JP2008114509A - Liquid delivering apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid delivering apparatus which prevents mist from sticking to a fan and can surely catch the mist sucked in a mist suction mechanism. <P>SOLUTION: The printer 1 is equipped with both an inkjet head 22 which delivers ink droplets to paper P on a platen 23, and the suction mechanism 30 which sucks the ink mist that floats without adhering to the paper P among the ink droplets delivered from the inkjet head 22, and which sticks the ink mist to a filter 32. The suction mechanism 30 has a suction hole 23a formed at the platen 23, a suction duct 31 communicating with the suction hole 23a, and the fan 33 set in the suction duct 31. The suction duct 31 is arranged at the upstream side in a suction direction from the fan 33 with a descending duct 31b in which the suction direction orients downward, an ascending duct 31d in which the suction direction orients upward, and a storing part 31c which stores the mist at bottoms of the descending duct 31b and the ascending duct 31d. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention is a liquid discharge device that discharges liquid droplets of a processing liquid from a liquid discharge head to an object to be processed and sucks floating mist that does not adhere to the object to be processed among the discharged liquid droplets by a mist suction mechanism. Relates to the device.

  As a conventional liquid ejection device, a liquid ejection head (inkjet head) that ejects ink droplets (ink droplets), which is a processing liquid, is moved relative to an object to be treated such as paper to be processed. 2. Related Art Inkjet recording apparatuses that perform printing processing on an object are known. In such an ink jet recording apparatus, in recent years, the particle size of ink droplets ejected from an ink jet head has been made finer with the improvement of printing quality such as photographic printing. For this reason, some of the ink droplets ejected from the inkjet head at the time of printing are not likely to adhere to the object to be processed and are likely to float in the recording apparatus as a minute ink mist. When such an ink mist is floating, the object to be processed such as paper is soiled, resulting in a decrease in print quality or the inside of the recording apparatus. Furthermore, the floating ink mist may adhere to a transport mechanism or the like in the recording apparatus and cause a malfunction. Therefore, mist is sucked by a mist suction mechanism including a suction duct and a fan (see, for example, Patent Documents 1 to 3).

Japanese Patent Application Laid-Open No. 11-13879 Japanese Patent No. 3535713 Japanese Patent No. 3642317

By the way, the mist sucked by the mist suction mechanism adheres to and is captured in the mist suction mechanism. When the amount of mist attached increases, the mist suction efficiency decreases, and print quality is deteriorated and other mechanisms are liable to be stained.
Therefore, in the ink jet recording apparatus described in Patent Document 1, the suction efficiency is improved by exchanging the suction duct that is contaminated by the sucked ink mist.

  However, in the conventional mist suction mechanism, the force for capturing the mist in the mist suction mechanism is insufficient, and the mist is likely to adhere to the fan or to be released to the outside of the machine.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a liquid ejection device that can prevent mist from adhering to a fan and reliably capture mist sucked into a mist suction mechanism.

  The liquid ejection apparatus according to the present invention that can solve the above-described problems includes a liquid ejection head that ejects liquid droplets of a processing liquid onto an object to be processed on a processing reference surface, and a liquid ejected from the liquid ejection head. A liquid ejection apparatus including a mist suction mechanism that sucks a mist that has not adhered to the object to be processed and is captured by a mist capturing member, wherein the mist suction mechanism is provided on the processing reference surface A suction duct that communicates with the suction hole, and a fan that is provided in the suction duct. The suction duct has a suction direction that is directed downward on the upstream side of the fan in the suction direction. A descending duct part, an ascending duct part whose suction direction is upward from a portion communicating with the vicinity of the lower end of the descending duct part, and a reservoir part for storing mist at the bottom part of the descending duct part and the ascending duct part Wherein the is provided.

