JP4894946B2 - Liquid ejecting apparatus and platen unit - Google Patents

Description

  The present invention relates to a liquid ejecting apparatus. More specifically, the present invention relates to a liquid ejecting apparatus that attaches liquid ejected from an opening of a nozzle plate attached to a liquid ejecting head to a recording material.

  In the liquid ejecting apparatus, when the liquid is adhered without leaving a margin at the peripheral portion of the recording material, an area that is slightly larger than the size of the recording material in anticipation of the inevitable misalignment of the recording material and the liquid ejecting head. Is ejected with respect to the liquid. For this reason, in the vicinity of both side edge portions and front and rear end portions of the recording material, the liquid is also discharged to the region where the recording material does not exist. Therefore, an absorbing member is disposed at a position facing the liquid ejecting head in the direction in which the liquid is discharged, and excess liquid that cannot adhere to the recording material is absorbed by the absorbing member, so that excess liquid is scattered. Or contaminating the surroundings.

  Note that the recording material may be stretched and wrinkled due to liquid adhesion. When the stretched recording material comes into contact with the absorbing member due to the bending of its own wrinkles, the liquid already absorbed by the absorbing member adheres to the recording material and is contaminated. In view of the elongation of the recording material, a gap of about 2 to 4 mm is provided between the recording material and the absorbing member in the liquid ejecting apparatus. Further, a gap of about 1 mm is provided between the liquid jet head and the recording material.

  On the other hand, due to a demand for improving the resolution of a recorded image, in recent liquid ejecting apparatuses, the droplets ejected from the opening of the nozzle plate are miniaturized to about several pl. Since such a fine droplet has a very small mass, once it is ejected, it rapidly loses kinetic energy due to the viscous resistance of the atmosphere. Specifically, for example, a droplet of less than 8 pl has a velocity of substantially zero when it travels about 3 mm in the atmosphere. The fine droplets that have lost their kinetic energy are almost balanced by the drop motion due to gravitational acceleration and the viscous resistance force of the atmosphere, and it takes a long time to finish dropping.

  For example, even if the ejection speed of the liquid ejecting apparatus is increased for a droplet of about 3 pl with the intention of reaching the absorbing member 3 to 5 mm away from the nozzle plate, the viscous resistance of the atmosphere acting on the droplet remains. As it rises further, the reach will be shorter. Further, when the ejection speed is increased, very fine droplets called satellite ink that are generated when the droplets are detached from the nozzle plate are likely to be generated.

  Further, in the liquid ejecting apparatus, an operation called flushing is periodically repeated. Flushing is an operation of sending a drive signal to the liquid ejecting head in the absence of a recording object, and so-called shooting of liquid. By such an operation, the thickened liquid is removed from the nozzle with a small discharge amount. However, since the liquid ejected during the flushing does not contribute to recording on the recording material, small droplets are ejected to save liquid consumption. Further, since the time required for flushing decreases the throughput of the original printing operation, the liquid is discharged from all the nozzles within a short time in the flushing. Even in such a flushing operation, a large amount of satellite ink is generated.

  Most of the satellite ink generated as a result of various phenomena as described above becomes an aerosol that floats around the liquid ejecting head moving area. Part of the aerosol floats to the outside of the liquid ejecting apparatus and adheres to the periphery of the liquid ejecting apparatus. In addition, most of the aerosol eventually adheres to each part in the liquid ejecting apparatus. In particular, when aerosol adheres to the transport path of a recording material such as a platen, the recording material transported next is contaminated. Furthermore, when the aerosol adheres to the electric circuit, the linear scale, or various optical sensors of the liquid ejecting apparatus, the apparatus itself may malfunction. Furthermore, when the user touches the aerosol, the user's hand is soiled.

The following patent document discloses a liquid ejecting apparatus having a function of actively collecting the aerosol.
JP 2004-202867 A

  In the liquid ejecting apparatus disclosed in this document, an absorbing member is disposed at a position facing the nozzle plate for the purpose of absorbing excess liquid that has not adhered to the recording material. In addition, a metal member serving as one electrode is disposed on the surface of the absorbing member, and a metal nozzle plate having an opening for discharging liquid is used as the other electrode. When different voltages are applied to these electrodes and nozzle plate, an electric field is formed between them. In addition, droplets ejected from the nozzle plate in such a liquid ejecting apparatus are charged to the same polarity as the nozzle plate when ejected from the nozzle plate. For this reason, since the liquid droplets floating as aerosols are also charged, they are directed to the electrode without being decelerated by the Coulomb force acting between itself and the electric field, and are adsorbed by the electrode having the opposite polarity to itself. . The droplet adsorbed on the electrode is sucked by capillary action and finally absorbed by the absorbing member.

