction of the conveying belt 23. be done.

Thereafter, the adhesive AD is applied to the entire surface of the conveying belt 23 by repeating the above-described operations.

Thus, according to the present embodiment, the adhesive AD can be applied to the entire surface of the conveying belt 23 without using an application blade. Therefore, according to the present embodiment, the adhesive AD can be applied to the conveying belt 23 with a constant thickness without being affected by the height adjustment of the blade or errors in manufacturing accuracy. can be accurately applied in the width direction of the conveyor belt 23 with a film thickness of, for example, 0.1 mm.

Further, according to the present embodiment, both the conveying belt 23 and the adhesive ejecting section 40 can be operated simply. By setting such as, the above effect can be obtained without requiring complicated control.

By the way, in the configuration of the present embodiment as described above, the adhesive AD ejected from the adhesive ejection nozzle 40a bounces on the conveying belt 23, and thus adheres to the ink ejection surface (nozzle surface) 31a of the inkjet head 35. Agent AD may adhere. Here, if the adhesive AD adheres to the nozzle surface or nozzles of the inkjet head 35, image defects may occur due to ejection bending, ink clogging, or the like during subsequent printing.

Various modifications for solving the above problems will be described below with reference to the drawings. 3A and 3B are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

4A and 4B show a second configuration example in this embodiment.

In the example described above with reference to FIGS. 3A and 3B, the adhesive injection nozzle 40a of the adhesive injection unit 40 is configured to inject the adhesive AD downward. On the other hand, the direction in which the adhesive AD is injected from the adhesive injection nozzle 40a is not limited to this. In the second configuration example, as shown in FIG. 4A, the adhesive injection nozzle 40a of the adhesive injection unit 40 ejects the adhesive AD in a direction away from the ink ejection surface (nozzle surface) 31a of the inkjet head 35. is set to This configuration prevents the adhesive AD ejected from the adhesive ejection nozzle 40a from rebounding on the conveying belt 23 and adhering to the ink ejection surface (nozzle surface) 31a.

Further, in the second configuration example, as shown in FIGS. 4A and 4B, a regulating plate 42 is provided as a partition for partitioning the space between the ink ejection surface (nozzle surface) 31a and the adhesive ejection nozzle 40a. ing. The regulation plate 42 is a plate-like member attached to the lower surface of the carriage 31 and extending along the moving direction of the conveyor belt 23. As shown in FIG. and longer than the ink ejection surface (nozzle surface) 31a. A predetermined gap is provided between the leading end of the regulation plate 42 and the conveyor belt 23 . According to this configuration, when the adhesive injection unit 40 moves to the right in FIG. Adhesion to the regulation plate 42 effectively prevents the adhesive AD from adhering to the ink ejection surface (nozzle surface) 31a.

In the example shown in FIG. 4A, the regulation plate 42 is provided at a position outside the ink ejection holes of the inkjet head 35 on the bottom surface of the carriage 31, but it is not limited to this. As another example, the regulating plate 42 may be provided at a position outside the adhesive injection nozzles 40 a on the lower surface of the adhesive injection section 40 , or at a boundary position between the lower surface of the carriage 31 and the lower surface of the adhesive injection section 40 . can.

5A and 5B show a third configuration example in this embodiment.

The third configuration example includes a shielding member 43 that surrounds the adhesive injection nozzle 40 a on the lower surface of the adhesive injection part 40 . Here, FIG. 5A is a partially cutaway view showing the cross-sectional shape of the shielding member 43, and FIG. 5B is a side view showing the external shape of the shielding member 43. As shown in FIG.

As can be seen from FIGS. 5A and 5B, the shielding member 43 has a shape that spreads out in a cross-sectional shape of a substantially "V" shape, and has a shape to which the adhesive AD injected from the adhesive injection nozzle 40a does not directly adhere. It's becoming Moreover, a predetermined gap is provided between the tip side of the shielding member 43 and the conveying belt 23 . According to this configuration, when the adhesive injection unit 40 moves rightward (or leftward) in FIG. Since most of the agent AD adheres to the inner surface of the shielding member 43, it is possible to effectively prevent the adhesive agent AD from adhering to the ink ejection surface (nozzle surface) 31a.

FIG. 6 shows a fourth configuration example in this embodiment.

In the fourth configuration example, a cover member 44 that covers the ink ejection surface (nozzle surface) 31 a is detachably provided on the lower surface of the carriage 31 . According to this configuration, the adhesive AD that is scattered when the adhesive AD is ejected from the adhesive ejection nozzle 40 a adheres to the cover member 44 , so that the ink ejection surface 31 a of the inkjet head 35 is directly exposed to the cover member 44 . protected. Therefore, it is possible to more effectively prevent the adhesive AD from adhering to the ink ejection surface (nozzle surface) 31a when the adhesive AD is ejected from the adhesive ejection nozzle 40a.