  The liquid discharge apparatus configured as described above sucks the mist that has not adhered to the object to be processed and is mist suctioned when the liquid droplets of the processing liquid are discharged from the liquid discharge head to the object on the processing reference surface. Since it is sucked and adhered to the mist capturing member by the mechanism, the floating mist can be reduced. In addition, the mist sucked into the suction duct passes through the descending duct part and moves toward the ascending duct part, and due to gravity acting on the mist and inertia in the suction direction, the mist is attracted to the bottom part of the descending duct part and the ascending duct part. It falls to the storage part provided. As a result, the mist sucked into the suction duct can be dropped and stored in the storage portion at a large ratio, and the amount of mist attached to the fan provided on the downstream side of the storage portion can be reduced. In addition, because the mist suction mechanism improves the mist capture capability with the above-described configuration of the suction duct, the mist sucked into the mist suction mechanism can be reliably captured to prevent the release of mist outside the machine. Can do.

In the liquid ejection apparatus according to the present invention, it is preferable that the storage unit includes an absorbent material that absorbs mist.
According to this configuration, the mist that has fallen in the storage section can be stored in a state of being captured by the absorbent material without being stored in liquid form.

In the liquid ejection apparatus according to the present invention, it is preferable that the mist capturing member is a filter for adhering mist.
According to this configuration, mist can be attached and captured with a relatively simple configuration.

In the liquid ejection apparatus according to the present invention, it is preferable that the filter is provided on the downstream side of the storage portion in the suction duct and on the upstream side and the downstream side of the fan.
According to this configuration, since the filter is attached to the upstream side of the fan in the suction duct, it is possible to prevent the sucked mist from adhering to the fan. Accordingly, the performance of the fan can be maintained for a long time, and the life of the mist suction mechanism can be extended. Furthermore, since the filter is attached downstream from the fan, it prevents the mist that has passed through the upstream filter and fan from being released outside the device, and prevents the indoor environment where the device is installed from becoming dirty. The user can use the device with peace of mind.

In the liquid ejection apparatus according to the present invention, it is preferable that the filter is provided at a location close to the fan and further upstream at the upstream side of the fan.
According to this configuration, the filter in the vicinity of the fan functions as a filter for preventing mist from adhering to the fan, and the filter in the upstream area is the majority of the remaining mist that has not fallen into the reservoir. It can be made to function as a mist catch filter for catching. Since the mist capture and fan protection are performed by separate filters, the mist capture function and the mist adhesion prevention function to the fan can be effectively demonstrated by setting the performance of each filter according to each function. it can.

In the liquid ejection device according to the present invention, it is preferable that the upstream filter has a lower density among the two filters provided on the upstream side of the fan.
The filter at a location relatively far from the fan on the upstream side of the fan should have a relatively low density so as to capture the mist while maintaining the suction force of the fan. On the other hand, the filter close to the fan on the upstream side of the fan is required to protect the fan by capturing the mist that has not been captured by the filter at the remote location. Is good. Also, the filter close to the fan is unlikely to reduce the fan's suction force even if the density is increased.

Hereinafter, an example of an embodiment of a liquid ejection apparatus according to the present invention will be described with reference to the drawings.
In the present embodiment, an ink jet printer (ink jet recording apparatus) will be described as an example of the liquid ejecting apparatus.

  1 is an external perspective view of the printer of this embodiment, FIG. 2 is a schematic side sectional view showing the internal configuration of the printer shown in FIG. 1, and FIG. 3 is a schematic plan sectional view showing the internal configuration of the printer shown in FIG. 4 is a schematic sectional side view of the printer showing a state where paper can be fed from the main cassette, FIG. 5 is a schematic plan sectional view of the printer showing a state where paper can be fed from the main cassette, and FIG. 6 is shown in FIG. FIG. 7 is a schematic view showing the internal structure of the mist suction mechanism, and FIG. 8 is a perspective view of the filter.

  The printer 1 of the present embodiment is, for example, a front paper feed / rear paper discharge type ink jet printer. As shown in FIG. 1, a sub-cassette is placed at the center of the front surface (left end surface in FIG. 1) of the device case 4. A loading port 5 is formed. As shown in FIG. 2, the subcassette loading port 5 is detachably loaded with a subcassette 6 in which a sheet P, which is a large sheet-like object to be processed, is accommodated in an accommodation space S. The sub-cassette 6 is loaded in the inside of the device case 4 in the latter half portion and protrudes from the device case 4 in the first half portion.