  In the apparatus as described above, most of the aerosol collected using the electric field adheres to the electrode itself. However, as described above, the attached liquid is charged with the opposite polarity to the electrode. For this reason, when a large amount of liquid adheres to the electrode, the electric charge of the liquid cancels the electric field generated by the electrode and weakens the effective electric field. Thus, there has been a problem that the aerosol removing effect decreases with the accumulation of the operation time of the liquid ejecting apparatus.

  Accordingly, in order to solve the above problems, in the first embodiment of the present invention, there is provided a liquid ejecting head that has a conductive nozzle plate and ejects liquid from the opening of the nozzle plate to a recording material, and the liquid is ejected. The absorbing member is disposed opposite to the nozzle plate in the direction to be absorbed, absorbs the liquid that has not landed on the recording material and has conductivity, and is electrically connected to the back surface of the absorbing member facing the nozzle plate. And a potential difference generating means for generating a potential difference between the nozzle plate and the electrode to electrically attract the liquid to the electrode side. As a result, the liquid attracted by the potential difference generating means can be reliably absorbed by the absorbing member. Further, it is possible to prevent the electric field from being deteriorated due to the liquid being deposited on the electrode.

  The liquid ejecting apparatus further includes a platen arranged to face the nozzle plate in a direction in which the liquid is discharged, and supports a recording material, and the platen is provided with a conductive metal foil as an electrode on the bottom surface. You may have a groove part and accommodate an absorption member in a groove part. Thereby, compared with the case where an electrode is used separately from a platen, a number of parts can be decreased. In addition, this makes it possible to simplify the work of incorporating the absorbing member into the platen.

  In any of the above liquid ejecting apparatuses, the electrode may be formed in a planar shape across the back surface of the absorbing member. Thereby, it is possible to make electrical contact with the absorbing member over a wide area. Moreover, even if it is a case where an absorption member with large porosity is used by this, the fall of the electrical potential difference by the disconnection inside an absorption member can be prevented.

  In the second embodiment of the present invention, the platen unit is disposed opposite to the nozzle plate in the liquid ejecting apparatus in the direction in which the liquid is ejected, and absorbs the liquid. And a conductive absorbing member and an electrode electrically connected to the back surface of the absorbing member, and the platen has a groove portion in which a conductive metal foil as an electrode is arranged on the bottom surface, and the groove portion has an absorbing member. To accommodate. As a result, the liquid attracted by the potential difference generating means can be reliably absorbed by the absorbing member. In addition, it is possible to prevent a decrease in potential difference due to liquid deposition around the electrodes.

  The above summary of the invention does not enumerate all the necessary features of the present invention, and sub-combinations of these feature groups can also be the invention.

  Hereinafter, the present invention will be described through embodiments of the invention. However, the following embodiments do not limit the invention according to the scope of claims, and all combinations of features described in the embodiments are included. It is not necessarily essential for the solution of the invention.

  FIG. 1 is a perspective view showing an overview of an ink jet recording apparatus 11 that is an example of a liquid ejecting apparatus that can be one embodiment of the present invention, and is depicted with an upper case 22 as a cover opened. As shown in FIG. 1, the ink jet recording apparatus 11 includes a lower case 20 serving as a base of the apparatus, an upper case 22 that forms a casing together with the lower case 20, and a hopper 10 attached to a rear portion of the lower case 20. And a discharge tray 30 formed on the front surface of the lower case 20. The ink jet recording apparatus 11 includes a platen 400 disposed horizontally in the lower case 20 and a carriage 200 disposed above the platen 400 inside the casing.

  In the ink jet recording apparatus 11 as described above, the recording object 300 accommodated in the hopper 10 is sent one by one onto the platen 400 by a carry-in unit (not shown), and further discharged by a discharge unit (not shown). It is sent out to the tray 30. In the ink jet recording apparatus 11, the carriage 200 reciprocates above the platen 400 in a direction orthogonal to the conveyance direction of the recording material 300. Therefore, by alternately transporting the recording medium 300 and reciprocating the carriage 200, the entire upper surface of the recording medium 300 can be scanned by the carriage 200, and recording can be performed.