7A and 7B show a fifth configuration example in this embodiment.

The fifth configuration example includes, in addition to the fourth configuration example described with reference to FIG. 6, a suction unit 50 that sucks the adhesive AD sprayed and scattered from the adhesive spray nozzle 40a. Here, as shown in FIGS. 7A and 7B, the suction unit 50 is provided so as to surround the adhesive injection unit 40, and the tip (lower end side) is an annular suction nozzle 51 having a substantially rectangular plane. The end side is connected to a suction pump (not shown). The suction unit 50 is a hollow tubular body (so-called double-tube structure), and is connected to a driving source such as a solenoid (not shown). and the carriage 31 (see the double-headed arrow in FIG. 7A).

According to the fifth configuration example, when the adhesive AD is ejected from the adhesive ejection nozzle 40a, the adhesive AD scattered on the lower surface side of the carriage 31 adheres to the cover member 44 and adheres to the cover member 44. The remaining scattered adhesive AD can be sucked from the suction nozzle 51 of the suction section 50 located outside the adhesive injection nozzle 40a. Therefore, it is possible to more effectively prevent the adhesive AD from adhering to the ink ejection surface (nozzle surface) 31a when the adhesive AD is ejected from the adhesive ejection nozzle 40a. It is possible to effectively suppress the adhesion of the particles to the parts and cause failures and the like. In addition, in the fifth configuration example, the height of the suction nozzle 51 of the suction unit 50 can be adjusted. The height of 51 can be set to the optimum position.

The various configuration examples described above can be combined as appropriate.

In addition, in the embodiment and each configuration example described above, the configuration in which the adhesive ejection unit 40 moves integrally with the carriage 31 (that is, the inkjet head) has been described. As another configuration example, the configuration may be such that the adhesive ejector 40 moves separately from the carriage 31 (inkjet head 35). In this case, in order to allow the adhesive ejector 40 to move along the width direction of the conveyor belt 23, a member corresponding to the guide member 30 and a drive source for moving the adhesive ejector 40 are provided separately. However, there is an advantage in that the distance between the adhesive injection section 40 and the carriage 31 (inkjet head 35) can be increased. Moreover, according to this configuration, there is an advantage that it can be applied to a single-pass system in which the inkjet head ejects ink without moving on the conveying belt 23 .

If the inkjet head is a single-pass type head that ejects ink without moving on the conveying belt 23, a cleaning device 9 for cleaning the ink ejection surface 31a of the inkjet head is provided as shown in FIG. Some models have In the example shown in FIG. 8, the image forming unit 3, in which a plurality of inkjet heads are mounted (accommodated), is configured to be movable in the separation and contact directions with respect to the conveying belt 23 (see the vertical double arrow in FIG. 8). At the same time, the cleaning device 9 cleans the ink ejection surface 31 a on the bottom surface of the image forming unit 3 . Specifically, during head cleaning, the image forming unit 3 moves downward from the state shown in FIG. By moving along the guide rails 91 provided along the width direction of the belt 23 (see double arrows in the horizontal direction in FIG. 8), the belt 23 comes into contact with the ink ejection surface 31a of the image forming unit 3 and ejects the ink. Clean surface 31a. In such a configuration, for example, as shown in FIG. 8, the above-described adhesive injection section 40 may be fixed to the cleaning device 9 and set to perform the same operation as described above.

By the way, conventionally, when the adhesive AD is applied manually on the conveying belt 23, the solvent volatilizes from the adhesive AD applied on the conveying belt 23, so that the operator spends a long time applying the adhesive AD. There was concern about the health of the worker concerned if it continued. On the other hand, according to the present embodiment, most or all of the work of applying the adhesive AD can be automated, so that the work of workers during the application of the adhesive AD can be minimized and even unmanned. can be done. For this reason, according to the present embodiment, the degree of airtightness of the apparatus exterior (such as a housing) surrounding the inkjet image forming apparatus 1 is increased, and the solvent that volatilizes from the adhesive AD is unipolarly exhausted from the apparatus exterior. It may be configured to In one specific example, the top plate of the housing (not shown) of the inkjet image forming apparatus 1 is provided with an exhaust port for exhausting the component of the solvent that volatilizes from the adhesive AD.

In the above-described embodiment, the configuration in which one adhesive supply device 4 is moved in the width direction of the conveying belt 23 to inject (supply) the adhesive AD onto the conveying belt 23 has been described. As another configuration example, a plurality of adhesive supply devices 4 may be arranged in the width direction of the conveying belt 23, and the adhesive AD may be simultaneously ejected from each adhesive ejection nozzle 40a. In this case, the transport belt 23 may be driven continuously instead of being driven intermittently as described above.