  As shown in FIG. 1, a window portion 8 having an open / close door 7 that can be opened and closed outward is provided on the side surface (front side surface in FIG. 1) of the device case 4. In this state, the main cassette 42 can be taken in and out. As shown in FIG. 2, the main cassette 42 accommodates paper P, which is a small object to be processed, in a stacked state. Further, a discharge tray 9 for receiving the printed paper P is provided on the rear surface (right end surface in FIG. 1) of the device case 4.

  As shown in FIGS. 2 and 3, the apparatus case 4 is provided with a cassette installation unit 40 at the front, and a paper supply unit 10 downstream of the cassette installation unit 40 (that is, at the rear). Yes. A print processing unit 20 is provided on the downstream side of the paper supply unit 10, and a paper discharge unit 50 is further provided. A suction mechanism (mist suction mechanism) 30 is provided below and downstream of the print processing unit 20.

  In the cassette installation section 40, an opening / closing cover 5a that is pivotable inward is provided at the sub-cassette loading port 5. The opening / closing cover 5a is inserted into the sub-cassette loading port 5 to insert the sub-cassette 6 into the sub-cassette. 6, pivots inward to open the subcassette loading port 5, and pulls out the subcassette 6 from the subcassette loading port 5, thereby rotating to the subcassette loading port 5 side to rotate the subcassette loading port 5. Close.

The subcassette loading port 5 is provided with an open / close cover detection sensor 5b that is turned ON / OFF by opening / closing the open / close cover 5a.
In addition, a sub-cassette detection sensor 5c that is turned ON / OFF by attaching / detaching the sub-cassette 6 to / from the printer 1 is provided at a position on the front side in the loading direction in the printer 1 in which the sub-cassette 6 is loaded.

Further, a main cassette installation section 41 is provided in the apparatus case 4, and the main cassette 42 is detachably accommodated in the main cassette installation section 41.
The main cassette 42 has an accommodation space S in which small-sized paper P is stacked and accommodated therein, and a paper elevating mechanism 43 is provided in the accommodation space S. The uppermost portion of the small-sized paper P accommodated in the accommodation space S in a stacked state by the mechanism 43 is set to a predetermined height position.

The main cassette installation unit 41 includes an elevating plate 44 on which the main cassette 42 is placed. The elevating plate 44 is moved up and down by an elevating mechanism 44a.
Further, the elevating plate 44 is provided with a main cassette detection sensor 46 that is turned on and off by a pin 45 that protrudes and retracts when the main cassette 42 is attached to and detached from the main cassette installation portion 41.
In the main cassette installation section 41, the main cassette 42 on the lifting plate 44 is moved up by the lifting mechanism 44a with the sub-cassette 6 removed, as shown in FIGS. It is arranged at the paper feed position, and in this state, the paper P can be fed out by the pickup roller 13.

On the contrary, when the elevating plate 44 is lowered by the elevating mechanism 44a, the main cassette 42 is disposed at the standby position deviated from the paper feeding position. In this state, the main cassette 42 is disposed from the window 8 of the apparatus case 4. The main cassette 42 can be taken out. Further, the sub-cassette 6 can be loaded from the sub-cassette loading port 5 in a state where the main cassette 42 is disposed at the standby position.
The main cassette installation unit 41 includes a paper feed position detection sensor 47 that detects that the main cassette 42 is disposed at the paper feed position and a standby position detection sensor that detects that the main cassette 42 is disposed at the standby position. 48 is provided.

  The paper feeding unit 10 is provided with a pickup roller 13 supported at the front end of a frame 12 that is swingably supported in the apparatus case 4, and this pickup roller 13 is in contact with the paper P disposed below. As a result, the uppermost one of the sheets P is fed back one by one (to the right in FIGS. 2 and 3) and fed between the sheet feed roller 14 and the retard roller 15 provided on the rear side. The paper feed roller 14 and the retard roller 15 feed the fed paper P backward while sandwiching the fed paper P. The paper feed roller 14 and the retard roller 15 feed the paper P to the print processing unit 20 behind the paper feed roller 14 and the retard roller 15. Transport rollers 16 and 17 are provided.