  FIG. 2 is a perspective view showing the internal mechanism 12 of the ink jet recording apparatus 11 shown in FIG. 1 with the frame 100 and the side portions 110 and 111 extracted. As shown in the figure, the internal mechanism 12 includes a frame 100 disposed substantially vertically rearward and a pair of side surface portions 110, 111 extending from the both side end portions of the frame 100 toward the front in parallel with each other. It is formed inside the area defined by.

  As shown in FIG. 2, in this internal mechanism 12, the carriage 200 is supported by a guide shaft 220 that passes through the carriage 200. An end of the guide shaft 220 is supported by the side surface portion 110 and the side surface portion 111 and is disposed in parallel to the frame 100. Accordingly, the carriage 200 can move horizontally along the guide shaft 220.

  A pair of pulleys 242 and 244 and a timing belt 230 hung on the pulleys 242 and 244 are disposed on the front surface of the frame 100 behind the carriage 200. One pulley 244 is rotationally driven by a carriage motor 246. The timing belt 230 is coupled to the rear portion of the carriage 200. Accordingly, the carriage 200 can be reciprocated according to the operation of the carriage motor 246.

  The carriage 200 is loaded with an ink cartridge 250 and includes a recording head 210 on the lower surface thereof. The recording head 210 includes a metal nozzle plate 260 including an opening for ejecting ink. Therefore, ink is ejected downward from the carriage 200.

  Furthermore, the carriage 200 is coupled to the electronic circuit 120 behind the frame 100 via a tape-shaped multicore cable 270. Since the multi-core cable 270 flexes flexibly as the carriage 200 moves, the multi-core cable 270 does not prevent the carriage 200 from reciprocating.

  A platen 400 is disposed below the area through which the carriage 200 passes. The platen 400 supports the recording material 300 that passes under the carriage 200 from below, and maintains a constant distance between the nozzle plate 260 and the recording material 300. Further, a depressed portion 410 is formed on the upper surface of the platen 400, and the absorbing member 420 is accommodated in the depressed portion 410. The absorbing member 420 receives ink ejected from the recording head 210 in an area where the recording medium 300 does not exist. Here, the upper surface of the absorbing member 420 and the nozzle plate 260 of the recording head 210 have a gap of about 3 to 5 mm.

  Ink adheres to the absorbing member 420 as the operation time of the ink jet recording apparatus 11 elapses. When the recording material 300 comes into contact with the absorbing member 420 to which the ink has adhered, the recording material 300 is contaminated by the ink. Therefore, by forming a projecting portion on the upper surface of the platen 400 to support the recording material 300 from below, contact between the two is maintained while preventing the contact.

  Further, the absorption member 420 built in the platen 400 has a limited absorption capacity because the absorption speed on the surface is emphasized. Therefore, a larger waste liquid absorbing member 600 is disposed below the platen 400 and communicates with the absorbing member 420. As for the waste liquid absorbing member 600, a material having high absorption capacity due to capillary action is selected while the absorption capacity is regarded as important. Therefore, the waste liquid absorbing member 600 can absorb a large amount of ink from the absorbing member 420.

  A conveyance roller 310 is disposed behind the platen 400. The conveyance roller 310 is driven by a conveyance motor 320 disposed behind the frame 100 and cooperates with a driven roller (not shown) to send the recording material 300 onto the platen 400. As described above, the carriage 200 can reciprocate in a direction orthogonal to the conveyance direction of the recording material 300. Accordingly, while conveying the recording medium 300 and reciprocating the carriage 200 alternately, the recording head 210 on the lower surface of the carriage 200 is intermittently operated to apply ink to an arbitrary area on the recording medium 300. Can be discharged and deposited.

  Further, in the internal mechanism 12, a cap member 500 is disposed on the side of the platen 400 on the side surface portion 110 side. The cap member 500 can move up and down, and rises to seal the surface of the nozzle plate 260 when the carriage 200 stops at the home position close to the side surface portion 110. Further, the inside of the cap member 500 is coupled to the pump unit 510. The pump unit 510 can suck ink adhering to the surface of the nozzle plate 260. The ink sucked by the pump unit 510 is absorbed by the waste liquid absorbing member 600 through a pipe (not shown).