Moreover, in the embodiment described above, the adhesive supply device 4 is configured to inject the adhesive AD by spraying. As another example, the adhesive supply device 4 may have a large number of nozzles having a structure equivalent to that of an inkjet head, and may be configured to eject (spray) the adhesive AD from each nozzle.

In addition, each of the above-described embodiments is merely an example of specific implementation of the present invention, and the technical scope of the present invention should not be construed to be limited by these. Thus, the invention may be embodied in various forms without departing from its spirit or essential characteristics.

REFERENCE SIGNS LIST 1 inkjet image forming apparatus 2 belt conveying device 3 image forming unit 4 adhesive supplying device 9 cleaning device 21 driving roller 22 driven roller 23 conveying belt 24 pressing roller 25 delivery roller 30 guide member 31 carriage (moving unit)
31a ink ejection surface 35 inkjet head 40 adhesive ejection section 40a adhesive ejection nozzle 41 adhesive storage tank 42 regulation plate (partition section)
43 Shielding member 44 Cover member 50 Suction unit 51 Suction nozzle AD Adhesive P Recording medium

Claims (13)

a conveyor belt for conveying a recording medium on which an image is printed;
an adhesive injection unit that injects an adhesive toward the conveyor belt;
a moving unit that moves the adhesive injection unit in a direction that intersects the conveying direction of the conveying belt;
An adhesive supply device comprising: a conveyor belt for conveying a recording medium on which an image is printed;
an adhesive injection unit that injects an adhesive toward the conveyor belt;
with
The conveyor belt is intermittently driven at a constant feeding amount,
The adhesive injection unit injects the adhesive when the intermittently driven conveyor belt is in a standby state.
Adhesive feeder. The feeding amount of the conveying belt is an amount based on the width of the injection in the conveying direction by the adhesive injection unit,
The adhesive supply device according to claim 2 . The feed amount of the conveying belt is an amount by which the end portion side in the conveying direction of the adhesive sprayed onto the conveying belt overlaps.
The adhesive supply device according to claim 3 . The adhesive injection unit injects the adhesive in the form of a mist,
The adhesive supply device according to any one of claims 1 to 4 . a conveyor belt for conveying a recording medium on which an image is printed;
an adhesive injection unit that injects an adhesive toward the conveyor belt;
a shielding member surrounding the adhesive injection part so as to prevent the sprayed adhesive from scattering;
An adhesive supply device comprising: An adhesive storage tank that stores the adhesive and supplies it to the adhesive injection unit,
The adhesive supply device according to any one of claims 1 to 6 . a conveyor belt for conveying a recording medium on which an image is printed;
an adhesive injection unit that injects an adhesive toward the conveyor belt;
an inkjet head facing the conveyor belt;
with
The adhesive injection unit ejects the adhesive in a direction away from the inkjet head.
Inkjet image forming device. a conveyor belt for conveying a recording medium on which an image is printed;
an adhesive injection unit that injects an adhesive toward the conveyor belt;
an inkjet head facing the conveyor belt;
a suction unit for sucking the adhesive sprayed and scattered from the adhesive spraying unit;
An inkjet image forming apparatus comprising: a conveyor belt for conveying a recording medium on which an image is printed;
an adhesive injection unit that injects an adhesive toward the conveyor belt;
an inkjet head facing the conveyor belt;
a cover member covering the ink ejection surface of the inkjet head;
An inkjet image forming apparatus comprising: a conveyor belt for conveying a recording medium on which an image is printed;
an adhesive injection unit that injects an adhesive toward the conveyor belt;
an inkjet head facing the conveyor belt;
with
The inkjet head is a head that ejects ink while moving in a direction perpendicular to the conveying direction of the recording medium,
The adhesive injection unit is fixed to a carriage housing the inkjet head,
A partition section is provided for partitioning a space between the ink ejection hole of the inkjet head and the adhesive ejection section,
Inkjet image forming device. a conveyor belt for conveying a recording medium on which an image is printed;
an adhesive injection unit that injects an adhesive toward the conveyor belt;
an inkjet head facing the conveyor belt;
with
The inkjet head is a head that ejects ink without moving on the conveyor belt,
The adhesive ejection unit is fixed to a cleaning device that cleans the ink ejection surface of the inkjet head, and moves separately from the inkjet head.
Inkjet image forming device. a conveyor belt for conveying a recording medium on which an image is printed;
an adhesive injection unit that injects an adhesive toward the conveyor belt;
an inkjet head facing the conveyor belt;
with
An exhaust port for exhausting a solvent that volatilizes from the adhesive is provided in an exterior part of the apparatus surrounding the inkjet image forming apparatus.
Inkjet image forming device.

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