  The print processing unit 20 includes an inkjet head 22 that prints an image by ejecting ink droplets (ink droplets) as a processing liquid while moving relative to the supplied paper P in the width direction of the paper P. The guide shafts 21 and 21 are provided so as to be movable perpendicular to the sheet feeding direction. A platen 23 is provided below the inkjet head 22 as a processing reference surface that supports the paper P, which is an object to be processed, from below.

  As shown in FIG. 2, in the paper discharge unit 50, the paper P on which ink droplets are ejected by the ink jet head 22 is sandwiched downstream of the ink jet head 22 and discharged onto the paper discharge tray 9. A pair of upper and lower paper discharge rollers 51 and 52 are provided.

  As shown in FIGS. 6 and 7, a suction mechanism 30 that sucks the floating ink mist without adhering to the paper P is provided on the downstream side from the lower side of the platen 23. The suction mechanism 30 includes a suction hole 23 a provided in the platen 23, a suction duct 31 communicating with the suction hole 23 a, and a fan 33 provided in the suction duct 31.

  As shown in FIG. 7, the suction duct 31 is provided on the lower side of the platen 23 and communicates with the suction hole 23 a to cover the lower surface of the platen 23, and communicates with the receiving portion 31 a and extends to the side once. A downward duct portion 31b extending downward, a rising duct portion 31d communicating with the side surface near the lower end of the downward duct portion 31b, extending upward, and extending downward from the upper end of the upward duct portion 31d. And a bent tubular structure including an exhaust duct portion 31e. The receiving portion 31 a, the descending duct portion 31 b, and the ascending duct portion 31 d are provided over substantially the entire width direction of the platen 23.

  The receiving portion 31a has a structure for sucking floating ink mist through the suction hole 23a and storing ink droplets I ejected (discarded) by the inkjet head 22 during borderless printing. The bottom of the receiving portion 31a can store the discarded ink droplets I, and includes an absorbing material 37 for absorbing and capturing the dropped ink droplets I. The absorbent 37 is made of an absorbent containing felt or pulp, and is excellent in liquid absorbency.

  The descending duct portion 31b extending from the side surface of the receiving portion 31a has a structure extending downward so that the suction direction is directed vertically downward. The lower duct side surface in the vicinity of the lower end of the descending duct portion 31b communicates with the ascending duct portion 31d having a structure extending upward so that the suction direction is directed vertically upward. The bottom part of 31b and the raising duct part 31d is formed as the storage part 31c which stores an ink mist. The storage part 31c is provided with an absorbent material 38 made of the same absorber as the bottom part of the receiving part 31a.

  The ink mist sucked through the suction hole 23a of the receiving part 31a is introduced into the descending duct part 31b and moves downward in the descending duct part 31b. And it introduce | transduces into the ascending duct part 31d from the location connected with the ascending duct part 31d in the lower end vicinity of the descending duct part 31b. At that time, in the process of passing through the descending duct portion 31b toward the ascending duct portion 31d, the ink mist tends to change from the descending state to the ascending state, but the ink mist descends in the descending duct portion 31b. As a result of the inertia in the suction direction (downward) and gravity, most of the ink mist is restrained from rising in the ascending duct portion 31d, and is a reservoir provided at the bottom of the descending duct portion 31b and the ascending duct portion 31d. It falls to 31c and is captured and stored by the absorbent 38. In particular, ink mist having relatively large particles falls into the storage portion 31c.

  The rising duct portion 31d is provided with a fan 33, and a filter 32 as a mist capturing member is detachably attached to the upstream side of the fan 33 (downward in FIG. 7). The filter 32 functions as a mist catch filter for capturing most of the remaining ink mist that has not fallen into the storage portion 31c. The fan 33 has a multi-fan structure in which a plurality of (for example, seven) fans are arranged in parallel in the width direction of the platen 23 so as to cover the entire width of the rising duct portion 31d.