  Further, wiping means 520 is disposed between the platen 400 and the cap member 500. When the carriage 200 released from the cap member 500 passes above, the wiping means 520 wipes and cleans the lower surface of the nozzle plate 260.

  FIG. 3 is an exploded perspective view of an aerosol collecting mechanism 13 that can be used in the ink jet recording apparatus 11 shown in FIG. FIG. 3 also shows the electrical relationship between the platen 400 side member and the nozzle plate 260.

  As shown in the figure, the platen 400 is formed by a plurality of members including a platen main body 401. A depressed portion 410 is formed on the upper surface of the platen main body 401, and several island portions 412 are formed in the depressed portion 410. Ribs 418 are respectively formed on the upper surfaces of the edge portions 402 and 404 that extend elongated in front of and behind the depressed portion 410 and the top surface of the island portion 412. The ribs 418 are formed in parallel to each other along the conveyance direction of the recording medium 300, and support the recording medium 300 from below at the leading ends thereof.

  In addition, a terminal portion insertion hole 416 for inserting a terminal portion 436 of an electrode member 430 described later is formed at the bottom end portion of the depressed portion 410. Similarly, a foot portion insertion hole 414 for inserting a foot portion 424 of the absorbing member 420 described later is formed in the vicinity of the island portion 412 on the bottom surface of the depressed portion 410. The platen main body 401 including the island portions 412, the ribs 418, the terminal portion insertion holes 416, and the foot portion insertion holes 414 can be integrally formed by injection molded resin.

  The electrode member 430 is a conductor plate having substantially the same shape as the bottom surface of the depressed portion 410 of the platen main body 401, an island portion insertion hole 432 for inserting the island portion 412 of the platen main body 401, and an absorption member 420 described later. A foot insertion notch 434 for inserting the foot 424; Further, a terminal portion 436 for coupling to a potential difference generating means 700 described later is formed at one end of the electrode member 430. The terminal portion 436 extends downward from the electrode member 430 itself. Therefore, when the electrode member 430 is accommodated in the depressed portion 410, the terminal portion 436 is exposed to the outside of the platen main body 401 through the terminal portion insertion hole 416.

  The electrode member 430 as described above is a metal having corrosion resistance to the ink of the ink jet recording apparatus, such as gold, stainless steel or nickel wire, plate or foil, or wire, plate or plate plated with these metals. It is formed in the form of a foil material, or a net-like or lattice-like combination of these materials. As another aspect, the electrode member 430 can be formed of a conductive coating layer, a plating layer, a thick film layer, a thin film layer, or the like directly formed on the depressed portion 410 of the platen main body 401.

  The platen main body 401 accommodates the absorbing member 420 so as to overlap the electrode member 430 inside the depressed portion 410. The absorbing member 420 also has substantially the same outer shape as the depressed portion 410. Further, the island part insertion hole 422 for inserting the island part 412 of the platen main body 401 is provided at a position corresponding to the arrangement of the island part 412.

  Further, the absorbing member 420 includes a foot portion 424 extending downward from the edge of each island portion insertion hole 422. The foot 424 is formed by shaping the absorbing member 420 itself and then bending it downward using a part of the portion that is unnecessary for forming the island insertion hole 422. The foot portion 424 extends through the platen body 401 through the foot portion insertion notch 434 of the electrode member 430 and the foot portion insertion hole 414 of the platen body 401, and the lower end thereof is shown in FIG. In contact with the waste liquid absorbing member 600.

  The absorbing member 420 directly receives ink droplets that have been ejected from the nozzle plate 260 and have not adhered to the recording material 300. At this time, if the absorption speed of the absorbing member 420 is low, a so-called milk crown is generated by the impact of droplets colliding with the surface of the absorbing member 420. Fine droplets form from the periphery of the milk crown, which also causes aerosol generation. Therefore, as the material of the absorbing member 420, a foam material having a high porosity is selected with an emphasis on the high absorption rate.