  As shown in FIG. 8, the filter 32 is obtained by attaching a filter material 32b such as a nonwoven fabric or a honeycomb filter to the inside of a thin and elongated rectangular parallelepiped frame 32a. As the filter material 32b, a HAF ultra-low pressure loss filter (manufactured by Sumitomo 3M Limited) can be suitably used. In this HAF ultra-low pressure loss filter, a special charging filter has a three-dimensional honeycomb structure, and since it has a low pressure loss, it is difficult to reduce the suction force of the fan 33. Further, a knob portion 32d having a concave portion 32c is provided at one end portion of the frame body 32a so that it can be easily held when the filter 32 is taken in and out. An IC chip (CSIC) 34 capable of reading and writing data is attached to the side surface of the front end of the filter 32. The IC chip 34 stores data such as the amount of mist attached to the filter 32.

  Further, as shown in FIG. 1, a filter insertion port 2 for inserting a filter 32 is opened on the side surface of the device case 4. Inside the device case 4 continuing to the filter insertion opening 2, a filter mounting portion 31g (see FIG. 6) for mounting the filter 32 on the rising duct portion 31d is provided.

  As shown in FIG. 7, on the upstream side of the fan 33 in the rising duct portion 31d, the filter 32 is attached at a position away from the fan 33 by a predetermined distance. A fan protection filter 35 is provided as a mist capturing member. The fan protection filter 35 is preferably made of a non-woven fabric having a higher density than the filter material 32b of the filter 32. For example, a filterlet (manufactured by Sumitomo 3M Limited), which is a charged air filter material, can be suitably used. This filterlet has high submicron particle collection efficiency, low pressure loss as a nonwoven fabric structure, and little performance deterioration under high temperature and high humidity. Therefore, the fan 33 captures ink mist that has passed through the filter 32. It is possible to efficiently prevent mist from adhering to the surface.

  As described above, of the filter 32 and the fan protection filter 35 provided on the upstream side of the fan 33, the filter 32 at a location relatively far from the fan 33 on the upstream side of the fan 33 maintains the suction force of the fan 33. However, it is preferable to use a filter material having a honeycomb structure as described above so that the density is relatively low so as to capture ink mist. On the other hand, the fan protection filter 35 adjacent to the fan 33 on the upstream side of the fan 33 is required to capture the ink mist that has not been captured by the filter 32 to protect the fan 33. It is better to use a filter material to increase the density relatively. Further, since the fan protection filter 35 is close to the fan 33, it is difficult to reduce the suction force of the fan 33 even if the density is increased.

  Further, a discharge preventing filter 36 as a mist capturing member is provided at a position near the downstream side of the fan 33 in the ascending duct portion 31d. The release prevention filter 36 can be the same as the fan protection filter 35. Since the ink mist that has passed through the fan 33 is captured by the discharge prevention filter 36 provided on the downstream side of the fan 33, the ink mist can be prevented from being discharged to the outside of the printer 1.

  The rising duct portion 31d is connected to an exhaust duct portion 31e that extends to the side (backward in FIG. 6) at the rising end and then descends. An exhaust port 31f that opens to the outside of the printer 1 is provided at the lower end of the exhaust duct portion 31e. In FIG. 7, in order to explain the flow of air in an easy-to-understand manner, the exhaust duct portion 31e installed on the back side in FIG.