The absorbing member 420 can be formed of a conductive material having a surface resistance of 10 ⁸ Ω or less. Specifically, a conductive material such as polyethylene or polyurethane mixed with a conductive material such as metal or carbon and then foamed, or a conductive foam material such as polyethylene or polyurethane is adhered to a conductive material such as metal or carbon. A plated or plated one can be used. In addition, a resin foam material such as polyethylene or polyurethane impregnated with an electrolyte solution can be used as the absorbing member 420.

  In the series of members shown in FIG. 3, the electrode member 430 is coupled to the nozzle plate 260 via the potential difference generating means 700 as schematically shown in the drawing. Therefore, an electric field of, for example, 25 kV / m or more is formed between the nozzle plate 260 and the electrode member 430.

  In addition, since the absorbing member 420 is coupled to the waste liquid absorbing member 600 via many feet 424, the ink absorbed by the absorbing member 420 is promptly guided to the waste liquid absorbing member 600 via each foot 424. . Therefore, the amount of ink that adheres to the electrode member 430 disposed below the absorbing member 420 is small, and the deterioration of the electric field on the electrode member 430 side due to the adhesion of ink is small.

  Furthermore, the electrode member 430 covers the bottom of the depressed portion 410 of the platen main body 401 over substantially the entire surface, and the absorbing member 420 having substantially the same shape is accommodated thereon. Thus, since the whole lower surface of the absorption member 420 is touching the electrode member 430, the absorption member 420 and the electrode member 430 are electrically connected. Therefore, even if there is a discontinuous portion in the internal structure of the absorbing member 420, the entire absorbing member 420 has a uniform potential substantially equal to that of the electrode member 430.

  FIG. 4 is an enlarged conceptual view showing the vicinity of the nozzle plate 260 in operation in the ink jet recording apparatus 11 shown in FIGS. 1 to 3. Also in FIG. 4, the same components as those shown in FIGS. 1 to 3 are denoted by the same reference numerals, and redundant description is omitted.

  As shown in the figure, the nozzle plate 260 has a plurality of openings 262 for ejecting ink. Usually, a recording object 300 supported by the rib 418 of the platen main body 401 from below is directly below the nozzle plate 260. Accordingly, the droplet 268 ejected from the nozzle plate 260 adheres to the recording material 300.

  However, when ink is to be adhered to the edge of the recording object 300 without a margin, the recording object 300 exists directly below a part of the openings 262 at the side edge part and the front and rear ends of the recording object 300. There are things that do not. In such a case, the kinetic energy given to the droplet 266 by discharging from the opening 262 is quickly lost due to the viscous resistance of the atmosphere, and some droplets are completely lost long before reaching the absorbing member 420. Is called. Further, since the mass of the droplet 266 is very small, the drop motion due to gravitational acceleration and the viscous resistance force are almost balanced, and the drop speed of the droplet 266 is extremely slow. Thus, aerosol floating below the nozzle plate 260 is generated.

  However, in the ink jet recording apparatus 11 shown in FIG. 4, an electric field E is formed between the nozzle plate 260 and the absorbing member 420. That is, as already described with reference to FIG. 3, one end of the potential difference generating means 700 is connected to the nozzle plate 260 and the other end of the potential difference generating means 700 is connected to the electrode member 430 via the terminal portion 436. Further, the electrode member 430 is in contact with the entire lower surface of the absorbing member 420 over the entire upper surface thereof. Further, the absorbing member 420 has conductivity. Therefore, the upper surface of the absorbing member 420 has substantially the same potential as that of the electrode member 430, and the potential is uniform throughout.

  In the ink jet recording apparatus 11, the ink pushed out from the opening 262 becomes an ink column 264 that hangs down from the nozzle plate 260 at the moment immediately before the droplet 266 is formed. At this time, a so-called lightning rod effect occurs between the tip A of the ink column 264 and the lower surface of the nozzle plate 260 near the ink column 264. That is, the lightning rod effect referred to here is a region B on the surface of the nozzle plate 260 surrounded by a cone having an apex angle of 50 ° to 60 ° with the tip A (lower end in the figure) of the ink column 264 as a vertex. It contributes to the charging of H.266. Due to this lightning rod effect, the droplet 266 has a charge larger than the charge corresponding to the horizontal cross-sectional area of the ink column 264.