  According to such a printer 1, when ink droplets are ejected from the inkjet head 22 to the paper P on the platen 23 and printing processing is performed, the ink mist that has floated without adhering to the paper P is removed by the suction mechanism 30. Since the ink is sucked and attached to the mist capturing member (filter 32, fan protection filter 35, discharge prevention filter 36) inside the suction duct 31, the ink mist floating inside the printer 1 can be reduced. it can. Further, in the vicinity of the lower part of the communicating part of the descending duct part 31b and the ascending duct part 31d, the bottom part of the descending duct part 31b and the ascending duct part 31d is formed as a storage part 31c for storing ink mist. The ink mist sucked in can be dropped and stored in the storage part 31c at a large ratio, and the amount of mist attached to the fan 33 provided on the downstream side of the storage part 31c can be reduced. In addition, the configuration of the suction duct 31 improves the mist capturing capability of the mist suction mechanism 30. Therefore, the ink mist sucked into the mist suction mechanism 30 is reliably captured and the ink mist to the outside of the printer 1 is recovered. Can also be prevented. In addition, since the ink mist suction performance is stabilized, the print image quality of the printer 1 can be maintained in a good state, and the product life of the printer 1 can be improved.

  Moreover, since the storage part 31c is equipped with the absorber 38 which absorbs ink mist, the ink mist which fell to the storage part 31c is stored in the state captured by the absorber 38, without storing in liquid form. it can. In addition, an absorbent material 37 is also provided at the bottom of the receiving portion 31a, and the dropped ink droplet I and ink mist can be absorbed and captured in the same manner as the storage portion 31c.

  In addition, since the mist capturing member of the present embodiment is the filter 32 for attaching mist, the filter 35 for protecting the fan, and the filter 36 for preventing discharge, the mist can be attached and captured with a relatively simple configuration. In addition, the mist adsorption | suction member using Coulomb force can also be used as a mist capture | acquisition member.

  Further, on the downstream side of the storage portion 31 c in the suction duct 31, a filter 32 and a fan protection filter 35 are provided on the upstream side of the fan 33, and a discharge prevention filter 36 is provided on the downstream side of the fan 33. Therefore, it is possible to prevent the ink mist from adhering to the fan by capturing the ink mist before the fan 33 by the filter 32 and the fan protection filter 35. Therefore, the performance of the fan 33 can be maintained for a long time, and the life of the mist suction mechanism 30 can be extended. Furthermore, since the ink mist that has passed through the fan 33 is captured by the fan protection filter 35, it is possible to prevent the ink mist from being discharged out of the printer 1. Thus, the user can use the printer 1 with peace of mind by preventing the indoor environment where the printer 1 is installed from being contaminated by air and wall surfaces.

  Further, on the upstream side of the fan 33, a fan protection filter 35 is provided at a location close to the fan, and further, a filter 32 is provided at a location on the upstream side of the fan 33 so as to capture the ink mist and protect the fan 33. The configuration is performed by another filter. Therefore, the filter 32 and the thickness of the filter 32 can be selected so that the filter 32 can easily function as a mist catch filter for capturing most of the remaining ink mist that has not fallen into the reservoir 31c. Further, the filter material and the thickness of the fan protection filter 35 can be selected so that the function as a filter for preventing the mist from adhering to the fan 33 is easily exhibited.

For example, if the density of the filter 32 is set lower than that of the fan protection filter 35, the filter 32 can capture the ink mist while maintaining the suction force of the fan 33, and the fan protection filter 35 uses the filter 32. The fan 33 can be protected by capturing the ink mist that has not been captured. Therefore, by using the HAF ultra-low pressure loss filter as the filter material 32b of the filter material 32 and using the filterlet as the filter material of the fan protection filter 35 as described above, the performance of each filter is adjusted to each function. The mist capturing function and the mist adhesion preventing function to the fan 33 are effectively exhibited.
Further, by appropriately setting the filter material and the thickness of the discharge preventing filter 36, it is possible to effectively prevent the ink mist from being released to the outside of the printer 1.

Further, since the filter 32 inside the suction duct 31 is detachably attached, the user replaces the filter 32 with a new one before the filter material 32b is clogged, so that the suction efficiency of the ink mist can be improved. It can recover to a good state. At this time, since it is not necessary to replace the entire suction duct 31 as in the prior art, maintenance costs can be reduced, and a general user can easily perform maintenance work.
As with the filter 32, the fan protection filter 35 and the discharge prevention filter 36 may be detachable from the suction duct 31.