  The ink column 264 eventually leaves the nozzle plate 260 and becomes a droplet 266, which is charged with the charge q accumulated by the lightning rod effect as described above. Therefore, the droplet 266 having the electric charge q moves downward without being decelerated by obtaining kinetic energy from the electric field E by the Coulomb force Fe (qE), and finally can reach the absorbing member 420.

  In this case, in the ink jet recording apparatus 11 configured as described above, the electrode member 430 is disposed behind the absorbing member 420 when viewed from the nozzle plate 260 side. Therefore, the charged droplet 266 flying toward the absorbing member 420 does not directly adhere to the electrode member 430.

  Further, the foot 424 which is a part of the absorbing member 420 is in contact with the waste liquid absorbing member 600 at the lower end thereof. The ink absorbed by the absorbing member 420 is absorbed by the waste liquid absorbing member 600 having higher absorbability through the foot portion 424. Accordingly, a large amount of ink does not stay in the absorbing member 420, and the ink contained in the absorbing member 420 is less likely to adhere to the electrode member 430.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

  Further, as a specific example of the liquid ejecting apparatus that can be an embodiment of the present invention, an electrode forming apparatus or a biochip in the production of a color material ejecting apparatus, an organic EL display, an FED (surface emitting display), etc. Examples include a sample ejection head used for manufacturing, but are not limited thereto.

FIG. 2 is a perspective view of the overall appearance of the ink jet recording apparatus 11. FIG. 3 is a perspective view showing an internal mechanism 12 of the ink jet recording apparatus 11. FIG. 3 is a perspective view showing an aerosol collecting mechanism 13 of the ink jet recording apparatus 11. The side view which expands and shows a part of aerosol collection mechanism 13 shown in FIG.

10 hoppers, 11 inkjet recording devices, 12 internal mechanisms, 13 aerosol collection mechanisms, 20 lower cases, 22 upper cases, 30 discharge trays, 100 frames, 110, 111 side portions, 120 electronic circuits, 200 carriages, 210 recording heads, 220 Guide shaft, 230 Timing belt, 242 and 244 Pulley, 246 Carriage motor, 250 Ink cartridge, 260 Nozzle plate, 262 Opening, 264 Ink column, 266, 268 Droplet, 270 Multi-core cable, 300 Recorded object, 310 Conveyance Roller, 320 Conveyor motor, 400 Platen, 401 Platen body, 402, 404 Edge, 410 Recessed part, 412 Island part, 414 Foot part insertion hole, 416 Terminal part insertion hole, 418 Rib, 420 Absorbing member, 4 2 Island part insertion hole, 424 foot part, 430 electrode member, 432 Island part insertion hole, 434 Notch for foot part insertion, 436 terminal part, 500 cap member, 510 pump unit, 520 wiping means, 600 waste liquid absorbing member, 700 Potential difference generating means,

Claims (5)

A liquid ejecting head having a conductive nozzle plate and discharging liquid from an opening of the nozzle plate to a recording material;
An absorbing member that is disposed facing the nozzle plate in a direction in which the liquid is discharged, absorbs the liquid that has not landed on the recording material, and has conductivity;
An electrode disposed on the back surface of the absorbing member facing the nozzle plate;
A recording medium support member that houses the absorbing member and the electrode;
E Bei and potential difference generating means to generate a potential difference attracts the liquid into electrical electrode side between the nozzle plate and the electrode,
The recorded object support member has an island portion that supports the recorded object from below,
The electrode has an island insertion hole for inserting the island,
The absorbing member has a foot that penetrates the electrode;
The liquid ejecting apparatus according to claim 1, wherein the foot part is inserted through the island part insertion hole . The liquid ejecting apparatus according to claim 1, further comprising a notch for inserting a foot portion through which the foot portion is inserted at an edge of the island portion insertion hole. The electrodes, the liquid ejecting apparatus according to claim 1 or 2 is formed in a continuous planar across the back surface of the absorbent member. Wherein the recording material supporting member, the direction in which the liquid is discharged disposed in facing relation to the nozzle plate, and supporting the recording material,
Wherein the recording material supporting member has a groove conductive metal foil as the electrode is disposed on the bottom, according to any one of claims 1 to 3, accommodating the absorbent member in the groove Liquid ejector. The liquid ejecting apparatus according to claim 4 , wherein the metal foil is continuously formed in a planar shape over a region where the absorbing member is disposed on the bottom surface.

Images