  In the above embodiment, two filters are provided on the upstream side of the fan 33 and one filter is provided on the downstream side. However, other configurations, for example, one or three or more filters are provided on the upstream side. A configuration may be adopted in which two or more filters are provided on the downstream side. However, it is preferable to provide at least one filter on the upstream side and the downstream side of the fan 33.

  In addition, the suction duct 31 may be configured in another form without taking the form of the above-described suction path. In the present invention, the suction duct 31 passes through the descending duct part to the rising duct part in a part of the suction path. It is required to provide a location and form a reservoir for storing mist at the bottom of the descending duct and the ascending duct.

  Although the suction mechanism 30 has been described as sucking and capturing ink mist, floating dust other than ink mist can also be sucked and captured.

  In addition, the liquid discharge apparatus according to the present invention includes a color material discharge head, an organic EL display, an FED (surface emitting display), and the like used for manufacturing a color filter such as a liquid crystal display, including the ink jet printer exemplified in the above embodiment. The present invention can also be applied to a liquid discharge device using a liquid discharge head that discharges liquid, such as an electrode material discharge head used for forming electrodes of the present invention, a bioorganic discharge head used for biochip manufacturing, and a sample discharge device as a precision pipette.

1 is an external perspective view of a printer that is an example of an embodiment of a liquid ejection apparatus according to the present invention. It is a schematic sectional side view which shows the internal structure of the printer shown in FIG. FIG. 2 is a schematic plan sectional view showing an internal configuration of the printer shown in FIG. 1. FIG. 2 is a schematic sectional side view of a printer showing a state where paper can be fed from a main cassette. FIG. 2 is a schematic plan sectional view of a printer showing a state where paper can be fed from a main cassette. It is a perspective view of the mist suction mechanism with which the printer shown in FIG. 1 is provided. It is a schematic diagram which shows the internal structure of a mist suction mechanism. It is a perspective view of the filter in a mist suction mechanism.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Printer (liquid discharge apparatus), 20 ... Print processing part, 22 ... Inkjet head (liquid discharge head), 23 ... Platen (process reference surface), 30 ... Suction mechanism (mist suction mechanism), 31 ... Suction duct, 31a ... receiving part, 31b ... descending duct part, 31c ... storage part, 31d ... rising duct part, 31e ... exhaust duct part, 31f ... exhaust port, 32 ... filter, 32b ... filter material, 33 ... fan, 35 ... for fan protection Filter, 36 ... Anti-release filter, 37 ... Absorbing material, 38 ... Absorbing material, P ... Paper (processed object).

Claims (6)

A liquid ejection head that ejects liquid droplets of a processing liquid onto an object to be processed on a processing reference surface, and a mist that has floated without adhering to the object to be processed among the liquid droplets ejected from the liquid ejection head. A mist suction mechanism that causes the mist capture member to capture the liquid discharge device,
The mist suction mechanism includes a suction hole provided in the processing reference surface, a suction duct communicating with the suction hole, and a fan provided in the suction duct,
In the suction duct, on the upstream side of the fan in the suction direction, a descending duct portion whose suction direction is downward, a rising duct portion whose suction direction is upward from a portion communicating with the vicinity of the lower end of the descending duct portion, and A liquid ejecting apparatus, comprising: a descending duct part; and a reservoir part for storing mist at a bottom part of the ascending duct part. The liquid ejection device according to claim 1,
The liquid ejecting apparatus according to claim 1, wherein the storage unit includes an absorbent that absorbs mist. The liquid ejection device according to claim 1 or 2,
The liquid ejection apparatus, wherein the mist capturing member is a filter for adhering mist. The liquid ejection device according to claim 3,
The liquid ejecting apparatus according to claim 1, wherein the filter is provided on a downstream side of the storage portion in the suction duct and on an upstream side and a downstream side of the fan. The liquid ejection device according to claim 4,
The liquid ejecting apparatus according to claim 1, wherein the filter is provided on the upstream side of the fan, at a location close to the fan and further at a location upstream of the fan. The liquid ejection device according to claim 5,
Of the two filters provided on the upstream side of the fan, the upstream filter has a lower density.

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